164 lines
5.0 KiB
Python
164 lines
5.0 KiB
Python
"""
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No coins on the walls
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Simple program to show basic sprite usage. Specifically, create coin sprites that
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aren't on top of any walls, and don't have coins on top of each other.
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Artwork from http://kenney.nl
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If Python and Arcade are installed, this example can be run from the command line with:
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python -m arcade.examples.sprite_no_coins_on_walls
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"""
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import arcade
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import random
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import os
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SPRITE_SCALING = 0.5
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SPRITE_SCALING_COIN = 0.2
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SCREEN_WIDTH = 800
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SCREEN_HEIGHT = 600
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SCREEN_TITLE = "Sprite No Coins on Walls Example"
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NUMBER_OF_COINS = 50
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MOVEMENT_SPEED = 5
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class MyGame(arcade.Window):
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""" Main application class. """
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def __init__(self, width, height, title):
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"""
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Initializer
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"""
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super().__init__(width, height, title)
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# Set the working directory (where we expect to find files) to the same
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# directory this .py file is in. You can leave this out of your own
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# code, but it is needed to easily run the examples using "python -m"
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# as mentioned at the top of this program.
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file_path = os.path.dirname(os.path.abspath(__file__))
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os.chdir(file_path)
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# Sprite lists
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self.all_sprites_list = None
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self.coin_list = None
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# Set up the player
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self.player_sprite = None
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self.wall_list = None
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self.physics_engine = None
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def setup(self):
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""" Set up the game and initialize the variables. """
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# Sprite lists
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self.all_sprites_list = arcade.SpriteList()
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self.wall_list = arcade.SpriteList()
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self.coin_list = arcade.SpriteList()
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# Set up the player
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self.player_sprite = arcade.Sprite("images/character.png", SPRITE_SCALING)
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self.player_sprite.center_x = 50
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self.player_sprite.center_y = 64
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# -- Set up the walls
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# Create a series of horizontal walls
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for y in range(0, 800, 200):
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for x in range(100, 700, 64):
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wall = arcade.Sprite("images/boxCrate_double.png", SPRITE_SCALING)
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wall.center_x = x
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wall.center_y = y
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self.wall_list.append(wall)
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# -- Randomly place coins where there are no walls
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# Create the coins
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for i in range(NUMBER_OF_COINS):
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# Create the coin instance
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# Coin image from kenney.nl
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coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING_COIN)
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# --- IMPORTANT PART ---
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# Boolean variable if we successfully placed the coin
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coin_placed_successfully = False
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# Keep trying until success
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while not coin_placed_successfully:
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# Position the coin
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coin.center_x = random.randrange(SCREEN_WIDTH)
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coin.center_y = random.randrange(SCREEN_HEIGHT)
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# See if the coin is hitting a wall
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wall_hit_list = arcade.check_for_collision_with_list(coin, self.wall_list)
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# See if the coin is hitting another coin
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coin_hit_list = arcade.check_for_collision_with_list(coin, self.coin_list)
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if len(wall_hit_list) == 0 and len(coin_hit_list) == 0:
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# It is!
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coin_placed_successfully = True
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# Add the coin to the lists
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self.coin_list.append(coin)
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# --- END OF IMPORTANT PART ---
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self.physics_engine = arcade.PhysicsEngineSimple(self.player_sprite, self.wall_list)
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# Set the background color
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arcade.set_background_color(arcade.color.AMAZON)
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def on_draw(self):
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"""
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Render the screen.
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"""
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# This command has to happen before we start drawing
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arcade.start_render()
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# Draw all the sprites.
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self.wall_list.draw()
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self.coin_list.draw()
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self.player_sprite.draw()
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def on_key_press(self, key, modifiers):
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"""Called whenever a key is pressed. """
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if key == arcade.key.UP:
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self.player_sprite.change_y = MOVEMENT_SPEED
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elif key == arcade.key.DOWN:
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self.player_sprite.change_y = -MOVEMENT_SPEED
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elif key == arcade.key.LEFT:
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self.player_sprite.change_x = -MOVEMENT_SPEED
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elif key == arcade.key.RIGHT:
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self.player_sprite.change_x = MOVEMENT_SPEED
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def on_key_release(self, key, modifiers):
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"""Called when the user releases a key. """
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if key == arcade.key.UP or key == arcade.key.DOWN:
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self.player_sprite.change_y = 0
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elif key == arcade.key.LEFT or key == arcade.key.RIGHT:
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self.player_sprite.change_x = 0
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def update(self, delta_time):
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""" Movement and game logic """
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# Call update on all sprites (The sprites don't do much in this
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# example though.)
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self.physics_engine.update()
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def main():
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""" Main method """
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window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
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window.setup()
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arcade.run()
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if __name__ == "__main__":
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main()
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