Bounding Box Coordinate Question

#1 If you don't mind an object-aligned bounding box (which i imagine is probably preferred) you might use worldToLocalPoint() and its counterpart.

i think something like this is close to what you want:

// %impactWorld = the world-space impact point
   %impactLocal = %player.worldToLocalPoint(%impactWorld);
   %outputLocal = vectorScale(%impactLocal, -1);
   %outputWorld = %player.localToWorldPoint(%outputLocal)

if you don't want the altitude to change, then you could implement vectorConvolve()
and change the vectorScale() line to:

%outputLocal = vectorConvolve(%impactLocal, "-1 -1 1");

#2 Actually, you might need to get rid of the lines commented "bummer about this" in worldToLocal -
those are in there to account for some weirdness with the coordinate system of Triggers.

i guess those functions should really be split up into
SceneObject::worldToLocalPoint()
and
Trigger::worldToLocalPoint()

#3 Interesting. Unfortunately I am trying to accomplish the majority of this in code.

This is what I have so far in the projectile.cc processTick just before the explode and OnCollision calls:

if( rInfo.object->getTypeMask() & TerrainObjectType )
		 {
             TerrainBlock* tBlock = static_cast<TerrainBlock*>(rInfo.object);
			 S32 mapIndex = tBlock->getTerrainMapIndex(rInfo.point);

             if (mapIndex != -1) 
             {
                  MaterialPropertyMap* pMatMap = static_cast<MaterialPropertyMap*>(Sim::findObject("MaterialPropertyMap"));
                  const MaterialPropertyMap::MapEntry* pEntry = pMatMap->getMapEntryFromIndex(mapIndex);
                  if(pEntry)
				  {
                      pMatType = pEntry->matType;
				  }
			 }
		 }
		 else if( rInfo.object->getTypeMask() & InteriorObjectType )
		 {
             MaterialPropertyMap* pMatMap = static_cast<MaterialPropertyMap*>(Sim::findObject("MaterialPropertyMap"));
             const MaterialPropertyMap::MapEntry* pMatEnt = pMatMap->getMapEntryFromIndex(rInfo.material);

			 if (pMatEnt)
			 {
				 pMatType = pMatEnt->matType;
			 }
		 }
		 else if( rInfo.object->getTypeMask() & PlayerObjectType )
		 {
			 Point3F playerRearPosition = mCurrPosition + savedCurrVelocity * (F32(TickMs) / 1000.0f);

			 if (getContainer()->castRay(savedOldPosition, playerRearPosition, csmStaticCollisionMask, &pInfo) == true)
			 {
                 Point3F impactNormalB(pInfo.point);
				 impactNormalB-=savedOldPosition;
				 impactNormalB.normalize();

				 if(mDataBlock->NumBS > 0)
				 {
					 // randomly choose a decal between 0 and (decal count - 1)
					 U32 idx = (U32)(mCeil(mDataBlock->NumBS * Platform::getRandom()) - 1.0f);
					 // this should never choose a NULL idx, but check anyway
					 if(mDataBlock->bloodSplatter[idx] != NULL)
					 {
						 DecalManager *decalMngr = gClientSceneGraph->getCurrentDecalManager();
						 if(decalMngr)
						 {
							 decalMngr->addWrapDecal(pInfo.point, pInfo.normal, impactNormalB, mDataBlock->bloodSplatter[idx]);
						 }
					 }
				 }
			 }
		 }
		 else
		 {
			 //Going to do more here when we figure out or acquire DTS painting
			 Con::errorf(ConsoleLogEntry::General, "Projectile hit a Shapebase Object");
		 }

         //Hitbox code Start RJN
         Point3F impactNormal(mCurrPosition);
         impactNormal-=oldPosition;
         impactNormal.normalize();

I have tested this with console log entires in several different places and have made the following observations:

1. it makes the collision with the player object just fine

2. While it says it detects an interior object behind the player, it doesn't place a decal.

3. It claims that the interior object is server side only.

4. It works perfectly on interiors and terrain when they are the primary contact.

5. Anything more than a couple projectiles at the player will crash the game as well.

Now what the wierd looking stuff there like addWrap decal and the hitboxes, well yeah a lot of my stuff has hitboxes and I managed to get the majority of DavidRM's wrapping decal code working (still working out how to get it to cooperate with batched decals).

I have done this with regular decals, a seperate function for placeing the decals, and SEVERAL different methods of trying to get the coordinates I need, with about the same results each time.


So, thanks a ton Orion, but my method will require a bit of conversions since I am not script based on this. But thanks, you always have great advice.