C++ (Cpp) PickCell Examples

Example #1

File: TerrainData.cpp Project: Pinkof/rpgskyengine

bool CTerrainData::Pick(const Vec3D& vRayPos, const Vec3D& vRayDir, Vec3D* pPos)const
{
	// 格子地图的快速PICK
	int nIncX = vRayDir.x>0?1:-1;
	int nIncY = vRayDir.z>0?1:-1;
	float fK = vRayDir.z/vRayDir.x;
	float fB = vRayPos.z - fK*vRayPos.x;
	int nX = int(vRayPos.x)-nIncX;
	int nY = int(vRayPos.z)-nIncY;

	if (fK<1&&fK>-1)
	{
		for (int i = 0; i < MAX_PICK_COUNT; i++)
		{
			int nCellX = nX + nIncX;
			int nCellY = (int)(fK*(float)nCellX+fB);
			if (nCellY!=nY)
			{
				nY = nCellY;
				nCellX = nX - (nIncX<0);
				nCellY = nY - nIncY*(nIncX<0);
			}
			else
			{
				nX = nCellX;
			}
			if (PickCell(nCellX, nCellY, vRayPos, vRayDir, pPos))
			{
				return true;
			}
		}
	}
	else
	{
		for (int i = 0; i < MAX_PICK_COUNT; i++)
		{
			int nCellY = nY + nIncY;
			int nCellX = (int)(((float)nCellY-fB)/fK);
			if (nCellX!=nX)
			{
				nX = nCellX;
				nCellX = nX - nIncX*(nIncY<0);
				nCellY = nY - (nIncY<0);
			}
			else
			{
				nY = nCellY;
			}
			if (PickCell(nCellX, nCellY, vRayPos, vRayDir, pPos))
			{
				return true;
			}
		}
	}
	return false;
}

Example #2

File: UIDragDropReferenceList.cpp Project: AntonioModer/xray-16

void CUIDragDropReferenceList::OnItemDrop(CUIWindow* w, void* pData)
{
	OnItemSelected(w, pData);
	CUICellItem* itm = smart_cast<CUICellItem*>(w);
	VERIFY(itm->OwnerList() == itm->OwnerList());

	if(m_f_item_drop && m_f_item_drop(itm))
	{
		DestroyDragItem();
		return;
	}

	CUIDragDropListEx*	old_owner		= itm->OwnerList();
	CUIDragDropListEx*	new_owner		= m_drag_item->BackList();
	if(old_owner && new_owner && old_owner!=new_owner)
	{
		inherited::OnItemDrop(w, pData);
		return;
	}

	CActor* actor = smart_cast<CActor*>(Level().CurrentViewEntity());
	if(actor)
	{
		Ivector2 vec = PickCell(GetUICursor().GetCursorPosition());
		if(vec.x!=-1&&vec.y!=-1)
		{
			Ivector2 vec2 = m_container->GetItemPos(itm);
			if(vec2.x!=-1&&vec2.y!=-1)
			{
				u8 index = u8(vec2.x);
				shared_str tmp = ACTOR_DEFS::g_quick_use_slots[vec.x];
				xr_strcpy(ACTOR_DEFS::g_quick_use_slots[vec.x], ACTOR_DEFS::g_quick_use_slots[index]);
				xr_strcpy(ACTOR_DEFS::g_quick_use_slots[index], tmp.c_str());
				ReloadReferences(actor);
				return;
			}
		}
	}
	DestroyDragItem();
}