public BuildInfo _CheckBuildPoint(Vector3 pointer, int towerID)
{
BuildInfo buildInfo = new BuildInfo();
if (disableBuildWhenInPlay && SpawnManager.GetActiveUnitCount() > 0)
{
buildInfo.status = _TileStatus.NotInBuildPhase;
return(buildInfo);
}
Camera mainCam = Camera.main;
if (mainCam != null)
{
Ray ray = mainCam.ScreenPointToRay(pointer);
RaycastHit hit;
if (Physics.Raycast(ray, out hit, Mathf.Infinity, maskPlatform))
{
for (int i = 0; i < buildPlatforms.Count; i++)
{
if (hit.transform == buildPlatforms[i].thisT)
{
PlatformTD platform = buildPlatforms[i];
//calculating the build center point base on the input position
Vector3 pos = GetTilePos(platform, hit.point);
buildInfo.position = pos;
buildInfo.platform = platform;
//checking if tower can be built on the platform, for dragNdrop mode
if (towerID >= 0 && !platform.availableTowerIDList.Contains(towerID))
{
buildInfo.status = _TileStatus.Unavailable;
}
if (buildInfo.status == _TileStatus.Available)
{
//check if the position is blocked, by any other obstabcle other than the baseplane itself
Collider[] cols = Physics.OverlapSphere(pos, gridSize / 2 * 0.9f, ~maskAll);
if (cols.Length > 0)
{
buildInfo.status = _TileStatus.NoPlatform;
}
else
{
buildInfo.status = _TileStatus.Available;
}
if (buildInfo.status == _TileStatus.Available)
{
//check if the platform is walkable, if so, check if building on the point wont block all possible path
if (platform.IsWalkable())
{
if (platform.CheckForBlock(pos))
{
buildInfo.status = _TileStatus.Blocked;
}
}
//map platform availableTowerIDList (which is the towers' prefabID) to the list elements' ID in towerList
buildInfo.availableTowerIDList = new List <int>();
for (int m = 0; m < platform.availableTowerIDList.Count; m++)
{
for (int n = 0; n < towerList.Count; n++)
{
if (platform.availableTowerIDList[m] == towerList[n].prefabID)
{
buildInfo.availableTowerIDList.Add(n);
break;
}
}
}
}
}
break;
}
}
}
else
{
buildInfo.status = _TileStatus.NoPlatform;
}
}
else
{
buildInfo.status = _TileStatus.NoPlatform;
}
//reverse block status for mine
if (buildInfo.status == _TileStatus.Blocked)
{
//for drag n drop mode
if (towerID >= 0 && GetTowerPrefab(towerID).type == _TowerType.Mine)
{
buildInfo.status = _TileStatus.Available;
}
if (towerID < 0)
{
bool gotMineInList = false;
for (int i = 0; i < buildInfo.availableTowerIDList.Count; i++)
{
if (towerList[buildInfo.availableTowerIDList[i]].type == _TowerType.Mine)
{
gotMineInList = true;
}
else
{
buildInfo.availableTowerIDList.RemoveAt(i);
i -= 1;
}
}
if (gotMineInList)
{
buildInfo.status = _TileStatus.Available;
}
}
}
if (!UseDragNDrop()) //for PointNClick
{
if (buildInfo.status != _TileStatus.Available)
{
IndicatorControl.ClearBuildTileIndicator();
}
else
{
IndicatorControl.SetBuildTileIndicator(buildInfo);
}
}
return(buildInfo);
}