Question

我只是试图在子弹和敌人阵列的两个阵列中循环然后我在两者上执行hitTestObject但它似乎没有工作，直到敌人真正接近玩家或子弹。这是我的代码抱歉我的代码很草率`

// ******* IMPORTS *****
import flash.events.MouseEvent;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.events.KeyboardEvent;

//*****VARIABLES****

var leftPressed:Boolean = false;
var rightPressed:Boolean = false;
var upPressed:Boolean = false;
var shootDown:Boolean = false;

var ySpeed:int = 0;
var xSpeed:int = 0;

var scrollX:int = 0;
var scrollY:int = 0;

var speedConstant:int = 5;

var friction:Number = 0.6;

var level:Number = 1;

var bullets:Array;
var container_mc:MovieClip; 
var enemies:Array;
var tempEnemy:MovieClip;


// BUTTON EVENTS EITHER CLICKED OR NOT

left_btn.addEventListener(MouseEvent.MOUSE_DOWN, moveLeft);
right_btn.addEventListener(MouseEvent.MOUSE_DOWN, moveRight);
up_btn.addEventListener(MouseEvent.MOUSE_DOWN, moveUp);
shoot_btn.addEventListener(MouseEvent.MOUSE_DOWN, shootPressed);

left_btn.addEventListener(MouseEvent.MOUSE_UP, leftUp);
right_btn.addEventListener(MouseEvent.MOUSE_UP, rightUp);
up_btn.addEventListener(MouseEvent.MOUSE_UP, upUp);

stage.addEventListener(Event.ENTER_FRAME, makeEnemies);



player.gotoAndStop('still');


stage.addEventListener(Event.ENTER_FRAME,onenter);

function onenter(e:Event):void{
    if (rightPressed == true && leftPressed == false){
        player.x += 8;
        player.scaleX = 1;
        player.gotoAndStop("walking");
        cloud.x -= 8;


    } else if (leftPressed == true && rightPressed == false){
        player.x -= 8;
        player.scaleX = -1;
        player.gotoAndStop('walking');
        cloud.x += 8;

   } else if(upPressed == true && leftPressed == false && rightPressed == false){


       }
        else{  
        rightPressed = false;
        leftPressed = false;
        player.gotoAndStop('still')}

}
// **** MOVEMENT CONTROLS *********



function shootPressed(e:MouseEvent):void{
    shootDown = true;
    if(shootDown == true){
        fireBullet();
        testCollisions();
        }

    }


function fireBullet():void
{
    var playerDirection:String;
    if(player.scaleX < 0){
        playerDirection = "left";
    } else if(player.scaleX > 0){
        playerDirection = "right";
    }
    var bullet:Bullet = new Bullet(player.x, player.y, playerDirection);
    bullets = new Array();
    bullet.y = 288;
    stage.addChild(bullet);
    bullets.push(bullet);
    trace(bullets);

}

// BUTTON FUNCTIONS

function moveLeft(e:MouseEvent):void
{
    if(MouseEvent.MOUSE_DOWN){
    leftPressed = true;
    }else if (MouseEvent.MOUSE_UP) {
        leftPressed = false;
        }

}
function moveRight(e:MouseEvent):void
{
    if (MouseEvent.MOUSE_DOWN){
    rightPressed = true;
    }else if (MouseEvent.MOUSE_UP){
        rightPressed = false;
        }

}
function moveUp(e:MouseEvent):void
{
    if(MouseEvent.MOUSE_DOWN){
        upPressed = true;
        } else if (MouseEvent.MOUSE_UP) {
            upPressed = false;
            }

}



function leftUp(e:MouseEvent):void
{
    leftPressed = false;
}
function rightUp(e:MouseEvent):void
{
    rightPressed = false;
}
function upUp(e:MouseEvent):void
{
    upPressed = false;
}




enemies = new Array();

//Call this function for how many enemies you want to make...
function makeEnemies(e:Event):void
{
    var chance:Number = Math.floor(Math.random() * 60);
if (chance <= 2){

    //Make sure a Library item linkage is set to Enemy...
    tempEnemy = new enemy();
    tempEnemy.speed = 80;
    tempEnemy.x = Math.round(Math.random() * stage.stageWidth) * -10;
    addChild(tempEnemy);
    enemies.push(tempEnemy);
    moveEnemies();
    }
}


function moveEnemies():void
{
    var tempEnemy:MovieClip;
    for (var i:int =enemies.length-1; i>=0; i--)
    {
        tempEnemy = enemies[i];
        tempEnemy.x += tempEnemy.speed;
        tempEnemy.y = 285;
    }
}



//Check for collisions between an enemies array and a Lasers array
function testCollisions():void
{

    var tempEnemy:MovieClip;
    var tempLaser:MovieClip;

    Enemy:for (var i:int=enemies.length-1; i >= 0; i--)
    {
        tempEnemy = enemies[i];
        for (var j:int=bullets.length-1; j>=0; j--)
        {
            tempLaser = bullets[j];
            if (tempLaser.hitTestObject(tempEnemy))
            {
                removeChild(tempEnemy);
                trace("BULLET HIT");
                break Enemy;
            } else if(tempEnemy.hitTestObject(player)){
                removeChild(tempEnemy);
                trace("HIT PLAYER");
                }
        }
    }
}

`

Answer 1

看起来好像你只是在按下拍摄按钮时检查碰撞，这可以解释为什么它没有快速发生。我怀疑你想要每帧运行testCollisions：

stage.addEventListener(Event.ENTER_FRAME, testCollisions);

ActionScript 3中的hitTestObject问题

1 个答案: