我的球/棒碰撞和反射出了什么問題？

Question

我寫了一個突破風格的游戲，除了球棒的碰撞和反射之外，其他所有功能都適用。 它應該起作用，以便如果球在擊中球時從左到右移動：

如果撞到左端，則沿原方向反彈；如果撞到右端，則沿原方向反彈

從右到左的方向反之亦然。 和：

如果擊中中間區域，則以相同的角度彈回；如果擊中中央/左/右區域，則以較小的角度彈回。

它有時甚至會越過球棒並應反彈，這令人困惑，但是我認為這可能是由於`BH == Bat.y線，因為球正以一定角度運動，所以可能稍微過去，繼續前進。

代碼：（BAW / H =球棒寬度/高度，BW / H =球棒寬度/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

您說對了，是因為

theball.y+BH == thebat.y 

在一個角度，球不太可能恰好位於正確的高度。 嘗試改為增加一些不確定性。 例如：

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