131 lines
3.5 KiB
C#
Executable File
131 lines
3.5 KiB
C#
Executable File
#region Copyright & License Information
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/*
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* Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see LICENSE.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.Effects;
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using OpenRA.GameRules;
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using OpenRA.Graphics;
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using OpenRA.Traits;
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namespace OpenRA.Mods.RA.Effects
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{
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class MissileInfo : IProjectileInfo
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{
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public readonly int Speed = 1;
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public readonly int Arm = 0;
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public readonly bool High = false;
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public readonly bool Shadow = true;
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public readonly bool Proximity = false;
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public readonly string Trail = null;
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public readonly float Inaccuracy = 0;
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public readonly string Image = null;
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public readonly int ROT = 5;
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public readonly int RangeLimit = 0;
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public readonly bool TurboBoost = false;
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public IEffect Create(ProjectileArgs args) { return new Missile( this, args ); }
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}
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class Missile : IEffect
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{
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readonly MissileInfo Info;
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readonly ProjectileArgs Args;
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int2 offset;
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float2 Pos;
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readonly Animation anim;
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int Facing;
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int t;
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int Altitude;
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public Missile(MissileInfo info, ProjectileArgs args)
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{
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Info = info;
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Args = args;
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Pos = Args.src;
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Altitude = Args.srcAltitude;
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Facing = Args.facing;
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if (info.Inaccuracy > 0)
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offset = (info.Inaccuracy * args.firedBy.World.SharedRandom.Gauss2D(2)).ToInt2();
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if (Info.Image != null)
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{
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anim = new Animation(Info.Image, () => Facing);
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anim.PlayRepeating("idle");
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}
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}
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const int MissileCloseEnough = 7;
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const float Scale = .2f;
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public void Tick( World world )
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{
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t += 40;
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var targetPosition = Args.target.CenterLocation + offset;
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var targetAltitude = 0;
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if (Args.target.IsValid && Args.target.IsActor && Args.target.Actor.HasTrait<IMove>())
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targetAltitude = Args.target.Actor.Trait<IMove>().Altitude;
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Altitude += Math.Sign(targetAltitude - Altitude);
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Facing = Traits.Util.TickFacing(Facing,
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Traits.Util.GetFacing(targetPosition - Pos, Facing),
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Info.ROT);
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anim.Tick();
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var dist = targetPosition - Pos;
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if (dist.LengthSquared < MissileCloseEnough * MissileCloseEnough || !Args.target.IsValid )
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Explode(world);
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var speed = Scale * Info.Speed * ((targetAltitude > 0 && Info.TurboBoost) ? 1.5f : 1f);
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var angle = Facing / 128f * Math.PI;
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var move = speed * -float2.FromAngle((float)angle);
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Pos += move;
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if (Info.Trail != null)
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world.AddFrameEndTask(w => w.Add(
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new Smoke(w, (Pos - 1.5f * move - new int2(0, Altitude)).ToInt2(), Info.Trail)));
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if (Info.RangeLimit != 0 && t > Info.RangeLimit * 40)
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Explode(world);
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if (!Info.High) // check for hitting a wall
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{
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var cell = Traits.Util.CellContaining(Pos);
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if (world.WorldActor.Trait<UnitInfluence>().GetUnitsAt(cell).Any(
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a => a.HasTrait<IBlocksBullets>()))
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Explode(world);
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}
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}
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void Explode(World world)
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{
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world.AddFrameEndTask(w => w.Remove(this));
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Args.dest = Pos.ToInt2();
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if (t > Info.Arm * 40) /* don't blow up in our launcher's face! */
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Combat.DoImpacts(Args);
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}
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public IEnumerable<Renderable> Render()
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{
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yield return new Renderable(anim.Image, Pos - 0.5f * anim.Image.size - new float2(0, Altitude),
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Args.weapon.Underwater ? "shadow" : "effect", (int)Pos.Y);
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}
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}
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}
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