BGE : Collision mask support in raycast + and raycast cleanup.

I have removed the m_pHitObject, m_xray and m_testPropName and replace them by a temporary struct "RayCastData" which contains these datas and a collision mask. Finally i add a collision mask argument in the python function "rayCast" :
```
rayCast(to, from, dist, prop, face, xray, poly, mask)
```

It can be useful to hit only object which are on the right colision layer. for example if you have hitbox for a charater or vehicle you don't want to hit it with raycast.

test file : {F237337}
left mouse click on two planes and see console messages.

Somewhat more elaborate test file by @sybren: {F237779}
Look around and click on the cubes. One cube lamp responds, the other doesn't, based on their collision groups.

Reviewers: moguri, hg1, agoose77, campbellbarton, sybren

Reviewed By: agoose77, campbellbarton, sybren

Subscribers: campbellbarton, sergey, blueprintrandom, sybren

Projects: #game_engine, #game_physics

Differential Revision: https://developer.blender.org/D1239

1 files changed, 3 insertions, 3 deletions

diff --git a/source/gameengine/Ketsji/KX_RaySensor.cpp b/source/gameengine/Ketsji/KX_RaySensor.cpp
index c97d233a67b..4ffb5f332db 100644
--- a/source/gameengine/Ketsji/KX_RaySensor.cpp
+++ b/source/gameengine/Ketsji/KX_RaySensor.cpp
@@ -107,7 +107,7 @@ bool KX_RaySensor::IsPositiveTrigger()
 	return result;
 }
 
-bool KX_RaySensor::RayHit(KX_ClientObjectInfo *client, KX_RayCast *result, void * const data)
+bool KX_RaySensor::RayHit(KX_ClientObjectInfo *client, KX_RayCast *result, void *UNUSED(data))
 {
 
 	KX_GameObject* hitKXObj = client->m_gameobject;
@@ -158,7 +158,7 @@ bool KX_RaySensor::RayHit(KX_ClientObjectInfo *client, KX_RayCast *result, void
 /* this function is used to pre-filter the object before casting the ray on them.
  * This is useful for "X-Ray" option when we want to see "through" unwanted object.
  */
-bool KX_RaySensor::NeedRayCast(KX_ClientObjectInfo *client)
+bool KX_RaySensor::NeedRayCast(KX_ClientObjectInfo *client, void *UNUSED(data))
 {
 	KX_GameObject *hitKXObj = client->m_gameobject;
 
@@ -282,7 +282,7 @@ bool KX_RaySensor::Evaluate()
 	PHY_IPhysicsEnvironment* physics_environment = this->m_scene->GetPhysicsEnvironment();
 	
 
-	KX_RayCast::Callback<KX_RaySensor> callback(this, spc);
+	KX_RayCast::Callback<KX_RaySensor, void> callback(this, spc);
 	KX_RayCast::RayTest(physics_environment, frompoint, topoint, callback);
 
 	/* now pass this result to some controller */