1 files changed, 139 insertions, 0 deletions
diff --git a/src/test/CollisionTest.cpp b/src/test/CollisionTest.cpp
new file mode 100644
index 0000000..a68db46
--- /dev/null
+++ b/src/test/CollisionTest.cpp
@@ -0,0 +1,139 @@
+#include <gtest/gtest.h>
+
+#define private public
+#define protected public
+
+#include <crepe/ComponentManager.h>
+#include <crepe/api/Event.h>
+#include <crepe/api/EventManager.h>
+#include <crepe/api/GameObject.h>
+#include <crepe/api/Rigidbody.h>
+#include <crepe/api/Script.h>
+#include <crepe/api/Transform.h>
+#include <crepe/system/CollisionSystem.h>
+#include <crepe/system/ScriptSystem.h>
+#include <crepe/types.h>
+#include <crepe/util/Log.h>
+
+using namespace std;
+using namespace std::chrono_literals;
+using namespace crepe;
+using namespace testing;
+
+class CollisionHandler : public Script {
+public:
+	int box_id;
+	EventManager & evmgr = EventManager::get_instance();
+	function<void(const CollisionEvent& ev)> test_fn = [](const CollisionEvent & ev) { };
+
+	CollisionHandler(int box_id) {
+		this->box_id = box_id;
+	}
+
+	bool on_collision(const CollisionEvent& ev) {
+		test_fn(ev);
+		return true;
+	}
+
+	void init() {
+		Log::logf("Box {} script init()", box_id);
+
+		// TODO: this should be built into script
+		evmgr.subscribe<CollisionEvent>([this](const CollisionEvent & ev) {
+			return this->on_collision(ev);
+		}, this->get_game_object_id());
+	}
+};
+
+class CollisionTest : public Test {
+public:
+	ComponentManager mgr;
+	CollisionSystem collision_sys{mgr};
+	ScriptSystem script_sys{mgr};
+
+	GameObject world = mgr.new_object("world");
+	GameObject game_object1 = mgr.new_object("object1", "", { 0, 0 });
+	GameObject game_object2 = mgr.new_object("object2", "", { 0, 0 });
+
+	CollisionHandler * script_object1_ref = nullptr;
+	CollisionHandler * script_object2_ref = nullptr;
+	
+	void SetUp() override {
+		world.add_component<Rigidbody>(Rigidbody::Data{
+			// TODO: remove unrelated properties:
+			.body_type = Rigidbody::BodyType::STATIC,
+			.bounce = false,
+			.offset = {0,0},
+		});
+		// Create a box with an inner size of 10x10 units
+		world.add_component<BoxCollider>(Vector2{5, 11}, 10, 2); // Top
+		world.add_component<BoxCollider>(Vector2{5, -1}, 10, 2); // Bottom
+		world.add_component<BoxCollider>(Vector2{-1, 5}, 2, 10); // Left
+		world.add_component<BoxCollider>(Vector2{11, 5}, 2, 10); // right
+
+		game_object1.add_component<Rigidbody>(Rigidbody::Data{
+			.mass = 1,
+			.gravity_scale = 0.01,
+			.body_type = Rigidbody::BodyType::DYNAMIC,
+			.linear_velocity = {1,0},
+			.constraints = {0, 0, 0},
+			.use_gravity = true,
+			.bounce = true,
+			.elastisity = 1,
+			.offset = {0,0},
+		});
+		game_object1.add_component<BoxCollider>(Vector2{0, 0}, 20, 20);
+		BehaviorScript & script_object1 = game_object1.add_component<BehaviorScript>().set_script<CollisionHandler>(1);
+		script_object1_ref = static_cast<CollisionHandler*>(script_object1.script.get());
+		ASSERT_NE(script_object1_ref, nullptr);
+		
+		game_object2.add_component<Rigidbody>(Rigidbody::Data{
+			.mass = 1,
+			.gravity_scale = 0.01,
+			.body_type = Rigidbody::BodyType::DYNAMIC,
+			.linear_velocity = {1,0},
+			.constraints = {0, 0, 0},
+			.use_gravity = true,
+			.bounce = true,
+			.elastisity = 1,
+			.offset = {0,0},
+		});
+		game_object2.add_component<BoxCollider>(Vector2{0, 0}, 20, 20);
+		BehaviorScript & script_object2 = game_object2.add_component<BehaviorScript>().set_script<CollisionHandler>(2);
+		script_object2_ref = static_cast<CollisionHandler*>(script_object2.script.get());
+		ASSERT_NE(script_object2_ref, nullptr);
+
+		// Ensure Script::init() is called on all BehaviorScript instances
+		script_sys.update();
+	}
+};
+
+TEST_F(CollisionTest, collision_example) {
+	script_object1_ref->test_fn = [](const CollisionEvent & ev) {
+		Log::logf("event x={} y={}", ev.info.move_back_value.x, ev.info.move_back_value.y);
+		EXPECT_TRUE(true);
+	};
+	collision_sys.update();
+
+	// should be nullptr after update with no collision
+	//ASSERT_EQ(MyScriptCollider1::last_collision_info_1, nullptr);
+	//ASSERT_EQ(MyScriptCollider2::last_collision_info_2, nullptr);
+	// check if values are correct (filled in data)
+	// EXPECT_EQ(MyScriptCollider1::last_collision_info->first.collider.game_object_id, 1);
+	// EXPECT_EQ(MyScriptCollider2::last_collision_info->second.collider.game_object_id, 2);
+	// check test data
+}
+
+TEST_F(CollisionTest, collision_box_box_dynamic) {
+	script_object1_ref->test_fn = [](const CollisionEvent & ev) {
+		EXPECT_TRUE(false);
+	};
+	collision_sys.update();
+	// should be nullptr after update with no collision
+	// ASSERT_NE(MyScriptCollider1::last_collision_info_1, nullptr);
+	// ASSERT_NE(MyScriptCollider2::last_collision_info_2, nullptr);
+	// // check if values are correct (filled in data)
+	// EXPECT_EQ(MyScriptCollider1::last_collision_info_1->first.collider.game_object_id, 1);
+	// EXPECT_EQ(MyScriptCollider2::last_collision_info_2->second.collider.game_object_id, 2);
+	// check test data
+}