Globals

• xDir, yDir -- Remember the direction of mouse dragging
• lastX, lastY -- Remember the last mouse position

Mouse Events

• mousePressed() -- Mouse Down Event
• mouseDragged() -- Mouse Dragged Event
• mouseReleased() -- Mouse Up Event
• mouseClicked() -- Mouse Clicked (down-up) Event

Touch Events

Basically equivalent to the Mouse events, just for a touch-screen:

• touchStarted() -- calls mousePressed
• touchMoved() -- calls mouseDragged
• touchEnded() -- calls mouseReleased and mouseClicked

Hovering Function

• Bool hovering(String buttonName) -- Is the mouse hovering over a specific button?