feat: Position.tile

app/ecs-components/position.js

@@ -1,4 +1,29 @@
-export default {
-  x: {type: 'float32'},
-  y: {type: 'float32'},
-};
+import Schema from '@/ecs/schema.js';
+
+export default function(Component) {
+  return class Wielder extends Component {
+    instanceFromSchema() {
+      const Instance = super.instanceFromSchema();
+      const Component = this;
+      Object.defineProperty(Instance.prototype, 'tile', {
+        get: function () {
+          const {TileLayers} = Component.ecs.get(1);
+          const {Position: {x, y}} = Component.ecs.get(this.entity);
+          const {tileSize} = TileLayers.layers[0];
+          return {
+            x: (x - (x % tileSize.x)) / tileSize.x,
+            y: (y - (y % tileSize.y)) / tileSize.y,
+          }
+        },
+      });
+      return Instance;
+    }
+    static schema = new Schema({
+      type: 'object',
+      properties: {
+        x: {type: 'float32'},
+        y: {type: 'float32'},
+      },
+    });
+  }
+}