74 lines
2.1 KiB
C#
74 lines
2.1 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2015 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.Linq;
|
|
using OpenRA.Traits;
|
|
|
|
namespace OpenRA.Mods.Common.Traits
|
|
{
|
|
[RequireExplicitImplementation]
|
|
public interface IBlocksProjectiles
|
|
{
|
|
WDist BlockingHeight { get; }
|
|
}
|
|
|
|
[Desc("This actor blocks bullets and missiles with 'Blockable' property.")]
|
|
public class BlocksProjectilesInfo : UpgradableTraitInfo
|
|
{
|
|
public readonly WDist Height = WDist.FromCells(1);
|
|
|
|
public override object Create(ActorInitializer init) { return new BlocksProjectiles(init.Self, this); }
|
|
}
|
|
|
|
public class BlocksProjectiles : UpgradableTrait<BlocksProjectilesInfo>, IBlocksProjectiles
|
|
{
|
|
public BlocksProjectiles(Actor self, BlocksProjectilesInfo info)
|
|
: base(info) { }
|
|
|
|
WDist IBlocksProjectiles.BlockingHeight { get { return Info.Height; } }
|
|
|
|
public static bool AnyBlockingActorAt(World world, WPos pos)
|
|
{
|
|
var dat = world.Map.DistanceAboveTerrain(pos);
|
|
|
|
return world.ActorMap.GetActorsAt(world.Map.CellContaining(pos))
|
|
.Any(a => a.TraitsImplementing<IBlocksProjectiles>()
|
|
.Where(t => t.BlockingHeight > dat)
|
|
.Any(Exts.IsTraitEnabled));
|
|
}
|
|
|
|
public static bool AnyBlockingActorsBetween(World world, WPos start, WPos end, WDist width, WDist overscan, out WPos hit)
|
|
{
|
|
var actors = world.FindActorsOnLine(start, end, width, overscan);
|
|
var length = (end - start).Length;
|
|
|
|
foreach (var a in actors)
|
|
{
|
|
var blockers = a.TraitsImplementing<IBlocksProjectiles>()
|
|
.Where(Exts.IsTraitEnabled).ToList();
|
|
|
|
if (!blockers.Any())
|
|
continue;
|
|
|
|
var hitPos = WorldExtensions.MinimumPointLineProjection(start, end, a.CenterPosition);
|
|
var dat = world.Map.DistanceAboveTerrain(hitPos);
|
|
if ((hitPos - start).Length < length && blockers.Any(t => t.BlockingHeight > dat))
|
|
{
|
|
hit = hitPos;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
hit = WPos.Zero;
|
|
return false;
|
|
}
|
|
}
|
|
}
|