Converting World Coordinates to Screen Coordinates

This script is an example of the implementation of displaying on-screen objects (texture sprite, text, rectangles, etc.) with reference to the 3D coordinates of the game world.

Its purpose is to explain to those who wish the principles of converting world 3D coordinates into on-screen 2D coordinates,

as well as the principle of obtaining the size of an on-screen object, which depends on the distance between the player and the coordinates to which the drawing of the object is attached.

In this example, the coordinates are taken just above the "$" pickup truck on Grove Street.

The script does not carry a semantic load in the game, it is needed to develop new scripts using the transformation of world 3D coordinates into on-screen 2D coordinates.

An example of a possible use:

- when writing a script for shopping in a store to display the quantity/price of an item right above that item

- displaying the name of the interior above the marker