This action checks for when a mouse button has been released. It will return true on the single game step (frame) that the mouse button is released on and false at all other times. If you enable the not modifier, this action will be reversed, and check if the mouse button has not been released, returning false on the game step (frame) that it has been released on 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:
These actions will now be run if the "if" evaluates to true, while any actions dropped elsewhere will be performed after the "if" block.
Argument | Description |
---|---|
Mouse Button | The name of the mouse button to check (see this page for information on mouse button constants). |
Not | Negate the check (true becomes false and vice versa) |
The above action block code polls the mouse button state every step and if it is being held down it checks for the initial mouse down press. If the check is true on the initial down press the instance speed is set, then, while the button is down, the sprite blending is changed to red. If the mouse is not being held down, a check is done on the mouse release to reset the blending colour to white and set the speed to 0.