KinematicBody

Inherits: PhysicsBody < CollisionObject < Spatial < Node < Object

Category: Core

Brief Description

Kinematic body 3D node.

Member Functions

Vector3 get_floor_velocity ( ) const
KinematicCollision get_slide_collision ( int slide_idx )
int get_slide_count ( ) const
bool is_on_ceiling ( ) const
bool is_on_floor ( ) const
bool is_on_wall ( ) const
KinematicCollision move_and_collide ( Vector3 rel_vec )
Vector3 move_and_slide ( Vector3 linear_velocity, Vector3 floor_normal=Vector3( 0, 0, 0 ), float slope_stop_min_velocity=0.05, int max_slides=4, float floor_max_angle=0.785398 )
bool test_move ( Transform from, Vector3 rel_vec )

Member Variables

  • bool axis_lock_x
  • bool axis_lock_y
  • bool axis_lock_z
  • float collision/safe_margin - If the body is at least this close to another body, this body will consider them to be colliding.

Description

Kinematic bodies are special types of bodies that are meant to be user-controlled. They are not affected by physics at all (to other types of bodies, such a character or a rigid body, these are the same as a static body). They have however, two main uses:

Simulated Motion: When these bodies are moved manually, either from code or from an AnimationPlayer (with process mode set to fixed), the physics will automatically compute an estimate of their linear and angular velocity. This makes them very useful for moving platforms or other AnimationPlayer-controlled objects (like a door, a bridge that opens, etc).

Kinematic Characters: KinematicBody also has an API for moving objects (the move_and_collide and move_and_slide methods) while performing collision tests. This makes them really useful to implement characters that collide against a world, but that don’t require advanced physics.

Member Function Description

  • Vector3 get_floor_velocity ( ) const

Returns the velocity of the floor. Only updates when calling move_and_slide.

Returns a KinematicCollision, which contains information about a collision that occured during the last move_and_slide call. Since the body can collide several times in a single call to move_and_slide, you must specify the index of the collision in the range 0 to (get_slide_count - 1).

  • int get_slide_count ( ) const

Returns the number of times the body collided and changed direction during the last call to move_and_slide.

  • bool is_on_ceiling ( ) const

Returns true if the body is on the ceiling. Only updates when calling move_and_slide.

  • bool is_on_floor ( ) const

Returns true if the body is on the floor. Only updates when calling move_and_slide.

  • bool is_on_wall ( ) const

Returns true if the body is on a wall. Only updates when calling move_and_slide.

Moves the body along the vector rel_vec. The body will stop if it collides. Returns a KinematicCollision, which contains information about the collision.

  • Vector3 move_and_slide ( Vector3 linear_velocity, Vector3 floor_normal=Vector3( 0, 0, 0 ), float slope_stop_min_velocity=0.05, int max_slides=4, float floor_max_angle=0.785398 )

Moves the body along a vector. If the body collides with another, it will slide along the other body rather than stop immediately. If the other body is a KinematicBody or RigidBody, it will also be affected by the motion of the other body. You can use this to make moving or rotating platforms, or to make nodes push other nodes.

linear_velocity is a value in pixels per second. Unlike in for example move_and_collide, you should not multiply it with delta — this is done by the method.

floor_normal is the up direction, used to determine what is a wall and what is a floor or a ceiling. If set to the default value of Vector2(0, 0), everything is considered a wall. This is useful for topdown games.

If the body is standing on a slope and the horizontal speed (relative to the floor’s speed) goes below slope_stop_min_velocity, the body will stop completely. This prevents the body from sliding down slopes when you include gravity in linear_velocity. When set to lower values, the body will not be able to stand still on steep slopes.

If the body collides, it will change direction a maximum of max_bounces times before it stops.

floor_max_angle is the maximum angle (in radians) where a slope is still considered a floor (or a ceiling), rather than a wall. The default value equals 45 degrees.

Returns the movement that remained when the body stopped. To get more detailed information about collisions that occured, use get_slide_collision.

Checks for collisions without moving the body. Virtually sets the node’s position, scale and rotation to that of the given Transform, then tries to move the body along the vector rel_vec. Returns true if a collision would occur.