Rectangle collision algorithm

game/test_suite/tests/__init__.py

@@ -9,6 +9,8 @@
 from game.test_suite.tests.objects.test_initialization import TestInit
 from game.test_suite.tests.objects.test_shooter import TestShooterObject
 from game.test_suite.tests.objects.test_hitbox_object import TestHitboxObject
+from game.test_suite.tests.collision_test import TestCollision
+
 
 __all__ = [
     'TestGameBoard',
@@ -17,5 +19,6 @@
     'TestShooterObject',
     'TestGrenade',
     'TestInit',
-    'TestHitboxObject'
+    'TestHitboxObject',
+    'TestCollision'
 ]

game/test_suite/tests/collision_test.py

@@ -0,0 +1,77 @@
+import unittest
+from game.common.hitbox import Hitbox
+from game.utils.collision_detection import check_collision
+
+
+class TestCollision(unittest.TestCase):
+
+    def setUp(self):
+        self.hitOne = Hitbox(10, 10, (5, 5))
+        self.hitTwo = Hitbox(25, 25, (5, 6))
+
+    # Below are 3 examples of true cases and false cases. The hit boxes were graphed out beforehand
+    # in order to determine if the test cases are behaving as expected.
+
+    def test_collision_true_one(self):
+        self.hitOne.position = (5, 5)
+        self.hitOne.height = 5
+        self.hitOne.width = 8
+
+        self.hitTwo.position = (5, 6)
+        self.hitTwo.height = 5
+        self.hitTwo.width = 8
+        self.assertTrue(check_collision(self.hitOne, self.hitTwo))
+
+    def test_collision_false_one(self):
+        self.hitOne.position = (5, 5)
+        self.hitOne.height = 5
+        self.hitOne.width = 8
+
+        self.hitTwo.position = (20, 20)
+        self.hitTwo.height = 5
+        self.hitTwo.width = 8
+        self.assertFalse(check_collision(self.hitOne, self.hitTwo))
+
+    def test_collision_true_two(self):
+        self.hitOne.position = (5, 5)
+        self.hitOne.height = 6
+        self.hitOne.width = 4
+
+        self.hitTwo.position = (1, 3)
+        self.hitTwo.height = 6
+        self.hitTwo.width = 6
+        self.assertTrue(check_collision(self.hitOne, self.hitTwo))
+
+    def test_collision_false_two(self):
+        self.hitOne.position = (5, 5)
+        self.hitOne.height = 4
+        self.hitOne.width = 4
+
+        self.hitTwo.position = (20, 20)
+        self.hitTwo.height = 6
+        self.hitTwo.width = 2
+        self.assertFalse(check_collision(self.hitOne, self.hitTwo))
+
+    def test_collision_true_three(self):
+        self.hitOne.position = (60, 50)
+        self.hitOne.height = 40
+        self.hitOne.width = 80
+
+        self.hitTwo.position = (20, 20)
+        self.hitTwo.height = 50
+        self.hitTwo.width = 60
+        self.assertTrue(check_collision(self.hitOne, self.hitTwo))
+
+    def test_collision_false_three(self):
+        self.hitOne.position = (60, 50)
+        self.hitOne.height = 40
+        self.hitOne.width = 80
+
+        self.hitTwo.position = (20, 20)
+        self.hitTwo.height = 10
+        self.hitTwo.width = 20
+        self.assertFalse(check_collision(self.hitOne, self.hitTwo))
+
+
+if __name__ == '__main__':
+    unittest.main

game/test_suite/tests/objects/test_hitbox_object.py

@@ -39,7 +39,7 @@ def test_set_get_tuple_x_boundary_high(self):
         self.assertEqual(self.hitbox.position,
                          (GameStats.game_board_width, 10))
 
-    def test_set_get_tuple_X_invalid_high(self):
+    def test_set_get_tuple_x_invalid_high(self):
         self.assertRaises(ValueError, self.setPosition,
                           (GameStats.game_board_width + 1, 10))
 

game/utils/collision_detection.py

@@ -0,0 +1,10 @@
+from game.common.hitbox import Hitbox
+from game.common.stats import GameStats
+from game.common.enums import *
+
+
+def check_collision(hitbox_one, hitbox_two):
+    return (hitbox_one.topLeft[0] < hitbox_two.topRight[0] and
+            hitbox_one.topRight[0] > hitbox_two.topLeft[0] and
+            hitbox_one.topLeft[1] < hitbox_two.bottomLeft[1] and
+            hitbox_one.bottomRight[1] > hitbox_two.topRight[1])