python - 缩放 Pygame 显示表面上的所有内容

Question

所以我在 pygame 中制作了一个 2D 像素艺术游戏，正如你所想的那样，我所有的 Sprite 纹理看起来都非常小。我想知道是否有一种方法可以全局放大游戏中的所有内容，而不必单独放大每个 Sprite 或弄乱坐标。每个 Sprite 都会在网格上移动:一个单位是 16x16 像素，例如，当我的玩家 Sprite 移动时，它只会在 16 像素的方向上移动。

这是我的主要脚本:

import sys
from pygame.locals import *
import pygame

from game.sprites import Ghost

pygame.init()

WINDOW_WIDTH = 640
WINDOW_HEIGHT = 640
DES_WIDTH = 64
DES_HEIGHT = 64

COL_BG = (46, 48, 55)
COL_FG = (235, 229, 206)

X = 1000
Y = 1000

win = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption("Through The Doors")

running = True
paused = False

# INITIALIZE SPRITES
player = Ghost()

all_sprites = pygame.sprite.Group()
all_sprites.add(player)

clock = pygame.time.Clock()

while running:
    clock.tick(30)

    if not paused:
        win.fill(COL_BG)
        all_sprites.update()
        all_sprites.draw(win)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()

    keys = pygame.key.get_pressed()

    if keys[pygame.K_RIGHT]:
        player.go_right()
    elif keys[pygame.K_LEFT]:
        player.go_left()
    elif keys[pygame.K_UP]:
        player.go_up()
    elif keys[pygame.K_DOWN]:
        player.go_down()

    pygame.display.flip()

pygame.quit()

我确实有更多 Sprite 要加载，但我想先解决缩放问题。

Answer 1

I'm wondering if there's a way I can globally scale everything up in my game without either having to scale each sprite up individually [...]"

没有办法。您必须单独缩放每个坐标、每个尺寸和每个表面。 PyGame 是为以像素为单位的图像(表面)和形状而制作的。无论如何，放大图像将导致模糊、模糊或锯齿状(Minecraft)外观。

Is there a way I could make a separate surface and just put that on top of the base window surface, and just scale that?

当然可以。

创建一个 Surface 以在其上绘制 (win)。使用 pygame.transform.scale()或 pygame.transform.smoothscale()将其缩放到窗口的大小和blit它到实际显示 Surface (display_win):

display_win = pygame.display.set_mode((WINDOW_WIDTH*2, WINDOW_HEIGHT*2))
win = pygame.Surface((WINDOW_WIDTH, WINDOW_HEIGHT))

while running:
    # [...]

    if not paused:
        win.fill(COL_BG)
        all_sprites.update()
        all_sprites.draw(win)

    # [...]

    scaled_win = pygame.transform.smoothscale(win, display_win.get_size())
    # or scaled_win = pygame.transform.scale(win, display_win.get_size())
    display_win.blit(scaled_win, (0, 0))
    pygame.display.flip()

最小示例: repl.it/@Rabbid76/PyGame-UpScaleDisplay