Game Lab Documentation

sprite.rotationSpeed

Category:Sprites

Clockwise rotation change in degrees per frame of the sprite.

A positive value will rotate clockwise, a negative value will rotate counterclockwise. Must be used with the draw() function containing a drawSprites().

The default rotationSpeed is 0. All sprite properties can be both accessed and updated.

Examples

var sprite = createSprite(200, 200);
sprite.rotationSpeed=10;
function draw() {
  background("white");
  drawSprites();
}

Faster and Faster

Make the sprite spin faster and faster when the mouse moves.

// Make the sprite spin faster and faster when the mouse moves.
var sprite = createSprite(200, 200);
function draw() {
  background("white");
  if (mouseDidMove()) sprite.rotationSpeed=sprite.rotationSpeed+1;
  drawSprites();
}

Syntax

sprite.rotationSpeed

Returns

The clockwise rotation speed.

Tips

rotationSpeed can be used similarly to using the "counter pattern" on rotation within the draw() function.
Changing World.frameRate will affect the rotationSpeed.
This is not the sprite's movement direction, see getDirection instead.
Slight rotations in either direction make sprites look like they are jiggling or skidding while moving.
Sprites all have the same properties and you use the dot notation (combining the name of the sprite, followed by a dot, with the label of the property) to both access and update the property for that sprite.
Any changes to the properties of a sprite will not be seen until after drawSprites() is called.

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