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i am creating a brick breaker game in which ball is hitting a square object. i want to change the direction of ball when he hit square object.
square is of 15 px. and
ball is of 10 px.
for example
if hits on the right side, Speed in x direction will reverse
if hits on the left side, Speed in x direction will reverse
if hits on the up side, Speed in y direction will reverse
if hits on the down side , Speed in y direction will reverse.
I tried it hard but still can not understand how to describe each side of the box. any help will be appreciated. here is the code:
import flash.events.*;
import flash.display.*;
stop();
// speed of ball in x and y
var speedx : Number = 10;
var speedy : Number = 10;
// start running
function begin_code (event:MouseEvent):void{
addEventListener(Event.ENTER_FRAME,move_ball);
stage.addEventListener(MouseEvent.MOUSE_DOWN,by_key);
addEventListener(Event.ENTER_FRAME,ht_mc);
start_game.alpha=0;
}
start_game.addEventListener(MouseEvent.CLICK, begin_code) ;
//start ball moving
function move_ball(e:Event):void{
Ball.x += speedx;
Ball.y += speedy;
Ball.rotation +=speedx;
var ballposition : Number = Ball.x -Hitbar.x;
var ballhitpercent : Number = (ballposition /(Hitbar.width-Ball.width));
if(Ball.x <= x1.x+Ball.width/2){
speedx = speedx *-1;
}
if(Ball.x >= x2.x-Ball.width/2){
speedx = speedx *-1;
}
if(Ball.y <=(55)){
speedy = speedy *-1;
}
else if (Ball.y >= stage.stageHeight-Ball.height){
speedy = speedy *-1;
trace("hit y");
}
//start ball angle
else if(Ball.hitTestObject(Hitbar)){
speedx = ballhitpercent*10;
speedy = speedy *-1;
}
}
//start hitbar moving
// code for keys!!!!!!!!!
var distance : Number = 0;
function by_key(e:MouseEvent):void{
if (mouseX>Hitbar.x){
distance = (mouseX-Hitbar.x);
Hitbar.x += distance;
}
else if (mouseX<Hitbar.x){
distance = (Hitbar.x-mouseX);
Hitbar.x -= distance;
}
}
//restart
function by_key_up(e:MouseEvent):void{
}
stage.addEventListener(MouseEvent.MOUSE_UP, by_key_up);
function pLimiter(e:Event):void{
Hitbar.y = 406.2;
if (Hitbar.hitTestObject(x1)){
Hitbar.x = 32.6;
}
if (Hitbar.hitTestObject(x2)){
Hitbar.x = 287.55;
}
}
addEventListener(Event.ENTER_FRAME, pLimiter);
// Bricks set hit
var pickup:Array =new Array();
for (var i = 0;i<numChildren;i++){
if(getChildAt(i) is abc){
pickup.push(getChildAt(i));
}
}
function hittest_box(e:Event):void{
for (var f = 0;f<pickup.length;f++){
if (Ball.hitTestObject(pickup
if(pickup
pickup
}
}
}
}
function ht_mc(e:Event):void{
for (var j = 0;j<pickup.length;j++){
if(Ball.x > pickup
if (Ball.hitTestObject(pickup
speedy = speedy *-1;
if(pickup
pickup
trace("box y");
}
}
}
else if(Ball.y > pickup
if (Ball.hitTestObject(pickup
if(pickup
pickup
speedx = speedx *-1;
trace("box x");
}
}
}
}
}
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you can compare the ball's x,y properties with the box'es x,y properties and determine which side is being hit.