92 lines
2.9 KiB
C#
92 lines
2.9 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2016 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, either version 3 of
|
|
* the License, or (at your option) any later version. For more
|
|
* information, see COPYING.
|
|
*/
|
|
#endregion
|
|
|
|
using System.Collections.Generic;
|
|
using OpenRA.GameRules;
|
|
using OpenRA.Mods.Common.Traits;
|
|
using OpenRA.Traits;
|
|
|
|
namespace OpenRA.Mods.Common.Warheads
|
|
{
|
|
public class SpreadDamageWarhead : DamageWarhead, IRulesetLoaded<WeaponInfo>
|
|
{
|
|
[Desc("Range between falloff steps.")]
|
|
public readonly WDist Spread = new WDist(43);
|
|
|
|
[Desc("Extra search radius beyond maximum spread. Required to ensure damage to actors with large health radius.")]
|
|
public readonly WDist TargetExtraSearchRadius = new WDist(1536);
|
|
|
|
[Desc("Damage percentage at each range step")]
|
|
public readonly int[] Falloff = { 100, 37, 14, 5, 0 };
|
|
|
|
[Desc("Ranges at which each Falloff step is defined. Overrides Spread.")]
|
|
public WDist[] Range = null;
|
|
|
|
public void RulesetLoaded(Ruleset rules, WeaponInfo info)
|
|
{
|
|
if (Range != null)
|
|
{
|
|
if (Range.Length != 1 && Range.Length != Falloff.Length)
|
|
throw new YamlException("Number of range values must be 1 or equal to the number of Falloff values.");
|
|
|
|
for (var i = 0; i < Range.Length - 1; i++)
|
|
if (Range[i] > Range[i + 1])
|
|
throw new YamlException("Range values must be specified in an increasing order.");
|
|
}
|
|
else
|
|
Range = Exts.MakeArray(Falloff.Length, i => i * Spread);
|
|
}
|
|
|
|
public override void DoImpact(WPos pos, Actor firedBy, IEnumerable<int> damageModifiers)
|
|
{
|
|
var world = firedBy.World;
|
|
|
|
if (world.LocalPlayer != null)
|
|
{
|
|
var devMode = world.LocalPlayer.PlayerActor.TraitOrDefault<DeveloperMode>();
|
|
if (devMode != null && devMode.ShowCombatGeometry)
|
|
world.WorldActor.Trait<WarheadDebugOverlay>().AddImpact(pos, Range, DebugOverlayColor);
|
|
}
|
|
|
|
// This only finds actors where the center is within the search radius,
|
|
// so we need to search beyond the maximum spread to account for actors with large health radius
|
|
var hitActors = world.FindActorsInCircle(pos, Range[Range.Length - 1] + TargetExtraSearchRadius);
|
|
|
|
foreach (var victim in hitActors)
|
|
{
|
|
var healthInfo = victim.Info.TraitInfoOrDefault<HealthInfo>();
|
|
if (healthInfo == null)
|
|
continue;
|
|
|
|
var distance = healthInfo.Shape.DistanceFromEdge(pos, victim);
|
|
var localModifiers = damageModifiers.Append(GetDamageFalloff(distance.Length));
|
|
|
|
DoImpact(victim, firedBy, localModifiers);
|
|
}
|
|
}
|
|
|
|
int GetDamageFalloff(int distance)
|
|
{
|
|
var inner = Range[0].Length;
|
|
for (var i = 1; i < Range.Length; i++)
|
|
{
|
|
var outer = Range[i].Length;
|
|
if (outer > distance)
|
|
return int2.Lerp(Falloff[i - 1], Falloff[i], distance - inner, outer - inner);
|
|
|
|
inner = outer;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
}
|