Pygame 游戏开发 实战 1

Posted 2022-12-12 我是小白呀

Pygame 游戏开发 第三课 实战 1

• 动态彩色圆环
• 选择数字
• 指针时钟

动态彩色圆环

通过圆形和线的绘制, 和文字的添加, 来实现一个简单的数字选择小游戏.

代码:

import pygame
from pygame.locals import *
import sys
import random
import math


# 初始化 pygame
pygame.init()

# 设置窗口大小
screen = pygame.display.set_mode((600, 400))

# 设置字体和字号 (仿宋)
myFont = pygame.font.Font("C:\\Windows\\Fonts\\simfang.ttf", 50)

# 设置背景颜色
screen.fill((255, 205, 232))

# 设置标题
pygame.display.set_caption("动态彩色圆环")

# 捕获游戏事件
typelist = [QUIT]

# 初始化变量
pos_x = 300  # 大圆横坐标
pos_y = 200  # 大圆纵坐标
radius_big = 170  # 大圆半径
radius_small = 20  # 小圆半径
angle = 0  # 小圆初始角度

while True:
    # 获取事件
    for event in pygame.event.get():
        # 接收到退出事件, 退出程序
        if event.type == QUIT:
            sys.exit()  # 退出

    # 获取键盘按键
    keys = pygame.key.get_pressed()

    # 扫描1-9按键
    for k in range(1, 10):
        if keys[K_0 + k]:
            # 刷新背景
            screen.fill((255, 205, 232))

            # 改变小圆半径
            radius_small = 5 * k

    # 角度递增
    angle += 1

    # 随机生成颜色
    r = random.randint(0, 255)
    g = random.randint(0, 255)
    b = random.randint(0, 255)
    color = r, g, b

    # 计算小圆对于大圆的坐标
    x = radius_big * math.cos(math.radians((angle)))
    y = radius_big * math.sin(math.radians((angle)))

    # 计算小圆圆心坐标
    pos = (int(pos_x + x), int(pos_y + y))

    # 绘制小圆
    pygame.draw.circle(screen, color, pos, radius_small)

    # 更新显示
    pygame.display.update()

输出结果:

选择数字

键盘按下对应的数字 1-4, 显示对应的 1/4 圆. 当 1-4 都被点击, 变成绿色.

代码:

import pygame
from pygame.locals import *
import sys


def draw_text():
    # 创建数字
    text_img1 = myFont.render("1", True, color)
    text_img2 = myFont.render("2", True, color)
    text_img3 = myFont.render("3", True, color)
    text_img4 = myFont.render("4", True, color)
    screen.blits([(text_img1, (center[0] + 40, center[1] - 70)),
                  (text_img2, (center[0] - 60, center[1] - 70)),
                  (text_img3, (center[0] - 60, center[1] + 30)),
                  (text_img4, (center[0] + 40, center[1] + 30)), ])


# 初始化 pygame
pygame.init()

# 设置窗口大小
screen = pygame.display.set_mode((600, 400))

# 设置字体和字号 (仿宋)
myFont = pygame.font.Font("C:\\Windows\\Fonts\\simfang.ttf", 50)

# 设置背景颜色
screen.fill((255, 205, 232))

# 设置标题
pygame.display.set_caption("选择数字")

# 初始化变量
radius = 150  # 半径
center = 300, 200  # 圆心
color = 217, 184, 241  # 颜色
p1 = p2 = p3 = p4 = False  # 按键是否按下
l1 = l2 = l3 = l4 = False  # 直线是否创建
flag = False  # 是否运行完毕

# 添加文字
draw_text()

# 更新显示
pygame.display.update()

while True:
    # 获取事件
    for event in pygame.event.get():
        # 接收到退出事件, 退出程序
        if event.type == QUIT:
            sys.exit()  # 退出

        # 按键事件
        elif event.type == KEYDOWN:
            # 当 1 被按下
            if event.key == pygame.K_1:
                p1 = True

                # 画1/4圆
                pygame.draw.circle(screen, color, center, radius, width=10, draw_top_right=True)
                if not l1:
                    pygame.draw.line(screen, color, center, (center[0] + radius, center[1]), width=10)
                    l1 = True
                if not l2:
                    pygame.draw.line(screen, color, center, (center[0], center[1] - radius), width=10)
                    l2 = True

                # 更新显示
                pygame.display.update()
            # 当 2 被按下
            elif event.key == pygame.K_2:
                p2 = True

                # 画1/4圆
                pygame.draw.circle(screen, color, center, radius, width=10, draw_top_left=True)
                if not l2:
                    pygame.draw.line(screen, color, center, (center[0], center[1] - radius), width=10)
                    l2 = True
                if not l3:
                    pygame.draw.line(screen, color, center, (center[0] - radius, center[1]), width=10)
                    l3 = True

                # 更新显示
                pygame.display.update()
            # 当 3 被按下
            elif event.key == pygame.K_3:
                p3 = True

                # 画1/4圆
                pygame.draw.circle(screen, color, center, radius, width=10, draw_bottom_left=True)
                if not l3:
                    pygame.draw.line(screen, color, center, (center[0] - radius, center[1]), width=10)
                    l3 = True
                if not l4:
                    pygame.draw.line(screen, color, center, (center[0], center[1] + radius), width=10)
                    l4 = True

                # 更新显示
                pygame.display.update()
            # 当 4 被按下
            elif event.key == pygame.K_4:
                p4 = True

                # 画1/4圆
                pygame.draw.circle(screen, color, center, radius, width=10, draw_bottom_right=True)
                if not l4:
                    pygame.draw.line(screen, color, center, (center[0], center[1] + radius), width=10)
                    l4 = True
                if not l1:
                    pygame.draw.line(screen, color, center, (center[0] + radius, center[1]), width=10)
                    l1 = True

                # 更新显示
                pygame.display.update()

    # 1-4按键全部按下变绿
    if p1 and p2 and p3 and p4:

        # 判断是否已完成
        if flag:
            continue

        # 完成
        flag = True

        # 将 color 改为绿色
        color = 184, 241, 204

        # 设置文字
        draw_text()

        # 变色
        pygame.draw.circle(screen, color, center, radius, width=10, draw_top_right=True)
        pygame.draw.circle(screen, color, center, radius, width=10, draw_top_left=True)
        pygame.draw.circle(screen, color, center, radius, width=10, draw_bottom_left=True)
        pygame.draw.circle(screen, color, center, radius, width=10, draw_bottom_right=True)
        pygame.draw.line(screen, color, center, (center[0] + radius, center[1]), width=10)
        pygame.draw.line(screen, color, center, (center[0], center[1] - radius), width=10)
        pygame.draw.line(screen, color, center, (center[0] - radius, center[1]), width=10)
        pygame.draw.line(screen, color, center, (center[0], center[1] + radius), width=10)

        # 更新显示
        pygame.display.update()

输出结果:

指针时钟

实现钟表.

代码:

import pygame
from pygame.locals import *
import sys
import math
from datetime import datetime


# 初始化 pygame
pygame.init()

# 设置窗口大小
screen = pygame.display.set_mode((600, 400))

# 设置字体和字号 (仿宋)
myFont = pygame.font.Font("C:\\Windows\\Fonts\\simfang.ttf", 20)

# 设置标题
pygame.display.set_caption("指针时钟")

# 初始化变量
clock_color = 184, 241, 237  # 钟颜色
hour_color = 255, 100, 100  # 时针颜色
minute_color = 217, 184, 241  # 分针颜色
second_color = 255, 255, 0  # 秒针颜色
pos_x = 300  # 圆心横坐标
pos_y = 200  # 圆心纵坐标
radius = 180  # 半径

while True:
    # 获取事件
    for event in pygame.event.get():
        # 接收到退出事件, 退出程序
        if event.type == QUIT:
            sys.exit()  # 退出

    # 设置背景颜色
    screen.fill((255, 205, 232))

    # 绘制时钟外围
    pygame.draw.circle(screen, clock_color, (pos_x, pos_y), radius=radius, width=6)

    # 绘制表盘文字
    for i in range(1, 13):
        angle = math.radians(i * 30 - 90)
        x = math.cos(angle) * (radius - 20) - 10
        y = math.sin(angle) * (radius - 20) - 10
        text_img = myFont.render(str(i), True, (200, 255, 255))
        screen.blit(text_img, (pos_x + x, pos_y + y))

    # 获取当前时间
    today = datetime.today()
    hour = today.hour
    minute = today.minute
    second = today.second

    # 绘制时针
    hourAngle = math.radians((hour * 30 - 90) % 360)
    hour_x = math.cos(hourAngle) * (radius - 90) + pos_x
    hour_y = math.sin(hourAngle) * (radius - 90) + pos_y
    pygame.draw.line(screen, hour_color, (pos_x, pos_y), (hour_x, hour_y), width=20)

    # 绘制分针
    minuteAngle = math.radians((minute * 6 - 90) % 360)
    minute_x = math.cos(minuteAngle) * (radius - 60) + pos_x
    minute_y = math.sin(minuteAngle) * (radius - 60) + pos_y
    pygame.draw.line(screen, minute_color, (pos_x, pos_y), (minute_x, minute_y), width=12)

    # 绘制分针
    secondAngle = math.radians((second * 6 - 90) % 360)
    second_x = math.cos(secondAngle) * (radius - 60) + pos_x
    second_y = math.sin(secondAngle) * (radius - 60) + pos_y
    pygame.draw.line(screen, second_color, (pos_x, pos_y), (second_x, second_y), width=12)

    # 绘制表盘中心实心圆
    pygame.draw.circle(screen, clock_color, (pos_x, pos_y), 20)

    # 显示时间
    image_txt = myFont.render(str(hour) + ":" + str(minute) + ":" + str(second), True, (255, 255, 255))
    screen.blit(image_txt, (0, 0))

    # 更新显示
    pygame.display.update()

输出结果: