Sprite Drag - Confine to stage

 

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This behavior allows you to drag a sprite around the stage but confine it to the stage boundries.

--Copyright 1999 Chuck Neal --chuck@mediamacros.com --If you find this code helpful, send me an e-mail and let me know.  :-) property spriteNum, clickOffset on mouseDown me   clickOffset = sprite(spriteNum).loc - the mouseLoc   stageWidth = the stageRight- the stageLeft   stageHeight = the stageBottom - the stageTop   leftAdjust = sprite(spriteNum).locH - sprite(spriteNum).left   rightAdjust = sprite(spriteNum).locH - sprite(spriteNum).right   topAdjust = sprite(spriteNum).locV - sprite(spriteNum).top   bottomAdjust = sprite(spriteNum).locV - sprite(spriteNum).bottom   repeat while the stillDown     newLoc = the mouseLoc + clickOffset     if newLoc.locH > stageWidth + rightAdjust then       newLoc.locH = stageWidth + rightAdjust     else if newLoc.locH < 0 + leftAdjust then       newLoc.locH = 0 + leftAdjust     end if     if newLoc.locV > stageHeight + bottomAdjust then       newLoc.locv = stageHeight + bottomAdjust     else if newLoc.locV < 0 + topAdjust then       newLoc.locV = 0 + topAdjust     end if     sprite(spriteNum).loc = newLoc     updateStage   end repeat end on getBehaviorDescription me   return "Drop this on a sprite to make it draggable but constrained to the limites of the stage." end

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