当我跳进我正在制作的游戏时，跳跃高度因计算机和地图而异，甚至认为我正在使用帧速率上限。例如，当我在计算机上运行游戏时，我可以跳过两个高的瓷砖但是当我在另一台计算机上运行时，我只能跳到一个高的瓷砖。
我限制帧率的方法是使用自调用pygame.init（）以来当前毫秒数的deltaTime以及自调用pygame.init（）以来最后一次循环迭代的毫秒数。
以下是我设置deltaTime的方法（这是在游戏循环的开头）：
prevTime = curTime;
curTime = pygame.time.get_ticks();
if ((curTime - prevTime) / 1000.0) <= 0.0:
deltaTime = -((curTime - prevTime) / 1000.0);
else:
deltaTime = ((curTime - prevTime) / 1000.0);
这是玩家类：
import pygame;
import Globals;
import Object;
import Tile;
import MAP_HANDLER;
class Obj_Player(Object.Obj_Base):
#0 - FRAME_RIGHT_IDLE
#1 - FRAME_RIGHT_WALK_1
#2 - FRAME_RIGHT_WALK_2
#3 - FRAME_RIGHT_IDLE
#4 - FRAME_RIGHT_WALK_1
#5 - FRAME_RIGHT_WALK_2
Frame = 0;
frameTime = 0.0;
isRightFoot = True;
#0 - LEFT
#1 - RIGHT
lastMoveKeyPress = 0;
def __init__(self, x, y):
self.x = x;
self.y = y;
self.speed = 300;
self.Surface = pygame.image.load("Sprites/PLAYER_SPRITES.png");
self.OBJ_TYPE = 1;
self.Gravity = 10.0;
self.collisionTop = (0, 0, 0, 0);
self.collisionBottom = (0, 0, 0, 0);
self.collisionRight = (0, 0, 0, 0);
self.collisionLeft = (0, 0, 0, 0);
def Update(self, deltaTime, cameraX):
key = pygame.key.get_pressed();
self.cameraX = cameraX;
if key[pygame.K_RIGHT]:
self.lastMoveKeyPress = 1;
self.velX = self.speed;
self.frameTime += deltaTime;
if self.frameTime >= 0.25:
if self.isRightFoot == True:
if self.Frame == 1:
self.Frame = 0;
self.isRightFoot = False;
else:
self.Frame = 1;
elif self.isRightFoot == False:
if self.Frame == 2:
self.Frame = 0;
self.isRightFoot = True;
else:
self.Frame = 2;
self.frameTime = 0.0;
elif key[pygame.K_LEFT]:
self.lastMoveKeyPress = 0;
self.velX = -self.speed;
self.frameTime += deltaTime;
if self.frameTime >= 0.25:
if self.isRightFoot == True:
if self.Frame == 4:
self.Frame = 3;
self.isRightFoot = False;
else:
self.Frame = 4;
elif self.isRightFoot == False:
if self.Frame == 5:
self.Frame = 3;
self.isRightFoot = True;
else:
self.Frame = 5;
self.frameTime = 0.0;
else:
if self.lastMoveKeyPress == 0:
self.Frame = 3;
else:
self.Frame = 0;
self.velX = 0.0;
self.frameTime = 0.25;
if self.x <= 0.0:
self.x = 0.0;
if self.x >= Globals.WINDOW_WIDTH - self.w:
self.x = Globals.WINDOW_WIDTH - self.w;
if self.y <= 0.0:
self.y = 0.0;
for i in range(MAP_HANDLER.getTileArraySize()):
if self.collisionTop[0] < int(MAP_HANDLER.getTileArray(i).getX() - cameraX) + MAP_HANDLER.getTileArray(i).getW() and self.collisionTop[0] + self.collisionTop[2] > int(MAP_HANDLER.getTileArray(i).getX() - cameraX) and self.collisionTop[1] < int(MAP_HANDLER.getTileArray(i).getY()) + MAP_HANDLER.getTileArray(i).getH() and self.collisionTop[1] + self.collisionTop[3] > int(MAP_HANDLER.getTileArray(i).getY()):
if MAP_HANDLER.getTileArray(i).getTileType() != '0':
self.y = MAP_HANDLER.getTileArray(i).getY() + 64;
self.velY = 0.0;
if self.collisionRight[0] < int(MAP_HANDLER.getTileArray(i).getX() - cameraX) + MAP_HANDLER.getTileArray(i).getW() and self.collisionRight[0] + self.collisionRight[2] > int(MAP_HANDLER.getTileArray(i).getX() - cameraX) and self.collisionRight[1] < int(MAP_HANDLER.getTileArray(i).getY()) + MAP_HANDLER.getTileArray(i).getH() and self.collisionRight[1] + self.collisionRight[3] > int(MAP_HANDLER.getTileArray(i).getY()):
if MAP_HANDLER.getTileArray(i).getTileType() != '0':
self.velX = 0.0;
self.cameraX -= 1;
if self.collisionLeft[0] < int(MAP_HANDLER.getTileArray(i).getX() - cameraX) + MAP_HANDLER.getTileArray(i).getW() and self.collisionLeft[0] + self.collisionLeft[2] > int(MAP_HANDLER.getTileArray(i).getX() - cameraX) and self.collisionLeft[1] < int(MAP_HANDLER.getTileArray(i).getY()) + MAP_HANDLER.getTileArray(i).getH() and self.collisionLeft[1] + self.collisionLeft[3] > int(MAP_HANDLER.getTileArray(i).getY()):
if MAP_HANDLER.getTileArray(i).getTileType() != '0':
self.velX = 0.0;
self.cameraX += 1;
if self.collisionBottom[0] < int(MAP_HANDLER.getTileArray(i).getX() - cameraX) + MAP_HANDLER.getTileArray(i).getW() and self.collisionBottom[0] + self.collisionBottom[2] > int(MAP_HANDLER.getTileArray(i).getX() - cameraX) and self.collisionBottom[1] < int(MAP_HANDLER.getTileArray(i).getY()) + MAP_HANDLER.getTileArray(i).getH() and self.collisionBottom[1] + self.collisionBottom[3] > int(MAP_HANDLER.getTileArray(i).getY()):
if MAP_HANDLER.getTileArray(i).getTileType() != '0':
self.velY = 0.0;
self.y = MAP_HANDLER.getTileArray(i).getY() - self.h;
self.falling = False;
self.jumping = False;
if key[pygame.K_UP] and self.jumping != True:
self.jumping = True;
self.velY = -400.0;
else:
self.falling = True;
if self.falling == True or self.jumping == True:
if self.velY < 500.0:
self.velY += self.Gravity;
#self.x += self.velX * deltaTime;
self.cameraX += self.velX * deltaTime;
self.y += self.velY * deltaTime;
if self.Frame == 0:
self.imgX = 0;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
elif self.Frame == 1:
self.imgX = 16;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
elif self.Frame == 2:
self.imgX = 31;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
elif self.Frame == 3:
self.imgX = 79;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
elif self.Frame == 4:
self.imgX = 49;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
elif self.Frame == 5:
self.imgX = 64;
self.imgY = 0;
self.imgW = 16;
self.imgH = 32;
else:
self.Frame = 0;
self.w = 64;
self.h = 128;
self.collisionTop = (self.x + 15, self.y, self.w - 30, 5);
self.collisionBottom = (self.x + 15, self.y + self.h - 5, self.w - 30, 5);
self.collisionLeft = (self.x, self.y + 5, 5, self.h - 10);
self.collisionRight = (self.x + self.w - 5, self.y + 5, 5, self.h - 10);
def Draw(self, window):
if self.x >= 0 - self.w and self.x <= Globals.WINDOW_WIDTH and self.y >= 0 - self.h and self.y <= Globals.WINDOW_HEIGHT:
crop = pygame.Surface((self.imgW, self.imgH));
crop.blit(self.Surface, (0, 0), (self.imgX, self.imgY, self.imgW, self.imgH));
crop = pygame.transform.scale(crop, (self.w, self.h));
crop.set_colorkey((48, 4, 0));
window.blit(crop, (self.x, int(self.y)));