mirror of
https://github.com/yquake2/yquake2remaster.git
synced 2024-11-26 06:20:48 +00:00
Refactor the SDL input backend once again.
- Remove the keyq. This linked list was used to work around limitations of the good, old DirectInput API. It's not necessary with SDL. - Inline some functions to others where apropriate and remove unused or unnecessary functions. - Reorder functions into groups. - Update comments. This commits still misses necessary changes to the frontend. They'll be done in subsequential commits.
This commit is contained in:
Yamagi Burmeister
parent
7111f735f7
commit
f80e02ffd9
1 changed files with 222 additions and 279 deletions
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@ -20,7 +20,7 @@
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*
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*
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* =======================================================================
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* =======================================================================
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*
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*
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* This is the Quake II input system backend, written in SDL.
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* This is the Quake II input system backend, implemented with SDL.
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*
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*
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* =======================================================================
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* =======================================================================
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*/
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*/
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@ -89,15 +89,7 @@ static cvar_t *m_yaw;
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static cvar_t *sensitivity;
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static cvar_t *sensitivity;
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static cvar_t *windowed_mouse;
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static cvar_t *windowed_mouse;
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/* Key queue */
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/* ------------------------------------------------------------------ */
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struct
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{
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int key;
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int down;
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} keyq[128];
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int keyq_head = 0;
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int keyq_tail = 0;
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/*
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/*
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* This creepy function translates the SDL
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* This creepy function translates the SDL
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@ -315,168 +307,124 @@ IN_TranslateSDLtoQ2Key(unsigned int keysym)
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return key;
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return key;
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}
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}
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/*
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/* ------------------------------------------------------------------ */
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* Synthesize up and down events for the
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* mousewheel. Quake II is unable to use
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* buttons wich do not generate events.
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*/
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static void
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IN_AddMouseWheelEvents(int key)
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{
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assert(key == K_MWHEELUP || key == K_MWHEELDOWN);
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/* Key down */
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keyq[keyq_head].key = key;
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keyq[keyq_head].down = true;
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keyq_head = (keyq_head + 1) & 127;
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/* Key up */
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keyq[keyq_head].key = key;
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keyq[keyq_head].down = false;
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keyq_head = (keyq_head + 1) & 127;
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}
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/*
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/*
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* Input event processing
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* Updates the input queue state. Called every
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*/
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* frame by the client and does nearly all the
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static void
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* input magic.
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IN_GetEvent(SDL_Event *event)
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{
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unsigned int key;
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#if SDL_VERSION_ATLEAST(2, 0, 0)
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SDL_Keymod modstate = SDL_GetModState();
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#else
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SDLMod modstate = SDL_GetModState();
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#endif
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switch (event->type)
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{
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/* The mouse wheel */
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#if SDL_VERSION_ATLEAST(2, 0, 0)
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case SDL_MOUSEWHEEL:
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IN_AddMouseWheelEvents(event->wheel.y > 0 ? K_MWHEELUP : K_MWHEELDOWN);
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break;
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#endif
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case SDL_MOUSEBUTTONDOWN:
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#if ! SDL_VERSION_ATLEAST(2, 0, 0) // SDL1.2 mousewheel stuff
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if (event->button.button == 4)
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{
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IN_AddMouseWheelEvents(K_MWHEELUP);
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break;
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}
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else if (event->button.button == 5)
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{
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IN_AddMouseWheelEvents(K_MWHEELDOWN);
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break;
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}
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#endif
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// fall-through
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case SDL_MOUSEBUTTONUP:
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// DG: luckily, we don't need that IN_MouseEvent() magic with SDL,
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// as it really sends one event per pressed/released button
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switch( event->button.button )
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{
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case SDL_BUTTON_LEFT:
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key = K_MOUSE1;
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break;
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case SDL_BUTTON_MIDDLE:
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key = K_MOUSE3;
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break;
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case SDL_BUTTON_RIGHT:
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key = K_MOUSE2;
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break;
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case SDL_BUTTON_X1:
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key = K_MOUSE4;
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break;
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case SDL_BUTTON_X2:
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key = K_MOUSE5;
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break;
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default: // WTF, unknown mousebutton
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// TODO: print warning?
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return;
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}
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keyq[keyq_head].key = key;
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keyq[keyq_head].down = event->type == SDL_MOUSEBUTTONDOWN;
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keyq_head = (keyq_head + 1) & 127;
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break;
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/* The user pressed a button */
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case SDL_KEYDOWN:
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/* Fullscreen switch via Alt-Return */
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if ((modstate & KMOD_ALT) && (event->key.keysym.sym == SDLK_RETURN))
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{
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GLimp_ToggleFullscreen();
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break;
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}
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/* Make Shift+Escape toggle the console. This
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really belongs in Key_Event(), but since
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Key_ClearStates() can mess up the internal
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K_SHIFT state let's do it here instead. */
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if ((modstate & KMOD_SHIFT) && (event->key.keysym.sym == SDLK_ESCAPE))
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{
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Cbuf_ExecuteText(EXEC_NOW, "toggleconsole");
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break;
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}
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/* Get the pressed key and add it to the key list */
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key = IN_TranslateSDLtoQ2Key(event->key.keysym.sym);
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if (key)
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{
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keyq[keyq_head].key = key;
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keyq[keyq_head].down = true;
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keyq_head = (keyq_head + 1) & 127;
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}
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break;
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/* The user released a key */
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case SDL_KEYUP:
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/* Get the pressed key and remove it from the key list */
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key = IN_TranslateSDLtoQ2Key(event->key.keysym.sym);
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if (key)
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{
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keyq[keyq_head].key = key;
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keyq[keyq_head].down = false;
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keyq_head = (keyq_head + 1) & 127;
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}
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break;
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}
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}
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/*
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* Updates the input queue state
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*/
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*/
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void
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void
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IN_Update(void)
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IN_Update(void)
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{
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{
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qboolean want_grab;
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qboolean want_grab;
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SDL_Event event;
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SDL_Event event;
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static int protection;
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unsigned int key;
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/* Protection against multiple calls.
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#if SDL_VERSION_ATLEAST(2, 0, 0)
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In theory this should neber trigger. */
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SDL_Keymod modstate;
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if (protection == 1)
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#else
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{
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SDLMod modstate;
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return;
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#endif
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}
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else
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{
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protection = 1;
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}
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/* Get and process an event */
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/* Get and process an event */
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while (SDL_PollEvent(&event))
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while (SDL_PollEvent(&event))
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{
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{
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IN_GetEvent(&event);
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switch (event.type)
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{
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/* The mouse wheel */
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#if SDL_VERSION_ATLEAST(2, 0, 0)
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case SDL_MOUSEWHEEL:
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in_state->Key_Event_fp((event.wheel.y > 0 ? K_MWHEELUP : K_MWHEELDOWN), true);
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in_state->Key_Event_fp((event.wheel.y > 0 ? K_MWHEELUP : K_MWHEELDOWN), false);
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break;
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#endif
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case SDL_MOUSEBUTTONDOWN:
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#if !SDL_VERSION_ATLEAST(2, 0, 0)
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if (event.button.button == 4)
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{
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in_state->Key_Event_fp(K_MWHEELUP, true);
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in_state->Key_Event_fp(K_MWHEELUP, false);
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break;
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}
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else if (event.button.button == 5)
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{
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in_state->Key_Event_fp(K_MWHEELDOWN, true);
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in_state->Key_Event_fp(K_MWHEELDOWN, false);
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break;
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}
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#endif
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case SDL_MOUSEBUTTONUP:
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switch( event.button.button )
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{
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case SDL_BUTTON_LEFT:
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key = K_MOUSE1;
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break;
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case SDL_BUTTON_MIDDLE:
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key = K_MOUSE3;
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break;
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case SDL_BUTTON_RIGHT:
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key = K_MOUSE2;
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break;
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case SDL_BUTTON_X1:
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key = K_MOUSE4;
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break;
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case SDL_BUTTON_X2:
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key = K_MOUSE5;
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break;
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default:
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return;
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}
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in_state->Key_Event_fp(key, (event.type == SDL_MOUSEBUTTONDOWN));
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break;
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/* The user pressed a button */
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case SDL_KEYDOWN:
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modstate = SDL_GetModState();
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/* Fullscreen switch via Alt-Return */
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if ((modstate & KMOD_ALT) && (event.key.keysym.sym == SDLK_RETURN))
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{
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GLimp_ToggleFullscreen();
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break;
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}
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/* Make Shift+Escape toggle the console. This
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really belongs in Key_Event(), but since
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Key_ClearStates() can mess up the internal
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K_SHIFT state let's do it here instead. */
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if ((modstate & KMOD_SHIFT) && (event.key.keysym.sym == SDLK_ESCAPE))
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{
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Cbuf_ExecuteText(EXEC_NOW, "toggleconsole");
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break;
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}
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/* Get the pressed key and add it to the key list */
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key = IN_TranslateSDLtoQ2Key(event.key.keysym.sym);
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if (key)
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{
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in_state->Key_Event_fp(key, true);
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}
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break;
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/* The user released a key */
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case SDL_KEYUP:
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/* Get the pressed key and remove it from the key list */
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key = IN_TranslateSDLtoQ2Key(event.key.keysym.sym);
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if (key)
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{
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in_state->Key_Event_fp(key, false);
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}
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break;
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}
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}
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}
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/* Get new mouse coordinates */
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/* Get new mouse coordinates */
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@ -495,130 +443,16 @@ IN_Update(void)
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GLimp_GrabInput(want_grab);
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GLimp_GrabInput(want_grab);
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have_grab = want_grab;
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have_grab = want_grab;
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}
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}
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/* Process the key events */
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while (keyq_head != keyq_tail)
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{
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in_state->Key_Event_fp(keyq[keyq_tail].key, keyq[keyq_tail].down);
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keyq_tail = (keyq_tail + 1) & 127;
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}
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protection = 0;
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}
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}
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/*
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/*
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* Closes all inputs and
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* SDL does all the mouse button processing for
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* clears the input queue.
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* us. Thus no need for this functions, it's
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*/
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* just here to satisfy the frontend.
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void
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IN_Close(void)
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{
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keyq_head = 0;
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keyq_tail = 0;
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memset(keyq, 0, sizeof(keyq));
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}
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/*
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* Centers the view
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*/
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static void
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IN_ForceCenterView(void)
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{
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in_state->viewangles[PITCH] = 0;
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}
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/*
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* Look down
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*/
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static void
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IN_MLookDown(void)
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{
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mlooking = true;
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}
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/*
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* Look up
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*/
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static void
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IN_MLookUp(void)
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{
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mlooking = false;
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in_state->IN_CenterView_fp();
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}
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/*
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* Keyboard initialisation. Called by the client.
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*/
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void
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IN_KeyboardInit(Key_Event_fp_t fp)
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{
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Key_Event_fp = fp;
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/* SDL stuff. Moved here from IN_BackendInit because
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this must be done after video is initialized. */
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#if SDL_VERSION_ATLEAST(2, 0, 0)
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SDL_SetRelativeMouseMode(SDL_TRUE);
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have_grab = GLimp_InputIsGrabbed();
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#else
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SDL_EnableUNICODE(0);
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SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
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have_grab = (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON);
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#endif
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}
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/*
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* Initializes the backend
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*/
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void
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IN_BackendInit(in_state_t *in_state_p)
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{
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in_state = in_state_p;
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exponential_speedup = Cvar_Get("exponential_speedup", "0", CVAR_ARCHIVE);
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freelook = Cvar_Get("freelook", "1", 0);
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in_grab = Cvar_Get("in_grab", "2", CVAR_ARCHIVE);
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in_mouse = Cvar_Get("in_mouse", "0", CVAR_ARCHIVE);
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lookstrafe = Cvar_Get("lookstrafe", "0", 0);
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m_filter = Cvar_Get("m_filter", "0", CVAR_ARCHIVE);
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m_forward = Cvar_Get("m_forward", "1", 0);
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m_pitch = Cvar_Get("m_pitch", "0.022", 0);
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m_side = Cvar_Get("m_side", "0.8", 0);
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m_yaw = Cvar_Get("m_yaw", "0.022", 0);
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sensitivity = Cvar_Get("sensitivity", "3", 0);
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vid_fullscreen = Cvar_Get("vid_fullscreen", "0", CVAR_ARCHIVE);
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windowed_mouse = Cvar_Get("windowed_mouse", "1", CVAR_USERINFO | CVAR_ARCHIVE);
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Cmd_AddCommand("+mlook", IN_MLookDown);
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Cmd_AddCommand("-mlook", IN_MLookUp);
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Cmd_AddCommand("force_centerview", IN_ForceCenterView);
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mouse_x = mouse_y = 0;
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VID_Printf(PRINT_ALL, "Input initialized.\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Shuts the backend down
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
IN_BackendShutdown(void)
|
|
||||||
{
|
|
||||||
Cmd_RemoveCommand("force_centerview");
|
|
||||||
Cmd_RemoveCommand("+mlook");
|
|
||||||
Cmd_RemoveCommand("-mlook");
|
|
||||||
|
|
||||||
VID_Printf(PRINT_ALL, "Input shut down.\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Mouse button handling
|
|
||||||
*/
|
*/
|
||||||
void
|
void
|
||||||
IN_BackendMouseButtons(void)
|
IN_BackendMouseButtons(void)
|
||||||
{
|
{
|
||||||
// nothing to do, we don't need this hack with SDL
|
|
||||||
// the mouse events are generated directly in IN_GetEvent()
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
|
@ -703,3 +537,112 @@ IN_BackendMove(usercmd_t *cmd)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* ------------------------------------------------------------------ */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Closes the inoput device. Unnecessary
|
||||||
|
* for SDL, but requiered by the frontend
|
||||||
|
* API.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
IN_Close(void)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Centers the view
|
||||||
|
*/
|
||||||
|
static void
|
||||||
|
IN_ForceCenterView(void)
|
||||||
|
{
|
||||||
|
in_state->viewangles[PITCH] = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Look down
|
||||||
|
*/
|
||||||
|
static void
|
||||||
|
IN_MLookDown(void)
|
||||||
|
{
|
||||||
|
mlooking = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Look up
|
||||||
|
*/
|
||||||
|
static void
|
||||||
|
IN_MLookUp(void)
|
||||||
|
{
|
||||||
|
mlooking = false;
|
||||||
|
in_state->IN_CenterView_fp();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ------------------------------------------------------------------ */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Keyboard initialisation. Called by the client.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
IN_KeyboardInit(Key_Event_fp_t fp)
|
||||||
|
{
|
||||||
|
Key_Event_fp = fp;
|
||||||
|
|
||||||
|
/* SDL stuff. Moved here from IN_BackendInit because
|
||||||
|
this must be done after video is initialized. */
|
||||||
|
#if SDL_VERSION_ATLEAST(2, 0, 0)
|
||||||
|
SDL_SetRelativeMouseMode(SDL_TRUE);
|
||||||
|
have_grab = GLimp_InputIsGrabbed();
|
||||||
|
#else
|
||||||
|
SDL_EnableUNICODE(0);
|
||||||
|
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
|
||||||
|
have_grab = (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Initializes the backend
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
IN_BackendInit(in_state_t *in_state_p)
|
||||||
|
{
|
||||||
|
in_state = in_state_p;
|
||||||
|
|
||||||
|
exponential_speedup = Cvar_Get("exponential_speedup", "0", CVAR_ARCHIVE);
|
||||||
|
freelook = Cvar_Get("freelook", "1", 0);
|
||||||
|
in_grab = Cvar_Get("in_grab", "2", CVAR_ARCHIVE);
|
||||||
|
in_mouse = Cvar_Get("in_mouse", "0", CVAR_ARCHIVE);
|
||||||
|
lookstrafe = Cvar_Get("lookstrafe", "0", 0);
|
||||||
|
m_filter = Cvar_Get("m_filter", "0", CVAR_ARCHIVE);
|
||||||
|
m_forward = Cvar_Get("m_forward", "1", 0);
|
||||||
|
m_pitch = Cvar_Get("m_pitch", "0.022", 0);
|
||||||
|
m_side = Cvar_Get("m_side", "0.8", 0);
|
||||||
|
m_yaw = Cvar_Get("m_yaw", "0.022", 0);
|
||||||
|
sensitivity = Cvar_Get("sensitivity", "3", 0);
|
||||||
|
vid_fullscreen = Cvar_Get("vid_fullscreen", "0", CVAR_ARCHIVE);
|
||||||
|
windowed_mouse = Cvar_Get("windowed_mouse", "1", CVAR_USERINFO | CVAR_ARCHIVE);
|
||||||
|
|
||||||
|
Cmd_AddCommand("+mlook", IN_MLookDown);
|
||||||
|
Cmd_AddCommand("-mlook", IN_MLookUp);
|
||||||
|
Cmd_AddCommand("force_centerview", IN_ForceCenterView);
|
||||||
|
|
||||||
|
mouse_x = mouse_y = 0;
|
||||||
|
|
||||||
|
VID_Printf(PRINT_ALL, "Input initialized.\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Shuts the backend down
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
IN_BackendShutdown(void)
|
||||||
|
{
|
||||||
|
Cmd_RemoveCommand("force_centerview");
|
||||||
|
Cmd_RemoveCommand("+mlook");
|
||||||
|
Cmd_RemoveCommand("-mlook");
|
||||||
|
|
||||||
|
VID_Printf(PRINT_ALL, "Input shut down.\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ------------------------------------------------------------------ */
|
||||||
|
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue