001 Memory Puzzle - step2 绘制图形

在游戏中, 图形使用pygame的画图功能实现, 总共有5种图形(甜甜圈, 菱形, 正方形, 线条, 和椭圆形), 有7种颜色(最多一共有70种组合)

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(1) 首先, 我们看一下图形绘制的方法, 使用的是pygame的图形绘制函数, 方法如下:

# syntax suger
quarter = int(boxsize * 0.25); half = int(boxsize * 0.5)

# 绘制甜甜圈形状
pygame.draw.circle(displaysurf, RED, (left+half, top+half), half-5)
pygame.draw.circle(displaysurf, BGCOLOR, (left+half, top+half), quarter-5)

# 绘制菱形
pygame.draw.polygon(displaysurf, GREEN, ((left + half, top),
                                                 (left + boxsize - 1, top + half),
                                                 (left + half, top + boxsize - 1),
                                                 (left, top + half)))
# 绘制正方形
pygame.draw.rect(displaysurf, YELLOW, (left + quarter, top + quarter,
                                              boxsize - half, boxsize - half))

# 绘制线条
for i in range(0, boxsize, 4):
    pygame.draw.line(displaysurf, BLUE, (left, top+i), (left + i, top))
    pygame.draw.line(displaysurf, BLUE, (left+i, top+boxsize-1),
                             (left+boxsize-1, top+i))

# 绘制椭圆形
pygame.draw.ellipse(displaysurf, PUPPLE, (left, top + quarter, boxsize, half))

(2) 然后, 我们使用这些绘制方法, 绘制所有的图形

全部代码（main.py)

# Memory Puzzle
import random, pygame, sys
from pygame.locals import *

# 配置基础 ------------------------------------------------------------
FPS = 30                    # 设置帧数为30
WINDOW_WIDTH = 640          # 窗口宽度640像素
WINDOW_HEIGHT = 480         # 窗口告诉480像素

# 游戏中需要用到的颜色设置 -----------------------------------------------
# R G B 颜色
GRAY = (100,100,100)
NAVYBLUE = (60,60,100)
WHITE = (255,255,255)
RED = (255,0,0)
GREEN = (0,255,0)
BLUE = (0,0,255)
YELLOW = (255,255,0)
ORANGE = (255,128,0)
PUPPLE = (255,0,255)
CYAN = (0,255,255)
BGCOLOR = NAVYBLUE # 背景色设置为navyblue


# 定义main函数 ---------------------------------------------------------
def main():
    pygame.init()                           # pygame初始化
    fpsclock = pygame.time.Clock()
    displaysurf = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
    pygame.display.set_caption("Memory Game")   # 设置窗口标题
    displaysurf.fill(BGCOLOR)
    while True:                                 # 游戏主题循环
        displaysurf.fill(BGCOLOR)              # 用背景色填充窗口
        for event in pygame.event.get():        # 获取游戏事件
            if event.type == QUIT:
                pygame.quit()
                sys.exit()

# 下面的代码用来展示如何绘制图形 -----------------------------------------------------------------------------
        left = 50;      # 起始的绘制位置
        top = 50;       # 距离顶部50像素，距离左侧50像素
        boxsize = 40;   # 将要绘制的图形限制在一个40*40像素的范围内
        quarter = int(boxsize * 0.25);      # syntax suger
        half = int(boxsize * 0.5)

        # 绘制圆形
        pygame.draw.circle(displaysurf, RED, (left + half, top + half), half - 5)
        pygame.draw.circle(displaysurf, BGCOLOR, (left + half, top + half), quarter - 5)

        # 右移50像素绘制菱形
        left += 50
        pygame.draw.polygon(displaysurf, GREEN, ((left + half, top),
                                                 (left + boxsize - 1, top + half),
                                                 (left + half, top + boxsize - 1),
                                                 (left, top + half)))

        # 右移50像素绘制方形
        left += 50
        pygame.draw.rect(displaysurf, YELLOW, (left + quarter, top + quarter,
                                               boxsize - half, boxsize - half))

        # 右移50像素绘制斜线方形
        left += 50
        for i in range(0, boxsize, 4):
            pygame.draw.line(displaysurf, BLUE, (left, top + i), (left + i, top))
            pygame.draw.line(displaysurf, BLUE, (left + i, top + boxsize - 1),
                             (left + boxsize - 1, top + i))

        # 右移动50像素绘制椭圆形
        left += 50
        pygame.draw.ellipse(displaysurf, PUPPLE, (left, top + quarter, boxsize, half))

# ------------------------------------------------------------------------------------------------------
        pygame.display.update()
        fpsclock.tick(FPS)


if __name__ == '__main__':
    main()

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运行程序, 结果如下:

ScreenClip [3].png

Memory Puzzle下一节：绘制一组图形