# HG changeset patch
# User Thibaut Girka <thib@sitedethib.com>
# Date 1316976974 -7200
# Node ID c7f0fd9d2145d4999489ec7cdb1304293a97d742
# Parent  982b212226028fe00a6a4e2a2f159c98a022e4c3
Simple collision detection

diff --git a/pytouhou/game/bullet.py b/pytouhou/game/bullet.py
--- a/pytouhou/game/bullet.py
+++ b/pytouhou/game/bullet.py
@@ -29,6 +29,8 @@ class Bullet(object):
         self._launched = False
         self._bullet_type = bullet_type
 
+        self.hitbox_half_size = bullet_type.hitbox_size / 2.
+
         self.speed_interpolator = None
         self.frame = 0
         self.grazed = False
diff --git a/pytouhou/game/game.py b/pytouhou/game/game.py
--- a/pytouhou/game/game.py
+++ b/pytouhou/game/game.py
@@ -75,8 +75,9 @@ class Game(object):
         self.enemies = [enemy for enemy in self.enemies if not enemy._removed]
 
         # 3. Let's play!
+        #TODO: check update orders
         for player in self.players:
-            player.update(keystate) #TODO: differentiate keystates
+            player.update(keystate) #TODO: differentiate keystates (multiplayer mode)
             if player.state.x < 8.:
                 player.state.x = 8.
             if player.state.x > 384.-8: #TODO
@@ -92,7 +93,24 @@ class Game(object):
         for bullet in self.game_state.bullets:
             bullet.update()
 
-        # 4. Cleaning
+        # 4. Check for collisions!
+        #TODO
+        for player in self.players:
+            px, py = player.x, player.y
+            phalf_size = player.hitbox_half_size
+            px1, px2 = px - phalf_size, px + phalf_size
+            py1, py2 = py - phalf_size, py + phalf_size
+            for bullet in self.game_state.bullets:
+                half_size = bullet.hitbox_half_size
+                bx, by = bullet.x, bullet.y
+                bx1, bx2 = bx - half_size, bx + half_size
+                by1, by2 = by - half_size, by + half_size
+
+                if not (bx2 < px1 or bx1 > px2
+                        or by2 < py1 or by1 > py2):
+                    print('collided!') #TODO
+
+        # 5. Cleaning
         self.cleanup()
 
         self.game_state.frame += 1
diff --git a/pytouhou/game/player.py b/pytouhou/game/player.py
--- a/pytouhou/game/player.py
+++ b/pytouhou/game/player.py
@@ -43,6 +43,8 @@ class Player(object):
         self._sprite = None
         self._anmrunner = None
 
+        self.hitbox_half_size = character.hitbox_size / 2.
+
         self.state = state
         self.character = character
         self.anm_wrapper = character.anm_wrapper