strategy game problem

[drk necros]

IM trying to make a 2d scrolling strategy game but i ran into a slight problem. I wanted the player to be able to move boxes (in 8 dirrections) by clicking the box and moving the mouse and when the player clicks the box again you would release the box but i dont know how to meet this goal. Also this action can only be used when the player is 100 pixles from the box and no objects are in the way.

[RickyRombo]

*User clicks on box
+Use the advanced direction object to find the float value of the distance between the player and the box, and compare it to be less than 100 (I don't know the parameters off the top of my head) And I don't know about objects in the way. (invisible active detector and set the angle to the direction in between the two or something?)
-Box: Set alterable string "isDragged" to "yes" //Have isDragged be an alterable string of box (obviously)

*Alterable string "isDragged" of box = "yes"
+Repeat while left mouse button is pressed
-Set X position of box to XMouse
-Set Y position of box to YMouse

*Repeat while left mouse button is pressed [NEGATE]
+Alterable string "isDragged" of box = "yes"
-Set Alterable string "isDragged" to = "no"

[drk necros]

thanks i think ill just allow the player move the box even if something is in the way