Fix world texture sampling

package.json

@@ -24,7 +24,7 @@
   },
   "scripts": {
     "build": "webpack --config ./webpack.config.js --mode=production",
-    "dev": "webpack serve --config ./webpack.config.js --mode=development",
+    "start": "webpack serve --config ./webpack.config.js --mode=development",
     "gh-pages": "npm run build && push-dir --dir=build --branch=gh-pages"
   },
   "author": "",

src/shaders/antsCompute.frag

@@ -24,7 +24,7 @@ float rand(vec2 co) {
 }
 
 vec2 roundUvToCellCenter(vec2 uv) {
-    return floor(uv * WORLD_SIZE) / WORLD_SIZE;
+    return floor(uv * WORLD_SIZE) / WORLD_SIZE + cellSize * 0.5;
 }
 
 bool tryGetFood(vec2 pos) {