{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "d47fae7a-e60a-44e1-a2e9-1eb387915889",
   "metadata": {},
   "source": [
    "# PyGame\n",
    "\n",
    "Steer display of images on screen using keyboard. For example, to get ace of heart press `a` and `h` keys at same time. To get 5 of spades press `5` and `s`, to get 10 of clubs press `0` and `c` etc. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "f92199c3-b1f9-4cb0-8b2d-df7e13d6db9a",
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import pygame\n",
    "import glob\n",
    "import matplotlib.pyplot as plt\n",
    "#\n",
    "def get_card_name(keys):\n",
    "    '''\n",
    "    Given pygame keys (indicating which keys are depressed), return string if key combination corresponds to valid card.\n",
    "    String forms part of name of the file that is an image of the requested card.\n",
    "    '''\n",
    "    one = ''\n",
    "    two = ''\n",
    "    if keys[pygame.K_a]:\n",
    "        one = 'A'\n",
    "    elif keys[pygame.K_2]:\n",
    "        one = '2'\n",
    "    elif keys[pygame.K_3]:\n",
    "        one = '3'\n",
    "    elif keys[pygame.K_4]:\n",
    "        one = '4'\n",
    "    elif keys[pygame.K_5]:\n",
    "        one = '5'\n",
    "    elif keys[pygame.K_6]:\n",
    "        one = '6'\n",
    "    elif keys[pygame.K_7]:\n",
    "        one = '7'\n",
    "    elif keys[pygame.K_8]:\n",
    "        one = '8'\n",
    "    elif keys[pygame.K_9]:\n",
    "        one = '9'\n",
    "    elif keys[pygame.K_0]:\n",
    "        one = '10'\n",
    "    elif keys[pygame.K_j]:\n",
    "        one = 'J'\n",
    "    elif keys[pygame.K_q]:\n",
    "        one = 'Q'\n",
    "    elif keys[pygame.K_k]:\n",
    "        one = 'K'\n",
    "    #\n",
    "    if keys[pygame.K_c]:\n",
    "        two = 'C'\n",
    "    elif keys[pygame.K_d]:\n",
    "        two = 'D'\n",
    "    elif keys[pygame.K_h]:\n",
    "        two = 'H'\n",
    "    elif keys[pygame.K_s]:\n",
    "        two = 'S'\n",
    "    #\n",
    "    if len(one) > 0 and len(two) > 0:\n",
    "        card_name = one + two\n",
    "    else:\n",
    "        card_name = ''\n",
    "    #\n",
    "    return card_name\n",
    "#\n",
    "#\n",
    "# Initialise pygame\n",
    "pygame.init()\n",
    "#\n",
    "# Set window size\n",
    "size = (width, height) = (800, 800)\n",
    "screen = pygame.display.set_mode(size)\n",
    "#\n",
    "# Start clock\n",
    "clock = pygame.time.Clock()\n",
    "FPS = 60  # Frames per second\n",
    "#\n",
    "# Set required image size\n",
    "IMAGE_SIZE = (69, 106)\n",
    "#\n",
    "# Set background colour\n",
    "screen.fill((0, 0, 0))\n",
    "#\n",
    "# Image directory\n",
    "card_dir = 'Cards'\n",
    "#\n",
    "running = True\n",
    "row_start = 100\n",
    "col_start = 200\n",
    "row_step = IMAGE_SIZE[0] + 5\n",
    "col_step = 0\n",
    "#\n",
    "n_card = 0\n",
    "while running:\n",
    "    #\n",
    "    # Iterate over Event objects returned by pygame.event.get() method.\n",
    "    for evnt in pygame.event.get():\n",
    "        #\n",
    "        # if too many cards, the window was closed or escape was entered then stop the game\n",
    "        if n_card > 5:\n",
    "            running = False\n",
    "        if evnt.type == pygame.QUIT:\n",
    "            running = False\n",
    "        if evnt.type == pygame.KEYDOWN:\n",
    "            if evnt.key == pygame.K_ESCAPE:\n",
    "                running = False\n",
    "            #\n",
    "            keys = pygame.key.get_pressed()\n",
    "            #\n",
    "            # Get the name of the card (and image file) corresponding to the depressed keys\n",
    "            card_name = get_card_name(keys)\n",
    "            #\n",
    "            if len(card_name) > 0:\n",
    "                #\n",
    "                # Construct image file name\n",
    "                image_file = card_dir + '/' + card_name + '.png'\n",
    "                #\n",
    "                # Load image\n",
    "                image = pygame.image.load(image_file)\n",
    "                # \n",
    "                # Scale image to required size\n",
    "                image = pygame.transform.scale(image, IMAGE_SIZE)\n",
    "                #\n",
    "                # Set image position (coordinate origin is top left corner) \n",
    "                row = row_start + n_card*row_step\n",
    "                col = col_start + n_card*col_step\n",
    "                IMAGE_POSITION = (row, col)\n",
    "                #\n",
    "                # Put the image on the screen\n",
    "                screen.blit(image, IMAGE_POSITION)\n",
    "                #\n",
    "                # Display the screen\n",
    "                pygame.display.flip()\n",
    "                #\n",
    "                n_card += 1\n",
    "        #\n",
    "        # Control the speed of the event loop\n",
    "        clock.tick(FPS) \n",
    "    #\n",
    "pygame.quit()"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.16"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}