diff --git a/src/kekengine/cpp/common/engine.cpp b/src/kekengine/cpp/common/engine.cpp
index 22b5d1e..d1f39d9 100644
--- a/src/kekengine/cpp/common/engine.cpp
+++ b/src/kekengine/cpp/common/engine.cpp
@@ -180,6 +180,8 @@ int start() {
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		glViewport(0, 0, kekData.screenWidth, kekData.screenHeight);
 
+		Physics::step(kekData.lastFrameTime);
+
 		for(auto cb : kekData.input->periodicCallbacks) {
 			cb.second(kekData.window);
 		}
diff --git a/src/kekengine/cpp/physics/physics.cpp b/src/kekengine/cpp/physics/physics.cpp
index 172a479..149e207 100644
--- a/src/kekengine/cpp/physics/physics.cpp
+++ b/src/kekengine/cpp/physics/physics.cpp
@@ -12,12 +12,25 @@ void init() {
 	btCollisionDispatcher *dispatcher = new btCollisionDispatcher(collisionConf);
 	btBroadphaseInterface *overlappingPairCache = new btDbvtBroadphase();
 	btSequentialImpulseConstraintSolver *solver = new btSequentialImpulseConstraintSolver();
-	btDiscreteDynamicsWorld *world = new btDiscreteDynamicsWorld(dispatcher, overlappingPairCache, solver, collisionConf);
-	world->setGravity(btVector3(0, -10, 0));
+	kekData.physics->world = new btDiscreteDynamicsWorld(dispatcher, overlappingPairCache, solver, collisionConf);
+	kekData.physics->world->setGravity(btVector3(0, -10, 0));
+
+	btCollisionShape *shape = new btBoxShape(btVector3(1, 1, 1));
+	btDefaultMotionState *state = new btDefaultMotionState();
+	btRigidBody *body = new btRigidBody(1, state, shape);
+	kekData.physics->world->addRigidBody(body);
 }
 
 void destroy() {
 	delete kekData.physics;
 }
 
+void step(float deltaT) {
+	kekData.physics->world->stepSimulation(deltaT, 100);
+
+	//btRigidBody *body = btRigidBody::upcast(kekData.physics->world->getCollisionObjectArray()[0]);
+	//btTransform &t = body->getWorldTransform();
+	//btVector3 &vec = t.getOrigin();
+}
+
 }
diff --git a/src/kekengine/include/physics.h b/src/kekengine/include/physics.h
index 28178de..a4a8bf1 100644
--- a/src/kekengine/include/physics.h
+++ b/src/kekengine/include/physics.h
@@ -5,4 +5,6 @@ namespace kek::Physics {
 void init();
 void destroy();
 
+void step(float deltaT);
+
 }