Sprite Explosions Bitmapped#
sprite_explosion_bitmapped.py#
1"""
2Sprite Explosion
3
4Simple program to show how to make explosions with a series of bitmaps.
5
6Artwork from https://kenney.nl
7Explosion graphics from https://www.explosiongenerator.com/
8
9If Python and Arcade are installed, this example can be run from the command line with:
10python -m arcade.examples.sprite_explosion_bitmapped
11"""
12from __future__ import annotations
13
14import random
15import arcade
16
17SPRITE_SCALING_PLAYER = 0.5
18SPRITE_SCALING_COIN = 0.2
19SPRITE_SCALING_LASER = 0.8
20COIN_COUNT = 50
21
22SCREEN_WIDTH = 800
23SCREEN_HEIGHT = 600
24SCREEN_TITLE = "Sprite Explosion Example"
25
26BULLET_SPEED = 5
27
28EXPLOSION_TEXTURE_COUNT = 60
29
30
31class Explosion(arcade.Sprite):
32 """ This class creates an explosion animation """
33
34 def __init__(self, texture_list):
35 super().__init__(texture_list[0])
36
37 # Start at the first frame
38 self.current_texture = 0
39 self.textures = texture_list
40
41 def update(self):
42
43 # Update to the next frame of the animation. If we are at the end
44 # of our frames, then delete this sprite.
45 self.current_texture += 1
46 if self.current_texture < len(self.textures):
47 self.set_texture(self.current_texture)
48 else:
49 self.remove_from_sprite_lists()
50
51
52class MyGame(arcade.Window):
53 """ Main application class. """
54
55 def __init__(self):
56 """ Initializer """
57 # Call the parent class initializer
58 super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
59
60 # Variables that will hold sprite lists
61 self.player_list = None
62 self.coin_list = None
63 self.bullet_list = None
64 self.explosions_list = None
65
66 # Set up the player info
67 self.player_sprite = None
68 self.score = 0
69
70 # Don't show the mouse cursor
71 self.set_mouse_visible(False)
72
73 # Pre-load the animation frames. We don't do this in the __init__
74 # of the explosion sprite because it
75 # takes too long and would cause the game to pause.
76 self.explosion_texture_list = []
77
78 columns = 16
79 count = 60
80 sprite_width = 256
81 sprite_height = 256
82 file_name = ":resources:images/spritesheets/explosion.png"
83
84 # Load the explosions from a sprite sheet
85 self.explosion_texture_list = arcade.load_spritesheet(file_name, sprite_width, sprite_height, columns, count)
86
87 # Load sounds. Sounds from kenney.nl
88 self.gun_sound = arcade.sound.load_sound(":resources:sounds/laser2.wav")
89 self.hit_sound = arcade.sound.load_sound(":resources:sounds/explosion2.wav")
90
91 arcade.background_color = arcade.color.AMAZON
92
93 def setup(self):
94
95 """ Set up the game and initialize the variables. """
96
97 # Sprite lists
98 self.player_list = arcade.SpriteList()
99 self.coin_list = arcade.SpriteList()
100 self.bullet_list = arcade.SpriteList()
101 self.explosions_list = arcade.SpriteList()
102
103 # Set up the player
104 self.score = 0
105
106 # Image from kenney.nl
107 self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/femalePerson_idle.png",
108 scale=SPRITE_SCALING_PLAYER)
109 self.player_sprite.center_x = 50
110 self.player_sprite.center_y = 70
111 self.player_list.append(self.player_sprite)
112
113 # Create the coins
114 for coin_index in range(COIN_COUNT):
115
116 # Create the coin instance
117 # Coin image from kenney.nl
118 coin = arcade.Sprite(":resources:images/items/coinGold.png", scale=SPRITE_SCALING_COIN)
119
120 # Position the coin
121 coin.center_x = random.randrange(SCREEN_WIDTH)
122 coin.center_y = random.randrange(150, SCREEN_HEIGHT)
123
124 # Add the coin to the lists
125 self.coin_list.append(coin)
126
127 # Set the background color
128 self.background_color = arcade.color.AMAZON
129
130 def on_draw(self):
131 """
132 Render the screen.
133 """
134
135 # This command has to happen before we start drawing
136 self.clear()
137
138 # Draw all the sprites.
139 self.coin_list.draw()
140 self.bullet_list.draw()
141 self.player_list.draw()
142 self.explosions_list.draw()
143
144 # Render the text
145 arcade.draw_text(f"Score: {self.score}", 10, 20, arcade.color.WHITE, 14)
146
147 def on_mouse_motion(self, x, y, dx, dy):
148 """
149 Called whenever the mouse moves.
150 """
151 self.player_sprite.center_x = x
152
153 def on_mouse_press(self, x, y, button, modifiers):
154 """
155 Called whenever the mouse button is clicked.
156 """
157
158 # Gunshot sound
159 arcade.sound.play_sound(self.gun_sound)
160
161 # Create a bullet
162 bullet = arcade.Sprite(":resources:images/space_shooter/laserBlue01.png", scale=SPRITE_SCALING_LASER)
163
164 # The image points to the right, and we want it to point up. So
165 # rotate it.
166 bullet.angle = 270
167
168 # Give it a speed
169 bullet.change_y = BULLET_SPEED
170
171 # Position the bullet
172 bullet.center_x = self.player_sprite.center_x
173 bullet.bottom = self.player_sprite.top
174
175 # Add the bullet to the appropriate lists
176 self.bullet_list.append(bullet)
177
178 def on_update(self, delta_time):
179 """ Movement and game logic """
180
181 # Call update on bullet sprites
182 self.bullet_list.update()
183 self.explosions_list.update()
184
185 # Loop through each bullet
186 for bullet in self.bullet_list:
187
188 # Check this bullet to see if it hit a coin
189 hit_list = arcade.check_for_collision_with_list(bullet, self.coin_list)
190
191 # If it did...
192 if len(hit_list) > 0:
193
194 # Make an explosion
195 explosion = Explosion(self.explosion_texture_list)
196
197 # Move it to the location of the coin
198 explosion.center_x = hit_list[0].center_x
199 explosion.center_y = hit_list[0].center_y
200
201 # Call update() because it sets which image we start on
202 explosion.update()
203
204 # Add to a list of sprites that are explosions
205 self.explosions_list.append(explosion)
206
207 # Get rid of the bullet
208 bullet.remove_from_sprite_lists()
209
210 # For every coin we hit, add to the score and remove the coin
211 for coin in hit_list:
212 coin.remove_from_sprite_lists()
213 self.score += 1
214
215 # Hit Sound
216 arcade.sound.play_sound(self.hit_sound)
217
218 # If the bullet flies off-screen, remove it.
219 if bullet.bottom > SCREEN_HEIGHT:
220 bullet.remove_from_sprite_lists()
221
222
223def main():
224 window = MyGame()
225 window.setup()
226 arcade.run()
227
228
229if __name__ == "__main__":
230 main()