If Key Down


Description

This action checks for the initial down press on a keyboard key. It will return true on the single game tick that the key is pressed down and false at all other times. If you enable the not modifier, this action will be reversed, and check if the key has not been pressed down, returning false on the game tick that it has been pressed down and true at all other times.

Note that to add actions into the "if" block, they should be dropped to the side of the action, as shown in the image below:
If Add Actions Any actions dropped elsewhere will be performed after the "if" block.


Action Syntax:

Key Down Syntax


Arguments:

Argument Description
Key The name of the keyboard key to check.
Not Negate the check (true becomes false and vice versa)


Example:

Key Pressed Example
The above action block code polls the keyboard state every step and if a key is being held down it checks for the initial key down press. If the check is true on the initial down press, a sound is played, then, while the key is held down, the sprite blending is changed to red. If the key is not being held down, a check is done on the key release to reset the blending colour to white.