Merge branch 'master' into kitchen

Content.Server/GameObjects/Components/GUI/ServerHandsComponent.cs

@@ -151,6 +151,12 @@ namespace Content.Server.GameObjects
             return success;
         }
 
+        public void PutInHandOrDrop(ItemComponent item)
+        {
+            if (!PutInHand(item))
+                item.Owner.Transform.GridPosition = Owner.Transform.GridPosition;
+        }
+
         public bool CanPutInHand(ItemComponent item)
         {
             foreach (var hand in ActivePriorityEnumerable())

Content.Server/GameObjects/Components/Gravity/GravityGeneratorComponent.cs

@@ -0,0 +1,206 @@
+using Content.Server.GameObjects.Components.Damage;
+using Content.Server.GameObjects.Components.Interactable.Tools;
+using Content.Server.GameObjects.Components.Power;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Server.Interfaces;
+using Content.Shared.GameObjects.Components.Gravity;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Robust.Server.GameObjects;
+using Robust.Server.GameObjects.Components.UserInterface;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Server.Interfaces.GameObjects;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.GameObjects.Components.Gravity
+{
+    [RegisterComponent]
+    public class GravityGeneratorComponent: SharedGravityGeneratorComponent, IAttackBy, IBreakAct, IAttackHand
+    {
+        private BoundUserInterface _userInterface;
+
+        private PowerDeviceComponent _powerDevice;
+
+        private SpriteComponent _sprite;
+
+        private bool _switchedOn;
+
+        private bool _intact;
+
+        private GravityGeneratorStatus _status;
+
+        public bool Powered => _powerDevice.Powered;
+
+        public bool SwitchedOn => _switchedOn;
+
+        public bool Intact => _intact;
+
+        public GravityGeneratorStatus Status => _status;
+
+        public bool NeedsUpdate
+        {
+            get
+            {
+                switch (_status)
+                {
+                    case GravityGeneratorStatus.On:
+                        return !(Powered && SwitchedOn && Intact);
+                    case GravityGeneratorStatus.Off:
+                        return SwitchedOn || !(Powered && Intact);
+                    case GravityGeneratorStatus.Unpowered:
+                        return SwitchedOn || Powered || !Intact;
+                    case GravityGeneratorStatus.Broken:
+                        return SwitchedOn || Powered || Intact;
+                    default:
+                        return true; // This _should_ be unreachable
+                }
+            }
+        }
+
+        public override string Name => "GravityGenerator";
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            _userInterface = Owner.GetComponent<ServerUserInterfaceComponent>()
+                .GetBoundUserInterface(GravityGeneratorUiKey.Key);
+            _userInterface.OnReceiveMessage += HandleUIMessage;
+            _powerDevice = Owner.GetComponent<PowerDeviceComponent>();
+            _sprite = Owner.GetComponent<SpriteComponent>();
+            _switchedOn = true;
+            _intact = true;
+            _status = GravityGeneratorStatus.On;
+            UpdateState();
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref _switchedOn, "switched_on", true);
+            serializer.DataField(ref _intact, "intact", true);
+        }
+
+        bool IAttackHand.AttackHand(AttackHandEventArgs eventArgs)
+        {
+            if (!eventArgs.User.TryGetComponent<IActorComponent>(out var actor))
+                return false;
+            if (Status != GravityGeneratorStatus.Off && Status != GravityGeneratorStatus.On)
+            {
+                return false;
+            }
+            OpenUserInterface(actor.playerSession);
+            return true;
+        }
+
+        public bool AttackBy(AttackByEventArgs eventArgs)
+        {
+            if (!eventArgs.AttackWith.TryGetComponent<WelderComponent>(out var welder)) return false;
+            if (welder.TryUse(5.0f))
+            {
+                // Repair generator
+                var damagable = Owner.GetComponent<DamageableComponent>();
+                var breakable = Owner.GetComponent<BreakableComponent>();
+                damagable.HealAllDamage();
+                breakable.broken = false;
+                _intact = true;
+
+                var entitySystemManager = IoCManager.Resolve<IEntitySystemManager>();
+                var notifyManager = IoCManager.Resolve<IServerNotifyManager>();
+
+                entitySystemManager.GetEntitySystem<AudioSystem>().Play("/Audio/items/welder2.ogg", Owner);
+                notifyManager.PopupMessage(Owner, eventArgs.User, Loc.GetString("You repair the gravity generator with the welder"));
+
+                return true;
+            } else
+            {
+                return false;
+            }
+        }
+
+        public void OnBreak(BreakageEventArgs eventArgs)
+        {
+            _intact = false;
+            _switchedOn = false;
+        }
+
+        public void UpdateState()
+        {
+            if (!Intact)
+            {
+                MakeBroken();
+            } else if (!Powered)
+            {
+                MakeUnpowered();
+            } else if (!SwitchedOn)
+            {
+                MakeOff();
+            } else
+            {
+                MakeOn();
+            }
+        }
+
+        private void HandleUIMessage(ServerBoundUserInterfaceMessage message)
+        {
+            switch (message.Message)
+            {
+                case GeneratorStatusRequestMessage _:
+                    _userInterface.SetState(new GeneratorState(Status == GravityGeneratorStatus.On));
+                    break;
+                case SwitchGeneratorMessage msg:
+                    _switchedOn = msg.On;
+                    UpdateState();
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        private void OpenUserInterface(IPlayerSession playerSession)
+        {
+            _userInterface.Open(playerSession);
+        }
+
+        private void MakeBroken()
+        {
+            _status = GravityGeneratorStatus.Broken;
+            _sprite.LayerSetState(0, "broken");
+            _sprite.LayerSetVisible(1, false);
+        }
+
+        private void MakeUnpowered()
+        {
+            _status = GravityGeneratorStatus.Unpowered;
+            _sprite.LayerSetState(0, "off");
+            _sprite.LayerSetVisible(1, false);
+        }
+
+        private void MakeOff()
+        {
+            _status = GravityGeneratorStatus.Off;
+            _sprite.LayerSetState(0, "off");
+            _sprite.LayerSetVisible(1, false);
+        }
+
+        private void MakeOn()
+        {
+            _status = GravityGeneratorStatus.On;
+            _sprite.LayerSetState(0, "on");
+            _sprite.LayerSetVisible(1, true);
+        }
+    }
+
+    public enum GravityGeneratorStatus
+    {
+        Broken,
+        Unpowered,
+        Off,
+        On
+    }
+}

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

@@ -45,6 +45,8 @@ namespace Content.Server.GameObjects
         private int StorageCapacityMax = 10000;
         public HashSet<IPlayerSession> SubscribedSessions = new HashSet<IPlayerSession>();
 
+        public IReadOnlyCollection<IEntity> StoredEntities => storage.ContainedEntities;
+
         public override void Initialize()
         {
             base.Initialize();
@@ -140,7 +142,6 @@ namespace Content.Server.GameObjects
         /// <returns></returns>
         public bool AttackBy(AttackByEventArgs eventArgs)
         {
-            _ensureInitialCalculated();
             Logger.DebugS("Storage", "Storage (UID {0}) attacked by user (UID {1}) with entity (UID {2}).", Owner.Uid, eventArgs.User.Uid, eventArgs.AttackWith.Uid);
 
             if(Owner.TryGetComponent<PlaceableSurfaceComponent>(out var placeableSurfaceComponent))
@@ -363,8 +364,10 @@ namespace Content.Server.GameObjects
         /// <summary>
         /// Inserts an entity into the storage component from the players active hand.
         /// </summary>
-        private bool PlayerInsertEntity(IEntity player)
+        public bool PlayerInsertEntity(IEntity player)
         {
+            _ensureInitialCalculated();
+
             if (!player.TryGetComponent(out IHandsComponent hands) || hands.GetActiveHand == null)
                 return false;
 

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

@@ -118,9 +118,17 @@ namespace Content.Server.GameObjects.Components.Mobs
             if (!ShowExamineInfo)
                 return;
 
+            var dead = false;
+
+            if(Owner.TryGetComponent<SpeciesComponent>(out var species))
+                if (species.CurrentDamageState is DeadState)
+                    dead = true;
+
             // TODO: Use gendered pronouns depending on the entity
             if(!HasMind)
-                message.AddMarkup($"[color=red]They are totally catatonic. The stresses of life in deep-space must have been too much for them. Any recovery is unlikely.[/color]");
+                message.AddMarkup(!dead
+                    ? $"[color=red]They are totally catatonic. The stresses of life in deep-space must have been too much for them. Any recovery is unlikely.[/color]"
+                    : $"[color=purple]Their soul has departed.[/color]");
             else if(Mind.Session == null)
                 message.AddMarkup("[color=yellow]They have a blank, absent-minded stare and appears completely unresponsive to anything. They may snap out of it soon.[/color]");
         }

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

@@ -177,7 +177,7 @@ namespace Content.Server.GameObjects
 
             currentstate = threshold;
 
-            EntityEventArgs toRaise = new MobDamageStateChangedMessage(this);
+            var toRaise = new MobDamageStateChangedMessage(this);
             Owner.EntityManager.EventBus.RaiseEvent(EventSource.Local, toRaise);
         }
 

Content.Server/GameObjects/Components/Movement/AiControllerComponent.cs

@@ -90,6 +90,15 @@ namespace Content.Server.GameObjects.Components.Movement
             }
         }
 
+        /// <inheritdoc />
+        [ViewVariables]
+        public float CurrentPushSpeed => 5.0f;
+
+        /// <inheritdoc />
+        [ViewVariables]
+        public float GrabRange => 0.2f;
+
+
         /// <summary>
         ///     Is the entity Sprinting (running)?
         /// </summary>

Content.Server/GameObjects/Components/Movement/PlayerInputMoverComponent.cs

@@ -67,6 +67,14 @@ namespace Content.Server.GameObjects.Components.Movement
             }
         }
 
+        /// <inheritdoc />
+        [ViewVariables]
+        public float CurrentPushSpeed => 5.0f;
+
+        /// <inheritdoc />
+        [ViewVariables]
+        public float GrabRange => 0.2f;
+
         /// <summary>
         ///     Is the entity Sprinting (running)?
         /// </summary>

Content.Server/GameObjects/Components/Movement/ShuttleControllerComponent.cs

@@ -34,6 +34,15 @@ namespace Content.Server.GameObjects.Components.Movement
         [ViewVariables(VVAccess.ReadWrite)]
         public float CurrentWalkSpeed { get; set; } = 8;
         public float CurrentSprintSpeed { get; set; }
+
+        /// <inheritdoc />
+        [ViewVariables]
+        public float CurrentPushSpeed => 0.0f;
+
+        /// <inheritdoc />
+        [ViewVariables]
+        public float GrabRange => 0.0f;
+
         public bool Sprinting { get; set; }
         public Vector2 VelocityDir { get; } = Vector2.Zero;
         public GridCoordinates LastPosition { get; set; }

Content.Server/GameObjects/Components/Sound/EmitSoundOnUseComponent.cs

@@ -1,4 +1,5 @@
 using Content.Server.GameObjects.EntitySystems;
+using Content.Shared.Audio;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
@@ -16,17 +17,24 @@ namespace Content.Server.GameObjects.Components.Sound
         public override string Name => "EmitSoundOnUse";
 
         public string _soundName;
+        public float _pitchVariation;
 
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
-            serializer.DataField(ref _soundName, "sound", "");
+            serializer.DataField(ref _soundName, "sound", string.Empty);
+            serializer.DataField(ref _pitchVariation, "variation", 0.0f);
         }
 
         bool IUse.UseEntity(UseEntityEventArgs eventArgs)
         {
             if (!string.IsNullOrWhiteSpace(_soundName))
             {
+                if (_pitchVariation > 0.0)
+                {
+                    Owner.GetComponent<SoundComponent>().Play(_soundName, AudioHelpers.WithVariation(_pitchVariation).WithVolume(-2f));
+                    return true;
+                }
                 Owner.GetComponent<SoundComponent>().Play(_soundName, AudioParams.Default.WithVolume(-2f));
                 return true;
             }

Content.Server/GameObjects/EntitySystems/Click/InteractionSystem.cs

@@ -302,8 +302,8 @@ namespace Content.Server.GameObjects.EntitySystems
             var inputSys = EntitySystemManager.GetEntitySystem<InputSystem>();
             inputSys.BindMap.BindFunction(EngineKeyFunctions.Use,
                 new PointerInputCmdHandler(HandleUseItemInHand));
-            inputSys.BindMap.BindFunction(ContentKeyFunctions.Attack,
-                new PointerInputCmdHandler(HandleAttack));
+            inputSys.BindMap.BindFunction(ContentKeyFunctions.WideAttack,
+                new PointerInputCmdHandler(HandleWideAttack));
             inputSys.BindMap.BindFunction(ContentKeyFunctions.ActivateItemInWorld,
                 new PointerInputCmdHandler(HandleActivateItemInWorld));
         }
@@ -362,7 +362,7 @@ namespace Content.Server.GameObjects.EntitySystems
             activateComp.Activate(new ActivateEventArgs {User = user});
         }
 
-        private bool HandleAttack(ICommonSession session, GridCoordinates coords, EntityUid uid)
+        private bool HandleWideAttack(ICommonSession session, GridCoordinates coords, EntityUid uid)
         {
             // client sanitization
             if (!_mapManager.GridExists(coords.GridID))

Content.Server/GameObjects/EntitySystems/GravitySystem.cs

@@ -0,0 +1,134 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Server.GameObjects.Components.Gravity;
+using Content.Server.GameObjects.Components.Mobs;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects.EntitySystems;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Random;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class GravitySystem: EntitySystem
+    {
+#pragma warning disable 649
+        [Dependency] private readonly IMapManager _mapManager;
+        [Dependency] private readonly IPlayerManager _playerManager;
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+        [Dependency] private readonly IRobustRandom _random;
+#pragma warning restore 649
+
+        private const float GravityKick = 100.0f;
+
+        private const uint ShakeTimes = 10;
+
+        private Dictionary<GridId, uint> _gridsToShake;
+
+        private float internalTimer = 0.0f;
+
+        public override void Initialize()
+        {
+            EntityQuery = new TypeEntityQuery<GravityGeneratorComponent>();
+            _gridsToShake = new Dictionary<GridId, uint>();
+        }
+
+        public override void Update(float frameTime)
+        {
+            internalTimer += frameTime;
+            var gridsWithGravity = new List<GridId>();
+            foreach (var entity in RelevantEntities)
+            {
+                var generator = entity.GetComponent<GravityGeneratorComponent>();
+                if (generator.NeedsUpdate)
+                {
+                    generator.UpdateState();
+                }
+                if (generator.Status == GravityGeneratorStatus.On)
+                {
+                    gridsWithGravity.Add(entity.Transform.GridID);
+                }
+            }
+
+            foreach (var grid in _mapManager.GetAllGrids())
+            {
+                if (grid.HasGravity && !gridsWithGravity.Contains(grid.Index))
+                {
+                    grid.HasGravity = false;
+                    ScheduleGridToShake(grid.Index, ShakeTimes);
+                } else if (!grid.HasGravity && gridsWithGravity.Contains(grid.Index))
+                {
+                    grid.HasGravity = true;
+                    ScheduleGridToShake(grid.Index, ShakeTimes);
+                }
+            }
+
+            if (internalTimer > 0.2f)
+            {
+                ShakeGrids();
+                internalTimer = 0.0f;
+            }
+        }
+
+        private void ScheduleGridToShake(GridId gridId, uint shakeTimes)
+        {
+            if (!_gridsToShake.Keys.Contains(gridId))
+            {
+                _gridsToShake.Add(gridId, shakeTimes);
+            }
+            else
+            {
+                _gridsToShake[gridId] = shakeTimes;
+            }
+            // Play the gravity sound
+            foreach (var player in _playerManager.GetAllPlayers())
+            {
+                if (player.AttachedEntity == null
+                    || player.AttachedEntity.Transform.GridID != gridId) continue;
+                _entitySystemManager.GetEntitySystem<AudioSystem>().Play("/Audio/effects/alert.ogg", player.AttachedEntity);
+            }
+        }
+
+        private void ShakeGrids()
+        {
+            // I have to copy this because C# doesn't allow changing collections while they're
+            // getting enumerated.
+            var gridsToShake = new Dictionary<GridId, uint>(_gridsToShake);
+            foreach (var gridId in _gridsToShake.Keys)
+            {
+                if (_gridsToShake[gridId] == 0)
+                {
+                    gridsToShake.Remove(gridId);
+                    continue;
+                }
+                ShakeGrid(gridId);
+                gridsToShake[gridId] -= 1;
+            }
+            _gridsToShake = gridsToShake;
+        }
+
+        private void ShakeGrid(GridId gridId)
+        {
+            foreach (var player in _playerManager.GetAllPlayers())
+            {
+                if (player.AttachedEntity == null
+                    || player.AttachedEntity.Transform.GridID != gridId
+                    || !player.AttachedEntity.TryGetComponent(out CameraRecoilComponent recoil))
+                {
+                    continue;
+                }
+
+                recoil.Kick(new Vector2(_random.NextFloat(), _random.NextFloat()) * GravityKick);
+            }
+        }
+    }
+}

Content.Server/GameObjects/EntitySystems/HandsSystem.cs

@@ -1,9 +1,14 @@
 using System;
+using System.Linq;
+using Content.Server.GameObjects;
 using Content.Server.GameObjects.Components;
 using Content.Server.GameObjects.Components.Stack;
+using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects;
 using Content.Server.Throw;
+using Content.Shared.GameObjects.Components.Inventory;
 using Content.Shared.Input;
+using Content.Shared.Interfaces;
 using Content.Shared.Physics;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
@@ -19,6 +24,7 @@ using Robust.Shared.Interfaces.Map;
 using Robust.Shared.Interfaces.Physics;
 using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
+using Robust.Shared.Localization;
 using Robust.Shared.Log;
 using Robust.Shared.Map;
 using Robust.Shared.Maths;
@@ -33,6 +39,7 @@ namespace Content.Server.GameObjects.EntitySystems
 #pragma warning disable 649
         [Dependency] private readonly IMapManager _mapManager;
         [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+        [Dependency] private readonly IServerNotifyManager _notifyManager;
 #pragma warning restore 649
 
         private const float ThrowForce = 1.5f; // Throwing force of mobs in Newtons
@@ -50,6 +57,8 @@ namespace Content.Server.GameObjects.EntitySystems
             input.BindMap.BindFunction(ContentKeyFunctions.Drop, new PointerInputCmdHandler(HandleDrop));
             input.BindMap.BindFunction(ContentKeyFunctions.ActivateItemInHand, InputCmdHandler.FromDelegate(HandleActivateItem));
             input.BindMap.BindFunction(ContentKeyFunctions.ThrowItemInHand, new PointerInputCmdHandler(HandleThrowItem));
+            input.BindMap.BindFunction(ContentKeyFunctions.SmartEquipBackpack, InputCmdHandler.FromDelegate(HandleSmartEquipBackpack));
+            input.BindMap.BindFunction(ContentKeyFunctions.SmartEquipBelt, InputCmdHandler.FromDelegate(HandleSmartEquipBelt));
         }
 
         /// <inheritdoc />
@@ -126,7 +135,7 @@ namespace Content.Server.GameObjects.EntitySystems
 
             var interactionSystem = _entitySystemManager.GetEntitySystem<InteractionSystem>();
 
-            if(interactionSystem.InRangeUnobstructed(coords.ToMap(_mapManager), ent.Transform.WorldPosition, 0f, ignoredEnt: ent))
+            if(interactionSystem.InRangeUnobstructed(coords.ToMap(_mapManager), ent.Transform.WorldPosition, ignoredEnt: ent))
                 if (coords.InRange(_mapManager, ent.Transform.GridPosition, InteractionSystem.InteractionRange))
                 {
                     handsComp.Drop(handsComp.ActiveIndex, coords);
@@ -190,5 +199,53 @@ namespace Content.Server.GameObjects.EntitySystems
 
             return true;
         }
+
+        private void HandleSmartEquipBackpack(ICommonSession session)
+        {
+            HandleSmartEquip(session, EquipmentSlotDefines.Slots.BACKPACK);
+        }
+
+        private void HandleSmartEquipBelt(ICommonSession session)
+        {
+            HandleSmartEquip(session, EquipmentSlotDefines.Slots.BELT);
+        }
+
+        private void HandleSmartEquip(ICommonSession session, EquipmentSlotDefines.Slots equipementSlot)
+        {
+            var plyEnt = ((IPlayerSession) session).AttachedEntity;
+
+            if (plyEnt == null || !plyEnt.IsValid())
+                return;
+
+            if (!plyEnt.TryGetComponent(out HandsComponent handsComp) || !plyEnt.TryGetComponent(out InventoryComponent inventoryComp))
+                return;
+
+            if (!inventoryComp.TryGetSlotItem(equipementSlot, out ItemComponent equipmentItem)
+                || !equipmentItem.Owner.TryGetComponent<ServerStorageComponent>(out var storageComponent))
+            {
+                _notifyManager.PopupMessage(plyEnt, plyEnt, Loc.GetString("You have no {0} to take something out of!", EquipmentSlotDefines.SlotNames[equipementSlot].ToLower()));
+                return;
+            }
+
+            var heldItem = handsComp.GetHand(handsComp.ActiveIndex)?.Owner;
+
+            if (heldItem != null)
+            {
+                storageComponent.PlayerInsertEntity(plyEnt);
+            }
+            else
+            {
+                if (storageComponent.StoredEntities.Count == 0)
+                {
+                    _notifyManager.PopupMessage(plyEnt, plyEnt, Loc.GetString("There's nothing in your {0} to take out!", EquipmentSlotDefines.SlotNames[equipementSlot].ToLower()));
+                }
+                else
+                {
+                    var lastStoredEntity = Enumerable.Last(storageComponent.StoredEntities);
+                    if (storageComponent.Remove(lastStoredEntity))
+                        handsComp.PutInHandOrDrop(lastStoredEntity.GetComponent<ItemComponent>());
+                }
+            }
+        }
     }
 }

Content.Server/GameObjects/EntitySystems/MoverSystem.cs

@@ -1,4 +1,6 @@
-using Content.Server.GameObjects.Components;
+using System;
+using System.Net;
+using Content.Server.GameObjects.Components;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.Movement;
 using Content.Server.GameObjects.Components.Sound;
@@ -15,6 +17,7 @@ using Robust.Server.Interfaces.Player;
 using Robust.Server.Interfaces.Timing;
 using Robust.Shared.Configuration;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
 using Robust.Shared.GameObjects.Components.Transform;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Input;
@@ -28,6 +31,7 @@ using Robust.Shared.Log;
 using Robust.Shared.Map;
 using Robust.Shared.Maths;
 using Robust.Shared.Network;
+using Robust.Shared.Physics;
 using Robust.Shared.Players;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
@@ -44,6 +48,7 @@ namespace Content.Server.GameObjects.EntitySystems
         [Dependency] private readonly IMapManager _mapManager;
         [Dependency] private readonly IRobustRandom _robustRandom;
         [Dependency] private readonly IConfigurationManager _configurationManager;
+        [Dependency] private readonly IEntityManager _entityManager;
 #pragma warning restore 649
 
         private AudioSystem _audioSystem;
@@ -130,13 +135,43 @@ namespace Content.Server.GameObjects.EntitySystems
                 }
                 var mover = entity.GetComponent<IMoverComponent>();
                 var physics = entity.GetComponent<PhysicsComponent>();
-
-                UpdateKinematics(entity.Transform, mover, physics);
+                if (entity.TryGetComponent<CollidableComponent>(out var collider))
+                {
+                    UpdateKinematics(entity.Transform, mover, physics, collider);
+                }
+                else
+                {
+                    UpdateKinematics(entity.Transform, mover, physics);
+                }
             }
         }
 
-        private void UpdateKinematics(ITransformComponent transform, IMoverComponent mover, PhysicsComponent physics)
+        private void UpdateKinematics(ITransformComponent transform, IMoverComponent mover, PhysicsComponent physics, CollidableComponent collider = null)
         {
+            bool weightless = false;
+
+            var tile = _mapManager.GetGrid(transform.GridID).GetTileRef(transform.GridPosition).Tile;
+
+            if ((!_mapManager.GetGrid(transform.GridID).HasGravity || tile.IsEmpty) && collider != null)
+            {
+                weightless = true;
+                // No gravity: is our entity touching anything?
+                var touching = false;
+                foreach (var entity in _entityManager.GetEntitiesInRange(transform.Owner, mover.GrabRange, true))
+                {
+                    if (entity.TryGetComponent<CollidableComponent>(out var otherCollider))
+                    {
+                        if (otherCollider.Owner == transform.Owner) continue; // Don't try to push off of yourself!
+                        touching |= ((collider.CollisionMask & otherCollider.CollisionLayer) != 0x0
+                                     || (otherCollider.CollisionMask & collider.CollisionLayer) != 0x0) // Ensure collision
+                                    && !entity.HasComponent<ItemComponent>(); // This can't be an item
+                    }
+                }
+                if (!touching)
+                {
+                    return;
+                }
+            }
             if (mover.VelocityDir.LengthSquared < 0.001 || !ActionBlockerSystem.CanMove(mover.Owner))
             {
                 if (physics.LinearVelocity != Vector2.Zero)
@@ -145,6 +180,13 @@ namespace Content.Server.GameObjects.EntitySystems
             }
             else
             {
+                if (weightless)
+                {
+                    physics.LinearVelocity = mover.VelocityDir * mover.CurrentPushSpeed;
+                    transform.LocalRotation = mover.VelocityDir.GetDir().ToAngle();
+                    return;
+                }
+
                 physics.LinearVelocity = mover.VelocityDir * (mover.Sprinting ? mover.CurrentSprintSpeed : mover.CurrentWalkSpeed);
                 transform.LocalRotation = mover.VelocityDir.GetDir().ToAngle();
 

Content.Server/GameTicking/GamePreset.cs

@@ -1,11 +1,14 @@
-namespace Content.Server.GameTicking
+using System.Collections.Generic;
+using Robust.Server.Interfaces.Player;
+
+namespace Content.Server.GameTicking
 {
     /// <summary>
     ///     A round-start setup preset, such as which antagonists to spawn.
     /// </summary>
     public abstract class GamePreset
     {
-        public abstract void Start();
+        public abstract bool Start(IReadOnlyList<IPlayerSession> players);
         public virtual string ModeTitle => "Sandbox";
         public virtual string Description => "Secret!";
     }

Content.Server/GameTicking/GamePresets/PresetDeathMatch.cs

@@ -1,5 +1,7 @@
-using Content.Server.GameTicking.GameRules;
+using System.Collections.Generic;
+using Content.Server.GameTicking.GameRules;
 using Content.Server.Interfaces.GameTicking;
+using Robust.Server.Interfaces.Player;
 using Robust.Shared.IoC;
 
 namespace Content.Server.GameTicking.GamePresets
@@ -10,9 +12,10 @@ namespace Content.Server.GameTicking.GamePresets
         [Dependency] private readonly IGameTicker _gameTicker;
 #pragma warning restore 649
 
-        public override void Start()
+        public override bool Start(IReadOnlyList<IPlayerSession> readyPlayers)
         {
             _gameTicker.AddGameRule<RuleDeathMatch>();
+            return true;
         }
 
         public override string ModeTitle => "Deathmatch";

Content.Server/GameTicking/GamePresets/PresetSandbox.cs

@@ -1,4 +1,6 @@
-using Content.Server.Sandbox;
+using System.Collections.Generic;
+using Content.Server.Sandbox;
+using Robust.Server.Interfaces.Player;
 using Robust.Shared.IoC;
 
 namespace Content.Server.GameTicking.GamePresets
@@ -9,9 +11,10 @@ namespace Content.Server.GameTicking.GamePresets
         [Dependency] private readonly ISandboxManager _sandboxManager;
 #pragma warning restore 649
 
-        public override void Start()
+        public override bool Start(IReadOnlyList<IPlayerSession> readyPlayers)
         {
             _sandboxManager.IsSandboxEnabled = true;
+            return true;
         }
 
         public override string ModeTitle => "Sandbox";

Content.Server/GameTicking/GamePresets/PresetSuspicion.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Server.GameTicking.GameRules;
+using Content.Server.Interfaces.Chat;
+using Content.Server.Interfaces.GameTicking;
+using Content.Server.Mobs.Roles;
+using Content.Server.Players;
+using Content.Server.Sandbox;
+using NFluidsynth;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.Interfaces.Random;
+using Robust.Shared.IoC;
+using Robust.Shared.Random;
+using Logger = Robust.Shared.Log.Logger;
+
+namespace Content.Server.GameTicking.GamePresets
+{
+    public class PresetSuspicion : GamePreset
+    {
+#pragma warning disable 649
+        [Dependency] private readonly ISandboxManager _sandboxManager;
+        [Dependency] private readonly IChatManager _chatManager;
+        [Dependency] private readonly IGameTicker _gameTicker;
+        [Dependency] private readonly IRobustRandom _random;
+#pragma warning restore 649
+
+        public int MinPlayers { get; set; } = 5;
+        public int MinTraitors { get; set; } = 2;
+        public int PlayersPerTraitor { get; set; } = 5;
+
+        public override bool Start(IReadOnlyList<IPlayerSession> readyPlayers)
+        {
+            if (readyPlayers.Count < MinPlayers)
+            {
+                _chatManager.DispatchServerAnnouncement($"Not enough players readied up for the game! There were {readyPlayers.Count} players readied up out of {MinPlayers} needed.");
+                return false;
+            }
+
+            var list = new List<IPlayerSession>(readyPlayers);
+            var numTraitors = Math.Max(readyPlayers.Count() % PlayersPerTraitor, MinTraitors);
+
+            for (var i = 0; i < numTraitors; i++)
+            {
+                var traitor = _random.PickAndTake(list);
+                var mind = traitor.Data.ContentData().Mind;
+                mind.AddRole(new SuspicionTraitorRole(mind));
+            }
+
+            foreach (var player in list)
+            {
+                var mind = player.Data.ContentData().Mind;
+                mind.AddRole(new SuspicionInnocentRole(mind));
+            }
+
+            _gameTicker.AddGameRule<RuleSuspicion>();
+            return true;
+        }
+
+        public override string ModeTitle => "Suspicion";
+        public override string Description => "Suspicion on the Space Station. There are traitors on board... Can you kill them before they kill you?";
+    }
+}

Content.Server/GameTicking/GameRules/RuleSuspicion.cs

@@ -0,0 +1,122 @@
+using System;
+using System.Threading;
+using Content.Server.GameObjects;
+using Content.Server.GameObjects.Components.Mobs;
+using Content.Server.GameObjects.Components.Observer;
+using Content.Server.Interfaces.Chat;
+using Content.Server.Interfaces.GameTicking;
+using Content.Server.Mobs.Roles;
+using Content.Server.Players;
+using NFluidsynth;
+using Robust.Server.Interfaces.Player;
+using Robust.Server.Player;
+using Robust.Shared.Enums;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Logger = Robust.Shared.Log.Logger;
+using Timer = Robust.Shared.Timers.Timer;
+
+namespace Content.Server.GameTicking.GameRules
+{
+    /// <summary>
+    ///     Simple GameRule that will do a free-for-all death match.
+    ///     Kill everybody else to win.
+    /// </summary>
+    public sealed class RuleSuspicion : GameRule, IEntityEventSubscriber
+    {
+        private static readonly TimeSpan DeadCheckDelay = TimeSpan.FromSeconds(1);
+
+#pragma warning disable 649
+        [Dependency] private readonly IPlayerManager _playerManager;
+        [Dependency] private readonly IChatManager _chatManager;
+        [Dependency] private readonly IEntityManager _entityManager;
+        [Dependency] private readonly IGameTicker _gameTicker;
+#pragma warning restore 649
+
+        private readonly CancellationTokenSource _checkTimerCancel = new CancellationTokenSource();
+
+        public override void Added()
+        {
+            _chatManager.DispatchServerAnnouncement("There are traitors on the station! Find them, and kill them!");
+
+            _entityManager.EventBus.SubscribeEvent<MobDamageStateChangedMessage>(EventSource.Local, this, _onMobDamageStateChanged);
+
+            Timer.SpawnRepeating(DeadCheckDelay, _checkWinConditions, _checkTimerCancel.Token);
+        }
+
+        private void _onMobDamageStateChanged(MobDamageStateChangedMessage message)
+        {
+            var owner = message.Species.Owner;
+
+            if (!(message.Species.CurrentDamageState is DeadState))
+                return;
+
+            if (!owner.TryGetComponent<MindComponent>(out var mind))
+                return;
+
+            if (!mind.HasMind)
+                return;
+
+            message.Species.Owner.Description +=
+                mind.Mind.HasRole<SuspicionTraitorRole>() ? "\nThey were a traitor!" : "\nThey were an innocent!";
+        }
+
+        public override void Removed()
+        {
+            base.Removed();
+
+            _checkTimerCancel.Cancel();
+        }
+
+        private void _checkWinConditions()
+        {
+            var traitorsAlive = 0;
+            var innocentsAlive = 0;
+
+            foreach (var playerSession in _playerManager.GetAllPlayers())
+            {
+                if (playerSession.AttachedEntity == null
+                    || !playerSession.AttachedEntity.TryGetComponent(out SpeciesComponent species))
+                {
+                    continue;
+                }
+
+                if (!species.CurrentDamageState.IsConscious)
+                {
+                    continue;
+                }
+
+                if (playerSession.ContentData().Mind.HasRole<SuspicionTraitorRole>())
+                    traitorsAlive++;
+                else
+                    innocentsAlive++;
+            }
+
+            if ((innocentsAlive + traitorsAlive) == 0)
+            {
+                _chatManager.DispatchServerAnnouncement("Everybody is dead, it's a stalemate!");
+                EndRound();
+            }
+
+            else if (traitorsAlive == 0)
+            {
+                _chatManager.DispatchServerAnnouncement("The traitors are dead! The innocents win.");
+                EndRound();
+            }
+            else if (innocentsAlive == 0)
+            {
+                _chatManager.DispatchServerAnnouncement("The innocents are dead! The traitors win.");
+                EndRound();
+            }
+        }
+
+        private void EndRound()
+        {
+            _gameTicker.EndRound();
+            _chatManager.DispatchServerAnnouncement($"Restarting in 10 seconds.");
+            _checkTimerCancel.Cancel();
+            Timer.Spawn(TimeSpan.FromSeconds(10), () => _gameTicker.RestartRound());
+        }
+    }
+}

Content.Server/GameTicking/GameTicker.cs

@@ -104,7 +104,8 @@ namespace Content.Server.GameTicking
 
             _configurationManager.RegisterCVar("game.lobbyenabled", false, CVar.ARCHIVE);
             _configurationManager.RegisterCVar("game.lobbyduration", 20, CVar.ARCHIVE);
-            _configurationManager.RegisterCVar("game.defaultpreset", "Sandbox", CVar.ARCHIVE);
+            _configurationManager.RegisterCVar("game.defaultpreset", "Suspicion", CVar.ARCHIVE);
+            _configurationManager.RegisterCVar("game.fallbackpreset", "Sandbox", CVar.ARCHIVE);
 
             _playerManager.PlayerStatusChanged += _handlePlayerStatusChanged;
 
@@ -181,11 +182,6 @@ namespace Content.Server.GameTicking
 
             SendServerMessage("The round is starting now...");
 
-            RunLevel = GameRunLevel.InRound;
-
-            var preset = MakeGamePreset();
-            preset.Start();
-
             List<IPlayerSession> readyPlayers;
             if (LobbyEnabled)
             {
@@ -196,6 +192,8 @@ namespace Content.Server.GameTicking
                 readyPlayers = _playersInLobby.Keys.ToList();
             }
 
+            RunLevel = GameRunLevel.InRound;
+
             // Get the profiles for each player for easier lookup.
             var profiles = readyPlayers.ToDictionary(p => p, GetPlayerProfile);
 
@@ -222,6 +220,18 @@ namespace Content.Server.GameTicking
                 SpawnPlayer(player, job, false);
             }
 
+            // Time to start the preset.
+            var preset = MakeGamePreset();
+
+            if (!preset.Start(assignedJobs.Keys.ToList()))
+            {
+                SetStartPreset(_configurationManager.GetCVar<string>("game.fallbackpreset"));
+                var newPreset = MakeGamePreset();
+                _chatManager.DispatchServerAnnouncement($"Failed to start {preset.ModeTitle} mode! Defaulting to {newPreset.ModeTitle}...");
+                if(!newPreset.Start(readyPlayers))
+                    throw new ApplicationException("Fallback preset failed to start!");
+            }
+
             _roundStartTimeSpan = IoCManager.Resolve<IGameTiming>().RealTime;
             _sendStatusToAll();
         }
@@ -255,15 +265,16 @@ namespace Content.Server.GameTicking
             var listOfPlayerInfo = new List<RoundEndPlayerInfo>();
             foreach(var ply in _playerManager.GetAllPlayers().OrderBy(p => p.Name))
             {
-                if(ply.AttachedEntity.TryGetComponent<MindComponent>(out var mindComponent)
-                    && mindComponent.HasMind)
+                var mind = ply.ContentData().Mind;
+                if(mind != null)
                 {
+                    var antag = mind.AllRoles.Any(role => role.Antag);
                     var playerEndRoundInfo = new RoundEndPlayerInfo()
                     {
                         PlayerOOCName = ply.Name,
-                        PlayerICName = mindComponent.Mind.CurrentEntity.Name,
-                        Role = mindComponent.Mind.AllRoles.FirstOrDefault()?.Name ?? Loc.GetString("Unkown"),
-                        Antag = false
+                        PlayerICName = mind.CurrentEntity.Name,
+                        Role = antag ? mind.AllRoles.First(role => role.Antag).Name : mind.AllRoles.FirstOrDefault()?.Name ?? Loc.GetString("Unkown"),
+                        Antag = antag
                     };
                     listOfPlayerInfo.Add(playerEndRoundInfo);
                 }
@@ -339,6 +350,7 @@ namespace Content.Server.GameTicking
             {
                 "Sandbox" => typeof(PresetSandbox),
                 "DeathMatch" => typeof(PresetDeathMatch),
+                "Suspicion" => typeof(PresetSuspicion),
                 _ => throw new NotSupportedException()
             });
 

Content.Server/Interfaces/GameObjects/Components/Movement/IMoverComponent.cs

@@ -19,6 +19,17 @@ namespace Content.Server.Interfaces.GameObjects.Components.Movement
         /// </summary>
         float CurrentSprintSpeed { get; }
 
+
+        /// <summary>
+        ///     The movement speed (m/s) of the entity when it pushes off of a solid object in zero gravity.
+        /// </summary>
+        float CurrentPushSpeed { get; }
+
+        /// <summary>
+        ///     How far an entity can reach (in meters) to grab hold of a solid object in zero gravity.
+        /// </summary>
+        float GrabRange { get; }
+
         /// <summary>
         ///     Is the entity Sprinting (running)?
         /// </summary>

Content.Server/Mobs/Mind.cs

@@ -1,12 +1,15 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Content.Server.GameObjects.Components.Mobs;
+using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Players;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Network;
+using Robust.Shared.Utility;
 using Robust.Shared.ViewVariables;
 
 namespace Content.Server.Mobs
@@ -130,6 +133,13 @@ namespace Content.Server.Mobs
             _roles.Remove(role);
         }
 
+        public bool HasRole<T>() where T : Role
+        {
+            var t = typeof(T);
+
+            return _roles.Any(role => role.GetType() == t);
+        }
+
         /// <summary>
         ///     Transfer this mind's control over to a new entity.
         /// </summary>

Content.Server/Mobs/Role.cs

@@ -1,6 +1,9 @@
 // Hey look,
 // Antag Datums.
 
+using Content.Server.GameObjects.EntitySystems;
+using Robust.Shared.Utility;
+
 namespace Content.Server.Mobs
 {
     /// <summary>
@@ -20,6 +23,11 @@ namespace Content.Server.Mobs
         /// </summary>
         public abstract string Name { get; }
 
+        /// <summary>
+        ///     Whether this role should be considered antagonistic or not.
+        /// </summary>
+        public abstract bool Antag { get; }
+
         protected Role(Mind mind)
         {
             Mind = mind;

Content.Server/Mobs/Roles/Job.cs

@@ -11,8 +11,9 @@ namespace Content.Server.Mobs.Roles
         public JobPrototype Prototype { get; }
 
         public override string Name { get; }
+        public override bool Antag => false;
 
-        public String StartingGear => Prototype.StartingGear;
+        public string StartingGear => Prototype.StartingGear;
 
         public Job(Mind mind, JobPrototype jobPrototype) : base(mind)
         {
@@ -25,9 +26,7 @@ namespace Content.Server.Mobs.Roles
             base.Greet();
 
             var chat = IoCManager.Resolve<IChatManager>();
-            chat.DispatchServerMessage(
-                Mind.Session,
-                String.Format("You're a new {0}. Do your best!", Name));
+            chat.DispatchServerMessage(Mind.Session, $"You're a new {Name}. Do your best!");
         }
     }
 

Content.Server/Mobs/Roles/SuspicionInnocentRole.cs

@@ -0,0 +1,25 @@
+using Content.Server.GameObjects;
+using Content.Server.Interfaces.Chat;
+using Robust.Shared.IoC;
+using Robust.Shared.Utility;
+
+namespace Content.Server.Mobs.Roles
+{
+    public class SuspicionInnocentRole : Role
+    {
+        public SuspicionInnocentRole(Mind mind) : base(mind)
+        {
+        }
+
+        public override string Name => "Innocent";
+        public override bool Antag => false;
+
+        public override void Greet()
+        {
+            base.Greet();
+
+            var chat = IoCManager.Resolve<IChatManager>();
+            chat.DispatchServerMessage(Mind.Session, "You're an innocent!");
+        }
+    }
+}

Content.Server/Mobs/Roles/SuspicionTraitorRole.cs

@@ -0,0 +1,25 @@
+using Content.Server.GameObjects;
+using Content.Server.Interfaces.Chat;
+using Robust.Shared.IoC;
+using Robust.Shared.Utility;
+
+namespace Content.Server.Mobs.Roles
+{
+    public sealed class SuspicionTraitorRole : Role
+    {
+        public SuspicionTraitorRole(Mind mind) : base(mind)
+        {
+        }
+
+        public override string Name => "Traitor";
+        public override bool Antag => true;
+
+        public override void Greet()
+        {
+            base.Greet();
+
+            var chat = IoCManager.Resolve<IChatManager>();
+            chat.DispatchServerMessage(Mind.Session, "You're a traitor!");
+        }
+    }
+}

Content.Server/Mobs/Roles/Traitor.cs

@@ -1,24 +0,0 @@
-using Content.Server.Interfaces.Chat;
-using Robust.Shared.IoC;
-
-namespace Content.Server.Mobs.Roles
-{
-    public sealed class Traitor : Role
-    {
-        public Traitor(Mind mind) : base(mind)
-        {
-        }
-
-        public override string Name => "Traitor";
-
-        public override void Greet()
-        {
-            base.Greet();
-
-            var chat = IoCManager.Resolve<IChatManager>();
-            chat.DispatchServerMessage(
-                Mind.Session,
-                "You're a traitor. Go fuck something up. Or something. I don't care to be honest.");
-        }
-    }
-}

Content.Server/Throw/ThrowHelper.cs

@@ -65,6 +65,14 @@ namespace Content.Server.Throw
             var spd = a / (1f / timing.TickRate); // acceleration is applied in 1 tick instead of 1 second, scale appropriately
 
             physComp.LinearVelocity = angle.ToVec() * spd;
+
+            if (throwSourceEnt != null)
+            {
+                var p = throwSourceEnt.GetComponent<PhysicsComponent>();
+                var playerAccel = 5 * throwForce / (float) Math.Max(0.001, p.Mass);
+                p.LinearVelocity = Angle.FromDegrees(angle.Degrees + 180).ToVec()
+                                   * playerAccel / (1f / timing.TickRate);
+            }
         }
     }
 }