pygame small game development - Tetris

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1. Development Environment & Requirements Analysis

Development environment: python3.6.4
Third-party library: pygame1.9.6
Integrated development environment: PyCharm/Sublime Text

• Using pygame to develop Tetris games, the game interface is provided on the left, and the display interface is provided on the right, including the game score, the speed of the cube and the shape of the next cube
• Realize interactive actions such as game cube sprite rotation, docking, and elimination
• Use a two-dimensional array to realize 7 different types of game cubes, and you can change the shape of the cubes by adjusting the array parameters
• Provide grid lines to make the square sprite more intuitive and clear

2. Functional modules

game initialization

SIZE = 30  # 每个小方格大小
BLOCK_HEIGHT = 25  # 游戏区高度
BLOCK_WIDTH = 10   # 游戏区宽度
BORDER_WIDTH = 4   # 游戏区边框宽度
BORDER_COLOR = (40, 40, 200)  # 游戏区边框颜色
SCREEN_WIDTH = SIZE * (BLOCK_WIDTH + 5)  # 游戏屏幕的宽
SCREEN_HEIGHT = SIZE * BLOCK_HEIGHT      # 游戏屏幕的高
BG_COLOR = (40, 40, 60)  # 背景色
BLOCK_COLOR = (20, 128, 200)  #
BLACK = (0, 0, 0)
RED = (200, 30, 30)      # GAME OVER 的字体颜色
def main():
    pygame.init()
    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
    pygame.display.set_caption('俄罗斯方块')

block definition

# S形方块
S_BLOCK = [Block(['.OO',
                  'OO.',
                  '...'], Point(0, 0), Point(2, 1), 'S', 1),
           Block(['O..',
                  'OO.',
                  '.O.'], Point(0, 0), Point(1, 2), 'S', 0)]
# Z形方块
Z_BLOCK = [Block(['OO.',
                  '.OO',
                  '...'], Point(0, 0), Point(2, 1), 'Z', 1),
           Block(['.O.',
                  'OO.',
                  'O..'], Point(0, 0), Point(1, 2), 'Z', 0)]

Determine whether it can rotate, fall, and move

def _judge(pos_x, pos_y, block):
        nonlocal game_area
        for _i in range(block.start_pos.Y, block.end_pos.Y + 1):
            if pos_y + block.end_pos.Y >= BLOCK_HEIGHT:
                return False
            for _j in range(block.start_pos.X, block.end_pos.X + 1):
                if pos_y + _i >= 0 and block.template[_i][_j] != '.' and game_area[pos_y + _i][pos_x + _j] != '.':
                    return False
        return True

Block dock

def _dock():
        nonlocal cur_block, next_block, game_area, cur_pos_x, cur_pos_y, game_over, score, speed
        for _i in range(cur_block.start_pos.Y, cur_block.end_pos.Y + 1):
            for _j in range(cur_block.start_pos.X, cur_block.end_pos.X + 1):
                if cur_block.template[_i][_j] != '.':
                    game_area[cur_pos_y + _i][cur_pos_x + _j] = '0'
        if cur_pos_y + cur_block.start_pos.Y <= 0:
            game_over = True
        else:
            # 计算消除
            remove_idxs = []
            for _i in range(cur_block.start_pos.Y, cur_block.end_pos.Y + 1):
                if all(_x == '0' for _x in game_area[cur_pos_y + _i]):
                    remove_idxs.append(cur_pos_y + _i)

Gridlines

def _draw_gridlines(screen):
    # 画网格线 竖线
    for x in range(BLOCK_WIDTH):
        pygame.draw.line(screen, BLACK, (x * SIZE, 0), (x * SIZE, SCREEN_HEIGHT), 1)
    # 画网格线 横线
    for y in range(BLOCK_HEIGHT):
        pygame.draw.line(screen, BLACK, (0, y * SIZE), (BLOCK_WIDTH * SIZE, y * SIZE), 1)

Fraction

def _draw_info(screen, font, pos_x, font_height, score):
    print_text(screen, font, pos_x, 10, f'得分: ')
    print_text(screen, font, pos_x, 10 + font_height + 6, f'{
      
      score}')
    print_text(screen, font, pos_x, 20 + (font_height + 6) * 2, f'速度: ')
    print_text(screen, font, pos_x, 20 + (font_height + 6) * 3, f'{
      
      score // 10000}')
    print_text(screen, font, pos_x, 30 + (font_height + 6) * 4, f'下一个：')

game screen

3. Game video

Click me to watch the video , there is a surprise at the bottom!

4. Source code download

pygame game development source code download:

• Follow my original WeChat public account : " Xiaohong Xingkong Technology ", reply " Tetris " to get the source code
  
  

5. Author Info

Author: Xiaohong's Fishing Daily, Goal: Make programming more interesting!

Original WeChat public account: " Xiaohong Xingkong Technology ", focusing on algorithms, crawlers, websites, game development, data analysis, natural language processing, AI, etc., looking forward to your attention, let us grow and code together!

Copyright Note: This article prohibits plagiarism and reprinting, and infringement must be investigated!