ref: 1ef1524440999b45cd0cafd515756001a4c5fae9
dir: /src/heretic/p_tick.c/
// // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 1993-2008 Raven Software // Copyright(C) 2005-2014 Simon Howard // // This program 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; either version 2 // of the License, or (at your option) any later version. // // This program 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. See the // GNU General Public License for more details. // // P_tick.c #include "doomdef.h" #include "i_system.h" #include "p_local.h" #include "v_video.h" int leveltime; int TimerGame; /* =============================================================================== THINKERS All thinkers should be allocated by Z_Malloc so they can be operated on uniformly. The actual structures will vary in size, but the first element must be thinker_t. =============================================================================== */ thinker_t thinkercap; // both the head and tail of the thinker list /* =============== = = P_InitThinkers = =============== */ void P_InitThinkers(void) { thinkercap.prev = thinkercap.next = &thinkercap; } /* =============== = = P_AddThinker = = Adds a new thinker at the end of the list = =============== */ void P_AddThinker(thinker_t * thinker) { thinkercap.prev->next = thinker; thinker->next = &thinkercap; thinker->prev = thinkercap.prev; thinkercap.prev = thinker; } /* =============== = = P_RemoveThinker = = Deallocation is lazy -- it will not actually be freed until its = thinking turn comes up = =============== */ void P_RemoveThinker(thinker_t * thinker) { thinker->function = (think_t) - 1; } /* =============== = = P_AllocateThinker = = Allocates memory and adds a new thinker at the end of the list = =============== */ void P_AllocateThinker(thinker_t * thinker) { } /* =============== = = P_RunThinkers = =============== */ void P_RunThinkers(void) { thinker_t *currentthinker, *nextthinker; currentthinker = thinkercap.next; while (currentthinker != &thinkercap) { if (currentthinker->function == (think_t) - 1) { // time to remove it nextthinker = currentthinker->next; currentthinker->next->prev = currentthinker->prev; currentthinker->prev->next = currentthinker->next; Z_Free(currentthinker); } else { if (currentthinker->function) currentthinker->function(currentthinker); nextthinker = currentthinker->next; } currentthinker = nextthinker; } } //---------------------------------------------------------------------------- // // PROC P_Ticker // //---------------------------------------------------------------------------- void P_Ticker(void) { int i; if (paused) { return; } for (i = 0; i < MAXPLAYERS; i++) { if (playeringame[i]) { P_PlayerThink(&players[i]); } } if (TimerGame) { if (!--TimerGame) { G_ExitLevel(); } } P_RunThinkers(); P_UpdateSpecials(); P_AmbientSound(); leveltime++; }