Explosions and Grenades, Triggers, OnDestroy, OnExAct, Fueltanks and destructible tables (#247)

* initial explosiveComponent

* remove garbagee

* assets

* tile mass deletion baby

* grenades

* tweaks

* Update Content.Server/GameObjects/Components/Explosion/ExplosiveComponent.cs

Co-Authored-By: Pieter-Jan Briers <pieterjan.briers@gmail.com>

* Ex_act based on damage, fixes and tweaks

* One finishing touch

Done the most cringe way

* ex_act explosions, tables are destructible now

also adds fuel tanks

* adds ex_act to mobs

Content.Client/GameObjects/Components/Trigger/TimerTriggerVisualizer2D.cs

@@ -0,0 +1,76 @@
+using System;
+using Content.Shared.GameObjects.Components.Triggers;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Client.GameObjects.Components.Animations;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Doors
+{
+    public class TimerTriggerVisualizer2D : AppearanceVisualizer
+    {
+        private const string AnimationKey = "priming_animation";
+
+        private Animation PrimingAnimation;
+
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            var countdownSound = node.GetNode("countdown_sound").AsString();
+
+
+            PrimingAnimation = new Animation { Length = TimeSpan.MaxValue };
+            {
+                var flick = new AnimationTrackSpriteFlick();
+                PrimingAnimation.AnimationTracks.Add(flick);
+                flick.LayerKey = TriggerVisualLayers.Base;
+                flick.KeyFrames.Add(new AnimationTrackSpriteFlick.KeyFrame("primed", 0f));
+
+                var sound = new AnimationTrackPlaySound();
+                PrimingAnimation.AnimationTracks.Add(sound);
+                sound.KeyFrames.Add(new AnimationTrackPlaySound.KeyFrame(countdownSound, 0));
+            }
+        }
+
+        public override void InitializeEntity(IEntity entity)
+        {
+            if (!entity.HasComponent<AnimationPlayerComponent>())
+            {
+                entity.AddComponent<AnimationPlayerComponent>();
+            }
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            var sprite = component.Owner.GetComponent<ISpriteComponent>();
+            var animPlayer = component.Owner.GetComponent<AnimationPlayerComponent>();
+            if (!component.TryGetData(TriggerVisuals.VisualState, out TriggerVisualState state))
+            {
+                state = TriggerVisualState.Unprimed;
+            }
+
+            switch (state)
+            {
+                case TriggerVisualState.Primed:
+                    if (!animPlayer.HasRunningAnimation(AnimationKey))
+                    {
+                        animPlayer.Play(PrimingAnimation, AnimationKey);
+                    }
+                    break;
+                case TriggerVisualState.Unprimed:
+                    sprite.LayerSetState(0, "icon");
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+    }
+    public enum TriggerVisualLayers
+    {
+        Base
+    }
+}

Content.Server/Content.Server.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\RobustToolbox\MSBuild\Robust.Properties.targets" />
   <PropertyGroup>
     <TargetFramework>net472</TargetFramework>

Content.Server/EntryPoint.cs

@@ -55,6 +55,8 @@ using Content.Server.Interfaces.GameObjects.Components.Movement;
 using Content.Server.GameObjects.Components.Research;
 using Content.Shared.GameObjects.Components.Research;
 using Robust.Shared.Interfaces.Log;
+using Content.Server.GameObjects.Components.Explosive;
+using Content.Server.GameObjects.Components.Triggers;
 
 namespace Content.Server
 {
@@ -178,6 +180,9 @@ namespace Content.Server
 
             factory.Register<CatwalkComponent>();
 
+            factory.Register<ExplosiveComponent>();
+            factory.Register<OnUseTimerTriggerComponent>();
+
             factory.Register<FootstepModifierComponent>();
             factory.Register<EmitSoundOnUseComponent>();
 

Content.Server/GameObjects/Components/Damage/DamageThreshold.cs

@@ -50,11 +50,13 @@ namespace Content.Server.GameObjects
     {
         public DamageThreshold DamageThreshold { get; }
         public bool Passed { get; }
+        public int ExcessDamage { get; }
 
-        public DamageThresholdPassedEventArgs(DamageThreshold threshold, bool passed)
+        public DamageThresholdPassedEventArgs(DamageThreshold threshold, bool passed, int excess)
         {
             DamageThreshold = threshold;
             Passed = passed;
+            ExcessDamage = excess;
         }
     }
 }

Content.Server/GameObjects/Components/Damage/DamageableComponent.cs

@@ -123,7 +123,13 @@ namespace Content.Server.GameObjects
                 var value = threshold.Value;
                 if (((value * changeSign) > (oldValue * changeSign)) && ((value * changeSign) <= (_currentDamage[damageType] * changeSign)))
                 {
-                    var args = new DamageThresholdPassedEventArgs(threshold, (changeSign > 0));
+                    var excessDamage = change - value;
+                    var typeOfDamage = damageType;
+                    if (change - value < 0)
+                    {
+                        excessDamage = 0;
+                    }
+                    var args = new DamageThresholdPassedEventArgs(threshold, (changeSign > 0), excessDamage);
                     DamageThresholdPassed?.Invoke(this, args);
                 }
             }

Content.Server/GameObjects/Components/Damage/DestructibleComponent.cs

@@ -1,21 +1,27 @@
 using System;
 using System.Collections.Generic;
 using Robust.Shared.GameObjects;
-using Robust.Shared.Log;
-using Robust.Shared.Utility;
-using YamlDotNet.RepresentationModel;
-using Content.Server.Interfaces;
-using Content.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using Content.Server.Interfaces;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.GameObjects;
 
 namespace Content.Server.GameObjects.Components.Destructible
 {
     /// <summary>
     /// Deletes the entity once a certain damage threshold has been reached.
     /// </summary>
-    public class DestructibleComponent : Component, IOnDamageBehavior
+    public class DestructibleComponent : Component, IOnDamageBehavior, IDestroyAct, IExAct
     {
+        #pragma warning disable 649
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+        #pragma warning restore 649
+
         /// <inheritdoc />
         public override string Name => "Destructible";
 
@@ -28,16 +34,24 @@ namespace Content.Server.GameObjects.Components.Destructible
 
         public DamageType damageType = DamageType.Total;
         public int damageValue = 0;
-        public string spawnOnDestroy = "SteelSheet";
+        public string spawnOnDestroy = "";
         public bool destroyed = false;
 
+        ActSystem _actSystem;
+
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
 
             serializer.DataField(ref damageValue, "thresholdvalue", 100);
             serializer.DataField(ref damageType, "thresholdtype", DamageType.Total);
-            serializer.DataField(ref spawnOnDestroy, "spawnondestroy", "SteelSheet");
+            serializer.DataField(ref spawnOnDestroy, "spawnondestroy", "");
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            _actSystem = _entitySystemManager.GetEntitySystem<ActSystem>();
         }
 
         /// <inheritdoc />
@@ -53,9 +67,36 @@ namespace Content.Server.GameObjects.Components.Destructible
             if (e.Passed && e.DamageThreshold == Threshold && destroyed == false)
             {
                 destroyed = true;
-                var wreck = Owner.EntityManager.SpawnEntity(spawnOnDestroy);
-                wreck.Transform.GridPosition = Owner.Transform.GridPosition;
-                Owner.EntityManager.DeleteEntity(Owner);
+                _actSystem.HandleDestruction(Owner, true);
+            }
+
+        }
+
+        void IExAct.OnExplosion(ExplosionEventArgs eventArgs)
+        {
+            var prob = new Random();
+            switch (eventArgs.Severity)
+            {
+                case ExplosionSeverity.Destruction:
+                    _actSystem.HandleDestruction(Owner, false);
+                    break;
+                case ExplosionSeverity.Heavy:
+                    _actSystem.HandleDestruction(Owner, true);
+                    break;
+                case ExplosionSeverity.Light:
+                    if (RandomExtensions.Prob(prob, 40))
+                        _actSystem.HandleDestruction(Owner, true);
+                    break;
+            }
+
+        }
+
+
+        void IDestroyAct.OnDestroy(DestructionEventArgs eventArgs)
+        {
+            if (!string.IsNullOrWhiteSpace(spawnOnDestroy) && eventArgs.IsSpawnWreck)
+            {
+                Owner.EntityManager.TrySpawnEntityAt(spawnOnDestroy, Owner.Transform.GridPosition, out var wreck);
             }
         }
     }

Content.Server/GameObjects/Components/Explosion/ExplosiveComponent.cs

@@ -0,0 +1,147 @@
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Shared.GameObjects.EntitySystemMessages;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.Timing;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.GameObjects;
+using Content.Shared.Maps;
+
+namespace Content.Server.GameObjects.Components.Explosive
+{
+    public class ExplosiveComponent : Component, ITimerTrigger, IDestroyAct
+    {
+#pragma warning disable 649        
+        [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager;
+        [Dependency] private readonly IMapManager _mapManager;
+        [Dependency] private readonly IServerEntityManager _serverEntityManager;
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+#pragma warning restore 649
+
+        public override string Name => "Explosive";
+
+        public int DevastationRange = 0;
+        public int HeavyImpactRange = 0;
+        public int LightImpactRange = 0;
+        public int FlashRange = 0;
+
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref DevastationRange, "devastationRange", 0);
+            serializer.DataField(ref HeavyImpactRange, "heavyImpactRange", 0);
+            serializer.DataField(ref LightImpactRange, "lightImpactRange", 0);
+            serializer.DataField(ref FlashRange, "flashRange", 0);
+        }
+
+        private bool Explosion()
+        {
+            var maxRange = MathHelper.Max(DevastationRange, HeavyImpactRange, LightImpactRange, 0f);
+            //Entity damage calculation
+            var entitiesAll = _serverEntityManager.GetEntitiesInRange(Owner.Transform.GridPosition, maxRange).ToList();
+
+            foreach (var entity in entitiesAll)
+            {
+                Owner.Delete();
+                if (entity == Owner)
+                    continue;
+                if (!entity.Transform.IsMapTransform)
+                    continue;
+                var distanceFromEntity = (int)entity.Transform.GridPosition.Distance(_mapManager, Owner.Transform.GridPosition);
+                var exAct = _entitySystemManager.GetEntitySystem<ActSystem>();
+                var severity = ExplosionSeverity.Destruction;
+                if (distanceFromEntity < DevastationRange)
+                {
+                    severity = ExplosionSeverity.Destruction;
+                } 
+                else if (distanceFromEntity < HeavyImpactRange)
+                {
+                    severity = ExplosionSeverity.Heavy;
+                }
+                else if (distanceFromEntity < LightImpactRange)
+                {
+                    severity = ExplosionSeverity.Light;
+                }
+                else
+                {
+                    continue;
+                }
+                exAct.HandleExplosion(Owner, entity, severity);
+            }
+
+            //Tile damage calculation mockup
+            //TODO: make it into some sort of actual damage component or whatever the boys think is appropriate
+            var mapGrid = _mapManager.GetGrid(Owner.Transform.GridPosition.GridID);
+            var circle = new Circle(Owner.Transform.GridPosition.Position, maxRange);
+            var tiles = mapGrid.GetTilesIntersecting(circle);
+            foreach (var tile in tiles)
+            {
+                var tileLoc = mapGrid.GridTileToLocal(tile.GridIndices);
+                var tileDef = (ContentTileDefinition)_tileDefinitionManager[tile.Tile.TypeId];
+                var distanceFromTile = (int)tileLoc.Distance(_mapManager, Owner.Transform.GridPosition);
+                if (!string.IsNullOrWhiteSpace(tileDef.SubFloor)) {
+                    if (distanceFromTile < DevastationRange)
+                        mapGrid.SetTile(tileLoc, new Tile(_tileDefinitionManager["space"].TileId));
+                    if (distanceFromTile < HeavyImpactRange)
+                    {
+                        if (new Random().Prob(80))
+                        {
+                            mapGrid.SetTile(tileLoc, new Tile(_tileDefinitionManager[tileDef.SubFloor].TileId));
+                        }
+                        else
+                        {
+                            mapGrid.SetTile(tileLoc, new Tile(_tileDefinitionManager["space"].TileId));
+                        }
+                    }
+                    if (distanceFromTile < LightImpactRange)
+                    {
+                        if (new Random().Prob(50))
+                        {
+                            mapGrid.SetTile(tileLoc, new Tile(_tileDefinitionManager[tileDef.SubFloor].TileId));
+                        }
+                    }
+                }
+            }
+
+            //Effects and sounds
+            var time = IoCManager.Resolve<IGameTiming>().CurTime;
+            var message = new EffectSystemMessage
+            {
+                EffectSprite = "Effects/explosion.png",
+                Born = time,
+                DeathTime = time + TimeSpan.FromSeconds(5),
+                Size = new Vector2(FlashRange / 2, FlashRange / 2),
+                Coordinates = Owner.Transform.GridPosition,
+                //Rotated from east facing
+                Rotation = 0f,
+                ColorDelta = new Vector4(0, 0, 0, -1500f),
+                Color = Vector4.Multiply(new Vector4(255, 255, 255, 750), 0.5f),
+                Shaded = false
+            };
+            _entitySystemManager.GetEntitySystem<EffectSystem>().CreateParticle(message);
+            _entitySystemManager.GetEntitySystem<AudioSystem>().Play("/Audio/effects/explosion.ogg", Owner);
+            return true;
+        }
+
+        bool ITimerTrigger.Trigger(TimerTriggerEventArgs eventArgs)
+        {
+            return Explosion();
+        }
+
+        void IDestroyAct.OnDestroy(DestructionEventArgs eventArgs)
+        {
+            Explosion();
+        }
+    }
+}

Content.Server/GameObjects/Components/Items/Storage/ServerStorageComponent.cs

@@ -1,4 +1,5 @@
-using Content.Server.GameObjects.EntitySystems;
+using System.Linq;
+using Content.Server.GameObjects.EntitySystems;
 using Content.Shared.GameObjects.Components.Storage;
 using Robust.Server.GameObjects;
 using Robust.Server.GameObjects.Components.Container;
@@ -26,7 +27,7 @@ namespace Content.Server.GameObjects
     /// <summary>
     /// Storage component for containing entities within this one, matches a UI on the client which shows stored entities
     /// </summary>
-    public class ServerStorageComponent : SharedStorageComponent, IAttackBy, IUse, IActivate, IStorageComponent
+    public class ServerStorageComponent : SharedStorageComponent, IAttackBy, IUse, IActivate, IStorageComponent, IDestroyAct
     {
 #pragma warning disable 649
         [Dependency] private readonly IMapManager _mapManager;
@@ -340,5 +341,14 @@ namespace Content.Server.GameObjects
 
             _storageInitialCalculated = true;
         }
+
+        void IDestroyAct.OnDestroy(DestructionEventArgs eventArgs)
+        {
+            var storedEntities = storage.ContainedEntities.ToList();
+            foreach (var entity in storedEntities)
+            {
+                Remove(entity);
+            }
+        }
     }
 }

Content.Server/GameObjects/Components/Mobs/SpeciesComponent.cs

@@ -12,7 +12,7 @@ using Robust.Shared.Serialization;
 
 namespace Content.Server.GameObjects
 {
-    public class SpeciesComponent : SharedSpeciesComponent, IActionBlocker, IOnDamageBehavior
+    public class SpeciesComponent : SharedSpeciesComponent, IActionBlocker, IOnDamageBehavior, IExAct
     {
         /// <summary>
         /// Damagestates are reached by reaching a certain damage threshold, they will block actions after being reached
@@ -115,6 +115,28 @@ namespace Content.Server.GameObjects
 
             Owner.RaiseEvent(new MobDamageStateChangedMessage(this));
         }
+
+        void IExAct.OnExplosion(ExplosionEventArgs eventArgs)
+        {
+            var burnDamage = 0;
+            var bruteDamage = 0;
+            switch(eventArgs.Severity)
+            {
+                case ExplosionSeverity.Destruction:
+                    bruteDamage += 250;
+                    burnDamage += 250;
+                    break;
+                case ExplosionSeverity.Heavy:
+                    bruteDamage += 60;
+                    burnDamage += 60;
+                    break;
+                case ExplosionSeverity.Light:
+                    bruteDamage += 30;
+                    break;
+            }
+            Owner.GetComponent<DamageableComponent>().TakeDamage(Shared.GameObjects.DamageType.Brute, bruteDamage);
+            Owner.GetComponent<DamageableComponent>().TakeDamage(Shared.GameObjects.DamageType.Heat, burnDamage);
+        }
     }
 
     /// <summary>

Content.Server/GameObjects/Components/Trigger/TimerTrigger/OnUseTimerTriggerComponent.cs

@@ -0,0 +1,44 @@
+using System;
+using Robust.Server.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Serialization;
+using Robust.Shared.GameObjects;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.GameObjects.Components.Triggers;
+
+namespace Content.Server.GameObjects.Components.Triggers
+{
+    public class OnUseTimerTriggerComponent : Component, IUse
+    {
+        #pragma warning disable 649
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+#pragma warning restore 649
+
+        public override string Name => "OnUseTimerTrigger";
+
+        private float _delay = 0f;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref _delay, "delay", 0f);
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize(); 
+        }
+
+        bool IUse.UseEntity(UseEntityEventArgs eventArgs)
+        {
+            var triggerSystem = _entitySystemManager.GetEntitySystem<TriggerSystem>();
+            if (Owner.TryGetComponent<AppearanceComponent>(out var appearance)) {
+                appearance.SetData(TriggerVisuals.VisualState, TriggerVisualState.Primed);
+            }
+            triggerSystem.HandleTimerTrigger(TimeSpan.FromSeconds(_delay), eventArgs.User, Owner);
+            return true;
+        }
+    }
+}

Content.Server/GameObjects/EntitySystems/ActSystem.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Linq;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Content.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    /// <summary>
+    /// This interface gives components behavior on getting destoyed.
+    /// </summary>
+    public interface IDestroyAct
+    {
+        /// <summary>
+        /// Called when object is destroyed
+        /// </summary>
+        void OnDestroy(DestructionEventArgs eventArgs);
+    }
+
+    public class DestructionEventArgs : EventArgs
+    {
+        public IEntity Owner { get; set; }
+        public bool IsSpawnWreck { get; set; }
+    }
+
+    public interface IExAct
+    {
+        /// <summary>
+        /// Called when explosion reaches the entity
+        /// </summary>
+        void OnExplosion(ExplosionEventArgs eventArgs);
+    }
+
+    public class ExplosionEventArgs : EventArgs
+    {
+        public IEntity Source { get; set; }
+        public IEntity Target { get; set; }
+        public ExplosionSeverity Severity { get; set; }
+    }
+
+    [UsedImplicitly]
+    public sealed class ActSystem : EntitySystem
+    {
+        public void HandleDestruction(IEntity owner, bool isWreck)
+        {
+            var eventArgs = new DestructionEventArgs
+            {
+                Owner = owner,
+                IsSpawnWreck = isWreck
+            };
+            var destroyActs = owner.GetAllComponents<IDestroyAct>().ToList();
+
+            foreach (var destroyAct in destroyActs)
+            {
+                destroyAct.OnDestroy(eventArgs);
+            }
+            owner.Delete();
+        }
+
+        public void HandleExplosion(IEntity source, IEntity target, ExplosionSeverity severity)
+        {
+            var eventArgs = new ExplosionEventArgs
+            {
+                Source = source,
+                Target = target,
+                Severity = severity
+            };
+            var exActs = target.GetAllComponents<IExAct>().ToList();
+
+            foreach (var exAct in exActs)
+            {
+                exAct.OnExplosion(eventArgs);
+            }
+        }
+    }
+    public enum ExplosionSeverity
+    {
+        Destruction,
+        Heavy,
+        Light,
+    }
+}

Content.Server/GameObjects/EntitySystems/TriggerSystem.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Linq;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Timers;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    /// <summary>
+    /// This interface gives components behavior when being "triggered" by timer or other conditions
+    /// </summary>
+    public interface ITimerTrigger
+    {
+        /// <summary>
+        /// Called when one object is triggering some event
+        /// </summary>
+        bool Trigger(TimerTriggerEventArgs eventArgs);
+    }
+
+    public class TimerTriggerEventArgs : EventArgs
+    {
+        public IEntity User { get; set; }
+        public IEntity Source { get; set; }
+    }
+
+    [UsedImplicitly]
+    public sealed class TriggerSystem : EntitySystem
+    {
+        public void HandleTimerTrigger(TimeSpan delay, IEntity user, IEntity trigger)
+        {
+
+            Timer.Spawn(delay, () =>
+            {
+                var timerTriggerEventArgs = new TimerTriggerEventArgs
+                {
+                    User = user,
+                    Source = trigger
+                };
+                var timerTriggers = trigger.GetAllComponents<ITimerTrigger>().ToList();
+
+                foreach (var timerTrigger in timerTriggers)
+                {
+                    if (timerTrigger.Trigger(timerTriggerEventArgs))
+                    {
+                        // If an IOnTimerTrigger returns a status completion we finish our trigger
+                        return;
+                    }
+                }
+            });
+        }
+    }
+}

Content.Shared/Content.Shared.csproj

@@ -18,4 +18,7 @@
     <ProjectReference Include="..\RobustToolbox\Robust.Shared.Maths\Robust.Shared.Maths.csproj" />
     <ProjectReference Include="..\RobustToolbox\Robust.Shared\Robust.Shared.csproj" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="GameObjects\Components\Trigger\" />
+  </ItemGroup>
 </Project>

Content.Shared/GameObjects/Components/Trigger/TriggerVisuals.cs

@@ -0,0 +1,20 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Triggers
+{
+    [NetSerializable]
+    [Serializable]
+    public enum TriggerVisuals
+    {
+        VisualState,
+    }
+
+    [NetSerializable]
+    [Serializable]
+    public enum TriggerVisualState
+    {
+        Primed,
+        Unprimed,
+    }
+}

Content.Shared/Maps/ContentTileDefinition.cs

@@ -17,6 +17,7 @@ namespace Content.Shared.Maps
         public string DisplayName { get; private set; }
         public string SpriteName { get; private set; }
         public bool IsSubFloor { get; private set; }
+        public string SubFloor { get; private set; }
         public bool CanCrowbar { get; private set; }
         public string FootstepSounds { get; private set; }
         public float Friction { get; set; }
@@ -36,6 +37,10 @@ namespace Content.Shared.Maps
             {
                 IsSubFloor = node.AsBool();
             }
+            if (mapping.TryGetNode("subfloor", out var another_node))
+            {
+                SubFloor = another_node.AsString();
+            }
 
             if (mapping.TryGetNode("can_crowbar", out node))
             {

Resources/Prototypes/Entities/Container.yml

@@ -19,6 +19,43 @@
   - type: Storage
     Capacity: 60
     
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 100
+
+  placement:
+    snap:
+    - Wall
+
+- type: entity
+  id: weldtank
+  name: Fueltank
+  description: A storage tank containing welding fuel.
+  components:
+  - type: Sprite
+    texture: Buildings/weldtank.png
+
+  - type: Icon
+    texture: Buildings/weldtank.png
+
+  - type: Clickable
+  - type: BoundingBox
+    aabb: "-0.5,-0.25,0.5,0.25"
+  - type: Collidable
+    mask: 3
+    IsScrapingFloor: true
+  - type: Physics
+    mass: 15
+    Anchored: false
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 10
+  - type: Explosive
+    devastationRange: 1
+    heavyImpactRange: 2
+    lightImpactRange: 4
+    flashRange: 5
+
   placement:
     snap:
     - Wall

Resources/Prototypes/Entities/Explosives.yml

@@ -0,0 +1,74 @@
+- type: entity
+  name: Explosive Grenade
+  description: Grenade that creates small devastating explosion
+  parent: BaseItem
+  id: ExGrenade
+  components:
+  - type: Sprite
+    sprite: Objects/grenade.rsi
+    layers:
+    - state: icon
+      map: ["enum.TriggerVisualLayers.Base"]
+
+  - type: Icon
+    sprite: Objects/grenade.rsi
+    state: icon
+
+  - type: Item
+    Size: 5
+
+  - type: OnUseTimerTrigger
+    delay: 5
+
+  - type: Explosive
+    devastationRange: 1
+    heavyImpactRange: 3
+    lightImpactRange: 5
+    flashRange: 7
+
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 10
+    
+  - type: Appearance
+    visuals:
+    - type: TimerTriggerVisualizer2D
+      countdown_sound: /Audio/effects/countdown.ogg
+
+- type: entity
+  name: Syndicate Minibomb
+  description: A syndicate manufactured explosive used to sow destruction and chaos.
+  parent: BaseItem
+  id: SyndieMiniBomb
+  components:
+  - type: Sprite
+    sprite: Objects/syndgrenade.rsi
+    layers:
+    - state: icon
+      map: ["enum.TriggerVisualLayers.Base"]
+
+  - type: Icon
+    sprite: Objects/syndgrenade.rsi
+    state: icon
+
+  - type: Item
+    Size: 5
+
+  - type: OnUseTimerTrigger
+    delay: 5
+
+  - type: Explosive
+    devastationRange: 3
+    heavyImpactRange: 5
+    lightImpactRange: 7
+    flashRange: 10
+
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 10
+
+  - type: Appearance
+    visuals:
+    - type: TimerTriggerVisualizer2D
+      countdown_sound: /Audio/effects/countdown.ogg
+

Resources/Prototypes/Entities/Items.yml

@@ -136,3 +136,21 @@
   - type: Sound
   - type: EmitSoundOnUse
     sound: /Audio/items/bikehorn.ogg
+
+- type: entity
+  name: Table Parts
+  parent: BaseItem
+  id: TableParts
+  description: Parts of a table.
+  components: 
+  - type: Sprite
+    sprite: Objects/table_parts.rsi
+    state: icon
+
+  - type: Icon
+    sprite: Objects/table_parts.rsi
+    state: icon
+
+  - type: Item
+    Size: 25
+    sprite: Objects/table_parts.rsi

Resources/Prototypes/Entities/closet.yml

@@ -25,6 +25,9 @@
     Anchored: false
   - type: EntityStorage
   - type: PlaceableSurface
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 100
   - type: Appearance
     visuals:
     - type: StorageVisualizer2D

Resources/Prototypes/Entities/table.yml

@@ -21,3 +21,8 @@
   - type: IconSmooth
     key: tables
     base: solid_
+
+  - type: Damageable
+  - type: Destructible
+    thresholdvalue: 50
+    spawnondestroy: TableParts

Resources/Prototypes/Tiles/floors.yml

@@ -6,6 +6,7 @@
   can_crowbar: true
   footstep_sounds: footstep_floor
   friction: 0.35
+  subfloor: plating
 
 - type: tile
   name: floor_white
@@ -15,6 +16,7 @@
   can_crowbar: true
   footstep_sounds: footstep_floor
   friction: 0.1
+  subfloor: underplating
 
 - type: tile
   name: floor_techmaint
@@ -24,3 +26,4 @@
   can_crowbar: true
   footstep_sounds: footstep_floor
   friction: 0.5
+  subfloor: underplating

Resources/Prototypes/Tiles/plating.yml

@@ -5,6 +5,7 @@
   is_subfloor: true
   footstep_sounds: footstep_plating
   friction: 0.5
+  subfloor: space
 
 - type: tile
   name: underplating

Resources/Textures/Effects/explosion.rsi/meta.json

@@ -0,0 +1,28 @@
+{
+    "version": 1,
+    "size": {
+        "x": 96,
+        "y": 96
+    },
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken from https://github.com/vgstation-coders/vgstation13/icons/effects/96x96.dmi at commit 96d69b71a3a0549b4b668c0a095306580bd157c0",
+    "states": [
+        {
+            "name": "explosion",
+            "select": [],
+            "flags": {},
+            "directions": 1,
+            "delays": [
+                [
+                    0.2,
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.1
+                ]
+            ]
+        }
+    ]
+}

Resources/Textures/Objects/grenade.rsi/meta.json

@@ -0,0 +1,25 @@
+{
+    "version": 1,
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken from https://github.com/vgstation-coders/vgstation13/icons/obj/grenade.dmi at commit 8c96d52deed1eeea28a16334eea549369d7f9974",
+    "states": [
+        {
+            "name": "icon",
+            "directions": 1,
+            "delays": [
+                [1.0]
+            ]
+        },
+        {
+            "name": "primed",
+            "directions": 1,
+            "delays": [
+                [0.2, 0.2]
+            ]
+        }
+    ]
+}

Resources/Textures/Objects/rack_parts.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "copyright": "Taken from https://github.com/vgstation-coders/vgstation13 at commit 125c975f1b3bf9826b37029e9ab5a5f89e975a7e", "states": [{"name": "icon", "directions": 1, "delays": [[1.0]]}, {"name": "inhand-left", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "inhand-right", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}

Resources/Textures/Objects/syndgrenade.rsi/meta.json

@@ -0,0 +1,25 @@
+{
+    "version": 1,
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken from https://github.com/vgstation-coders/vgstation13/icons/obj/grenade.dmi at commit 8c96d52deed1eeea28a16334eea549369d7f9974",
+    "states": [
+        {
+            "name": "icon",
+            "directions": 1,
+            "delays": [
+                [1.0]
+            ]
+        },
+        {
+            "name": "primed",
+            "directions": 1,
+            "delays": [
+                [0.2, 0.2, 0.2]
+            ]
+        }
+    ]
+}

Resources/Textures/Objects/table_parts.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "copyright": "Taken from https://github.com/vgstation-coders/vgstation13 at commit 125c975f1b3bf9826b37029e9ab5a5f89e975a7e", "states": [{"name": "icon", "directions": 1, "delays": [[1.0]]}, {"name": "inhand-left", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "inhand-right", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}