cg_weapons.c

quakeIII源码这个不用我多说吧

==============
*/
void CG_AddViewWeapon( playerState_t *ps ) {
	refEntity_t	hand;
	centity_t	*cent;
	clientInfo_t	*ci;
	float		fovOffset;
	vec3_t		angles;
	weaponInfo_t	*weapon;

	if ( ps->persistant[PERS_TEAM] == TEAM_SPECTATOR ) {
		return;
	}

	if ( ps->pm_type == PM_INTERMISSION ) {
		return;
	}

	// no gun if in third person view or a camera is active
	//if ( cg.renderingThirdPerson || cg.cameraMode) {
	if ( cg.renderingThirdPerson ) {
		return;
	}


	// allow the gun to be completely removed
	if ( !cg_drawGun.integer ) {
		vec3_t		origin;

		if ( cg.predictedPlayerState.eFlags & EF_FIRING ) {
			// special hack for lightning gun...
			VectorCopy( cg.refdef.vieworg, origin );
			VectorMA( origin, -8, cg.refdef.viewaxis[2], origin );
			CG_LightningBolt( &cg_entities[ps->clientNum], origin );
		}
		return;
	}

	// don't draw if testing a gun model
	if ( cg.testGun ) {
		return;
	}

	// drop gun lower at higher fov
	if ( cg_fov.integer > 90 ) {
		fovOffset = -0.2 * ( cg_fov.integer - 90 );
	} else {
		fovOffset = 0;
	}

	cent = &cg.predictedPlayerEntity;	// &cg_entities[cg.snap->ps.clientNum];
	CG_RegisterWeapon( ps->weapon );
	weapon = &cg_weapons[ ps->weapon ];

	memset (&hand, 0, sizeof(hand));

	// set up gun position
	CG_CalculateWeaponPosition( hand.origin, angles );

	VectorMA( hand.origin, cg_gun_x.value, cg.refdef.viewaxis[0], hand.origin );
	VectorMA( hand.origin, cg_gun_y.value, cg.refdef.viewaxis[1], hand.origin );
	VectorMA( hand.origin, (cg_gun_z.value+fovOffset), cg.refdef.viewaxis[2], hand.origin );

	AnglesToAxis( angles, hand.axis );

	// map torso animations to weapon animations
	if ( cg_gun_frame.integer ) {
		// development tool
		hand.frame = hand.oldframe = cg_gun_frame.integer;
		hand.backlerp = 0;
	} else {
		// get clientinfo for animation map
		ci = &cgs.clientinfo[ cent->currentState.clientNum ];
		hand.frame = CG_MapTorsoToWeaponFrame( ci, cent->pe.torso.frame );
		hand.oldframe = CG_MapTorsoToWeaponFrame( ci, cent->pe.torso.oldFrame );
		hand.backlerp = cent->pe.torso.backlerp;
	}

	hand.hModel = weapon->handsModel;
	hand.renderfx = RF_DEPTHHACK | RF_FIRST_PERSON | RF_MINLIGHT;

	// add everything onto the hand
	CG_AddPlayerWeapon( &hand, ps, &cg.predictedPlayerEntity, ps->persistant[PERS_TEAM] );
}

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

WEAPON SELECTION

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

/*
===================
CG_DrawWeaponSelect
===================
*/
void CG_DrawWeaponSelect( void ) {
	int		i;
	int		bits;
	int		count;
	int		x, y, w;
	char	*name;
	float	*color;

	// don't display if dead
	if ( cg.predictedPlayerState.stats[STAT_HEALTH] <= 0 ) {
		return;
	}

	color = CG_FadeColor( cg.weaponSelectTime, WEAPON_SELECT_TIME );
	if ( !color ) {
		return;
	}
	trap_R_SetColor( color );

	// showing weapon select clears pickup item display, but not the blend blob
	cg.itemPickupTime = 0;

	// count the number of weapons owned
	bits = cg.snap->ps.stats[ STAT_WEAPONS ];
	count = 0;
	for ( i = 1 ; i < 16 ; i++ ) {
		if ( bits & ( 1 << i ) ) {
			count++;
		}
	}

	x = 320 - count * 20;
	y = 380;

	for ( i = 1 ; i < 16 ; i++ ) {
		if ( !( bits & ( 1 << i ) ) ) {
			continue;
		}

		CG_RegisterWeapon( i );

		// draw weapon icon
		CG_DrawPic( x, y, 32, 32, cg_weapons[i].weaponIcon );

		// draw selection marker
		if ( i == cg.weaponSelect ) {
			CG_DrawPic( x-4, y-4, 40, 40, cgs.media.selectShader );
		}

		// no ammo cross on top
		if ( !cg.snap->ps.ammo[ i ] ) {
			CG_DrawPic( x, y, 32, 32, cgs.media.noammoShader );
		}

		x += 40;
	}

	// draw the selected name
	if ( cg_weapons[ cg.weaponSelect ].item ) {
		name = cg_weapons[ cg.weaponSelect ].item->pickup_name;
		if ( name ) {
			w = CG_DrawStrlen( name ) * BIGCHAR_WIDTH;
			x = ( SCREEN_WIDTH - w ) / 2;
			CG_DrawBigStringColor(x, y - 22, name, color);
		}
	}

	trap_R_SetColor( NULL );
}


/*
===============
CG_WeaponSelectable
===============
*/
static qboolean CG_WeaponSelectable( int i ) {
	if ( !cg.snap->ps.ammo[i] ) {
		return qfalse;
	}
	if ( ! (cg.snap->ps.stats[ STAT_WEAPONS ] & ( 1 << i ) ) ) {
		return qfalse;
	}

	return qtrue;
}

/*
===============
CG_NextWeapon_f
===============
*/
void CG_NextWeapon_f( void ) {
	int		i;
	int		original;

	if ( !cg.snap ) {
		return;
	}
	if ( cg.snap->ps.pm_flags & PMF_FOLLOW ) {
		return;
	}

	cg.weaponSelectTime = cg.time;
	original = cg.weaponSelect;

	for ( i = 0 ; i < 16 ; i++ ) {
		cg.weaponSelect++;
		if ( cg.weaponSelect == 16 ) {
			cg.weaponSelect = 0;
		}
		if ( cg.weaponSelect == WP_GAUNTLET ) {
			continue;		// never cycle to gauntlet
		}
		if ( CG_WeaponSelectable( cg.weaponSelect ) ) {
			break;
		}
	}
	if ( i == 16 ) {
		cg.weaponSelect = original;
	}
}

/*
===============
CG_PrevWeapon_f
===============
*/
void CG_PrevWeapon_f( void ) {
	int		i;
	int		original;

	if ( !cg.snap ) {
		return;
	}
	if ( cg.snap->ps.pm_flags & PMF_FOLLOW ) {
		return;
	}

	cg.weaponSelectTime = cg.time;
	original = cg.weaponSelect;

	for ( i = 0 ; i < 16 ; i++ ) {
		cg.weaponSelect--;
		if ( cg.weaponSelect == -1 ) {
			cg.weaponSelect = 15;
		}
		if ( cg.weaponSelect == WP_GAUNTLET ) {
			continue;		// never cycle to gauntlet
		}
		if ( CG_WeaponSelectable( cg.weaponSelect ) ) {
			break;
		}
	}
	if ( i == 16 ) {
		cg.weaponSelect = original;
	}
}

/*
===============
CG_Weapon_f
===============
*/
void CG_Weapon_f( void ) {
	int		num;

	if ( !cg.snap ) {
		return;
	}
	if ( cg.snap->ps.pm_flags & PMF_FOLLOW ) {
		return;
	}

	num = atoi( CG_Argv( 1 ) );

	if ( num < 1 || num > 15 ) {
		return;
	}

	cg.weaponSelectTime = cg.time;

	if ( ! ( cg.snap->ps.stats[STAT_WEAPONS] & ( 1 << num ) ) ) {
		return;		// don't have the weapon
	}

	cg.weaponSelect = num;
}

/*
===================
CG_OutOfAmmoChange

The current weapon has just run out of ammo
===================
*/
void CG_OutOfAmmoChange( void ) {
	int		i;

	cg.weaponSelectTime = cg.time;

	for ( i = 15 ; i > 0 ; i-- ) {
		if ( CG_WeaponSelectable( i ) ) {
			cg.weaponSelect = i;
			break;
		}
	}
}



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

WEAPON EVENTS

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

/*
================
CG_FireWeapon

Caused by an EV_FIRE_WEAPON event
================
*/
void CG_FireWeapon( centity_t *cent ) {
	entityState_t *ent;
	int				c;
	weaponInfo_t	*weap;

	ent = &cent->currentState;
	if ( ent->weapon == WP_NONE ) {
		return;
	}
	if ( ent->weapon >= WP_NUM_WEAPONS ) {
		CG_Error( "CG_FireWeapon: ent->weapon >= WP_NUM_WEAPONS" );
		return;
	}
	weap = &cg_weapons[ ent->weapon ];

	// mark the entity as muzzle flashing, so when it is added it will
	// append the flash to the weapon model
	cent->muzzleFlashTime = cg.time;

	// lightning gun only does this this on initial press
	if ( ent->weapon == WP_LIGHTNING ) {
		if ( cent->pe.lightningFiring ) {
			return;
		}
	}

	// play quad sound if needed
	if ( cent->currentState.powerups & ( 1 << PW_QUAD ) ) {
		trap_S_StartSound (NULL, cent->currentState.number, CHAN_ITEM, cgs.media.quadSound );
	}

	// play a sound
	for ( c = 0 ; c < 4 ; c++ ) {
		if ( !weap->flashSound[c] ) {
			break;
		}
	}
	if ( c > 0 ) {
		c = rand() % c;
		if ( weap->flashSound[c] )
		{
			trap_S_StartSound( NULL, ent->number, CHAN_WEAPON, weap->flashSound[c] );
		}
	}

	// do brass ejection
	if ( weap->ejectBrassFunc && cg_brassTime.integer > 0 ) {
		weap->ejectBrassFunc( cent );
	}
}


/*
=================
CG_MissileHitWall

Caused by an EV_MISSILE_MISS event, or directly by local bullet tracing
=================
*/
void CG_MissileHitWall( int weapon, int clientNum, vec3_t origin, vec3_t dir, impactSound_t soundType ) {
	qhandle_t		mod;
	qhandle_t		mark;
	qhandle_t		shader;
	sfxHandle_t		sfx;
	float			radius;
	float			light;
	vec3_t			lightColor;
	localEntity_t	*le;
	int				r;
	qboolean		alphaFade;
	qboolean		isSprite;
	int				duration;
	vec3_t			sprOrg;
	vec3_t			sprVel;

	mark = 0;
	radius = 32;
	sfx = 0;
	mod = 0;
	shader = 0;
	light = 0;
	lightColor[0] = 1;
	lightColor[1] = 1;
	lightColor[2] = 0;

	// set defaults
	isSprite = qfalse;
	duration = 600;

	switch ( weapon ) {
	default:
#ifdef MISSIONPACK
	case WP_NAILGUN:
		if( soundType == IMPACTSOUND_FLESH ) {
			sfx = cgs.media.sfx_nghitflesh;
		} else if( soundType == IMPACTSOUND_METAL ) {
			sfx = cgs.media.sfx_nghitmetal;
		} else {
			sfx = cgs.media.sfx_nghit;
		}
		mark = cgs.media.holeMarkShader;
		radius = 12;
		break;
#endif
	case WP_LIGHTNING:
		// no explosion at LG impact, it is added with the beam
		r = rand() & 3;
		if ( r < 2 ) {
			sfx = cgs.media.sfx_lghit2;
		} else if ( r == 2 ) {
			sfx = cgs.media.sfx_lghit1;
		} else {
			sfx = cgs.media.sfx_lghit3;
		}
		mark = cgs.media.holeMarkShader;
		radius = 12;
		break;
#ifdef MISSIONPACK
	case WP_PROX_LAUNCHER:
		mod = cgs.media.dishFlashModel;
		shader = cgs.media.grenadeExplosionShader;
		sfx = cgs.media.sfx_proxexp;
		mark = cgs.media.burnMarkShader;
		radius = 64;
		light = 300;
		isSprite = qtrue;
		break;
#endif
	case WP_GRENADE_LAUNCHER:
		mod = cgs.media.dishFlashModel;
		shader = cgs.media.grenadeExplosionShader;
		sfx = cgs.media.sfx_rockexp;