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raze/source/games/duke/src/prediction.cpp

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//-------------------------------------------------------------------------
/*
Copyright (C) 1996, 2003 - 3D Realms Entertainment
Copyright (C) 2020 - Christoph Oelckers
This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
Duke Nukem 3D 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
aint with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Original Source: 1996 - Todd Replogle
Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
Modifications for JonoF's port by Jonathon Fowler (jf@jonof.id.au)
*/
//-------------------------------------------------------------------------
#include "ns.h" // Must come before everything else!
#include "duke3d.h"
#include "m_argv.h"
#include "mapinfo.h"
#include "texturemanager.h"
BEGIN_DUKE_NS
int myx, omyx, myxvel, myy, omyy, myyvel, myz, omyz, myzvel;
short globalskillsound;
binangle myang, omyang;
fixedhoriz myhoriz, omyhoriz, myhorizoff, omyhorizoff;
short mycursectnum, myjumpingcounter;
char myjumpingtoggle, myonground, myhardlanding,myreturntocenter;
int fakemovefifoplc;
int myxbak[MOVEFIFOSIZ], myybak[MOVEFIFOSIZ], myzbak[MOVEFIFOSIZ];
int myhorizbak[MOVEFIFOSIZ];
short myangbak[MOVEFIFOSIZ];
void resetmys()
{
myx = omyx = ps[myconnectindex].posx;
myy = omyy = ps[myconnectindex].posy;
myz = omyz = ps[myconnectindex].posz;
myxvel = myyvel = myzvel = 0;
myang = myang = ps[myconnectindex].angle.ang;
myhoriz = omyhoriz = ps[myconnectindex].horizon.horiz;
myhorizoff = omyhorizoff = ps[myconnectindex].horizon.horizoff;
mycursectnum = ps[myconnectindex].cursectnum;
myjumpingcounter = ps[myconnectindex].jumping_counter;
myjumpingtoggle = ps[myconnectindex].jumping_toggle;
myonground = ps[myconnectindex].on_ground;
myhardlanding = ps[myconnectindex].hard_landing;
}
#if 0 // todo: fix this when networking works again
void fakedomovethingscorrect(void)
{
int i;
struct player_struct *p;
if (numplayers < 2) return;
i = ((movefifoplc-1)&(MOVEFIFOSIZ-1));
p = &ps[myconnectindex];
if (p->posx == myxbak[i] && p->posy == myybak[i] && p->posz == myzbak[i]
&& p->horiz == myhorizbak[i] && p->ang == myangbak[i]) return;
myx = p->posx; omyx = p->oposx; myxvel = p->posxv;
myy = p->posy; omyy = p->oposy; myyvel = p->posyv;
myz = p->posz; omyz = p->oposz; myzvel = p->poszv;
myang = p->ang; omyang = p->oang;
mycursectnum = p->cursectnum;
myhoriz = p->horiz; omyhoriz = p->ohoriz;
myhorizoff = p->horizoff; omyhorizoff = p->ohorizoff;
myjumpingcounter = p->jumping_counter;
myjumpingtoggle = p->jumping_toggle;
myonground = p->on_ground;
myhardlanding = p->hard_landing;
fakemovefifoplc = movefifoplc;
while (fakemovefifoplc < movefifoend[myconnectindex])
fakedomovethings();
}
// This still needs fixing for the magic numbers in the input bits
void fakedomovethings(void)
{
input *syn;
struct player_struct *p;
int i, j, k, doubvel, fz, cz, x, y;
Collision clz, chz;
short psect, psectlotag, tempsect, backcstat;
uint8_t shrunk, spritebridge;
ESyncBits actions;
syn = (input *)&inputfifo[fakemovefifoplc&(MOVEFIFOSIZ-1)][myconnectindex];
p = &ps[myconnectindex];
backcstat = p->GetActor()->s.cstat;
p->GetActor()->s.cstat &= ~257;
actions = syn->actions;
psect = mycursectnum;
psectlotag = sector[psect].lotag;
spritebridge = 0;
shrunk = (p->GetActor()->s.yrepeat < (isRR()? 8 : 32));
if( ud.clipping == 0 && ( sector[psect].floorpicnum == MIRROR || psect < 0 || psect >= MAXSECTORS) )
{
myx = omyx;
myy = omyy;
}
else
{
omyx = myx;
omyy = myy;
}
omyhoriz = myhoriz;
omyhorizoff = myhorizoff;
omyz = myz;
omyang = myang;
getzrange(myx,myy,myz,psect,&cz,chz,&fz,clz,163L,CLIPMASK0);
j = getflorzofslope(psect,myx,myy);
if(clz.type == kHitSector && psectlotag == 1 && abs(myz-j) > gs.playerheight+(16<<8) )
psectlotag = 0;
if( p->aim_mode == 0 && myonground && psectlotag != 2 && (sector[psect].floorstat&2) )
{
x = myx + bcos(myang, -5);
y = myy + bsin(myang, -5);
tempsect = psect;
updatesector(x,y,&tempsect);
if (tempsect >= 0)
{
k = getflorzofslope(psect,x,y);
if (psect == tempsect)
myhorizoff += MulScale(j-k,160, 16);
else if (abs(getflorzofslope(tempsect,x,y)-k) <= (4<<8))
myhorizoff += MulScale(j-k,160, 16);
}
}
if (myhorizoff > 0) myhorizoff -= ((myhorizoff>>3)+1);
else if (myhorizoff < 0) myhorizoff += (((-myhorizoff)>>3)+1);
if(chz.type == kHitSprite)
{
if (chz.actor->s.statnum == 1 && chz.actor->s.extra >= 0)
{
chz.type = kHitNone;
cz = getceilzofslope(psect,myx,myy);
}
}
if (clz.type == kHitSprite)
{
if ((clz.actor->s.cstat&33) == 33)
{
psectlotag = 0;
spritebridge = 1;
}
if(badguy(chz.actor) && chz.actor->s.xrepeat > 24 && abs(p->GetActor()->s.z- chz.actor->s.z) < (84<<8) )
{
j = getangle(chz.actor->s.x-myx, chz.actor->s.y-myy);
myxvel -= bcos(j, 4);
myyvel -= bsin(j, 4);
}
}
if( p->GetActor()->s.extra <= 0 )
{
if( psectlotag == 2 )
{
if(p->on_warping_sector == 0)
{
if( abs(myz-fz) > (gs.playerheight>>1))
myz += 348;
}
clipmove(&myx,&myy,&myz,&mycursectnum,0,0,164L,(4L<<8),(4L<<8),CLIPMASK0);
}
updatesector(myx,myy,&mycursectnum);
pushmove(&myx,&myy,&myz,&mycursectnum,128L,(4L<<8),(20L<<8),CLIPMASK0);
myhoriz = 100;
myhorizoff = 0;
goto ENDFAKEPROCESSINPUT;
}
doubvel = TICSPERFRAME;
if(p->on_crane != nullptr) goto FAKEHORIZONLY;
if(p->angle.spin.asbam() < 0) myang += 128;
i = 40;
if( psectlotag == 2)
{
myjumpingcounter = 0;
if ( (sb_snum&1) && !(p->OnMotorcycle || p->OnBoat) )
{
if(myzvel > 0) myzvel = 0;
myzvel -= 348;
if(myzvel < -(256*6)) myzvel = -(256*6);
}
else if ( (sb_snum&(1<<1)) && !(p->OnMotorcycle || p->OnBoat) )
{
if(myzvel < 0) myzvel = 0;
myzvel += 348;
if(myzvel > (256*6)) myzvel = (256*6);
}
else
{
if(myzvel < 0)
{
myzvel += 256;
if(myzvel > 0)
myzvel = 0;
}
if(myzvel > 0)
{
myzvel -= 256;
if(myzvel < 0)
myzvel = 0;
}
}
if(myzvel > 2048) myzvel >>= 1;
myz += myzvel;
if(myz > (fz-(15<<8)) )
myz += ((fz-(15<<8))-myz)>>1;
if(myz < (cz+(4<<8)) )
{
myz = cz+(4<<8);
myzvel = 0;
}
}
else if(p->jetpack_on)
{
myonground = 0;
myjumpingcounter = 0;
myhardlanding = 0;
if(p->jetpack_on < 11)
myz -= (p->jetpack_on<<7); //Goin up
if(shrunk) j = 512;
else j = 2048;
if ((sb_snum&1) && !(p->OnMotorcycle || p->OnBoat))
myz -= j;
if ((sb_snum&(1<<1)) && !(p->OnMotorcycle || p->OnBoat))
myz += j;
if(shrunk == 0 && ( psectlotag == 0 || psectlotag == 2 ) ) k = 32;
else k = 16;
if(myz > (fz-(k<<8)) )
myz += ((fz-(k<<8))-myz)>>1;
if(myz < (cz+(18<<8)) )
myz = cz+(18<<8);
}
else if( psectlotag != 2 )
{
if (psectlotag == 1 && p->spritebridge == 0)
{
if(shrunk == 0) i = 34;
else i = 12;
}
if(myz < (fz-(i<<8)) && (floorspace(psect)|ceilingspace(psect)) == 0 ) //falling
{
if( (sb_snum&3) == 0 && !(p->OnMotorcycle || p->OnBoat) && myonground && (sector[psect].floorstat&2) && myz >= (fz-(i<<8)-(16<<8) ) )
myz = fz-(i<<8);
else
{
myonground = 0;
myzvel += (gs.gravity+80);
if(myzvel >= (4096+2048)) myzvel = (4096+2048);
}
}
else
{
if(psectlotag != 1 && psectlotag != 2 && myonground == 0 && myzvel > (6144>>1))
myhardlanding = myzvel>>10;
myonground = 1;
if(i==40)
{
//Smooth on the ground
k = ((fz-(i<<8))-myz)>>1;
if( abs(k) < 256 ) k = 0;
myz += k; // ((fz-(i<<8))-myz)>>1;
myzvel -= 768; // 412;
if(myzvel < 0) myzvel = 0;
}
else if(myjumpingcounter == 0)
{
myz += ((fz-(i<<7))-myz)>>1; //Smooth on the water
if(p->on_warping_sector == 0 && myz > fz-(16<<8))
{
myz = fz-(16<<8);
myzvel >>= 1;
}
}
if( (sb_snum&2) && !(p->OnMotorcycle || p->OnBoat) )
myz += (2048+768);
if( (sb_snum&1) == 0 && !(p->OnMotorcycle || p->OnBoat) && myjumpingtoggle == 1)
myjumpingtoggle = 0;
else if( (sb_snum&1) && !(p->OnMotorcycle || p->OnBoat) && myjumpingtoggle == 0 )
{
if( myjumpingcounter == 0 )
if( (fz-cz) > (56<<8) )
{
myjumpingcounter = 1;
myjumpingtoggle = 1;
}
}
if(!isRR() && myjumpingcounter && (sb_snum&1) == 0 )
myjumpingcounter = 0;
}
if(myjumpingcounter)
{
if( (sb_snum&1) == 0 && !(p->OnMotorcycle || p->OnBoat) && myjumpingtoggle == 1)
myjumpingtoggle = 0;
if( myjumpingcounter < (1024+256) )
{
if(psectlotag == 1 && myjumpingcounter > 768)
{
myjumpingcounter = 0;
myzvel = -512;
}
else
{
myzvel -= bsin(128 + myjumpingcounter) / 12;
myjumpingcounter += 180;
myonground = 0;
}
}
else
{
myjumpingcounter = 0;
myzvel = 0;
}
}
myz += myzvel;
if(myz < (cz+(4<<8)) )
{
myjumpingcounter = 0;
if(myzvel < 0) myxvel = myyvel = 0;
myzvel = 128;
myz = cz+(4<<8);
}
}
if (movementBlocked(snum) || myhardlanding)
{
doubvel = 0;
myxvel = 0;
myyvel = 0;
}
else if ( syn->avel ) //p->ang += syncangvel * constant
{ //ENGINE calculates angvel for you
int tempang;
tempang = syn->avel<<1;
if(psectlotag == 2)
myang += (tempang-(tempang>>3))*Sgn(doubvel);
else myang += (tempang)*Sgn(doubvel);
myang &= 2047;
}
if ( myxvel || myyvel || syn->fvel || syn->svel )
{
if(p->steroids_amount > 0 && p->steroids_amount < 400)
doubvel <<= 1;
myxvel += ((syn->fvel*doubvel)<<6);
myyvel += ((syn->svel*doubvel)<<6);
if( ( p->curr_weapon == KNEE_WEAPON && p->kickback_pic > 10 && myonground ) || ( myonground && (sb_snum&2) && !(p->OnMotorcycle || p->OnBoat)) )
{
myxvel = MulScale(myxvel,gs.playerfriction-0x2000, 16);
myyvel = MulScale(myyvel,gs.playerfriction-0x2000, 16);
}
else
{
if(psectlotag == 2)
{
myxvel = MulScale(myxvel,gs.playerfriction-0x1400, 16);
myyvel = MulScale(myyvel,gs.playerfriction-0x1400, 16);
}
else
{
myxvel = MulScale(myxvel,gs.playerfriction, 16);
myyvel = MulScale(myyvel,gs.playerfriction, 16);
}
}
if( abs(myxvel) < 2048 && abs(myyvel) < 2048 )
myxvel = myyvel = 0;
if( shrunk )
{
myxvel =
MulScale(myxvel,(gs.playerfriction)-(gs.playerfriction>>1)+(gs.playerfriction>>2), 16);
myyvel =
MulScale(myyvel,(gs.playerfriction)-(gs.playerfriction>>1)+(gs.playerfriction>>2), 16);
}
}
FAKEHORIZONLY:
if(psectlotag == 1 || spritebridge == 1) i = (4L<<8); else i = (20L<<8);
clipmove(&myx,&myy,&myz,&mycursectnum,myxvel,myyvel,164L,4L<<8,i,CLIPMASK0);
pushmove(&myx,&myy,&myz,&mycursectnum,164L,4L<<8,4L<<8,CLIPMASK0);
if( p->jetpack_on == 0 && psectlotag != 1 && psectlotag != 2 && shrunk)
myz += 30<<8;
if ((sb_snum&(1<<18)) || myhardlanding)
myreturntocenter = 9;
if (sb_snum&(1<<13))
{
myreturntocenter = 9;
if (sb_snum&(1<<5)) myhoriz += 6;
myhoriz += 6;
}
else if (sb_snum&(1<<14))
{
myreturntocenter = 9;
if (sb_snum&(1<<5)) myhoriz -= 6;
myhoriz -= 6;
}
else if ((sb_snum&(1<<3)) && !(p->OnMotorcycle || p->OnBoat))
{
if (sb_snum&(1<<5)) myhoriz += 6;
myhoriz += 6;
}
else if ((sb_snum&(1<<4)) && !(p->OnMotorcycle || p->OnBoat))
{
if (sb_snum&(1<<5)) myhoriz -= 6;
myhoriz -= 6;
}
if (myreturntocenter > 0)
if ((sb_snum&(1<<13)) == 0 && (sb_snum&(1<<14)) == 0)
{
myreturntocenter--;
myhoriz += 33-(myhoriz/3);
}
if(p->aim_mode)
myhoriz += syn->horz>>1;
else
{
if( myhoriz > 95 && myhoriz < 105) myhoriz = 100;
if( myhorizoff > -5 && myhorizoff < 5) myhorizoff = 0;
}
if (myhardlanding > 0)
{
myhardlanding--;
myhoriz -= (myhardlanding<<4);
}
myhoriz = clamp(myhoriz, HORIZ_MIN, HORIZ_MAX);
if(p->knee_incs > 0)
{
myhoriz -= 48;
myreturntocenter = 9;
}
ENDFAKEPROCESSINPUT:
myxbak[fakemovefifoplc&(MOVEFIFOSIZ-1)] = myx;
myybak[fakemovefifoplc&(MOVEFIFOSIZ-1)] = myy;
myzbak[fakemovefifoplc&(MOVEFIFOSIZ-1)] = myz;
myangbak[fakemovefifoplc&(MOVEFIFOSIZ-1)] = myang;
myhorizbak[fakemovefifoplc&(MOVEFIFOSIZ-1)] = myhoriz;
fakemovefifoplc++;
p->GetActor()->s.cstat = backcstat;
}
#endif
END_DUKE_NS
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