timer_game_calendar.cpp File Reference

This file implements the timer logic for the game-calendar-timer. More...

#include "../stdafx.h"
#include "../openttd.h"
#include "timer.h"
#include "timer_game_calendar.h"
#include "../vehicle_base.h"
#include "../safeguards.h"

Go to the source code of this file.

Detailed Description

This file implements the timer logic for the game-calendar-timer.

Calendar time is used for technology and time-of-year changes, including:

• Vehicle, airport, station, object introduction and obsolescence
• Vehicle and engine age
• NewGRF variables for visual styles or behavior based on year or time of year (e.g. variable snow line)
• Inflation, since it is tied to original game years. One interpretation of inflation is that it compensates for faster and higher capacity vehicles, another is that it compensates for more established companies. Each of these point to a different choice of calendar versus economy time, but we have to pick one so we follow a previous decision to tie inflation to original TTD game years.

Definition in file timer_game_calendar.cpp.