Rigidbody 刚体

Inherits from Component

Control of an object's position through physics simulation.

通过物理模拟控制一个物体的位置。

Rigidbody components take control over an object's position - it makes the objects fall down under the influence of gravity, and can calculate how objects will respond to collisions.

Rigidbody组件控制物体的位置 - 它使物体在重力影响下下落，并可计算物体将怎样响应碰撞。

When manipulating rigidbody parameters you should work inside the FixedUpdate function. Physics simulation is carried out in discrete timesteps. The FixedUpdate function is called immediately before each step.

当操作刚体参数的时候，你应该在FixedUpdate函数中使用它，物理模拟以离散的时间步执行。FixedUpdate函数在每一步之前被立即调用。

Things to watch out for when using rigid bodies:

使用刚体需要注意的事：

1. If your simulation looks like slow motion and not solid: This is a problem of scale. When your game world is huge everything will appear to be move very slowly. Make sure all your models are in real world sizes. For example a car should be around 4 meters long. A character around 2 meters high. An object falls at the same acceleration no matter big or small, heavy or light. If your game world has a large scale, objects will still fall at the same acceleration. But since everything is larger, objects will appear like they fall slower.

如果你的模拟看起来像慢动作并且不真实： 这是缩放的问题。如果你的游戏世界非常大，所以的东西将显示移动非常慢，确保你所有的模型为真实世界大小。例如，一个汽车应该有4米长，一个角色约2米高。物体以相同的加速度下落，不论大或小，重或轻。如果你的游戏世界有较大的缩放，物体仍以相同的加速度下落，但是因为所有的物体都比较大，物体的下落显得就比较慢。

Variables变量

• velocity
  The velocity vector of the rigidbody.
  刚体的速度向量。
• angularVelocity
  The angular velocity vector of the rigidbody.
  刚体的角速度向量。
• drag
  The drag of the object.
  物体的阻力。
• angularDrag
  The angular drag of the object.
  物体的角阻力。
• mass
  The mass of the rigidbody.
  刚体的质量。
• useGravity
  Controls whether gravity affects this rigidbody.
  控制重力是否影响整个刚体。
• isKinematic
  Controls whether physics affects the rigidbody.
  控制物理学是否够影响这个刚体。
• freezeRotation
  Controls whether physics will change the rotation of the object.
  控制物理是否改变物体的旋转。
• collisionDetectionMode
  The Rigidbody's collision detection mode.
  刚体的碰撞检测模式。
• centerOfMass
  The center of mass relative to the transform's origin.
  相对于变换原点的质量中心。
• worldCenterOfMass
  The center of mass of the rigidbody in world space (Read Only).
  在世界坐标空间的刚体的质量中心。（只读）
• inertiaTensorRotation
  The rotation of the inertia tensor.
  惯性张量的旋转。
• inertiaTensor
  The diagonal inertia tensor of mass relative to the center of mass.
  相对于重心的质量的惯性张量对角线。
• detectCollisions
  Should collision detection be enabled? (By default always enabled)
  碰撞检测应否启用？（默认总是启用的）
• useConeFriction
  Force cone friction to be used for this rigidbody.
  用于该刚体的锥形摩擦力。
• position
  The position of the rigidbody.
  该刚体的位置。
• rotation
  The rotation of the rigdibody.
  该刚体的旋转。
• interpolation
  Interpolation allows you to smooth out the effect of running physics at a fixed frame rate.
  插值允许你以固定的帧率平滑物理运行效果。
• solverIterationCount
  Allows you to override the solver iteration count per rigidbody.
  允许你覆盖每个刚体的求解迭代次数。
• sleepVelocity
  The linear velocity, below which objects start going to sleep. (Default 0.14) range { 0, infinity }
  线性速度，低于该值的物体将开始休眠。（默认0.14）范围{0, infinity}
• sleepAngularVelocity
  The angular velocity, below which objects start going to sleep. (Default 0.14) range { 0, infinity }
  角速度，低于该值的物体将开始休眠。（默认0.14）范围{0, infinity}
• maxAngularVelocity
  The maximimum angular velocity of the rigidbody. (Default 7) range { 0, infinity }
  刚体的最大角速度，（默认7）范围{0, infinity}

Functions函数

• SetDensity
  Sets the mass based on the attached colliders assuming a constant density.
  基于附加的碰撞器假设一个固定的密度设置质量。
• AddForce
  Adds a force to the rigidbody. As a result the rigidbody will start moving.
  添加一个力到刚体。作为结果刚体将开始移动。
• AddRelativeForce
  Adds a force to the rigidbody relative to its coordinate system.
  添加一个力到刚体。相对于它的系统坐标。
• AddTorque
  Adds a torque to the rigidbody.
  添加一个力矩到刚体。
• AddRelativeTorque
  Adds a torque to the rigidbody relative to the rigidbodie's own coordinate system.
  添加一个力矩到刚体，相对于刚体自身的坐标系统。
• AddForceAtPosition
  Applies force at position. As a result this will apply a torque and force on the object.
  在position位置应用force力。作为结果这个将在这个物体上应用一个力矩和力。
• AddExplosionForce
  Applies a force to the rigidbody that simulates explosion effects. The explosion force will fall off linearly with distance to the rigidbody.
  应用一个力到刚体来模拟爆炸效果。爆炸力将随着到刚体的距离线形衰减。
• ClosestPointOnBounds
  The closest point to the bounding box of the attached colliders.
  到附加的碰撞器边界框上的最近点。
• GetRelativePointVelocity
  The velocity relative to the rigidbody at the point relativePoint.
  相对于刚体在relativePoint点的速度。
• GetPointVelocity
  The velocity of the rigidbody at the point worldPoint in global space.
  刚体在世界坐标空间中worldPoint点的速度。
• MovePosition
  Moves the rigidbody to position.
  移动刚体到position。
• MoveRotation
  Rotates the rigidbody to rotation.
  旋转刚体到rot。
• Sleep
  Forces a rigidbody to sleep at least one frame.
  强制一个刚体休眠至少一帧。
• IsSleeping
  Is the rigidbody sleeping?
  刚体在休眠么？
• WakeUp
  Forces a rigidbody to wake up.
  强制唤醒一个刚体。
• SweepTest
  Tests if a rigidbody would collide with anything, if it was moved through the scene.
  如果一个刚体碰到任何东西触发测试，如果它是穿过场景。
• SweepTestAll
  Like Rigidbody.SweepTest, but returns all hits.
  像Rigidbody.SweepTest，但是返回所有碰撞点。

Messages Sent发送消息

• OnCollisionEnter
  OnCollisionEnter is called when this collider/rigidbody has begun touching another rigidbody/collider.
  当这个collider/rigidbody已经开始接触另一个rigidbody/collider时，OnCollisionEnter被调用。
• OnCollisionExit
  OnCollisionExit is called when this collider/rigidbody has stopped touching another rigidbody/collider.
  当这个collider/rigidbody停止接触另一个rigidbody/collider时，OnCollisionExit被调用。
• OnCollisionStay
  OnCollisionStay is called once per frame for every collider/rigidbody that is touching rigidbody/collider.
  对于每个collider/rigidbody接触另一个rigidbody/collider时，OnCollisionStay每帧被调用一次。

Inherited members继承成员

Inherited Variables继承变量

• transform
  The Transform attached to this GameObject (null if there is none attached).
  Transform附加到GameObject（游戏物体）（如无附加则为空）。
• rigidbody
  The Rigidbody attached to this GameObject (null if there is none attached).
  Rigidbody附加到GameObject（游戏物体）（如无附加则为空）。
• camera
  The Camera attached to this GameObject (null if there is none attached).
  Camera附加到GameObject（游戏物体）（如无附加则为空）。
• light
  The Light attached to this GameObject (null if there is none attached).
  Light附加到GameObject（游戏物体）（如无附加则为空）。
• animation
  The Animation attached to this GameObject (null if there is none attached).
  Animation附加到GameObject（游戏物体）（如无附加则为空）。
• constantForce
  The ConstantForce attached to this GameObject (null if there is none attached).
  ConstantForce附加到GameObject（游戏物体）（如无附加则为空）。
• renderer
  The Renderer attached to this GameObject (null if there is none attached).
  Renderer附加到GameObject（游戏物体）（如无附加则为空）。
• audio
  The AudioSource attached to this GameObject (null if there is none attached).
  AudioSource附加到GameObject（游戏物体）（如无附加则为空）。
• guiText
  The GUIText attached to this GameObject (null if there is none attached).
  GUIText附加到GameObject（游戏物体）（如无附加则为空）。
• networkView
  The NetworkView attached to this GameObject (Read Only). (null if there is none attached)
  NetworkView附加到GameObject（游戏物体）（只读）（如无附加则为空）。
• guiTexture
  The GUITexture attached to this GameObject (Read Only). (null if there is none attached)
  GUITexture附加到GameObject（游戏物体）（只读）（如无附加则为空）。
• collider
  The Collider attached to this GameObject (null if there is none attached).
  Collider附加到GameObject（游戏物体）（如无附加则为空）。
• hingeJoint
  The HingeJoint attached to this GameObject (null if there is none attached).
  HingeJoint附加到GameObject（游戏物体）（如无附加则为空）。
• particleEmitter
  The ParticleEmitter attached to this GameObject (null if there is none attached).
  ParticleEmitter附加到GameObject（游戏物体）（如无附加则为空）。
• gameObject
  The game object this component is attached to. A component is always attached to a game object.
  组件附加的游戏物体。一个组件总是被附加到一个游戏物体。
• tag
  The tag of this game object.
  游戏物体的标签。

• name
  The name of the object. //物体的名字
• hideFlags
  Should the object be hidden, saved with the scene or modifiable by the user?
  物体是否被隐藏、保存在场景中或被用户修改？

Inherited Functions继承函数

• GetComponent
  Returns the component of Type type if the game object has one attached, null if it doesn't.
  如果游戏物体有一个附加，则返回Type类型的组件，如果没有则为null。
• GetComponent.<T>
   
• GetComponent
  Returns the component with name type if the game object has one attached, null if it doesn't.
  如果游戏物体有一个附加，则返回名字类型组件，如果没有则为null。
• GetComponentInChildren
  Returns the component of Type type in the GameObject or any of its children using depth first search.
  返回Type类型组件，在GameObject或它的任何子物体使用深度优先搜索，仅返回激活的组件。
• GetComponentInChildren.<T>
   
• GetComponentsInChildren
  Returns all components of Type type in the GameObject or any of its children.
  在GameObject或任何它的子物体，返回全部Type类型组件
• GetComponentsInChildren.<T>
   
• GetComponents
  Returns all components of Type type in the GameObject.
  在游戏物体返回全部Type类型组件。
• GetComponents.<T>
   
• CompareTag
  Is this game object tagged tag?
  游戏物体有被标记标签么？
• SendMessageUpwards
  Calls the method named methodName on every MonoBehaviour in this game object and on every ancestor of the behaviour
  在游戏物体每一个MonoBehaviour和每一个behaviour的祖先上调用名为methodName的方法。
• SendMessage
  Calls the method named methodName on every MonoBehaviour in this game object.
  在游戏物体每一个MonoBehaviour上调用名为methodName的方法。
• BroadcastMessage
  Calls the method named methodName on every MonoBehaviour in this game object or any of its children.
  在游戏物体每一个MonoBehaviour和它的全部子物体上调用名为methodName的方法。

• GetInstanceID
  Returns the instance id of the object.
  返回物体的实例ID
• ToString
  Returns the name of the game object.
  返回游戏物体的名称。

Inherited Class Functions继承类函数

• Destroy
  Removes a gameobject, component or asset.
  删除一个游戏物体、组件或资源
• DestroyImmediate
  Destroys the object obj immediately. It is strongly recommended to use Destroy instead.
  立即销毁物体obj，强烈建议使用Destroy代替。
• DontDestroyOnLoad
  Makes the object target not be destroyed automatically when loading a new scene.
  加载新场景的时候使目标物体不被自动销毁。
• FindObjectOfType
  Returns the first active loaded object of Type type.
  返回Type类型第一个激活的加载的物体。
• FindObjectsOfType
  Returns a list of all active loaded objects of Type type.
  返回Type类型的所有激活的加载的物体列表
• Instantiate
  Clones the object original and returns the clone.
  克隆原始物体，并返回克隆的物体