C# MyEntity类代码示例

        //  This method realy initiates/starts the missile
        //  IMPORTANT: Direction vector must be normalized!
        public void Start(
            Vector3 position,
            Vector3 initialVelocity,
            Vector3 direction,
            float impulseMultiplier,
            MyEntity owner)
        {
            if (Physics.Static)
            {
                Physics.Static = false;
            }

            base.Start(position, initialVelocity, direction, impulseMultiplier, owner, MyTextsWrapper.Get(MyTextsWrapperEnum.RemoteCameraHud));

            Physics.AngularDamping = 1;
            Health = MaxHealth;
            m_directionAfterContact = null;

            var ownerShip = owner as MySmallShip;
            if (ownerShip != null)
            {
                ownerShip.Config.BackCamera.SetOn();
                ownerShip.AddRemoteCamera(this);
                ownerShip.SelectLastRemoteCamera();
            }
        }

 public override bool Update(MyPlayer player, MyEntity me)
 {
     if (me!=null)
         if (Vector3D.DistanceSquared(me.PositionComp.GetPosition(), TargetPos) > m_maxDistance2)
             m_IsTrue = true;
     return IsTrue;
 }

        public static void Init()
        {
            if ( !PluginSettings.Instance.PlayerBlockEnforcementEnabled )
                return;

            if (_init)
                return;

            _init = true;

            MyEntities.OnEntityAdd += MyEntities_OnEntityAdd;

            HashSet<MyEntity> allEntities = new HashSet<MyEntity>();
            Wrapper.GameAction( () => allEntities = MyEntities.GetEntities() );

            MyEntity[] entitiesCopy = new MyEntity[allEntities.Count];
            allEntities.CopyTo( entitiesCopy );

            Parallel.ForEach( entitiesCopy, ( entity ) =>
                                            {
                                                var grid = entity as MyCubeGrid;
                                                if ( grid == null )
                                                    return;

                                                InitGrid( grid );
                                            } );
            Essentials.Log.Info( "Initialized player block enforcement." );
            ProcessEnforcement();
        }

 private void on_entity_deleted(MyEntity entity)
 {
     //log_event("on_entity_deleted", entity);
     var cube_grid = entity as MyCubeGrid;
     if (cube_grid != null)
         grid_manager.remove_grid(cube_grid);
 }

 public override bool Update(MyPlayer player, MyEntity me)
 {
     if (MySession.Static.IsScenario)
         if (m_limit <= DateTime.UtcNow - MyScenarioSystem.Static.ServerStartGameTime)
             m_IsTrue = true;
     return IsTrue;
 }

 public MyCharacterPhysicsStateGroup(MyEntity entity, IMyReplicable ownerReplicable)
     : base(entity, ownerReplicable)
 {
     // This is 9 bits per component which is more than enough (512 discrete values per-axis)
     m_lowPrecisionOrientation = true;
     FindSupportDelegate = () => MySupportHelper.FindSupportForCharacter(Entity);
 }

 override protected bool IsMoving(MyEntity entity)
 {
     // Never know if somebody is moving entity when physics is null
     return Entity.Physics == null
         || Vector3.IsZero(entity.Physics.LinearVelocity, PRECISION) == false
         || Entity.RotationSpeed > 0.0f;
 }

 public override ChangeInfo Update(MyEntity owner, long playerID = 0)
 {
     if (MyCubeBuilder.Static==null)
         return ChangeInfo.None;
     var blockDefinition = MyCubeBuilder.Static.IsActivated ? MyCubeBuilder.Static.ToolbarBlockDefinition : null;
     if ((MyCubeBuilder.Static.BlockCreationIsActivated || MyCubeBuilder.Static.MultiBlockCreationIsActivated) && blockDefinition != null && (!MyFakes.ENABLE_BATTLE_SYSTEM || !MySession.Static.Battle))
     {
         var blockDef = (this.Definition as Sandbox.Definitions.MyCubeBlockDefinition);
         if (blockDefinition.BlockPairName == blockDef.BlockPairName)
         {
             WantsToBeSelected = true;
         }
         else if (blockDef.BlockStages != null && blockDef.BlockStages.Contains(blockDefinition.Id))
         {
             WantsToBeSelected = true;
         }
         else
         {
             WantsToBeSelected = false;
         }
     }
     else
     {
         WantsToBeSelected = false;
     }
     return ChangeInfo.None;
 }

        public bool Update(MyPlayer player, MyEntity entity) //returns if lost
        {
            //MySessionComponentMission.Static.TryCreateFromDefault(Id);

            //if (IsLocal(player.Id))
            //    UpdateLocal(player.Id);

            if (!Sync.IsServer)
                return false;

            MyMissionTriggers mtrig;
            if (!MissionTriggers.TryGetValue(player.Id, out mtrig))
            {
                //Debug.Assert(false,"Bad ID for update in missionTriggers");
                mtrig = TryCreateFromDefault(player.Id, false);
            }
            mtrig.UpdateWin(player, entity);
            if (!mtrig.Won)
                mtrig.UpdateLose(player, entity);
            else
            {
                m_someoneWon = true;
                MyAnalyticsHelper.ReportTutorialEnd();
                MyTutorialHelper.MissionSuccess();
            }
            return mtrig.Lost;
        }

 public MyBasicObstacle(MyEntity entity)
 {
     m_entity = entity;
     m_entity.OnClosing += OnEntityClosing;
     Update();
     m_valid = true;
 }

        private void SectorOnContactPoint(int itemId, MyEntity other, ref MyPhysics.MyContactPointEvent e)
        {
            // if item is already disabled: puff
            // We get multiple contact points so this is for that
            if (m_sector.DataView.Items[itemId].ModelIndex < 0) return;

            var vel = Math.Abs(e.ContactPointEvent.SeparatingVelocity);

            if (other == null || other.Physics == null || other is MyFloatingObject) return;

            if (other is IMyHandheldGunObject<MyDeviceBase>) return;

            // Prevent debris from breaking trees.
            // Debris flies in unpredictable ways and this could cause out of sync tree destruction which would is bad.
            if (other.Physics.RigidBody != null && other.Physics.RigidBody.Layer == MyPhysics.CollisionLayers.DebrisCollisionLayer) return;

            // On objects held in manipulation tool, Havok returns high velocities, after this contact is fired by contraint solver.
            // Therefore we disable damage from objects connected by constraint to character
            if (MyManipulationTool.IsEntityManipulated(other))
                return;

            float otherMass = MyDestructionHelper.MassFromHavok(other.Physics.Mass);

            double impactEnergy = vel * vel * otherMass;

            // TODO: per item max impact energy
            if (impactEnergy > ItemResilience(itemId))
            {
                BreakAt(itemId, e.Position, e.ContactPointEvent.ContactPoint.Normal, impactEnergy);
            }

            // Meteor destroy always
            if (other is MyMeteor)
                m_sector.EnableItem(itemId, false);
        }

 public virtual void Init(Vector3 offset, MyEntity parentObject, MyModelsEnum model)
 {
     base.Init(null, model, null, parentObject, null, null);
     LocalMatrix = Matrix.CreateTranslation(offset);
     RotationSpeed = 0;
     Save = false;
 }

        public static MyEntity FindSupportForCharacterAABB(MyEntity entity)
        {
            BoundingBoxD characterBox = entity.PositionComp.WorldAABB;
            characterBox.Inflate(1.0);
            m_entities.Clear();

            MyEntities.GetTopMostEntitiesInBox(ref characterBox, m_entities);

            float maxRadius = 0;
            MyCubeGrid biggestGrid = null;
            MyEntity voxel = null;
            foreach(var parent in m_entities)
            {
                MyCubeGrid grid =  parent as MyCubeGrid;
                if(parent is MyVoxelBase)
                {
                    voxel = (parent as MyVoxelBase).RootVoxel;
                }
                if(grid != null)
                {
                    var rad = grid.PositionComp.LocalVolume.Radius;
                    if (rad > maxRadius || (rad == maxRadius && (biggestGrid == null || grid.EntityId > biggestGrid.EntityId)))
                    {
                        maxRadius = rad;
                        biggestGrid = grid;
                    }
                }
            }

            if (biggestGrid == null)
            {
                 return voxel;
            }
            return biggestGrid;
        }

        //  Not used apparently
        public static void AddShotgun(MyProjectileAmmoDefinition ammoDefinition, MyEntity ignorePhysObject, Vector3 origin, Vector3 initialVelocity, Vector3 directionNormalized, bool groupStart, float thicknessMultiplier, MyEntity weapon, float frontBillboardSize, MyEntity ownerEntity = null, float projectileCountMultiplier = 1)
        {
            MyProjectile newProjectile = m_projectiles.Allocate();
            if (newProjectile != null)
            {
                //newProjectile.Start(
                //    ammoDefinition,
                //    ignorePhysObject,
                //    origin,
                //    initialVelocity,
                //    directionNormalized,
                //    groupStart,
                //    thicknessMultiplier,
                //    1,
                //    weapon,
                //    projectileCountMultiplier
                //    );

            //    newProjectile.BlendByCameraDirection = true;
            //    newProjectile.FrontBillboardMaterial = "ShotgunParticle";
            //    newProjectile.LengthMultiplier = 2;
            //    newProjectile.FrontBillboardSize = frontBillboardSize;
             //   newProjectile.OwnerEntity = ownerEntity != null ? ownerEntity : ignorePhysObject;
            }
        }

 public void FirstIntoRowShouldReturnFirstRowIfMoreThanOneEntityUsed()
 {
     var first = new MyEntity() { Table = "x" };
     var second = new MyEntity() { Table = "y" };
     var query = new SqlQuery().From(first).From(second.Table, Alias.T1).Into(second);
     Assert.Equal(first, ((ISqlQueryExtensible)query).FirstIntoRow);
 }