游戏缩放图像

Question

我正在制作一个程序，它将二维数组作为二维瓷砖映射。自身瓷砖尺寸变量用于缩放将成为blit的平铺图像。 我希望Q使它变小，E使它更大。问题是，pygame窗口中的输出不是我想要的。链接中的图像显示了当我运行一个程序并试图使图像变大时发生了什么。Image of output

我的代码是：

import pygame
from pygame.locals import *
pygame.init()

import math, sys, os, random, time

from a_star import *

tiles_list = [
    pygame.image.load('Floor.png'),
    pygame.image.load('Wall.png'),
    ]

PLAN_W = 20
PLAN_H = 20

PLAN_STATUS = [[True for i in range(PLAN_W)]for j in range(PLAN_H)]

OBSTACLES = [
    [0,0],
    [0,1],
    [0,2]]

obsta(OBSTACLES, PLAN_STATUS) # function imported from a_star that change PLAN_STATUS cells from OBSTACLES to False


class World():
    def __init__(self):
        self.screen_width = 800
        self.screen_height = 600

        self.screen = pygame.display.set_mode((self.screen_width, self.screen_height))
        self.clock = pygame.time.Clock()

        self.bg_color = (255,255,255)

        self.tile_size = 48

        self.map_status = PLAN_STATUS

        self.tiles_list = tiles_list

        self.scale_change = 0

        self.run()

    def scale_tiles(self):
        print(self.tile_size)
        self.new_list = []
        for i in self.tiles_list:
            i = pygame.transform.scale(i, (self.tile_size, self.tile_size))
            self.new_list.append(i)
        self.tiles_list = self.new_list

    def render_map(self):
        print(self.tile_size)
        '''
        self.screen.fill(self.bg_color)
        for x in range(PLAN_H):
            for y in range(PLAN_W):
                if self.map_status[y][x]:
                    tile = self.tiles_list[0]
                elif not self.map_status[y][x]:
                    tile = self.tiles_list[1]

                self.screen.blit(tile, (x*self.tile_size, y*self.tile_size))
'''

        self.screen.blit(self.tiles_list[0], (400, 300))

    def run(self):
        while True:


            self.events = pygame.event.get()
            self.keys = pygame.key.get_pressed()
            self.mouse_pos = pygame.mouse.get_pos()
            self.mouse_but = pygame.mouse.get_pressed()

            #UPDATE
            self.screen.fill(self.bg_color)

            #self.scale_tiles()
            self.render_map()

            pygame.display.flip()

            #EVENTS
            if self.keys[ord('e')] == 1:
                self.tile_size += 1
                self.scale_tiles()
            if self.keys[ord('q')] == 1:
                self.tile_size -= 1
                self.scale_tiles()


            '''for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        print('q')
                        self.scale_change = -1
                    if event.key == pygame.K_e:
                        print('e')
                        self.scale_change = 1
                if event.type == pygame.KEYUP:
                    if event.key == pygame.K_q or event.key == pygame.K_e:
                        print('stopped key')
                        self.scale_change = 0'''



            self.clock.tick(50)

if __name__=="__main__":
    main = World()

我的代码哪里出问题了？ 谢谢你的帮助

Floor.png

Answer 1

使用原始全局tiles_list中的图像/曲面来创建new_list，而不是{}中已经缩放的图像，否则它似乎会随着每次缩放而增加不精确性。在

for i in tiles_list:不是{}。在