ref: 64092431a97c9a32332a56e8d0819dedbaa5f1d9
dir: /src/heretic/p_plats.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_plats.c
#include "doomdef.h"
#include "i_system.h"
#include "m_random.h"
#include "p_local.h"
#include "s_sound.h"
#include "v_video.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 (!(leveltime & 31))
{
S_StartSound(&plat->sector->soundorg, sfx_stnmov);
}
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 downWaitUpStay:
P_RemoveActivePlat(plat);
break;
case raiseAndChange:
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);
}
else
{
if (!(leveltime & 31))
{
S_StartSound(&plat->sector->soundorg,
sfx_stnmov);
}
}
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 = §ors[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 = 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;
sec->special = 0; // NO MORE DAMAGE, IF APPLICABLE
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 = 35 * 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 = 35 * 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 = 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 = 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!");
}