python+pygame+pytmx+map editor开发一个tiled游戏demo 07更大的世界---摄像机
import math
import pygame
import random
# 初始化 Pygame
import pytmx
pygame.init()
# 设置屏幕和游戏世界的大小
SCREEN_WIDTH, SCREEN_HEIGHT = 800, 600
WORLD_WIDTH, WORLD_HEIGHT = 2000, 1500
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Pygame Camera Example")
# 定义颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
# 定义玩家
player = pygame.Rect(500, 400, 16, 16) # 玩家初始位置和大小
player_speed = 2
# 创建游戏对象
objects = []
for _ in range(50): # 随机生成 50 个对象
obj_x = random.randint(0, WORLD_WIDTH)
obj_y = random.randint(0, WORLD_HEIGHT)
obj_size = random.randint(10, 50)
objects.append(pygame.Rect(obj_x, obj_y, obj_size, obj_size))
# 摄像机位置
camera_x, camera_y = 0, 0
tmx_data = pytmx.load_pygame("grass2.tmx")
def draw_map():
for layer in tmx_data.visible_layers:
if isinstance(layer, pytmx.TiledTileLayer):
for x, y, gid in layer:
tile = tmx_data.get_tile_image_by_gid(gid)
if tile:
screen.blit(tile, (x * tmx_data.tilewidth - camera_x, y * tmx_data.tileheight - camera_y))
# 更新摄像机位置
def update_camera():
global camera_x, camera_y
# 让摄像机跟随玩家
camera_x = max(0, min(player.x - SCREEN_WIDTH // 2, WORLD_WIDTH - SCREEN_WIDTH))
camera_y = max(0, min(player.y - SCREEN_HEIGHT // 2, WORLD_HEIGHT - SCREEN_HEIGHT))
# 检查某个位置是否有墙体
def check_collision(x, y, dir):
# 获取该位置的瓦片 ID
dic = None
try:
x_pos = math.floor(x / tmx_data.tilewidth) + (1 if dir == 'right' else 0)
y_pos = math.floor(y / tmx_data.tileheight) + (1 if dir == 'down' else 0)
# print(x, y)
print(x_pos, y_pos)
dic = tmx_data.get_tile_properties(x_pos, y_pos, layer=0)
except Exception as e:
pass
# print(gid)
if dic:
return dic['collides'] == True
else:
return False
# 主游戏循环
clock = pygame.time.Clock()
running = True
while running:
# 处理事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
# 获取键盘输入
keys = pygame.key.get_pressed()
new_x, new_y = player.x, player.y
if keys[pygame.K_UP]:
new_y -= player_speed # 向上移动
if not check_collision(new_x, new_y, 'up'):
player.y = max(0, new_y - player_speed)
if keys[pygame.K_DOWN]:
new_y += player_speed # 向上移动
if not check_collision(new_x, new_y, 'down'):
player.y = min(WORLD_HEIGHT - player.height, new_y + player_speed)
if keys[pygame.K_LEFT]:
new_x -= player_speed # 向左移动
if not check_collision(new_x, new_y, 'left'):
player.x = max(0, new_x - player_speed)
if keys[pygame.K_RIGHT]:
new_x += player_speed # 向左移动
if not check_collision(new_x, new_y, 'right'):
player.x = min(WORLD_WIDTH - player.width, new_x + player_speed)
# 更新摄像机位置
update_camera()
# 绘制屏幕
screen.fill(WHITE)
draw_map()
# 绘制对象
for obj in objects:
screen_x = obj.x - camera_x
screen_y = obj.y - camera_y
# 只绘制在摄像机视野内的对象
if screen_x + obj.width > 0 and screen_x < SCREEN_WIDTH and screen_y + obj.height > 0 and screen_y < SCREEN_HEIGHT:
pygame.draw.rect(screen, BLACK, (screen_x, screen_y, obj.width, obj.height))
# 绘制玩家
screen_player_x = player.x - camera_x
screen_player_y = player.y - camera_y
pygame.draw.rect(screen, RED, (screen_player_x, screen_player_y, player.width, player.height))
# 显示调试信息
font = pygame.font.SysFont(None, 24)
debug_text = f"Camera: ({camera_x}, {camera_y}) | Player: ({player.x}, {player.y})"
text_surface = font.render(debug_text, True, BLACK)
screen.blit(text_surface, (10, 10))
# 更新屏幕
pygame.display.flip()
# 控制帧率
clock.tick(60)
# 退出 Pygame
pygame.quit()