Rotate Sprite

Starts a sprite rotating


Rotate Sprite spriteNum,rotAmount,speed


The 'Rotate Sprite' command sets sprite spriteNum rotating at a specified speed for rotAmount degrees clockwise. Once it has started rotating it will continue to do so until it has rotated by a total of rotAmount or you issue it another rotate command.

The speed is specified in degrees/frame, for example passing 1 means move one degree per frame in towards the destination. If you pass in a negative number as the speed, this is instead interpreted as the number of steps to complete the movement in. For example, passing -5 means cover the distance in 5 steps, no matter what the distance is.

If the rotAmount is omitted, then the sprite will rotate at the speed specified in speed forever.

Rotate Sprite 1,45,0.1 ' Rotate sprite 1 45 degrees cw at 0.1 degrees per frame

Rotate Sprite 1,,-1 ' Rotate sprite 1, 1 degrees per frame anti-clockwise forever

To test if a sprite has finishing rotating use the Sprite Rotating function.
To stop the sprite before its rotation finishes, issue another rotate command with 0 for the rotate amount.

NB: 'Rotate Sprite' only works in hardware mode.

See also:
The 'R'otate moan program function.

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