added a chest_treasure to the game objects: map_start (#149)

Part of #2

src/gameObjects/map_start/index.js

@@ -9,6 +9,7 @@ import { misterFu } from './misterFu.gameObject';
 import { jokeTellerNPC } from './jokeTellerNPC.gameObject';
 import { tvVideo } from './tv_main_room_video.gameObject';
 import { randNpcsOnRestroomSinkCounch } from './randNpcsOnRestroomSinkCounch.gameObject';
+import { treasureChest } from './treasureChest.gameObject';
 
 export const gameObjects = [
     bruno,
@@ -21,6 +22,7 @@ export const gameObjects = [
     randNpcsOnRestroomSinkCounch,
     misterFu,
     tvVideo,
+    treasureChest,
 ];
 
 export default gameObjects;

src/gameObjects/map_start/treasureChest.gameObject.js

@@ -0,0 +1,50 @@
+import { scaleFactor } from '../../constants';
+
+export const treasureChest = (k, map) => {
+    k.loadSprite(
+        'treasureChestClosed',
+        './assets/sprites/treasure_chest_closed.png'
+    );
+    k.loadSprite(
+        'treasureChestOpen',
+        './assets/sprites/treasure_chest_open.png'
+    );
+
+    k.loadSound('chestOpen', './assets/sounds/chest_opening.wav');
+
+    const chestPosition = { x: 200, y: 100 };
+
+    let isOpen = false;
+
+    const chestObj = k.make([
+        k.sprite('treasureChestClosed'),
+        k.area(),
+        k.pos(
+            map.pos.x + chestPosition.x / scaleFactor,
+            map.pos.y + chestPosition.y / scaleFactor
+        ),
+        k.scale(0.5),
+        'treasureChest',
+    ]);
+
+    chestObj.onCollide('player', () => {
+        if (!isOpen) {
+            isOpen = true;
+            k.play('chestOpen');
+
+            chestObj.use(k.sprite('treasureChestOpen'));
+            const msg = k.add([
+                k.text('ohh you found the secret treasure!', {
+                    size: 15,
+                }),
+                k.pos(chestObj.pos.x, chestObj.pos.y + 20),
+            ]);
+
+            k.wait(4, () => {
+                msg.destroy();
+            });
+        }
+    });
+
+    return chestObj;
+};