每当我为我的播放器向上和向下滚动时，我都会遇到问题，并且我在高地然后与我的播放器一起跳下，它会干扰我的碰撞逻辑。我不确定它为什么要这样做。
例如她的视频：VIDEO
如您所见，我在高地，然后当我出于某种原因跳下时，到处都是小故障。
我的向上/向下滚动是这样的，当我的播放器 y 处于 50 时，它应该向上滚动我的播放器，当我的播放器处于 550 时，它应该随着我的播放器的下降速度向下滚动我的播放器，但是每当我在主循环中使用此代码时，它都会导致我的可碰撞矩形出现故障，即使我对所有侧面进行了碰撞以阻止播放器。
碰撞是玩家将要碰撞的矩形。
if playerman.y > 550:
for obj in object_list:
obj.y -= playerman.fall
for shot in shots:
shot.y -= playerman.fall
for collid in collids:
collid.y -= playerman.fall
tall11.y -= playerman.fall
if playerman.y < 50:
for obj in object_list:
obj.y += playerman.speed
for shot in shots:
shot.y += playerman.speed
for collid in collids:
collid.y += playerman.speed
tall11.y += playerman.speed
我的碰撞部分为玩家从左到右
platform_rect_list = [p.rect for p in collids]
player_rect = playerman.get_rect()
player_rect.topleft = (px, py)
playerman.y = py
if player_rect.collidelist(platform_rect_list) < 0:
playerman.x = px
move_right = keys[pygame.K_d]
move_left = keys[pygame.K_a]
if move_right:
for obj in object_list:
obj.x -= playerman.speed
for shot in shots:
shot.x -= playerman.speed
for collid in collids:
collid.x -= playerman.speed
tall11.x -= playerman.speed
if move_left:
for obj in object_list:
obj.x += playerman.speed
for shot in shots:
shot.x += playerman.speed
for collid in collids:
collid.x += playerman.speed
tall11.x += playerman.speed
platform_rect_list = [p.get_rect() for p in collids] # get_rect()
player_rect = playerman.get_rect()
player_rect.topleft = (px, py)
playerman.y = py
cI = player_rect.collidelist(platform_rect_list)
if cI >= 0:
# undo movement of platforms dependent on the direction and intersection distance
dx = 0
if move_right:
dx = platform_rect_list[cI].left - player_rect.right
if move_left:
dx = platform_rect_list[cI].right - player_rect.left
for collid in collids:
collid.x -= dx
collid.get_rect()
base1.x -= dx
base2.x -= dx
base3.x -= dx
base4.x -= dx
base5.x -= dx
base6.x -= dx
crate1.x -= dx
base44.x -= dx
end1.x -= dx
base45.x -= dx
stopmove1.x -= dx
text_show_collision.x -= dx
text1.x -= dx
rop1.x -= dx
text22.x -= dx
text_show_collision2.x -= dx
portal1.x -= dx
base46.x -= dx
tall11.x -= dx
for shot in shots:
shot.x -= dx
if not playerman.isJump:
playerman.y += playerman.fall
playerman.fall += 0.5
playerman.isJump = False
# For player to get on top of platform
collide = False
for collid in collids:
if playerman.get_rect().colliderect(collid.rect):
collide = True
playerman.isJump = False
playerman.JumpCount = 10
right = True
left = True
playerman.y = collid.rect.top - playerman.height
if playerman.rect.right > collid.rect.left and playerman.rect.left < collid.rect.left - playerman.width:
playerman.x = collid.rect.left - playerman.width
if playerman.rect.left < collid.rect.right and playerman.rect.right > collid.rect.right + playerman.width:
playerman.x = collid.rect.right
if playerman.direction == "jump":
playerman.direction = "Idle"
if playerman.direction == "jump2":
playerman.direction = "leftid"
if collide:
playerman.isJump = False
playerman.fall = 1
# Player jumping
if collide:
if keys[pygame.K_SPACE]:
playerman.isJump = True
right = False
left = False
playerman.fall = 0
## playerman.isJump = False <-- omit this line. already False
# What will happen when player jumps
else:
collideBottom = False
for collid in collids:
if (playerman.get_rect().colliderect(collid.rect) and
playerman.y + playerman.height > collid.rect.bottom):
collideBottom = True
playerman.y = collid.rect.bottom
break
if not collideBottom and playerman.JumpCount >= 0:
playerman.y -= (playerman.JumpCount*abs(playerman.JumpCount))*0.3
playerman.JumpCount -= 1
if playerman.direction == "right" or playerman.direction == "Idle":
playerman.direction = "jump"
if playerman.direction == "left" or playerman.direction == "leftid":
playerman.direction = "jump2"
else:
playerman.isJump = False
playerman.JumpCount = 10
# redrawing the window
redraw()
# updating the game
pygame.display.update()
# quiting the game
pygame.quit()
您可以使用 rects no images 运行并测试它，它的工作方式与跳到天空上的平台顶部然后跳下的方式相同，即使碰撞对双方都有效，由于某种原因您将开始出现故障.
答案 0 :(得分：1)
既然你想滚动，你也需要滚动播放器。为避免浮点精度出现问题，请使用播放器矩形的积分 y 坐标来检查是否需要滚动：
if playerman.get_rect().y > 550:
# scroll objects ...
for obj in object_list:
obj.y -= playerman.speed
for shot in shots:
shot.y -= playerman.speed
for collid in collids:
collid.y -= playerman.speed
tall11.y -= playerman.speed
# ... and scroll player
playerman.y -= playerman.speed
py -= playerman.speed
您可能希望使用 playerman.y - 550 而不是 playerman.speed 的量滚动：
if playerman.get_rect().y > 550:
scroll_offset = playerman.y - 550
# scroll objects ...
for obj in object_list:
obj.y -= scroll_offset
for shot in shots:
shot.y -= scroll_offset
for collid in collids:
collid.y -= scroll_offset
tall11.y -= scroll_offset
# ... and scroll player
playerman.y -= scroll_offset
py -= scroll_offset
如果您进行碰撞测试，那么您实际上使用了 rect 对象的 collide 属性：
platform_rect_list = [p.rect for p in collids]
但是，您之前已经更改了 x 对象的 y 和 collide 属性。因此 rect 属性不反映对象的当前位置。您必须在碰撞测试之前更新 rect 属性：
幸运的是，您已经实现了 get_rect() 方法，该方法更新并返回了 rect 属性：
class collid:
# [...]
def get_rect(self):
self.rect.topleft = (self.x,self.y)
return self.rect
调用 get_rect() 而不是直接使用 rect 属性：
platform_rect_list = [p.rect for p in collids]
platform_rect_list = [p.get_rect() for p in collids]
player_rect = playerman.get_rect()
player_rect.topleft = (px, py)
playerman.y = py
if player_rect.collidelist(platform_rect_list) < 0:
playerman.x = px