Add basic multiplayer

shared/src/helper/array.ts

@@ -0,0 +1,31 @@
+declare global {
+  interface Array<T> {
+    x: number;
+    y: number;
+  }
+
+  interface Float32Array {
+    x: number;
+    y: number;
+  }
+}
+
+const setIndexAlias = (name: string, index: number, type: any) => {
+  if (!Object.prototype.hasOwnProperty.call(type.prototype, name)) {
+    Object.defineProperty(type.prototype, name, {
+      get() {
+        return this[index];
+      },
+      set(value) {
+        this[index] = value;
+      },
+    });
+  }
+};
+
+export const applyArrayPlugins = () => {
+  setIndexAlias('x', 0, Array);
+  setIndexAlias('y', 1, Array);
+  setIndexAlias('x', 0, Float32Array);
+  setIndexAlias('y', 1, Float32Array);
+};