/// <summary>
/// Builds the building at <paramref name="topLeftCorner"/> if it is possible.
/// </summary>
/// <param name="id">The identifier of the new building.</param>
/// <param name="topLeftCorner">Position of the top left corner of the building in the game world.</param>
/// <param name="rotation">Initial rotation of the building after it is built.</param>
/// <param name="type">Type of the building.</param>
/// <param name="player">Owner of the building.</param>
/// <param name="level">The level the building is being built in.</param>
/// <returns>Null if it is not possible to build the building there, new Building if it is possible</returns>
/// <exception cref="CreationException">Thrown when there was an exception during building creation, like missing assets or error in the plugin.</exception>
public static Building CreateNew(int id,
IntVector2 topLeftCorner,
Quaternion rotation,
BuildingType type,
IPlayer player,
ILevelManager level)
{
if (!type.CanBuild(topLeftCorner, player, level))
{
return(null);
}
var rect = new IntRect(topLeftCorner.X,
topLeftCorner.Y,
topLeftCorner.X + type.Size.X,
topLeftCorner.Y + type.Size.Y);
Vector2 center = rect.Center();
Vector3 position = new Vector3(center.X,
level.Map.GetTerrainHeightAt(center),
center.Y);
Node buildingNode;
try {
buildingNode = type.Assets.Instantiate(level, position, rotation);
}
catch (Exception e)
{
string message = $"There was an Exception while creating a new building: {e.Message}";
Urho.IO.Log.Write(LogLevel.Error, message);
throw new CreationException(message, e);
}
Building newBuilding = null;
try {
new BuildingComponentSetup().SetupComponentsOnNode(buildingNode, level);
newBuilding = new Building(id, level, rect, type, player);
buildingNode.AddComponent(newBuilding);
newBuilding.BuildingPlugin = newBuilding.BuildingType.GetNewInstancePlugin(newBuilding, level);
return(newBuilding);
}
catch (Exception e) {
if (newBuilding != null)
{
newBuilding.RemoveFromLevel();
}
else
{
buildingNode.Remove();
}
string message = $"There was an Exception while creating a new building: {e.Message}";
Urho.IO.Log.Write(LogLevel.Error, message);
throw new CreationException(message, e);
}
}
/// <summary>
/// Executes the first step of loading process.
/// </summary>
public void StartLoading()
{
if (type.ID != storedBuilding.TypeID)
{
throw new ArgumentException("Provided type is not the type of the stored building", nameof(type));
}
IntVector2 topLeftCorner = storedBuilding.Location.ToIntVector2();
var rect = new IntRect(topLeftCorner.X,
topLeftCorner.Y,
topLeftCorner.X + type.Size.X,
topLeftCorner.Y + type.Size.Y);
Vector2 center = rect.Center();
Vector3 position = new Vector3(center.X,
level.Map.GetTerrainHeightAt(center),
center.Y);
Quaternion rotation = storedBuilding.Rotation.ToQuaternion();
Node buildingNode = type.Assets.Instantiate(level, position, rotation);
new BuildingComponentSetup().SetupComponentsOnNode(buildingNode, level);
loadingBuilding = new Building(storedBuilding.Id, level, rect, type);
buildingNode.AddComponent(loadingBuilding);
loadingBuilding.BuildingPlugin = type.GetInstancePluginForLoading(loadingBuilding, level);
foreach (var defaultComponent in storedBuilding.DefaultComponents)
{
var componentLoader =
level.DefaultComponentFactory
.StartLoadingComponent(defaultComponent,
level,
loadingBuilding.BuildingPlugin);
componentLoaders.Add(componentLoader);
loadingBuilding.AddComponent(componentLoader.Component);
}
}