cg_players.c

quakeIII源码这个不用我多说吧

				skin = "default";
			} else {
				*skin++ = 0;
			}

			Q_strncpyz( newInfo.skinName, skin, sizeof( newInfo.skinName ) );
			Q_strncpyz( newInfo.modelName, modelStr, sizeof( newInfo.modelName ) );
		}

		if ( cgs.gametype >= GT_TEAM ) {
			// keep skin name
			slash = strchr( v, '/' );
			if ( slash ) {
				Q_strncpyz( newInfo.skinName, slash + 1, sizeof( newInfo.skinName ) );
			}
		}
	} else {
		Q_strncpyz( newInfo.modelName, v, sizeof( newInfo.modelName ) );

		slash = strchr( newInfo.modelName, '/' );
		if ( !slash ) {
			// modelName didn not include a skin name
			Q_strncpyz( newInfo.skinName, "default", sizeof( newInfo.skinName ) );
		} else {
			Q_strncpyz( newInfo.skinName, slash + 1, sizeof( newInfo.skinName ) );
			// truncate modelName
			*slash = 0;
		}
	}

	// head model
	v = Info_ValueForKey( configstring, "hmodel" );
	if ( cg_forceModel.integer ) {
		// forcemodel makes everyone use a single model
		// to prevent load hitches
		char modelStr[MAX_QPATH];
		char *skin;

		if( cgs.gametype >= GT_TEAM ) {
			Q_strncpyz( newInfo.headModelName, DEFAULT_TEAM_MODEL, sizeof( newInfo.headModelName ) );
			Q_strncpyz( newInfo.headSkinName, "default", sizeof( newInfo.headSkinName ) );
		} else {
			trap_Cvar_VariableStringBuffer( "headmodel", modelStr, sizeof( modelStr ) );
			if ( ( skin = strchr( modelStr, '/' ) ) == NULL) {
				skin = "default";
			} else {
				*skin++ = 0;
			}

			Q_strncpyz( newInfo.headSkinName, skin, sizeof( newInfo.headSkinName ) );
			Q_strncpyz( newInfo.headModelName, modelStr, sizeof( newInfo.headModelName ) );
		}

		if ( cgs.gametype >= GT_TEAM ) {
			// keep skin name
			slash = strchr( v, '/' );
			if ( slash ) {
				Q_strncpyz( newInfo.headSkinName, slash + 1, sizeof( newInfo.headSkinName ) );
			}
		}
	} else {
		Q_strncpyz( newInfo.headModelName, v, sizeof( newInfo.headModelName ) );

		slash = strchr( newInfo.headModelName, '/' );
		if ( !slash ) {
			// modelName didn not include a skin name
			Q_strncpyz( newInfo.headSkinName, "default", sizeof( newInfo.headSkinName ) );
		} else {
			Q_strncpyz( newInfo.headSkinName, slash + 1, sizeof( newInfo.headSkinName ) );
			// truncate modelName
			*slash = 0;
		}
	}

	// scan for an existing clientinfo that matches this modelname
	// so we can avoid loading checks if possible
	if ( !CG_ScanForExistingClientInfo( &newInfo ) ) {
		qboolean	forceDefer;

		forceDefer = trap_MemoryRemaining() < 4000000;

		// if we are defering loads, just have it pick the first valid
		if ( forceDefer || (cg_deferPlayers.integer && !cg_buildScript.integer && !cg.loading ) ) {
			// keep whatever they had if it won't violate team skins
			CG_SetDeferredClientInfo( &newInfo );
			// if we are low on memory, leave them with this model
			if ( forceDefer ) {
				CG_Printf( "Memory is low.  Using deferred model.\n" );
				newInfo.deferred = qfalse;
			}
		} else {
			CG_LoadClientInfo( &newInfo );
		}
	}

	// replace whatever was there with the new one
	newInfo.infoValid = qtrue;
	*ci = newInfo;
}



/*
======================
CG_LoadDeferredPlayers

Called each frame when a player is dead
and the scoreboard is up
so deferred players can be loaded
======================
*/
void CG_LoadDeferredPlayers( void ) {
	int		i;
	clientInfo_t	*ci;

	// scan for a deferred player to load
	for ( i = 0, ci = cgs.clientinfo ; i < cgs.maxclients ; i++, ci++ ) {
		if ( ci->infoValid && ci->deferred ) {
			// if we are low on memory, leave it deferred
			if ( trap_MemoryRemaining() < 4000000 ) {
				CG_Printf( "Memory is low.  Using deferred model.\n" );
				ci->deferred = qfalse;
				continue;
			}
			CG_LoadClientInfo( ci );
//			break;
		}
	}
}

/*
=============================================================================

PLAYER ANIMATION

=============================================================================
*/


/*
===============
CG_SetLerpFrameAnimation

may include ANIM_TOGGLEBIT
===============
*/
static void CG_SetLerpFrameAnimation( clientInfo_t *ci, lerpFrame_t *lf, int newAnimation ) {
	animation_t	*anim;

	lf->animationNumber = newAnimation;
	newAnimation &= ~ANIM_TOGGLEBIT;

	if ( newAnimation < 0 || newAnimation >= MAX_TOTALANIMATIONS ) {
		CG_Error( "Bad animation number: %i", newAnimation );
	}

	anim = &ci->animations[ newAnimation ];

	lf->animation = anim;
	lf->animationTime = lf->frameTime + anim->initialLerp;

	if ( cg_debugAnim.integer ) {
		CG_Printf( "Anim: %i\n", newAnimation );
	}
}

/*
===============
CG_RunLerpFrame

Sets cg.snap, cg.oldFrame, and cg.backlerp
cg.time should be between oldFrameTime and frameTime after exit
===============
*/
static void CG_RunLerpFrame( clientInfo_t *ci, lerpFrame_t *lf, int newAnimation, float speedScale ) {
	int			f, numFrames;
	animation_t	*anim;

	// debugging tool to get no animations
	if ( cg_animSpeed.integer == 0 ) {
		lf->oldFrame = lf->frame = lf->backlerp = 0;
		return;
	}

	// see if the animation sequence is switching
	if ( newAnimation != lf->animationNumber || !lf->animation ) {
		CG_SetLerpFrameAnimation( ci, lf, newAnimation );
	}

	// if we have passed the current frame, move it to
	// oldFrame and calculate a new frame
	if ( cg.time >= lf->frameTime ) {
		lf->oldFrame = lf->frame;
		lf->oldFrameTime = lf->frameTime;

		// get the next frame based on the animation
		anim = lf->animation;
		if ( !anim->frameLerp ) {
			return;		// shouldn't happen
		}
		if ( cg.time < lf->animationTime ) {
			lf->frameTime = lf->animationTime;		// initial lerp
		} else {
			lf->frameTime = lf->oldFrameTime + anim->frameLerp;
		}
		f = ( lf->frameTime - lf->animationTime ) / anim->frameLerp;
		f *= speedScale;		// adjust for haste, etc

		numFrames = anim->numFrames;
		if (anim->flipflop) {
			numFrames *= 2;
		}
		if ( f >= numFrames ) {
			f -= numFrames;
			if ( anim->loopFrames ) {
				f %= anim->loopFrames;
				f += anim->numFrames - anim->loopFrames;
			} else {
				f = numFrames - 1;
				// the animation is stuck at the end, so it
				// can immediately transition to another sequence
				lf->frameTime = cg.time;
			}
		}
		if ( anim->reversed ) {
			lf->frame = anim->firstFrame + anim->numFrames - 1 - f;
		}
		else if (anim->flipflop && f>=anim->numFrames) {
			lf->frame = anim->firstFrame + anim->numFrames - 1 - (f%anim->numFrames);
		}
		else {
			lf->frame = anim->firstFrame + f;
		}
		if ( cg.time > lf->frameTime ) {
			lf->frameTime = cg.time;
			if ( cg_debugAnim.integer ) {
				CG_Printf( "Clamp lf->frameTime\n");
			}
		}
	}

	if ( lf->frameTime > cg.time + 200 ) {
		lf->frameTime = cg.time;
	}

	if ( lf->oldFrameTime > cg.time ) {
		lf->oldFrameTime = cg.time;
	}
	// calculate current lerp value
	if ( lf->frameTime == lf->oldFrameTime ) {
		lf->backlerp = 0;
	} else {
		lf->backlerp = 1.0 - (float)( cg.time - lf->oldFrameTime ) / ( lf->frameTime - lf->oldFrameTime );
	}
}


/*
===============
CG_ClearLerpFrame
===============
*/
static void CG_ClearLerpFrame( clientInfo_t *ci, lerpFrame_t *lf, int animationNumber ) {
	lf->frameTime = lf->oldFrameTime = cg.time;
	CG_SetLerpFrameAnimation( ci, lf, animationNumber );
	lf->oldFrame = lf->frame = lf->animation->firstFrame;
}


/*
===============
CG_PlayerAnimation
===============
*/
static void CG_PlayerAnimation( centity_t *cent, int *legsOld, int *legs, float *legsBackLerp,
						int *torsoOld, int *torso, float *torsoBackLerp ) {
	clientInfo_t	*ci;
	int				clientNum;
	float			speedScale;

	clientNum = cent->currentState.clientNum;

	if ( cg_noPlayerAnims.integer ) {
		*legsOld = *legs = *torsoOld = *torso = 0;
		return;
	}

	if ( cent->currentState.powerups & ( 1 << PW_HASTE ) ) {
		speedScale = 1.5;
	} else {
		speedScale = 1;
	}

	ci = &cgs.clientinfo[ clientNum ];

	// do the shuffle turn frames locally
	if ( cent->pe.legs.yawing && ( cent->currentState.legsAnim & ~ANIM_TOGGLEBIT ) == LEGS_IDLE ) {
		CG_RunLerpFrame( ci, &cent->pe.legs, LEGS_TURN, speedScale );
	} else {
		CG_RunLerpFrame( ci, &cent->pe.legs, cent->currentState.legsAnim, speedScale );
	}

	*legsOld = cent->pe.legs.oldFrame;
	*legs = cent->pe.legs.frame;
	*legsBackLerp = cent->pe.legs.backlerp;

	CG_RunLerpFrame( ci, &cent->pe.torso, cent->currentState.torsoAnim, speedScale );

	*torsoOld = cent->pe.torso.oldFrame;
	*torso = cent->pe.torso.frame;
	*torsoBackLerp = cent->pe.torso.backlerp;
}

/*
=============================================================================

PLAYER ANGLES

=============================================================================
*/

/*
==================
CG_SwingAngles
==================
*/
static void CG_SwingAngles( float destination, float swingTolerance, float clampTolerance,
					float speed, float *angle, qboolean *swinging ) {
	float	swing;
	float	move;
	float	scale;

	if ( !*swinging ) {
		// see if a swing should be started
		swing = AngleSubtract( *angle, destination );
		if ( swing > swingTolerance || swing < -swingTolerance ) {
			*swinging = qtrue;
		}
	}

	if ( !*swinging ) {
		return;
	}
	
	// modify the speed depending on the delta
	// so it doesn't seem so linear
	swing = AngleSubtract( destination, *angle );
	scale = fabs( swing );
	if ( scale < swingTolerance * 0.5 ) {
		scale = 0.5;
	} else if ( scale < swingTolerance ) {
		scale = 1.0;
	} else {
		scale = 2.0;
	}

	// swing towards the destination angle
	if ( swing >= 0 ) {
		move = cg.frametime * scale * speed;
		if ( move >= swing ) {
			move = swing;
			*swinging = qfalse;
		}
		*angle = AngleMod( *angle + move );
	} else if ( swing < 0 ) {
		move = cg.frametime * scale * -speed;
		if ( move <= swing ) {
			move = swing;
			*swinging = qfalse;
		}
		*angle = AngleMod( *angle + move );
	}

	// clamp to no more than tolerance
	swing = AngleSubtract( destination, *angle );
	if ( swing > clampTolerance ) {
		*angle = AngleMod( destination - (clampTolerance - 1) );
	} else if ( swing < -clampTolerance ) {
		*angle = AngleMod( destination + (clampTolerance - 1) );
	}
}

/*
=================
CG_AddPainTwitch
=================
*/
static void CG_AddPainTwitch( centity_t *cent, vec3_t torsoAngles ) {
	int		t;
	float	f;

	t = cg.time - cent->pe.painTime;
	if ( t >= PAIN_TWITCH_TIME ) {
		return;
	}

	f = 1.0 - (float)t / PAIN_TWITCH_TIME;

	if ( cent->pe.painDirection ) {
		torsoAngles[ROLL] += 20 * f;
	} else {
		torsoAngles[ROLL] -= 20 * f;
	}
}


/*
===============
CG_PlayerAngles

Handles seperate torso motion

  legs pivot based on direction of movement

  head always looks exactly at cent->lerpAngles

  if motion < 20 degrees, show in head only
  if < 45 degrees, also show in torso
===============
*/
static void CG_PlayerAngles( centity_t *cent, vec3_t legs[3], vec3_t torso[3], vec3_t head[3] ) {
	vec3_t		legsAngles, torsoAngles, headAngles;
	float		dest;
	static	int	movementOffsets[8] = { 0, 22, 45, -22, 0, 22, -45, -22 };
	vec3_t		velocity;
	float		speed;
	int			dir, clientNum;
	clientInfo_t	*ci;

	VectorCopy( cent->lerpAngles, headAngles );
	headAngles[YAW] = AngleMod( headAngles[YAW] );
	VectorClear( legsAngles );
	VectorClear( torsoAngles );

	// --------- yaw -------------

	// allow yaw to drift a bit
	if ( ( cent->currentState.legsAnim & ~ANIM_TOGGLEBIT ) != LEGS_IDLE 
		|| ( cent->currentState.torsoAnim & ~ANIM_TOGGLEBIT ) != TORSO_STAND  ) {
		// if not standing still, always point all in the same direction
		cent->pe.torso.yawing = qtrue;	// always center
		cent->pe.torso.pitching = qtrue;	// always center
		cent->pe.legs.yawing = qtrue;	// always center
	}

	// adjust legs for movement dir
	if ( cent->currentState.eFlags & EF_DEAD ) {
		// don't let dead bodies twitch
		dir = 0;
	} else {
		dir = cent->currentState.angles2[YAW];
		if ( dir < 0 || dir > 7 ) {
			CG_Error( "Bad player movement angle" );
		}
	}
	legsAngles[YAW] = headAngles[YAW] + movementOffsets[ dir ];
	torsoAngles[YAW] = headAngles[YAW] + 0.25 * movementOffsets[ dir ];

	// torso
	CG_SwingAngles( torsoAngles[YAW], 25, 90, cg_swingSpeed.value, &cent->pe.torso.yawAngle, &cent->pe.torso.yawing );
	CG_SwingAngles( legsAngles[YAW], 40, 90, cg_swingSpeed.value, &cent->pe.legs.yawAngle, &cent->pe.legs.yawing );

	torsoAngles[YAW] = cent->pe.torso.yawAngle;
	legsAngles[YAW] = cent->pe.legs.yawAngle;


	// --------- pitch -------------

	// only show a fraction of the pitch angle in the torso
	if ( headAngles[PITCH] > 180 ) {
		dest = (-360 + headAngles[PITCH]) * 0.75f;
	} else {
		dest = headAngles[PITCH] * 0.75f;
	}
	CG_SwingAngles( dest, 15, 30, 0.1f, &cent->pe.torso.pitchAngle, &cent->pe.torso.pitching );
	torsoAngles[PITCH] = cent->pe.torso.pitchAngle;