🎉 initial commit

src/NetworkAdapter.ts

@@ -0,0 +1,19 @@
+import type { GameAction } from './types'
+import { stateManager } from './StateManager'
+
+/** All state mutations go through an adapter.
+ *  Swap LocalAdapter for WebSocketAdapter to enable multiplayer. */
+export interface NetworkAdapter {
+  send(action: GameAction): void
+  onAction?: (action: GameAction) => void
+}
+
+/** Singleplayer: apply actions immediately and synchronously */
+export class LocalAdapter implements NetworkAdapter {
+  onAction?: (action: GameAction) => void
+
+  send(action: GameAction): void {
+    stateManager.apply(action)
+    this.onAction?.(action)
+  }
+}