Python游戏开发入门3 Pygame屏幕绘制机制

目录

屏幕控制

幕控制需求

幕控制的重要函数

幕模式函数

幕设置为大小可调

幕设置为全屏

幕信息函数

小游戏(伸缩型)

屏幕控制

幕控制需求

幕控制的重要函数

幕模式函数

pygame.display.set_mode(r=(0,0), flags=0)

r是游戏屏幕的分辨率，采用(width, height)方式输入
• flags用来控制显示类型，可用|组合使用，常用显示标签如下：
† pygame.RESIZABLE 窗口大小可调
† pygame.NOFRAME 窗口没有边界显示
† pygame.FULLSCREEN 窗口全屏显示
pygame.display.set_mode(r=(0,0), flags=0)
注意：每种显示方式要配合相应的处理机制

幕设置为大小可调

幕设置为全屏

幕信息函数

import pygame, sys
import math

pygame.init()
vinfo = pygame.display.Info()

# size = width, height = 600, 400

size = width, height = vinfo.current_w, vinfo.current_h
speed = [2, 2]
BLACK = 0, 0, 0
# print(pygame.display.Info())
screen = pygame.display.set_mode(size, pygame.FULLSCREEN)
# screen = pygame.display.set_mode((600, 400), pygame.FULLSCREEN)
# screen = pygame.display.set_mode((600, 400), pygame.RESIZABLE)
# screen = pygame.display.set_mode((600, 400), pygame.NOFRAME)
# print(pygame.display.Info())

pygame.display.set_caption("Pygame for Game")
ball = pygame.image.load("PYG02-ball.gif")
ballRect = ball.get_rect()

fps = 100
fclock = pygame.time.Clock()

while True:
    for event in pygame.event.get():

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

        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT: # 如果减为零就不用减了
                speed[0] == speed[0] if speed[0] == 0 else (abs(speed[0]) - 1)*int(speed[0]/abs(speed[0]))
            elif event.key == pygame.K_RIGHT:
                speed[0] = speed[0] + 1 if speed[0] > 0 else speed[0] -1
            elif event.key == pygame.K_UP:
                speed[1] = speed[1] + 1 if speed[1] > 0 else speed[1] -1
            elif event.key == pygame.K_DOWN:# 如果减为零就不用减了
                speed[1] = speed[1] if speed[1] == 0 else (abs(speed[1]) - 1)*int(speed[1]/abs(speed[1]))
            elif event.key == pygame.K_ESCAPE:
                sys.exit()

    ballRect = ballRect.move(speed[0], speed[1])
    if ballRect.left < 0 or ballRect.right > width:
        speed[0] = -speed[0]*abs(math.cos(ballRect.left))
    if ballRect.top < 0 or ballRect.bottom > height:
        speed[1] = -speed[1]

    screen.fill(BLACK)
    screen.blit(ball, ballRect)
    pygame.display.update()
    fclock.tick(fps)

小游戏(伸缩型)

import pygame, sys
import math

pygame.init()

# size = width, height = 600, 400

size = 600, 400
speed = [2, 2]
BLACK = 0, 0, 0
# print(pygame.display.Info())
screen = pygame.display.set_mode(size, pygame.RESIZABLE)
# screen = pygame.display.set_mode((600, 400), pygame.FULLSCREEN)
# screen = pygame.display.set_mode((600, 400), pygame.RESIZABLE)
# screen = pygame.display.set_mode((600, 400), pygame.NOFRAME)
# print(pygame.display.Info())

pygame.display.set_caption("Pygame for Game")
ball = pygame.image.load("PYG02-ball.gif")
ballRect = ball.get_rect()

fps = 100
fclock = pygame.time.Clock()

while True:
    for event in pygame.event.get():

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

        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT: # 如果减为零就不用减了
                speed[0] == speed[0] if speed[0] == 0 else (abs(speed[0]) - 1)*int(speed[0]/abs(speed[0]))
            elif event.key == pygame.K_RIGHT:
                speed[0] = speed[0] + 1 if speed[0] > 0 else speed[0] -1
            elif event.key == pygame.K_UP:
                speed[1] = speed[1] + 1 if speed[1] > 0 else speed[1] -1
            elif event.key == pygame.K_DOWN:# 如果减为零就不用减了
                speed[1] = speed[1] if speed[1] == 0 else (abs(speed[1]) - 1)*int(speed[1]/abs(speed[1]))
            elif event.key == pygame.K_ESCAPE:
                sys.exit()
        elif event.type == pygame.VIDEORESIZE:
            size = width, height = event.size[0], event.size[1]
            screen = pygame.display.set_mode(size, pygame.RESIZABLE)

    ballRect = ballRect.move(speed[0], speed[1])
    if ballRect.left < 0 or ballRect.right > width:
        speed[0] = -speed[0]*abs(math.cos(ballRect.left))
    if ballRect.top < 0 or ballRect.bottom > height:
        speed[1] = -speed[1]

    screen.fill(BLACK)
    screen.blit(ball, ballRect)
    pygame.display.update()
    fclock.tick(fps)