protected virtual void OnDrag(Vector2 location)
{
// Check to see if the dragged cursor is now
// hovering over a new tile. Only if there is
// a targeted actor that it would effect.
if (targetedActor != null)
{
// Where is the cursor right now?
Vector2Int newTile =
grid.WorldToGrid(location);
// What direction do we have to walk in to reach this tile?
int xStep = (newTile.x - currentTile.x > 0) ? 1 : -1;
int yStep = (newTile.y - currentTile.y > 0) ? 1 : -1;
// Step towards the new tile, notifying the targeted actor
// of each tile that we cross along the way.
int step = 0;
while (currentTile != newTile)
{
// Hard limit put in place may break behaviour on cursor
// teleportation. Meant to prevent possible edge cases
// where the requested tile cannot be walked to.
if (++step > MAX_CURSOR_STEPS)
{
break;
}
// Walk tiles along each axis.
// This will generally infer a pattern where the cursor
// moves along a diagonally then flattens, this does not
// necassarily replicate the linear path of the cursor.
if (currentTile.x != newTile.x)
{
currentTile.x += xStep;
targetedActor.OnDragNewTile(currentTile);
}
if (currentTile.y != newTile.y)
{
currentTile.y += yStep;
targetedActor.OnDragNewTile(currentTile);
}
}
}
}
