ref: 2433bad34328371645a8c869c71d2c2cc9b46d72
dir: /view.c/
// view.c -- player eye positioning #include <u.h> #include <libc.h> #include <stdio.h> #include "quakedef.h" #include "r_local.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"}; cvar_t lcd_yaw = {"lcd_yaw","0"}; cvar_t scr_ofsx = {"scr_ofsx","0", false}; cvar_t scr_ofsy = {"scr_ofsy","0", false}; cvar_t scr_ofsz = {"scr_ofsz","0", false}; 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 cl_crossx = {"cl_crossx", "0", false}; cvar_t cl_crossy = {"cl_crossy", "0", false}; cvar_t gl_cshiftpercent = {"gl_cshiftpercent", "100", false}; float v_dmg_time, v_dmg_roll, v_dmg_pitch; extern int in_forward, in_forward2, in_back; /* =============== V_CalcRoll Used by view and sv_user =============== */ vec3_t forward, right, up; float V_CalcRoll (vec3_t angles, vec3_t velocity) { 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 (cl.inwater) // value *= 6; if (side < cl_rollspeed.value) side = side * value / cl_rollspeed.value; else side = value; return side*sign; } /* =============== V_CalcBob =============== */ float V_CalcBob (void) { float bob; float cycle; cycle = cl.time - (int)(cl.time/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 velocity in the xy plane // (don't count Z, or jumping messes it up) bob = sqrt(cl.velocity[0]*cl.velocity[0] + cl.velocity[1]*cl.velocity[1]) * cl_bob.value; //Con_Printf ("speed: %5.1f\n", Length(cl.velocity)); 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 (noclip_anglehack || !cl.onground || cls.demoplayback ) { cl.driftmove = 0; cl.pitchvel = 0; return; } // don't count small mouse motion if (cl.nodrift) { if ( fabs(cl.cmd.forwardmove) < cl_forwardspeed.value) cl.driftmove = 0; else cl.driftmove += host_frametime; if ( cl.driftmove > v_centermove.value) { V_StartPitchDrift (); } return; } delta = cl.idealpitch - 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 ================= */ qboolean 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; entity_t *ent; 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 // ent = &cl_entities[cl.viewentity]; VectorSubtract (from, ent->origin, from); VectorNormalize (from); AngleVectors (ent->angles, 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) { switch (contents) { case CONTENTS_EMPTY: case CONTENTS_SOLID: cl.cshifts[CSHIFT_CONTENTS] = cshift_empty; break; case CONTENTS_LAVA: cl.cshifts[CSHIFT_CONTENTS] = cshift_lava; break; 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.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.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.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.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; qboolean new; byte *basepal, *newpal; byte pal[768]; int r,g,b; qboolean 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); 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_BoundOffsets ============== */ void V_BoundOffsets (void) { entity_t *ent; ent = &cl_entities[cl.viewentity]; // absolutely bound refresh reletive to entity clipping hull // so the view can never be inside a solid wall if (r_refdef.vieworg[0] < ent->origin[0] - 14) r_refdef.vieworg[0] = ent->origin[0] - 14; else if (r_refdef.vieworg[0] > ent->origin[0] + 14) r_refdef.vieworg[0] = ent->origin[0] + 14; if (r_refdef.vieworg[1] < ent->origin[1] - 14) r_refdef.vieworg[1] = ent->origin[1] - 14; else if (r_refdef.vieworg[1] > ent->origin[1] + 14) r_refdef.vieworg[1] = ent->origin[1] + 14; if (r_refdef.vieworg[2] < ent->origin[2] - 22) r_refdef.vieworg[2] = ent->origin[2] - 22; else if (r_refdef.vieworg[2] > ent->origin[2] + 30) r_refdef.vieworg[2] = ent->origin[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; } /* ============== V_CalcViewRoll Roll is induced by movement and damage ============== */ void V_CalcViewRoll (void) { float side; side = V_CalcRoll (cl_entities[cl.viewentity].angles, cl.velocity); 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; } if (cl.stats[STAT_HEALTH] <= 0) { r_refdef.viewangles[ROLL] = 80; // dead view angle return; } } /* ================== V_CalcIntermissionRefdef ================== */ void V_CalcIntermissionRefdef (void) { entity_t *ent, *view; float old; // ent is the player model (visible when out of body) ent = &cl_entities[cl.viewentity]; // view is the weapon model (only visible from inside body) view = &cl.viewent; VectorCopy (ent->origin, r_refdef.vieworg); VectorCopy (ent->angles, r_refdef.viewangles); view->model = nil; // 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 *ent, *view; int i; vec3_t forward, right, up; vec3_t angles; float bob; static float oldz = 0; V_DriftPitch (); // ent is the player model (visible when out of body) ent = &cl_entities[cl.viewentity]; // view is the weapon model (only visible from inside body) view = &cl.viewent; // transform the view offset by the model's matrix to get the offset from // model origin for the view ent->angles[YAW] = cl.viewangles[YAW]; // the model should face // the view dir ent->angles[PITCH] = -cl.viewangles[PITCH]; // the model should face // the view dir bob = V_CalcBob (); // refresh position VectorCopy (ent->origin, r_refdef.vieworg); r_refdef.vieworg[2] += cl.viewheight + 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 1/16 pixel, so add 1/32 in each axis r_refdef.vieworg[0] += 1.0/32; r_refdef.vieworg[1] += 1.0/32; r_refdef.vieworg[2] += 1.0/32; VectorCopy (cl.viewangles, r_refdef.viewangles); V_CalcViewRoll (); V_AddIdle (); // offsets angles[PITCH] = -ent->angles[PITCH]; // because entity pitches are // actually backward angles[YAW] = ent->angles[YAW]; angles[ROLL] = ent->angles[ROLL]; AngleVectors (angles, forward, right, up); for (i=0 ; i<3 ; i++) r_refdef.vieworg[i] += scr_ofsx.value*forward[i] + scr_ofsy.value*right[i] + scr_ofsz.value*up[i]; V_BoundOffsets (); // set up gun position VectorCopy (cl.viewangles, view->angles); CalcGunAngle (); VectorCopy (ent->origin, view->origin); view->origin[2] += cl.viewheight; 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 (cl.model_precache[cl.stats[STAT_WEAPON]] && strcmp (cl.model_precache[cl.stats[STAT_WEAPON]]->name, "progs/v_shot2.mdl")) */ 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; view->model = cl.model_precache[cl.stats[STAT_WEAPON]]; view->frame = cl.stats[STAT_WEAPONFRAME]; view->colormap = vid.colormap; // set up the refresh position VectorAdd (r_refdef.viewangles, cl.punchangle, r_refdef.viewangles); // smooth out stair step ups if (cl.onground && ent->origin[2] - oldz > 0) { float steptime; steptime = cl.time - cl.oldtime; if (steptime < 0) //FIXME I_Error ("steptime < 0"); steptime = 0; oldz += steptime * 80; if (oldz > ent->origin[2]) oldz = ent->origin[2]; if (ent->origin[2] - oldz > 12) oldz = ent->origin[2] - 12; r_refdef.vieworg[2] += oldz - ent->origin[2]; view->origin[2] += oldz - ent->origin[2]; } else oldz = ent->origin[2]; if (chase_active.value) Chase_Update (); } /* ================== 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 (con_forcedup) return; // don't allow cheats in multiplayer if (cl.maxclients > 1) { Cvar_Set ("scr_ofsx", "0"); Cvar_Set ("scr_ofsy", "0"); Cvar_Set ("scr_ofsz", "0"); } if (cl.intermission) { // intermission / finale rendering V_CalcIntermissionRefdef (); } else { if (!cl.paused /* && (sv.maxclients > 1 || key_dest == key_game) */ ) V_CalcRefdef (); } R_PushDlights (); if (lcd_x.value) { // // render two interleaved views // int i; vid.rowbytes <<= 1; vid.aspect *= 0.5; r_refdef.viewangles[YAW] -= lcd_yaw.value; for (i=0 ; i<3 ; i++) r_refdef.vieworg[i] -= right[i]*lcd_x.value; R_RenderView (); vid.buffer += vid.rowbytes>>1; R_PushDlights (); r_refdef.viewangles[YAW] += lcd_yaw.value*2; for (i=0 ; i<3 ; i++) r_refdef.vieworg[i] += 2*right[i]*lcd_x.value; R_RenderView (); vid.buffer -= vid.rowbytes>>1; r_refdef.vrect.height <<= 1; vid.rowbytes >>= 1; vid.aspect *= 2; } else { R_RenderView (); } if (crosshair.value) Draw_Character (scr_vrect.x + scr_vrect.width/2 + cl_crossx.value, scr_vrect.y + scr_vrect.height/2 + cl_crossy.value, '+'); } //============================================================================ /* ============= 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 (&lcd_x); Cvar_RegisterVariable (&lcd_yaw); 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_idlescale); Cvar_RegisterVariable (&crosshair); Cvar_RegisterVariable (&cl_crossx); Cvar_RegisterVariable (&cl_crossy); Cvar_RegisterVariable (&gl_cshiftpercent); Cvar_RegisterVariable (&scr_ofsx); Cvar_RegisterVariable (&scr_ofsy); Cvar_RegisterVariable (&scr_ofsz); 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); }