Raycasting

src/npc.lua

@@ -0,0 +1,69 @@
+local Actor = require(make_path("actor2"))
+
+local NPC = Actor:new()
+
+function NPC:new(x,y)
+    local n = Actor:new(x,y)
+
+    n.spriteIndex = 69
+    n.range = 64 + 16
+    
+    n.found = false
+
+    n.enemy_x_debug = 0
+    n.enemy_x_debug = 0
+
+    --n.dir_vec_debug_x = 0
+    --n.dir_vec_debug_y = 0
+
+    n.hit_x = 0
+    n.hit_y = 0
+
+    n.raycast_frames = 0
+    n.raycast_frames_to_wait = 120
+
+    return setmetatable(n, {__index=self})
+end
+
+function NPC:update()
+    local enemy_x = cirnoInstance.x + 8
+    local enemy_y = cirnoInstance.y + 8
+
+    self.enemy_x_debug = enemy_x
+    self.enemy_y_debug = enemy_y
+
+    --local dir_vec = get_direction_vector(self.x, self.y, enemy_x, enemy_y)
+    
+    --self.dir_vec_debug_x = dir_vec.dir_x
+    --self.dir_vec_debug_y = dir_vec.dir_y
+
+    self.raycast_frames += 1
+
+    if (self.raycast_frames % self.raycast_frames_to_wait == 0) then
+        local hit_x, hit_y, hit_status = raycast(self.x, self.y, enemy_x, enemy_y, self.range, 2)
+
+        --if (raycast_hit) then
+            self.hit_x = hit_x
+            self.hit_y = hit_y
+        --end
+    
+        self.found = hit_status == true
+    end
+end
+
+function NPC:draw()
+
+    --circfill(self.x,self.y,self.range,18)
+    local col = 30
+    spr(self.spriteIndex,self.x,self.y)
+    print(string.format("Found: %s", tostring(self.found)),self.x,self.y-16,col)
+    --print(string.format("dir_x: %.2f dir_y: %.2f",self.dir_vec_debug_x, self.dir_vec_debug_y),self.x,self.y-8,28)
+    --print(string.format("hit_x: %.2f dir_y: %.2f", self.hit_x, self.hit_y),self.x, self.y,28)
+
+    --line(self.x,self.y, self.enemy_x_debug, self.enemy_y_debug, 14)
+    line(self.x,self.y, self.hit_x, self.hit_y, col)
+
+end
+
+
+return NPC