蟒蛇-我的球/球棒碰撞和反射有什么问题？

Question

我写了一个突破式的游戏，除了球棒碰撞和反射之外，它都可以工作。如果球击中球棒时从左向右移动，那么它应该起作用：

如果它撞到左端，它会沿着原来的方向反弹。如果它撞到右端，它会沿着相同的方向反弹

对于从右向左的方向，反之亦然。以及：

如果它击中中间区域，它会以相同的角度反弹如果它击中中间的左/右区域，它会反弹回来，角度略有变化。

它有时也会穿过球棒，即使它在球棒上方，也应该反弹，这很令人困惑，但我认为可能是由于“BH==Bat. y线”，因为球以一个角度移动，所以可能会稍微越过并继续前进。

代码：（BAW/H=球拍宽度/高度，BW/H=球宽度/高度）

# check with bat

if theball.y+BH == thebat.y and (theball.x >= thebat.x-5 and theball.x <= thebat.x+BATW): 

# collision in centre - rebounds with angle reflection == angle incidence

    if theball.cx>= thebat.x+40 and theball.cx<=thebat.x+60:
        theball.dy = -theball.dy
        return

    # else find ball direction, do all areas for each direction

    if theball.oldx < theball.x: # ball moving left to right, find which area: ends, mid lef, mid right, centre

        # collision with left end

        if theball.cx<= thebat.x+10:

        # ball rebounds back in direction it came from

            theball.dx = - theball.dx
            theball.dy = - theball.dy
            return

        # collision with right end

        if theball.cx >= thebat.x+90:

            angle -= 10
            if angle < MIN_ANGLE:
                angle = MIN_ANGLE

            theball.dx, theball.dy = calc_dxdy(angle)
            return  

        # middle left and right 

        # mid left

        if (theball.cx > thebat.x+10 and theball.cx < thebat.x+40):

            angle -=5
            if angle <= MIN_ANGLE:
                angle = MIN_ANGLE
                theball.dx, theball.dy = calc_dxdy(angle)
                return

        # mid right

        if  (theball.cx > thebat.x+60 and theball.cx < thebat.x+90):

            angle +=5
            if angle >= MAX_ANGLE:
                angle = MAX_ANGLE
                theball.dx, theball.dy = calc_dxdy(angle)
                return  

    # ball moving right to left

    if theball.oldx > theball.x: # ball moving right to left, find which area: ends, mid lef, mid right, centre

        # collision with right end

        if theball.cx>= thebat.x+90: 

        # ball rebounds back in direction it came from

            theball.dx = - theball.dx
            theball.dy = - theball.dy
            return

        # collision with right end

        if theball.cx <= thebat.x+10:

            angle += 10
            if angle > MAX_ANGLE:
                angle = MAX_ANGLE

            theball.dx, theball.dy = calc_dxdy(angle)
            return  

        # middle left and right 

        # mid left

        if (theball.cx > thebat.x+10 and theball.cx < thebat.x+40):

            angle +=5
            if angle <= MAX_ANGLE:
                angle = MAX_ANGLE
                theball.dx, theball.dy = calc_dxdy(angle)
                return

        # mid right

        if  (theball.cx > thebat.x+60 and theball.cx < thebat.x+90):

            angle -=5
            if angle >= MIN_ANGLE:
                angle = MIN_ANGLE
                theball.dx, theball.dy = calc_dxdy(angle)
                return  

Answer 1

你说得对，这是因为

theball.y+BH == thebat.y 

从某种角度来看，球不太可能处于正确的高度。试着增加一些不确定性。例如：

UNCERTAINTY = 10
if theball.y+BH - UNCERTAINTY <= thebat.y <= theball.y+BH + UNCERTAINTY and ...