227 lines
6.7 KiB
Python
227 lines
6.7 KiB
Python
"""
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Sprite Explosion
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Simple program to show basic sprite usage.
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Artwork from http://kenney.nl
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Explosion graphics from http://www.explosiongenerator.com/
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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_explosion
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"""
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import random
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import arcade
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import os
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SPRITE_SCALING_PLAYER = 0.5
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SPRITE_SCALING_COIN = 0.2
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SPRITE_SCALING_LASER = 0.8
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COIN_COUNT = 50
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SCREEN_WIDTH = 800
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SCREEN_HEIGHT = 600
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SCREEN_TITLE = "Sprite Explosion Example"
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BULLET_SPEED = 5
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EXPLOSION_TEXTURE_COUNT = 60
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class Explosion(arcade.Sprite):
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""" This class creates an explosion animation """
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# Static variable that holds all the explosion textures
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explosion_textures = []
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def __init__(self, texture_list):
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super().__init__("images/explosion/explosion0000.png")
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# Start at the first frame
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self.current_texture = 0
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self.textures = texture_list
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def update(self):
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# Update to the next frame of the animation. If we are at the end
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# of our frames, then delete this sprite.
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self.current_texture += 1
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if self.current_texture < len(self.textures):
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self.set_texture(self.current_texture)
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else:
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self.kill()
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class MyGame(arcade.Window):
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""" Main application class. """
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def __init__(self):
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""" Initializer """
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# Call the parent class initializer
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super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_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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# Variables that will hold sprite lists
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self.player_list = None
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self.coin_list = None
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self.bullet_list = None
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self.explosions_list = None
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# Set up the player info
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self.player_sprite = None
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self.score = 0
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# Don't show the mouse cursor
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self.set_mouse_visible(False)
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# Pre-load the animation frames. We don't do this in the __init__
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# of the explosion sprite because it
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# takes too long and would cause the game to pause.
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self.explosion_texture_list = []
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for i in range(EXPLOSION_TEXTURE_COUNT):
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# Files from http://www.explosiongenerator.com are numbered sequentially.
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# This code loads all of the explosion0000.png to explosion0270.png files
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# that are part of this explosion.
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texture_name = f"images/explosion/explosion{i:04d}.png"
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self.explosion_texture_list.append(arcade.load_texture(texture_name))
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# Load sounds. Sounds from kenney.nl
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self.gun_sound = arcade.sound.load_sound("sounds/laser1.wav")
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self.hit_sound = arcade.sound.load_sound("sounds/phaseJump1.wav")
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arcade.set_background_color(arcade.color.AMAZON)
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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.player_list = arcade.SpriteList()
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self.coin_list = arcade.SpriteList()
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self.bullet_list = arcade.SpriteList()
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self.explosions_list = arcade.SpriteList()
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# Set up the player
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self.score = 0
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# Image from kenney.nl
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self.player_sprite = arcade.Sprite("images/character.png", SPRITE_SCALING_PLAYER)
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self.player_sprite.center_x = 50
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self.player_sprite.center_y = 70
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self.player_list.append(self.player_sprite)
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# Create the coins
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for coin_index in range(COIN_COUNT):
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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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# Position the coin
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coin.center_x = random.randrange(SCREEN_WIDTH)
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coin.center_y = random.randrange(150, SCREEN_HEIGHT)
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# Add the coin to the lists
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self.coin_list.append(coin)
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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.coin_list.draw()
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self.bullet_list.draw()
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self.player_list.draw()
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self.explosions_list.draw()
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# Render the text
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arcade.draw_text(f"Score: {self.score}", 10, 20, arcade.color.WHITE, 14)
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def on_mouse_motion(self, x, y, dx, dy):
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"""
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Called whenever the mouse moves.
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"""
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self.player_sprite.center_x = x
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def on_mouse_press(self, x, y, button, modifiers):
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"""
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Called whenever the mouse button is clicked.
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"""
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# Gunshot sound
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arcade.sound.play_sound(self.gun_sound)
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# Create a bullet
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bullet = arcade.Sprite("images/laserBlue01.png", SPRITE_SCALING_LASER)
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# The image points to the right, and we want it to point up. So
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# rotate it.
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bullet.angle = 90
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# Give it a speed
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bullet.change_y = BULLET_SPEED
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# Position the bullet
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bullet.center_x = self.player_sprite.center_x
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bullet.bottom = self.player_sprite.top
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# Add the bullet to the appropriate lists
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self.bullet_list.append(bullet)
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def update(self, delta_time):
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""" Movement and game logic """
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# Call update on bullet sprites
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self.bullet_list.update()
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self.explosions_list.update()
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# Loop through each bullet
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for bullet in self.bullet_list:
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# Check this bullet to see if it hit a coin
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hit_list = arcade.check_for_collision_with_list(bullet, self.coin_list)
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# If it did, get rid of the bullet
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if len(hit_list) > 0:
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explosion = Explosion(self.explosion_texture_list)
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explosion.center_x = hit_list[0].center_x
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explosion.center_y = hit_list[0].center_y
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self.explosions_list.append(explosion)
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bullet.kill()
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# For every coin we hit, add to the score and remove the coin
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for coin in hit_list:
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coin.kill()
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self.score += 1
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# Hit Sound
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arcade.sound.play_sound(self.hit_sound)
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# If the bullet flies off-screen, remove it.
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if bullet.bottom > SCREEN_HEIGHT:
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bullet.kill()
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def main():
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window = MyGame()
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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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