public IEnumerator moveUnitToTargetTile(Vector3 destination)
{
List <Vector3> path = new List <Vector3>();
Vector3 nextTile = destination;
// Create path backwards (going from the destination to the unit's starting position)
while (nextTile != currentlySelectedUnit.transform.position)
{
TileToCheck t = listOfAlreadyCheckedTiles.Find(x => x.pos == nextTile);
path.Add(t.pos);
nextTile = t.posOfParentTile;
}
path.Reverse();
int pathIndex = 0;
float timeSinceStarted = 0f;
float movementSpeed = path.Count * 2f;
// Move the unit tile by tile
while (pathIndex < path.Count)
{
// Make the unit move smoothly towards the next tile in the path
timeSinceStarted += Time.deltaTime;
currentlySelectedUnit.transform.position = Vector3.Lerp(currentlySelectedUnit.transform.position, path[pathIndex], timeSinceStarted * movementSpeed);
// If the unit reaches the tile, prepare for the next tile in the path
if (currentlySelectedUnit.transform.position == path[pathIndex])
{
pathIndex++;
timeSinceStarted = 0;
}
// Go on to next frame8
yield return(null);
}
// Once the unit finishes the path, stop the coroutine and return control to the cursor
activeCursor = true;
currentlySelectedUnit.transform.position = destination; // Correct decimal deviations
yield break;
}
void checkIfTileIsValidForMovement(int posX, int posY, Vector3 parent, int rangeLeft)
{
Vector3 pos = new Vector3(posX, posY);
// Check if the tile has already been explored (FindIndex returns -1 otherwise)
if (listOfAlreadyCheckedTiles.FindIndex(x => x.pos == pos) >= 0)
{
TileToCheck tile = listOfAlreadyCheckedTiles.Find(x => x.pos == pos);
if (tile.maxRangeSoFar >= rangeLeft)
{
return; // Stop exploring, since that path has already been explored before
}
else // Otherwise, remove the tile (it has an incorrect maxRangeSoFar)
{
listOfAlreadyCheckedTiles.Remove(tile);
}
// Then keep exploring (the tile will be readded later)
}
if (validDestination(posX, posY))
{ // Add tile to list of valid targets
upperTilemap.SetTile(new Vector3Int(posX, posY, 0), tileSelectorMovement);
validTargets.Add(pos);
listOfAlreadyCheckedTiles.Add(new TileToCheck(pos, parent, rangeLeft));
// Keep checking if there is still range left
if (rangeLeft > 1)
{
checkValidMovementDestinationsRecursively(posX, posY, rangeLeft - 1);
}
}
else if (allyInTile(posX, posY))
{
listOfAlreadyCheckedTiles.Add(new TileToCheck(pos, parent, rangeLeft));
// If the tile is occupied by an ally, the unit cannot move there, but can pass through there
if (rangeLeft > 1)
{
checkValidMovementDestinationsRecursively(posX, posY, rangeLeft - 1);
}
}
}