Lec 1: Introductions, Games, Architecture, Engine⚓︎

Introduction⚓︎

游戏的分类：

按平台分类：PC、控制台、浏览器、移动端、VR、AR
按目的分类：严肃的、教育意义的、随意的
按设备分类：触摸屏、动作捕捉、舞蹈垫

Pygame⚓︎

本课程采用 Pygame 来开发游戏。正如它的字面意思所示，我们会用 Python 语言来编写代码，所以也可以将 Pygame 简单理解为 Python 的一个（开源的）库。Pygame 具备以下特点：

建立在 SDL 之上
可以进行低级访问，即可以访问帧缓存 (framebuffer)、音频设备、鼠标、键盘和手柄等设备
对大多数平台而言是便携的

Pygame 下有多个模块 (modules)，用于控制游戏环境的各方面，包括：

Pygame 安装：

# Install using pip
$ pip3 install pygame
# Check Installation
$ python3 -m pygame.examples.aliens

例子

#! /usr/bin/env python3
''' A simple pygame intro example '''
import pygame
from pathlib import Path

pygame.init()

size = width, height = 1024, 768
speed = [3,2]
black = (0, 0, 0)

screen = pygame.display.set_mode(size)        # screen is a "surface" object  
logo = pygame.image.load(logo_file)           # so is logo
logo_width, logo_height = logo.get_size()     # surface methods let you get the size(width, height)
logo_x = logo_y = 0

running = True
clock = pygame.time.Clock()
while running:
    clock.tick(30)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:         # check if the user closed the window
            running = False

    # move the logo position
    logo_x += speed[0]
    logo_y += speed[1]

    # check if going off screen
    if logo_x < 0 or logo_x + logo_width > width:
        speed[0] = -speed[0]
    if logo_y < 0 or logo_y + logo_height > height:
        speed[1] = -speed[1]

    screen.fill(black)                        # draw all black
    # now copy/paste in the logo at its (x, y) location
    screen.blit(logo, (logo_x, logo_y))
    pygame.display.flip()

运行该程序，结果是一个 Pygame 的 Logo 在黑色画布上弹跳，~~类似 Windows XP 的屏保~~。

Lec 1: Introductions, Games, Architecture, Engine⚓︎

Introduction⚓︎

Pygame⚓︎

Game Loop⚓︎

Frame⚓︎

Event Queue⚓︎

Game Architecture⚓︎