Need help with wall collision to stop player from moving through

programming flash
1

[FONT=arial][COLOR=#222222]Hello :slight_smile: I’m making a simple test game to learn AS3. I’ve started with learning the codes for keyboard press movements. Then when I got to the wall collision, I’m stumped. The trace output keeps firing regardless if the player touches the wall or not.

I’d appreciate if any of you can help a beginner like me :slight_smile:

I just have 2 movieclip objects on the stage, player_mc and wall_mc.

Here’s my .as code so far



package {
    import flash.display.*;
    import flash.events.*;


    public class testhit extends MovieClip {


        // initialize arrow variables
        public var leftArrow:Boolean = false;
        public var rightArrow:Boolean = false;
        public var upArrow:Boolean = false;
        public var downArrow:Boolean = false;


        // player speed
        public var speed:Number = 10;


        // game setup
        public function startGame() {
            this.addEventListener(Event.ENTER_FRAME,gameLoop);
            stage.addEventListener(KeyboardEvent.KEY_DOWN,keyPressedDown);
            stage.addEventListener(KeyboardEvent.KEY_UP,keyPressedUp);
            stage.addEventListener(Event.ENTER_FRAME,movePlayer);
        }


        // arrow keys pressed
        public function keyPressedDown(event:KeyboardEvent) {
            if (event.keyCode == 37) {
                leftArrow = true;
            } else if (event.keyCode == 39) {
                rightArrow = true;
            } else if (event.keyCode == 38) {
                upArrow = true;
            } else if (event.keyCode == 40) {
                downArrow = true;
            }
        }


        // arrow keys released
        public function keyPressedUp(event:KeyboardEvent) {
            if (event.keyCode == 37) {
                leftArrow = false;
            } else if (event.keyCode == 39) {
                rightArrow = false;
            } else if (event.keyCode == 38) {
                upArrow = false;
            } else if (event.keyCode == 40) {
                downArrow = false;
            }
        }


        // player movement
        public function movePlayer(event:Event) {
            if (leftArrow) {
                player_mc.scaleX = -1;
                player_mc.x -=  speed;
            }
            if (rightArrow) {
                player_mc.scaleX = 1;
                player_mc.x +=  speed;
            }
            if (upArrow) {
                player_mc.y -=  speed;
            }
            if (downArrow) {
                player_mc.y +=  speed;
            }
        }


        // check wall collission loop
        public function gameLoop(event:Event) {


            wallHit();
        }


        // wall collission
        public function wallHit() {


            if (wall_mc.hitTestObject(player_mc)) {
                trace("hit");
            }
        }
    }
}

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