// protocol.h -- communications protocols

#define	OLD_PROTOCOL_VERSION	24
#define	PROTOCOL_VERSION	25

//=========================================

#define	PORT_CLIENT	26901 //27001
#define	PORT_MASTER	26900 //27000
#define	PORT_SERVER	26950 //27500

//=========================================

// out of band message id bytes

// M = master, S = server, C = client, A = any
// the second character will allways be \n if the message isn't a single
// byte long (?? not true anymore?)

#define A2S_ECHO			'g' // echo back a message

#define	S2C_CONNECTION		'j'
#define	A2A_PING			'k'	// respond with an A2A_ACK
#define	A2A_ACK				'l'	// general acknowledgement without info
#define	A2A_NACK			'm'	// [+ comment] general failure
#define	A2C_PRINT			'n'	// print a message on client

#define	S2M_HEARTBEAT		'a'	// + serverinfo + userlist + fraglist
#define	A2C_CLIENT_COMMAND	'B'	// + command line
#define	S2M_SHUTDOWN		'C'


//==================
// note that there are some defs.qc that mirror to these numbers
// also related to svc_strings[] in cl_parse
//==================

//
// server to client
//
#define	svc_bad				0
#define	svc_nop				1
#define	svc_disconnect		2
#define	svc_updatestat		3	// [byte] [byte]
//define	svc_version			4	// [long] server version
#define	svc_setview			5	// [short] entity number
#define	svc_sound			6	// <see code>
#define	svc_time			7	// [float] server time
#define	svc_print			8	// [byte] id [string] null terminated string
#define	svc_stufftext		9	// [string] stuffed into client's console buffer
								// the string should be \n terminated
#define	svc_setangle		10	// [angle3] set the view angle to this absolute value
	
#define	svc_serverdata		11	// [long] protocol ...
#define	svc_lightstyle		12	// [byte] [string]
//define	svc_updatename		13	// [byte] [string]
#define	svc_updatefrags		14	// [byte] [short]
//define	svc_clientdata		15	// <shortbits + data>
#define	svc_stopsound		16	// <see code>
//define	svc_updatecolors	17	// [byte] [byte] [byte]
#define	svc_particle		18	// [vec3] <variable>
#define	svc_damage			19
	
#define	svc_spawnstatic		20
//	svc_spawnbinary		21
#define	svc_spawnbaseline	22
	
#define	svc_temp_entity		23	// variable
//	svc_setpause		24	// [byte] on / off
//	svc_signonnum		25	// [byte]  used for the signon sequence

#define	svc_centerprint		26	// [string] to put in center of the screen

#define	svc_killedmonster	27
#define	svc_foundsecret		28

#define	svc_spawnstaticsound	29	// [coord3] [byte] samp [byte] vol [byte] aten

#define	svc_intermission	30		// [vec3_t] origin [vec3_t] angle
#define	svc_finale			31		// [string] text

#define	svc_cdtrack			32		// [byte] track
#define svc_sellscreen		33

#define	svc_smallkick		34		// set client punchangle to 2
#define	svc_bigkick			35		// set client punchangle to 4

#define	svc_updateping		36		// [byte] [short]
#define	svc_updateentertime	37		// [byte] [float]

#define	svc_updatestatlong	38		// [byte] [long]

#define	svc_muzzleflash		39		// [short] entity

#define	svc_updateuserinfo	40		// [byte] slot [long] uid
									// [string] userinfo

#define	svc_download		41		// [short] size [size bytes]
#define	svc_playerinfo		42		// variable
#define	svc_nails			43		// [byte] num [48 bits] xyzpy 12 12 12 4 8 
#define	svc_chokecount		44		// [byte] packets choked
#define	svc_modellist		45		// [strings]
#define	svc_soundlist		46		// [strings]
#define	svc_packetentities	47		// [...]
#define	svc_deltapacketentities	48		// [...]
#define svc_maxspeed		49		// maxspeed change, for prediction
#define svc_entgravity		50		// gravity change, for prediction

// Hexen2 specifics
#define svc_plaque					51
#define svc_particle_explosion		52
#define svc_set_view_tint			53
#define svc_start_effect			54
#define svc_end_effect				55
#define svc_set_view_flags			56
#define svc_clear_view_flags		57
#define svc_update_inv				58
#define	svc_particle2				59
#define	svc_particle3				60	
#define	svc_particle4				61	
#define svc_turn_effect				62
#define svc_update_effect			63
#define svc_multieffect				64
#define svc_midi_name				65
#define	svc_raineffect				66

#define svc_packmissile				67	//[byte] num [40 bits] xyz type 12 12 12 4

#define svc_indexed_print			68 //same as svc_print, but sends an index in strings.txt instead of string

#define svc_targetupdate			69 // [byte] angle [byte] pitch [byte] dist/4 - Hey, I got number 69!  Woo hoo!

#define svc_name_print				70 // print player's name
#define svc_sound_update_pos		71	//[short] ent+channel [coord3] pos
#define svc_update_piv				72	// update players in view
#define svc_player_sound			73  // sends weapon sound for invisible player
#define	svc_updatepclass			74	// [byte] [byte]
#define	svc_updatedminfo			75	// [byte] [short] [byte]
#define	svc_updatesiegeinfo			76	// [byte] [byte]
#define	svc_updatesiegeteam			77	// [byte] [byte]
#define svc_updatesiegelosses		78  // [byte] [byte]

#define svc_haskey					79  // [byte] [byte]
#define svc_nonehaskey				80  // [byte] [byte]
#define svc_isdoc					81  // [byte] [byte]
#define svc_nodoc					82  // [byte] [byte]
#define svc_playerskipped			83	// [byte]

//==============================================

//
// client to server
//
#define	clc_bad			0
#define	clc_nop 		1
//define	clc_doublemove	2
#define	clc_move		3		// [[usercmd_t]
#define	clc_stringcmd	4		// [string] message
#define	clc_delta		5		// [byte] sequence number, requests delta compression of message
#define clc_tmove		6		// teleport request, spectator only
#define clc_inv_select  7
#define clc_get_effect  8		//[byte] effect id

//==============================================

// playerinfo flags from server
// playerinfo allways sends: playernum, flags, origin[] and framenumber

#define	PF_MSEC			(1<<0)
#define	PF_COMMAND		(1<<1)
#define	PF_VELOCITY1	(1<<2)
#define	PF_VELOCITY2	(1<<3)
#define	PF_VELOCITY3	(1<<4)
#define	PF_MODEL		(1<<5)
#define	PF_SKINNUM		(1<<6)
#define	PF_EFFECTS		(1<<7)
#define	PF_WEAPONFRAME	(1<<8)		// only sent for view player
#define	PF_DEAD			(1<<9)		// don't block movement any more
#define	PF_CROUCH		(1<<10)		// offset the view height differently
//#define	PF_NOGRAV		(1<<11)		// don't apply gravity for prediction
#define	PF_EFFECTS2		(1<<11)		// player has high byte of effects set...
#define PF_DRAWFLAGS	(1<<12)
#define PF_SCALE		(1<<13)
#define PF_ABSLIGHT		(1<<14)
#define PF_SOUND		(1<<15)		//play a sound in the weapon channel

//==============================================

// if the high bit of the client to server byte is set, the low bits are
// client move cmd bits
// ms and angle2 are allways sent, the others are optional
#define	CM_ANGLE1 	(1<<0)
#define	CM_ANGLE3 	(1<<1)
#define	CM_FORWARD	(1<<2)
#define	CM_SIDE		(1<<3)
#define	CM_UP		(1<<4)
#define	CM_BUTTONS	(1<<5)
#define	CM_IMPULSE	(1<<6)
#define CM_MSEC		(1<<7)

//==============================================

// the first 16 bits of a packetentities update holds 9 bits
// of entity number and 7 bits of flags
#define	U_ORIGIN1	(1<<9)
#define	U_ORIGIN2	(1<<10)
#define	U_ORIGIN3	(1<<11)
#define	U_ANGLE2	(1<<12)
#define	U_FRAME		(1<<13)
#define	U_REMOVE	(1<<14)		// REMOVE this entity, don't add it
#define	U_MOREBITS	(1<<15)

// if MOREBITS is set, these additional flags are read in next
#define	U_ANGLE1	(1<<0)
#define	U_ANGLE3	(1<<1)
#define	U_SCALE		(1<<2)	
#define	U_COLORMAP	(1<<3)
#define	U_SKIN		(1<<4)
#define	U_EFFECTS	(1<<5)
#define	U_MODEL16	(1<<6)		
#define U_MOREBITS2 (1<<7)	

//if MOREBITS2 is set, then send the 3rd byte

#define	U_MODEL		(1<<16)
#define U_SOUND		(1<<17)
#define U_DRAWFLAGS (1<<18)
#define U_ABSLIGHT  (1<<19)


//==============================================

// Bits to help send server info about the client's edict variables
#define SC1_HEALTH				(1<<0)		// changes stat bar
#define SC1_LEVEL				(1<<1)		// changes stat bar
#define SC1_INTELLIGENCE		(1<<2)		// changes stat bar
#define SC1_WISDOM				(1<<3)		// changes stat bar
#define SC1_STRENGTH			(1<<4)		// changes stat bar
#define SC1_DEXTERITY			(1<<5)		// changes stat bar
//#define SC1_WEAPON				(1<<6)		// changes stat bar
#define SC1_TELEPORT_TIME		(1<<6)		// can't airmove for 2 seconds
#define SC1_BLUEMANA			(1<<7)		// changes stat bar
#define SC1_GREENMANA			(1<<8)		// changes stat bar
#define SC1_EXPERIENCE			(1<<9)		// changes stat bar
#define SC1_CNT_TORCH			(1<<10)		// changes stat bar
#define SC1_CNT_H_BOOST			(1<<11)		// changes stat bar
#define SC1_CNT_SH_BOOST		(1<<12)		// changes stat bar
#define SC1_CNT_MANA_BOOST		(1<<13)		// changes stat bar
#define SC1_CNT_TELEPORT		(1<<14)		// changes stat bar
#define SC1_CNT_TOME			(1<<15)		// changes stat bar
#define SC1_CNT_SUMMON			(1<<16)		// changes stat bar
#define SC1_CNT_INVISIBILITY	(1<<17)		// changes stat bar
#define SC1_CNT_GLYPH			(1<<18)		// changes stat bar
#define SC1_CNT_HASTE			(1<<19)		// changes stat bar
#define SC1_CNT_BLAST			(1<<20)		// changes stat bar
#define SC1_CNT_POLYMORPH		(1<<21)		// changes stat bar
#define SC1_CNT_FLIGHT			(1<<22)		// changes stat bar
#define SC1_CNT_CUBEOFFORCE		(1<<23)		// changes stat bar
#define SC1_CNT_INVINCIBILITY	(1<<24)		// changes stat bar
#define SC1_ARTIFACT_ACTIVE		(1<<25)
#define SC1_ARTIFACT_LOW		(1<<26)
#define SC1_MOVETYPE			(1<<27)
#define SC1_CAMERAMODE			(1<<28)
#define SC1_HASTED				(1<<29)
#define SC1_INVENTORY			(1<<30)
#define SC1_RINGS_ACTIVE		(1<<31)

#define SC2_RINGS_LOW			(1<<0)
#define SC2_AMULET				(1<<1)
#define SC2_BRACER				(1<<2)
#define SC2_BREASTPLATE			(1<<3)
#define SC2_HELMET				(1<<4)
#define SC2_FLIGHT_T			(1<<5)
#define SC2_WATER_T				(1<<6)
#define SC2_TURNING_T			(1<<7)
#define SC2_REGEN_T				(1<<8)
#define SC2_HASTE_T				(1<<9)
#define SC2_TOME_T				(1<<10)
#define SC2_PUZZLE1				(1<<11)
#define SC2_PUZZLE2				(1<<12)
#define SC2_PUZZLE3				(1<<13)
#define SC2_PUZZLE4				(1<<14)
#define SC2_PUZZLE5				(1<<15)
#define SC2_PUZZLE6				(1<<16)
#define SC2_PUZZLE7				(1<<17)
#define SC2_PUZZLE8				(1<<18)
#define SC2_MAXHEALTH			(1<<19)
#define SC2_MAXMANA				(1<<20)
#define SC2_FLAGS				(1<<21)

// This is to mask out those items that need to generate a stat bar change
#define SC1_STAT_BAR   0x01ffffff
#define SC2_STAT_BAR   0x0

// This is to mask out those items in the inventory (for inventory changes)
#define SC1_INV 0x01fffc00
#define SC2_INV 0x00000000

//==============================================

// a sound with no channel is a local only sound
// the sound field has bits 0-2: channel, 3-12: entity
#define	SND_VOLUME		(1<<15)		// a byte
#define	SND_ATTENUATION	(1<<14)		// a byte

#define DEFAULT_SOUND_PACKET_VOLUME 255
#define DEFAULT_SOUND_PACKET_ATTENUATION 1.0

// svc_print messages have an id, so messages can be filtered
#define	PRINT_LOW			0
#define	PRINT_MEDIUM		1
#define	PRINT_HIGH			2
#define	PRINT_CHAT			3	// also go to chat buffer

//
// temp entity events
//
#define	TE_SPIKE				0
#define	TE_SUPERSPIKE			1
#define	TE_GUNSHOT				2
#define	TE_EXPLOSION			3
#define	TE_TAREXPLOSION			4
#define	TE_LIGHTNING1			5
#define	TE_LIGHTNING2			6
#define	TE_WIZSPIKE				7
#define	TE_KNIGHTSPIKE			8
#define	TE_LIGHTNING3			9
#define	TE_LAVASPLASH			10
#define	TE_TELEPORT				11
#define	TE_BLOOD				12
#define	TE_LIGHTNINGBLOOD		13

// hexen 2
#define TE_STREAM_CHAIN			25
#define TE_STREAM_SUNSTAFF1		26
#define TE_STREAM_SUNSTAFF2		27
#define TE_STREAM_LIGHTNING		28
#define TE_STREAM_COLORBEAM		29
#define TE_STREAM_ICECHUNKS		30
#define TE_STREAM_GAZE			31
#define TE_STREAM_FAMINE		32

#define TE_BIGGRENADE			33
#define TE_CHUNK				34
#define TE_HWBONEPOWER			35
#define TE_HWBONEPOWER2			36
#define TE_METEORHIT			37
#define TE_HWRAVENDIE			38
#define TE_HWRAVENEXPLODE		39
#define TE_XBOWHIT				40

#define	TE_CHUNK2				41
#define TE_ICEHIT				42
#define TE_ICESTORM				43
#define TE_HWMISSILEFLASH		44
#define TE_SUNSTAFF_CHEAP		45
#define TE_LIGHTNING_HAMMER		46
#define TE_DRILLA_EXPLODE		47
#define TE_DRILLA_DRILL			48

#define TE_HWTELEPORT			49
#define TE_SWORD_EXPLOSION		50

#define TE_AXE_BOUNCE			51
#define TE_AXE_EXPLODE			52
#define TE_TIME_BOMB			53
#define TE_FIREBALL				54
#define TE_SUNSTAFF_POWER		55
#define TE_PURIFY2_EXPLODE		56
#define TE_PLAYER_DEATH			57
#define TE_PURIFY1_EFFECT		58
#define TE_TELEPORT_LINGER		59
#define TE_LINE_EXPLOSION		60
#define TE_METEOR_CRUSH			61
//MISSION PACK
#define TE_STREAM_LIGHTNING_SMALL	62

#define TE_ACIDBALL				63
#define TE_ACIDBLOB				64
#define TE_FIREWALL				65
#define TE_FIREWALL_IMPACT		66
#define TE_HWBONERIC			67
#define TE_POWERFLAME			68
#define TE_BLOODRAIN			69
#define TE_AXE					70
#define TE_PURIFY2_MISSILE		71
#define TE_SWORD_SHOT			72
#define TE_ICESHOT				73
#define TE_METEOR				74
#define TE_LIGHTNINGBALL		75
#define TE_MEGAMETEOR			76
#define TE_CUBEBEAM				77
#define TE_LIGHTNINGEXPLODE		78
#define TE_ACID_BALL_FLY		79
#define TE_ACID_BLOB_FLY		80
#define TE_CHAINLIGHTNING		81

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

  ELEMENTS COMMUNICATED ACROSS THE NET

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

#define	MAX_CLIENTS		32

#define	UPDATE_BACKUP	64	// copies of entity_state_t to keep buffered
							// must be power of two
#define	UPDATE_MASK		(UPDATE_BACKUP-1)

// entity_state_t is the information conveyed from the server
// in an update message
typedef struct
{
	int		number;			// edict index

	int		flags;			// nolerp, etc
	vec3_t	origin;
	vec3_t	angles;
	int		modelindex;
	int		frame;
	int		colormap;
	int		skinnum;
	int		effects;
	int		scale;			// for Alias models
	int		drawflags;		// for Alias models
	int		abslight;		// for Alias models
	int		wpn_sound;			// for cheap playing of sounds
} entity_state_t;


#define	MAX_PACKET_ENTITIES	64	// doesn't count nails
typedef struct
{
	int		num_entities;
	entity_state_t	entities[MAX_PACKET_ENTITIES];
} packet_entities_t;

typedef struct usercmd_s
{
	byte	msec;
	vec3_t	angles;
	short	forwardmove, sidemove, upmove;
	byte	buttons;
	byte	impulse;
	byte	light_level;
} usercmd_t;