在 Python/Pygame 中构建 Tilemap 并测试鼠标位置答案

【问题标题】：Building a Tilemap in Python/Pygame and testing for mouse position在 Python/Pygame 中构建 Tilemap 并测试鼠标位置
【发布时间】：2016-01-27 23:09:30
【问题描述】：

您好，感谢您提供的任何帮助

我正在为一个可能的项目的测试创建一个平铺地图。我找到了一个教程，它有效地生成了瓦片地图。然后，如果鼠标位于块的位置，我尝试通过循环遍历每个 X 和 Y 坐标测试来实现我自己的代码。如果鼠标位于瓷砖的顶部，则会在其上绘制一个框，以创建鼠标所在位置的视觉效果。我遇到的问题是网格看起来像这样：

但鼠标检测仅在这些图块上对角线起作用：

代码如下：

    from pygame.locals import *
import pygame, sys

green = (40,255,30)
brown = (40,60,90)
red = (155,20,30)
yellow = (0,155,155)

grass = 0
dirt = 1
lava = 2

colours = {
    grass: green,
    dirt: brown,
    lava: red,
    }

tilemap = [
        [grass,dirt,dirt,dirt, lava],
        [dirt,lava,dirt,dirt, dirt],
        [lava, grass,dirt,dirt, lava],
        [lava, grass,dirt,dirt, grass],
        [dirt,dirt,dirt,dirt,grass]

        ]

TILESIZE = 50
MAPWIDTH =  5
MAPHEIGHT = 5

pygame.init()
DISPLAYSURF = pygame.display.set_mode((MAPWIDTH*TILESIZE,MAPHEIGHT*TILESIZE))

while True:


    mouse_x = pygame.mouse.get_pos()[0]
    mouse_y = pygame.mouse.get_pos()[1]


    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit
        for row in range(MAPWIDTH):
            print
            for column in range(MAPHEIGHT):
                pygame.draw.rect(DISPLAYSURF, colours[tilemap[row][column]], (column*TILESIZE, row*TILESIZE, TILESIZE, TILESIZE))
                if mouse_x >= (row * TILESIZE) and mouse_x <= (row* TILESIZE) + TILESIZE:
                    if mouse_y >= (column * TILESIZE) and mouse_y <= (column* TILESIZE) + TILESIZE:
                        print (str(row) + " " + str(column))
                        pygame.draw.rect(DISPLAYSURF, yellow, (row * TILESIZE, column*TILESIZE, TILESIZE, TILESIZE))







    pygame.display.update()

【问题讨论】：

标签： python grid pygame mouse

【解决方案1】：

首先，您没有清除屏幕。接下来你的绘图代码是错误的（如果检查是错误的）正确的是 x 代表列，y 代表行。

希望对您有所帮助！ :)

from pygame.locals import *
import pygame, sys

green = (40,255,30)
brown = (40,60,90)
red =  (155,20,30)
yellow = (0,155,155)

grass = 0
dirt = 1
lava = 2

colours = {
    grass: green,
    dirt: brown,
    lava: red,
    }

tilemap = [
        [grass,dirt,dirt,dirt, lava],
        [dirt,lava,dirt,dirt, dirt],
        [lava, grass,dirt,dirt, lava],
        [lava, grass,dirt,dirt, grass],
        [dirt,dirt,dirt,dirt,grass]

        ]

TILESIZE = 50
MAPWIDTH =  5
MAPHEIGHT = 5

pygame.init()
DISPLAYSURF = pygame.display.set_mode((MAPWIDTH*TILESIZE,MAPHEIGHT*TILESIZE))

当真时：

    mouse_x = pygame.mouse.get_pos()[0]
    mouse_y = pygame.mouse.get_pos()[1]

    print mouse_x, mouse_y

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

        DISPLAYSURF.fill((0,0,0));
        for row in range(MAPWIDTH):
            print            
            for column in range(MAPHEIGHT):
                color = colours[tilemap[row][column]];
                if mouse_x >= (column * TILESIZE) and mouse_x <= (column* TILESIZE) + TILESIZE:
                    if mouse_y >= (row * TILESIZE) and mouse_y <= (row* TILESIZE) + TILESIZE:
                        print (str(row) + " " + str(column))
                        color = yellow;                                                                                                            

                pygame.draw.rect(DISPLAYSURF, color, (column*TILESIZE, row*TILESIZE, TILESIZE, TILESIZE))


    pygame.display.update()

【讨论】：