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physics.c
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/*
Copyright (C) 2005, 2010 - Cryptic Sea
This file is part of Gish.
Gish 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.
*/
#include "../config.h"
#include <string.h>
#include <math.h>
#include "../game/physics.h"
#include "../game/gameaudio.h"
#include "../game/block.h"
#include "../game/game.h"
#include "../game/level.h"
#include "../game/gameobject.h"
#include "../game/sprite.h"
#include "../audio/audio.h"
#include "../math/intersec.h"
#include "../math/vector.h"
#include "../physics/bond.h"
#include "../physics/object.h"
#include "../physics/particle.h"
_physicstemp physicstemp;
int numoflevellines;
_levelline levelline[1024];
void setupphysics(void)
{
int count;
count=1;
particletype[count].drag=0.995f;
particletype[count].gravity=4.0f/(PHYSICSCYCLE*PHYSICSCYCLE);
particletype[count].elasticity=1.2f;
particletype[count].friction=1.2f;
particletype[count].levelcollision=0;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=2;
particletype[count].drag=0.0f;
particletype[count].gravity=0.0f;
particletype[count].elasticity=1.2f;
particletype[count].friction=1.2f;
particletype[count].levelcollision=0;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=3;
particletype[count].drag=0.999f;
particletype[count].gravity=4.0f/(PHYSICSCYCLE*PHYSICSCYCLE);
particletype[count].elasticity=1.2f;
particletype[count].friction=1.2f;
particletype[count].levelcollision=0;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=4;
particletype[count].drag=0.995f;
particletype[count].gravity=4.0f/(PHYSICSCYCLE*PHYSICSCYCLE);
particletype[count].elasticity=1.2f;
particletype[count].friction=0.2f;
particletype[count].levelcollision=1;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=5;
particletype[count].drag=0.99f;
particletype[count].gravity=4.0f/(PHYSICSCYCLE*PHYSICSCYCLE);
particletype[count].elasticity=1.2f;
particletype[count].friction=0.2f;
particletype[count].levelcollision=1;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=6;
particletype[count].drag=0.999f;
particletype[count].gravity=0.0f;
particletype[count].elasticity=1.2f;
particletype[count].friction=0.3f;
particletype[count].levelcollision=1;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=16;
particletype[count].drag=0.999f;
particletype[count].gravity=0.0f;
particletype[count].elasticity=1.2f;
particletype[count].friction=0.3f;
particletype[count].levelcollision=0;
particletype[count].objectcollision=0;
particletype[count].rendertype=0;
count=1;
bondtype[count].elasticity=0.2f;
bondtype[count].cycles=1;
bondtype[count].compression=0.1f;
bondtype[count].tension=1.9f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=2;
bondtype[count].elasticity=0.02f;
bondtype[count].cycles=31;
bondtype[count].compression=0.1f;
bondtype[count].tension=1.9f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=3;
bondtype[count].elasticity=0.2f;
bondtype[count].cycles=3;
bondtype[count].compression=0.1f;
bondtype[count].tension=1.9f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=4;
bondtype[count].elasticity=0.5f;
bondtype[count].cycles=1;
bondtype[count].compression=0.0f;
bondtype[count].tension=1.15f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=5;
bondtype[count].elasticity=0.1f;
bondtype[count].cycles=31;
bondtype[count].compression=0.1f;
bondtype[count].tension=1.9f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=6;
bondtype[count].elasticity=0.2f;
bondtype[count].cycles=15;
bondtype[count].compression=0.75f;
bondtype[count].tension=1.25f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=7;
bondtype[count].elasticity=0.2f;
bondtype[count].cycles=0;
bondtype[count].compression=0.5f;
bondtype[count].tension=1.5f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=8;
bondtype[count].elasticity=0.002f;
bondtype[count].cycles=0;
bondtype[count].compression=0.5f;
bondtype[count].tension=1.5f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=9;
bondtype[count].elasticity=0.2f;
bondtype[count].cycles=0;
bondtype[count].compression=0.5f;
bondtype[count].tension=1.5f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
count=16;
bondtype[count].elasticity=0.1f;
bondtype[count].cycles=31;
bondtype[count].compression=0.5f;
bondtype[count].tension=1.5f;
bondtype[count].rendertype=1;
bondtype[count].rendersize=0.4f;
}
void particlecollision(int particlenum)
{
float vec[3],vec2[3]/*,vec3[3]*/;
float intersectpoint[3];
float normal[3];
float scale;
if (pointintersectlevel(intersectpoint,normal,&scale,particle[particlenum].position))
{
subtractvectors(vec2,intersectpoint,particle[particlenum].position);
scaleaddvectors(vec,particle[particlenum].position,normal,dotproduct(vec2,normal));
physicstemp.bond[physicstemp.numofbonds].part1=particlenum;
physicstemp.bond[physicstemp.numofbonds].type=0;
physicstemp.bond[physicstemp.numofbonds].cycles=3;
physicstemp.bond[physicstemp.numofbonds].length=0.0f;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].friction=particle[particlenum].friction;
if (collision.friction<particle[particlenum].friction)
physicstemp.bond[physicstemp.numofbonds].friction=collision.friction;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=-1;
physicstemp.bond[physicstemp.numofbonds].blocknum=collision.blocknum;
physicstemp.bond[physicstemp.numofbonds].blockx=collision.blockx;
physicstemp.bond[physicstemp.numofbonds].blocky=collision.blocky;
copyvector(physicstemp.bond[physicstemp.numofbonds].point,vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.numofbonds++;
}
}
void objectcollision(int objectnum)
{
int count/*,count2*/;
int part1,part2;
int blocknum;
int particlenum;
int particlelist[2];
float vec[3],vec2[3]/*,vec3[3]*/;
float intersectpoint[3];
float normal[3];
float force[2];
float scale;
//float friction;
copyvector(object[objectnum].prevposition,object[objectnum].position);
if (object[objectnum].numofparticles!=0)
{
zerovector(object[objectnum].position);
for (count=0;count<object[objectnum].numofparticles;count++)
addvectors(object[objectnum].position,object[objectnum].position,particle[object[objectnum].particle[count]].position);
scalevector(object[objectnum].position,object[objectnum].position,1.0f/(float)object[objectnum].numofparticles);
object[objectnum].numoforientations=0;
zerovector(object[objectnum].orientation[1]);
if (object[objectnum].type!=1)
if (object[objectnum].type!=2 || object[objectnum].size[0]>0.5f)
{
getlevellines(objectnum);
for (count=0;count<numoflevellines;count++)
{
if (lineintersectobject(intersectpoint,normal,&scale,levelline[count].line[0],levelline[count].line[1],objectnum,particlelist))
{
part1=particlelist[0];
part2=particlelist[1];
if (dotproduct(normal,levelline[count].normal)<-0.707f)
{
subtractvectors(object[objectnum].orientation[1],object[objectnum].orientation[1],normal);
object[objectnum].numoforientations++;
collision.friction=levelline[count].friction;
collision.blocknum=levelline[count].blocknum;
collision.blockx=levelline[count].blockx;
collision.blocky=levelline[count].blocky;
subtractvectors(vec,intersectpoint,levelline[count].line[1]);
scaleaddvectors(vec2,levelline[count].line[1],normal,dotproduct(vec,normal));
subtractvectors(vec,particle[object[objectnum].particle[part2]].position,particle[object[objectnum].particle[part1]].position);
scale=vectorlength(vec);
subtractvectors(vec,particle[object[objectnum].particle[part1]].position,intersectpoint);
force[0]=vectorlength(vec)/scale;
subtractvectors(vec,particle[object[objectnum].particle[part2]].position,intersectpoint);
force[1]=vectorlength(vec)/scale;
if (force[0]>1.0f)
force[0]=1.0f;
if (force[1]>1.0f)
force[1]=1.0f;
physicstemp.bond[physicstemp.numofbonds].part1=object[objectnum].particle[part1];
physicstemp.bond[physicstemp.numofbonds].part2=object[objectnum].particle[part2];
physicstemp.bond[physicstemp.numofbonds].type=2;
subtractvectors(vec,vec2,intersectpoint);
physicstemp.bond[physicstemp.numofbonds].length=vectorlength(vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].friction=object[objectnum].friction;
if (collision.friction<object[objectnum].friction)
physicstemp.bond[physicstemp.numofbonds].friction=collision.friction;
physicstemp.bond[physicstemp.numofbonds].force[0]=force[1];
physicstemp.bond[physicstemp.numofbonds].force[1]=force[0];
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].objectnum[1]=objectnum;
physicstemp.bond[physicstemp.numofbonds].blocknum=collision.blocknum;
physicstemp.bond[physicstemp.numofbonds].blockx=collision.blockx;
physicstemp.bond[physicstemp.numofbonds].blocky=collision.blocky;
physicstemp.numofbonds++;
}
}
}
}
for (count=0;count<object[objectnum].numofparticles;count++)
{
if (object[objectnum].particlestick[count])
{
scaleaddvectors(object[objectnum].orientation[1],object[objectnum].orientation[1],object[objectnum].particlesticknormal[count],0.5f);
object[objectnum].numoforientations++;
}
particlenum=object[objectnum].particle[count];
if (pointintersectlevel(intersectpoint,normal,&scale,particle[particlenum].position))
{
addvectors(object[objectnum].orientation[1],object[objectnum].orientation[1],normal);
object[objectnum].numoforientations++;
if (object[objectnum].timetolive==10001)
object[objectnum].timetolive=50;
if (object[objectnum].type==OBJ_TYPE_GISH || object[objectnum].type==4)
{
blocknum=collision.blocknum;
if (block[blocknum].animation!=0)
if (block[blocknum].animationspeed!=0)
blocknum+=(game.framenum/block[blocknum].animationspeed)%block[blocknum].animation;
if (block[blocknum].middamage!=0)
{
if (object[objectnum].type==OBJ_TYPE_GISH)
object[objectnum].hitpoints-=block[blocknum].middamage;
if (object[objectnum].type==4)
object[objectnum].hitpoints-=block[blocknum].middamage*4;
}
}
subtractvectors(vec2,intersectpoint,particle[particlenum].position);
scaleaddvectors(vec,particle[particlenum].position,normal,dotproduct(vec2,normal));
physicstemp.bond[physicstemp.numofbonds].part1=particlenum;
physicstemp.bond[physicstemp.numofbonds].type=0;
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].length=0.0f;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].friction=object[objectnum].friction;
if (collision.friction<object[objectnum].friction)
physicstemp.bond[physicstemp.numofbonds].friction=collision.friction;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].blocknum=collision.blocknum;
physicstemp.bond[physicstemp.numofbonds].blockx=collision.blockx;
physicstemp.bond[physicstemp.numofbonds].blocky=collision.blocky;
copyvector(physicstemp.bond[physicstemp.numofbonds].point,vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.numofbonds++;
if ((object[objectnum].button&1)==1 && object[objectnum].type==OBJ_TYPE_GISH)
if (collision.friction>0.1f)
{
if (!object[objectnum].particlestick[count])
{
object[objectnum].particlestick[count]=1;
copyvector(object[objectnum].particlesticknormal[count],normal);
copyvector(object[objectnum].particlestickposition[count],intersectpoint);
physicstemp.bond[physicstemp.numofbonds].part1=object[objectnum].particle[count];
physicstemp.bond[physicstemp.numofbonds].part4=count;
physicstemp.bond[physicstemp.numofbonds].type=1;
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].length=0.0f;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].breakpoint=0.25f;
if (fabs(normal[1])<0.707f)
physicstemp.bond[physicstemp.numofbonds].breakpoint=0.2f;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].blocknum=collision.blocknum;
physicstemp.bond[physicstemp.numofbonds].blockx=collision.blockx;
physicstemp.bond[physicstemp.numofbonds].blocky=collision.blocky;
copyvector(physicstemp.bond[physicstemp.numofbonds].point,vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.numofbonds++;
}
}
}
}
}
}
void objectcollisionobject(int objectnum)
{
int count,count2;
int part1,part2;
int objectcount;
int particlenum;
int particlelist[2];
float vec[3],vec2[3]/*,vec3[3]*/;
float intersectpoint[3];
float normal[3];
float force[2];
float scale;
float friction;
if (object[objectnum].type==3)
for (count=0;count<object[objectnum].numofparticles;count++)
{
particlenum=object[objectnum].particle[count];
for (count2=0;count2<numofropes;count2++)
if (rope[count2].type<=4)
if (lineintersectline(intersectpoint,normal,&scale,object[objectnum].position,particle[object[objectnum].particle[count]].position,particle[rope[count2].part1].position,particle[rope[count2].part2].position))
{
subtractvectors(vec,intersectpoint,particle[particlenum].position);
scaleaddvectors(vec2,particle[particlenum].position,normal,dotproduct(vec,normal));
subtractvectors(vec,particle[rope[count2].part2].position,particle[rope[count2].part1].position);
scale=vectorlength(vec);
subtractvectors(vec,particle[rope[count2].part1].position,intersectpoint);
force[0]=vectorlength(vec)/scale;
subtractvectors(vec,particle[rope[count2].part2].position,intersectpoint);
force[1]=vectorlength(vec)/scale;
if (force[0]>1.0f)
force[0]=1.0f;
if (force[1]>1.0f)
force[1]=1.0f;
physicstemp.bond[physicstemp.numofbonds].part1=rope[count2].part1;
physicstemp.bond[physicstemp.numofbonds].part2=rope[count2].part2;
physicstemp.bond[physicstemp.numofbonds].part3=particlenum;
physicstemp.bond[physicstemp.numofbonds].type=4;
subtractvectors(vec,vec2,intersectpoint);
physicstemp.bond[physicstemp.numofbonds].length=vectorlength(vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].friction=0.8f;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].objectnum[1]=objectnum;
physicstemp.bond[physicstemp.numofbonds].force[0]=force[1];
physicstemp.bond[physicstemp.numofbonds].force[1]=force[0];
physicstemp.bond[physicstemp.numofbonds].blocknum=0;
physicstemp.bond[physicstemp.numofbonds].blockx=0;
physicstemp.bond[physicstemp.numofbonds].blocky=0;
physicstemp.numofbonds++;
}
}
updateogg();
for (objectcount=0;objectcount<numofobjects;objectcount++)
if (objectnum!=objectcount)
if (objecttype[object[objectnum].type].collide[object[objectcount].type])
if ((object[objectnum].type!=2 || object[objectnum].timetolive>175) && (object[objectcount].type!=2 || object[objectcount].timetolive>175))
if (object[objectnum].timetolive>40 && object[objectcount].timetolive>40)
{
subtractvectors(vec,object[objectnum].position,object[objectcount].position);
if (vectorlength(vec)<object[objectnum].radius+object[objectcount].radius)
for (count=0;count<object[objectnum].numofparticles;count++)
{
particlenum=object[objectnum].particle[count];
//for (count2=0;count2<object[objectcount].numofcdlines;count2++)
if (pointintersectobject(intersectpoint,normal,&scale,particle[object[objectnum].particle[count]].position,objectcount,objectnum,particlelist))
{
//part1=object[objectcount].cdline[count2][0];
//part2=object[objectcount].cdline[count2][1];
part1=particlelist[0];
part2=particlelist[1];
//if (lineintersectline2(intersectpoint,normal,&scale,object[objectnum].position,particle[object[objectnum].particle[count]].position,particle[object[objectcount].particle[part1]].position,particle[object[objectcount].particle[part2]].position))
{
scaleaddvectors(object[objectnum].orientation[1],object[objectnum].orientation[1],normal,0.5f);
object[objectnum].numoforientations++;
if (object[objectnum].type==OBJ_TYPE_GISH)
if (game.levelnum==29)
if (objectcount==38)
if (game.godmode==0)
{
game.godmode=1;
playsound(10,object[objectnum].position,NULL,0.4f,0,1.0f,-1,0);
}
if (object[objectnum].type==OBJ_TYPE_GISH)
if (object[objectcount].type==4)
if (object[objectcount].beasttype==15)
object[objectnum].hitpoints--;
if (object[objectnum].type==OBJ_TYPE_GISH)
if (object[objectcount].type==6)
if (object[objectcount].timetolive>16)
{
object[objectcount].timetolive=16;
if (level.gametype==GAMETYPE_2GREED)
{
if (objectnum==0)
game.score[0]++;
if (objectnum==1)
game.score[1]++;
}
}
//subtractvectors(vec,intersectpoint,particle[particlenum].position);
//scaleaddvectors(vec2,particle[particlenum].position,normal,dotproduct(vec,normal));
//copyvector(vec,intersectpoint);
subtractvectors(vec,particle[object[objectcount].particle[part2]].position,particle[object[objectcount].particle[part1]].position);
scale=vectorlength(vec);
subtractvectors(vec,particle[object[objectcount].particle[part1]].position,intersectpoint);
force[0]=vectorlength(vec)/scale;
subtractvectors(vec,particle[object[objectcount].particle[part2]].position,intersectpoint);
force[1]=vectorlength(vec)/scale;
if (force[0]>1.0f)
force[0]=1.0f;
if (force[1]>1.0f)
force[1]=1.0f;
friction=object[objectnum].friction;
if (friction>object[objectcount].friction)
friction=object[objectcount].friction;
physicstemp.bond[physicstemp.numofbonds].part1=object[objectcount].particle[part1];
physicstemp.bond[physicstemp.numofbonds].part2=object[objectcount].particle[part2];
physicstemp.bond[physicstemp.numofbonds].part3=particlenum;
physicstemp.bond[physicstemp.numofbonds].type=4;
subtractvectors(vec,particle[particlenum].position,intersectpoint);
physicstemp.bond[physicstemp.numofbonds].length=vectorlength(vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.bond[physicstemp.numofbonds].cycles=0;
if (object[objectnum].type==2 && object[objectcount].type==2)
if (object[objectnum].size[0]<=0.5f && object[objectcount].size[0]<=0.5f)
physicstemp.bond[physicstemp.numofbonds].cycles=3;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].friction=friction;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].objectnum[1]=objectcount;
physicstemp.bond[physicstemp.numofbonds].force[0]=force[1];
physicstemp.bond[physicstemp.numofbonds].force[1]=force[0];
physicstemp.bond[physicstemp.numofbonds].blocknum=0;
physicstemp.bond[physicstemp.numofbonds].blockx=0;
physicstemp.bond[physicstemp.numofbonds].blocky=0;
physicstemp.numofbonds++;
if ((object[objectnum].button&1)==1 && object[objectnum].type==OBJ_TYPE_GISH)
if (object[objectcount].type!=1 || (object[objectcount].button&4)==0)
{
//if (!object[objectnum].particlestick[count])
{
if (object[objectnum].particlestick[count])
{
for (count2=0;count2<physicstemp.numofbonds;count2++)
if (physicstemp.bond[count2].type==5)
if (physicstemp.bond[count2].objectnum[0]==objectnum)
if (physicstemp.bond[count2].part4==count)
physicstemp.bond[count2].type=-1;
}
object[objectnum].particlestick[count]=1;
physicstemp.bond[physicstemp.numofbonds].part1=object[objectcount].particle[part1];
physicstemp.bond[physicstemp.numofbonds].part2=object[objectcount].particle[part2];
physicstemp.bond[physicstemp.numofbonds].part3=particlenum;
physicstemp.bond[physicstemp.numofbonds].part4=count;
physicstemp.bond[physicstemp.numofbonds].type=5;
physicstemp.bond[physicstemp.numofbonds].length=vectorlength(vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.2f;
physicstemp.bond[physicstemp.numofbonds].breakpoint=0.3f;
if (fabs(normal[1])<0.707f)
physicstemp.bond[physicstemp.numofbonds].breakpoint=0.25f;
if (object[objectcount].type>=3 && object[objectcount].type<=5)
physicstemp.bond[physicstemp.numofbonds].breakpoint*=1.5f;
physicstemp.bond[physicstemp.numofbonds].friction=friction;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=objectnum;
physicstemp.bond[physicstemp.numofbonds].objectnum[1]=objectcount;
physicstemp.bond[physicstemp.numofbonds].force[0]=force[1];
physicstemp.bond[physicstemp.numofbonds].force[1]=force[0];
physicstemp.bond[physicstemp.numofbonds].blocknum=0;
physicstemp.bond[physicstemp.numofbonds].blockx=0;
physicstemp.bond[physicstemp.numofbonds].blocky=0;
physicstemp.numofbonds++;
if (game.oldschool==2)
if (object[objectcount].type==3)
if (game.framenum-game.oldschoolsound>200)
{
playsound(22,object[objectnum].position,NULL,1.0f,0,1.0f,objectnum,1);
game.oldschoolsound=game.framenum;
}
}
}
}
}
}
}
if (level.gametype>=GAMETYPE_2FOOTBALL)
for (objectcount=0;objectcount<numofobjects;objectcount++)
if (object[objectcount].type==OBJ_TYPE_GISH)
{
for (count=0;count<object[objectcount].numofparticles;count++)
{
particlenum=object[objectcount].particle[count];
part1=object[objectcount].particle[((count+4)&15)];
part2=object[objectcount].particle[((count-4)&15)];
//for (count2=-6;count2<6;count2++)
{
//part1=object[objectcount].particle[((count+8+count2)&15)];
//part2=object[objectcount].particle[((count+8+count2+1)&15)];
normal[0]=particle[part2].position[1]-particle[part1].position[1];
normal[1]=particle[part1].position[0]-particle[part2].position[0];
normal[2]=0.0f;
normalizevector(normal,normal);
scaleaddvectors(vec,particle[particlenum].position,normal,1.0f);
if (lineintersectline2(intersectpoint,normal,&scale,vec,particle[particlenum].position,particle[part1].position,particle[part2].position))
{
subtractvectors(vec,particle[part2].position,particle[part1].position);
scale=vectorlength(vec);
if (scale>0.00000001f)
{
subtractvectors(vec,particle[part1].position,intersectpoint);
force[0]=vectorlength(vec)/scale;
subtractvectors(vec,particle[part2].position,intersectpoint);
force[1]=vectorlength(vec)/scale;
}
else
{
force[0]=0.5f;
force[1]=0.5f;
}
if (force[0]>1.0f)
force[0]=1.0f;
if (force[1]>1.0f)
force[1]=1.0f;
physicstemp.bond[physicstemp.numofbonds].part1=part1;
physicstemp.bond[physicstemp.numofbonds].part2=part2;
physicstemp.bond[physicstemp.numofbonds].part3=particlenum;
physicstemp.bond[physicstemp.numofbonds].type=4;
subtractvectors(vec,particle[particlenum].position,intersectpoint);
physicstemp.bond[physicstemp.numofbonds].length=vectorlength(vec);
copyvector(physicstemp.bond[physicstemp.numofbonds].normal,normal);
physicstemp.bond[physicstemp.numofbonds].cycles=0;
physicstemp.bond[physicstemp.numofbonds].elasticity=0.5f;
physicstemp.bond[physicstemp.numofbonds].friction=1.0f;
physicstemp.bond[physicstemp.numofbonds].objectnum[0]=-1;
physicstemp.bond[physicstemp.numofbonds].objectnum[1]=-1;
physicstemp.bond[physicstemp.numofbonds].force[0]=force[1];
physicstemp.bond[physicstemp.numofbonds].force[1]=force[0];
physicstemp.bond[physicstemp.numofbonds].blocknum=0;
physicstemp.bond[physicstemp.numofbonds].blockx=0;
physicstemp.bond[physicstemp.numofbonds].blocky=0;
physicstemp.numofbonds++;
}
}
}
}
}
void bondsimulation2(void)
{
int count,count2;
int part1,part2,part3;
int blocknum;
//unsigned int x;
float vec[3],vec2[3]/*,vec3[3]*/;
float bondnormal[3];
float veclength;
float force[2];
float temp;
float scale;
for (count2=0;count2<physicstemp.numofbonds;count2++)
{
zerovector(physicstemp.bond[count2].forceapplied[0]);
zerovector(physicstemp.bond[count2].forceapplied[1]);
}
for (count2=0;count2<numofbonds;count2++)
{
part1=bond[count2].part1;
part2=bond[count2].part2;
subtractvectors(bond[count2].bondnormal,particle[part2].position,particle[part1].position);
bond[count2].veclength=vectorlength(bond[count2].bondnormal);
normalizevector(bond[count2].bondnormal,bond[count2].bondnormal);
bond[count2].oomass=1.0f/(particle[part1].mass+particle[part2].mass);
}
for (count=0;count<32;count++)
{
updateogg();
for (count2=0;count2<numofparticles;count2++)
copyvector(particle[count2].prevvelocity,particle[count2].velocity);
for (count2=0;count2<numofbonds;count2++)
if ((count&bond[count2].cycles)==0)
{
part1=bond[count2].part1;
part2=bond[count2].part2;
temp=bond[count2].veclength;
veclength=temp-bond[count2].length;
copyvector(bondnormal,bond[count2].bondnormal);
zerovector(vec);
scaleaddvectors2(vec,vec,particle[part2].prevvelocity,1.0f);
scaleaddvectors2(vec,vec,particle[part1].prevvelocity,-1.0f);
veclength+=dotproduct(vec,bondnormal);
if (bondtype[bond[count2].type].compression==0.0f)
if (veclength<0.0f)
veclength=0.0f;
veclength*=bond[count2].elasticity;
//if (bond[count2].type==2 && temp<bond[count2].length*0.35f)
// veclength*=10.0f;
if (bond[count2].type==2 && temp<bond[count2].length*0.25f)
bond[count2].cycles=0;
veclength*=bond[count2].oomass;
force[0]=veclength*particle[part2].mass;
force[1]=veclength*particle[part1].mass;
scaleaddvectors2(particle[part1].velocity,particle[part1].velocity,bondnormal,force[0]);
scaleaddvectors2(particle[part2].velocity,particle[part2].velocity,bondnormal,-force[1]);
}
for (count2=0;count2<physicstemp.numofbonds;count2++)
if ((count&physicstemp.bond[count2].cycles)==0)
{
if (physicstemp.bond[count2].type==0)
{
part1=physicstemp.bond[count2].part1;
subtractvectors2(bondnormal,physicstemp.bond[count2].point,particle[part1].position);
scalevector2(vec,bondnormal,0.2f);
veclength=(vectorlength(bondnormal)-physicstemp.bond[count2].length);
scaleaddvectors2(vec,vec,particle[part1].prevvelocity,-1.0f);
if (dotproduct(vec,physicstemp.bond[count2].normal)>0.0f)
{
scalevector2(vec,vec,physicstemp.bond[count2].elasticity);
calculatefriction(vec,vec2,physicstemp.bond[count2].normal,physicstemp.bond[count2].friction);
addvectors2(vec,vec,vec2);
addvectors2(particle[part1].velocity,particle[part1].velocity,vec);
if (particle[part1].type!=5)
{
addvectors2(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].forceapplied[0],vec);
if (block[physicstemp.bond[count2].blocknum].breakpoint!=0.0f)
{
level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]+=vectorlength(vec)*particle[part1].mass;
if (level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]>block[physicstemp.bond[count2].blocknum].breakpoint)
physicstemp.bond[count2].type=-1;
}
}
}
}
if (physicstemp.bond[count2].type==1)
{
part1=physicstemp.bond[count2].part1;
subtractvectors2(bondnormal,physicstemp.bond[count2].point,particle[part1].position);
scalevector2(vec,bondnormal,1.0f);
veclength=(vectorlength(bondnormal)-physicstemp.bond[count2].length);
scaleaddvectors2(vec,vec,particle[part1].prevvelocity,-1.0f);
veclength=(vectorlength(bondnormal)-physicstemp.bond[count2].length)-dotproduct(bondnormal,particle[part1].prevvelocity)/vectorlength(bondnormal);
scalevector2(vec,vec,physicstemp.bond[count2].elasticity);
scalevector2(vec,vec,0.04f);
addvectors2(particle[part1].velocity,particle[part1].velocity,vec);
addvectors2(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].forceapplied[0],vec);
if (block[physicstemp.bond[count2].blocknum].breakpoint!=0.0f)
{
level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]+=vectorlength(vec)*particle[part1].mass;
if (level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]>block[physicstemp.bond[count2].blocknum].breakpoint || level.gridmod[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]!=0)
{
physicstemp.bond[count2].type=-1;
object[physicstemp.bond[count2].objectnum[0]].particlestick[physicstemp.bond[count2].part4]=0;
}
}
}
if (physicstemp.bond[count2].type==2)
{
part1=physicstemp.bond[count2].part1;
part2=physicstemp.bond[count2].part2;
scalevector2(bondnormal,physicstemp.bond[count2].normal,-physicstemp.bond[count2].length*0.2f);
scaleaddvectors2(bondnormal,bondnormal,particle[part2].prevvelocity,-physicstemp.bond[count2].force[1]);
scaleaddvectors2(bondnormal,bondnormal,particle[part1].prevvelocity,-physicstemp.bond[count2].force[0]);
copyvector(vec,bondnormal);
if (dotproduct(vec,physicstemp.bond[count2].normal)<0.0f)
{
scalevector2(vec,vec,physicstemp.bond[count2].elasticity);
calculatefriction(vec,vec2,physicstemp.bond[count2].normal,physicstemp.bond[count2].friction);
addvectors2(vec,vec,vec2);
scaleaddvectors2(particle[part1].velocity,particle[part1].velocity,vec,physicstemp.bond[count2].force[0]);
scaleaddvectors2(particle[part2].velocity,particle[part2].velocity,vec,physicstemp.bond[count2].force[1]);
addvectors2(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].forceapplied[0],vec);
if (block[physicstemp.bond[count2].blocknum].breakpoint!=0.0f)
{
level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]+=vectorlength(vec)*particle[part1].mass;
if (level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]>block[physicstemp.bond[count2].blocknum].breakpoint)
physicstemp.bond[count2].type=-1;
}
}
}
if (physicstemp.bond[count2].type==4)
{
part1=physicstemp.bond[count2].part1;
part2=physicstemp.bond[count2].part2;
part3=physicstemp.bond[count2].part3;
scalevector2(bondnormal,physicstemp.bond[count2].normal,-physicstemp.bond[count2].length*0.2f);
scaleaddvectors2(bondnormal,bondnormal,particle[part3].prevvelocity,1.0f);
scaleaddvectors2(bondnormal,bondnormal,particle[part2].prevvelocity,-physicstemp.bond[count2].force[1]);
scaleaddvectors2(bondnormal,bondnormal,particle[part1].prevvelocity,-physicstemp.bond[count2].force[0]);
veclength=physicstemp.bond[count2].elasticity/(particle[part1].mass*physicstemp.bond[count2].force[0]+particle[part2].mass*physicstemp.bond[count2].force[1]+particle[part3].mass);
force[0]=veclength*particle[part3].mass;
force[1]=veclength*(particle[part1].mass*physicstemp.bond[count2].force[0]+particle[part2].mass*physicstemp.bond[count2].force[1]);
if (dotproduct(bondnormal,physicstemp.bond[count2].normal)*force[0]<0.0f)
{
scalevector2(vec,bondnormal,force[0]);
calculatefriction(vec,vec2,physicstemp.bond[count2].normal,physicstemp.bond[count2].friction);
addvectors2(vec,vec,vec2);
scaleaddvectors2(particle[part1].velocity,particle[part1].velocity,vec,physicstemp.bond[count2].force[0]);
scaleaddvectors2(particle[part2].velocity,particle[part2].velocity,vec,physicstemp.bond[count2].force[1]);
addvectors2(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].forceapplied[0],vec);
scalevector2(vec,bondnormal,-force[1]);
calculatefriction(vec,vec2,physicstemp.bond[count2].normal,physicstemp.bond[count2].friction);
addvectors2(vec,vec,vec2);
addvectors2(particle[part3].velocity,particle[part3].velocity,vec);
addvectors2(physicstemp.bond[count2].forceapplied[1],physicstemp.bond[count2].forceapplied[1],vec);
}
}
if (physicstemp.bond[count2].type==5)
{
part1=physicstemp.bond[count2].part1;
part2=physicstemp.bond[count2].part2;
part3=physicstemp.bond[count2].part3;
//scalevector(bondnormal,physicstemp.bond[count2].normal,-physicstemp.bond[count2].length*0.2f);
scalevector2(vec,particle[part1].position,physicstemp.bond[count2].force[0]);
scaleaddvectors2(vec,vec,particle[part2].position,physicstemp.bond[count2].force[1]);
subtractvectors2(bondnormal,particle[part3].position,vec);
scaleaddvectors2(bondnormal,bondnormal,particle[part3].prevvelocity,1.0f);
scaleaddvectors2(bondnormal,bondnormal,particle[part2].prevvelocity,-physicstemp.bond[count2].force[1]*1.0f);
scaleaddvectors2(bondnormal,bondnormal,particle[part1].prevvelocity,-physicstemp.bond[count2].force[0]*1.0f);
veclength=physicstemp.bond[count2].elasticity/(particle[part1].mass*physicstemp.bond[count2].force[0]+particle[part2].mass*physicstemp.bond[count2].force[1]+particle[part3].mass);
veclength*=0.2f;
veclength*=0.2f;
force[0]=veclength*particle[part3].mass;
force[1]=veclength*(particle[part1].mass*physicstemp.bond[count2].force[0]+particle[part2].mass*physicstemp.bond[count2].force[1]);
scalevector2(vec,bondnormal,force[0]);
scaleaddvectors2(particle[part1].velocity,particle[part1].velocity,vec,physicstemp.bond[count2].force[0]);
scaleaddvectors2(particle[part2].velocity,particle[part2].velocity,vec,physicstemp.bond[count2].force[1]);
addvectors2(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].forceapplied[0],vec);
scalevector2(vec,bondnormal,-force[1]);
addvectors2(particle[part3].velocity,particle[part3].velocity,vec);
addvectors2(physicstemp.bond[count2].forceapplied[1],physicstemp.bond[count2].forceapplied[1],vec);
}
}
}
for (count2=0;count2<physicstemp.numofbonds;count2++)
{
if (physicstemp.bond[count2].type==0)
if (physicstemp.bond[count2].objectnum[0]!=-1)
{
force[0]=dotproduct(physicstemp.bond[count2].forceapplied[0],physicstemp.bond[count2].normal);
force[1]=vectorlength(physicstemp.bond[count2].forceapplied[0]);
scale=sqrt(force[1]*force[1]-force[0]*force[0]);
object[physicstemp.bond[count2].objectnum[0]].frictionapplied+=scale;
}
}
for (count2=0;count2<physicstemp.numofbonds;count2++)
if (particle[physicstemp.bond[count2].part1].type!=5)
{
if (physicstemp.bond[count2].type==1)
{
part1=physicstemp.bond[count2].part1;
subtractvectors(bondnormal,physicstemp.bond[count2].point,particle[part1].position);
scalevector(vec,bondnormal,1.0f);
veclength=(vectorlength(bondnormal)-physicstemp.bond[count2].length);
scaleaddvectors(vec,vec,particle[part1].prevvelocity,-1.0f);
veclength=(vectorlength(bondnormal)-physicstemp.bond[count2].length)-dotproduct(bondnormal,particle[part1].prevvelocity)/vectorlength(bondnormal);
if (fabs(veclength)>physicstemp.bond[count2].breakpoint || (object[physicstemp.bond[count2].objectnum[0]].button&1)==0)
{
physicstemp.bond[count2].type=-1;
object[physicstemp.bond[count2].objectnum[0]].particlestick[physicstemp.bond[count2].part4]=0;
}
}
if (physicstemp.bond[count2].type==5)
{
part1=physicstemp.bond[count2].part1;
part2=physicstemp.bond[count2].part2;
part3=physicstemp.bond[count2].part3;
scalevector(vec,particle[part1].position,physicstemp.bond[count2].force[0]);
scaleaddvectors(vec,vec,particle[part2].position,physicstemp.bond[count2].force[1]);
copyvector(object[physicstemp.bond[count2].objectnum[0]].particlestickposition[physicstemp.bond[count2].part4],vec);
subtractvectors(bondnormal,particle[part3].position,vec);
subtractvectors(vec,particle[part2].position,particle[part1].position);
vec2[0]=-vec[1];
vec2[1]=vec[0];
vec2[2]=0.0f;
normalizevector(object[physicstemp.bond[count2].objectnum[0]].particlesticknormal[physicstemp.bond[count2].part4],vec2);
scaleaddvectors(bondnormal,bondnormal,particle[part3].prevvelocity,1.0f);
scaleaddvectors(bondnormal,bondnormal,particle[part2].prevvelocity,-physicstemp.bond[count2].force[1]*1.0f);
scaleaddvectors(bondnormal,bondnormal,particle[part1].prevvelocity,-physicstemp.bond[count2].force[0]*1.0f);
veclength=vectorlength(bondnormal);
if (fabs(veclength)>physicstemp.bond[count2].breakpoint || (object[physicstemp.bond[count2].objectnum[0]].button&1)==0 || (object[physicstemp.bond[count2].objectnum[0]].button&4)==4 || (object[physicstemp.bond[count2].objectnum[1]].button&4)==4)
{
physicstemp.bond[count2].type=-1;
object[physicstemp.bond[count2].objectnum[0]].particlestick[physicstemp.bond[count2].part4]=0;
}
}
blocknum=physicstemp.bond[count2].blocknum;
if (block[blocknum].breakpoint!=0.0f)
{
if (level.gridforce[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]>block[blocknum].breakpoint)
{
level.gridmod[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]=1;
if (blocknum>=240 && blocknum<248)
level.gridmod[physicstemp.bond[count2].blocky][physicstemp.bond[count2].blockx]=2;
setuplevellines(physicstemp.bond[count2].blockx-1,physicstemp.bond[count2].blocky-1,physicstemp.bond[count2].blockx+1,physicstemp.bond[count2].blocky+1);
vec[0]=(float)physicstemp.bond[count2].blockx+0.5f;
vec[1]=(float)physicstemp.bond[count2].blocky+0.5f;
vec[2]=0.0f;
playsound(0,vec,NULL,0.75f,0,0.5f/block[blocknum].breakpoint,-1,0);
if (level.gametype==GAMETYPE_CAMPAIGN)
{
game.score[0]+=10;
createsprite(10,vec);
}
/*
vec[0]=(float)physicstemp.bond[count2].blockx+0.5f;
vec[1]=(float)physicstemp.bond[count2].blocky+0.5f;
vec[2]=0.0f;
createbox(vec,0.99f,0.99f,block[blocknum].breakpoint*4.0f,block[blocknum].friction);
object[numofobjects-1].timetolive=200+(rand()&63);
object[numofobjects-1].texturenum=blocknum-256;
object[numofobjects-1].texcoord[0][0]=0.0f;
object[numofobjects-1].texcoord[0][1]=0.0f;
object[numofobjects-1].texcoord[1][0]=1.0f;
object[numofobjects-1].texcoord[1][1]=0.0f;
object[numofobjects-1].texcoord[2][0]=1.0f;
object[numofobjects-1].texcoord[2][1]=1.0f;
object[numofobjects-1].texcoord[3][0]=0.0f;