45  UI & HUD & Resource Data: Overview

This walkthrough explores the automap interface in the DOOM engine.

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45.1 Automap Interface

You’re looking at the automap interface for the DOOM engine. This header declares the core automap functions integrated into the main loop.

The am_map.h header defines the core functions for controlling and displaying the automap overlay. Let’s look at these function declarations.

45.1.1 File: linuxdoom-1.10/am_map.h (Lines 31–43)

// Declares the core automap functions
boolean AM_Responder(event_t* ev);
void AM_Ticker(void);
void AM_Drawer(void);
void AM_Stop(void);

• AM_Responder processes input events for the automap
• AM_Ticker updates the automap state every game frame
• AM_Drawer renders the automap on screen when active
• AM_Stop force-disables the automap (e.g., at level end)