ref: db9b193ab08b9e033e80887e31ac7cca8203d906
dir: /qw/view.c/
// view.c -- player eye positioning
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
/*
The view is allowed to move slightly from it's true position for bobbing,
but if it exceeds 8 pixels linear distance (spherical, not box), the list of
entities sent from the server may not include everything in the pvs, especially
when crossing a water boudnary.
*/
cvar_t lcd_x = {"lcd_x", "0"}; // FIXME: make this work sometime...
cvar_t cl_rollspeed = {"cl_rollspeed", "200"};
cvar_t cl_rollangle = {"cl_rollangle", "2.0"};
cvar_t cl_bob = {"cl_bob","0.02", false};
cvar_t cl_bobcycle = {"cl_bobcycle","0.6", false};
cvar_t cl_bobup = {"cl_bobup","0.5", false};
cvar_t v_kicktime = {"v_kicktime", "0.5", false};
cvar_t v_kickroll = {"v_kickroll", "0.6", false};
cvar_t v_kickpitch = {"v_kickpitch", "0.6", false};
cvar_t v_iyaw_cycle = {"v_iyaw_cycle", "2", false};
cvar_t v_iroll_cycle = {"v_iroll_cycle", "0.5", false};
cvar_t v_ipitch_cycle = {"v_ipitch_cycle", "1", false};
cvar_t v_iyaw_level = {"v_iyaw_level", "0.3", false};
cvar_t v_iroll_level = {"v_iroll_level", "0.1", false};
cvar_t v_ipitch_level = {"v_ipitch_level", "0.3", false};
cvar_t v_idlescale = {"v_idlescale", "0", false};
cvar_t crosshair = {"crosshair", "0", true};
cvar_t crosshaircolor = {"crosshaircolor", "79", true};
cvar_t cl_crossx = {"cl_crossx", "0", true};
cvar_t cl_crossy = {"cl_crossy", "0", true};
cvar_t v_contentblend = {"v_contentblend", "1", false};
float v_dmg_time, v_dmg_roll, v_dmg_pitch;
extern int in_forward, in_forward2, in_back;
frame_t *view_frame;
player_state_t *view_message;
/*
===============
V_CalcRoll
===============
*/
float V_CalcRoll (vec3_t angles, vec3_t velocity)
{
vec3_t forward, right, up;
float sign;
float side;
float value;
AngleVectors (angles, forward, right, up);
side = DotProduct (velocity, right);
sign = side < 0 ? -1 : 1;
side = fabs(side);
value = cl_rollangle.value;
if (side < cl_rollspeed.value)
side = side * value / cl_rollspeed.value;
else
side = value;
return side*sign;
}
/*
===============
V_CalcBob
===============
*/
float V_CalcBob (void)
{
static double bobtime;
static float bob;
float cycle;
if (cl.spectator)
return 0;
if (onground == -1)
return bob; // just use old value
bobtime += host_frametime;
cycle = bobtime - (int)(bobtime/cl_bobcycle.value)*cl_bobcycle.value;
cycle /= cl_bobcycle.value;
if (cycle < cl_bobup.value)
cycle = M_PI * cycle / cl_bobup.value;
else
cycle = M_PI + M_PI*(cycle-cl_bobup.value)/(1.0 - cl_bobup.value);
// bob is proportional to simulated velocity in the xy plane
// (don't count Z, or jumping messes it up)
bob = sqrt(cl.simvel[0]*cl.simvel[0] + cl.simvel[1]*cl.simvel[1]) * cl_bob.value;
bob = bob*0.3 + bob*0.7*sin(cycle);
if (bob > 4)
bob = 4;
else if (bob < -7)
bob = -7;
return bob;
}
//=============================================================================
cvar_t v_centermove = {"v_centermove", "0.15", false};
cvar_t v_centerspeed = {"v_centerspeed","500"};
void V_StartPitchDrift (void)
{
if (cl.laststop == cl.time)
return; // something else is keeping it from drifting
if (cl.nodrift || !cl.pitchvel)
{
cl.pitchvel = v_centerspeed.value;
cl.nodrift = false;
cl.driftmove = 0;
}
}
void V_StopPitchDrift (void)
{
cl.laststop = cl.time;
cl.nodrift = true;
cl.pitchvel = 0;
}
/*
===============
V_DriftPitch
Moves the client pitch angle towards cl.idealpitch sent by the server.
If the user is adjusting pitch manually, either with lookup/lookdown,
mlook and mouse, or klook and keyboard, pitch drifting is constantly stopped.
Drifting is enabled when the center view key is hit, mlook is released and
lookspring is non 0, or when
===============
*/
void V_DriftPitch (void)
{
float delta, move;
if (view_message->onground == -1 || cls.demoplayback )
{
cl.driftmove = 0;
cl.pitchvel = 0;
return;
}
// don't count small mouse motion
if (cl.nodrift)
{
if ( fabs(cl.frames[(cls.netchan.outgoing_sequence-1)&UPDATE_MASK].cmd.forwardmove) < 200)
cl.driftmove = 0;
else
cl.driftmove += host_frametime;
if ( cl.driftmove > v_centermove.value)
{
V_StartPitchDrift ();
}
return;
}
delta = 0 - cl.viewangles[PITCH];
if (!delta)
{
cl.pitchvel = 0;
return;
}
move = host_frametime * cl.pitchvel;
cl.pitchvel += host_frametime * v_centerspeed.value;
//Con_Printf ("move: %f (%f)\n", move, host_frametime);
if (delta > 0)
{
if (move > delta)
{
cl.pitchvel = 0;
move = delta;
}
cl.viewangles[PITCH] += move;
}
else if (delta < 0)
{
if (move > -delta)
{
cl.pitchvel = 0;
move = -delta;
}
cl.viewangles[PITCH] -= move;
}
}
/*
==============================================================================
PALETTE FLASHES
==============================================================================
*/
cshift_t cshift_empty = { {130,80,50}, 0 };
cshift_t cshift_water = { {130,80,50}, 128 };
cshift_t cshift_slime = { {0,25,5}, 150 };
cshift_t cshift_lava = { {255,80,0}, 150 };
cvar_t v_gamma = {"gamma", "1", true};
byte gammatable[256]; // palette is sent through this
void BuildGammaTable (float g)
{
int i, inf;
if (g == 1.0)
{
for (i=0 ; i<256 ; i++)
gammatable[i] = i;
return;
}
for (i=0 ; i<256 ; i++)
{
inf = 255 * pow ( (i+0.5)/255.5 , g ) + 0.5;
if (inf < 0)
inf = 0;
if (inf > 255)
inf = 255;
gammatable[i] = inf;
}
}
/*
=================
V_CheckGamma
=================
*/
bool V_CheckGamma (void)
{
static float oldgammavalue;
if (v_gamma.value == oldgammavalue)
return false;
oldgammavalue = v_gamma.value;
BuildGammaTable (v_gamma.value);
vid.recalc_refdef = 1; // force a surface cache flush
return true;
}
/*
===============
V_ParseDamage
===============
*/
void V_ParseDamage (void)
{
int armor, blood;
vec3_t from;
int i;
vec3_t forward, right, up;
float side;
float count;
armor = MSG_ReadByte ();
blood = MSG_ReadByte ();
for (i=0 ; i<3 ; i++)
from[i] = MSG_ReadCoord ();
count = blood*0.5 + armor*0.5;
if (count < 10)
count = 10;
cl.faceanimtime = cl.time + 0.2; // but sbar face into pain frame
cl.cshifts[CSHIFT_DAMAGE].percent += 3*count;
if (cl.cshifts[CSHIFT_DAMAGE].percent < 0)
cl.cshifts[CSHIFT_DAMAGE].percent = 0;
if (cl.cshifts[CSHIFT_DAMAGE].percent > 150)
cl.cshifts[CSHIFT_DAMAGE].percent = 150;
if (armor > blood)
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 200;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 100;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 100;
}
else if (armor)
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 220;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 50;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 50;
}
else
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 255;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 0;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 0;
}
//
// calculate view angle kicks
//
VectorSubtract (from, cl.simorg, from);
VectorNormalize (from);
AngleVectors (cl.simangles, forward, right, up);
side = DotProduct (from, right);
v_dmg_roll = count*side*v_kickroll.value;
side = DotProduct (from, forward);
v_dmg_pitch = count*side*v_kickpitch.value;
v_dmg_time = v_kicktime.value;
}
/*
==================
V_cshift_f
==================
*/
void V_cshift_f (void)
{
cshift_empty.destcolor[0] = atoi(Cmd_Argv(1));
cshift_empty.destcolor[1] = atoi(Cmd_Argv(2));
cshift_empty.destcolor[2] = atoi(Cmd_Argv(3));
cshift_empty.percent = atoi(Cmd_Argv(4));
}
/*
==================
V_BonusFlash_f
When you run over an item, the server sends this command
==================
*/
void V_BonusFlash_f (void)
{
cl.cshifts[CSHIFT_BONUS].destcolor[0] = 215;
cl.cshifts[CSHIFT_BONUS].destcolor[1] = 186;
cl.cshifts[CSHIFT_BONUS].destcolor[2] = 69;
cl.cshifts[CSHIFT_BONUS].percent = 50;
}
/*
=============
V_SetContentsColor
Underwater, lava, etc each has a color shift
=============
*/
void V_SetContentsColor (int contents)
{
if (!v_contentblend.value) {
cl.cshifts[CSHIFT_CONTENTS] = cshift_empty;
return;
}
switch (contents)
{
case CONTENTS_EMPTY:
cl.cshifts[CSHIFT_CONTENTS] = cshift_empty;
break;
case CONTENTS_LAVA:
cl.cshifts[CSHIFT_CONTENTS] = cshift_lava;
break;
case CONTENTS_SOLID:
case CONTENTS_SLIME:
cl.cshifts[CSHIFT_CONTENTS] = cshift_slime;
break;
default:
cl.cshifts[CSHIFT_CONTENTS] = cshift_water;
}
}
/*
=============
V_CalcPowerupCshift
=============
*/
void V_CalcPowerupCshift (void)
{
if (cl.stats[STAT_ITEMS] & IT_QUAD)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else if (cl.stats[STAT_ITEMS] & IT_SUIT)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 20;
}
else if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
cl.cshifts[CSHIFT_POWERUP].percent = 100;
}
else if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else
cl.cshifts[CSHIFT_POWERUP].percent = 0;
}
/*
=============
V_UpdatePalette
=============
*/
void V_UpdatePalette (void)
{
int i, j;
bool new;
byte *basepal, *newpal;
byte pal[768];
int r,g,b;
bool force;
V_CalcPowerupCshift ();
new = false;
for (i=0 ; i<NUM_CSHIFTS ; i++)
{
if (cl.cshifts[i].percent != cl.prev_cshifts[i].percent)
{
new = true;
cl.prev_cshifts[i].percent = cl.cshifts[i].percent;
}
for (j=0 ; j<3 ; j++)
if (cl.cshifts[i].destcolor[j] != cl.prev_cshifts[i].destcolor[j])
{
new = true;
cl.prev_cshifts[i].destcolor[j] = cl.cshifts[i].destcolor[j];
}
}
// drop the damage value
cl.cshifts[CSHIFT_DAMAGE].percent -= host_frametime*150;
if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
cl.cshifts[CSHIFT_DAMAGE].percent = 0;
// drop the bonus value
cl.cshifts[CSHIFT_BONUS].percent -= host_frametime*100;
if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
cl.cshifts[CSHIFT_BONUS].percent = 0;
force = V_CheckGamma ();
if (!new && !force)
return;
basepal = host_basepal;
newpal = pal;
for (i=0 ; i<256 ; i++)
{
r = basepal[0];
g = basepal[1];
b = basepal[2];
basepal += 3;
for (j=0 ; j<NUM_CSHIFTS ; j++)
{
r += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[0]-r))>>8;
g += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[1]-g))>>8;
b += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[2]-b))>>8;
}
newpal[0] = gammatable[r];
newpal[1] = gammatable[g];
newpal[2] = gammatable[b];
newpal += 3;
}
VID_ShiftPalette (pal);
}
/*
==============================================================================
VIEW RENDERING
==============================================================================
*/
float angledelta (float a)
{
a = anglemod(a);
if (a > 180)
a -= 360;
return a;
}
/*
==================
CalcGunAngle
==================
*/
void CalcGunAngle (void)
{
float yaw, pitch, move;
static float oldyaw = 0;
static float oldpitch = 0;
yaw = r_refdef.viewangles[YAW];
pitch = -r_refdef.viewangles[PITCH];
yaw = angledelta(yaw - r_refdef.viewangles[YAW]) * 0.4;
if (yaw > 10)
yaw = 10;
if (yaw < -10)
yaw = -10;
pitch = angledelta(-pitch - r_refdef.viewangles[PITCH]) * 0.4;
if (pitch > 10)
pitch = 10;
if (pitch < -10)
pitch = -10;
move = host_frametime*20;
if (yaw > oldyaw)
{
if (oldyaw + move < yaw)
yaw = oldyaw + move;
}
else
{
if (oldyaw - move > yaw)
yaw = oldyaw - move;
}
if (pitch > oldpitch)
{
if (oldpitch + move < pitch)
pitch = oldpitch + move;
}
else
{
if (oldpitch - move > pitch)
pitch = oldpitch - move;
}
oldyaw = yaw;
oldpitch = pitch;
cl.viewent.angles[YAW] = r_refdef.viewangles[YAW] + yaw;
cl.viewent.angles[PITCH] = - (r_refdef.viewangles[PITCH] + pitch);
}
/*
==============
V_BoundOffsets
==============
*/
void V_BoundOffsets (void)
{
// absolutely bound refresh reletive to entity clipping hull
// so the view can never be inside a solid wall
if (r_refdef.vieworg[0] < cl.simorg[0] - 14)
r_refdef.vieworg[0] = cl.simorg[0] - 14;
else if (r_refdef.vieworg[0] > cl.simorg[0] + 14)
r_refdef.vieworg[0] = cl.simorg[0] + 14;
if (r_refdef.vieworg[1] < cl.simorg[1] - 14)
r_refdef.vieworg[1] = cl.simorg[1] - 14;
else if (r_refdef.vieworg[1] > cl.simorg[1] + 14)
r_refdef.vieworg[1] = cl.simorg[1] + 14;
if (r_refdef.vieworg[2] < cl.simorg[2] - 22)
r_refdef.vieworg[2] = cl.simorg[2] - 22;
else if (r_refdef.vieworg[2] > cl.simorg[2] + 30)
r_refdef.vieworg[2] = cl.simorg[2] + 30;
}
/*
==============
V_AddIdle
Idle swaying
==============
*/
void V_AddIdle (void)
{
r_refdef.viewangles[ROLL] += v_idlescale.value * sin(cl.time*v_iroll_cycle.value) * v_iroll_level.value;
r_refdef.viewangles[PITCH] += v_idlescale.value * sin(cl.time*v_ipitch_cycle.value) * v_ipitch_level.value;
r_refdef.viewangles[YAW] += v_idlescale.value * sin(cl.time*v_iyaw_cycle.value) * v_iyaw_level.value;
cl.viewent.angles[ROLL] -= v_idlescale.value * sin(cl.time*v_iroll_cycle.value) * v_iroll_level.value;
cl.viewent.angles[PITCH] -= v_idlescale.value * sin(cl.time*v_ipitch_cycle.value) * v_ipitch_level.value;
cl.viewent.angles[YAW] -= v_idlescale.value * sin(cl.time*v_iyaw_cycle.value) * v_iyaw_level.value;
}
/*
==============
V_CalcViewRoll
Roll is induced by movement and damage
==============
*/
void V_CalcViewRoll (void)
{
float side;
side = V_CalcRoll (cl.simangles, cl.simvel);
r_refdef.viewangles[ROLL] += side;
if (v_dmg_time > 0)
{
r_refdef.viewangles[ROLL] += v_dmg_time/v_kicktime.value*v_dmg_roll;
r_refdef.viewangles[PITCH] += v_dmg_time/v_kicktime.value*v_dmg_pitch;
v_dmg_time -= host_frametime;
}
}
/*
==================
V_CalcIntermissionRefdef
==================
*/
void V_CalcIntermissionRefdef (void)
{
entity_t *view;
float old;
// view is the weapon model
view = &cl.viewent;
VectorCopy (cl.simorg, r_refdef.vieworg);
VectorCopy (cl.simangles, r_refdef.viewangles);
view->model = NULL;
// allways idle in intermission
old = v_idlescale.value;
v_idlescale.value = 1;
V_AddIdle ();
v_idlescale.value = old;
}
/*
==================
V_CalcRefdef
==================
*/
void V_CalcRefdef (void)
{
entity_t *view;
int i;
vec3_t forward, right, up;
float bob;
static float oldz = 0;
V_DriftPitch ();
// view is the weapon model (only visible from inside body)
view = &cl.viewent;
bob = V_CalcBob ();
// refresh position from simulated origin
VectorCopy (cl.simorg, r_refdef.vieworg);
r_refdef.vieworg[2] += bob;
// never let it sit exactly on a node line, because a water plane can
// dissapear when viewed with the eye exactly on it.
// the server protocol only specifies to 1/8 pixel, so add 1/16 in each axis
r_refdef.vieworg[0] += 1.0/16;
r_refdef.vieworg[1] += 1.0/16;
r_refdef.vieworg[2] += 1.0/16;
VectorCopy (cl.simangles, r_refdef.viewangles);
V_CalcViewRoll ();
V_AddIdle ();
if (view_message->flags & PF_GIB)
r_refdef.vieworg[2] += 8; // gib view height
else if (view_message->flags & PF_DEAD)
r_refdef.vieworg[2] -= 16; // corpse view height
else
r_refdef.vieworg[2] += 22; // view height
if (view_message->flags & PF_DEAD) // PF_GIB will also set PF_DEAD
r_refdef.viewangles[ROLL] = 80; // dead view angle
// offsets
AngleVectors (cl.simangles, forward, right, up);
// set up gun position
VectorCopy (cl.simangles, view->angles);
CalcGunAngle ();
VectorCopy (cl.simorg, view->origin);
view->origin[2] += 22;
for (i=0 ; i<3 ; i++)
{
view->origin[i] += forward[i]*bob*0.4;
// view->origin[i] += right[i]*bob*0.4;
// view->origin[i] += up[i]*bob*0.8;
}
view->origin[2] += bob;
// fudge position around to keep amount of weapon visible
// roughly equal with different FOV
if (scr_viewsize.value == 110)
view->origin[2] += 1;
else if (scr_viewsize.value == 100)
view->origin[2] += 2;
else if (scr_viewsize.value == 90)
view->origin[2] += 1;
else if (scr_viewsize.value == 80)
view->origin[2] += 0.5;
if (view_message->flags & (PF_GIB|PF_DEAD) )
view->model = NULL;
else
view->model = cl.model_precache[cl.stats[STAT_WEAPON]];
view->frame = view_message->weaponframe;
view->colormap = vid.colormap;
// set up the refresh position
r_refdef.viewangles[PITCH] += cl.punchangle;
// smooth out stair step ups
if ( (view_message->onground != -1) && (cl.simorg[2] - oldz > 0) )
{
float steptime;
steptime = host_frametime;
oldz += steptime * 80;
if (oldz > cl.simorg[2])
oldz = cl.simorg[2];
if (cl.simorg[2] - oldz > 12)
oldz = cl.simorg[2] - 12;
r_refdef.vieworg[2] += oldz - cl.simorg[2];
view->origin[2] += oldz - cl.simorg[2];
}
else
oldz = cl.simorg[2];
}
/*
=============
DropPunchAngle
=============
*/
void DropPunchAngle (void)
{
cl.punchangle -= 10*host_frametime;
if (cl.punchangle < 0)
cl.punchangle = 0;
}
/*
==================
V_RenderView
The player's clipping box goes from (-16 -16 -24) to (16 16 32) from
the entity origin, so any view position inside that will be valid
==================
*/
extern vrect_t scr_vrect;
void V_RenderView (void)
{
// if (cl.simangles[ROLL])
// Sys_Error ("cl.simangles[ROLL]"); // DEBUG
cl.simangles[ROLL] = 0; // FIXME @@@
if (cls.state != ca_active)
return;
view_frame = &cl.frames[cls.netchan.incoming_sequence & UPDATE_MASK];
view_message = &view_frame->playerstate[cl.playernum];
DropPunchAngle ();
if (cl.intermission)
{ // intermission / finale rendering
V_CalcIntermissionRefdef ();
}
else
{
V_CalcRefdef ();
}
R_PushDlights ();
R_RenderView ();
if (crosshair.value)
Draw_Crosshair();
}
//============================================================================
/*
=============
V_Init
=============
*/
void V_Init (void)
{
Cmd_AddCommand ("v_cshift", V_cshift_f);
Cmd_AddCommand ("bf", V_BonusFlash_f);
Cmd_AddCommand ("centerview", V_StartPitchDrift);
Cvar_RegisterVariable (&v_centermove);
Cvar_RegisterVariable (&v_centerspeed);
Cvar_RegisterVariable (&v_iyaw_cycle);
Cvar_RegisterVariable (&v_iroll_cycle);
Cvar_RegisterVariable (&v_ipitch_cycle);
Cvar_RegisterVariable (&v_iyaw_level);
Cvar_RegisterVariable (&v_iroll_level);
Cvar_RegisterVariable (&v_ipitch_level);
Cvar_RegisterVariable (&v_contentblend);
Cvar_RegisterVariable (&v_idlescale);
Cvar_RegisterVariable (&crosshaircolor);
Cvar_RegisterVariable (&crosshair);
Cvar_RegisterVariable (&cl_crossx);
Cvar_RegisterVariable (&cl_crossy);
Cvar_RegisterVariable (&cl_rollspeed);
Cvar_RegisterVariable (&cl_rollangle);
Cvar_RegisterVariable (&cl_bob);
Cvar_RegisterVariable (&cl_bobcycle);
Cvar_RegisterVariable (&cl_bobup);
Cvar_RegisterVariable (&v_kicktime);
Cvar_RegisterVariable (&v_kickroll);
Cvar_RegisterVariable (&v_kickpitch);
BuildGammaTable (1.0); // no gamma yet
Cvar_RegisterVariable (&v_gamma);
}