How toshow distance between objects in beatiful way?

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Hello, I have a task - to show the distance between the objects along the axis x. And, I need to show the distance between the objects as a line, and on top of the line - in fact the value itself. Is there a ready-made solution for this? If not, in what direction to dig? I can define the distance in numbers, but here’s how to draw a line and display the value on this line? Moreover, a single object can be moved, and the line should be changed.

Is this for the editor or for in-game?

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You need to supply more information. Posting a couple of pictures of what you want might be helpful. - Is this 2D or 3D? - As @jbarba_ballytech asks, is this in the editor or in-game? - If you move one of the objects, do you mean move it on the line or move it out of order to create a path? - Do you restrict objects to be between other objects? There is no read-made solution for problem.

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Ok, thanks for the questions, it is in the game, can move only one object, the second is in place and does not move, it is necessary to draw a line between them and show the distance.

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2 Answers

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You should do this with a line renderer. Look at the script reference, and just set your vertex count to 2 and have one vertex at the start object, one at the end object.

As for text hovering above, there are a whole bunch of ways to do this. The easiest might be a simple OnGUI call. You can get the position of the objects in screen space like so:

Do this for the two objects and then take the average - that’ll give you a point halfway along the line. Move up a little in the y-direction and create your text. You can do that with:

One thing to keep in mind: GUI space is flipped vertically from screen space. GUI assumes that +y is down (you paint from top to bottom), while in screen space +y is up. So you’ll need to do something like:

flippedPos = Screen.height - yPos;
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  • You can draw a line at runtime using the LineRenderer class.
  • Finding the distance between object can be done using Vector3.Distance().
  • But before you can calculate the distance, you are going to have to get a reference to the objects in your script. One way is GameObject.Find().
  • To display the calculated distance you can use GUI.Label().

The more difficult part of your project is drag and drop. If it is a 3D game, then you have the added complexity of how to deal with a 3D environment with a 2D device (mouse/finger). Drag and Drop has been solved on this list 100’s of times. I recommend you start your project with figure out how to drag one game object around the screen.