Aim and Shoot Bullets

sprite_bullets_aimed.py
1"""
2Sprite Bullets
3
4Simple program to show basic sprite usage.
5
6Artwork from https://kenney.nl
7
8If Python and Arcade are installed, this example can be run from the command line with:
9python -m arcade.examples.sprite_bullets_aimed
10"""
11
12import random
13import arcade
14import math
15
16SPRITE_SCALING_PLAYER = 0.6
17SPRITE_SCALING_COIN = 0.4
18SPRITE_SCALING_LASER = 0.8
19COIN_COUNT = 50
20
21WINDOW_WIDTH = 1280
22WINDOW_HEIGHT = 720
23WINDOW_TITLE = "Sprites and Bullets Aimed Example"
24
25BULLET_SPEED = 5
26
27window = None
28
29
30class GameView(arcade.View):
31 """ Main application class. """
32
33 def __init__(self):
34 """ Initializer """
35 # Call the parent class initializer
36 super().__init__()
37
38 # Variables that will hold sprite lists
39 self.player_list = None
40 self.coin_list = None
41 self.bullet_list = None
42
43 # Set up the player info
44 self.player_sprite = None
45 self.score = 0
46 self.score_text = None
47
48 # Load sounds. Sounds from kenney.nl
49 self.gun_sound = arcade.sound.load_sound(":resources:sounds/laser1.wav")
50 self.hit_sound = arcade.sound.load_sound(":resources:sounds/phaseJump1.wav")
51
52 self.background_color = arcade.color.AMAZON
53
54 def setup(self):
55
56 """ Set up the game and initialize the variables. """
57
58 # Sprite lists
59 self.player_list = arcade.SpriteList()
60 self.coin_list = arcade.SpriteList()
61 self.bullet_list = arcade.SpriteList()
62
63 # Set up the player
64 self.score = 0
65
66 # Image from kenney.nl
67 self.player_sprite = arcade.Sprite(
68 ":resources:images/animated_characters/female_person/femalePerson_idle.png",
69 scale=SPRITE_SCALING_PLAYER)
70 self.player_sprite.center_x = 50
71 self.player_sprite.center_y = 70
72 self.player_list.append(self.player_sprite)
73
74 # Create the coins
75 for i in range(COIN_COUNT):
76
77 # Create the coin instance
78 # Coin image from kenney.nl
79 coin = arcade.Sprite(
80 ":resources:images/items/coinGold.png",
81 scale=SPRITE_SCALING_COIN,
82 )
83
84 # Position the coin
85 coin.center_x = random.randrange(WINDOW_WIDTH)
86 coin.center_y = random.randrange(120, WINDOW_HEIGHT)
87
88 # Add the coin to the lists
89 self.coin_list.append(coin)
90
91 # Set the background color
92 self.background_color = arcade.color.AMAZON
93
94 def on_draw(self):
95 """ Render the screen. """
96
97 # This command has to happen before we start drawing
98 self.clear()
99
100 # Draw all the sprites.
101 self.coin_list.draw()
102 self.bullet_list.draw()
103 self.player_list.draw()
104
105 # Put the text on the screen.
106 output = f"Score: {self.score}"
107 arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
108
109 def on_mouse_press(self, x, y, button, modifiers):
110 """ Called whenever the mouse button is clicked. """
111
112 # Create a bullet
113 bullet = arcade.Sprite(
114 ":resources:images/space_shooter/laserBlue01.png",
115 scale=SPRITE_SCALING_LASER,
116 )
117
118 # Position the bullet at the player's current location
119 start_x = self.player_sprite.center_x
120 start_y = self.player_sprite.center_y
121 bullet.center_x = start_x
122 bullet.center_y = start_y
123
124 # Get from the mouse the destination location for the bullet
125 # IMPORTANT! If you have a scrolling screen, you will also need
126 # to add in self.view_bottom and self.view_left.
127 dest_x = x
128 dest_y = y
129
130 # Do math to calculate how to get the bullet to the destination.
131 # Calculation the angle in radians between the start points
132 # and end points. This is the angle the bullet will travel.
133 x_diff = dest_x - start_x
134 y_diff = dest_y - start_y
135 angle = math.atan2(y_diff, x_diff)
136
137 # Rotate the sprite clockwise to align it with its travel path
138 bullet.angle = - math.degrees(angle)
139 print(f"Bullet angle: {bullet.angle:.2f}")
140
141 # Use the angle to calculate the velocity's change_x and
142 # change_y from speed. Speed is a directionless value, but
143 # the idea of velocity also includes direction.
144 bullet.change_x = math.cos(angle) * BULLET_SPEED
145 bullet.change_y = math.sin(angle) * BULLET_SPEED
146
147 # Add the bullet to the appropriate lists
148 self.bullet_list.append(bullet)
149
150 def on_update(self, delta_time):
151 """ Movement and game logic """
152
153 # Call update on all sprites
154 self.bullet_list.update()
155
156 # Loop through each bullet
157 for bullet in self.bullet_list:
158
159 # Check this bullet to see if it hit a coin
160 hit_list = arcade.check_for_collision_with_list(bullet, self.coin_list)
161
162 # If it did, get rid of the bullet
163 if len(hit_list) > 0:
164 bullet.remove_from_sprite_lists()
165
166 # For every coin we hit, add to the score and remove the coin
167 for coin in hit_list:
168 coin.remove_from_sprite_lists()
169 self.score += 1
170
171 # If the bullet flies off-screen, remove it.
172 if (bullet.bottom > self.width or
173 bullet.top < 0 or
174 bullet.right < 0 or
175 bullet.left > self.width
176 ):
177 bullet.remove_from_sprite_lists()
178
179
180def main():
181 """ Main function """
182 # Create a window class. This is what actually shows up on screen
183 window = arcade.Window(WINDOW_WIDTH, WINDOW_HEIGHT, WINDOW_TITLE)
184
185 # Create and setup the GameView
186 game = GameView()
187 game.setup()
188
189 # Show GameView on screen
190 window.show_view(game)
191
192 # Start the arcade game loop
193 arcade.run()
194
195
196if __name__ == "__main__":
197 main()