seyon2.md

Hello, Future Game Maker!

Goal: Learn to make a Pygame window and take basic player input.

Plan:

• Methods: import pygame, pygame.init(), pygame.display.set_mode, pygame.display.set_caption, game loop, pygame.event.get(), event.type == pygame.QUIT, pygame.key.get_pressed(), pygame.K_SPACE, screen.fill, pygame.display.flip().
• Stretch: Dynamic window title.

Teach each Method:

• import pygame
  • import pygame
  • Opens a game toolbox.
  • Pygame functions are ready.
  • Starts building your game.
• pygame.init()
  • pygame.init()
  • Wakes Pygame up.
  • Game system is ready.
  • Prepares your game setup.
• pygame.display.set_mode((width, height))
  • screen = pygame.display.set_mode((600, 400))
  • Draws your screen size.
  • A black window appears.
  • This is your game's main view.
• pygame.display.set_caption('Your Game Title')
  • pygame.display.set_caption('My Game')
  • Names your window.
  • "My Game" shows at the top.
  • Sets your game's title.
• game loop (while running:)
  • running = True\nwhile running:
  • Game repeats actions fast.
  • Game runs constantly.
  • Keeps your game active.
• pygame.event.get()
  • for event in pygame.event.get():
  • Listens for player actions.
  • Gets player's clicks or keys.
  • Allows player interaction.
• event.type == pygame.QUIT
  • if event.type == pygame.QUIT: running = False
  • Checks for 'X' button click.
  • The game window closes.
  • Lets players exit the game.
• pygame.key.get_pressed()
  • keys = pygame.key.get_pressed()
  • Checks for held keys.
  • Finds which keyboard keys are down.
  • Good for continuous player movement.
• pygame.K_SPACE
  • if keys[pygame.K_SPACE]: print("Jump!")
  • This means the Spacebar key.
  • An action happens (like jump).
  • Assigns a key for player action.
• screen.fill((R, G, B))
  • screen.fill((255, 0, 0))
  • Paints your screen.
  • Background turns red.
  • Sets the main scene color.
• pygame.display.flip() / .update()
  • pygame.display.flip()
  • Shows new drawings.
  • Changes appear on screen.
  • Updates the game view for players.

Stretch — Dynamically changing the window title based on game state

• pygame.display.set_caption(f'Score: {score}')
• Changes the window title live.
• The title shows game state (e.g., score).

Your turn:

• Make a file: my_game.py.
• 1. Window! Add this code:

  import pygame
  pygame.init()
  screen = pygame.display.set_mode((600, 400))
  pygame.display.set_caption('My First Game')

  Run it! You'll see a black window flash for a second.
• 2. Keep it! Add this code after the last part. Replace any pygame.quit() you might have.

  running = True
  while running:
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              running = False
      screen.fill((0, 150, 250)) # Blue background
      pygame.display.flip()
  pygame.quit()

  Run it! A blue window stays until you click 'X'.
• 3. Spacebar! Before running = True, add score = 0. Inside the while running: loop (before screen.fill), add this code:

  keys = pygame.key.get_pressed()
  if keys[pygame.K_SPACE]:
      score += 1
      pygame.display.set_caption(f'My First Game - Score: {score}')

  Run it! Press Spacebar. Watch the score in the title go up!

Final question: What does pygame.init() do?