/**
* IDragAndDropInterface method implementation for PlacementValid
*
* Determines if a location is valid for placement
*
* This is the outwardly-facing function, which will take care of any
* generic actions common to all towers and then rely on each class's
* TowerPlacementValid implementation for actually determining if the
* location is valid.
*/
public bool PlacementValid(RaycastHit primaryHitInfo, List <RaycastHit> secondaryHitInfo)
{
bool placementValid = TowerPlacementValid(primaryHitInfo, secondaryHitInfo);
if (placementValid)
{
rangeEffect.UpdateEffect(TowerRangeEffect.EffectState.Valid);
}
else
{
rangeEffect.UpdateEffect(TowerRangeEffect.EffectState.Invalid);
}
return(placementValid);
}
/**
* Check for a tower and apply the effects that selecting a tower should trigger
*
* @param hitObject GameObject The object that the raycast hit
* @param isLeftMouse Bool dictating if the left mouse button was clicked or not
*/
private void CheckForTower(GameObject hitObject, bool isLeftMouse)
{
// Flag to tell us later if we actually hit a tower
bool hitTower = false;
// Attempt to get the TowerBase component from the object if it has one
TowerBase towerTemp = hitObject.GetComponent <TowerBase>();
// Make sure that we found a TowerBase component that is active
if (towerTemp != null && towerTemp.isActiveAndEnabled)
{
// Set flag so we know later that we hit a tower
hitTower = true;
// Turn off previous effect if there was one
if (selectedRangeEffect != null && selectedRangeEffect != hitObject.GetComponent <TowerRangeEffect>())
{
// Turn the neutral range effect off
selectedRangeEffect.UpdateEffect(TowerRangeEffect.EffectState.Off);
}
// Set as selected tower
selectedTower = towerTemp;
// Get the range effect component and update it to show the neutral tower range effect
selectedRangeEffect = hitObject.GetComponent <TowerRangeEffect>();
selectedRangeEffect.UpdateEffect(selectedRangeEffect.State == TowerRangeEffect.EffectState.Off ? TowerRangeEffect.EffectState.Neutral : TowerRangeEffect.EffectState.Off);
}
// If we did not hit a tower, remove selected tower
if (!hitTower)
{
// Remove reference
if (selectedTower != null)
{
selectedTower = null;
}
// Remove references to other components
if (selectedRangeEffect != null)
{
// Turn the neutral range effect off
selectedRangeEffect.UpdateEffect(TowerRangeEffect.EffectState.Off);
selectedRangeEffect = null;
}
}
}
