Snap to

I do not see how using just one line will help in creating the appropriate code for this. It does not give you any type of reference between the lines. It is the distance between each line that is important and you need at least two lines to produce that. The lines are horizontal and the distance between them is measured vertically; therefore, only the y-coordinate is important as far as finding the correct line. At the point of the mouse releasing the note, you should first determine the y-offset from the top line of the stave. Next, add one less than half the distance between the lines and divide by the distance between the lines. This gives you the index of the line to snap to (starting at zero). Multiplying this by the distance between the lines will give you the offset from the top line of the stave that the note is to snap to.

I can see how it would help. It is a classic example of "breaking a problem into smaller pieces" which is quite often a good way to go about a challenging task. In this case the problem is to snap an object to a line if it is within a certain range of co-ordinates. Can you be clear about your requirement here. Does each line have its own set of co-ordinates that determine when the note snaps to that line, or is there one set of co-ordinates for the stave, and any note dragged within those co-ordinates will snap to the nearest line? In any case, you can check co-ordinates of an actor using the getX() and getY() methods, and compare them to values using 'if' statements. This is quite basic stuff, are you unfamiliar with using those methods and/or if statements? Perhaps you should go through the tutorials and videos. At least have a go at writing some code, and post it. Then we can help you to get it working.

What kind of question is that?!! Do you have an issue with your mouse?? Then ... use keyboard commands.

Please refrain from creating non-constructive posts. davmac might reply with something like this: