Instruction and Game Over Screens¶

instruction_and_game_over_screens.py
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 """ This program shows how to: * Have one or more instruction screens * Show a 'Game over' text and halt the game * Allow the user to restart the game """ import arcade import random SPRITE_SCALING = 0.5 SCREEN_WIDTH = 800 SCREEN_HEIGHT = 600 # These numbers represent "states" that the game can be in. INSTRUCTIONS_PAGE_0 = 0 INSTRUCTIONS_PAGE_1 = 1 GAME_RUNNING = 2 GAME_OVER = 3 class MyAppWindow(arcade.Window): """ Main application class. """ def __init__(self, screen_width, screen_height): """ Constructor """ # Call the parent constructor. Required and must be the first line. super().__init__(screen_width, screen_height) # Set the background color arcade.set_background_color(arcade.color.AMAZON) # Start 'state' will be showing the first page of instructions. self.current_state = INSTRUCTIONS_PAGE_0 self.all_sprites_list = None self.coin_list = None # Set up the player self.score = 0 self.player_sprite = None self.instructions = [] texture = arcade.load_texture("images/instructions_0.png") self.instructions.append(texture) texture = arcade.load_texture("images/instructions_1.png") self.instructions.append(texture) def setup(self): """ Set up the game. """ # Sprite lists self.all_sprites_list = arcade.SpriteList() self.coin_list = arcade.SpriteList() # Set up the player self.score = 0 self.player_sprite = arcade.Sprite("images/character.png", SPRITE_SCALING) self.player_sprite.center_x = 50 self.player_sprite.center_y = 50 self.all_sprites_list.append(self.player_sprite) for i in range(50): # Create the coin instance coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING / 3) # Position the coin coin.center_x = random.randrange(SCREEN_WIDTH) coin.center_y = random.randrange(SCREEN_HEIGHT) # Add the coin to the lists self.all_sprites_list.append(coin) self.coin_list.append(coin) # Don't show the mouse cursor self.set_mouse_visible(False) def draw_instructions_page(self, page_number): """ Draw an instruction page. Load the page as an image. """ page_texture = self.instructions[page_number] arcade.draw_texture_rectangle(SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2, page_texture.width, page_texture.height, page_texture, 0) def draw_game(self): """ Draw all the sprites, along with the score. """ # Draw all the sprites. self.all_sprites_list.draw() # Put the text on the screen. output = "Score: {}".format(self.score) arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14) def draw_game_over(self): """ Draw "Game over" across the screen. """ output = "Game Over" arcade.draw_text(output, 240, 400, arcade.color.WHITE, 54) output = "Click to restart" arcade.draw_text(output, 310, 300, arcade.color.WHITE, 24) def on_draw(self): """ Render the screen. """ # This command has to happen before we start drawing arcade.start_render() if self.current_state == INSTRUCTIONS_PAGE_0: self.draw_instructions_page(0) elif self.current_state == INSTRUCTIONS_PAGE_1: self.draw_instructions_page(1) elif self.current_state == GAME_RUNNING: self.draw_game() else: self.draw_game() self.draw_game_over() def on_mouse_press(self, x, y, button, modifiers): """ Called when the user presses a mouse button. """ # Change states as needed. if self.current_state == INSTRUCTIONS_PAGE_0: # Next page of instructions. self.current_state = INSTRUCTIONS_PAGE_1 elif self.current_state == INSTRUCTIONS_PAGE_1: # Start the game self.setup() self.current_state = GAME_RUNNING elif self.current_state == GAME_OVER: # Restart the game. self.setup() self.current_state = GAME_RUNNING def on_mouse_motion(self, x, y, dx, dy): """ Called whenever the mouse moves. """ # Only move the user if the game is running. if self.current_state == GAME_RUNNING: self.player_sprite.center_x = x self.player_sprite.center_y = y def update(self, delta_time): """ Movement and game logic """ # Only move and do things if the game is running. if self.current_state == GAME_RUNNING: # Call update on all sprites (The sprites don't do much in this # example though.) self.all_sprites_list.update() # Generate a list of all sprites that collided with the player. hit_list = \ arcade.check_for_collision_with_list(self.player_sprite, self.coin_list) # Loop through each colliding sprite, remove it, and add to the # score. for coin in hit_list: coin.kill() self.score += 1 # If we've collected all the games, then move to a "GAME_OVER" # state. if len(self.coin_list) == 0: self.current_state = GAME_OVER self.set_mouse_visible(True) window = MyAppWindow(SCREEN_WIDTH, SCREEN_HEIGHT) arcade.run()