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pm_shared.c
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pm_shared.c
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/***
*
* Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*
* This product contains software technology licensed from Id
* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
* All Rights Reserved.
*
* Use, distribution, and modification of this source code and/or resulting
* object code is restricted to non-commercial enhancements to products from
* Valve LLC. All other use, distribution, or modification is prohibited
* without written permission from Valve LLC.
*
****/
#include <assert.h>
#include "mathlib.h"
#include "const.h"
#include "usercmd.h"
#include "pm_defs.h"
#include "pm_shared.h"
#include "pm_movevars.h"
#include "pm_debug.h"
#include <stdio.h> // NULL
#include <math.h> // sqrt
#include <string.h> // strcpy
#include <stdlib.h> // atoi
#include <ctype.h> // isspace
#ifdef CLIENT_DLL
// Spectator Mode
int iJumpSpectator;
#ifndef DISABLE_JUMP_ORIGIN
float vJumpOrigin[3];
float vJumpAngles[3];
#else
extern float vJumpOrigin[3];
extern float vJumpAngles[3];
#endif
#endif
static int pm_shared_initialized = 0;
#pragma warning( disable : 4305 )
typedef enum {mod_brush, mod_sprite, mod_alias, mod_studio} modtype_t;
playermove_t *pmove = NULL;
typedef struct
{
int planenum;
short children[2]; // negative numbers are contents
} dclipnode_t;
typedef struct mplane_s
{
vec3_t normal; // surface normal
float dist; // closest appoach to origin
byte type; // for texture axis selection and fast side tests
byte signbits; // signx + signy<<1 + signz<<1
byte pad[2];
} mplane_t;
typedef struct hull_s
{
dclipnode_t *clipnodes;
mplane_t *planes;
int firstclipnode;
int lastclipnode;
vec3_t clip_mins;
vec3_t clip_maxs;
} hull_t;
// Ducking time
#define TIME_TO_DUCK 0.4
#define VEC_DUCK_HULL_MIN -18
#define VEC_DUCK_HULL_MAX 18
#define VEC_DUCK_VIEW 12
#define PM_DEAD_VIEWHEIGHT -8
#define MAX_CLIMB_SPEED 200
#define STUCK_MOVEUP 1
#define STUCK_MOVEDOWN -1
#define VEC_HULL_MIN -36
#define VEC_HULL_MAX 36
#define VEC_VIEW 28
#define STOP_EPSILON 0.1
#define CTEXTURESMAX 512 // max number of textures loaded
#define CBTEXTURENAMEMAX 13 // only load first n chars of name
#define CHAR_TEX_CONCRETE 'C' // texture types
#define CHAR_TEX_METAL 'M'
#define CHAR_TEX_DIRT 'D'
#define CHAR_TEX_VENT 'V'
#define CHAR_TEX_GRATE 'G'
#define CHAR_TEX_TILE 'T'
#define CHAR_TEX_SLOSH 'S'
#define CHAR_TEX_WOOD 'W'
#define CHAR_TEX_COMPUTER 'P'
#define CHAR_TEX_GLASS 'Y'
#define CHAR_TEX_FLESH 'F'
#define STEP_CONCRETE 0 // default step sound
#define STEP_METAL 1 // metal floor
#define STEP_DIRT 2 // dirt, sand, rock
#define STEP_VENT 3 // ventillation duct
#define STEP_GRATE 4 // metal grating
#define STEP_TILE 5 // floor tiles
#define STEP_SLOSH 6 // shallow liquid puddle
#define STEP_WADE 7 // wading in liquid
#define STEP_LADDER 8 // climbing ladder
#define PLAYER_FATAL_FALL_SPEED 1024// approx 60 feet
#define PLAYER_MAX_SAFE_FALL_SPEED 580// approx 20 feet
#define DAMAGE_FOR_FALL_SPEED (float) 100 / ( PLAYER_FATAL_FALL_SPEED - PLAYER_MAX_SAFE_FALL_SPEED )// damage per unit per second.
#define PLAYER_MIN_BOUNCE_SPEED 200
#define PLAYER_FALL_PUNCH_THRESHHOLD (float)350 // won't punch player's screen/make scrape noise unless player falling at least this fast.
#define PLAYER_LONGJUMP_SPEED 350 // how fast we longjump
#define PLAYER_DUCKING_MULTIPLIER 0.333
// double to float warning
#pragma warning(disable : 4244)
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) < (b)) ? (a) : (b))
// up / down
#define PITCH 0
// left / right
#define YAW 1
// fall over
#define ROLL 2
#define MAX_CLIENTS 32
#define CONTENTS_CURRENT_0 -9
#define CONTENTS_CURRENT_90 -10
#define CONTENTS_CURRENT_180 -11
#define CONTENTS_CURRENT_270 -12
#define CONTENTS_CURRENT_UP -13
#define CONTENTS_CURRENT_DOWN -14
#define CONTENTS_TRANSLUCENT -15
static vec3_t rgv3tStuckTable[54];
static int rgStuckLast[MAX_CLIENTS][2];
// Texture names
static int gcTextures = 0;
static char grgszTextureName[CTEXTURESMAX][CBTEXTURENAMEMAX];
static char grgchTextureType[CTEXTURESMAX];
int g_onladder = 0;
void PM_SwapTextures( int i, int j )
{
char chTemp;
char szTemp[ CBTEXTURENAMEMAX ];
strcpy( szTemp, grgszTextureName[ i ] );
chTemp = grgchTextureType[ i ];
strcpy( grgszTextureName[ i ], grgszTextureName[ j ] );
grgchTextureType[ i ] = grgchTextureType[ j ];
strcpy( grgszTextureName[ j ], szTemp );
grgchTextureType[ j ] = chTemp;
}
void PM_SortTextures( void )
{
// Bubble sort, yuck, but this only occurs at startup and it's only 512 elements...
//
int i, j;
for ( i = 0 ; i < gcTextures; i++ )
{
for ( j = i + 1; j < gcTextures; j++ )
{
if ( stricmp( grgszTextureName[ i ], grgszTextureName[ j ] ) > 0 )
{
// Swap
//
PM_SwapTextures( i, j );
}
}
}
}
void PM_InitTextureTypes()
{
char buffer[512];
int i, j;
byte *pMemFile;
int fileSize, filePos;
static qboolean bTextureTypeInit = false;
if ( bTextureTypeInit )
return;
memset(&(grgszTextureName[0][0]), 0, CTEXTURESMAX * CBTEXTURENAMEMAX);
memset(grgchTextureType, 0, CTEXTURESMAX);
gcTextures = 0;
memset(buffer, 0, 512);
fileSize = pmove->COM_FileSize( "sound/materials.txt" );
pMemFile = pmove->COM_LoadFile( "sound/materials.txt", 5, NULL );
if ( !pMemFile )
return;
filePos = 0;
// for each line in the file...
while ( pmove->memfgets( pMemFile, fileSize, &filePos, buffer, 511 ) != NULL && (gcTextures < CTEXTURESMAX) )
{
// skip whitespace
i = 0;
while(buffer[i] && isspace(buffer[i]))
i++;
if (!buffer[i])
continue;
// skip comment lines
if (buffer[i] == '/' || !isalpha(buffer[i]))
continue;
// get texture type
grgchTextureType[gcTextures] = toupper(buffer[i++]);
// skip whitespace
while(buffer[i] && isspace(buffer[i]))
i++;
if (!buffer[i])
continue;
// get sentence name
j = i;
while (buffer[j] && !isspace(buffer[j]))
j++;
if (!buffer[j])
continue;
// null-terminate name and save in sentences array
j = min (j, CBTEXTURENAMEMAX-1+i);
buffer[j] = 0;
strcpy(&(grgszTextureName[gcTextures++][0]), &(buffer[i]));
}
// Must use engine to free since we are in a .dll
pmove->COM_FreeFile ( pMemFile );
PM_SortTextures();
bTextureTypeInit = true;
}
char PM_FindTextureType( char *name )
{
int left, right, pivot;
int val;
assert( pm_shared_initialized );
left = 0;
right = gcTextures - 1;
while ( left <= right )
{
pivot = ( left + right ) / 2;
val = strnicmp( name, grgszTextureName[ pivot ], CBTEXTURENAMEMAX-1 );
if ( val == 0 )
{
return grgchTextureType[ pivot ];
}
else if ( val > 0 )
{
left = pivot + 1;
}
else if ( val < 0 )
{
right = pivot - 1;
}
}
return CHAR_TEX_CONCRETE;
}
void PM_PlayStepSound( int step, float fvol )
{
static int iSkipStep = 0;
int irand;
vec3_t hvel;
pmove->iStepLeft = !pmove->iStepLeft;
if ( !pmove->runfuncs )
{
return;
}
irand = pmove->RandomLong(0,1) + ( pmove->iStepLeft * 2 );
// FIXME mp_footsteps needs to be a movevar
if ( pmove->multiplayer && !pmove->movevars->footsteps )
return;
VectorCopy( pmove->velocity, hvel );
hvel[2] = 0.0;
if ( pmove->multiplayer && ( !g_onladder && Length( hvel ) <= 220 ) )
return;
// irand - 0,1 for right foot, 2,3 for left foot
// used to alternate left and right foot
// FIXME, move to player state
switch (step)
{
default:
case STEP_CONCRETE:
switch (irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_step1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_step3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_step2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_step4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_METAL:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_metal1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_metal3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_metal2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_metal4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_DIRT:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_dirt1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_dirt3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_dirt2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_dirt4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_VENT:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_duct1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_duct3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_duct2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_duct4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_GRATE:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_grate1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_grate3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_grate2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_grate4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_TILE:
if ( !pmove->RandomLong(0,4) )
irand = 4;
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_tile1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_tile3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_tile2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_tile4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 4: pmove->PM_PlaySound( CHAN_BODY, "player/pl_tile5.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_SLOSH:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_slosh1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_slosh3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_slosh2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_slosh4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_WADE:
if ( iSkipStep == 0 )
{
iSkipStep++;
break;
}
if ( iSkipStep++ == 3 )
{
iSkipStep = 0;
}
switch (irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_wade1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_wade2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_wade3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_wade4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
case STEP_LADDER:
switch(irand)
{
// right foot
case 0: pmove->PM_PlaySound( CHAN_BODY, "player/pl_ladder1.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 1: pmove->PM_PlaySound( CHAN_BODY, "player/pl_ladder3.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
// left foot
case 2: pmove->PM_PlaySound( CHAN_BODY, "player/pl_ladder2.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
case 3: pmove->PM_PlaySound( CHAN_BODY, "player/pl_ladder4.wav", fvol, ATTN_NORM, 0, PITCH_NORM ); break;
}
break;
}
}
int PM_MapTextureTypeStepType(char chTextureType)
{
switch (chTextureType)
{
default:
case CHAR_TEX_CONCRETE: return STEP_CONCRETE;
case CHAR_TEX_METAL: return STEP_METAL;
case CHAR_TEX_DIRT: return STEP_DIRT;
case CHAR_TEX_VENT: return STEP_VENT;
case CHAR_TEX_GRATE: return STEP_GRATE;
case CHAR_TEX_TILE: return STEP_TILE;
case CHAR_TEX_SLOSH: return STEP_SLOSH;
}
}
/*
====================
PM_CatagorizeTextureType
Determine texture info for the texture we are standing on.
====================
*/
void PM_CatagorizeTextureType( void )
{
vec3_t start, end;
const char *pTextureName;
VectorCopy( pmove->origin, start );
VectorCopy( pmove->origin, end );
// Straight down
end[2] -= 64;
// Fill in default values, just in case.
pmove->sztexturename[0] = '\0';
pmove->chtexturetype = CHAR_TEX_CONCRETE;
pTextureName = pmove->PM_TraceTexture( pmove->onground, start, end );
if ( !pTextureName )
return;
// strip leading '-0' or '+0~' or '{' or '!'
if (*pTextureName == '-' || *pTextureName == '+')
pTextureName += 2;
if (*pTextureName == '{' || *pTextureName == '!' || *pTextureName == '~' || *pTextureName == ' ')
pTextureName++;
// '}}'
strcpy( pmove->sztexturename, pTextureName);
pmove->sztexturename[ CBTEXTURENAMEMAX - 1 ] = 0;
// get texture type
pmove->chtexturetype = PM_FindTextureType( pmove->sztexturename );
}
void PM_UpdateStepSound( void )
{
int fWalking;
float fvol;
vec3_t knee;
vec3_t feet;
vec3_t center;
float height;
float speed;
float velrun;
float velwalk;
float flduck;
int fLadder;
int step;
if ( pmove->flTimeStepSound > 0 )
return;
if ( pmove->flags & FL_FROZEN )
return;
PM_CatagorizeTextureType();
speed = Length( pmove->velocity );
// determine if we are on a ladder
fLadder = ( pmove->movetype == MOVETYPE_FLY );// IsOnLadder();
// UNDONE: need defined numbers for run, walk, crouch, crouch run velocities!!!!
if ( ( pmove->flags & FL_DUCKING) || fLadder )
{
velwalk = 60; // These constants should be based on cl_movespeedkey * cl_forwardspeed somehow
velrun = 80; // UNDONE: Move walking to server
flduck = 100;
}
else
{
velwalk = 120;
velrun = 210;
flduck = 0;
}
// If we're on a ladder or on the ground, and we're moving fast enough,
// play step sound. Also, if pmove->flTimeStepSound is zero, get the new
// sound right away - we just started moving in new level.
if ( (fLadder || ( pmove->onground != -1 ) ) &&
( Length( pmove->velocity ) > 0.0 ) &&
( speed >= velwalk || !pmove->flTimeStepSound ) )
{
fWalking = speed < velrun;
VectorCopy( pmove->origin, center );
VectorCopy( pmove->origin, knee );
VectorCopy( pmove->origin, feet );
height = pmove->player_maxs[ pmove->usehull ][ 2 ] - pmove->player_mins[ pmove->usehull ][ 2 ];
knee[2] = pmove->origin[2] - 0.3 * height;
feet[2] = pmove->origin[2] - 0.5 * height;
// find out what we're stepping in or on...
if (fLadder)
{
step = STEP_LADDER;
fvol = 0.35;
pmove->flTimeStepSound = 350;
}
else if ( pmove->PM_PointContents ( knee, NULL ) == CONTENTS_WATER )
{
step = STEP_WADE;
fvol = 0.65;
pmove->flTimeStepSound = 600;
}
else if ( pmove->PM_PointContents ( feet, NULL ) == CONTENTS_WATER )
{
step = STEP_SLOSH;
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
}
else
{
// find texture under player, if different from current texture,
// get material type
step = PM_MapTextureTypeStepType( pmove->chtexturetype );
switch ( pmove->chtexturetype )
{
default:
case CHAR_TEX_CONCRETE:
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_METAL:
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_DIRT:
fvol = fWalking ? 0.25 : 0.55;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_VENT:
fvol = fWalking ? 0.4 : 0.7;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_GRATE:
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_TILE:
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
case CHAR_TEX_SLOSH:
fvol = fWalking ? 0.2 : 0.5;
pmove->flTimeStepSound = fWalking ? 400 : 300;
break;
}
}
pmove->flTimeStepSound += flduck; // slower step time if ducking
// play the sound
// 35% volume if ducking
if ( pmove->flags & FL_DUCKING )
{
fvol *= 0.35;
}
PM_PlayStepSound( step, fvol );
}
}
/*
================
PM_AddToTouched
Add's the trace result to touch list, if contact is not already in list.
================
*/
qboolean PM_AddToTouched(pmtrace_t tr, vec3_t impactvelocity)
{
int i;
for (i = 0; i < pmove->numtouch; i++)
{
if (pmove->touchindex[i].ent == tr.ent)
break;
}
if (i != pmove->numtouch) // Already in list.
return false;
VectorCopy( impactvelocity, tr.deltavelocity );
if (pmove->numtouch >= MAX_PHYSENTS)
pmove->Con_DPrintf("Too many entities were touched!\n");
pmove->touchindex[pmove->numtouch++] = tr;
return true;
}
/*
================
PM_CheckVelocity
See if the player has a bogus velocity value.
================
*/
void PM_CheckVelocity ()
{
int i;
//
// bound velocity
//
for (i=0 ; i<3 ; i++)
{
// See if it's bogus.
if (IS_NAN(pmove->velocity[i]))
{
pmove->Con_Printf ("PM Got a NaN velocity %i\n", i);
pmove->velocity[i] = 0;
}
if (IS_NAN(pmove->origin[i]))
{
pmove->Con_Printf ("PM Got a NaN origin on %i\n", i);
pmove->origin[i] = 0;
}
// Bound it.
if (pmove->velocity[i] > pmove->movevars->maxvelocity)
{
pmove->Con_DPrintf ("PM Got a velocity too high on %i\n", i);
pmove->velocity[i] = pmove->movevars->maxvelocity;
}
else if (pmove->velocity[i] < -pmove->movevars->maxvelocity)
{
pmove->Con_DPrintf ("PM Got a velocity too low on %i\n", i);
pmove->velocity[i] = -pmove->movevars->maxvelocity;
}
}
}
/*
==================
PM_ClipVelocity
Slide off of the impacting object
returns the blocked flags:
0x01 == floor
0x02 == step / wall
==================
*/
int PM_ClipVelocity (vec3_t in, vec3_t normal, vec3_t out, float overbounce)
{
float backoff;
float change;
float angle;
int i, blocked;
angle = normal[ 2 ];
blocked = 0x00; // Assume unblocked.
if (angle > 0) // If the plane that is blocking us has a positive z component, then assume it's a floor.
blocked |= 0x01; //
if (!angle) // If the plane has no Z, it is vertical (wall/step)
blocked |= 0x02; //
// Determine how far along plane to slide based on incoming direction.
// Scale by overbounce factor.
backoff = DotProduct (in, normal) * overbounce;
for (i=0 ; i<3 ; i++)
{
change = normal[i]*backoff;
out[i] = in[i] - change;
// If out velocity is too small, zero it out.
if (out[i] > -STOP_EPSILON && out[i] < STOP_EPSILON)
out[i] = 0;
}
// Return blocking flags.
return blocked;
}
void PM_AddCorrectGravity ()
{
float ent_gravity;
if ( pmove->waterjumptime )
return;
if (pmove->gravity)
ent_gravity = pmove->gravity;
else
ent_gravity = 1.0;
// Add gravity so they'll be in the correct position during movement
// yes, this 0.5 looks wrong, but it's not.
pmove->velocity[2] -= (ent_gravity * pmove->movevars->gravity * 0.5 * pmove->frametime );
pmove->velocity[2] += pmove->basevelocity[2] * pmove->frametime;
pmove->basevelocity[2] = 0;
PM_CheckVelocity();
}
void PM_FixupGravityVelocity ()
{
float ent_gravity;
if ( pmove->waterjumptime )
return;
if (pmove->gravity)
ent_gravity = pmove->gravity;
else
ent_gravity = 1.0;
// Get the correct velocity for the end of the dt
pmove->velocity[2] -= (ent_gravity * pmove->movevars->gravity * pmove->frametime * 0.5 );
PM_CheckVelocity();
}
/*
============
PM_FlyMove
The basic solid body movement clip that slides along multiple planes
============
*/
int PM_FlyMove (void)
{
int bumpcount, numbumps;
vec3_t dir;
float d;
int numplanes;
vec3_t planes[MAX_CLIP_PLANES];
vec3_t primal_velocity, original_velocity;
vec3_t new_velocity;
int i, j;
pmtrace_t trace;
vec3_t end;
float time_left, allFraction;
int blocked;
numbumps = 4; // Bump up to four times
blocked = 0; // Assume not blocked
numplanes = 0; // and not sliding along any planes
VectorCopy (pmove->velocity, original_velocity); // Store original velocity
VectorCopy (pmove->velocity, primal_velocity);
allFraction = 0;
time_left = pmove->frametime; // Total time for this movement operation.
for (bumpcount=0 ; bumpcount<numbumps ; bumpcount++)
{
if (!pmove->velocity[0] && !pmove->velocity[1] && !pmove->velocity[2])
break;
// Assume we can move all the way from the current origin to the
// end point.
for (i=0 ; i<3 ; i++)
end[i] = pmove->origin[i] + time_left * pmove->velocity[i];
// See if we can make it from origin to end point.
trace = pmove->PM_PlayerTrace (pmove->origin, end, PM_NORMAL, -1 );
allFraction += trace.fraction;
// If we started in a solid object, or we were in solid space
// the whole way, zero out our velocity and return that we
// are blocked by floor and wall.
if (trace.allsolid)
{ // entity is trapped in another solid
VectorCopy (vec3_origin, pmove->velocity);
//Con_DPrintf("Trapped 4\n");
return 4;
}
// If we moved some portion of the total distance, then
// copy the end position into the pmove->origin and
// zero the plane counter.
if (trace.fraction > 0)
{ // actually covered some distance
VectorCopy (trace.endpos, pmove->origin);
VectorCopy (pmove->velocity, original_velocity);
numplanes = 0;
}
// If we covered the entire distance, we are done
// and can return.
if (trace.fraction == 1)
break; // moved the entire distance
//if (!trace.ent)
// Sys_Error ("PM_PlayerTrace: !trace.ent");
// Save entity that blocked us (since fraction was < 1.0)
// for contact
// Add it if it's not already in the list!!!
PM_AddToTouched(trace, pmove->velocity);
// If the plane we hit has a high z component in the normal, then
// it's probably a floor
if (trace.plane.normal[2] > 0.7)
{
blocked |= 1; // floor
}
// If the plane has a zero z component in the normal, then it's a
// step or wall
if (!trace.plane.normal[2])
{
blocked |= 2; // step / wall
//Con_DPrintf("Blocked by %i\n", trace.ent);
}
// Reduce amount of pmove->frametime left by total time left * fraction
// that we covered.
time_left -= time_left * trace.fraction;
// Did we run out of planes to clip against?
if (numplanes >= MAX_CLIP_PLANES)
{ // this shouldn't really happen
// Stop our movement if so.
VectorCopy (vec3_origin, pmove->velocity);
//Con_DPrintf("Too many planes 4\n");
break;
}
// Set up next clipping plane
VectorCopy (trace.plane.normal, planes[numplanes]);
numplanes++;
//
// modify original_velocity so it parallels all of the clip planes
//
if ( pmove->movetype == MOVETYPE_WALK &&
((pmove->onground == -1) || (pmove->friction != 1)) ) // relfect player velocity
{
for ( i = 0; i < numplanes; i++ )
{
if ( planes[i][2] > 0.7 )
{// floor or slope
PM_ClipVelocity( original_velocity, planes[i], new_velocity, 1 );
VectorCopy( new_velocity, original_velocity );
}
else
PM_ClipVelocity( original_velocity, planes[i], new_velocity, 1.0 + pmove->movevars->bounce * (1-pmove->friction) );
}
VectorCopy( new_velocity, pmove->velocity );
VectorCopy( new_velocity, original_velocity );
}
else
{
for (i=0 ; i<numplanes ; i++)
{
PM_ClipVelocity (
original_velocity,
planes[i],
pmove->velocity,
1);
for (j=0 ; j<numplanes ; j++)
if (j != i)
{
// Are we now moving against this plane?
if (DotProduct (pmove->velocity, planes[j]) < 0)
break; // not ok
}
if (j == numplanes) // Didn't have to clip, so we're ok
break;
}
// Did we go all the way through plane set
if (i != numplanes)
{ // go along this plane
// pmove->velocity is set in clipping call, no need to set again.
;
}
else
{ // go along the crease
if (numplanes != 2)
{
//Con_Printf ("clip velocity, numplanes == %i\n",numplanes);
VectorCopy (vec3_origin, pmove->velocity);
//Con_DPrintf("Trapped 4\n");
break;
}
CrossProduct (planes[0], planes[1], dir);
d = DotProduct (dir, pmove->velocity);
VectorScale (dir, d, pmove->velocity );
}
//
// if original velocity is against the original velocity, stop dead
// to avoid tiny occilations in sloping corners
//
if (DotProduct (pmove->velocity, primal_velocity) <= 0)
{
//Con_DPrintf("Back\n");
VectorCopy (vec3_origin, pmove->velocity);
break;
}
}
}
if ( allFraction == 0 )
{
VectorCopy (vec3_origin, pmove->velocity);
//Con_DPrintf( "Don't stick\n" );
}
return blocked;
}
/*
==============
PM_Accelerate
==============
*/
void PM_Accelerate (vec3_t wishdir, float wishspeed, float accel)
{
int i;
float addspeed, accelspeed, currentspeed;
// Dead player's don't accelerate
if (pmove->dead)
return;
// If waterjumping, don't accelerate
if (pmove->waterjumptime)
return;
// See if we are changing direction a bit
currentspeed = DotProduct (pmove->velocity, wishdir);