92 lines
2.5 KiB
C#
92 lines
2.5 KiB
C#
using System.Collections.Generic;
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using OpenRa.Game.GameRules;
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using OpenRa.Game.Graphics;
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using OpenRa.Game.Traits;
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using System;
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namespace OpenRa.Game.Effects
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{
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class Missile : IEffect
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{
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readonly Player Owner;
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readonly Actor FiredBy;
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readonly WeaponInfo Weapon;
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readonly ProjectileInfo Projectile;
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readonly WarheadInfo Warhead;
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float2 Pos;
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readonly Actor Target;
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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(string weapon, Player owner, Actor firedBy,
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int2 src, Actor target, int altitude)
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{
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Weapon = Rules.WeaponInfo[weapon];
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Projectile = Rules.ProjectileInfo[Weapon.Projectile];
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Warhead = Rules.WarheadInfo[Weapon.Warhead];
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FiredBy = firedBy;
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Owner = owner;
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Target = target;
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Pos = src.ToFloat2();
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Altitude = altitude;
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/* todo: initial facing should be turret facing, or unit facing if we're not turreted */
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Facing = Traits.Util.GetFacing( Target.CenterLocation - src.ToFloat2(), 0 );
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if (Projectile.Image != null && Projectile.Image != "none")
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{
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anim = new Animation(Projectile.Image);
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if (Projectile.Rotates)
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Traits.Util.PlayFacing(anim, "idle", () => Facing);
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else
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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 = .3f;
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public void Tick()
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{
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t += 40;
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var targetUnit = Target.traits.GetOrDefault<Unit>();
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var targetAltitude = targetUnit != null ? targetUnit.Altitude : 0;
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Altitude += Math.Sign(targetAltitude - Altitude);
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Traits.Util.TickFacing(ref Facing,
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Traits.Util.GetFacing(Target.CenterLocation - Pos, Facing),
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Projectile.ROT);
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anim.Tick();
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var dist = Target.CenterLocation - Pos;
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if (dist.LengthSquared < MissileCloseEnough * MissileCloseEnough || Target.IsDead)
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{
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Game.world.AddFrameEndTask(w => w.Remove(this));
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if (t > Projectile.Arm * 40) /* don't blow up in our launcher's face! */
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Combat.DoImpact(Pos.ToInt2(), Pos.ToInt2(), Weapon, Projectile, Warhead, FiredBy);
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return;
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}
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var move = (Scale * Weapon.Speed / dist.Length) * dist;
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Pos += move;
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if (Projectile.Animates)
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Game.world.AddFrameEndTask(w => w.Add(new Smoke((Pos - 1.5f * move - new int2( 0, Altitude )).ToInt2())));
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// todo: running out of fuel
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// todo: turbo boost vs aircraft
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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), 0);
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}
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}
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}
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