public void ClearEntity(Entity entity)
{
TraverseMap(MapAction.Remove, entity, entity.X, entity.Y);
}
private void TraverseMap(MapAction action, Entity entity, int targetX, int targetY)
{
CheckBounds(targetX, targetY);
CheckBounds(targetX + entity.Width - 1, targetY + entity.Height - 1);
List<Entity> collisions = new List<Entity>();
for (var x = targetX; x < targetX + entity.Width; x++)
{
for (var y = targetY; y < targetY + entity.Height; y++)
{
switch (action)
{
case MapAction.Check:
var mapEntity = GetEntity(x, y);
if (mapEntity != null)
{
//store all collisions and then decide what to do with them
collisions.Add(mapEntity);
}
break;
case MapAction.Add:
Rows[y][x] = entity;
break;
case MapAction.Remove:
if (Rows[y][x] == entity)
{
Rows[y][x] = null;
}
break;
}
}
}
if (collisions.Count > 0)
{
throw new CollisionException {Entities = collisions, Entity = collisions[0]};
}
}
public void AddEntity(Entity entity)
{
TraverseMap(MapAction.Check, entity, entity.X, entity.Y);
TraverseMap(MapAction.Add, entity, entity.X, entity.Y);
UpdateManager.AddEntity(entity);
}
public void MoveEntity(Entity entity, int x, int y)
{
TraverseMap(MapAction.Remove, entity, entity.X, entity.Y);
try
{
TraverseMap(MapAction.Check, entity, x, y);
TraverseMap(MapAction.Add, entity, x, y);
entity.X = x;
entity.Y = y;
}
catch (MoveNotOnMapException)
{
AddEntity(entity);
throw;
}
catch (CollisionException)
{
AddEntity(entity);
throw;
}
}
public void RemoveEntity(Entity entity)
{
UpdateManager.RemoveEntity(entity);
entity.Alive = false;
TraverseMap(MapAction.Remove, entity, entity.X, entity.Y);
}
private void AddEntityToDictionary(Entity entity)
{
if (!Entities.ContainsKey(entity.PlayerNumber))
{
Entities.Add(entity.PlayerNumber, new Dictionary<EntityType, List<Entity>>());
}
if (!Entities[entity.PlayerNumber].ContainsKey(entity.Type))
{
Entities[entity.PlayerNumber].Add(entity.Type, new List<Entity>());
}
Entities[entity.PlayerNumber][entity.Type].Add(entity);
}
public void RemoveEntity(Entity entity)
{
EntitiesKilled.Add(entity);
}
public void AddEntity(Entity entity)
{
if (EntitiesUnclassified.ContainsKey(entity.Id)) return;
EntitiesAdded.Add(entity);
}
private void RemoveEntityFromDictionary(Dictionary<int, Dictionary<EntityType, List<Entity>>> dictionary,
Entity entity)
{
if (!dictionary.ContainsKey(entity.PlayerNumber))
{
return;
}
if (!dictionary[entity.PlayerNumber].ContainsKey(entity.Type))
{
return;
}
dictionary[entity.PlayerNumber][entity.Type].Remove(entity);
}
private void TraverseMap(MapAction action, Entity entity, int targetX, int targetY)
{
CheckBounds(targetX, targetY);
CheckBounds(targetX + entity.Width - 1, targetY + entity.Height - 1);
for (var x = targetX; x < targetX + entity.Width; x++)
{
for (var y = targetY; y < targetY + entity.Height; y++)
{
switch (action)
{
case MapAction.Check:
var mapEntity = GetEntity(x, y);
if (mapEntity != null)
{
throw new CollisionException {Entity = mapEntity};
}
break;
case MapAction.Add:
Rows[y][x] = entity;
break;
case MapAction.Remove:
Rows[y][x] = null;
break;
}
}
}
}
