Collision detection issues - help please?

Question

Hi guys,
I'm currently developing my own shoot em'up game where I'm having  problems setting up the collision detention for bullets hitting/damaging  the enemy, I'm not sure why it isn't working. I'm got four classes for  this game so far which communicate to each other;
Player class - movement and  bullet control/action for player
MainShapeShooter class - enemy behaviour and game logic
Bullet class - Bullet properies
Collision class - Collision between player and enemies
Note: player and enemy have collision boxes, but when the player  fires bullets, bullets go through the enemy, enemy isn't detenting the  bullets.
Player class
Code:
private function shootBullet():void
               //Bullet's velocity
               var bullet_Vx:Number=Math.cos(_angle) * -10;
               var bullet_Vy:Number=Math.sin(_angle) * -10;
               //Bullet's start position
               var radius:int =- 50;
               var bullet_StartX:Number = x + radius * Math.cos(_angle);
               var bullet_StartY:Number = y + radius * Math.sin(_angle);
               //Create bullet instance and add it to the stage
               var bullet:Bullet = new Bullet(bullet_Vx, bullet_Vy, bullet_StartX, bullet_StartY, "square");
               parent.addChild(bullet);
               MovieClip(parent).checkCollisionWithEnemies(this);
MainShapeShooter class
Code:
function onEnterFrame(event:Event):void
               if (player.hitTestObject(enemy))
                    health.meter.width--;
                    player.gotoAndStop(2);
                    else
                         player.gotoAndStop(1);
                    Collision.block(player, enemy);
                    Collision.block(player_C, enemy);
          function checkCollisionWithEnemies(bullet:MovieClip)
               //Enemy
               if (enemy!= null)
                    if (enemy.hitTestPoint(bullet.x, bullet.y,true))
                         enemy.meter.width -= 10;
                         enemy.gotoAndStop(2);
                         if (enemy.meter.width < 1)
                              enemy.stop();
                              removeChild(enemy);
                              enemy = null;
                         removeChild(bullet);
                         bullet = null;
The last 3 lines of the player class;
Code:
var bullet:Bullet = new Bullet(bullet_Vx, bullet_Vy, bullet_StartX, bullet_StartY, "square");
               parent.addChild(bullet);
               MovieClip(parent).checkCollisionWithEnemies(this);
shouldn't this allow/link to "function checkCollisionWithEnemies"  function within the MainShapeShooter class to allow the enemy to detent  the bullets. Maybe I'm missing something? :s
Any help would be greatly appreciated.
Thanks
Jonesy

Answer 1

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Adrian