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Fix busted hit detection

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This commit is contained in:
Bill 2021-07-15 02:42:16 -04:00
parent 1571d0ac89
commit cbc6b3f25c
2 changed files with 38 additions and 15 deletions
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47
src/room/renderer/utils/ExtendedSprite.ts
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@ -78,10 +78,23 @@ export class ExtendedSprite extends Sprite
if(!texture || !baseTexture || !baseTexture.valid) return false;
const resolution = baseTexture.resolution;
const x = (point.x * sprite.scale.x);
const y = (point.y * sprite.scale.y);
if(!sprite.getLocalBounds().contains(x, y)) return false;
let dx = (x + texture.frame.x);
let dy = (y + texture.frame.y);
if(texture.trim)
{
dx -= texture.trim.x;
dy -= texture.trim.y;
}
dx = Math.round(dx) * resolution;
dy = Math.round(dy) * resolution;
if(((dx < 0) || (dx > texture.width)) || ((dy < 0) || (dy > texture.height))) return false;
//@ts-ignore
if(!baseTexture.hitMap)
@ -109,15 +122,13 @@ export class ExtendedSprite extends Sprite
}
//@ts-ignore
const hitMap = baseTexture.hitMap;
//@ts-ignore
const width = baseTexture.hitMapWidth;
const resolution = baseTexture.resolution;
const dx = Math.round((x + texture.frame.x) * resolution);
const dy = Math.round((y + texture.frame.y) * resolution);
const index = (((dy * width) + dx) * 4);
const hitMap = (baseTexture.hitMap as Uint32Array);
return ((hitMap[index + 3] !== undefined) && (hitMap[index + 3] > sprite.alphaTolerance));
const ind = (dx + dy * baseTexture.realWidth);
const ind1 = ind % 32;
const ind2 = ind / 32 | 0;
return (hitMap[ind2] & (1 << ind1)) !== 0;
}
private static generateHitMap(baseTexture: BaseTexture, tempCanvas: HTMLCanvasElement = null): boolean
@ -162,10 +173,22 @@ export class ExtendedSprite extends Sprite
const height = canvas.height;
const imageData = context.getImageData(0, 0, width, height);
const hitmap = new Uint32Array(Math.ceil(width * height / 32));
const threshold = 128;
for(let i = 0; i < width * height; i++)
{
const ind1 = i % 32;
const ind2 = i / 32 | 0;
if(imageData.data[i * 4 + 3] >= threshold)
{
hitmap[ind2] = hitmap[ind2] | (1 << ind1);
}
}
//@ts-ignore
baseTexture.hitMap = imageData.data;
//@ts-ignore
baseTexture.hitMapWidth = width;
baseTexture.hitMap = hitmap;
return true;
}