python - what's wrong with my ball/bat collision and reflection? -

i have written breakout style game, , works apart ball bat collision , reflection. supposed work if ball moving left right hits bat:

if hits left end bounces in direction came if hits right end bounces in same direction

and vice versa right left direction. and:

if hits middle area bounces @ same angle if hits centre left/right areas bounces slight change in angle.

it goes through bat when on , should rebounding, confusing, think might due `bh == bat.y line, ball moving @ angle , might go on , carry on.

code: (baw/h = bat width/height, bw/h = ball width/height)

# check bat  if theball.y+bh == thebat.y , (theball.x >= thebat.x-5 , theball.x <= thebat.x+batw):   # collision in centre - rebounds angle reflection == angle incidence      if theball.cx>= thebat.x+40 , theball.cx<=thebat.x+60:         theball.dy = -theball.dy         return      # else find ball direction, areas each direction      if theball.oldx < theball.x: # ball moving left right, find area: ends, mid lef, mid right, centre          # collision left end          if theball.cx<= thebat.x+10:          # ball rebounds in direction came              theball.dx = - theball.dx             theball.dy = - theball.dy             return          # collision 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 , right           # mid left          if (theball.cx > thebat.x+10 , 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 , 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 left      if theball.oldx > theball.x: # ball moving right left, find area: ends, mid lef, mid right, centre          # collision right end          if theball.cx>= thebat.x+90:           # ball rebounds in direction came              theball.dx = - theball.dx             theball.dy = - theball.dy             return          # collision 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 , right           # mid left          if (theball.cx > thebat.x+10 , 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 , theball.cx < thebat.x+90):              angle -=5             if angle >= min_angle:                 angle = min_angle                 theball.dx, theball.dy = calc_dxdy(angle)                 return   

you're right it's because of

theball.y+bh == thebat.y  

at angle, ball less @ right height. try instead add uncertainty. example:

uncertainty = 10 if theball.y+bh - uncertainty <= thebat.y <= theball.y+bh + uncertainty , ...