Return true if the left mouse button has been released on the current frame, and otherwise returns false.

A click differs from being down by only being recorded for one frame, rather then permanently, whilst the button is pressed.

.isLeftClick() { |x, y| ... }

A block can be attached onto 'isLeftClick', which will only be executed if the left mouse button is being click on this frame. This will be passed in the x and y location of the mouse.

/* Player shoots at the mouse location,
 * when the mouse is clicked. */
getControls().isLeftClick() do |x, y|
    player.shootAt( x, y )

See also

isLeftDown - isLeftPressed - isRightClick - isMiddleClick