BGE: Adding a maxJumps to the character controller to adjust how many jumps a character can perform before having to touch the ground. By default this is set to 1, which means a character can only jump once before having to touch the ground again. Setting this to 2 allows for double jumping.

3 files changed, 77 insertions, 23 deletions

diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsController.cpp b/source/gameengine/Physics/Bullet/CcdPhysicsController.cpp
index a1b30ccb001..5a6e90cddd5 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsController.cpp
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsController.cpp
@@ -68,6 +68,48 @@ float gAngularSleepingTreshold;
 
 btVector3 startVel(0,0,0);//-10000);
 
+BlenderBulletCharacterController::BlenderBulletCharacterController(btMotionState *motionState, btPairCachingGhostObject *ghost, btConvexShape* shape, float stepHeight)
+	: btKinematicCharacterController(ghost,shape,stepHeight,2),
+		m_motionState(motionState),
+		m_jumps(0),
+		m_maxJumps(1)
+{
+}
+
+void BlenderBulletCharacterController::updateAction(btCollisionWorld *collisionWorld, btScalar dt)
+{
+	btKinematicCharacterController::updateAction(collisionWorld,dt);
+	m_motionState->setWorldTransform(getGhostObject()->getWorldTransform());
+}
+
+int BlenderBulletCharacterController::getMaxJumps() const
+{
+	return m_maxJumps;
+}
+
+void BlenderBulletCharacterController::setMaxJumps(int maxJumps)
+{
+	m_maxJumps = maxJumps;
+}
+
+bool BlenderBulletCharacterController::canJump() const
+{
+	return onGround() || m_jumps < m_maxJumps;
+}
+
+void BlenderBulletCharacterController::jump()
+{
+	if (onGround())
+		m_jumps = 0;
+
+	if (!canJump())
+		return;
+		
+	m_verticalVelocity = m_jumpSpeed;
+	m_wasJumping = true;
+	m_jumps++;
+}
+
 CcdPhysicsController::CcdPhysicsController (const CcdConstructionInfo& ci)
 :m_cci(ci)
 {
@@ -154,25 +196,6 @@ public:
 
 };
 
-class BlenderBulletCharacterController : public btKinematicCharacterController
-{
-private:
-	btMotionState* m_motionState;
-
-public:
-	BlenderBulletCharacterController(btMotionState *motionState, btPairCachingGhostObject *ghost, btConvexShape* shape, float stepHeight)
-		: btKinematicCharacterController(ghost,shape,stepHeight,2),
-		  m_motionState(motionState)
-	{
-	}
-
-	virtual void updateAction(btCollisionWorld *collisionWorld, btScalar dt)
-	{
-		btKinematicCharacterController::updateAction(collisionWorld,dt);
-		m_motionState->setWorldTransform(getGhostObject()->getWorldTransform());
-	}
-};
-
 btRigidBody* CcdPhysicsController::GetRigidBody()
 {
 	return btRigidBody::upcast(m_object);
diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsController.h b/source/gameengine/Physics/Bullet/CcdPhysicsController.h
index 6df5c85f5c0..91b2e558521 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsController.h
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsController.h
@@ -391,10 +391,31 @@ struct CcdConstructionInfo
 
 };
 
-
 class btRigidBody;
 class btCollisionObject;
 class btSoftBody;
+class btPairCachingGhostObject;
+
+class BlenderBulletCharacterController : public btKinematicCharacterController
+{
+private:
+	btMotionState* m_motionState;
+	int m_jumps;
+	int m_maxJumps;
+
+public:
+	BlenderBulletCharacterController(btMotionState *motionState, btPairCachingGhostObject *ghost, btConvexShape* shape, float stepHeight);
+
+	virtual void updateAction(btCollisionWorld *collisionWorld, btScalar dt);
+
+	int getMaxJumps() const;
+
+	void setMaxJumps(int maxJumps);
+
+	virtual bool canJump() const;
+
+	virtual void jump();
+};
 
 ///CcdPhysicsController is a physics object that supports continuous collision detection and time of impact based physics resolution.
 class CcdPhysicsController : public PHY_IPhysicsController
diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
index 486411d7e35..f1224babcf7 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
@@ -270,10 +270,10 @@ public:
 class CharacterWrapper : public PHY_ICharacter
 {
 private:
-	btKinematicCharacterController* m_controller;
+	BlenderBulletCharacterController* m_controller;
 
 public:
-	CharacterWrapper(btKinematicCharacterController* cont)
+	CharacterWrapper(BlenderBulletCharacterController* cont)
 		: m_controller(cont)
 	{}
 
@@ -295,6 +295,16 @@ public:
 	{
 		m_controller->setGravity(gravity);
 	}
+
+	virtual int GetMaxJumps()
+	{
+		return m_controller->getMaxJumps();
+	}
+
+	virtual void SetMaxJumps(int maxJumps)
+	{
+		m_controller->setMaxJumps(maxJumps);
+	}
 };
 
 class CcdOverlapFilterCallBack : public btOverlapFilterCallback
@@ -2320,7 +2330,7 @@ PHY_ICharacter* CcdPhysicsEnvironment::getCharacterController(KX_GameObject *ob)
 {
 	CcdPhysicsController* controller = (CcdPhysicsController*)ob->GetPhysicsController()->GetUserData();
 	if (controller->GetCharacterController())
-		return new CharacterWrapper(controller->GetCharacterController());
+		return new CharacterWrapper((BlenderBulletCharacterController*)controller->GetCharacterController());
 
 	return NULL;
 }