feat: game pause

src/shattered_sword/Scenes/GameLevel.ts

@@ -276,6 +276,14 @@ export default class GameLevel extends Scene {
                 this.updateStory();
             }
         }
+        if (InputWrapper.isPauseJustPressed()) {
+            if (this.gameStateStack.peek() === GameState.GAMING) {
+                this.setGameState(GameState.PAUSE);
+            }
+            else if (this.gameStateStack.peek() === GameState.PAUSE) {
+                this.setGameState();
+            }
+        }
 
         //update health UI 
         let playerAI = (<PlayerController>this.player.ai);