public void DestroyEntity(ECSEntity entity)
{
ECSEntityData data = this.entities.GetEntityData(entity);
var keys = data.Keys;
Type[] types = new Type[keys.Count];
int count = 0;
//TODO: improve with Type[] buffer in ECSEntityData
foreach (Type type in keys)
{
types[count++] = type;
}
for (int i = 0; i < types.Length; i++)
{
Type type = types[i];
ECSEntityIndex index = data[type];
data.Remove(type);
this.components.RemoveComponent(type, index);
this.UpdateAllEntitiesWithComponent(index, type);
}
this.entities.DestroyEntity(entity);
}
private ECSEntityIndex GetIndexByEntity <T>(int entity) where T : struct, IECSComponent
{
ECSEntityData data = this.entities[entity];
Type type = typeof(T);
ECSEntityIndex index = data[type];
return(index);
}
private void UpdateAllEntitiesWithComponent(ECSEntityIndex indexRemoved, Type type)
{
for (int i = 0; i < this.entities.Count; i++)
{
if (this.entities.HasComponent(i, type))
{
ECSEntityData data = this.entities[i];
ECSEntityIndex index = data[type];
if (index > indexRemoved)
{
index--;
data[type] = index;
}
}
}
}
