//returns enemy units, current unit can attack
public ICollection <Unit> GetAttackedUnits()
{
if (CurrentUnit == null)
{
UnityEngine.Debug.LogError("attacking unit is not assigned");
return(null);
}
HashSet <Unit> attackedUnits = new HashSet <Unit>();
int group = CurrentUnit.Group;
ISet <Tile> attackedTiles = BattleMovementUtils.FindAttackedTiles
(new HashSet <Tile> {
CurrentUnit.OccupiedTile
}, CurrentUnit.GetWeaponsRanges());
foreach (Tile tile in attackedTiles)
{
if (tile.IsOccupied())
{
int enemyGroup = tile.Occupier.Group;
if (group != enemyGroup &&
!_battleTurnManager.InAlliance(group, enemyGroup))
{
attackedUnits.Add(tile.Occupier);
}
}
}
return(attackedUnits);
}
//returns removed tiles
public ISet <Tile> UpdateTrackedTiles()
{
var trackedTiles = new HashSet <Tile>();
foreach (Unit unit in TrackedUnits)
{
var moveableTiles = BattleMovementUtils.FindViableMoves(unit);
var attackableTiles = BattleMovementUtils.FindAttackedTiles(moveableTiles, unit.GetWeaponsRanges());
trackedTiles.UnionWith(attackableTiles);
}
TrackedTiles.ExceptWith(trackedTiles);
var diff = new HashSet <Tile>(TrackedTiles);
TrackedTiles = trackedTiles;
return(diff);
}
//disables overlays then if unit occupies the tile, calculates move overlays for it
public void OnNewTile(Tile tile)
{
CurrentUnit = null;
_overlaysManager.DisableTemporaryOverlays();
if (tile.IsOccupied())
{
CurrentUnit = tile.Occupier;
if (_battleTurnManager.IsInActiveGroup(CurrentUnit))
{
UnitMoveTiles = BattleMovementUtils.FindViableMoves(CurrentUnit);
AttackedTiles = BattleMovementUtils.FindAttackedTiles(UnitMoveTiles, CurrentUnit.GetWeaponsRanges());
_overlaysManager.EnablePlayerMoveOverlays(UnitMoveTiles);
_overlaysManager.EnableAttackedOverlays(AttackedTiles);
}
else
{
EnemyTiles = BattleMovementUtils.FindViableMoves(CurrentUnit);
EnemyTiles.UnionWith(BattleMovementUtils.FindAttackedTiles(EnemyTiles, CurrentUnit.GetWeaponsRanges()));
_overlaysManager.EnableEnemyOverlays(EnemyTiles);
}
}
}
