TapestryEngine

905c7c275895c3e18a39223f5fdb1a01c9ce0629.svn-base (5861B)

---

 #include "ActorCollision.h"
 
 bool SpatialMonitor::PartitionCells(int worldH, int worldW)
 {
 	int cellW = (worldW / CELLS_X);
 	int cellH = (worldH / CELLS_Y);
 
 	for (int i = 0; i < CELLS_Y; i++)
 	{
 		for (int j = 0; j < CELLS_X; j++)
 		{
 			Cell new_cell;
 			new_cell.GetCellRect()->w = cellW;
 			new_cell.GetCellRect()->h = cellH;
 			new_cell.GetCellRect()->x = cellW * j;
 			new_cell.GetCellRect()->y = cellH * i;
 
 			mCells[i*CELLS_X + j] = new_cell;
 
 		}
 	}
 	return true;
 }
 
 bool SpatialMonitor::LogActor(int id)
 {
 	//mActors[mActorCount] = &act;
 	//mActors.Insert(act.GetHandle(), &act);
 	//act.SetSpatID(mActorCount);
 	UpdateActorCell(id);
 	return true;
 }
 
 bool SpatialMonitor::ClearActorCell(int id)
 {
 	if (GetActorCell(id) != -1)
 	{
 		mCells[GetActorCell(id)].GetActorTree()->Search(id)->Delete();
 		return true;
 	}
 	return false;
 }
 
 
 int SpatialMonitor::UpdateActorCell(int id)
 {
 	Actor* act = (mAHM->GetActorAddress(id));
 	for (int i = 0; i < CELL_COUNT; i++)
 	{
 		if (DetectCenterPointIntersect( mCells[i].GetCellRect(),  act->GetPosition() ) )
 		{
 			//gCons->ConsPrintf("Actor entering cell %i\n", i);
 			
 			if (i != ((Collider*)(act))->GetSpatCell()) //not sure about all this casting, might be causing troubles
 			{
 				mCells[i].GetActorTree()->Insert(id, NULL);
 				ClearActorCell(id); 
 				((Collider*)(act))->SetSpatCell(i);
 			}
 
 			return i;
 		}
 	}
 	gCons->ConsPrintf("Could not find Actor cell\n");
 	return -1;
 }
 
 int SpatialMonitor::GetAdjacentCells(int cellnum, Cell* cells[9])
 {
 	cells[0] = GetCell((cellnum - CELLS_X - 1));
 	cells[1] = GetCell((cellnum - CELLS_X));
 	cells[2] = GetCell((cellnum - CELLS_X + 1));
 
 	cells[3] = GetCell((cellnum - 1));
 	cells[4] = GetCell((cellnum));
 	cells[5] = GetCell((cellnum + 1));
 	
 	cells[6] = GetCell((cellnum + CELLS_X - 1));
 	cells[7] = GetCell((cellnum + CELLS_X));
 	cells[8] = GetCell((cellnum + CELLS_X + 1));
 	
 	return 0;
 }
 
 bool SpatialMonitor::DetectActorCollision(int id1, int id2)
 {
 	if (id1 != id2)
 	{	
 		//gDiagDraw->LogDiagRect(*mActors[id2]->GetPosition());
 		return DetectRectIntersect(mAHM->GetActorAddress(id1)->GetPosition(), mAHM->GetActorAddress(id2)->GetPosition());
 	}
 	else
 	{
 		//gCons->ConsPrintf("Attempted to check actor collision with itself\n");
 		return false;
 	}
 }
 
 bool SpatialMonitor::DetectRectSensors(SDL_Rect* sensor, int DetectorID, int foreignID)
 {
 	if (DetectorID != foreignID)
 	{
 		//gDiagDraw->LogDiagRect(*sensor);
 		//gDiagDraw->LogDiagRect(*mActors[foreignID]->GetPosition());
 		return DetectRectIntersect(sensor, mAHM->GetActorAddress(foreignID)->GetPosition());
 	}
 	else
 	{
 		//gCons->ConsPrintf("Attempted to check actor collision with itself\n");
 		return false;
 	}
 }
 
 bool SpatialMonitor::HandleCollisions(int CallerID)
 {
 	int CallerCell = GetActorCell(CallerID);
 	
 	Cell* AdjecentCellIndex[9];
 	GetAdjacentCells(CallerCell, AdjecentCellIndex);
 
 	for (int i = 0; i < 9; i++)
 	{	
 		if (AdjecentCellIndex[i] != NULL)
 		{
 			Node** ActorTreeArray = (AdjecentCellIndex[i]->GetActorTree())->Dump();
 			if (ActorTreeArray != NULL)
 			{
 				for (int j = 0; j < (AdjecentCellIndex[i]->GetActorTree())->Size(); j++)
 				{
 					if (DetectActorCollision(CallerID, ActorTreeArray[j]->GetItem()) == true)
 					{
 						mAHM->GetActorAddress(CallerID)->EventProcess(Event(ACTOR_COLLISION, ActorTreeArray[j]->GetItem()));
 					}
 				}
 			}
 			else
 			{
 				//gCons->ConsPrintf("Cell is empty/n");
 			}
 		}
 		else
 		{
 			//Cell does not exist. do nothing
 		}
 	}
 
 	return true;
 }
 
 bool SpatialMonitor::HandleRectSensors(SDL_Rect* sensor, int CallerID, SensorType SeType)
 {
 	int CallerCell = GetActorCell(CallerID);
 
 	Cell* AdjecentCellIndex[9];
 	GetAdjacentCells(CallerCell, AdjecentCellIndex);
 
 	for (int i = 0; i < 9; i++)
 	{
 		if (AdjecentCellIndex[i] != NULL)
 		{
 			Node** ActorTreeArray = (AdjecentCellIndex[i]->GetActorTree())->Dump();
 
 			if (ActorTreeArray != NULL)
 			{
 				for (int j = 0; j < (AdjecentCellIndex[i]->GetActorTree())->Size(); j++)
 				{
 					Node* debugtool = ActorTreeArray[j];
 					if (DetectRectSensors(sensor, CallerID, ActorTreeArray[j]->GetItem()) == true)
 					{
 						mAHM->GetActorAddress(CallerID)->EventProcess(Event(SENSOR_COLLISION, SeType, ActorTreeArray[j]->GetItem())); //Used to pass actor* now passed ID number. receiver functions need to be updated
 					}
 				}
 			}
 			else
 			{
 				//gCons->ConsPrintf("Cell is empty/n");
 			}
 		}
 		else
 		{
 			//Cell does not exist. do nothing
 		}
 	}
 	return true;
 }
 
 bool SpatialMonitor::TestBlockers(SDL_Rect* sensor, int CallerID)
 {
 	int CallerCell = GetActorCell(CallerID);
 
 	Cell* AdjecentCellIndex[9];
 	GetAdjacentCells(CallerCell, AdjecentCellIndex);
 
 	for (int i = 0; i < 9; i++)
 	{
 		if (AdjecentCellIndex[i] != NULL)
 		{
 			Node** ActorTreeArray = ((AdjecentCellIndex[i]->GetActorTree())->Dump());
 			if (ActorTreeArray != NULL)
 			{
 				for (int j = 0; j < (AdjecentCellIndex[i]->GetActorTree())->Size(); j++)
 				{
 					if (DetectRectSensors(sensor, CallerID, ActorTreeArray[j]->GetItem()) == true)
 					{
 						if (mAHM->GetActorAddress(ActorTreeArray[j]->GetItem())->IsBlocking() == true)
 						{
 							return true;
 						}
 					}
 				}
 			}
 			else
 			{
 				//gCons->ConsPrintf("Cell is empty/n");
 			}
 		}
 		else
 		{
 			//Cell does not exist. do nothing
 		}
 	}
 	return false;
 }
 
 bool SpatialMonitor::EventProcess(Event eve)
 {
 	switch (*eve.GetEventType())
 	{
 	case MOVED_THIS_FRAME:
 		UpdateActorCell(eve.GetEventData()->i);
 		HandleCollisions(eve.GetEventData()->i);
 		return true;
 		break;
 	case CHECK_RECT_SENSOR:
 		HandleRectSensors(eve.GetEventData()->sd.sensor, eve.GetEventData()->sd.id, eve.GetEventData()->sd.st);
 		return true;
 		break;
 	case CHECK_BLOCKERS:
 		return TestBlockers(eve.GetEventData()->sd.sensor, eve.GetEventData()->sd.id);
 		break;
 	default:
 		gCons->ConsPrintf("Spatial Monitor Received Invalid Event Type\n");
 		return false;
 		break;
 	}
 }