Adding a Heads-up Display
Most games display information onscreen about the players, such as their health, names, any power-ups they may have, or other useful information. This data usually displays near the top of the main game display in what’s known as a Heads-Up Display (HUD)—named after some really cool military hardware that lets pilots see data about their aircraft without looking down at an instrument panel.
You need the Heads-Up Display to render on top of the map, in a smaller font so that it is both easier to read and can contain more detail than you would fit on a layer with huge graphical tiles.
Adding Another Rendering Layer
The game currently has two layers: the map and entities. The HUD lives on a third layer, rendered on top ...
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