119 lines
2.9 KiB
C#
119 lines
2.9 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
|
|
* This file is part of OpenRA, which is free software. It is made
|
|
* available to you under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation. For more information,
|
|
* see COPYING.
|
|
*/
|
|
#endregion
|
|
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using OpenRA.Traits;
|
|
|
|
namespace OpenRA.Traits
|
|
{
|
|
public enum SubCell { FullCell, TopLeft, TopRight, Center, BottomLeft, BottomRight }
|
|
|
|
class ActorMapInfo : ITraitInfo
|
|
{
|
|
public object Create(ActorInitializer init) { return new ActorMap(init.world); }
|
|
}
|
|
|
|
public class ActorMap
|
|
{
|
|
class InfluenceNode
|
|
{
|
|
public InfluenceNode next;
|
|
public SubCell subCell;
|
|
public Actor actor;
|
|
}
|
|
|
|
InfluenceNode[,] influence;
|
|
Map map;
|
|
|
|
public ActorMap(World world)
|
|
{
|
|
map = world.Map;
|
|
influence = new InfluenceNode[world.Map.MapSize.X, world.Map.MapSize.Y];
|
|
}
|
|
|
|
public IEnumerable<Actor> GetUnitsAt(CPos a)
|
|
{
|
|
if (!map.IsInMap(a))
|
|
yield break;
|
|
|
|
for (var i = influence[a.X, a.Y]; i != null; i = i.next)
|
|
if (!i.actor.Destroyed)
|
|
yield return i.actor;
|
|
}
|
|
|
|
public IEnumerable<Actor> GetUnitsAt(CPos a, SubCell sub)
|
|
{
|
|
if (!map.IsInMap(a))
|
|
yield break;
|
|
|
|
for (var i = influence[a.X, a.Y]; i != null; i = i.next)
|
|
if (!i.actor.Destroyed && (i.subCell == sub || i.subCell == SubCell.FullCell))
|
|
yield return i.actor;
|
|
}
|
|
|
|
public bool HasFreeSubCell(CPos a)
|
|
{
|
|
if (!AnyUnitsAt(a))
|
|
return true;
|
|
|
|
return new[] { SubCell.TopLeft, SubCell.TopRight, SubCell.Center,
|
|
SubCell.BottomLeft, SubCell.BottomRight }.Any(b => !AnyUnitsAt(a,b));
|
|
}
|
|
|
|
public SubCell? FreeSubCell(CPos a)
|
|
{
|
|
if (!HasFreeSubCell(a))
|
|
return null;
|
|
|
|
return new[] { SubCell.TopLeft, SubCell.TopRight, SubCell.Center,
|
|
SubCell.BottomLeft, SubCell.BottomRight }.First(b => !AnyUnitsAt(a,b));
|
|
}
|
|
|
|
|
|
public bool AnyUnitsAt(CPos a)
|
|
{
|
|
return influence[a.X, a.Y] != null;
|
|
}
|
|
|
|
public bool AnyUnitsAt(CPos a, SubCell sub)
|
|
{
|
|
for (var i = influence[a.X, a.Y]; i != null; i = i.next)
|
|
if (i.subCell == sub || i.subCell == SubCell.FullCell)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
public void AddInfluence(Actor self, IOccupySpace ios)
|
|
{
|
|
foreach (var c in ios.OccupiedCells())
|
|
influence[c.First.X, c.First.Y] = new InfluenceNode { next = influence[c.First.X, c.First.Y], subCell = c.Second, actor = self };
|
|
}
|
|
|
|
public void RemoveInfluence(Actor self, IOccupySpace ios)
|
|
{
|
|
foreach (var c in ios.OccupiedCells())
|
|
RemoveInfluenceInner(ref influence[c.First.X, c.First.Y], self);
|
|
}
|
|
|
|
void RemoveInfluenceInner(ref InfluenceNode influenceNode, Actor toRemove)
|
|
{
|
|
if (influenceNode == null)
|
|
return;
|
|
else if (influenceNode.actor == toRemove)
|
|
influenceNode = influenceNode.next;
|
|
|
|
if (influenceNode != null)
|
|
RemoveInfluenceInner(ref influenceNode.next, toRemove);
|
|
}
|
|
}
|
|
}
|