How it works...

A radar background is displayed on the screen. The center of this circular image represents the position of the player's character. You have created two prefabs; one for red square images to represent each red cube found within the radar distance, and one for yellow circles to represent yellow sphere GameObjects.

The Radar C# script class has been added to the radar UI Image GameObject. This class defines four public variables:

• insideRadarDistance: This value defines the maximum distance in the scene that an object may be from the player to still be included on the radar (objects further than this distance will not be displayed on the radar).
• blipSizePercentage: This public variable allows the developer to decide how large each blip will be, as a proportion of the radar's image.
• rawImageBlipCube and rawImageBlipSphere: These are references to the prefab UI RawImages that are to be used to visually indicate the relative distance and position of cubes and spheres on the radar.

Since there is a lot happening in the code for this recipe, each method will be described in its own section.