Type Method

changeChargeBy:duration:

Creates an action that changes the charge of a node’s physics body by a relative value.

Declaration

+ (SKAction *)changeChargeBy:(float)v duration:(NSTimeInterval)duration;

Parameters

v

The amount to add to the physics body’s charge.

duration

The duration of the animation.

Return Value

A new action object.

Discussion

When the action executes, the physics body’s charge property animates from its current value to its new value.

This action is reversible; the reverse is created as if the following code is executed:

[SKAction changeChargeBy: -v duration: sec];

See Also

Animating Properties of a Node's Physics Body

+ applyForce:duration:

Creates an action that applies a force to the center of gravity of a node’s physics body.

+ applyTorque:duration:

Creates an action that applies a torque to a node’s physics body.

+ applyForce:atPoint:duration:

Creates an action that applies a force to a specific point on a node’s physics body.

+ applyImpulse:duration:

Creates an action that applies an impulse to the center of gravity of a physics body.

+ applyAngularImpulse:duration:

Creates an action that applies an angular impulse to a node’s physics body.

+ applyImpulse:atPoint:duration:

Creates an action that applies an impulse to a specific point of a node’s physics body.

+ changeChargeTo:duration:

Creates an action that changes the charge of a node’s physics body to a new value.

+ changeMassTo:duration:

Creates an action that changes the mass of a node’s physics body to a new value.

+ changeMassBy:duration:

Creates an action that changes the mass of a node’s physics body by a relative value.

+ strengthTo:duration:

Creates an action that animates a change of a physics field’s strength.

+ strengthBy:duration:

Creates an action that animates a change of a physics field’s strength to a value relative to the existing value.

+ falloffTo:duration:

Creates an action that animates a change of a physics field’s falloff.

+ falloffBy:duration:

Creates an action that animates a change of a physics field’s falloff to a value relative to the existing value.