private void UpdatePosition(EntityUid euid, ITransformComponent transform, SnapGridComponent snapComp)
{
if (snapComp.LastGrid != GridId.Invalid)
{
if (!_mapManager.TryGetGrid(snapComp.LastGrid, out var lastGrid))
{
Logger.WarningS("go.comp.snapgrid", "Entity {0} snapgrid didn't find grid {1}. Race condition?", euid, transform.GridID);
return;
}
lastGrid.RemoveFromSnapGridCell(snapComp.LastTileIndices, euid);
}
if (!_mapManager.TryGetGrid(transform.GridID, out var grid))
{
// Either a race condition, or we're not on any grids.
return;
}
var oldPos = snapComp.LastTileIndices;
var oldGrid = snapComp.LastGrid;
var newPos = grid.TileIndicesFor(transform.MapPosition);
var newGrid = transform.GridID;
grid.AddToSnapGridCell(newPos, euid);
if (oldPos != newPos || oldGrid != newGrid)
{
RaiseLocalEvent(euid, new SnapGridPositionChangedEvent(newPos, oldPos, newGrid, oldGrid));
}
snapComp.LastTileIndices = newPos;
snapComp.LastGrid = newGrid;
}
private void HandleComponentStartup(EntityUid uid, SnapGridComponent component, ComponentStartup args)
{
var transform = ComponentManager.GetComponent <ITransformComponent>(uid);
transform.Anchored = true;
// Remove us, we have been migrated.
ComponentManager.RemoveComponent <SnapGridComponent>(uid);
}
private void HandleComponentShutdown(EntityUid uid, SnapGridComponent component, ComponentShutdown args)
{
if (component.LastGrid == GridId.Invalid)
{
return;
}
var transform = ComponentManager.GetComponent <ITransformComponent>(uid);
if (_mapManager.TryGetGrid(component.LastGrid, out var grid))
{
var indices = grid.TileIndicesFor(transform.WorldPosition);
grid.RemoveFromSnapGridCell(indices, uid);
return;
}
component.LastGrid = GridId.Invalid;
}
private void HandleMoveEvent(EntityUid uid, SnapGridComponent component, MoveEvent args)
{
var transform = ComponentManager.GetComponent <ITransformComponent>(uid);
UpdatePosition(uid, transform, component);
}