i added score but needs to be updated per room

homepage_html/game.js

@@ -50,6 +50,14 @@ let mobList = [];
 let bounds;
 let playerCollided;
 
+let score = 0;
+let something = "Score:" + score; 
+let txt = new PIXI.Text(something,{fontFamily: "Arial",fontSize: 15, fill: "#FFFFFF"});
+txt.x = app.view.width / 10;
+txt.y = app.view.height / 4;
+txt.anchor.set = 0.5;
+app.stage.addChild(txt);
+
 let nextX;
 let nextY;
 
@@ -429,6 +437,8 @@ function bulletCollider(delta){
 						app.stage.removeChild(map.currentRoom.enemies[j].sprite);
 						map.currentRoom.numOfEnemies--;
 						map.currentRoom.enemies.splice(j, 1);
+						score += 100;
+						txt.text ="Score:" + score;
 					}
 				}
 			}