6 files changed, 34 insertions, 1 deletions
diff --git a/asteroid.py b/asteroid.py
index c77618c..3ab16d9 100644
--- a/asteroid.py
+++ b/asteroid.py
@@ -5,7 +5,7 @@ class Asteroid(CircleShape):
         super().__init__(x, y, radius)
 
     def draw(self, screen):
-        pygame.draw.circle(screen, "white", self.position, 2)
+        pygame.draw.circle(screen, "white", self.position, self.radius, 2)
 
     def update(self, dt):
         self.position += self.velocity * dt
diff --git a/circleshape.py b/circleshape.py
index eb08882..0093b29 100644
--- a/circleshape.py
+++ b/circleshape.py
@@ -20,3 +20,6 @@ class CircleShape(pygame.sprite.Sprite):
     def update(self, dt):
         # sub-classes must override
         pass
+
+    def collision_check(self, other):
+        return self.position.distance_to(other.position) <= self.radius + other.radius
diff --git a/constants.py b/constants.py
index 020eeab..87070cd 100644
--- a/constants.py
+++ b/constants.py
@@ -9,3 +9,6 @@ ASTEROID_MAX_RADIUS = ASTEROID_MIN_RADIUS * ASTEROID_KINDS
 PLAYER_RADIUS = 20
 PLAYER_TURN_SPEED = 300
 PLAYER_SPEED = 200
+PLAYER_SHOOT_SPEED = 500
+
+SHOT_RADIUS = 5
diff --git a/main.py b/main.py
index 43645dc..6081f2a 100644
--- a/main.py
+++ b/main.py
@@ -4,6 +4,7 @@ from circleshape import *
 from player import *
 from asteroid import *
 from asteroidfield import *
+from shot import *
 
 def main():
     pygame.init()
@@ -13,6 +14,7 @@ def main():
     updatable = pygame.sprite.Group()
     drawable = pygame.sprite.Group()
     asteroids = pygame.sprite.Group()
+    shots = pygame.sprite.Group()
 
     Asteroid.containers = (asteroids, updatable, drawable)
     AsteroidField.containers = (updatable)
@@ -22,6 +24,8 @@ def main():
     Player.containers = (updatable, drawable)
     player = Player(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
 
+    Shot.containers = (shots, updatable, drawable)
+    
     dt = 0
 
     while True:
@@ -31,6 +35,10 @@ def main():
         screen.fill("black")
         for obj in updatable:
             obj.update(dt)
+        for asteroid in asteroids:
+            if asteroid.collision_check(player):
+                print("Game over!")
+                return
         for obj in drawable:
             obj.draw(screen)
         pygame.display.flip()
diff --git a/player.py b/player.py
index 339b8d1..9b7f4bc 100644
--- a/player.py
+++ b/player.py
@@ -1,6 +1,7 @@
 import pygame
 from constants import *
 from circleshape import *
+from shot import *
 
 class Player(CircleShape):
     def __init__(self, x, y):
@@ -32,8 +33,13 @@ class Player(CircleShape):
             self.move(dt)
         if keys[pygame.K_DOWN]:
             self.move(-dt)
+        if keys[pygame.K_SPACE]:
+            self.shoot(self.position)
 
     def move(self, dt):
         forward = pygame.Vector2(0, 1).rotate(self.rotation)
         self.position += forward * PLAYER_SPEED * dt
             
+    def shoot(self, position):
+        shot = Shot(position.x, position.y, SHOT_RADIUS)
+        shot.velocity = pygame.Vector2(0, 1).rotate(self.rotation) * PLAYER_SHOOT_SPEED
diff --git a/shot.py b/shot.py
new file mode 100644
index 0000000..198b48e
--- /dev/null
+++ b/shot.py
@@ -0,0 +1,13 @@
+from constants import *
+from circleshape import *
+
+class Shot(CircleShape):
+    def __init__(self, x, y, radius):
+        super().__init__(x, y, radius)
+
+    def draw(self, screen):
+        pygame.draw.circle(screen, "white", self.position, self.radius)
+
+    def update(self, dt):
+        self.position += self.velocity * dt
+