mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-14 00:40:55 +00:00
925300716b
It was added only because FitzQuake used it in its pre-bsp2 large-map support. That support has been hidden in bspfile.c for some time now. This doesn't gain much other than having one less type to worry about. Well tested on Conflagrant Rodent (the map that caused the need for mclipnode_t in the first place).
339 lines
7.8 KiB
C
339 lines
7.8 KiB
C
/*
|
|
pmovetst.c
|
|
|
|
(description)
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
|
|
#include "QF/console.h"
|
|
#include "QF/model.h"
|
|
#include "QF/qtypes.h"
|
|
#include "QF/sys.h"
|
|
|
|
#include "compat.h"
|
|
|
|
#include "qw/pmove.h"
|
|
#include "world.h"
|
|
|
|
static hull_t box_hull;
|
|
static dclipnode_t box_clipnodes[6];
|
|
static plane_t box_planes[6];
|
|
|
|
|
|
/*
|
|
PM_InitBoxHull
|
|
|
|
Set up the planes and clipnodes so that the six floats of a bounding box
|
|
can just be stored out and get a proper hull_t structure.
|
|
*/
|
|
void
|
|
PM_InitBoxHull (void)
|
|
{
|
|
int side, i;
|
|
|
|
box_hull.clipnodes = box_clipnodes;
|
|
box_hull.planes = box_planes;
|
|
box_hull.firstclipnode = 0;
|
|
box_hull.lastclipnode = 5;
|
|
box_hull.depth = 6;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
box_clipnodes[i].planenum = i;
|
|
|
|
side = i & 1;
|
|
|
|
box_clipnodes[i].children[side] = CONTENTS_EMPTY;
|
|
if (i != 5)
|
|
box_clipnodes[i].children[side ^ 1] = i + 1;
|
|
else
|
|
box_clipnodes[i].children[side ^ 1] = CONTENTS_SOLID;
|
|
|
|
box_planes[i].type = i >> 1;
|
|
box_planes[i].normal[i >> 1] = 1;
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
PM_HullForBox
|
|
|
|
To keep everything totally uniform, bounding boxes are turned into small
|
|
BSP trees instead of being compared directly.
|
|
*/
|
|
static inline hull_t *
|
|
PM_HullForBox (const vec3_t mins, const vec3_t maxs)
|
|
{
|
|
box_planes[0].dist = maxs[0];
|
|
box_planes[1].dist = mins[0];
|
|
box_planes[2].dist = maxs[1];
|
|
box_planes[3].dist = mins[1];
|
|
box_planes[4].dist = maxs[2];
|
|
box_planes[5].dist = mins[2];
|
|
|
|
return &box_hull;
|
|
}
|
|
|
|
inline int
|
|
PM_HullPointContents (hull_t *hull, int num, const vec3_t p)
|
|
{
|
|
float d;
|
|
dclipnode_t *node;
|
|
plane_t *plane;
|
|
|
|
while (num >= 0) {
|
|
node = hull->clipnodes + num;
|
|
plane = hull->planes + node->planenum;
|
|
|
|
if (plane->type < 3)
|
|
d = p[plane->type] - plane->dist;
|
|
else
|
|
d = DotProduct (plane->normal, p) - plane->dist;
|
|
if (d < 0)
|
|
num = node->children[1];
|
|
else
|
|
num = node->children[0];
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
int
|
|
PM_PointContents (const vec3_t p)
|
|
{
|
|
float d;
|
|
int num;
|
|
dclipnode_t *node;
|
|
hull_t *hull;
|
|
plane_t *plane;
|
|
|
|
hull = &pmove.physents[0].model->brush.hulls[0];
|
|
|
|
num = hull->firstclipnode;
|
|
|
|
while (num >= 0) {
|
|
node = hull->clipnodes + num;
|
|
plane = hull->planes + node->planenum;
|
|
|
|
if (plane->type < 3)
|
|
d = p[plane->type] - plane->dist;
|
|
else
|
|
d = DotProduct (plane->normal, p) - plane->dist;
|
|
if (d < 0)
|
|
num = node->children[1];
|
|
else
|
|
num = node->children[0];
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
/*
|
|
PM_TestPlayerPosition
|
|
|
|
Returns false if the given player position is not valid (in solid)
|
|
*/
|
|
qboolean
|
|
PM_TestPlayerPosition (const vec3_t pos)
|
|
{
|
|
hull_t *hull;
|
|
int i;
|
|
physent_t *pe;
|
|
vec3_t mins, maxs, test;
|
|
|
|
for (i = 0; i < pmove.numphysent; i++) {
|
|
pe = &pmove.physents[i];
|
|
// get the clipping hull
|
|
if (pe->model)
|
|
hull = &pmove.physents[i].model->brush.hulls[1];
|
|
else {
|
|
VectorSubtract (pe->mins, player_maxs, mins);
|
|
VectorSubtract (pe->maxs, player_mins, maxs);
|
|
hull = PM_HullForBox (mins, maxs);
|
|
}
|
|
|
|
VectorSubtract (pos, pe->origin, test);
|
|
|
|
if (PM_HullPointContents (hull, hull->firstclipnode, test) ==
|
|
CONTENTS_SOLID) return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline int
|
|
bboxes_touch (const vec3_t min1, const vec3_t max1,
|
|
const vec3_t min2, const vec3_t max2)
|
|
{
|
|
if (min1[0] > max2[0] || max1[0] < min2[0])
|
|
return 0;
|
|
if (min1[1] > max2[1] || max1[1] < min2[1])
|
|
return 0;
|
|
if (min1[2] > max2[2] || max1[2] < min2[2])
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/* PM_PlayerMove */
|
|
trace_t
|
|
PM_PlayerMove (const vec3_t start, const vec3_t end)
|
|
{
|
|
hull_t *hull;
|
|
int i, check_box, move_missed;
|
|
physent_t *pe;
|
|
trace_t trace, total;
|
|
vec3_t maxs, mins, offset, start_l, end_l;
|
|
vec3_t move[2];
|
|
vec3_t forward, right, up;
|
|
int rot = 0;
|
|
vec3_t temp;
|
|
|
|
// fill in a default trace
|
|
memset (&total, 0, sizeof (trace_t));
|
|
|
|
total.fraction = 1;
|
|
total.ent = 0;
|
|
VectorCopy (end, total.endpos);
|
|
|
|
for (i = 0; i < pmove.numphysent; i++) {
|
|
pe = &pmove.physents[i];
|
|
// get the clipping hull
|
|
if (pe->hull) {
|
|
hull = pe->hull;
|
|
check_box = 0;
|
|
VectorZero (mins);
|
|
VectorZero (maxs);
|
|
} else {
|
|
check_box = 1;
|
|
if (pe->model) {
|
|
hull = &pe->model->brush.hulls[1];
|
|
VectorSubtract (pe->model->mins, player_maxs, mins);
|
|
VectorSubtract (pe->model->maxs, player_mins, maxs);
|
|
} else {
|
|
VectorSubtract (pe->mins, player_maxs, mins);
|
|
VectorSubtract (pe->maxs, player_mins, maxs);
|
|
hull = PM_HullForBox (mins, maxs);
|
|
}
|
|
}
|
|
|
|
// PM_HullForEntity (ent, mins, maxs, offset);
|
|
VectorCopy (pe->origin, offset);
|
|
|
|
VectorSubtract (start, offset, start_l);
|
|
VectorSubtract (end, offset, end_l);
|
|
|
|
rot = 0;
|
|
if (i && pe->model && pe->model->type == mod_brush
|
|
&& !VectorIsZero (pe->angles)) {
|
|
rot = 1;
|
|
AngleVectors (pe->angles, forward, right, up);
|
|
VectorNegate (right, right); // convert lhs to rhs
|
|
|
|
VectorCopy (start_l, temp);
|
|
start_l[0] = DotProduct (temp, forward);
|
|
start_l[1] = DotProduct (temp, right);
|
|
start_l[2] = DotProduct (temp, up);
|
|
|
|
VectorCopy (end_l, temp);
|
|
end_l[0] = DotProduct (temp, forward);
|
|
end_l[1] = DotProduct (temp, right);
|
|
end_l[2] = DotProduct (temp, up);
|
|
}
|
|
|
|
// fill in a default trace
|
|
memset (&trace, 0, sizeof (trace_t));
|
|
|
|
trace.fraction = 1;
|
|
trace.allsolid = true;
|
|
// trace.startsolid = true;
|
|
VectorCopy (end, trace.endpos);
|
|
|
|
move_missed = 0;
|
|
if (check_box) {
|
|
move[0][0] = min (start_l[0], end_l[0]);
|
|
move[0][1] = min (start_l[1], end_l[1]);
|
|
move[0][2] = min (start_l[2], end_l[2]);
|
|
move[1][0] = max (start_l[0], end_l[0]);
|
|
move[1][1] = max (start_l[1], end_l[1]);
|
|
move[1][2] = max (start_l[2], end_l[2]);
|
|
if (!bboxes_touch (move[0], move[1], mins, maxs)) {
|
|
move_missed = 1;
|
|
if (PM_HullPointContents (hull, hull->firstclipnode,
|
|
start_l) != CONTENTS_SOLID) {
|
|
// since the move missed the entity entirely, the start
|
|
// point is outside the entity and the entity's outside
|
|
// is not solid, the whole trace is not solid
|
|
trace.allsolid = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!move_missed) {
|
|
// trace a line through the appropriate clipping hull
|
|
MOD_TraceLine (hull, hull->firstclipnode, start_l, end_l, &trace);
|
|
}
|
|
|
|
if (trace.allsolid)
|
|
trace.startsolid = true;
|
|
if (trace.startsolid)
|
|
trace.fraction = 0;
|
|
|
|
// did we clip the move?
|
|
if (trace.fraction < total.fraction) {
|
|
// fix up trace by the offset
|
|
if (rot) {
|
|
vec_t t;
|
|
|
|
// transpose the rotation matrix to get its inverse
|
|
t = forward[1]; forward[1] = right[0]; right[0] = t;
|
|
t = forward[2]; forward[2] = up[0]; up[0] = t;
|
|
t = right[2]; right[2] = up[1]; up[1] = t;
|
|
|
|
VectorCopy (trace.endpos, temp);
|
|
trace.endpos[0] = DotProduct (temp, forward);
|
|
trace.endpos[1] = DotProduct (temp, right);
|
|
trace.endpos[2] = DotProduct (temp, up);
|
|
|
|
VectorCopy (trace.plane.normal, temp);
|
|
trace.plane.normal[0] = DotProduct (temp, forward);
|
|
trace.plane.normal[1] = DotProduct (temp, right);
|
|
trace.plane.normal[2] = DotProduct (temp, up);
|
|
}
|
|
VectorAdd (trace.endpos, offset, trace.endpos);
|
|
total = trace;
|
|
total.ent = (struct edict_s *) &pmove.physents[i];
|
|
}
|
|
|
|
}
|
|
|
|
return total;
|
|
}
|