Decomp

.gitignore

@@ -44,4 +44,11 @@ bin/**
 USECODE/REGRET/REGRET_USECODE_extracted/chunks/**
 exports/**
 out/**
-binary/**
+binary/**
+psx-map-exporter/.output-render/**
+
+# JavaScript / Node
+**/node_modules/**
+**/dist/**
+**/.vite/**
+*.log

check_type.cjs

@@ -0,0 +1,4 @@
+const fs = require('fs');
+const data = JSON.parse(fs.readFileSync('psx-map-exporter/.output-render/L0/auto/L0.json', 'utf8'));
+console.log('Type of data:', Array.isArray(data) ? 'Array' : typeof data);
+if (!Array.isArray(data)) console.log('Keys:', Object.keys(data));

inspect_l0.cjs

@@ -0,0 +1,15 @@
+const fs = require('fs');
+const path = require('path');
+const jsonPath = 'psx-map-exporter/.output-render/L0/auto/L0.json';
+const cacheDir = 'psx-map-exporter/.cache/L0/sprites';
+const data = JSON.parse(fs.readFileSync(jsonPath, 'utf8'));
+const items = (data.items || []).filter(item => item.bundleAbsoluteOffset !== undefined && item.frameIndex !== undefined && item.width > 0).slice(0, 5);
+items.forEach(item => {
+    const bundleHex = item.bundleAbsoluteOffset.toString(16).padStart(8, '0');
+    const frameIdx = item.frameIndex.toString().padStart(3, '0');
+    const fileName = `bundle_${bundleHex}/frame_${frameIdx}.png`;
+    const fullPath = path.join(cacheDir, fileName);
+    const exists = fs.existsSync(fullPath);
+    console.log(`recordIndex: ${item.recordIndex}, bundleAbsoluteOffset: ${item.bundleAbsoluteOffset}, frameIndex: ${item.frameIndex}, width: ${item.width}, height: ${item.height}`);
+    console.log(`File: ${fileName}, Exists: ${exists}`);
+});

psx-map-exporter/.gitignore

@@ -1,3 +1,7 @@
 .cache/**
 .output/**
-node_modules/**
+.output-render/**
+.tmp/**
+node_modules/**
+viewer/dist/**
+viewer/.vite/**

psx-map-exporter/docs/spec.md

@@ -201,27 +201,81 @@ For each record:
   - `screenX - originX`
   - `screenY - originY`
 
-Current draw order is conservative:
+### Projection sign convention
 
-- main-visible before special-visible
+`psx_project_object_main_visible @ 0x80040d44` writes `proj_x = Y - X` and
-- then ascending `screenY`
+`proj_y = 2*Z - (X + Y) / 2` to `obj+0x78/0x7c`. The engine's draw step at
-- then ascending `screenX`
+`0x80040e3c/0x80040e5c` then computes `screen = (cam - proj) - origin`, which
+flips the sign of the projection relative to canvas Y-down space. For a
+camera-less full-map export the exporter bakes that flip into
+`projectCtorPlacement`, so higher world-Z and smaller (X+Y) sit visibly higher
+on the output PNG. The same projection is applied to both constructor
+placements and dispatch-root records; dispatch-root X/Y fields are in world
+coordinates, not pre-projected screen coordinates, despite the runtime
+`camera +/- 0x140` cull comparing against them directly.
 
-This is a probe approximation. The later graph-based stage-1 ordering still belongs to a future pass.
+### Authored layer semantics
 
-The rendered PNG uses a neutral opaque background by default so probe silhouettes are legible without relying on transparency.
+The two authored lanes carry different responsibilities:
+
+- `constructors`: static level geometry — walls, floors, architecture placed
+  by `psx_dispatch_section0_constructor_placements`.
+- `roots`: interactive / dynamic objects — crates, terminals, doors, pickups
+  placed by `psx_dispatch_section0_dispatch_roots`.
+
+Despite the dispatcher name, the `roots` lane is not the map background; it is
+the live-object seed list. For the exporter, "constructors" is the geometry
+layer and "roots" is the object layer.
+
+### Painter's order
+
+The exporter sorts items before blitting using the following keys, in order:
+
+1. `stage` ascending. `stage = 1` when `typeWord === 4` or `laneWord & 0x0400`
+   is set; those overlays draw last.
+2. Authored-layer priority: `constructors` (0) before `roots` (1). Static
+   geometry draws first so interactive props in the same room do not get
+   hidden behind the floor or wall pieces that occupy the same cell.
+3. Isometric depth ascending: back-to-front by world `X + Y` (isometric
+   ground-depth axis). Falls back to projected `screenY` when world
+   coordinates are unavailable.
+4. World `Z` ascending within the same ground cell so lower elevations draw
+   before taller objects sharing the same footprint.
+5. `screenX` ascending as a stable tie-breaker.
+
+This is still an approximation of the engine's stage-1 graph order but is
+closer to what an isometric painter's algorithm would produce than the earlier
+screenY-only sort.
+
+The rendered PNG uses a neutral opaque background by default so probe
+silhouettes are legible without relying on transparency.
 
 ## Color Rule
 
-`v0` emits grayscale art from raw pixel indices.
+The exporter resolves palettes entirely from the WDL contents. It does not
+require any RAM or VRAM dump; those paths are now optional research overrides.
 
-Reason:
+The map-local palette blob lives at `headerWords[2] .. headerWords[2] + 0x1000`
+(4096 bytes = 2048 colors = 128 × 16-entry CLUTs). The blob is what the engine
+uploads to VRAM rows `0xf0 .. 0xf7` on map load; each VRAM row is 16 CLUTs
+wide so the 128 CLUTs tile exactly 8 rows of 16 CLUTs.
 
-- bundle frame decode is already well constrained
+Resolution rules by bundle mode:
-- full CLUT parity is not
-- grayscale preserves shape/variant evidence without pretending the palette problem is solved
 
-Transparent index `0` stays transparent.
+- **Mode 2 (4bpp)**: the bundle header's `paletteIndex` at `+0x14` is the
+  16-entry CLUT index into the WDL `palettes16` bank. When that index points
+  at a sparse/empty CLUT the exporter falls back to a per-bundle palette sweep
+  that picks a CLUT covering the pixel-index set used by the bundle frames.
+- **Mode 1 (8bpp)**: the 256-color CLUT is the concatenation of 16 consecutive
+  16-entry CLUTs from the WDL bank. The bundle's `paletteIndex` is treated as
+  the starting CLUT index. For the current L0 dataset every mode-1 bundle
+  stores `paletteIndex = 0`, which is the top-left 256-color bank. Mode-1
+  color fidelity is therefore approximate until the level-specific 256-CLUT
+  source (suspected to live in the `stateBank` block) is decoded — tracked as
+  a follow-up.
+
+Transparent pixel index `0` stays transparent during blit regardless of the
+color value stored at CLUT index 0.
 
 ## CLI
 
@@ -254,8 +308,13 @@ Supported options:
 
 ## Planned Follow-Ups
 
-- extend `sceneInterpretation` so it reflects the landed loader-faithful binding instead of the older repeated-wrong-art warning
+- decode the `stateBank` and `stateBank2` blocks to recover the level-specific
-- identify and parse the separate static-world or subordinate level substrate that complements the constructor-fed live-object lane, instead of treating section-0 constructor placements as the whole map
+  256-color CLUT used by mode-1 sprites. Current mode-1 palettes default to
-- add palette/CLUT reconstruction
+  CLUT-bank start 0, which produces plausible colors for some sprites but
-- add stage-1 graph ordering recovery
+  renders many indoor floor tiles as solid green plates.
-- compare the probe scene against fixed live samples such as `map 104` without reintroducing viewer-side donor assumptions
+- extend `sceneInterpretation` so it reflects the landed loader-faithful
+  binding instead of the older repeated-wrong-art warning.
+- recover the engine's stage-1 graph ordering instead of approximating with
+  isometric `(X + Y, Z, screenX)` sort keys.
+- compare the probe scene against fixed live samples such as `map 104` without
+  reintroducing viewer-side donor assumptions.

psx-map-exporter/scripts/export-all.mjs

@@ -0,0 +1,170 @@
+#!/usr/bin/env node
+// Batch-export every LSET*/L*.WDL found under the PSX disc root into a
+// permanent .output-render/<mapStem>/<variant>/ directory tree. Each export
+// runs as a separate child process so an OOM or crash on one map cannot kill
+// the batch.
+
+import { spawn } from 'node:child_process';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import process from 'node:process';
+import { fileURLToPath } from 'node:url';
+
+const SCRIPT_DIR = path.dirname(fileURLToPath(import.meta.url));
+const PROJECT_ROOT = path.resolve(SCRIPT_DIR, '..');
+const CLI_PATH = path.join(PROJECT_ROOT, 'src', 'cli.js');
+
+const VARIANTS = [
+  { label: 'auto', mapSource: 'auto' },
+  { label: 'region01', mapSource: 'region01' },
+];
+
+function parseArgs(argv) {
+  const options = {
+    discRoot: 'E:/emu/psx/Crusader - No Remorse',
+    outputRoot: path.join(PROJECT_ROOT, '.output-render'),
+    debugLabels: true,
+    only: null,
+    timeoutMs: 300000,
+  };
+  for (let index = 2; index < argv.length; index += 1) {
+    const arg = argv[index];
+    const next = argv[index + 1];
+    if (arg === '--disc-root') { options.discRoot = path.resolve(next); index += 1; }
+    else if (arg === '--output-root') { options.outputRoot = path.resolve(next); index += 1; }
+    else if (arg === '--no-debug-labels') { options.debugLabels = false; }
+    else if (arg === '--only') {
+      options.only = String(next).split(',').map((v) => v.trim()).filter(Boolean);
+      index += 1;
+    } else if (arg === '--timeout-ms') {
+      options.timeoutMs = Number(next); index += 1;
+    }
+  }
+  return options;
+}
+
+async function discoverMaps(discRoot) {
+  const entries = await fs.readdir(discRoot, { withFileTypes: true });
+  const maps = [];
+  for (const entry of entries) {
+    if (!entry.isDirectory()) continue;
+    if (!/^LSET\d+$/i.test(entry.name)) continue;
+    const dir = path.join(discRoot, entry.name);
+    const files = await fs.readdir(dir);
+    for (const file of files) {
+      if (!/^L\d+\.WDL$/i.test(file)) continue;
+      maps.push({
+        set: entry.name,
+        name: path.parse(file).name,
+        wdlPath: path.join(dir, file),
+        sourceRel: `${entry.name}/${file}`,
+      });
+    }
+  }
+  maps.sort((a, b) => {
+    const an = Number.parseInt(a.name.replace(/^L/i, ''), 10);
+    const bn = Number.parseInt(b.name.replace(/^L/i, ''), 10);
+    return an - bn;
+  });
+  return maps;
+}
+
+function runExport(mapEntry, variant, options) {
+  return new Promise((resolve) => {
+    const outDir = path.join(options.outputRoot, mapEntry.name, variant.label);
+    const args = [
+      '--max-old-space-size=4096',
+      CLI_PATH,
+      '--disc-root', options.discRoot,
+      '--source', mapEntry.sourceRel,
+      '--map-source', variant.mapSource,
+      '--output-root', outDir,
+    ];
+    if (options.debugLabels) args.push('--debug-labels');
+
+    const started = Date.now();
+    const child = spawn(process.execPath, args, { stdio: ['ignore', 'pipe', 'pipe'] });
+    let stdout = '';
+    let stderr = '';
+    let killed = false;
+    const timer = setTimeout(() => {
+      killed = true;
+      child.kill('SIGKILL');
+    }, options.timeoutMs);
+
+    child.stdout.on('data', (chunk) => { stdout += chunk; });
+    child.stderr.on('data', (chunk) => { stderr += chunk; });
+    child.on('close', (code, signal) => {
+      clearTimeout(timer);
+      const ms = Date.now() - started;
+      resolve({ outDir, code, signal, killed, ms, stdout, stderr });
+    });
+  });
+}
+
+async function main() {
+  const options = parseArgs(process.argv);
+  const maps = await discoverMaps(options.discRoot);
+  const filtered = options.only ? maps.filter((m) => options.only.includes(m.name)) : maps;
+
+  console.log(`Found ${filtered.length} maps under ${options.discRoot}`);
+  await fs.mkdir(options.outputRoot, { recursive: true });
+
+  const summary = [];
+  let okCount = 0;
+  let failCount = 0;
+  for (const mapEntry of filtered) {
+    for (const variant of VARIANTS) {
+      const tag = `[${mapEntry.set}/${mapEntry.name}] variant=${variant.label}`;
+      process.stdout.write(`${tag} ... `);
+      const result = await runExport(mapEntry, variant, options);
+      if (result.code === 0) {
+        okCount += 1;
+        process.stdout.write(`OK (${result.ms}ms)\n`);
+        summary.push({
+          set: mapEntry.set,
+          map: mapEntry.name,
+          variant: variant.label,
+          ms: result.ms,
+          ok: true,
+          outDir: path.relative(options.outputRoot, result.outDir),
+        });
+      } else {
+        failCount += 1;
+        const reason = result.killed
+          ? `TIMEOUT after ${result.ms}ms`
+          : `exit ${result.code}${result.signal ? ' signal ' + result.signal : ''}`;
+        process.stdout.write(`FAIL (${reason})\n`);
+        if (result.stderr) {
+          process.stdout.write(`  stderr: ${result.stderr.trim().split(/\r?\n/).slice(-5).join('\n  stderr: ')}\n`);
+        }
+        summary.push({
+          set: mapEntry.set,
+          map: mapEntry.name,
+          variant: variant.label,
+          ms: result.ms,
+          ok: false,
+          reason,
+          stderrTail: result.stderr.trim().split(/\r?\n/).slice(-10).join('\n'),
+          outDir: path.relative(options.outputRoot, result.outDir),
+        });
+      }
+    }
+  }
+
+  const indexPath = path.join(options.outputRoot, 'index.json');
+  await fs.writeFile(indexPath, JSON.stringify({
+    discRoot: options.discRoot,
+    generatedAt: new Date().toISOString(),
+    variants: VARIANTS.map((v) => v.label),
+    okCount,
+    failCount,
+    maps: summary,
+  }, null, 2));
+  console.log(`\nWrote index ${indexPath} (ok=${okCount} fail=${failCount})`);
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});

psx-map-exporter/src/bundles.js

@@ -8,6 +8,10 @@ function readU16LE(buffer, offset) {
   return buffer.readUInt16LE(offset);
 }
 
+function readS16LE(buffer, offset) {
+  return buffer.readInt16LE(offset);
+}
+
 function rowByteWidth(width, mode) {
   return mode === 2 ? Math.ceil(width / 2) : width;
 }
@@ -26,17 +30,45 @@ function psx555ToRgba(color) {
 }
 
 export function extractPaletteSets(buffer, headerWords) {
-  if (!Array.isArray(headerWords) || headerWords.length < 4) {
+  if (!Array.isArray(headerWords) || headerWords.length < 9) {
     return { palettes16: [], palettes256: [] };
   }
 
-  const paletteOffset = headerWords[2];
+  // The runtime CLUT table is the LAST chunk of the level "section pack" that
-  const paletteSize = headerWords[3];
+  // wdl_resource_bundle_load_by_index @ 0x80039918 reads from the per-map .WDL
-  if (paletteSize !== 0x1000 || paletteOffset < 0 || paletteOffset + paletteSize > buffer.length) {
+  // file. The 0x38-byte header is an array of 14 u32 sizes:
+  //   [c8, c4, c0, bc, b8, b4, b0, ac, a8, a4, a0, 9c, 98, 94]
+  // The section pack covers the first sum(headerWords[0..9]) bytes after the
+  // header. Within it, the engine derives section pointers as:
+  //   dispatch_roots          @ +headerWords[0]
+  //   ctor_placement_records  @ +headerWords[1]
+  //   ctor_placement_section  @ +headerWords[2]
+  //   (local_bc scratch gap)  @ headerWords[3]   <-- SKIPPED in pointer math
+  //   section_pack_base       @ +headerWords[4]
+  //   type_policy_table       @ +headerWords[5]
+  //   8006754c table          @ +headerWords[6]
+  //   control_opcode_stream   @ +headerWords[7]
+  //   psx_level_clut_table    @ +headerWords[8]   <-- CLUT starts here
+  // Note that the engine's chain skips headerWords[3] (`local_bc`); that field
+  // is a separate scratch reservation released by psx_level_heap_rewind after
+  // level_palette_header_apply returns. The CLUT absolute file offset is
+  // therefore 0x38 plus the sum of headerWords[0..2, 4..8].
+  // The CLUT spans 0x1000 bytes (128 x 32-byte 16-color CLUTs) which matches
+  // the engine's psx_clut_table_by_resource_bank layout (8 rows x 16 cols).
+  // The exporter previously used headerWords[2] / headerWords[3] which are
+  // actually section sizes, not a palette offset; that mismatch produced the
+  // wrong colors (e.g. neon-green floors instead of grey concrete).
+  let clutOffset = 0x38;
+  for (let i = 0; i < 9 && i < headerWords.length; i += 1) {
+    if (i === 3) continue; // skip local_bc scratch reservation
+    clutOffset += headerWords[i] >>> 0;
+  }
+  const paletteSize = 0x1000;
+  if (clutOffset < 0 || clutOffset + paletteSize > buffer.length) {
     return { palettes16: [], palettes256: [] };
   }
 
-  const blob = buffer.subarray(paletteOffset, paletteOffset + paletteSize);
+  const blob = buffer.subarray(clutOffset, clutOffset + paletteSize);
   const palettes16 = [];
   const palettes256 = [];
 
@@ -56,7 +88,7 @@ export function extractPaletteSets(buffer, headerWords) {
     palettes256.push(palette);
   }
 
-  return { palettes16, palettes256 };
+  return { palettes16, palettes256, clutOffset };
 }
 
 export function buildMode1RuntimePaletteForIndex(palettes16, startIndex = 0) {
@@ -286,8 +318,8 @@ export function extractBundleFromHeader(payloadBuffer, absoluteHeaderOffset) {
     const relativeDataOffset = readU32LE(payloadBuffer, entryOffset + 0x08);
     const frameWidth = readU16LE(payloadBuffer, entryOffset + 0x0c);
     const frameHeight = readU16LE(payloadBuffer, entryOffset + 0x0e);
-    const originX = readU16LE(payloadBuffer, entryOffset + 0x10);
+    const originX = readS16LE(payloadBuffer, entryOffset + 0x10);
-    const originY = readU16LE(payloadBuffer, entryOffset + 0x12);
+    const originY = readS16LE(payloadBuffer, entryOffset + 0x12);
 
     const dataStart = dataOffset + (((flags & 1) === 1) ? relativeDataOffset * 4 : relativeDataOffset);
     const rawSize = rowByteWidth(frameWidth, mode) * frameHeight;

psx-map-exporter/src/cli.js

@@ -1,28 +1,38 @@
+import fs from 'node:fs';
 import path from 'node:path';
 import process from 'node:process';
 import { fileURLToPath } from 'node:url';
 
 import { exportMap } from './export-map.js';
 
+// Resolve the on-disc PSX asset root. We prefer the ORIGINAL extracted disc
+// files so the exporter never depends on a pre-processed cache; the cached
+// STATIC_PSX copy in the sibling viewer workspace is kept only as a fallback
+// for environments without the disc mounted.
+function resolveDefaultDiscRoot(moduleDir) {
+  const candidates = [
+    'E:/emu/psx/Crusader - No Remorse',
+    'E:/emu/psx/Crusader 2 Pre-Pre Alpha',
+    path.resolve(moduleDir, '..', '..', '..', 'crusader_map_viewer', 'map_renderer', 'STATIC_PSX'),
+  ];
+  for (const candidate of candidates) {
+    try {
+      const stat = fs.statSync(candidate);
+      if (stat.isDirectory()) {
+        return candidate;
+      }
+    } catch {
+      // try next
+    }
+  }
+  return candidates[candidates.length - 1];
+}
+
 function parseArgs(argv) {
   const moduleDir = path.dirname(fileURLToPath(import.meta.url));
   const options = {
-    discRoot: path.resolve(
+    discRoot: resolveDefaultDiscRoot(moduleDir),
-      moduleDir,
+    gpuRamDump: null,
-      '..',
-      '..',
-      '..',
-      'Crusader-Map-Viewer',
-      'map_renderer',
-      'STATIC_PSX'
-    ),
-    gpuRamDump: path.resolve(
-      moduleDir,
-      '..',
-      '..',
-      'binary',
-      'Crusader - No Remorse (USA) GPU RAM 2.bin'
-    ),
     mapSource: 'auto',
     bindingMode: 'raw',
     sceneScope: 'probe',
@@ -81,6 +91,15 @@ function parseArgs(argv) {
       index += 1;
       continue;
     }
+    if (arg === '--output-root') {
+      options.outputRoot = path.resolve(next);
+      index += 1;
+      continue;
+    }
+    if (arg === '--no-reset-output') {
+      options.resetOutputRoot = false;
+      continue;
+    }
     if (arg === '--debug-labels') {
       options.debugLabels = true;
       continue;
@@ -146,6 +165,8 @@ async function main() {
     gpuRamDumpPath: options.gpuRamDump,
     validationBundles: options.validationBundles,
     outName: options.outName,
+    outputRoot: options.outputRoot,
+    resetOutputRoot: options.resetOutputRoot,
     debugLabels: Boolean(options.debugLabels),
   });
 

psx-map-exporter/src/export-map.js

@@ -431,6 +431,21 @@ function chooseBundleBinding(record, bundles, options = {}) {
     return null;
   }
 
+  // Mark high-typeWord dispatch_root entries (>= 0xAC) as non-renderable
+  // placeholders rather than guessing art for them. The PSX engine switches
+  // its palette-token sourcing at typeWord 0xAC: types below use the 16-byte
+  // ctor record (renderable world objects) and types at or above use the
+  // 24-byte dispatch-root record (spawners, triggers, NPCs, UI panels) and
+  // typically have no sprite art at all. Without this guard the
+  // `bundles[typeWord]` fallback below picks an arbitrary bundle by raw scan
+  // order and produces wildly wrong sprites (e.g. invisible spawners
+  // rendered as brick walls / turrets / teleporters). The viewer still gets
+  // a placeholder so these entities remain inspectable.
+  // Cross-ref `/memories/repo/psx-typeword-renderable-boundary-2026-04-19.md`.
+  if (record.sourceFamily === 'section0_dispatch_roots' && record.typeWord >= 0xAC) {
+    return { bundle: null, mappingSource: 'placeholder-dispatch-root-high-typeword', runtimeBinding: null, placeholder: true };
+  }
+
   const rawTypeBundle = chooseBundleForType(bundles, record.typeWord);
   if (!rawTypeBundle) {
     return null;
@@ -525,7 +540,15 @@ function summarizeRenderedLayers(items) {
 }
 
 function derivePaletteDiagnostics(record, bundle) {
-  const rawWords = Array.isArray(record.rawWords) ? record.rawWords : [];
+  // For dispatch-root records the meaningful per-record palette token lives
+  // in the full 24-byte raw row (12 u16 words), not the projected 6-word
+  // record we keep for shared scene math. Constructor placements only have
+  // the 12-byte form, so falling back to record.rawWords is correct there.
+  const rawWords = Array.isArray(record.dispatchRootRawWords)
+    ? record.dispatchRootRawWords
+    : Array.isArray(record.rawWords)
+      ? record.rawWords
+      : [];
   const token06HighByte = rawWords.length >= 4 ? ((rawWords[3] >>> 8) & 0xff) : null;
   const token0cHighByte = rawWords.length >= 7 ? ((rawWords[6] >>> 8) & 0xff) : null;
 
@@ -1008,29 +1031,57 @@ function resolveBundlePalettes(bundles, paletteSets, options = {}) {
     let paletteFormula = null;
 
     if (bundle.mode === 2) {
-      if (!Number.isInteger(resolvedPaletteIndex) || resolvedPaletteIndex < 0 || resolvedPaletteIndex >= paletteSets.palettes16.length) {
+      // Mode 2 (4bpp) descriptor binder at psx_resource_bind_single_image_vram_slot
-        resolvedPaletteIndex = choosePalette(paletteSets.palettes16, bundle.frames, bundle.mode);
+      // (0x800444e4) takes the bundle's `paletteIndex` from descriptor+0x14
+      // and ADDS 0x10 (= 16) before storing it as the resource's CLUT bank
+      // index at resource+0x08. The submitters then read
+      // psx_clut_table_by_resource_bank[resource+8] which is identical to
+      // palettes16[paletteIndex + 16]. The exporter therefore offsets the
+      // bundle index by +16 for mode-2 art.
+      const baseIndex = Number.isInteger(bundle.paletteIndex) ? bundle.paletteIndex : null;
+      const adjustedIndex = baseIndex !== null ? baseIndex + 16 : null;
+      if (adjustedIndex !== null && adjustedIndex >= 0 && adjustedIndex < paletteSets.palettes16.length) {
+        resolvedPaletteIndex = adjustedIndex;
+        palette = paletteSets.palettes16[adjustedIndex];
+        paletteFormula = 'mode2-bundle-index-plus-16';
       }
-      if (Number.isInteger(resolvedPaletteIndex) && resolvedPaletteIndex >= 0 && resolvedPaletteIndex < paletteSets.palettes16.length) {
+      if (!palette) {
-        palette = paletteSets.palettes16[resolvedPaletteIndex];
+        if (!Number.isInteger(resolvedPaletteIndex) || resolvedPaletteIndex < 0 || resolvedPaletteIndex >= paletteSets.palettes16.length) {
-        paletteFormula = 'mode2-bundle-or-usage-index';
+          resolvedPaletteIndex = choosePalette(paletteSets.palettes16, bundle.frames, bundle.mode);
+        }
+        if (Number.isInteger(resolvedPaletteIndex) && resolvedPaletteIndex >= 0 && resolvedPaletteIndex < paletteSets.palettes16.length) {
+          palette = paletteSets.palettes16[resolvedPaletteIndex];
+          paletteFormula = 'mode2-bundle-or-usage-index-fallback';
+        }
       }
     } else if (bundle.mode === 1) {
-      if (options.mode1RuntimePalette?.length === 256) {
+      // Mode 1 is an 8bpp image with a 256-entry CLUT. In this engine the
+      // 256-color CLUT is NOT a dedicated palette-256 block — it is the
+      // concatenation of 16 consecutive 16-entry CLUTs taken from the
+      // `palettes16` bank. The bundle header's `paletteIndex` is the starting
+      // CLUT index into `palettes16`. Falling back to `0` matches the legacy
+      // behavior but is almost always wrong for mode-1 art; the per-bundle
+      // index is the real engine-equivalent rule.
+      const bankStart = Number.isInteger(bundle.paletteIndex) && bundle.paletteIndex >= 0
+        ? bundle.paletteIndex
+        : 0;
+      const fromBundleIndex = mode1PaletteBank[bankStart];
+      if (fromBundleIndex?.length === 256) {
+        resolvedPaletteIndex = bankStart;
+        palette = fromBundleIndex;
+        paletteFormula = 'mode1-palette16-bank-start-index-bundle';
+      } else if (options.mode1RuntimePalette?.length === 256) {
         resolvedPaletteIndex = 0;
         palette = options.mode1RuntimePalette;
+        paletteFormula = 'mode1-live-gpu-ram-row-f0-x0';
       } else if (mode1PaletteBank[0]?.length) {
         resolvedPaletteIndex = 0;
         palette = mode1PaletteBank[0];
+        paletteFormula = 'mode1-palette16-bank-start-index-0-fallback';
       } else {
         resolvedPaletteIndex = null;
         palette = mode1RuntimePalette;
-      }
+        paletteFormula = palette ? 'mode1-runtime-clut-band-start-index-0' : null;
-
-      if (palette) {
-        paletteFormula = options.mode1RuntimePalette?.length === 256
-          ? 'mode1-live-gpu-ram-row-f0-x0'
-          : 'mode1-runtime-clut-band-start-index-0';
       }
     }
 
@@ -1050,7 +1101,18 @@ async function buildSceneItems(region04, records, bundles, options = {}) {
   const skippedRecords = [];
 
   const nonMapFacingRootTypes = new Set([0x42, 0x49]);
-  const nonMapFacingBundleOffsets = new Set([0x000d84f4]);
+  // Bundles that bind via dispatch_roots but are HUD/UI artwork, not authored
+  // map placements. They surface in the scene because they share the dispatch
+  // table format with world objects, but rendering them produces a stray UI
+  // panel floating in the middle of an empty area.
+  //   0x000d84f4 - portrait/talk panel (already known)
+  //   0x00074f44 - type 0xAC (172) full-screen UI panel, 216x126, kind-4
+  //                mode-2; user-confirmed as the lone "TAC:b4f44" leak.
+  //   0x00086810 - "ceiling" tile (T0x43, kind-5 mode-2, 128x65). Engine uses
+  //                it at runtime to temporarily obscure rooms the player has
+  //                not entered yet; for static map rendering it just hides
+  //                the geometry the user wants to see, so it is suppressed.
+  const nonMapFacingBundleOffsets = new Set([0x000d84f4, 0x00074f44, 0x00086810]);
   for (const record of records) {
     if (record.sourceFamily === 'section0_dispatch_roots' && nonMapFacingRootTypes.has(record.typeWord)) {
       skippedRecords.push({
@@ -1064,7 +1126,62 @@ async function buildSceneItems(region04, records, bundles, options = {}) {
 
     const binding = chooseBundleBinding(record, bundles, options);
     const bundle = binding?.bundle ?? null;
-    if (!bundle || !binding) {
+    if (!binding) {
+      continue;
+    }
+    if (binding.placeholder) {
+      // Non-renderable entity (spawner, trigger, NPC, UI marker). Emit a small
+      // square footprint so the viewer can still display and inspect it.
+      const PLACEHOLDER_SIZE = 12;
+      items.push({
+        id: record.index,
+        instanceId: record.index,
+        recordIndex: record.index,
+        recordSource: record.source,
+        sourceFamily: record.sourceFamily,
+        authoredLayer: record.authoredLayer ?? record.sourceRole ?? null,
+        recordSide: record.recordSide,
+        rowIndex: record.rowIndex,
+        typeWord: record.typeWord,
+        laneWord: record.laneWord,
+        worldX: record.xWord ?? null,
+        worldY: record.yWord ?? null,
+        worldZ: record.zWord ?? null,
+        screenX: record.screenX,
+        screenY: record.screenY,
+        bundleSlot: null,
+        bundleAbsoluteOffset: null,
+        bundleSource: null,
+        requestedFrameIndex: record.selectorWord,
+        frameIndex: null,
+        defaultPaletteIndex: null,
+        resolvedPaletteIndex: null,
+        paletteFormula: null,
+        mappingSource: binding.mappingSource,
+        templateTypeId: null,
+        donorTypeId: null,
+        runtimeBindingMaskedAbsoluteOffset: null,
+        runtimeBindingOffsetDelta: null,
+        runtimeBindingVisibleCount: null,
+        runtimeBindingRawRecordCount: null,
+        rawWords: record.rawWords ?? record.words,
+        flipped: false,
+        width: PLACEHOLDER_SIZE,
+        height: PLACEHOLDER_SIZE,
+        originX: PLACEHOLDER_SIZE / 2,
+        originY: PLACEHOLDER_SIZE / 2,
+        drawX: record.screenX - PLACEHOLDER_SIZE / 2,
+        drawY: record.screenY - PLACEHOLDER_SIZE / 2,
+        stage: 1, // overlays so placeholders sit on top of geometry
+        isFlat: false,
+        resourceKey: 'placeholder',
+        paletteDiagnostics: null,
+        sprite: null,
+        placeholder: true,
+      });
+      continue;
+    }
+    if (!bundle) {
       continue;
     }
     if (nonMapFacingBundleOffsets.has(bundle.absoluteOffset)) {
@@ -1102,6 +1219,9 @@ async function buildSceneItems(region04, records, bundles, options = {}) {
       rowIndex: record.rowIndex,
       typeWord: record.typeWord,
       laneWord: record.laneWord,
+      worldX: record.xWord ?? null,
+      worldY: record.yWord ?? null,
+      worldZ: record.zWord ?? null,
       screenX: record.screenX,
       screenY: record.screenY,
       bundleSlot: bundle.slot,
@@ -1125,21 +1245,89 @@ async function buildSceneItems(region04, records, bundles, options = {}) {
       height: sprite.height,
       originX: sprite.originX,
       originY: sprite.originY,
-      drawX: record.screenX - sprite.originX,
+      // Engine-accurate anchor selection per psx_project_object_main_visible
+      // (0x80040d44 / 0x80040ddc): when laneWord bit 0x0002 is set the engine
+      // mirrors the horizontal anchor from origin_x to (frame_w - origin_x).
+      // The blit step then flips the sprite. Applying both keeps the visible
+      // anchor on the same world point, fixing flipped walls that previously
+      // landed (frame_w - 2*origin_x) px too far left.
+      drawX: ((record.laneWord & 0x0002) !== 0)
+        ? record.screenX - (sprite.width - sprite.originX)
+        : record.screenX - sprite.originX,
       drawY: record.screenY - sprite.originY,
       stage: record.typeWord === 4 || (record.laneWord & 0x0400) !== 0 ? 1 : 0,
+      // Heuristic: flat floor/ceiling decals are tile-sized sprites whose
+      // anchor sits at the bottom edge AND whose silhouette is wider than
+      // tall (i.e. matches the engine's 2:1 isometric ground footprint).
+      // Upright sprites (walls, crates, terminals, props) extend well above
+      // the anchor and have height >= width.
+      isFlat:
+        sprite.width >= 48 &&
+        sprite.height > 0 &&
+        sprite.height / sprite.width <= 0.6 &&
+        sprite.originY >= sprite.height - 4,
       resourceKey,
       paletteDiagnostics: derivePaletteDiagnostics(record, bundle),
       sprite,
     });
   }
 
+  // Painter's order for an isometric top-down full-map render.
+  // 1. `stage`: runtime sub-stage flag (0 = default, 1 = overlays flagged via
+  //    typeWord===4 or laneWord bit 0x0400). Overlays always on top.
+  // 2. Isometric depth: back-to-front by world `X + Y` (ground depth along the
+  //    engine's isometric axis). Constructors (static geometry: walls, floors,
+  //    architecture) and roots (dynamic props: crates, terminals, doors) are
+  //    interleaved by depth so a crate placed in front of a wall does not get
+  //    painted over by a wall placed further back. Falls back to screenY when
+  //    world coords are unavailable.
+  // 3. `isFlat`: at the SAME depth, flat ground decals (floor/ceiling tiles)
+  //    must draw BEFORE upright sprites (walls, crates, props) so the props
+  //    standing on the tile sit visually on top of it. Without this bias,
+  //    floors painted on the same world tile as a prop will overpaint the
+  //    prop whenever screenX happens to sort the floor last.
+  // 4. `worldZ` ascending: lower objects at the same ground cell draw before
+  //    taller ones at that cell.
+  // 5. `authoredLayer`: when world coords + flatness tie, draw constructors
+  //    (geometry) before roots (props) so props sit on top of their floor.
+  // 6. `screenX` ascending: stable tie-breaker left-to-right.
+  const layerTieBreak = (item) => {
+    if (item.authoredLayer === 'constructors') return 0;
+    if (item.authoredLayer === 'roots') return 1;
+    return 2;
+  };
+  const depthKey = (item) => {
+    if (Number.isFinite(item.worldX) && Number.isFinite(item.worldY)) {
+      return item.worldX + item.worldY;
+    }
+    return item.screenY;
+  };
   items.sort((left, right) => {
     if (left.stage !== right.stage) {
       return left.stage - right.stage;
     }
-    if (left.screenY !== right.screenY) {
+    // Two-pass painter: ALL flat ground decals first (back-to-front by depth),
-      return left.screenY - right.screenY;
+    // then ALL upright sprites (back-to-front by depth). This avoids the
+    // floor-anchor problem where a flat tile's authored anchor sits at its
+    // FRONT tip (largest world X+Y in the footprint), which a single-pass
+    // depth sort would draw AFTER walls/props that visually stand on it.
+    if (left.isFlat !== right.isFlat) {
+      return left.isFlat ? -1 : 1;
+    }
+    const leftDepth = depthKey(left);
+    const rightDepth = depthKey(right);
+    if (leftDepth !== rightDepth) {
+      return leftDepth - rightDepth;
+    }
+    const leftZ = Number.isFinite(left.worldZ) ? left.worldZ : 0;
+    const rightZ = Number.isFinite(right.worldZ) ? right.worldZ : 0;
+    if (leftZ !== rightZ) {
+      return leftZ - rightZ;
+    }
+    const leftLayer = layerTieBreak(left);
+    const rightLayer = layerTieBreak(right);
+    if (leftLayer !== rightLayer) {
+      return leftLayer - rightLayer;
     }
     return left.screenX - right.screenX;
   });
@@ -1200,13 +1388,19 @@ export async function exportMap(options) {
   const cacheBaseRoot = path.join(options.projectRoot, '.cache');
   const cacheRoot = path.join(options.projectRoot, '.cache', mapStem);
   const spriteRoot = path.join(cacheRoot, 'sprites');
-  const outputRoot = path.join(options.projectRoot, '.output');
+  const outputRoot = options.outputRoot
+    ? path.resolve(options.outputRoot)
+    : path.join(options.projectRoot, '.output');
 
   await ensureDirectory(cacheBaseRoot);
   await resetDirectory(cacheRoot);
   await ensureDirectory(cacheRoot);
   await ensureDirectory(spriteRoot);
-  await resetDirectory(outputRoot);
+  if (options.resetOutputRoot === false) {
+    await ensureDirectory(outputRoot);
+  } else {
+    await resetDirectory(outputRoot);
+  }
 
   const recordSet = chooseRecordSet(wdl, options.mapSource);
   const region04 = wdl.regions.find((region) => region.name === 'post_audio_region_04');
@@ -1363,6 +1557,9 @@ export async function exportMap(options) {
       rawWords: item.rawWords,
       typeWord: item.typeWord,
       laneWord: item.laneWord,
+      worldX: item.worldX ?? null,
+      worldY: item.worldY ?? null,
+      worldZ: item.worldZ ?? null,
       screenX: item.screenX,
       screenY: item.screenY,
       bundleSlot: item.bundleSlot,
@@ -1395,6 +1592,7 @@ export async function exportMap(options) {
       originX: item.originX,
       originY: item.originY,
       stage: item.stage,
+      placeholder: item.placeholder === true,
     })),
   };
 

psx-map-exporter/src/render.js

@@ -13,6 +13,18 @@ const GLYPHS = {
   '7': ['111', '001', '001', '001', '001'],
   '8': ['111', '101', '111', '101', '111'],
   '9': ['111', '101', '111', '001', '111'],
+  'a': ['010', '101', '111', '101', '101'],
+  'b': ['110', '101', '110', '101', '110'],
+  'c': ['111', '100', '100', '100', '111'],
+  'd': ['110', '101', '101', '101', '110'],
+  'e': ['111', '100', '110', '100', '111'],
+  'f': ['111', '100', '110', '100', '100'],
+  'p': ['110', '101', '110', '100', '100'],
+  't': ['111', '010', '010', '010', '010'],
+  '#': ['101', '111', '101', '111', '101'],
+  ':': ['000', '010', '000', '010', '000'],
+  '/': ['001', '001', '010', '100', '100'],
+  '-': ['000', '000', '111', '000', '000'],
 };
 
 function clearCanvas(width, height, background = null) {
@@ -87,6 +99,18 @@ function drawLabel(canvas, canvasWidth, canvasHeight, text, x, y) {
   }
 }
 
+function drawBoundingBox(canvas, canvasWidth, canvasHeight, x, y, width, height, alpha = 220) {
+  if (width <= 0 || height <= 0) {
+    return;
+  }
+  // Top + bottom edges
+  fillRect(canvas, canvasWidth, canvasHeight, x, y, width, 1, 255, 255, 255, alpha);
+  fillRect(canvas, canvasWidth, canvasHeight, x, y + height - 1, width, 1, 255, 255, 255, alpha);
+  // Left + right edges
+  fillRect(canvas, canvasWidth, canvasHeight, x, y, 1, height, 255, 255, 255, alpha);
+  fillRect(canvas, canvasWidth, canvasHeight, x + width - 1, y, 1, height, 255, 255, 255, alpha);
+}
+
 function blitRgba(canvas, canvasWidth, canvasHeight, sprite, dstX, dstY, flipped = false) {
   for (let y = 0; y < sprite.height; y += 1) {
     const canvasY = dstY + y;
@@ -115,12 +139,68 @@ function blitRgba(canvas, canvasWidth, canvasHeight, sprite, dstX, dstY, flipped
   }
 }
 
+// Magenta diamond marker for placeholder (non-renderable) entities such as
+// spawners, triggers, NPCs, and UI panels. Drawn in place of a sprite blit so
+// the viewer still surfaces the entity for inspection without guessing wrong
+// art. The diamond is 12x12 by default (caller passes the placeholder width).
+function drawPlaceholderMarker(canvas, canvasWidth, canvasHeight, dstX, dstY, w, h) {
+  const half = Math.max(2, Math.floor(Math.min(w, h) / 2));
+  const cx = Math.round(dstX + w / 2);
+  const cy = Math.round(dstY + h / 2);
+  // Filled diamond by scanline.
+  for (let dy = -half; dy <= half; dy += 1) {
+    const span = half - Math.abs(dy);
+    const y = cy + dy;
+    if (y < 0 || y >= canvasHeight) continue;
+    for (let dx = -span; dx <= span; dx += 1) {
+      const x = cx + dx;
+      if (x < 0 || x >= canvasWidth) continue;
+      // Magenta interior with darker outline on the diamond edge.
+      const onEdge = Math.abs(dx) + Math.abs(dy) === half;
+      const target = ((y * canvasWidth) + x) * 4;
+      canvas[target + 0] = onEdge ? 90 : 220;
+      canvas[target + 1] = onEdge ? 0 : 60;
+      canvas[target + 2] = onEdge ? 110 : 200;
+      canvas[target + 3] = 255;
+    }
+  }
+}
+
 export function renderMap(items, options = {}) {
   if (items.length === 0) {
     throw new Error('No renderable scene items were produced.');
   }
 
-  const bounds = items.reduce(
+  // Guard against a single bad item (e.g. corrupt sprite origin) inflating the
+  // canvas to multiple gigabytes. We compute the median centroid of all items
+  // and drop anything farther than MAX_EXTENT px from it before computing
+  // bounds. This keeps render output sane even if the parser produces a few
+  // outliers, while preserving every real authored item (the playfield is
+  // never larger than a few thousand pixels in either axis).
+  const MAX_EXTENT = 4096;
+  const centroids = items.map((it) => ({ x: it.drawX + (it.width ?? 0) / 2, y: it.drawY + (it.height ?? 0) / 2 }));
+  const sortedX = centroids.map((c) => c.x).sort((a, b) => a - b);
+  const sortedY = centroids.map((c) => c.y).sort((a, b) => a - b);
+  const medianX = sortedX[sortedX.length >> 1];
+  const medianY = sortedY[sortedY.length >> 1];
+  const droppedOutliers = [];
+  const visibleItems = items.filter((it, idx) => {
+    const dx = Math.abs(centroids[idx].x - medianX);
+    const dy = Math.abs(centroids[idx].y - medianY);
+    if (dx > MAX_EXTENT || dy > MAX_EXTENT) {
+      droppedOutliers.push({ recordIndex: it.recordIndex, typeWord: it.typeWord, drawX: it.drawX, drawY: it.drawY, dx, dy });
+      return false;
+    }
+    return true;
+  });
+  if (droppedOutliers.length > 0 && process.env.PSX_TRACE) {
+    console.error('[renderMap] dropped ' + droppedOutliers.length + ' outlier item(s) beyond ' + MAX_EXTENT + 'px from median; first: ' + JSON.stringify(droppedOutliers[0]));
+  }
+  if (visibleItems.length === 0) {
+    throw new Error('All scene items were classified as outliers; nothing to render.');
+  }
+
+  const bounds = visibleItems.reduce(
     (state, item) => ({
       minX: Math.min(state.minX, item.drawX),
       minY: Math.min(state.minY, item.drawY),
@@ -133,9 +213,27 @@ export function renderMap(items, options = {}) {
   const padding = 16;
   const width = Math.max(1, (bounds.maxX - bounds.minX) + (padding * 2));
   const height = Math.max(1, (bounds.maxY - bounds.minY) + (padding * 2));
+  if (process.env.PSX_TRACE) {
+    console.error('[renderMap] items=' + visibleItems.length + ' bounds=' + JSON.stringify(bounds) + ' size=' + width + 'x' + height);
+  }
   const canvas = clearCanvas(width, height, options.background ?? DEFAULT_BACKGROUND);
 
-  for (const item of items) {
+  for (const item of visibleItems) {
+    if (item.placeholder || !item.sprite) {
+      // Draw a small magenta diamond marker for non-renderable entities
+      // (spawners, triggers, NPCs). Keeps them visible and inspectable in
+      // the viewer overlay without guessing wrong art.
+      drawPlaceholderMarker(
+        canvas,
+        width,
+        height,
+        item.drawX - bounds.minX + padding,
+        item.drawY - bounds.minY + padding,
+        item.width,
+        item.height
+      );
+      continue;
+    }
     blitRgba(
       canvas,
       width,
@@ -148,15 +246,37 @@ export function renderMap(items, options = {}) {
   }
 
   if (options.drawLabels) {
-    for (const item of items) {
+    // Cap labels at 10 instances per (typeWord, bundleAbsoluteOffset) pair so
-      drawLabel(
+    // dense root layers (e.g. floor tiles) do not bury the labels we actually
-        canvas,
+    // need to read. The bounding box is also suppressed once the label budget
-        width,
+    // is exhausted so duplicate-instance clusters do not redraw white outlines
-        height,
+    // on every tile and obscure surrounding art.
-        item.labelId ?? item.id,
+    const labelBudgetPerBundle = 10;
-        item.drawX - bounds.minX + padding,
+    const labelTally = new Map();
-        item.drawY - bounds.minY + padding
+    for (const item of visibleItems) {
-      );
+      const tallyKey = `${item.typeWord ?? '?'}|${item.bundleAbsoluteOffset ?? '?'}`;
+      const used = labelTally.get(tallyKey) ?? 0;
+      if (used >= labelBudgetPerBundle) {
+        continue;
+      }
+      labelTally.set(tallyKey, used + 1);
+      const boxX = item.drawX - bounds.minX + padding;
+      const boxY = item.drawY - bounds.minY + padding;
+      const boxW = item.width ?? item.sprite?.width ?? 0;
+      const boxH = item.height ?? item.sprite?.height ?? 0;
+      drawBoundingBox(canvas, width, height, boxX, boxY, boxW, boxH);
+      // Compose a useful label: typeWord (hex) + bundle absolute offset (last 4 hex)
+      const labelParts = [];
+      if (Number.isInteger(item.typeWord)) {
+        labelParts.push('t' + item.typeWord.toString(16));
+      }
+      if (Number.isInteger(item.bundleAbsoluteOffset)) {
+        labelParts.push('b' + (item.bundleAbsoluteOffset & 0xffff).toString(16).padStart(4, '0'));
+      }
+      if (labelParts.length === 0 && (item.labelId ?? item.id) !== undefined) {
+        labelParts.push('#' + (item.labelId ?? item.id));
+      }
+      drawLabel(canvas, width, height, labelParts.join(':'), boxX, boxY);
     }
   }
 
@@ -164,6 +284,7 @@ export function renderMap(items, options = {}) {
     width,
     height,
     bounds,
+    droppedOutlierCount: droppedOutliers.length,
     png: encodePng(canvas, width, height),
   };
 }

psx-map-exporter/src/wdl.js

@@ -286,14 +286,34 @@ function isStructuredCandidate(words) {
   return true;
 }
 
+function projectCtorPlacement(xWord, yWord, zWord) {
+  // Engine-accurate projection, matching `psx_project_object_main_visible`
+  // (0x80040d44) followed by the camera subtraction at 0x80040e3c/0x80040e5c.
+  //
+  // The projection step writes to obj+0x78/0x7c:
+  //   proj_x = Y - X
+  //   proj_y = 2*Z - (X+Y)/2
+  // The draw step then writes to obj+0x20/0x22:
+  //   screen_x = (cam_X - proj_x) - origin_X
+  //   screen_y = (cam_Y - proj_y) - origin_Y
+  // i.e. the engine renders the world with the sign flipped relative to the
+  // raw projection. For a camera-less full-map export we fold that flip into
+  // the projection so higher world Z appears higher on the canvas (Y-down).
+  const projX = yWord - xWord;
+  const projY = (2 * zWord) - Math.floor((xWord + yWord) / 2);
+  return {
+    screenX: -projX * PSX_SCREEN_SCALE,
+    screenY: -projY * PSX_SCREEN_SCALE,
+  };
+}
+
 function buildRecord(words, source, offset, rawWords = words) {
   if (!isPlausibleRecord(words)) {
     return null;
   }
 
   const [typeWord, xWord, yWord, zWord, selectorWord, laneWord] = words;
-  const screenX = (yWord - xWord) * PSX_SCREEN_SCALE;
+  const { screenX, screenY } = projectCtorPlacement(xWord, yWord, zWord);
-  const screenY = ((2 * zWord) - Math.floor((xWord + yWord) / 2)) * PSX_SCREEN_SCALE;
 
   return {
     index: -1,
@@ -595,11 +615,17 @@ export function parseRegion01Records(region) {
 
 // Loader-faithful 12-byte constructor-placement records straight out of the
 // `ctorPlacements` subrange of the section pack. Layout per
-// `psx_dispatch_section0_constructor_placements @ 0x800258cc`:
+// `psx_object_create_compound_record @ 0x80025040`:
-//   [u32 count][count * { u16 typeWord; u16 X; u16 Y; u16 Z; u16 selector;
+//   +0x00 u16 typeWord          -> descriptor_table index
-//                         u16 flags }]
+//   +0x02 u16 X                 -> obj world X (<<16 seed)
-// Each record is called as `descriptor_table[typeWord].slot0(record, 0)` and
+//   +0x04 u16 Y                 -> obj world Y (<<16 seed)
-// `psx_object_create_compound_record` then reads exactly those 6 u16 fields.
+//   +0x06 u8  Z (low byte only!)-> obj world Z (<<16 seed). The high byte at
+//                                  +0x07 is not read as part of Z.
+//   +0x08 u8  selector          -> state-script seed
+//   +0x09 u8  (padding/unknown)
+//   +0x0a u16 laneWord          -> OR'd into obj+0x1c (flags/lane)
+// The previous implementation decoded Z as a u16 from +0x06, which mixed the
+// selector byte into Z and produced large bogus elevations.
 export function parseCtorPlacementsBlock(block, variant = 'lset') {
   if (!block || !block.buffer || block.size < 4) {
     return { source: 'ctorPlacements', records: [], count: 0 };
@@ -614,11 +640,17 @@ export function parseCtorPlacementsBlock(block, variant = 'lset') {
     if (recordOffset + 12 > block.buffer.length) {
       break;
     }
-    const words = [];
+    const typeWord = readU16LE(block.buffer, recordOffset + 0x00);
-    for (let cursor = 0; cursor < 12; cursor += 2) {
+    const xWord = readU16LE(block.buffer, recordOffset + 0x02);
-      words.push(readU16LE(block.buffer, recordOffset + cursor));
+    const yWord = readU16LE(block.buffer, recordOffset + 0x04);
-    }
+    const zWord = block.buffer[recordOffset + 0x06];
-    const record = buildRecord(words, 'ctorPlacements', recordOffset, words);
+    const z2Byte = block.buffer[recordOffset + 0x07];
+    const selectorWord = block.buffer[recordOffset + 0x08];
+    const selectorHighByte = block.buffer[recordOffset + 0x09];
+    const laneWord = readU16LE(block.buffer, recordOffset + 0x0a);
+    const rawWords = [typeWord, xWord, yWord, (z2Byte << 8) | zWord, (selectorHighByte << 8) | selectorWord, laneWord];
+    const words = [typeWord, xWord, yWord, zWord, selectorWord, laneWord];
+    const record = buildRecord(words, 'ctorPlacements', recordOffset, rawWords);
     if (!record) {
       continue;
     }
@@ -646,17 +678,17 @@ export function parseCtorPlacementsBlock(block, variant = 'lset') {
 // `psx_dispatch_section0_dispatch_roots @ 0x800256b0`:
 //   [u32 count][count * 24 bytes]
 // Within each record the dispatcher reads:
-//   +4 u16  typeId  (argument to descriptor_table[typeId])
+//   +0x04 u16 typeId    (descriptor_table index)
-//   +8 u16  screenX (for +/-0x140 cull)
+//   +0x08 u16 worldX    (compared to cam+0x3e +/- 0x140 — cam+0x3e is the
-//   +10 u16 screenY (for +/-0x140 cull)
+//                        camera's world-X short, not the projected integer
-//   +16 u16 flags   (bit 3 = skip this record)
+//                        part; proof: root worldX values overlap constructor
-// Z, selector and lane are not universally used by the dispatcher. The empirical
+//                        placement worldX values in the same map)
-// best mapping that matches constructor-placement convention is:
+//   +0x0a u16 worldY    (compared to cam+0x42 +/- 0x140)
-//   +6  u16 zeta     (often 0)
+//   +0x10 u16 flags     (bit 3 = skip this record)
-//   +12 u16 selector/rotation
+// We therefore project root worldX/worldY through the same projection as
-//   +14 u16 lane/flags-lo
+// constructor placements (with Z=0 since dispatch roots do not carry a Z byte
-// We keep them in rawWords so downstream consumers can probe further, but
+// at a known offset) and render them on the same canvas. The trailing raw
-// buildRecord uses the cull-verified X/Y/typeId for positioning.
+// fields are preserved as `dispatchRootRawWords` for future probes.
 export function parseDispatchRootsBlock(block, variant = 'lset') {
   if (!block || !block.buffer || block.size < 4) {
     return { source: 'dispatchRoots', records: [], count: 0 };
@@ -675,17 +707,6 @@ export function parseDispatchRootsBlock(block, variant = 'lset') {
     for (let cursor = 0; cursor < 24; cursor += 2) {
       rawWords.push(readU16LE(block.buffer, recordOffset + cursor));
     }
-    // Project into buildRecord's 6-word ctor-placement shape using the fields
-    // the live dispatcher reads. rawWords indices:
-    //   [0..1] (+0..+3)   prefix
-    //   [2]    (+4)       typeId (dispatch)
-    //   [3]    (+6)       zeta / z-ish
-    //   [4]    (+8)       X  (cull)
-    //   [5]    (+10)      Y  (cull)
-    //   [6]    (+12)      selector-ish
-    //   [7]    (+14)      lane-ish
-    //   [8]    (+16)      flags (bit 3 skip)
-    //   [9..11]           trailing
     const flags = rawWords[8];
     if ((flags & 0x8) !== 0) {
       continue;
@@ -693,14 +714,16 @@ export function parseDispatchRootsBlock(block, variant = 'lset') {
     const typeWord = rawWords[2];
     const xWord = rawWords[4];
     const yWord = rawWords[5];
+    // Engine reads Z from the LOW byte of the u16 at +0x06 of the shared
+    // authored prefix (constructor view), even when the record is iterated
+    // through the dispatcher view. Confirmed via psx_object_create_compound_record
+    // @ 0x80024eec (memory note psx-coordinate-decode-2026-04-18.md). The HIGH
+    // byte of the same u16 is a palette-override token, NOT a Z extension.
+    // The constructor-view u16 at +0x06 lives at rawWords[3] in this 12-u16
+    // expansion of the 24-byte dispatch-root record.
     const zWord = rawWords[3] & 0xff;
     const selectorWord = rawWords[6];
     const laneWord = rawWords[7];
-    // Relaxed plausibility: dispatch-root records can have lane==0 or large
-    // selectors (e.g. behavior opcodes) because the dispatcher only reads
-    // typeId, X, Y, and the +0x10 skip flag. We only require typeId in the
-    // scene-relevant range and X/Y not both zero. This is looser than
-    // `isPlausibleRecord` on purpose.
     if (typeWord < 0x20 || typeWord > 0x1ff) {
       continue;
     }
@@ -708,8 +731,7 @@ export function parseDispatchRootsBlock(block, variant = 'lset') {
       continue;
     }
     const words = [typeWord, xWord, yWord, zWord, selectorWord, laneWord];
-    const screenX = (yWord - xWord) * PSX_SCREEN_SCALE;
+    const { screenX, screenY } = projectCtorPlacement(xWord, yWord, zWord);
-    const screenY = ((2 * zWord) - Math.floor((xWord + yWord) / 2)) * PSX_SCREEN_SCALE;
     const record = {
       index: -1,
       source: 'dispatchRoots',

psx-map-exporter/viewer/index.html

@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>PSX Map Debug Viewer</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.js"></script>
+  </body>
+</html>

psx-map-exporter/viewer/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "psx-map-debug-viewer",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "vue": "^3.4.0"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "^5.0.0",
+    "vite": "^5.4.0"
+  }
+}

psx-map-exporter/viewer/src/App.vue

@@ -0,0 +1,536 @@
+<script setup>
+import { computed, nextTick, onMounted, ref, shallowRef, watch } from 'vue';
+import ItemPanel from './ItemPanel.vue';
+
+const PADDING = 16;
+// Match psx-map-exporter/src/render.js DEFAULT_BACKGROUND. The exporter still
+// produces a baked .png for offline reference, but the viewer composites each
+// sprite live so hide/filter operations no longer carve holes out of the map.
+const BACKGROUND = 'rgb(18, 18, 18)';
+
+const indexData = ref(null);
+const indexError = ref(null);
+const selectedMap = ref(null);
+const selectedVariant = ref(null);
+const scene = shallowRef(null);
+const sceneError = ref(null);
+const loading = ref(false);
+
+const canvasRef = ref(null);
+const containerRef = ref(null);
+// Sprite image cache shared across redraws. Keyed by mapStem|bundleAbsHex|frameIdx
+// so swapping maps does not invalidate sprites still bound by other items.
+const spriteCache = new Map();
+
+const zoom = ref(1);
+const pan = ref({ x: 0, y: 0 });
+const dragging = ref(null);
+
+const showHitboxes = ref(true);
+const showOnlyLayer = ref('all');
+const filterTypeHex = ref('');
+const filterBundleHex = ref('');
+
+const hovered = shallowRef(null);
+const selected = shallowRef(null);
+// Set of recordIndex values the user has manually hidden via shift+click.
+const hiddenIds = ref(new Set());
+const hiddenList = computed(() => {
+  if (!scene.value || hiddenIds.value.size === 0) return [];
+  return scene.value.json.items.filter((it) => hiddenIds.value.has(it.recordIndex));
+});
+
+function hideItem(item) {
+  if (!item || !Number.isInteger(item.recordIndex)) return;
+  const next = new Set(hiddenIds.value);
+  next.add(item.recordIndex);
+  hiddenIds.value = next;
+  if (selected.value?.recordIndex === item.recordIndex) selected.value = null;
+}
+function unhideItem(item) {
+  if (!item || !Number.isInteger(item.recordIndex)) return;
+  const next = new Set(hiddenIds.value);
+  next.delete(item.recordIndex);
+  hiddenIds.value = next;
+}
+function clearHidden() { hiddenIds.value = new Set(); }
+
+async function loadIndex() {
+  try {
+    const res = await fetch('/api/index');
+    if (!res.ok) throw new Error('Index HTTP ' + res.status);
+    indexData.value = await res.json();
+  } catch (error) {
+    indexError.value = error.message;
+  }
+}
+
+const mapList = computed(() => {
+  if (!indexData.value) return [];
+  const seen = new Set();
+  const list = [];
+  for (const entry of indexData.value.maps) {
+    if (entry.error) continue;
+    if (seen.has(entry.map)) continue;
+    seen.add(entry.map);
+    list.push(entry.map);
+  }
+  return list;
+});
+
+const variantList = computed(() => indexData.value?.variants ?? []);
+
+watch(mapList, (list) => {
+  if (!selectedMap.value && list.length) selectedMap.value = list[0];
+});
+watch(variantList, (list) => {
+  if (!selectedVariant.value && list.length) selectedVariant.value = list[0];
+});
+
+async function loadScene() {
+  if (!selectedMap.value || !selectedVariant.value) return;
+  loading.value = true;
+  sceneError.value = null;
+  scene.value = null;
+  selected.value = null;
+  hovered.value = null;
+  hiddenIds.value = new Set();
+  try {
+    const base = `/render/${selectedMap.value}/${selectedVariant.value}/${selectedMap.value}`;
+    const json = await fetch(`${base}.json`).then((r) => {
+      if (!r.ok) throw new Error('Scene JSON HTTP ' + r.status);
+      return r.json();
+    });
+    scene.value = { json, mapStem: selectedMap.value };
+    // Eagerly preload all unique sprite frames referenced by this scene so
+    // the first canvas paint shows the full map instead of a half-loaded
+    // jumble. drawScene() is then called once all are settled.
+    await preloadSprites(json, selectedMap.value);
+  } catch (error) {
+    sceneError.value = error.message;
+  } finally {
+    loading.value = false;
+  }
+}
+
+watch([selectedMap, selectedVariant], loadScene);
+
+function spriteKey(mapStem, bundleAbsoluteOffset, frameIndex) {
+  return `${mapStem}|${bundleAbsoluteOffset.toString(16)}|${frameIndex}`;
+}
+function spriteUrl(mapStem, bundleAbsoluteOffset, frameIndex) {
+  const bundleHex = bundleAbsoluteOffset.toString(16).padStart(8, '0');
+  const frameStr = String(frameIndex).padStart(3, '0');
+  return `/sprites/${mapStem}/bundle_${bundleHex}/frame_${frameStr}.png`;
+}
+function loadSprite(mapStem, bundleAbsoluteOffset, frameIndex) {
+  const key = spriteKey(mapStem, bundleAbsoluteOffset, frameIndex);
+  let entry = spriteCache.get(key);
+  if (entry) return entry;
+  entry = new Promise((resolve) => {
+    const img = new Image();
+    img.onload = () => {
+      // Replace the Promise with the resolved Image so drawScene's fast path
+      // (synchronous cache hit) sees a real HTMLImageElement instead of a
+      // Promise. The Promise is still returned from this call for any awaiter.
+      spriteCache.set(key, img);
+      resolve(img);
+    };
+    img.onerror = () => {
+      spriteCache.set(key, null); // Cache the miss so we do not retry forever
+      resolve(null);
+    };
+    img.src = spriteUrl(mapStem, bundleAbsoluteOffset, frameIndex);
+  });
+  spriteCache.set(key, entry);
+  return entry;
+}
+async function preloadSprites(json, mapStem) {
+  const seen = new Set();
+  const tasks = [];
+  for (const it of json.items) {
+    if (it.placeholder) continue;
+    if (!Number.isInteger(it.bundleAbsoluteOffset) || !Number.isInteger(it.frameIndex)) continue;
+    const key = spriteKey(mapStem, it.bundleAbsoluteOffset, it.frameIndex);
+    if (seen.has(key)) continue;
+    seen.add(key);
+    tasks.push(loadSprite(mapStem, it.bundleAbsoluteOffset, it.frameIndex));
+  }
+  await Promise.all(tasks);
+}
+
+const canvasWidth = computed(() => {
+  if (!scene.value) return 0;
+  return scene.value.json.renderWidth ?? 0;
+});
+const canvasHeight = computed(() => {
+  if (!scene.value) return 0;
+  return scene.value.json.renderHeight ?? 0;
+});
+
+function drawPlaceholder(ctx, dstX, dstY, w, h) {
+  const half = Math.max(2, Math.floor(Math.min(w, h) / 2));
+  const cx = Math.round(dstX + w / 2);
+  const cy = Math.round(dstY + h / 2);
+  ctx.beginPath();
+  ctx.moveTo(cx, cy - half);
+  ctx.lineTo(cx + half, cy);
+  ctx.lineTo(cx, cy + half);
+  ctx.lineTo(cx - half, cy);
+  ctx.closePath();
+  ctx.fillStyle = 'rgb(220, 60, 200)';
+  ctx.fill();
+  ctx.lineWidth = 1;
+  ctx.strokeStyle = 'rgb(90, 0, 110)';
+  ctx.stroke();
+}
+
+function drawScene() {
+  if (!scene.value || !canvasRef.value) return;
+  const cv = canvasRef.value;
+  const w = canvasWidth.value;
+  const h = canvasHeight.value;
+  if (cv.width !== w) cv.width = w;
+  if (cv.height !== h) cv.height = h;
+  const ctx = cv.getContext('2d');
+  ctx.imageSmoothingEnabled = false;
+  ctx.fillStyle = BACKGROUND;
+  ctx.fillRect(0, 0, w, h);
+  const bounds = scene.value.json.bounds;
+  const mapStem = scene.value.mapStem;
+  for (const item of visibleItems()) {
+    const dx = (item.drawX - bounds.minX) + PADDING;
+    const dy = (item.drawY - bounds.minY) + PADDING;
+    if (item.placeholder || !Number.isInteger(item.bundleAbsoluteOffset)) {
+      drawPlaceholder(ctx, dx, dy, item.width, item.height);
+      continue;
+    }
+    const key = spriteKey(mapStem, item.bundleAbsoluteOffset, item.frameIndex);
+    let cached = spriteCache.get(key);
+    if (cached === undefined) {
+      // Not yet requested: kick a load and skip this paint. The load
+      // resolution will trigger a redraw via the .then handler below.
+      cached = loadSprite(mapStem, item.bundleAbsoluteOffset, item.frameIndex);
+    }
+    // Only synchronous cache hits are drawn this pass. Misses kick off a load
+    // and trigger a redraw when complete; this keeps the paint loop simple
+    // and avoids partial draws when scrolling.
+    if (cached && typeof cached.then === 'function') {
+      cached.then((img) => {
+        if (img && scene.value?.mapStem === mapStem) drawScene();
+      });
+      continue;
+    }
+    const img = cached;
+    if (!img) continue;
+    if (item.flipped) {
+      ctx.save();
+      ctx.translate(dx + item.width, dy);
+      ctx.scale(-1, 1);
+      ctx.drawImage(img, 0, 0);
+      ctx.restore();
+    } else {
+      ctx.drawImage(img, dx, dy);
+    }
+  }
+}
+
+function fitToContainer() {
+  if (!containerRef.value || !canvasWidth.value) return;
+  const c = containerRef.value.getBoundingClientRect();
+  const sx = c.width / canvasWidth.value;
+  const sy = c.height / canvasHeight.value;
+  const z = Math.min(sx, sy) * 0.95;
+  pan.value = {
+    x: (c.width - canvasWidth.value * z) / 2,
+    y: (c.height - canvasHeight.value * z) / 2,
+  };
+  zoom.value = z;
+}
+
+function onWheel(event) {
+  if (!containerRef.value) return;
+  event.preventDefault();
+  const rect = containerRef.value.getBoundingClientRect();
+  const mx = event.clientX - rect.left;
+  const my = event.clientY - rect.top;
+  const factor = event.deltaY < 0 ? 1.15 : 1 / 1.15;
+  const newZoom = Math.max(0.05, Math.min(16, zoom.value * factor));
+  pan.value = {
+    x: mx - (mx - pan.value.x) * (newZoom / zoom.value),
+    y: my - (my - pan.value.y) * (newZoom / zoom.value),
+  };
+  zoom.value = newZoom;
+}
+
+function onMouseDown(event) {
+  if (event.button !== 0 && event.button !== 1) return;
+  dragging.value = { x: event.clientX, y: event.clientY, startPan: { ...pan.value }, moved: false };
+}
+function onMouseMove(event) {
+  if (dragging.value) {
+    const dx = event.clientX - dragging.value.x;
+    const dy = event.clientY - dragging.value.y;
+    if (Math.abs(dx) + Math.abs(dy) > 3) dragging.value.moved = true;
+    pan.value = {
+      x: dragging.value.startPan.x + dx,
+      y: dragging.value.startPan.y + dy,
+    };
+    return;
+  }
+  if (!scene.value || !containerRef.value) return;
+  const rect = containerRef.value.getBoundingClientRect();
+  const px = (event.clientX - rect.left - pan.value.x) / zoom.value;
+  const py = (event.clientY - rect.top - pan.value.y) / zoom.value;
+  hovered.value = pickItem(px, py);
+}
+function onMouseUp() { dragging.value = null; }
+function onMouseLeave() { dragging.value = null; hovered.value = null; }
+
+function onClick(event) {
+  if (dragging.value?.moved) return;
+  if (!scene.value || !containerRef.value) return;
+  const rect = containerRef.value.getBoundingClientRect();
+  const px = (event.clientX - rect.left - pan.value.x) / zoom.value;
+  const py = (event.clientY - rect.top - pan.value.y) / zoom.value;
+  const item = pickItem(px, py);
+  // Shift+click hides the picked item from the live canvas redraw, so the
+  // sprite vanishes instead of being masked over and you can see anything
+  // underneath. Clear via the "Show hidden" / "restore all" buttons.
+  if (event.shiftKey && item) {
+    hideItem(item);
+    return;
+  }
+  selected.value = item;
+}
+
+function itemPixelRect(item) {
+  const b = scene.value.json.bounds;
+  return {
+    x: (item.drawX - b.minX) + PADDING,
+    y: (item.drawY - b.minY) + PADDING,
+    w: item.width,
+    h: item.height,
+  };
+}
+
+function visibleItems() {
+  if (!scene.value) return [];
+  let items = scene.value.json.items;
+  if (hiddenIds.value.size) {
+    items = items.filter((it) => !hiddenIds.value.has(it.recordIndex));
+  }
+  if (showOnlyLayer.value !== 'all') {
+    items = items.filter((it) => (it.authoredLayer ?? 'unknown') === showOnlyLayer.value);
+  }
+  if (filterTypeHex.value.trim()) {
+    const t = parseInt(filterTypeHex.value, 16);
+    if (Number.isFinite(t)) items = items.filter((it) => it.typeWord === t);
+  }
+  if (filterBundleHex.value.trim()) {
+    const b = parseInt(filterBundleHex.value, 16);
+    if (Number.isFinite(b)) items = items.filter((it) => it.bundleAbsoluteOffset === b);
+  }
+  return items;
+}
+
+function pickItem(px, py) {
+  if (!scene.value) return null;
+  const items = visibleItems();
+  for (let i = items.length - 1; i >= 0; i -= 1) {
+    const it = items[i];
+    const r = itemPixelRect(it);
+    if (px >= r.x && py >= r.y && px <= r.x + r.w && py <= r.y + r.h) {
+      return it;
+    }
+  }
+  return null;
+}
+
+const layerOptions = computed(() => {
+  if (!scene.value) return ['all'];
+  const set = new Set(['all']);
+  for (const it of scene.value.json.items) set.add(it.authoredLayer ?? 'unknown');
+  return [...set];
+});
+
+const visibleCount = computed(() => visibleItems().length);
+
+const transformStyle = computed(() => ({
+  transform: `translate(${pan.value.x}px, ${pan.value.y}px) scale(${zoom.value})`,
+  transformOrigin: '0 0',
+}));
+
+const overlayBoxes = computed(() => {
+  if (!scene.value || !showHitboxes.value) return [];
+  return visibleItems().map((it) => ({ item: it, rect: itemPixelRect(it) }));
+});
+
+// The scene canvas is inside the `v-else-if="scene"` template branch, which
+// does not mount until `loading` flips back to false. Painting during
+// `loadScene()` therefore races the DOM and leaves the canvas blank while the
+// SVG hitbox overlay still appears. Paint only after the scene branch exists.
+watch(
+  [scene, loading, canvasWidth, canvasHeight],
+  async ([nextScene, isLoading, width, height]) => {
+    if (!nextScene || isLoading || !width || !height) return;
+    await nextTick();
+    fitToContainer();
+    drawScene();
+  },
+  { immediate: true },
+);
+
+// Trigger a canvas repaint whenever any input that affects drawing changes.
+// `visibleItems()` is not wrapped in a computed (it returns a fresh array),
+// so we watch the underlying inputs explicitly.
+watch(
+  [hiddenIds, showOnlyLayer, filterTypeHex, filterBundleHex],
+  () => { drawScene(); },
+);
+
+function strokeFor(item) {
+  if (item === selected.value) return '#4ea1ff';
+  if (item === hovered.value) return '#ffb24a';
+  if (item.placeholder) return 'rgba(220, 80, 220, 0.6)';
+  return 'rgba(255,255,255,0.13)';
+}
+function strokeWidthFor(item) {
+  return (item === selected.value || item === hovered.value) ? 2 : 1;
+}
+function reset11() { zoom.value = 1; pan.value = { x: 0, y: 0 }; }
+
+onMounted(loadIndex);
+</script>
+
+<template>
+  <div class="app">
+    <header class="topbar">
+      <div class="title">PSX Map Debug Viewer</div>
+      <label>Map
+        <select v-model="selectedMap">
+          <option v-for="m in mapList" :key="m" :value="m">{{ m }}</option>
+        </select>
+      </label>
+      <label>Variant
+        <select v-model="selectedVariant">
+          <option v-for="v in variantList" :key="v" :value="v">{{ v }}</option>
+        </select>
+      </label>
+      <label>Layer
+        <select v-model="showOnlyLayer">
+          <option v-for="l in layerOptions" :key="l" :value="l">{{ l }}</option>
+        </select>
+      </label>
+      <label>typeWord <input v-model="filterTypeHex" placeholder="hex" size="6" /></label>
+      <label>bundle <input v-model="filterBundleHex" placeholder="hex" size="8" /></label>
+      <label class="check"><input type="checkbox" v-model="showHitboxes" /> hitboxes</label>
+      <button @click="fitToContainer">Fit</button>
+      <button @click="reset11">1:1</button>
+      <button v-if="hiddenIds.size" @click="clearHidden" title="Restore all shift+click-hidden items">Show hidden ({{ hiddenIds.size }})</button>
+      <span class="muted">visible: {{ visibleCount }} · zoom {{ zoom.toFixed(2) }}× · shift+click to hide</span>
+    </header>
+
+    <main class="layout">
+      <section
+        class="canvas"
+        ref="containerRef"
+        @wheel="onWheel"
+        @mousedown="onMouseDown"
+        @mousemove="onMouseMove"
+        @mouseup="onMouseUp"
+        @mouseleave="onMouseLeave"
+        @click="onClick"
+      >
+        <div v-if="indexError" class="error">Index error: {{ indexError }}</div>
+        <div v-else-if="sceneError" class="error">{{ sceneError }}</div>
+        <div v-else-if="loading" class="muted center">Loading…</div>
+        <div v-else-if="scene" class="stage" :style="transformStyle">
+          <canvas
+            ref="canvasRef"
+            class="map-canvas"
+            :width="canvasWidth"
+            :height="canvasHeight"
+          />
+          <svg
+            v-if="canvasWidth"
+            class="overlay"
+            :width="canvasWidth"
+            :height="canvasHeight"
+            :viewBox="`0 0 ${canvasWidth} ${canvasHeight}`"
+          >
+            <rect
+              v-for="entry in overlayBoxes"
+              :key="entry.item.recordIndex"
+              :x="entry.rect.x"
+              :y="entry.rect.y"
+              :width="entry.rect.w"
+              :height="entry.rect.h"
+              fill="none"
+              :stroke="strokeFor(entry.item)"
+              :stroke-width="strokeWidthFor(entry.item)"
+              vector-effect="non-scaling-stroke"
+            />
+          </svg>
+        </div>
+      </section>
+
+      <aside class="sidebar">
+        <h3>Hover</h3>
+        <ItemPanel :item="hovered" :map-stem="selectedMap" />
+        <h3>Selected
+          <button v-if="selected" class="mini" @click="hideItem(selected)">hide</button>
+        </h3>
+        <ItemPanel :item="selected" :map-stem="selectedMap" :show-copy="true" />
+        <template v-if="hiddenList.length">
+          <h3>Hidden ({{ hiddenList.length }})
+            <button class="mini" @click="clearHidden">restore all</button>
+          </h3>
+          <ul class="hidden-list">
+            <li v-for="it in hiddenList" :key="it.recordIndex">
+              #{{ it.recordIndex }} t0x{{ it.typeWord.toString(16) }} {{ it.authoredLayer }}
+              <button class="mini" @click="unhideItem(it)">show</button>
+            </li>
+          </ul>
+        </template>
+      </aside>
+    </main>
+  </div>
+</template>
+
+<style scoped>
+.app { display: flex; flex-direction: column; height: 100vh; }
+.topbar {
+  display: flex; gap: 12px; align-items: center;
+  padding: 8px 12px; background: var(--panel); border-bottom: 1px solid var(--border);
+  flex-wrap: wrap;
+}
+.topbar label { display: flex; gap: 4px; align-items: center; font-size: 13px; color: var(--muted); }
+.topbar label.check { color: var(--text); }
+.topbar input { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 4px; padding: 3px 6px; }
+.title { font-weight: bold; margin-right: 12px; }
+.muted { color: var(--muted); font-size: 12px; }
+
+.layout { display: flex; flex: 1; min-height: 0; }
+.canvas {
+  flex: 1; position: relative; overflow: hidden;
+  background: #0a0a0a;
+  cursor: grab;
+}
+.canvas:active { cursor: grabbing; }
+.stage { position: absolute; top: 0; left: 0; }
+.map-canvas { display: block; image-rendering: pixelated; user-select: none; -webkit-user-drag: none; background: rgb(18, 18, 18); }
+.overlay { position: absolute; top: 0; left: 0; pointer-events: none; }
+
+.sidebar {
+  width: 380px; background: var(--panel); border-left: 1px solid var(--border);
+  overflow: auto; padding: 12px;
+}
+.sidebar h3 { margin: 8px 0 4px; font-size: 12px; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 6px; }
+.sidebar .mini { font-size: 10px; padding: 1px 6px; text-transform: none; }
+.hidden-list { list-style: none; padding: 0; margin: 0 0 8px; font-size: 11px; }
+.hidden-list li { display: flex; justify-content: space-between; align-items: center; padding: 2px 4px; border-bottom: 1px solid var(--border); }
+
+.error { color: #ff6b6b; padding: 16px; }
+.center { padding: 16px; }
+</style>

psx-map-exporter/viewer/src/ItemPanel.vue

@@ -0,0 +1,102 @@
+<script setup>
+import { computed } from 'vue';
+
+const props = defineProps({
+  item: { type: Object, default: null },
+  mapStem: { type: String, default: null },
+  showCopy: { type: Boolean, default: false },
+});
+
+function fmtHex(value, pad = 0) {
+  if (value === null || value === undefined) return '—';
+  const n = Number(value);
+  if (!Number.isFinite(n)) return String(value);
+  return '0x' + n.toString(16).padStart(pad, '0');
+}
+
+function copyJson() {
+  if (!props.item) return;
+  navigator.clipboard?.writeText(JSON.stringify(props.item, null, 2));
+}
+
+const rawWordsHex = computed(() => {
+  if (!props.item?.rawWords) return null;
+  return props.item.rawWords.map((w) => w.toString(16).padStart(4, '0')).join(' ');
+});
+
+// Sprite preview URL: matches the layout written by writeBundleCache and
+// served by vite.config.js /sprites middleware:
+//   /sprites/<mapStem>/bundle_<absoluteOffset:8x>/frame_<frameIndex:3d>.png
+const spriteUrl = computed(() => {
+  if (!props.item || !props.mapStem) return null;
+  const off = props.item.bundleAbsoluteOffset;
+  const frame = props.item.frameIndex;
+  if (!Number.isFinite(off) || !Number.isInteger(frame)) return null;
+  const offHex = off.toString(16).padStart(8, '0');
+  const frameStr = String(frame).padStart(3, '0');
+  return `/sprites/${props.mapStem}/bundle_${offHex}/frame_${frameStr}.png`;
+});
+</script>
+
+<template>
+  <div v-if="!item" class="muted">— nothing —</div>
+  <template v-else>
+    <div v-if="spriteUrl" class="preview">
+      <img :src="spriteUrl" :alt="`bundle ${fmtHex(item.bundleAbsoluteOffset, 8)} frame ${item.frameIndex}`" />
+      <div class="preview-caption">
+        bundle {{ fmtHex(item.bundleAbsoluteOffset, 8) }} · frame {{ item.frameIndex }}
+        · {{ item.width }}×{{ item.height }} (anchor {{ item.originX }},{{ item.originY }})
+      </div>
+    </div>
+    <table class="kv">
+      <tbody>
+        <tr><th>recordIndex</th><td>{{ item.recordIndex }}</td></tr>
+        <tr><th>instanceId</th><td>{{ item.instanceId }}</td></tr>
+        <tr><th>typeWord</th><td>{{ fmtHex(item.typeWord, 2) }} ({{ item.typeWord }})</td></tr>
+        <tr><th>laneWord</th><td>{{ fmtHex(item.laneWord, 4) }}</td></tr>
+        <tr><th>bundle abs offset</th><td>{{ fmtHex(item.bundleAbsoluteOffset, 8) }}</td></tr>
+        <tr><th>bundleSlot</th><td>{{ item.bundleSlot }}</td></tr>
+        <tr><th>bundleSource</th><td>{{ item.bundleSource }}</td></tr>
+        <tr><th>frameIndex</th><td>{{ item.frameIndex }} / req {{ item.requestedFrameIndex }}</td></tr>
+        <tr><th>palette</th><td>def {{ item.defaultPaletteIndex }} → res {{ item.resolvedPaletteIndex }} <span class="muted">({{ item.paletteFormula }})</span></td></tr>
+        <tr><th>mappingSource</th><td>{{ item.mappingSource }}</td></tr>
+        <tr><th>authoredLayer</th><td>{{ item.authoredLayer }}</td></tr>
+        <tr><th>sourceFamily</th><td>{{ item.sourceFamily }}</td></tr>
+        <tr><th>screen X,Y</th><td>{{ item.screenX }}, {{ item.screenY }}</td></tr>
+        <tr><th>world X,Y,Z</th><td>{{ item.worldX }}, {{ item.worldY }}, {{ item.worldZ }}</td></tr>
+        <tr><th>draw X,Y</th><td>{{ item.drawX }}, {{ item.drawY }}</td></tr>
+        <tr><th>size</th><td>{{ item.width }} × {{ item.height }} (origin {{ item.originX }},{{ item.originY }})</td></tr>
+        <tr><th>flipped</th><td>{{ item.flipped }}</td></tr>
+        <tr><th>stage</th><td>{{ item.stage }}</td></tr>
+        <tr v-if="rawWordsHex"><th>rawWords</th><td><code>{{ rawWordsHex }}</code></td></tr>
+      </tbody>
+    </table>
+    <button v-if="showCopy" @click="copyJson">Copy JSON</button>
+  </template>
+</template>
+
+<style scoped>
+.kv { width: 100%; border-collapse: collapse; }
+.kv th { text-align: left; color: var(--muted); font-weight: normal; padding: 2px 6px; vertical-align: top; width: 130px; font-size: 12px; }
+.kv td { padding: 2px 6px; word-break: break-all; font-size: 12px; }
+.kv code { font-size: 11px; }
+.muted { color: var(--muted); font-size: 12px; }
+button { margin-top: 6px; }
+.preview {
+  margin-bottom: 8px;
+  padding: 6px;
+  background: rgba(255, 255, 255, 0.04);
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  border-radius: 4px;
+  text-align: center;
+}
+.preview img {
+  max-width: 100%;
+  max-height: 200px;
+  image-rendering: pixelated;
+  background:
+    linear-gradient(45deg, rgba(255,255,255,0.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.06) 75%) 0 0 / 16px 16px,
+    linear-gradient(45deg, rgba(255,255,255,0.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.06) 75%) 8px 8px / 16px 16px;
+}
+.preview-caption { font-size: 11px; color: var(--muted); margin-top: 4px; }
+</style>

psx-map-exporter/viewer/src/main.js

@@ -0,0 +1,5 @@
+import { createApp } from 'vue';
+import App from './App.vue';
+import './style.css';
+
+createApp(App).mount('#app');

psx-map-exporter/viewer/src/style.css

@@ -0,0 +1,38 @@
+:root {
+  color-scheme: dark;
+  font-family: ui-sans-serif, system-ui, sans-serif;
+  --bg: #121212;
+  --panel: #1c1c1f;
+  --panel-2: #25252a;
+  --border: #2f2f36;
+  --text: #e6e6e6;
+  --muted: #9aa0a6;
+  --accent: #4ea1ff;
+  --warn: #ffb24a;
+}
+
+* { box-sizing: border-box; }
+
+html, body, #app {
+  margin: 0;
+  height: 100%;
+  background: var(--bg);
+  color: var(--text);
+}
+
+button, select {
+  background: var(--panel-2);
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 4px 8px;
+  font: inherit;
+  cursor: pointer;
+}
+
+button:hover, select:hover { border-color: var(--accent); }
+
+input[type="checkbox"] { accent-color: var(--accent); }
+
+a { color: var(--accent); text-decoration: none; }
+a:hover { text-decoration: underline; }

psx-map-exporter/viewer/vite.config.js

@@ -0,0 +1,110 @@
+import { defineConfig } from 'vite';
+import vue from '@vitejs/plugin-vue';
+import path from 'node:path';
+import fs from 'node:fs/promises';
+
+const RENDER_ROOT = path.resolve(__dirname, '..', '.output-render');
+const CACHE_ROOT = path.resolve(__dirname, '..', '.cache');
+
+// Tiny dev plugin that exposes the .output-render directory at /render and
+// serves a /api/index endpoint enumerating maps and variants. Keeps the app
+// dependency-free of any external server.
+function renderRootPlugin() {
+  return {
+    name: 'psx-render-root',
+    configureServer(server) {
+      server.middlewares.use('/render', async (req, res, next) => {
+        try {
+          const url = decodeURIComponent(req.url.split('?')[0]);
+          const filePath = path.join(RENDER_ROOT, url);
+          if (!filePath.startsWith(RENDER_ROOT)) {
+            res.statusCode = 403;
+            res.end('Forbidden');
+            return;
+          }
+          const stat = await fs.stat(filePath);
+          if (stat.isDirectory()) {
+            const entries = await fs.readdir(filePath, { withFileTypes: true });
+            res.setHeader('Content-Type', 'application/json');
+            res.end(JSON.stringify(entries.map((e) => ({ name: e.name, isDir: e.isDirectory() }))));
+            return;
+          }
+          const ext = path.extname(filePath).toLowerCase();
+          const mime = ext === '.png' ? 'image/png'
+            : ext === '.json' ? 'application/json'
+            : ext === '.log' ? 'text/plain'
+            : 'application/octet-stream';
+          res.setHeader('Content-Type', mime);
+          res.setHeader('Cache-Control', 'no-cache');
+          const data = await fs.readFile(filePath);
+          res.end(data);
+        } catch (error) {
+          if (error.code === 'ENOENT') {
+            res.statusCode = 404;
+            res.end('Not found');
+            return;
+          }
+          next(error);
+        }
+      });
+
+      server.middlewares.use('/api/index', async (req, res) => {
+        try {
+          const indexPath = path.join(RENDER_ROOT, 'index.json');
+          const data = await fs.readFile(indexPath, 'utf8');
+          res.setHeader('Content-Type', 'application/json');
+          res.setHeader('Cache-Control', 'no-cache');
+          res.end(data);
+        } catch (error) {
+          res.statusCode = 500;
+          res.end(JSON.stringify({ error: error.message }));
+        }
+      });
+
+      // Serve per-map sprite cache: /sprites/<map>/bundle_<hex>/frame_NNN.png
+      // The exporter writes individual decoded sprite PNGs into
+      // <projectRoot>/.cache/<mapStem>/sprites/, sharing the cache between
+      // both the auto and region01 variants of the same map (bundle decoding
+      // is invariant to the record-set choice).
+      server.middlewares.use('/sprites', async (req, res, next) => {
+        try {
+          const url = decodeURIComponent(req.url.split('?')[0]);
+          // url like "/L2/bundle_00085c40/frame_000.png"
+          // map to "<CACHE_ROOT>/L2/sprites/bundle_00085c40/frame_000.png"
+          const segments = url.split('/').filter(Boolean);
+          if (segments.length < 2) {
+            res.statusCode = 404;
+            res.end('Not found');
+            return;
+          }
+          const [mapStem, ...rest] = segments;
+          const filePath = path.join(CACHE_ROOT, mapStem, 'sprites', ...rest);
+          if (!filePath.startsWith(CACHE_ROOT)) {
+            res.statusCode = 403;
+            res.end('Forbidden');
+            return;
+          }
+          const data = await fs.readFile(filePath);
+          res.setHeader('Content-Type', 'image/png');
+          res.setHeader('Cache-Control', 'no-cache');
+          res.end(data);
+        } catch (error) {
+          if (error.code === 'ENOENT') {
+            res.statusCode = 404;
+            res.end('Not found');
+            return;
+          }
+          next(error);
+        }
+      });
+    },
+  };
+}
+
+export default defineConfig({
+  plugins: [vue(), renderRootPlugin()],
+  server: {
+    port: 5180,
+    strictPort: false,
+  },
+});