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UE3主页 > 移动设备主页>移动设备载具示例

移动设备的载具示例

于 2011 年 10 月对 UDK 进行最后测试

概述

虚幻引擎3中的载具是物理仿真对象，为玩家提供了新的游戏性选项。大部分载具类型都可以在移动设备上模拟，比如卡车、坦克、直升飞机或飞机。UDN上已经提供了很多关于载具的信息，而本文的目的是提供一个针对移动设备平台（比如iOS）的示例。

相关主题

MobileVehicleGameInfo

这个自定义的GameInfo为玩家生成一个载具，并让玩家自动地驾驶它。

MobileVehicleGameInfo.uc 
class MobileVehicleGameInfo extends SimpleGame;

function RestartPlayer(Controller NewPlayer)
{
  local NavigationPoint StartSpot;
  local int Idx;
  local array<SequenceObject> Events;
  local SeqEvent_PlayerSpawned SpawnedEvent;
  local Vehicle Vehicle;

  if (bRestartLevel && WorldInfo.NetMode!= NM_DedicatedServer && WorldInfo.NetMode!= NM_ListenServer)
  {
    return;
  }

  StartSpot = FindPlayerStart(NewPlayer, 255);

  if (StartSpot == None)
  {
    if (NewPlayer.StartSpot != None)
    {
      StartSpot = NewPlayer.StartSpot;
    }
    else
    {
      return;
    }
  }

  if (NewPlayer.Pawn == None)
  {
    NewPlayer.Pawn = Spawn(class'MobileVehiclePawn',,, StartSpot.Location, StartSpot.Rotation);
  }

  if (NewPlayer.Pawn == None)
  {
    NewPlayer.GotoState('Dead');

    if (PlayerController(NewPlayer) != None)
    {
      PlayerController(NewPlayer).ClientGotoState('Dead', 'Begin');
    }
  }
  else
  {
    NewPlayer.Pawn.SetAnchor(StartSpot);

    if (PlayerController(NewPlayer) != None)
    {
      PlayerController(NewPlayer).TimeMargin = -0.1;
      StartSpot.AnchoredPawn = None;
    }

    NewPlayer.Pawn.LastStartSpot = PlayerStart(StartSpot);
    NewPlayer.Pawn.LastStartTime = WorldInfo.TimeSeconds;
    NewPlayer.Possess(NewPlayer.Pawn, false);
    NewPlayer.ClientSetRotation(NewPlayer.Pawn.Rotation, true);

    SetPlayerDefaults(NewPlayer.Pawn);

    if (WorldInfo.GetGameSequence() != None)
    {
      WorldInfo.GetGameSequence().FindSeqObjectsByClass(class'SeqEvent_PlayerSpawned', true, Events);

      for (Idx = 0; Idx < Events.Length; Idx++)
      {
        SpawnedEvent = SeqEvent_PlayerSpawned(Events[Idx]);

        if (SpawnedEvent != None && SpawnedEvent.CheckActivate(NewPlayer,NewPlayer))
        {
          SpawnedEvent.SpawnPoint = startSpot;
          SpawnedEvent.PopulateLinkedVariableValues();
        }
      }
    }

    NewPlayer.Pawn.SetCollision(false, false, false);
    Vehicle = Spawn(class'MobileVehicleScorpion',,, StartSpot.Location, StartSpot.Rotation);

    if (Vehicle != None)
    {
      Vehicle.TryToDrive(NewPlayer.Pawn);
    }
  }
}

defaultproperties
{
  PlayerControllerClass=class'MobileVehiclePlayerController'
}

MobileVehiclePawn

因为SimplePawn 中的TickSpecial尝试访问控制器并返回‘Access Nones(访问为空)’，所以创建了这个类。这里去除了TickSpecial以防止出现这个警告。

MobileVehiclePawn.uc 
class MobileVehiclePawn extends SimplePawn;

event TickSpecial(float DeltaTime);

defaultproperties
{
}

MobileVehiclePlayerController

之所以创建这个类是因为SimplePC 中的PlayerTick正在播放脚步声，而这对于驾驶车辆来说是不正确的。已经修改了PlayerDriving，使它使用PlayerInput.aForward和PlayerInput.aStrafe来控制载具。这是因为默认的虚拟游戏控制杆和这些输入变量相映射。

同时，添加了运动控制，以便玩家可以倾斜设备来控制车辆。

MobileVehiclePlayerController.uc 
class MobileVehiclePlayerController extends SimplePC;

function PlayerTick(float DeltaTime)
{
  Super(GamePlayerController).PlayerTick(DeltaTime);
}

state PlayerDriving
{
ignores SeePlayer, HearNoise, Bump;

  function ProcessMove(float DeltaTime, vector NewAccel, eDoubleClickDir DoubleClickMove, rotator DeltaRot);

  function ProcessDrive(float InForward, float InStrafe, float InUp, bool InJump)
  {
    local Vehicle CurrentVehicle;

    CurrentVehicle = Vehicle(Pawn);

    if (CurrentVehicle != None)
    {
      bPressedJump = InJump;
      CurrentVehicle.SetInputs(InForward, -InStrafe, InUp);
      CheckJumpOrDuck();
    }
  }

  function PlayerMove(float DeltaTime)
  {
    local float Forward, Strafe;

    UpdateRotation(DeltaTime);

    // Get the forward input information
    Forward = PlayerInput.aForward;
    // Get the strafe input information
    Strafe = PlayerInput.aStrafe;

    if (PlayerInput != None)
    {
      Forward = (((PlayerInput.aTilt.X * UnrRotToDeg) - 30.f) / 50.f) * -1.f;
      Strafe = (PlayerInput.aTilt.Z * UnrRotToDeg) / 20.f;
    }

    // Clamp the forward to within -1.f and 1.f
    Forward = FClamp(Forward, -1.f, 1.f);
    // Clamp the strafe to within -1.f and 1.f
    Strafe = FClamp(Strafe, -1.f, 1.f);

    ProcessDrive(Forward, Strafe, PlayerInput.aUp, bPressedJump);

    if (Role < ROLE_Authority)
    {
      ServerDrive(PlayerInput.aForward, PlayerInput.aStrafe, PlayerInput.aUp, bPressedJump, ((Rotation.Yaw & 65535) << 16) + (Rotation.Pitch & 65535));
    }

    bPressedJump = false;
  }

  event BeginState(Name PreviousStateName)
  {
    CleanOutSavedMoves();
  }

  event EndState(Name NextStateName)
  {
    CleanOutSavedMoves();
  }
}

defaultproperties
{
}

MobileVehicleScorpion

这个类代表Scorpion(天蝎式飞机)载具。它是UTVehicle_Scorpion 和UTVehicle_Scorpion_Content的简单组合。为了简化，我们使用SVehicle作为基类。

MobileVehicleScorpion.uc 
class MobileVehicleScorpion extends SVehicle;

var DynamicLightEnvironmentComponent LightEnvironment;

defaultproperties
{
  Health=300
  COMOffset=(X=-40.f,Y=0.f,Z=-36.f)
  UprightLiftStrength=280.f
  UprightTime=1.25f
  UprightTorqueStrength=500.f
  bCanFlip=true
  bHasHandbrake=true
  GroundSpeed=950
  AirSpeed=1100
  HeavySuspensionShiftPercent=0.75f
  MomentumMult=0.5f
  NonPreferredVehiclePathMultiplier=1.5f
  DrawScale=1.2f
  bAlwaysRelevant=true
  SquealThreshold=0.1f
  SquealLatThreshold=0.f2f
  LatAngleVolumeMult=30.f
  EngineStartOffsetSecs=2.f
  EngineStopOffsetSecs=1.f
  bAttachDriver=false
  BaseEyeheight=30
  Eyeheight=30

  Begin Object Class=AudioComponent Name=ScorpionEngineSound
    SoundCue=SoundCue'MobileVehicleContent.Sounds.ScorpionEngineLoopSoundCue'
  End Object
  EngineSound=ScorpionEngineSound
  Components.Add(ScorpionEngineSound);

  Begin Object Class=AudioComponent Name=ScorpionSquealSound
    SoundCue=SoundCue'MobileVehicleContent.Sounds.ScorpionSlideSoundCue'
  End Object
  SquealSound=ScorpionSquealSound
  Components.Add(ScorpionSquealSound);

  CollisionSound=SoundCue'MobileVehicleContent.Sounds.ScorpionCollideSoundCue'
  EnterVehicleSound=SoundCue'MobileVehicleContent.Sounds.ScorpionStartSoundCue'

  Begin Object Name=CollisionCylinder
    BlockNonZeroExtent=false
    BlockZeroExtent=false
    BlockActors=false
    BlockRigidBody=false
    CollideActors=false
    CollisionHeight=40.f
    CollisionRadius=100.f
    Translation=(X=-25.f)
  End Object

  Begin Object Class=DynamicLightEnvironmentComponent Name=MyLightEnvironment
    bSynthesizeSHLight=true
    bIsCharacterLightEnvironment=true
    bUseBooleanEnvironmentShadowing=true
  End Object
  Components.Add(MyLightEnvironment)
  LightEnvironment=MyLightEnvironment

  Begin Object Name=SVehicleMesh
    CastShadow=true
    bCastDynamicShadow=true
    bOverrideAttachmentOwnerVisibility=true
    bAcceptsDynamicDecals=false
    bPerBoneMotionBlur=true
    LightEnvironment=MyLightEnvironment
    SkeletalMesh=SkeletalMesh'MobileVehicleContent.SkeletalMeshes.ScorpionSkeletalMesh'
    AnimTreeTemplate=AnimTree'MobileVehicleContent.AnimTrees.ScorpionAnimTree'
    PhysicsAsset=PhysicsAsset'MobileVehicleContent.PhysicsAssets.ScorpionPhysicsAsset'
    AnimSets.Add(AnimSet'MobileVehicleContent.AnimSets.ScorpionAnimSet')
    RBCollideWithChannels=(Default=true,BlockingVolume=true,GameplayPhysics=true,EffectPhysics=true,Vehicle=true,Untitled4=true)
  End Object

  Begin Object Class=UDKVehicleSimCar Name=SimObject
    WheelSuspensionStiffness=100.f
    WheelSuspensionDamping=3.f
    WheelSuspensionBias=0.1f
    ChassisTorqueScale=0.f
    MaxBrakeTorque=5.f
    StopThreshold=100
    MaxSteerAngleCurve=(Points=((InVal=0.f,OutVal=45.f),(InVal=600.f,OutVal=15.f),(InVal=1100.f,OutVal=10.f),(InVal=1300.f,OutVal=6.f),(InVal=1600.f,OutVal=1.f)))
    SteerSpeed=110
    LSDFactor=0.f
    TorqueVSpeedCurve=(Points=((InVal=-600.f,OutVal=0.f),(InVal=-300.f,OutVal=80.f),(InVal=0.f,OutVal=130.f),(InVal=950.f,OutVal=130.f),(InVal=1050.f,OutVal=10.f),(InVal=1150.f,OutVal=0.f)))
    EngineRPMCurve=(Points=((InVal=-500.f,OutVal=2500.f),(InVal=0.f,OutVal=500.f),(InVal=549.f,OutVal=3500.f),(InVal=550.f,OutVal=1000.f),(InVal=849.f,OutVal=4500.f),(InVal=850.f,OutVal=1500.f),(InVal=1100.f,OutVal=5000.f)))
    EngineBrakeFactor=0.f25f
    ThrottleSpeed=0.2f
    WheelInertia=0.2f
    NumWheelsForFullSteering=4
    SteeringReductionFactor=0.f
    SteeringReductionMinSpeed=1100.f
    SteeringReductionSpeed=1400.f
    bAutoHandbrake=true
    bClampedFrictionModel=true
    FrontalCollisionGripFactor=0.18f
    ConsoleHardTurnGripFactor=1.f
    HardTurnMotorTorque=0.7f
    SpeedBasedTurnDamping=20.f
    AirControlTurnTorque=40.f
    InAirUprightMaxTorque=15.f
    InAirUprightTorqueFactor=-30.f
    WheelLongExtremumSlip=0.1f
    WheelLongExtremumValue=1.f
    WheelLongAsymptoteSlip=2.f
    WheelLongAsymptoteValue=0.6f
    WheelLatExtremumSlip=0.35f
    WheelLatExtremumValue=0.9f
    WheelLatAsymptoteSlip=1.4f
    WheelLatAsymptoteValue=0.9f
    bAutoDrive=false
    AutoDriveSteer=0.3f
  End Object
  SimObj=SimObject
  Components.Add(SimObject)

  Begin Object Class=MobileVehicleScorpionWheel Name=RRWheel
    BoneName="B_R_Tire"
    BoneOffset=(X=0.f,Y=20.f,Z=0.f)
    SkelControlName="B_R_Tire_Cont"
  End Object
  Wheels(0)=RRWheel

  Begin Object Class=MobileVehicleScorpionWheel Name=LRWheel
    BoneName="B_L_Tire"
    BoneOffset=(X=0.f,Y=-20.f,Z=0.f)
    SkelControlName="B_L_Tire_Cont"
  End Object
  Wheels(1)=LRWheel

  Begin Object Class=MobileVehicleScorpionWheel Name=RFWheel
    BoneName="F_R_Tire"
    BoneOffset=(X=0.f,Y=20.f,Z=0.f)
    SteerFactor=1.f
    LongSlipFactor=2.f
    LatSlipFactor=3.f
    HandbrakeLongSlipFactor=0.8
    HandbrakeLatSlipFactor=0.8
    SkelControlName="F_R_Tire_Cont"
  End Object
  Wheels(2)=RFWheel

  Begin Object Class=MobileVehicleScorpionWheel Name=LFWheel
    BoneName="F_L_Tire"
    BoneOffset=(X=0.f,Y=-20.f,Z=0.f)
    SteerFactor=1.f
    LongSlipFactor=2.f
    LatSlipFactor=3.f
    HandbrakeLongSlipFactor=0.8f
    HandbrakeLatSlipFactor=0.8f
    SkelControlName="F_L_Tire_Cont"
  End Object
  Wheels(3)=LFWheel
}

MobileVehicleScorpionWheel

这个类和UTVehicleScorpionWheel类一样，可以在UTGame包中找到。

MobileVehicleScorpionWheel.uc 
class MobileVehicleScorpionWheel extends UDKVehicleWheel;

defaultproperties
{
  WheelRadius=27
  SuspensionTravel=40
  bPoweredWheel=true
  SteerFactor=0.0
  LongSlipFactor=2.0
  LatSlipFactor=2.75
  HandbrakeLongSlipFactor=0.7
  HandbrakeLatSlipFactor=0.3
  ParkedSlipFactor=10.0
}

下载

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