// Find the closest fit for units into a bounding area, scaling the size of the units and finding optimal layout
// in the bounding area. Moves the units to the bounding area once a size is found
private void LayoutArmy(float overSeconds = 0)
{
mInvaderControllerDimensions = InvaderPrefab.GetComponent <RectTransform>().rect.size;
mInvaderControllerDimensions += Vector3.one * 20 * 2f;
float prefabScale = 1f;
float unitsPerColumn = 0;
int numArchers = mInvaderControllers[InvaderType.Archer].Count;
int numHealers = mInvaderControllers[InvaderType.Healer].Count;
int numSoldiers = mInvaderControllers[InvaderType.Soldier].Count;
int errorBreak = 10; // upper limit of resizing
while (errorBreak-- > 0)
{
unitsPerColumn = Mathf.FloorToInt(BoundingArea.y / mInvaderControllerDimensions.y);
if (unitsPerColumn == 0)
{
unitsPerColumn = 1;
prefabScale = mInvaderControllerDimensions.y / BoundingArea.y;
mInvaderControllerDimensions *= prefabScale;
}
float numColumns = Mathf.Ceil(numArchers / unitsPerColumn);
numColumns += Mathf.Ceil(numHealers / unitsPerColumn);
numColumns += Mathf.Ceil(numSoldiers / unitsPerColumn);
float totalWidthNeeded = numColumns * mInvaderControllerDimensions.x;
float difference = (BoundingArea.x - totalWidthNeeded) / BoundingArea.x;
if (difference < 0)
{
prefabScale /= 1 + (Mathf.Abs(difference) / 2f);
mInvaderControllerDimensions /= 1 + (Mathf.Abs(difference) / 2f);
}
else
{
break;
}
}
// place soldiers
int count = 0;
int columnCount = 0;
InvaderType[] invaderOrderings = { InvaderType.Archer, InvaderType.Healer, InvaderType.Soldier };
for (int typeIdx = 0; typeIdx < invaderOrderings.Length; typeIdx++)
{
List <InvaderController> controllers = mInvaderControllers[invaderOrderings[typeIdx]];
foreach (InvaderController controller in controllers)
{
if (count == unitsPerColumn)
{
count = 0;
columnCount++;
}
controller.transform.localScale = Vector3.one * prefabScale;
Vector3 positionInArmy = new Vector3(columnCount * mInvaderControllerDimensions.x, -count * mInvaderControllerDimensions.y);
if (overSeconds > 0)
{
controller.MoveToPosition(transform.position + positionInArmy, overSeconds);
//controller.transform.localPosition = positionInArmy;
}
else // set at position
{
controller.transform.position = transform.position + positionInArmy;
}
count++;
}
// started a new column but didn't finish it. Add rest to next wave
if (count > 0)
{
count = 0;
columnCount++;
}
}
}
