1150 lines
32 KiB
C
1150 lines
32 KiB
C
/*
|
|
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
|
|
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
|
|
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
|
|
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
|
|
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
|
|
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
|
|
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
|
|
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
|
|
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
|
|
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
|
|
*/
|
|
|
|
#ifdef RCS
|
|
static char rcsid[] = "$Id: physics.c,v 1.2 2001-01-20 13:49:17 bradleyb Exp $";
|
|
#endif
|
|
|
|
#include <conf.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "joy.h"
|
|
#include "mono.h"
|
|
#include "error.h"
|
|
|
|
#include "inferno.h"
|
|
#include "segment.h"
|
|
#include "object.h"
|
|
#include "physics.h"
|
|
#include "key.h"
|
|
#include "game.h"
|
|
#include "collide.h"
|
|
#include "fvi.h"
|
|
#include "newdemo.h"
|
|
#include "timer.h"
|
|
#include "ai.h"
|
|
#include "wall.h"
|
|
#include "laser.h"
|
|
#include "bm.h"
|
|
#include "player.h"
|
|
|
|
#ifdef TACTILE
|
|
#include "tactile.h"
|
|
#endif
|
|
|
|
//Global variables for physics system
|
|
|
|
#define ROLL_RATE 0x2000
|
|
#define DAMP_ANG 0x400 //min angle to bank
|
|
|
|
#define TURNROLL_SCALE (0x4ec4/2)
|
|
|
|
#define MAX_OBJECT_VEL i2f(100)
|
|
|
|
#define BUMP_HACK 1 //if defined, bump player when he gets stuck
|
|
|
|
//--unused-- int mike_mode=0;
|
|
|
|
//check point against each side of segment. return bitmask, where bit
|
|
//set means behind that side
|
|
|
|
int Physics_cheat_flag = 0;
|
|
extern char BounceCheat;
|
|
|
|
//##//returns the distance of a point (checkp) from a plane (defined by norm & planep)
|
|
//##fix dist_to_plane(vms_vector *checkp,vms_vector *norm,vms_vector *planep)
|
|
//##{
|
|
//## vms_vector deltap;
|
|
//##
|
|
//## vm_vec_sub(&deltap,checkp,planep);
|
|
//##
|
|
//## return vm_vec_dot(&deltap,norm);
|
|
//##}
|
|
|
|
//--unused-- int dpjm_old_joy_x, dpjm_old_joy_y;
|
|
|
|
int floor_levelling=0;
|
|
|
|
//--unused-- level_with_floor()
|
|
//--unused-- {
|
|
//--unused-- floor_levelling=1;
|
|
//--unused-- }
|
|
|
|
//make sure matrix is orthogonal
|
|
void check_and_fix_matrix(vms_matrix *m)
|
|
{
|
|
vms_matrix tempm;
|
|
|
|
vm_vector_2_matrix(&tempm,&m->fvec,&m->uvec,NULL);
|
|
*m = tempm;
|
|
}
|
|
|
|
|
|
void do_physics_align_object( object * obj )
|
|
{
|
|
vms_vector desired_upvec;
|
|
fixang delta_ang,roll_ang;
|
|
//vms_vector forvec = {0,0,f1_0};
|
|
vms_matrix temp_matrix;
|
|
fix d,largest_d=-f1_0;
|
|
int i,best_side;
|
|
|
|
best_side=0;
|
|
// bank player according to segment orientation
|
|
|
|
//find side of segment that player is most alligned with
|
|
|
|
for (i=0;i<6;i++) {
|
|
#ifdef COMPACT_SEGS
|
|
vms_vector _tv1;
|
|
get_side_normal( &Segments[obj->segnum], i, 0, &_tv1 );
|
|
d = vm_vec_dot(&_tv1,&obj->orient.uvec);
|
|
#else
|
|
d = vm_vec_dot(&Segments[obj->segnum].sides[i].normals[0],&obj->orient.uvec);
|
|
#endif
|
|
|
|
if (d > largest_d) {largest_d = d; best_side=i;}
|
|
}
|
|
|
|
if (floor_levelling) {
|
|
|
|
// old way: used floor's normal as upvec
|
|
#ifdef COMPACT_SEGS
|
|
get_side_normal(&Segments[obj->segnum], 3, 0, &desired_upvec );
|
|
#else
|
|
desired_upvec = Segments[obj->segnum].sides[3].normals[0];
|
|
#endif
|
|
|
|
}
|
|
else // new player leveling code: use normal of side closest to our up vec
|
|
if (get_num_faces(&Segments[obj->segnum].sides[best_side])==2) {
|
|
#ifdef COMPACT_SEGS
|
|
vms_vector normals[2];
|
|
get_side_normals(&Segments[obj->segnum], best_side, &normals[0], &normals[1] );
|
|
|
|
desired_upvec.x = (normals[0].x + normals[1].x) / 2;
|
|
desired_upvec.y = (normals[0].y + normals[1].y) / 2;
|
|
desired_upvec.z = (normals[0].z + normals[1].z) / 2;
|
|
|
|
vm_vec_normalize(&desired_upvec);
|
|
#else
|
|
side *s = &Segments[obj->segnum].sides[best_side];
|
|
desired_upvec.x = (s->normals[0].x + s->normals[1].x) / 2;
|
|
desired_upvec.y = (s->normals[0].y + s->normals[1].y) / 2;
|
|
desired_upvec.z = (s->normals[0].z + s->normals[1].z) / 2;
|
|
|
|
vm_vec_normalize(&desired_upvec);
|
|
#endif
|
|
}
|
|
else
|
|
#ifdef COMPACT_SEGS
|
|
get_side_normal(&Segments[obj->segnum], best_side, 0, &desired_upvec );
|
|
#else
|
|
desired_upvec = Segments[obj->segnum].sides[best_side].normals[0];
|
|
#endif
|
|
|
|
if (labs(vm_vec_dot(&desired_upvec,&obj->orient.fvec)) < f1_0/2) {
|
|
fixang save_delta_ang;
|
|
vms_angvec tangles;
|
|
|
|
vm_vector_2_matrix(&temp_matrix,&obj->orient.fvec,&desired_upvec,NULL);
|
|
|
|
save_delta_ang = delta_ang = vm_vec_delta_ang(&obj->orient.uvec,&temp_matrix.uvec,&obj->orient.fvec);
|
|
|
|
delta_ang += obj->mtype.phys_info.turnroll;
|
|
|
|
if (abs(delta_ang) > DAMP_ANG) {
|
|
vms_matrix rotmat, new_pm;
|
|
|
|
roll_ang = fixmul(FrameTime,ROLL_RATE);
|
|
|
|
if (abs(delta_ang) < roll_ang) roll_ang = delta_ang;
|
|
else if (delta_ang<0) roll_ang = -roll_ang;
|
|
|
|
tangles.p = tangles.h = 0; tangles.b = roll_ang;
|
|
vm_angles_2_matrix(&rotmat,&tangles);
|
|
|
|
vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
|
|
obj->orient = new_pm;
|
|
}
|
|
else floor_levelling=0;
|
|
}
|
|
|
|
}
|
|
|
|
void set_object_turnroll(object *obj)
|
|
{
|
|
fixang desired_bank;
|
|
|
|
desired_bank = -fixmul(obj->mtype.phys_info.rotvel.y,TURNROLL_SCALE);
|
|
|
|
if (obj->mtype.phys_info.turnroll != desired_bank) {
|
|
fixang delta_ang,max_roll;
|
|
|
|
max_roll = fixmul(ROLL_RATE,FrameTime);
|
|
|
|
delta_ang = desired_bank - obj->mtype.phys_info.turnroll;
|
|
|
|
if (labs(delta_ang) < max_roll)
|
|
max_roll = delta_ang;
|
|
else
|
|
if (delta_ang < 0)
|
|
max_roll = -max_roll;
|
|
|
|
obj->mtype.phys_info.turnroll += max_roll;
|
|
}
|
|
|
|
}
|
|
|
|
//list of segments went through
|
|
int phys_seglist[MAX_FVI_SEGS],n_phys_segs;
|
|
|
|
|
|
#define MAX_IGNORE_OBJS 100
|
|
|
|
#ifndef NDEBUG
|
|
#define EXTRA_DEBUG 1 //no extra debug when NDEBUG is on
|
|
#endif
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
object *debug_obj=NULL;
|
|
#endif
|
|
|
|
#define XYZ(v) (v)->x,(v)->y,(v)->z
|
|
|
|
|
|
#ifndef NDEBUG
|
|
int Total_retries=0, Total_sims=0;
|
|
int Dont_move_ai_objects=0;
|
|
#endif
|
|
|
|
#define FT (f1_0/64)
|
|
|
|
extern int disable_new_fvi_stuff;
|
|
// -----------------------------------------------------------------------------------------------------------
|
|
// add rotational velocity & acceleration
|
|
void do_physics_sim_rot(object *obj)
|
|
{
|
|
vms_angvec tangles;
|
|
vms_matrix rotmat,new_orient;
|
|
//fix rotdrag_scale;
|
|
physics_info *pi;
|
|
|
|
Assert(FrameTime > 0); //Get MATT if hit this!
|
|
|
|
pi = &obj->mtype.phys_info;
|
|
|
|
if (!(pi->rotvel.x || pi->rotvel.y || pi->rotvel.z || pi->rotthrust.x || pi->rotthrust.y || pi->rotthrust.z))
|
|
return;
|
|
|
|
if (obj->mtype.phys_info.drag) {
|
|
int count;
|
|
vms_vector accel;
|
|
fix drag,r,k;
|
|
|
|
count = FrameTime / FT;
|
|
r = FrameTime % FT;
|
|
k = fixdiv(r,FT);
|
|
|
|
drag = (obj->mtype.phys_info.drag*5)/2;
|
|
|
|
if (obj->mtype.phys_info.flags & PF_USES_THRUST) {
|
|
|
|
vm_vec_copy_scale(&accel,&obj->mtype.phys_info.rotthrust,fixdiv(f1_0,obj->mtype.phys_info.mass));
|
|
|
|
while (count--) {
|
|
|
|
vm_vec_add2(&obj->mtype.phys_info.rotvel,&accel);
|
|
|
|
vm_vec_scale(&obj->mtype.phys_info.rotvel,f1_0-drag);
|
|
}
|
|
|
|
//do linear scale on remaining bit of time
|
|
|
|
vm_vec_scale_add2(&obj->mtype.phys_info.rotvel,&accel,k);
|
|
vm_vec_scale(&obj->mtype.phys_info.rotvel,f1_0-fixmul(k,drag));
|
|
}
|
|
else if (! (obj->mtype.phys_info.flags & PF_FREE_SPINNING)) {
|
|
fix total_drag=f1_0;
|
|
|
|
while (count--)
|
|
total_drag = fixmul(total_drag,f1_0-drag);
|
|
|
|
//do linear scale on remaining bit of time
|
|
|
|
total_drag = fixmul(total_drag,f1_0-fixmul(k,drag));
|
|
|
|
vm_vec_scale(&obj->mtype.phys_info.rotvel,total_drag);
|
|
}
|
|
|
|
}
|
|
|
|
//mprintf( (0, "Rot vel = %.3f,%.3f,%.3f\n", f2fl(obj->mtype.phys_info.rotvel.x),f2fl(obj->mtype.phys_info.rotvel.y), f2fl(obj->mtype.phys_info.rotvel.z) ));
|
|
|
|
//now rotate object
|
|
|
|
//unrotate object for bank caused by turn
|
|
if (obj->mtype.phys_info.turnroll) {
|
|
vms_matrix new_pm;
|
|
|
|
tangles.p = tangles.h = 0;
|
|
tangles.b = -obj->mtype.phys_info.turnroll;
|
|
vm_angles_2_matrix(&rotmat,&tangles);
|
|
vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
|
|
obj->orient = new_pm;
|
|
}
|
|
|
|
tangles.p = fixmul(obj->mtype.phys_info.rotvel.x,FrameTime);
|
|
tangles.h = fixmul(obj->mtype.phys_info.rotvel.y,FrameTime);
|
|
tangles.b = fixmul(obj->mtype.phys_info.rotvel.z,FrameTime);
|
|
|
|
vm_angles_2_matrix(&rotmat,&tangles);
|
|
vm_matrix_x_matrix(&new_orient,&obj->orient,&rotmat);
|
|
obj->orient = new_orient;
|
|
|
|
if (obj->mtype.phys_info.flags & PF_TURNROLL)
|
|
set_object_turnroll(obj);
|
|
|
|
//re-rotate object for bank caused by turn
|
|
if (obj->mtype.phys_info.turnroll) {
|
|
vms_matrix new_pm;
|
|
|
|
tangles.p = tangles.h = 0;
|
|
tangles.b = obj->mtype.phys_info.turnroll;
|
|
vm_angles_2_matrix(&rotmat,&tangles);
|
|
vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
|
|
obj->orient = new_pm;
|
|
}
|
|
|
|
check_and_fix_matrix(&obj->orient);
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------------------------------------
|
|
//Simulate a physics object for this frame
|
|
void do_physics_sim(object *obj)
|
|
{
|
|
int ignore_obj_list[MAX_IGNORE_OBJS],n_ignore_objs;
|
|
int iseg;
|
|
int try_again;
|
|
int fate;
|
|
vms_vector frame_vec; //movement in this frame
|
|
vms_vector new_pos,ipos; //position after this frame
|
|
int count=0;
|
|
int objnum;
|
|
int WallHitSeg, WallHitSide;
|
|
fvi_info hit_info;
|
|
fvi_query fq;
|
|
vms_vector save_pos;
|
|
int save_seg;
|
|
fix drag;
|
|
fix sim_time,old_sim_time;
|
|
vms_vector start_pos;
|
|
int obj_stopped=0;
|
|
fix moved_time; //how long objected moved before hit something
|
|
vms_vector save_p0,save_p1;
|
|
physics_info *pi;
|
|
int orig_segnum = obj->segnum;
|
|
int bounced=0;
|
|
|
|
Assert(obj->type != OBJ_NONE);
|
|
Assert(obj->movement_type == MT_PHYSICS);
|
|
|
|
#ifndef NDEBUG
|
|
if (Dont_move_ai_objects)
|
|
if (obj->control_type == CT_AI)
|
|
return;
|
|
#endif
|
|
|
|
pi = &obj->mtype.phys_info;
|
|
|
|
do_physics_sim_rot(obj);
|
|
|
|
if (!(pi->velocity.x || pi->velocity.y || pi->velocity.z || pi->thrust.x || pi->thrust.y || pi->thrust.z))
|
|
return;
|
|
|
|
objnum = obj-Objects;
|
|
|
|
n_phys_segs = 0;
|
|
|
|
disable_new_fvi_stuff = (obj->type != OBJ_PLAYER);
|
|
|
|
sim_time = FrameTime;
|
|
|
|
//debug_obj = obj;
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj) {
|
|
printf("object %d:\n start pos = %x %x %x\n",objnum,XYZ(&obj->pos));
|
|
printf(" thrust = %x %x %x\n",XYZ(&obj->mtype.phys_info.thrust));
|
|
printf(" sim_time = %x\n",sim_time);
|
|
}
|
|
|
|
//check for correct object segment
|
|
if(!get_seg_masks(&obj->pos,obj->segnum,0).centermask==0) {
|
|
#ifndef NDEBUG
|
|
mprintf((0,"Warning: object %d not in given seg!\n",objnum));
|
|
#endif
|
|
//Int3(); Removed by Rob 10/5/94
|
|
if (!update_object_seg(obj)) {
|
|
#ifndef NDEBUG
|
|
mprintf((0,"Warning: can't find seg for object %d - moving\n",objnum));
|
|
#endif
|
|
if (!(Game_mode & GM_MULTI))
|
|
Int3();
|
|
compute_segment_center(&obj->pos,&Segments[obj->segnum]);
|
|
obj->pos.x += objnum;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
start_pos = obj->pos;
|
|
|
|
n_ignore_objs = 0;
|
|
|
|
Assert(obj->mtype.phys_info.brakes==0); //brakes not used anymore?
|
|
|
|
//if uses thrust, cannot have zero drag
|
|
Assert(!(obj->mtype.phys_info.flags&PF_USES_THRUST) || obj->mtype.phys_info.drag!=0);
|
|
|
|
//mprintf((0,"thrust=%x speed=%x\n",vm_vec_mag(&obj->mtype.phys_info.thrust),vm_vec_mag(&obj->mtype.phys_info.velocity)));
|
|
|
|
//do thrust & drag
|
|
|
|
if ((drag = obj->mtype.phys_info.drag) != 0) {
|
|
|
|
int count;
|
|
vms_vector accel;
|
|
fix r,k;
|
|
|
|
count = sim_time / FT;
|
|
r = sim_time % FT;
|
|
k = fixdiv(r,FT);
|
|
|
|
if (obj->mtype.phys_info.flags & PF_USES_THRUST) {
|
|
|
|
vm_vec_copy_scale(&accel,&obj->mtype.phys_info.thrust,fixdiv(f1_0,obj->mtype.phys_info.mass));
|
|
|
|
while (count--) {
|
|
|
|
vm_vec_add2(&obj->mtype.phys_info.velocity,&accel);
|
|
|
|
vm_vec_scale(&obj->mtype.phys_info.velocity,f1_0-drag);
|
|
}
|
|
|
|
//do linear scale on remaining bit of time
|
|
|
|
vm_vec_scale_add2(&obj->mtype.phys_info.velocity,&accel,k);
|
|
|
|
vm_vec_scale(&obj->mtype.phys_info.velocity,f1_0-fixmul(k,drag));
|
|
}
|
|
else {
|
|
fix total_drag=f1_0;
|
|
|
|
while (count--)
|
|
total_drag = fixmul(total_drag,f1_0-drag);
|
|
|
|
//do linear scale on remaining bit of time
|
|
|
|
total_drag = fixmul(total_drag,f1_0-fixmul(k,drag));
|
|
|
|
vm_vec_scale(&obj->mtype.phys_info.velocity,total_drag);
|
|
}
|
|
}
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" velocity = %x %x %x\n",XYZ(&obj->mtype.phys_info.velocity));
|
|
#endif
|
|
|
|
do {
|
|
try_again = 0;
|
|
|
|
//Move the object
|
|
vm_vec_copy_scale(&frame_vec, &obj->mtype.phys_info.velocity, sim_time);
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" pass %d, frame_vec = %x %x %x\n",count,XYZ(&frame_vec));
|
|
#endif
|
|
|
|
if ( (frame_vec.x==0) && (frame_vec.y==0) && (frame_vec.z==0) )
|
|
break;
|
|
|
|
count++;
|
|
|
|
// If retry count is getting large, then we are trying to do something stupid.
|
|
if ( count > 3) {
|
|
if (obj->type == OBJ_PLAYER) {
|
|
if (count > 8)
|
|
break;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
vm_vec_add(&new_pos,&obj->pos,&frame_vec);
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" desired_pos = %x %x %x\n",XYZ(&new_pos));
|
|
#endif
|
|
|
|
ignore_obj_list[n_ignore_objs] = -1;
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj) {
|
|
printf(" FVI parms: p0 = %8x %8x %8x, segnum=%x, size=%x\n",XYZ(&obj->pos),obj->segnum,obj->size);
|
|
printf(" p1 = %8x %8x %8x\n",XYZ(&new_pos));
|
|
}
|
|
#endif
|
|
|
|
fq.p0 = &obj->pos;
|
|
fq.startseg = obj->segnum;
|
|
fq.p1 = &new_pos;
|
|
fq.rad = obj->size;
|
|
fq.thisobjnum = objnum;
|
|
fq.ignore_obj_list = ignore_obj_list;
|
|
fq.flags = FQ_CHECK_OBJS;
|
|
|
|
if (obj->type == OBJ_WEAPON)
|
|
fq.flags |= FQ_TRANSPOINT;
|
|
|
|
if (obj->type == OBJ_PLAYER)
|
|
fq.flags |= FQ_GET_SEGLIST;
|
|
|
|
//@@ if (get_seg_masks(&obj->pos,obj->segnum,0).centermask!=0)
|
|
//@@ Int3();
|
|
|
|
save_p0 = *fq.p0;
|
|
save_p1 = *fq.p1;
|
|
|
|
|
|
fate = find_vector_intersection(&fq,&hit_info);
|
|
// Matt: Mike's hack.
|
|
if (fate == HIT_OBJECT) {
|
|
object *objp = &Objects[hit_info.hit_object];
|
|
|
|
if ((objp->type == OBJ_WEAPON) && ((objp->id == PROXIMITY_ID) || (objp->id == SUPERPROX_ID)))
|
|
count--;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
if (fate == HIT_BAD_P0) {
|
|
mprintf((0,"Warning: Bad p0 in physics! Object = %i, type = %i [%s]\n", obj-Objects, obj->type, Object_type_names[obj->type]));
|
|
Int3();
|
|
}
|
|
#endif
|
|
|
|
if (obj->type == OBJ_PLAYER) {
|
|
int i;
|
|
|
|
if (n_phys_segs && phys_seglist[n_phys_segs-1]==hit_info.seglist[0])
|
|
n_phys_segs--;
|
|
|
|
for (i=0;(i<hit_info.n_segs) && (n_phys_segs<MAX_FVI_SEGS-1); )
|
|
phys_seglist[n_phys_segs++] = hit_info.seglist[i++];
|
|
}
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" fate = %d, hit_pnt = %8x %8x %8x\n",fate,XYZ(&hit_info.hit_pnt));;
|
|
#endif
|
|
|
|
ipos = hit_info.hit_pnt;
|
|
iseg = hit_info.hit_seg;
|
|
WallHitSide = hit_info.hit_side;
|
|
WallHitSeg = hit_info.hit_side_seg;
|
|
|
|
if (iseg==-1) { //some sort of horrible error
|
|
#ifndef NDEBUG
|
|
mprintf((1,"iseg==-1 in physics! Object = %i, type = %i (%s)\n", obj-Objects, obj->type, Object_type_names[obj->type]));
|
|
#endif
|
|
//Int3();
|
|
//compute_segment_center(&ipos,&Segments[obj->segnum]);
|
|
//ipos.x += objnum;
|
|
//iseg = obj->segnum;
|
|
//fate = HIT_NONE;
|
|
if (obj->type == OBJ_WEAPON)
|
|
obj->flags |= OF_SHOULD_BE_DEAD;
|
|
break;
|
|
}
|
|
|
|
Assert(!((fate==HIT_WALL) && ((WallHitSeg == -1) || (WallHitSeg > Highest_segment_index))));
|
|
|
|
//if(!get_seg_masks(&hit_info.hit_pnt,hit_info.hit_seg,0).centermask==0)
|
|
// Int3();
|
|
|
|
save_pos = obj->pos; //save the object's position
|
|
save_seg = obj->segnum;
|
|
|
|
// update object's position and segment number
|
|
obj->pos = ipos;
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" new pos = %x %x %x\n",XYZ(&obj->pos));
|
|
#endif
|
|
|
|
if ( iseg != obj->segnum )
|
|
obj_relink(objnum, iseg );
|
|
|
|
//if start point not in segment, move object to center of segment
|
|
if (get_seg_masks(&obj->pos,obj->segnum,0).centermask!=0) {
|
|
int n;
|
|
|
|
if ((n=find_object_seg(obj))==-1) {
|
|
//Int3();
|
|
if (obj->type==OBJ_PLAYER && (n=find_point_seg(&obj->last_pos,obj->segnum))!=-1) {
|
|
obj->pos = obj->last_pos;
|
|
obj_relink(objnum, n );
|
|
}
|
|
else {
|
|
compute_segment_center(&obj->pos,&Segments[obj->segnum]);
|
|
obj->pos.x += objnum;
|
|
}
|
|
if (obj->type == OBJ_WEAPON)
|
|
obj->flags |= OF_SHOULD_BE_DEAD;
|
|
}
|
|
return;
|
|
}
|
|
|
|
//calulate new sim time
|
|
{
|
|
//vms_vector moved_vec;
|
|
vms_vector moved_vec_n;
|
|
fix attempted_dist,actual_dist;
|
|
|
|
old_sim_time = sim_time;
|
|
|
|
actual_dist = vm_vec_normalized_dir(&moved_vec_n,&obj->pos,&save_pos);
|
|
|
|
if (fate==HIT_WALL && vm_vec_dot(&moved_vec_n,&frame_vec) < 0) { //moved backwards
|
|
|
|
//don't change position or sim_time
|
|
|
|
//******* mprintf((0,"Obj %d moved backwards\n",obj-Objects));
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" Warning: moved backwards!\n");
|
|
#endif
|
|
|
|
obj->pos = save_pos;
|
|
|
|
//iseg = obj->segnum; //don't change segment
|
|
|
|
obj_relink(objnum, save_seg );
|
|
|
|
moved_time = 0;
|
|
}
|
|
else {
|
|
|
|
//if (obj == debug_obj)
|
|
// printf(" moved_vec = %x %x %x\n",XYZ(&moved_vec));
|
|
|
|
attempted_dist = vm_vec_mag(&frame_vec);
|
|
|
|
sim_time = fixmuldiv(sim_time,attempted_dist-actual_dist,attempted_dist);
|
|
|
|
moved_time = old_sim_time - sim_time;
|
|
|
|
if (sim_time < 0 || sim_time>old_sim_time) {
|
|
#ifndef NDEBUG
|
|
mprintf((0,"Bogus sim_time = %x, old = %x\n",sim_time,old_sim_time));
|
|
if (obj == debug_obj)
|
|
printf(" Bogus sim_time = %x, old = %x, attempted_dist = %x, actual_dist = %x\n",sim_time,old_sim_time,attempted_dist,actual_dist);
|
|
//Int3(); Removed by Rob
|
|
#endif
|
|
sim_time = old_sim_time;
|
|
//WHY DOES THIS HAPPEN??
|
|
|
|
moved_time = 0;
|
|
}
|
|
}
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj)
|
|
printf(" new sim_time = %x\n",sim_time);
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
switch( fate ) {
|
|
|
|
case HIT_WALL: {
|
|
vms_vector moved_v;
|
|
//@@fix total_d,moved_d;
|
|
fix hit_speed,wall_part;
|
|
|
|
// Find hit speed
|
|
|
|
vm_vec_sub(&moved_v,&obj->pos,&save_pos);
|
|
|
|
wall_part = vm_vec_dot(&moved_v,&hit_info.hit_wallnorm);
|
|
|
|
if (wall_part != 0 && moved_time>0 && (hit_speed=-fixdiv(wall_part,moved_time))>0)
|
|
collide_object_with_wall( obj, hit_speed, WallHitSeg, WallHitSide, &hit_info.hit_pnt );
|
|
else
|
|
scrape_object_on_wall(obj, WallHitSeg, WallHitSide, &hit_info.hit_pnt );
|
|
|
|
Assert( WallHitSeg > -1 );
|
|
Assert( WallHitSide > -1 );
|
|
|
|
if ( !(obj->flags&OF_SHOULD_BE_DEAD) ) {
|
|
int forcefield_bounce; //bounce off a forcefield
|
|
|
|
Assert(BounceCheat || !(obj->mtype.phys_info.flags & PF_STICK && obj->mtype.phys_info.flags & PF_BOUNCE)); //can't be bounce and stick
|
|
|
|
forcefield_bounce = (TmapInfo[Segments[WallHitSeg].sides[WallHitSide].tmap_num].flags & TMI_FORCE_FIELD);
|
|
|
|
if (!forcefield_bounce && (obj->mtype.phys_info.flags & PF_STICK)) { //stop moving
|
|
|
|
// mprintf((0, "Object %i stuck at %i:%i\n", obj-Objects, WallHitSeg, WallHitSide));
|
|
add_stuck_object(obj, WallHitSeg, WallHitSide);
|
|
|
|
vm_vec_zero(&obj->mtype.phys_info.velocity);
|
|
obj_stopped = 1;
|
|
try_again = 0;
|
|
}
|
|
else { // Slide object along wall
|
|
int check_vel=0;
|
|
|
|
//We're constrained by wall, so subtract wall part from
|
|
//velocity vector
|
|
|
|
wall_part = vm_vec_dot(&hit_info.hit_wallnorm,&obj->mtype.phys_info.velocity);
|
|
|
|
// mprintf((0, "%d", f2i(vm_vec_mag(&hit_info.hit_wallnorm)) ));
|
|
|
|
if (forcefield_bounce || (obj->mtype.phys_info.flags & PF_BOUNCE)) { //bounce off wall
|
|
wall_part *= 2; //Subtract out wall part twice to achieve bounce
|
|
|
|
if (forcefield_bounce) {
|
|
check_vel = 1; //check for max velocity
|
|
if (obj->type == OBJ_PLAYER)
|
|
wall_part *= 2; //player bounce twice as much
|
|
}
|
|
|
|
if ( obj->mtype.phys_info.flags & PF_BOUNCES_TWICE) {
|
|
Assert(obj->mtype.phys_info.flags & PF_BOUNCE);
|
|
if (obj->mtype.phys_info.flags & PF_BOUNCED_ONCE)
|
|
obj->mtype.phys_info.flags &= ~(PF_BOUNCE+PF_BOUNCED_ONCE+PF_BOUNCES_TWICE);
|
|
else
|
|
obj->mtype.phys_info.flags |= PF_BOUNCED_ONCE;
|
|
}
|
|
|
|
bounced = 1; //this object bounced
|
|
}
|
|
|
|
vm_vec_scale_add2(&obj->mtype.phys_info.velocity,&hit_info.hit_wallnorm,-wall_part);
|
|
|
|
// mprintf((0, "Velocity at bounce time = %d\n", f2i(vm_vec_mag(&obj->mtype.phys_info.velocity))));
|
|
|
|
//if (obj==ConsoleObject)
|
|
// mprintf((0,"player vel = %x\n",vm_vec_mag_quick(&obj->mtype.phys_info.velocity)));
|
|
|
|
if (check_vel) {
|
|
fix vel = vm_vec_mag_quick(&obj->mtype.phys_info.velocity);
|
|
|
|
if (vel > MAX_OBJECT_VEL)
|
|
vm_vec_scale(&obj->mtype.phys_info.velocity,fixdiv(MAX_OBJECT_VEL,vel));
|
|
}
|
|
|
|
if (bounced && obj->type == OBJ_WEAPON)
|
|
vm_vector_2_matrix(&obj->orient,&obj->mtype.phys_info.velocity,&obj->orient.uvec,NULL);
|
|
|
|
#ifdef EXTRA_DEBUG
|
|
if (obj == debug_obj) {
|
|
printf(" sliding - wall_norm %x %x %x %x\n",wall_part,XYZ(&hit_info.hit_wallnorm));
|
|
printf(" wall_part %x, new velocity = %x %x %x\n",wall_part,XYZ(&obj->mtype.phys_info.velocity));
|
|
}
|
|
#endif
|
|
|
|
try_again = 1;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case HIT_OBJECT: {
|
|
vms_vector old_vel;
|
|
|
|
// Mark the hit object so that on a retry the fvi code
|
|
// ignores this object.
|
|
|
|
Assert(hit_info.hit_object != -1);
|
|
|
|
// Calculcate the hit point between the two objects.
|
|
{ vms_vector *ppos0, *ppos1, pos_hit;
|
|
fix size0, size1;
|
|
ppos0 = &Objects[hit_info.hit_object].pos;
|
|
ppos1 = &obj->pos;
|
|
size0 = Objects[hit_info.hit_object].size;
|
|
size1 = obj->size;
|
|
Assert(size0+size1 != 0); // Error, both sizes are 0, so how did they collide, anyway?!?
|
|
//vm_vec_scale(vm_vec_sub(&pos_hit, ppos1, ppos0), fixdiv(size0, size0 + size1));
|
|
//vm_vec_add2(&pos_hit, ppos0);
|
|
vm_vec_sub(&pos_hit, ppos1, ppos0);
|
|
vm_vec_scale_add(&pos_hit,ppos0,&pos_hit,fixdiv(size0, size0 + size1));
|
|
|
|
old_vel = obj->mtype.phys_info.velocity;
|
|
|
|
collide_two_objects( obj, &Objects[hit_info.hit_object], &pos_hit);
|
|
|
|
}
|
|
|
|
// Let object continue its movement
|
|
if ( !(obj->flags&OF_SHOULD_BE_DEAD) ) {
|
|
//obj->pos = save_pos;
|
|
|
|
if (obj->mtype.phys_info.flags&PF_PERSISTENT || (old_vel.x == obj->mtype.phys_info.velocity.x && old_vel.y == obj->mtype.phys_info.velocity.y && old_vel.z == obj->mtype.phys_info.velocity.z)) {
|
|
//if (Objects[hit_info.hit_object].type == OBJ_POWERUP)
|
|
ignore_obj_list[n_ignore_objs++] = hit_info.hit_object;
|
|
try_again = 1;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
case HIT_NONE:
|
|
#ifdef TACTILE
|
|
if (TactileStick && obj==ConsoleObject && !(FrameCount & 15))
|
|
Tactile_Xvibrate_clear ();
|
|
#endif
|
|
break;
|
|
|
|
#ifndef NDEBUG
|
|
case HIT_BAD_P0:
|
|
Int3(); // Unexpected collision type: start point not in specified segment.
|
|
mprintf((0,"Warning: Bad p0 in physics!!!\n"));
|
|
break;
|
|
default:
|
|
// Unknown collision type returned from find_vector_intersection!!
|
|
Int3();
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
} while ( try_again );
|
|
|
|
// Pass retry count info to AI.
|
|
if (obj->control_type == CT_AI) {
|
|
if (count > 0) {
|
|
Ai_local_info[objnum].retry_count = count-1;
|
|
#ifndef NDEBUG
|
|
Total_retries += count-1;
|
|
Total_sims++;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
//I'm not sure why we do this. I wish there were a comment that
|
|
//explained it. I think maybe it only needs to be done if the object
|
|
//is sliding, but I don't know
|
|
if (!obj_stopped && !bounced) { //Set velocity from actual movement
|
|
vms_vector moved_vec;
|
|
|
|
vm_vec_sub(&moved_vec,&obj->pos,&start_pos);
|
|
vm_vec_copy_scale(&obj->mtype.phys_info.velocity,&moved_vec,fixdiv(f1_0,FrameTime));
|
|
|
|
#ifdef BUMP_HACK
|
|
if (obj==ConsoleObject && (obj->mtype.phys_info.velocity.x==0 && obj->mtype.phys_info.velocity.y==0 && obj->mtype.phys_info.velocity.z==0) &&
|
|
!(obj->mtype.phys_info.thrust.x==0 && obj->mtype.phys_info.thrust.y==0 && obj->mtype.phys_info.thrust.z==0)) {
|
|
vms_vector center,bump_vec;
|
|
|
|
//bump player a little towards center of segment to unstick
|
|
|
|
compute_segment_center(¢er,&Segments[obj->segnum]);
|
|
vm_vec_normalized_dir_quick(&bump_vec,¢er,&obj->pos);
|
|
|
|
//don't bump player toward center of reactor segment
|
|
if (Segment2s[obj->segnum].special == SEGMENT_IS_CONTROLCEN)
|
|
vm_vec_negate(&bump_vec);
|
|
|
|
vm_vec_scale_add2(&obj->pos,&bump_vec,obj->size/5);
|
|
|
|
//if moving away from seg, might move out of seg, so update
|
|
if (Segment2s[obj->segnum].special == SEGMENT_IS_CONTROLCEN)
|
|
update_object_seg(obj);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
//Assert(check_point_in_seg(&obj->pos,obj->segnum,0).centermask==0);
|
|
|
|
//if (obj->control_type == CT_FLYING)
|
|
if (obj->mtype.phys_info.flags & PF_LEVELLING)
|
|
do_physics_align_object( obj );
|
|
|
|
|
|
//hack to keep player from going through closed doors
|
|
if (obj->type==OBJ_PLAYER && obj->segnum!=orig_segnum && (Physics_cheat_flag!=0xBADA55) ) {
|
|
int sidenum;
|
|
|
|
sidenum = find_connect_side(&Segments[obj->segnum],&Segments[orig_segnum]);
|
|
|
|
if (sidenum != -1) {
|
|
|
|
if (! (WALL_IS_DOORWAY(&Segments[orig_segnum],sidenum) & WID_FLY_FLAG)) {
|
|
side *s;
|
|
int vertnum,num_faces,i;
|
|
fix dist;
|
|
int vertex_list[6];
|
|
|
|
//bump object back
|
|
|
|
s = &Segments[orig_segnum].sides[sidenum];
|
|
|
|
if (orig_segnum==-1)
|
|
Error("orig_segnum == -1 in physics");
|
|
|
|
create_abs_vertex_lists( &num_faces, vertex_list, orig_segnum, sidenum);
|
|
|
|
//let's pretend this wall is not triangulated
|
|
vertnum = vertex_list[0];
|
|
for (i=1;i<4;i++)
|
|
if (vertex_list[i] < vertnum)
|
|
vertnum = vertex_list[i];
|
|
|
|
#ifdef COMPACT_SEGS
|
|
{
|
|
vms_vector _vn;
|
|
get_side_normal(&Segments[orig_segnum], sidenum, 0, &_vn );
|
|
dist = vm_dist_to_plane(&start_pos, &_vn, &Vertices[vertnum]);
|
|
vm_vec_scale_add(&obj->pos,&start_pos,&_vn,obj->size-dist);
|
|
}
|
|
#else
|
|
dist = vm_dist_to_plane(&start_pos, &s->normals[0], &Vertices[vertnum]);
|
|
vm_vec_scale_add(&obj->pos,&start_pos,&s->normals[0],obj->size-dist);
|
|
#endif
|
|
update_object_seg(obj);
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
//--WE ALWYS WANT THIS IN, MATT AND MIKE DECISION ON 12/10/94, TWO MONTHS AFTER FINAL #ifndef NDEBUG
|
|
//if end point not in segment, move object to last pos, or segment center
|
|
if (get_seg_masks(&obj->pos,obj->segnum,0).centermask!=0) {
|
|
if (find_object_seg(obj)==-1) {
|
|
int n;
|
|
|
|
//Int3();
|
|
if (obj->type==OBJ_PLAYER && (n=find_point_seg(&obj->last_pos,obj->segnum))!=-1) {
|
|
obj->pos = obj->last_pos;
|
|
obj_relink(objnum, n );
|
|
}
|
|
else {
|
|
compute_segment_center(&obj->pos,&Segments[obj->segnum]);
|
|
obj->pos.x += objnum;
|
|
}
|
|
if (obj->type == OBJ_WEAPON)
|
|
obj->flags |= OF_SHOULD_BE_DEAD;
|
|
}
|
|
}
|
|
//--WE ALWYS WANT THIS IN, MATT AND MIKE DECISION ON 12/10/94, TWO MONTHS AFTER FINAL #endif
|
|
|
|
|
|
}
|
|
|
|
//--unused-- //tell us what the given object will do (as far as hiting walls) in
|
|
//--unused-- //the given time (in seconds) t. Igores acceleration (sorry)
|
|
//--unused-- //if check_objects is set, check with objects, else just with walls
|
|
//--unused-- //returns fate, fills in hit time. If fate==HIT_NONE, hit_time undefined
|
|
//--unused-- int physics_lookahead(object *obj,fix t,int fvi_flags,fix *hit_time, fvi_info *hit_info)
|
|
//--unused-- {
|
|
//--unused-- vms_vector new_pos;
|
|
//--unused-- int objnum,fate;
|
|
//--unused-- fvi_query fq;
|
|
//--unused--
|
|
//--unused-- Assert(obj->movement_type == MT_PHYSICS);
|
|
//--unused--
|
|
//--unused-- objnum = obj-Objects;
|
|
//--unused--
|
|
//--unused-- vm_vec_scale_add(&new_pos, &obj->pos, &obj->mtype.phys_info.velocity, t);
|
|
//--unused--
|
|
//--unused-- fq.p0 = &obj->pos;
|
|
//--unused-- fq.startseg = obj->segnum;
|
|
//--unused-- fq.p1 = &new_pos;
|
|
//--unused-- fq.rad = obj->size;
|
|
//--unused-- fq.thisobjnum = objnum;
|
|
//--unused-- fq.ignore_obj_list = NULL;
|
|
//--unused-- fq.flags = fvi_flags;
|
|
//--unused--
|
|
//--unused-- fate = find_vector_intersection(&fq,hit_info);
|
|
//--unused--
|
|
//--unused-- if (fate != HIT_NONE) {
|
|
//--unused-- fix dist,speed;
|
|
//--unused--
|
|
//--unused-- dist = vm_vec_dist(&obj->pos, &hit_info->hit_pnt);
|
|
//--unused--
|
|
//--unused-- speed = vm_vec_mag(&obj->mtype.phys_info.velocity);
|
|
//--unused--
|
|
//--unused-- *hit_time = fixdiv(dist,speed);
|
|
//--unused--
|
|
//--unused-- }
|
|
//--unused--
|
|
//--unused-- return fate;
|
|
//--unused--
|
|
//--unused-- }
|
|
|
|
//Applies an instantaneous force on an object, resulting in an instantaneous
|
|
//change in velocity.
|
|
void phys_apply_force(object *obj,vms_vector *force_vec)
|
|
{
|
|
|
|
// Put in by MK on 2/13/96 for force getting applied to Omega blobs, which have 0 mass,
|
|
// in collision with crazy reactor robot thing on d2levf-s.
|
|
if (obj->mtype.phys_info.mass == 0)
|
|
return;
|
|
|
|
if (obj->movement_type != MT_PHYSICS)
|
|
return;
|
|
|
|
#ifdef TACTILE
|
|
if (TactileStick && obj==&Objects[Players[Player_num].objnum])
|
|
Tactile_apply_force (force_vec,&obj->orient);
|
|
#endif
|
|
|
|
//Add in acceleration due to force
|
|
vm_vec_scale_add2(&obj->mtype.phys_info.velocity,force_vec,fixdiv(f1_0,obj->mtype.phys_info.mass));
|
|
|
|
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
// Do *dest = *delta unless:
|
|
// *delta is pretty small
|
|
// and they are of different signs.
|
|
void physics_set_rotvel_and_saturate(fix *dest, fix delta)
|
|
{
|
|
if ((delta ^ *dest) < 0) {
|
|
if (abs(delta) < F1_0/8) {
|
|
// mprintf((0, "D"));
|
|
*dest = delta/4;
|
|
} else
|
|
// mprintf((0, "d"));
|
|
*dest = delta;
|
|
} else {
|
|
// mprintf((0, "!"));
|
|
*dest = delta;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------------
|
|
// Note: This is the old ai_turn_towards_vector code.
|
|
// phys_apply_rot used to call ai_turn_towards_vector until I fixed it, which broke phys_apply_rot.
|
|
void physics_turn_towards_vector(vms_vector *goal_vector, object *obj, fix rate)
|
|
{
|
|
vms_angvec dest_angles, cur_angles;
|
|
fix delta_p, delta_h;
|
|
vms_vector *rotvel_ptr = &obj->mtype.phys_info.rotvel;
|
|
|
|
// Make this object turn towards the goal_vector. Changes orientation, doesn't change direction of movement.
|
|
// If no one moves, will be facing goal_vector in 1 second.
|
|
|
|
// Detect null vector.
|
|
if ((goal_vector->x == 0) && (goal_vector->y == 0) && (goal_vector->z == 0))
|
|
return;
|
|
|
|
// Make morph objects turn more slowly.
|
|
if (obj->control_type == CT_MORPH)
|
|
rate *= 2;
|
|
|
|
vm_extract_angles_vector(&dest_angles, goal_vector);
|
|
vm_extract_angles_vector(&cur_angles, &obj->orient.fvec);
|
|
|
|
delta_p = (dest_angles.p - cur_angles.p);
|
|
delta_h = (dest_angles.h - cur_angles.h);
|
|
|
|
if (delta_p > F1_0/2) delta_p = dest_angles.p - cur_angles.p - F1_0;
|
|
if (delta_p < -F1_0/2) delta_p = dest_angles.p - cur_angles.p + F1_0;
|
|
if (delta_h > F1_0/2) delta_h = dest_angles.h - cur_angles.h - F1_0;
|
|
if (delta_h < -F1_0/2) delta_h = dest_angles.h - cur_angles.h + F1_0;
|
|
|
|
delta_p = fixdiv(delta_p, rate);
|
|
delta_h = fixdiv(delta_h, rate);
|
|
|
|
if (abs(delta_p) < F1_0/16) delta_p *= 4;
|
|
if (abs(delta_h) < F1_0/16) delta_h *= 4;
|
|
|
|
physics_set_rotvel_and_saturate(&rotvel_ptr->x, delta_p);
|
|
physics_set_rotvel_and_saturate(&rotvel_ptr->y, delta_h);
|
|
rotvel_ptr->z = 0;
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Applies an instantaneous whack on an object, resulting in an instantaneous
|
|
// change in orientation.
|
|
void phys_apply_rot(object *obj,vms_vector *force_vec)
|
|
{
|
|
fix rate, vecmag;
|
|
|
|
if (obj->movement_type != MT_PHYSICS)
|
|
return;
|
|
|
|
vecmag = vm_vec_mag(force_vec)/8;
|
|
if (vecmag < F1_0/256)
|
|
rate = 4*F1_0;
|
|
else if (vecmag < obj->mtype.phys_info.mass >> 14)
|
|
rate = 4*F1_0;
|
|
else {
|
|
rate = fixdiv(obj->mtype.phys_info.mass, vecmag);
|
|
if (obj->type == OBJ_ROBOT) {
|
|
if (rate < F1_0/4)
|
|
rate = F1_0/4;
|
|
// Changed by mk, 10/24/95, claw guys should not slow down when attacking!
|
|
if (!Robot_info[obj->id].thief && !Robot_info[obj->id].attack_type) {
|
|
if (obj->ctype.ai_info.SKIP_AI_COUNT * FrameTime < 3*F1_0/4) {
|
|
fix tval = fixdiv(F1_0, 8*FrameTime);
|
|
int addval;
|
|
|
|
addval = f2i(tval);
|
|
|
|
if ( (d_rand() * 2) < (tval & 0xffff))
|
|
addval++;
|
|
obj->ctype.ai_info.SKIP_AI_COUNT += addval;
|
|
// -- mk: too much stuff making hard to see my debug messages...mprintf((0, "FrameTime = %7.3f, addval = %i\n", f2fl(FrameTime), addval));
|
|
}
|
|
}
|
|
} else {
|
|
if (rate < F1_0/2)
|
|
rate = F1_0/2;
|
|
}
|
|
}
|
|
|
|
// Turn amount inversely proportional to mass. Third parameter is seconds to do 360 turn.
|
|
physics_turn_towards_vector(force_vec, obj, rate);
|
|
|
|
|
|
}
|
|
|
|
|
|
//this routine will set the thrust for an object to a value that will
|
|
//(hopefully) maintain the object's current velocity
|
|
void set_thrust_from_velocity(object *obj)
|
|
{
|
|
fix k;
|
|
|
|
Assert(obj->movement_type == MT_PHYSICS);
|
|
|
|
k = fixmuldiv(obj->mtype.phys_info.mass,obj->mtype.phys_info.drag,(f1_0-obj->mtype.phys_info.drag));
|
|
|
|
vm_vec_copy_scale(&obj->mtype.phys_info.thrust,&obj->mtype.phys_info.velocity,k);
|
|
|
|
}
|
|
|
|
|