source/ps/Globals.h

   1 /* Copyright (C) 2017 Wildfire Games.
   2  * This file is part of 0 A.D.
   3  *
   4  * 0 A.D. is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * 0 A.D. is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef INCLUDED_PS_GLOBALS
  19 #define INCLUDED_PS_GLOBALS
  20
  21 #include "lib/input.h"
  22 #include "lib/frequency_filter.h"
  23 #include "ps/KeyName.h"
  24
  25 #include <unordered_map>
  26
  27 // thin abstraction layer on top of SDL.
  28 // game code should use it instead of SDL_GetMouseState etc. because
  29 // Atlas does not completely emulate SDL (it can only send events).
  30
  31 extern bool g_app_minimized;
  32 extern bool g_app_has_focus;
  33
  34 extern int g_mouse_x, g_mouse_y;
  35
  36 /**
  37  * Indicates whether the mouse is focused on the game window (mouse positions
  38  * should usually be considered inaccurate if this is false)
  39  */
  40 extern bool g_mouse_active;
  41
  42 /**
  43  * g_scancodes: Key states, indexed by SDL_Scancode constants. If an entry is true,
  44  * it represents a pressed key.
  45  * Updated by GlobalsInputHandler in response to key press/release events.
  46  */
  47 extern std::unordered_map<int32_t, bool> g_scancodes;
  48
  49 /**
  50  * g_mouse_buttons: Mouse buttons states, indexed by SDL_BUTTON_* constants.
  51  * If an entry is true, it represents a pressed button.
  52  * Updated by GlobalsInputHandler in response to mouse button up/down events.
  53  *
  54  * Be aware that SDL_BUTTON_* constants start at 1. Therefore,
  55  * g_mouse_buttons[0] is unused. The order of entries is as in KeyName.h for MOUSE_*
  56  */
  57 extern bool g_mouse_buttons[MOUSE_LAST - MOUSE_BASE];
  58
  59 extern InReaction GlobalsInputHandler(const SDL_Event_* ev);
  60
  61 extern PIFrequencyFilter g_frequencyFilter;
  62
  63 #endif // INCLUDED_PS_GLOBALS