private void FindSelectableTiles(TileSearchType searchType, int attackCost = Constants.ATTACK_AP_COST)
{
ClearVisitedTiles();
AssignCurrentTile();
if (actionPoints == 0)
{
return;
}
if (actionPoints < attackCost && searchType == TileSearchType.ATTACK_ONLY)
{
return;
}
if (actionPoints < attackCost && searchType == TileSearchType.CHARGE_ATTACK)
{
return;
}
if (actionPoints < attackCost && searchType == TileSearchType.RANGED_ATTACK_ONLY)
{
return;
}
if (actionPoints < attackCost && searchType == TileSearchType.REACH_ATTACK_ONLY)
{
return;
}
if (actionPoints < attackCost && searchType == TileSearchType.ALLY_BUFF)
{
return;
}
// TODO: Replace with PriorityQueue for performance optimization
List <Tile> queue = new List <Tile>();
queue.Add(currentTile);
visitedTiles.Add(currentTile);
currentTile.wasVisited = true;
// Can buff self or ally with ally buff.
if (searchType == TileSearchType.ALLY_BUFF)
{
selectableTiles.Add(currentTile);
currentTile.isSelectable = true;
}
while (queue.Count > 0)
{
queue.Sort((item1, item2) => item1.distance.CompareTo(item2.distance));
Tile tile = queue[0];
queue.RemoveAt(0);
// Only default can select tiles that end in movement.
if (tile != currentTile && (searchType == TileSearchType.DEFAULT || searchType == TileSearchType.DEFAULT_RANGED || searchType == TileSearchType.DEFAULT_REACH))
{
selectableTiles.Add(tile);
tile.isSelectable = true;
}
// Potential ranged attacks
if (searchType == TileSearchType.DEFAULT_RANGED || searchType == TileSearchType.RANGED_ATTACK_ONLY)
{
AssignRangedAttackTargets(tile, attackCost, true);
}
// Potential reach attacks
if (searchType == TileSearchType.DEFAULT_REACH || searchType == TileSearchType.REACH_ATTACK_ONLY)
{
AssignReachAttackTargets(tile, attackCost);
}
// Potential ally buffs
if (searchType == TileSearchType.ALLY_BUFF)
{
AssignRangedAttackTargets(tile, attackCost, false);
}
foreach (Tile adjacentTile in tile.adjacentTileList)
{
if (adjacentTile.isBlocked)
{
// Potential melee attacks.
if (!adjacentTile.wasVisited && IsMeleeType(searchType))
{
if (searchType == TileSearchType.CHARGE_ATTACK && tile.distance <= actionPoints && ContainsEnemy(adjacentTile))
{
AttachTile(attackCost > tile.distance ? attackCost : tile.distance, adjacentTile, tile);
selectableTiles.Add(adjacentTile);
adjacentTile.isSelectable = true;
}
else if (tile.distance + attackCost <= actionPoints && ContainsEnemy(adjacentTile))
{
AttachTile(attackCost, adjacentTile, tile);
selectableTiles.Add(adjacentTile);
adjacentTile.isSelectable = true;
}
visitedTiles.Add(adjacentTile);
adjacentTile.wasVisited = true;
}
continue;
}
// Potential children in search tree.
if (!adjacentTile.wasVisited || adjacentTile.IsFasterParent(tile))
{
if (adjacentTile.GetTotalDistanceWithParent(tile) <= actionPoints)
{
// You cannot step up a stair of more than .25 meters, though you can jump down any height.
if (adjacentTile.transform.position.y > tile.transform.position.y + .25f)
{
continue;
}
adjacentTile.wasVisited = true;
visitedTiles.Add(adjacentTile);
AttachTile(-1, adjacentTile, tile);
queue.Add(adjacentTile);
}
}
}
}
}
public void SetTileSearchType(TileSearchType t)
{
DEFAULT_ATTACK_TYPE = t;
}
// Returns true for basic melee types (not reach or ranged).
private bool IsMeleeType(TileSearchType searchType)
{
return(searchType == TileSearchType.DEFAULT ||
searchType == TileSearchType.ATTACK_ONLY ||
searchType == TileSearchType.CHARGE_ATTACK);
}
