Algodoo

++Distance
++Target Angle
++Laser Angle

++Detects collidesets except G
++All variables can be found in the red box (a=angle, aa=target angle, aaa=distance)
++Grey area can be set to any collideset
++Red area is set to all collidesets (can be changed through scripting)
++Simple consists of only 4 objects including the lasers
++Reliable doesn't use moving parts or hinges so it can't break
++Scaleable
++Phunlet Safe no scene.my variables
++Updates every frame
++when attaching it to something, attach to the grey are and keep the red outlined area outside the object

--You cannot change the color of the invisible red box but you can remove the border if you dont like the red
--You cannot change the size of the lasers by themselves but you can scale the entire rangefinder together

thanks to ramamalum for the idea

please give credit to me if you use it but you don't have to