public int GetMoveCost(unitMovementType_t movementType)
{
int val = (int)movementType;
if (val >= movementCosts.Length)
{
print("ERROR A TILE HAS A BAD MOVEMENT COSTS ARRAY");
return(1);
}
return(movementCosts[(int)movementType]);
}
public bool FindShortestPath(Unit unit, Vector2 goalVec, List <int> path)
{
int goalIndex = GetPositionIndex(goalVec.x, goalVec.y);
List <int> frontier = new List <int>();
int[] priorityList = new int[floorTiles.Length];
int[] moveCost = new int[floorTiles.Length];
int[] cameFrom = new int[floorTiles.Length];
int gridSize = rows * columns;
for (int i = 0; i < moveCost.Length; ++i)
{
priorityList[i] = gridSize;
moveCost[i] = -1;
cameFrom[i] = -1;
}
unitMovementType_t movementType = unit.GetMovementType();
int maxRange = unit.GetCurrentMovementRange();
int startIndex = GetPositionIndex((int)unit.transform.position.x, (int)unit.transform.position.y);
frontier.Add(startIndex);
moveCost[startIndex] = 0;
priorityList[startIndex] = CalcDistanceSquared(startIndex, goalIndex);
while (frontier.Count != 0)
{
int currentIndex = frontier[0];
frontier.RemoveAt(0);
int currentRange = moveCost[currentIndex];
if (currentIndex == goalIndex)
{
path.Add(currentIndex);
int pathIndex = currentIndex;
while (cameFrom[pathIndex] >= 0)
{
path.Add(cameFrom[pathIndex]);
pathIndex = cameFrom[pathIndex];
}
return(true);
}
else if (currentRange == maxRange)
{
continue;
}
// Movement Ranges
Tile currentTile = floorTiles[currentIndex].GetComponent <Tile>();
if (currentTile != null)
{
foreach (Tile nextTile in currentTile.neighbors)
{
int newIndex = GetPositionIndex(nextTile.transform.position);
int newCost = currentRange + nextTile.GetMoveCost(movementType);
if (newCost <= maxRange && (moveCost[newIndex] < 0 || newCost < moveCost[newIndex]))
{
moveCost[newIndex] = newCost;
int priorityValue = newCost + CalcDistanceSquared(goalIndex, newIndex);
bool found = false;
for (int f = 0; f < frontier.Count; ++f)
{
if (priorityValue < priorityList[frontier[f]])
{
found = true;
frontier.Insert(f, newIndex);
priorityList[newIndex] = priorityValue;
cameFrom[newIndex] = currentIndex;
break;
}
}
if (!found)
{
frontier.Add(newIndex);
}
}
}
}
}
return(false);
}
void CalculateRanges(Unit unit)
{
List <int> frontier = new List <int>();
List <int> attackFrontier = new List <int>();
int[] moveCost = new int[floorTiles.Length];
int[] attackMoveCost = new int[floorTiles.Length];
for (int i = 0; i < moveCost.Length; ++i)
{
moveCost[i] = -1;
attackMoveCost[i] = 0;
}
int maxRange = unit.GetCurrentMovementRange();
int maxAttackRange = unit.GetMaxAttackRange();
int startIndex = GetPositionIndex((int)unit.transform.position.x, (int)unit.transform.position.y);
unitMovementType_t movementType = unit.GetMovementType();
moveCost[startIndex] = 0;
frontier.Add(startIndex);
while (frontier.Count != 0)
{
int currentIndex = frontier[0];
frontier.RemoveAt(0);
int currentRange = moveCost[currentIndex];
if (currentRange == maxRange)
{
//Get attack range
attackFrontier.Add(currentIndex);
continue;
}
Tile currentTile = floorTiles[currentIndex].GetComponent <Tile>();
if (currentTile != null)
{
foreach (Tile nextTile in currentTile.neighbors)
{
int newIndex = GetPositionIndex(nextTile.transform.position);
if (moveCost[newIndex] < 0)
{
int nextRange = currentRange + nextTile.GetMoveCost(movementType);
if (nextRange > maxRange && !attackFrontier.Contains(currentIndex))
{
attackFrontier.Add(currentIndex);
}
else
{
moveCost[newIndex] = nextRange;
frontier.Add(newIndex);
}
}
}
}
}
while (attackFrontier.Count != 0)
{
int currentIndex = attackFrontier[0];
attackFrontier.RemoveAt(0);
int currentAttackRange = attackMoveCost[currentIndex];
if (currentAttackRange == maxAttackRange)
{
continue;
}
Tile currentTile = floorTiles[currentIndex].GetComponent <Tile>();
if (currentTile != null)
{
foreach (Tile nextTile in currentTile.neighbors)
{
int newIndex = GetPositionIndex(nextTile.transform.position);
if (moveCost[newIndex] < 0 && attackMoveCost[newIndex] <= 0)
{
attackMoveCost[newIndex] = currentAttackRange + 1;
attackFrontier.Add(newIndex);
}
}
}
}
for (int i = 0; i < moveCost.Length; ++i)
{
if (moveCost[i] >= 0)
{
unit.movementRangeList.Add(GetPositionFromIndex(i));
}
if (attackMoveCost[i] > 0)
{
unit.attackRangeList.Add(GetPositionFromIndex(i));
}
}
}
