/// <see cref="EntityPlacementConstraint.CheckImpl"/>
protected override RCSet <RCIntVector> CheckImpl(Scenario scenario, RCIntVector position, RCSet <Entity> entitiesToIgnore)
{
RCIntRectangle objArea = new RCIntRectangle(position, scenario.Map.CellToQuadSize(this.EntityType.Area.Read().Size));
RCSet <RCIntVector> retList = new RCSet <RCIntVector>();
VespeneGeyser foundVespeneGeyser = null;
bool isOK = true;
for (int absY = objArea.Top; absY < objArea.Bottom; absY++)
{
for (int absX = objArea.Left; absX < objArea.Right; absX++)
{
RCIntVector absQuadCoords = new RCIntVector(absX, absY);
if (absQuadCoords.X >= 0 && absQuadCoords.X < scenario.Map.Size.X &&
absQuadCoords.Y >= 0 && absQuadCoords.Y < scenario.Map.Size.Y)
{
retList.Add(absQuadCoords - position);
VespeneGeyser vespeneGeyserAtCoords = scenario.GetFixedEntity <VespeneGeyser>(absQuadCoords);
if (vespeneGeyserAtCoords == null || (foundVespeneGeyser != null && foundVespeneGeyser != vespeneGeyserAtCoords))
{
/// There is no VespeneGeyser at the given coordinates OR
/// the VespeneGeyser at the given coordinates is another VespeneGeyser.
isOK = false;
continue;
}
foundVespeneGeyser = vespeneGeyserAtCoords;
}
}
}
if (isOK)
{
retList.Clear();
}
return(retList);
}
