1 /*
2  * This file is part of OpenTTD.
3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6  */
7 
8 /** @file openttd.h Some generic types. */
9 
10 #ifndef OPENTTD_H
11 #define OPENTTD_H
12 
13 #include <atomic>
14 #include "core/enum_type.hpp"
15 
16 /** Mode which defines the state of the game. */
17 enum GameMode {
18 	GM_MENU,
19 	GM_NORMAL,
20 	GM_EDITOR,
21 	GM_BOOTSTRAP
22 };
23 
24 /** Mode which defines what mode we're switching to. */
25 enum SwitchMode {
26 	SM_NONE,
27 	SM_NEWGAME,           ///< New Game --> 'Random game'.
28 	SM_RESTARTGAME,       ///< Restart --> 'Random game' with current settings.
29 	SM_RELOADGAME,        ///< Reload the savegame / scenario / heightmap you started the game with.
30 	SM_EDITOR,            ///< Switch to scenario editor.
31 	SM_LOAD_GAME,         ///< Load game, Play Scenario.
32 	SM_MENU,              ///< Switch to game intro menu.
33 	SM_SAVE_GAME,         ///< Save game.
34 	SM_SAVE_HEIGHTMAP,    ///< Save heightmap.
35 	SM_GENRANDLAND,       ///< Generate random land within scenario editor.
36 	SM_LOAD_SCENARIO,     ///< Load scenario from scenario editor.
37 	SM_START_HEIGHTMAP,   ///< Load a heightmap and start a new game from it.
38 	SM_LOAD_HEIGHTMAP,    ///< Load heightmap from scenario editor.
39 	SM_RESTART_HEIGHTMAP, ///< Load a heightmap and start a new game from it with current settings.
40 	SM_JOIN_GAME,         ///< Join a network game.
41 };
42 
43 /** Display Options */
44 enum DisplayOptions {
45 	DO_SHOW_TOWN_NAMES     = 0, ///< Display town names.
46 	DO_SHOW_STATION_NAMES  = 1, ///< Display station names.
47 	DO_SHOW_SIGNS          = 2, ///< Display signs.
48 	DO_FULL_ANIMATION      = 3, ///< Perform palette animation.
49 	DO_FULL_DETAIL         = 5, ///< Also draw details of track and roads.
50 	DO_SHOW_WAYPOINT_NAMES = 6, ///< Display waypoint names.
51 	DO_SHOW_COMPETITOR_SIGNS = 7, ///< Display signs, station names and waypoint names of opponent companies. Buoys and oilrig-stations are always shown, even if this option is turned off.
52 };
53 
54 extern GameMode _game_mode;
55 extern SwitchMode _switch_mode;
56 extern std::atomic<bool> _exit_game;
57 extern bool _save_config;
58 
59 /** Modes of pausing we've got */
60 enum PauseMode : byte {
61 	PM_UNPAUSED              = 0,      ///< A normal unpaused game
62 	PM_PAUSED_NORMAL         = 1 << 0, ///< A game normally paused
63 	PM_PAUSED_SAVELOAD       = 1 << 1, ///< A game paused for saving/loading
64 	PM_PAUSED_JOIN           = 1 << 2, ///< A game paused for 'pause_on_join'
65 	PM_PAUSED_ERROR          = 1 << 3, ///< A game paused because a (critical) error
66 	PM_PAUSED_ACTIVE_CLIENTS = 1 << 4, ///< A game paused for 'min_active_clients'
67 	PM_PAUSED_GAME_SCRIPT    = 1 << 5, ///< A game paused by a game script
68 	PM_PAUSED_LINK_GRAPH     = 1 << 6, ///< A game paused due to the link graph schedule lagging
69 
70 	/** Pause mode bits when paused for network reasons. */
71 	PMB_PAUSED_NETWORK = PM_PAUSED_ACTIVE_CLIENTS | PM_PAUSED_JOIN,
72 };
73 DECLARE_ENUM_AS_BIT_SET(PauseMode)
74 
75 /** The current pause mode */
76 extern PauseMode _pause_mode;
77 
78 void AskExitGame();
79 void AskExitToGameMenu();
80 
81 int openttd_main(int argc, char *argv[]);
82 void HandleExitGameRequest();
83 
84 void SwitchToMode(SwitchMode new_mode);
85 
86 bool RequestNewGRFScan(struct NewGRFScanCallback *callback = nullptr);
87 
88 #endif /* OPENTTD_H */
89