World:queryBoundingBox
Calls a function for each fixture inside the specified area by searching for any overlapping bounding box (Fixture:getBoundingBox).
World:queryBoundingBox( topLeftX, topLeftY, bottomRightX, bottomRightY, callback )
topLeftX number The x position of the top-left point.
topLeftY number The y position of the top-left point.
bottomRightX number The x position of the bottom-right point.
bottomRightY number The y position of the bottom-right point.
callback function This function gets passed one argument, the fixture, and should return a boolean. The search will continue if it is true or stop if it is false.