Bullet impact effects (#9530)

Content.Client/Projectiles/ProjectileSystem.cs

@@ -0,0 +1,61 @@
+using Content.Shared.Projectiles;
+using Content.Shared.Spawners.Components;
+using Content.Shared.Weapons.Ranged.Systems;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameStates;
+
+namespace Content.Client.Projectiles;
+
+public sealed class ProjectileSystem : SharedProjectileSystem
+{
+    [Dependency] private readonly AnimationPlayerSystem _player = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<ProjectileComponent, ComponentHandleState>(OnHandleState);
+        SubscribeNetworkEvent<ImpactEffectEvent>(OnProjectileImpact);
+    }
+
+    private void OnProjectileImpact(ImpactEffectEvent ev)
+    {
+        var ent = Spawn(ev.Prototype, ev.Coordinates);
+
+        if (TryComp<SpriteComponent>(ent, out var sprite))
+        {
+            sprite[EffectLayers.Unshaded].AutoAnimated = false;
+            sprite.LayerMapTryGet(EffectLayers.Unshaded, out var layer);
+            var state = sprite.LayerGetState(layer);
+            var lifetime = 0.5f;
+
+            if (TryComp<TimedDespawnComponent>(ent, out var despawn))
+                lifetime = despawn.Lifetime;
+
+            var anim = new Animation()
+            {
+                Length = TimeSpan.FromSeconds(lifetime),
+                AnimationTracks =
+                {
+                    new AnimationTrackSpriteFlick()
+                    {
+                        LayerKey = EffectLayers.Unshaded,
+                        KeyFrames =
+                        {
+                            new AnimationTrackSpriteFlick.KeyFrame(state.Name, 0f),
+                        }
+                    }
+                }
+            };
+
+            _player.Play(ent, anim, "impact-effect");
+        }
+    }
+
+    private void OnHandleState(EntityUid uid, ProjectileComponent component, ref ComponentHandleState args)
+    {
+        if (args.Current is not ProjectileComponentState state) return;
+        component.Shooter = state.Shooter;
+        component.IgnoreShooter = state.IgnoreShooter;
+    }
+}