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我正在做簡單的pong遊戲,並且我試圖讓矩形上面的屏幕在屏幕結束時向左或向右移動。我想這樣做幾乎沒有Ifs的中MotionEvent的一部分,但它不工作,它只是離開屏幕好像有任何的arent IFS:碰撞屏幕不能正常工作
Point size = new Point();
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
display.getSize(size);
canvasWidth = size.x;
canvasHeight = size.y;
:
我用它來獲取屏幕的大小d
MotionEvent檢測:
public boolean doTouchEvent(MotionEvent event){
synchronized(mSurfaceHolder){
switch(event.getAction()){
case MotionEvent.ACTION_MOVE:{
xTouch = (int)event.getX();
yTouch = (int)event.getY();
rectLeft = (float)xTouch-200;
rectTop = (float)yTouch+25;
rectRight = (float)xTouch+200;
rectBot = (float)yTouch-25;
if(rectLeft <= 0)
rectLeft = 0;
if(rectBot >= canvasWidth)
rectBot = canvasWidth;
}
}
}
}
並繪製矩形:
public void draw(Canvas canvas) {
// TODO Auto-generated method stub
super.draw(canvas);
if(firstClick){
//canvas.drawBitmap(img, xTouch - (imgWidth/2), yTouch - (imgHeight/2), null);
canvas.drawRect(rectLeft, rectTop, rectRight, rectBot, paint);
}
}
現在有效嗎? @ imot01 – donfuxx