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-rw-r--r--src/doom/p_plats.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/src/doom/p_plats.c b/src/doom/p_plats.c
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+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 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.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+// Plats (i.e. elevator platforms) code, raising/lowering.
+//
+//-----------------------------------------------------------------------------
+
+#include <stdio.h>
+
+#include "i_system.h"
+#include "z_zone.h"
+#include "m_random.h"
+
+#include "doomdef.h"
+#include "p_local.h"
+
+#include "s_sound.h"
+
+// State.
+#include "doomstat.h"
+#include "r_state.h"
+
+// Data.
+#include "sounds.h"
+
+
+plat_t* activeplats[MAXPLATS];
+
+
+
+//
+// Move a plat up and down
+//
+void T_PlatRaise(plat_t* plat)
+{
+ result_e res;
+
+ switch(plat->status)
+ {
+ case up:
+ res = T_MovePlane(plat->sector,
+ plat->speed,
+ plat->high,
+ plat->crush,0,1);
+
+ if (plat->type == raiseAndChange
+ || plat->type == raiseToNearestAndChange)
+ {
+ if (!(leveltime&7))
+ S_StartSound(&plat->sector->soundorg, sfx_stnmov);
+ }
+
+
+ if (res == crushed && (!plat->crush))
+ {
+ plat->count = plat->wait;
+ plat->status = down;
+ S_StartSound(&plat->sector->soundorg, sfx_pstart);
+ }
+ else
+ {
+ if (res == pastdest)
+ {
+ plat->count = plat->wait;
+ plat->status = waiting;
+ S_StartSound(&plat->sector->soundorg, sfx_pstop);
+
+ switch(plat->type)
+ {
+ case blazeDWUS:
+ case downWaitUpStay:
+ P_RemoveActivePlat(plat);
+ break;
+
+ case raiseAndChange:
+ case raiseToNearestAndChange:
+ P_RemoveActivePlat(plat);
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ break;
+
+ case down:
+ res = T_MovePlane(plat->sector,plat->speed,plat->low,false,0,-1);
+
+ if (res == pastdest)
+ {
+ plat->count = plat->wait;
+ plat->status = waiting;
+ S_StartSound(&plat->sector->soundorg,sfx_pstop);
+ }
+ break;
+
+ case waiting:
+ if (!--plat->count)
+ {
+ if (plat->sector->floorheight == plat->low)
+ plat->status = up;
+ else
+ plat->status = down;
+ S_StartSound(&plat->sector->soundorg,sfx_pstart);
+ }
+ case in_stasis:
+ break;
+ }
+}
+
+
+//
+// Do Platforms
+// "amount" is only used for SOME platforms.
+//
+int
+EV_DoPlat
+( line_t* line,
+ plattype_e type,
+ int amount )
+{
+ plat_t* plat;
+ int secnum;
+ int rtn;
+ sector_t* sec;
+
+ secnum = -1;
+ rtn = 0;
+
+
+ // Activate all <type> plats that are in_stasis
+ switch(type)
+ {
+ case perpetualRaise:
+ P_ActivateInStasis(line->tag);
+ break;
+
+ default:
+ break;
+ }
+
+ while ((secnum = P_FindSectorFromLineTag(line,secnum)) >= 0)
+ {
+ sec = &sectors[secnum];
+
+ if (sec->specialdata)
+ continue;
+
+ // Find lowest & highest floors around sector
+ rtn = 1;
+ plat = Z_Malloc( sizeof(*plat), PU_LEVSPEC, 0);
+ P_AddThinker(&plat->thinker);
+
+ plat->type = type;
+ plat->sector = sec;
+ plat->sector->specialdata = plat;
+ plat->thinker.function.acp1 = (actionf_p1) T_PlatRaise;
+ plat->crush = false;
+ plat->tag = line->tag;
+
+ switch(type)
+ {
+ case raiseToNearestAndChange:
+ plat->speed = PLATSPEED/2;
+ sec->floorpic = sides[line->sidenum[0]].sector->floorpic;
+ plat->high = P_FindNextHighestFloor(sec,sec->floorheight);
+ plat->wait = 0;
+ plat->status = up;
+ // NO MORE DAMAGE, IF APPLICABLE
+ sec->special = 0;
+
+ S_StartSound(&sec->soundorg,sfx_stnmov);
+ break;
+
+ case raiseAndChange:
+ plat->speed = PLATSPEED/2;
+ sec->floorpic = sides[line->sidenum[0]].sector->floorpic;
+ plat->high = sec->floorheight + amount*FRACUNIT;
+ plat->wait = 0;
+ plat->status = up;
+
+ S_StartSound(&sec->soundorg,sfx_stnmov);
+ break;
+
+ case downWaitUpStay:
+ plat->speed = PLATSPEED * 4;
+ plat->low = P_FindLowestFloorSurrounding(sec);
+
+ if (plat->low > sec->floorheight)
+ plat->low = sec->floorheight;
+
+ plat->high = sec->floorheight;
+ plat->wait = TICRATE*PLATWAIT;
+ plat->status = down;
+ S_StartSound(&sec->soundorg,sfx_pstart);
+ break;
+
+ case blazeDWUS:
+ plat->speed = PLATSPEED * 8;
+ plat->low = P_FindLowestFloorSurrounding(sec);
+
+ if (plat->low > sec->floorheight)
+ plat->low = sec->floorheight;
+
+ plat->high = sec->floorheight;
+ plat->wait = TICRATE*PLATWAIT;
+ plat->status = down;
+ S_StartSound(&sec->soundorg,sfx_pstart);
+ break;
+
+ case perpetualRaise:
+ plat->speed = PLATSPEED;
+ plat->low = P_FindLowestFloorSurrounding(sec);
+
+ if (plat->low > sec->floorheight)
+ plat->low = sec->floorheight;
+
+ plat->high = P_FindHighestFloorSurrounding(sec);
+
+ if (plat->high < sec->floorheight)
+ plat->high = sec->floorheight;
+
+ plat->wait = TICRATE*PLATWAIT;
+ plat->status = P_Random()&1;
+
+ S_StartSound(&sec->soundorg,sfx_pstart);
+ break;
+ }
+ P_AddActivePlat(plat);
+ }
+ return rtn;
+}
+
+
+
+void P_ActivateInStasis(int tag)
+{
+ int i;
+
+ for (i = 0;i < MAXPLATS;i++)
+ if (activeplats[i]
+ && (activeplats[i])->tag == tag
+ && (activeplats[i])->status == in_stasis)
+ {
+ (activeplats[i])->status = (activeplats[i])->oldstatus;
+ (activeplats[i])->thinker.function.acp1
+ = (actionf_p1) T_PlatRaise;
+ }
+}
+
+void EV_StopPlat(line_t* line)
+{
+ int j;
+
+ for (j = 0;j < MAXPLATS;j++)
+ if (activeplats[j]
+ && ((activeplats[j])->status != in_stasis)
+ && ((activeplats[j])->tag == line->tag))
+ {
+ (activeplats[j])->oldstatus = (activeplats[j])->status;
+ (activeplats[j])->status = in_stasis;
+ (activeplats[j])->thinker.function.acv = (actionf_v)NULL;
+ }
+}
+
+void P_AddActivePlat(plat_t* plat)
+{
+ int i;
+
+ for (i = 0;i < MAXPLATS;i++)
+ if (activeplats[i] == NULL)
+ {
+ activeplats[i] = plat;
+ return;
+ }
+ I_Error ("P_AddActivePlat: no more plats!");
+}
+
+void P_RemoveActivePlat(plat_t* plat)
+{
+ int i;
+ for (i = 0;i < MAXPLATS;i++)
+ if (plat == activeplats[i])
+ {
+ (activeplats[i])->sector->specialdata = NULL;
+ P_RemoveThinker(&(activeplats[i])->thinker);
+ activeplats[i] = NULL;
+
+ return;
+ }
+ I_Error ("P_RemoveActivePlat: can't find plat!");
+}
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