Eng:Direction (value)

A sprite's direction value controls how much a sprite is rotated. It is measured in degrees (°) and ranges from -90° (pointing left) to 180° (pointing down). The default value for the direction is 90° (pointing right).

Whether the sprite is actually rotated or not is determined by the sprite's rotation style.

Depending on the direction a sprite is pointing in, the Move Steps block will move the sprite differently. However the Change X by and Change Y by  blocks are not affected by the direction of a sprite.

Directions
Scratch uses an angle measurement that is similar to degrees, with the addition of negative values, like polar coordinates. "0" represents "up". Every degree added corresponds to a one degree turn clockwise by the sprite. So a direction of 90 means a sprite turns 90 degrees (a quarter turn) after pointing straight up and will thus point right.

Negative degree measures simply mean rotation counter-clockwise rather than clockwise. So -90 is left and -180 is down, just like +180.

This table shows some common values and their directions:

Finally, when the direction is greater than 360°, the sprite points in the direction, minus 360°. So 400° is analogous to 400-360=40°, and 720° = 360° = 0°. This can be mimicked by the code below.

The expression that returns the direction (subtracting the 360 if the number is too large) is this: ((((180) + (x)) mod (360)) - (180))

Related Blocks
The following blocks can be used in conjunction with this value:
 * Direction The stage monitor and reporter block of the direction value
 * Turn Degrees  Changes the direction by a certain amount
 * Point in Direction  Sets the direction of a sprite
 * Point Towards  Changes the direction to point at either another sprite or the mouse pointer
 * If on Edge, Bounce Changes the direction by -180° when a sprite is touching the edge
 * Move Steps  Moves in the current direction
 * of (Sensing block)  A block that reports the value of any sprite's X Position, Y Position, Direction, Costume/Background number, Size, Volume, Variables

Example Uses
This value can be used in a number of ways:
 * Spinning an object in a game
 * Making a sprite point at the mouse pointer or another sprite
 * Can be used to give the illusion that a sprite is turning into something else (i.e. spinning it round really fast, changing the costume, and then slowing it down)