Ch17-PyGame.ipynb

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    "# PyGame\n",
    "http://openbookproject.net/thinkcs/python/english3e/pygame.html\n",
    "\n",
    "- third-party package that is used in Game development using Python\n",
    "- must install using pip - https://www.pygame.org/download.shtml\n",
    "- pip install pygame\n",
    "- see: http://openbookproject.net/thinkcs/python/english3e/pygame.html\n",
    "- see pygame folder within the repository to run the provided source codes"
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      "Requirement already satisfied: pygame in /Users/rbasnet/miniconda3/lib/python3.7/site-packages (1.9.4)\n"
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   "source": [
    "%%bash\n",
    "# install pygame\n",
    "pip install pygame"
   ]
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    "# The game loop\n",
    "\n",
    "<img src=\"http://openbookproject.net/thinkcs/python/english3e/_images/pygame_structure.png\">\n",
    "\n",
    "In every game, in the setup section we’ll create a window, load and prepare some content, and then enter the game loop. The game loop continuously does four main things:\n",
    "\n",
    "- it polls for events — i.e. asks the system whether events have occurred — and responds appropriately,\n",
    "- it updates whatever internal data structures or objects need changing,\n",
    "- it draws the current state of the game into a (non-visible) surface,\n",
    "- it puts the just-drawn surface on display."
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      "pygame 1.9.4\n",
      "Hello from the pygame community. https://www.pygame.org/contribute.html\n"
     ]
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   "source": [
    "import pygame\n",
    "\n",
    "def main():\n",
    "    \"\"\" Set up the game and run the main game loop \"\"\"\n",
    "    pygame.init()      # Prepare the pygame module for use\n",
    "    surface_sz = 480   # Desired physical surface size, in pixels.\n",
    "\n",
    "    # Create surface of (width, height), and its window.\n",
    "    main_surface = pygame.display.set_mode((surface_sz, surface_sz))\n",
    "\n",
    "    # Set up some data to describe a small rectangle and its color\n",
    "    small_rect = (300, 200, 150, 90)\n",
    "    some_color = (255, 0, 0)        # A color is a mix of (Red, Green, Blue)\n",
    "\n",
    "    while True:\n",
    "        ev = pygame.event.poll()    # Look for any event\n",
    "        if ev.type == pygame.QUIT:  # Window close button clicked?\n",
    "            break                   #   ... leave game loop\n",
    "\n",
    "        # Update your game objects and data structures here...\n",
    "\n",
    "        # We draw everything from scratch on each frame.\n",
    "        # So first fill everything with the background color\n",
    "        main_surface.fill((0, 200, 255))\n",
    "\n",
    "        # Overpaint a smaller rectangle on the main surface\n",
    "        main_surface.fill(some_color, small_rect)\n",
    "\n",
    "        # Now the surface is ready, tell pygame to display it!\n",
    "        pygame.display.flip()\n",
    "\n",
    "    pygame.quit()     # Once we leave the loop, close the window.\n",
    "\n",
    "main()"
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      "pygame 1.9.4\n",
      "Hello from the pygame community. https://www.pygame.org/contribute.html\n"
     ]
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      "/Users/rbasnet/miniconda3/lib/python3.7/site-packages/ipykernel_launcher.py:18: DeprecationWarning: time.clock has been deprecated in Python 3.3 and will be removed from Python 3.8: use time.perf_counter or time.process_time instead\n",
      "/Users/rbasnet/miniconda3/lib/python3.7/site-packages/ipykernel_launcher.py:30: DeprecationWarning: time.clock has been deprecated in Python 3.3 and will be removed from Python 3.8: use time.perf_counter or time.process_time instead\n"
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   "source": [
    "import pygame\n",
    "import time\n",
    "\n",
    "def main():\n",
    "\n",
    "    pygame.init()    # Prepare the PyGame module for use\n",
    "    main_surface = pygame.display.set_mode((480, 240))\n",
    "\n",
    "    # Load an image to draw. Substitute your own.\n",
    "    # PyGame handles gif, jpg, png, etc. image types.\n",
    "    ball = pygame.image.load(\"pygame/ball.png\")\n",
    "    ball = pygame.transform.scale(ball, [20, 20])\n",
    "    # Create a font for rendering text\n",
    "    my_font = pygame.font.SysFont(\"Courier\", 16)\n",
    "\n",
    "    frame_count = 0\n",
    "    frame_rate = 0\n",
    "    t0 = time.clock()\n",
    "\n",
    "    while True:\n",
    "\n",
    "        # Look for an event from keyboard, mouse, joystick, etc.\n",
    "        ev = pygame.event.poll()\n",
    "        if ev.type == pygame.QUIT:   # Window close button clicked?\n",
    "            break                    # Leave game loop\n",
    "\n",
    "        # Do other bits of logic for the game here\n",
    "        frame_count += 1\n",
    "        if frame_count % 500 == 0:\n",
    "            t1 = time.clock()\n",
    "            frame_rate = 500 / (t1-t0)\n",
    "            t0 = t1\n",
    "\n",
    "        # Completely redraw the surface, starting with background\n",
    "        main_surface.fill((0, 200, 255))\n",
    "\n",
    "        # Put a red rectangle somewhere on the surface\n",
    "        main_surface.fill((255,0,0), (300, 100, 150, 90))\n",
    "\n",
    "        # Copy our image to the surface, at this (x,y) posn\n",
    "        main_surface.blit(ball, (100, 120))\n",
    "\n",
    "        # Make a new surface with an image of the text\n",
    "        the_text = my_font.render(\"Frame = {0},  rate = {1:.2f} fps\"\n",
    "                  .format(frame_count, frame_rate), True, (0,0,0))\n",
    "        # Copy the text surface to the main surface\n",
    "        main_surface.blit(the_text, (10, 10))\n",
    "\n",
    "        # Now that everything is drawn, put it on display!\n",
    "        pygame.display.flip()\n",
    "\n",
    "    pygame.quit()\n",
    "\n",
    "\n",
    "main()"
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