fix: 显伤层报错

src/core/render/preset/block.ts

@@ -130,24 +130,20 @@ export class BlockCacher<
             if (deep & (1 << i)) {
                 const nowIndex = index * this.cacheDepth + i;
                 const item = this.cache.get(nowIndex);
-                if (item) {
-                    item.destroy();
+                item?.destroy();
                 this.cache.delete(nowIndex);
             }
         }
     }
-    }
 
     /**
      * 清空指定索引的缓存，与 {@link clearCache} 不同的是，这里会直接清空对应索引的缓存，而不是指定分块的缓存（分块->void）
      */
-    clearCacheByIndex(index: number, func: (item: T) => void) {
+    clearCacheByIndex(index: number) {
         const item = this.cache.get(index);
-        if (item) {
-            item.destroy();
+        item?.destroy();
         this.cache.delete(index);
     }
-    }
 
     /**
      * 清空所有缓存

src/core/render/preset/damage.ts

@@ -503,7 +503,8 @@ export class Damage extends RenderItem<EDamageEvent> {
             this.emit('dirtyUpdate', v);
 
             // 否则依次渲染并写入缓存
-            const temp = cache?.canvas ?? new MotaOffscreenCanvas2D();
+            const temp =
+                block.cache.get(v)?.canvas ?? new MotaOffscreenCanvas2D();
             temp.clear();
             temp.setHD(true);
             temp.setAntiAliasing(true);