g_local.h

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/*
Copyright (C) 1997-2001 Id Software, Inc.
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 
See the GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
*/
// g_local.h -- local definitions for game module
 
#include "q_shared.h"
 
// define GAME_INCLUDE so that game.h does not define the
// short, server-visible gclient_t and edict_t structures,
// because we define the full size ones in this file
#define GAME_INCLUDE
#include "game.h"
 
#include <inttypes.h>
 
// the "gameversion" client command will print this plus compile date
#define GAMEVERSION "baseq2"
 
// protocol bytes that can be directly added to messages
#define svc_muzzleflash     1
#define svc_muzzleflash2    2
#define svc_temp_entity     3
#define svc_layout          4
#define svc_inventory       5
#define svc_stufftext       11
 
//==================================================================
 
// view pitching times
#define DAMAGE_TIME     0.5
#define FALL_TIME       0.3
 
 
// edict->spawnflags
// these are set with checkboxes on each entity in the map editor
#define SPAWNFLAG_NOT_EASY          0x00000100
#define SPAWNFLAG_NOT_MEDIUM        0x00000200
#define SPAWNFLAG_NOT_HARD          0x00000400
#define SPAWNFLAG_NOT_DEATHMATCH    0x00000800
#define SPAWNFLAG_NOT_COOP          0x00001000
 
// edict->flags
#define FL_FLY                  0x00000001
#define FL_SWIM                 0x00000002  // implied immunity to drowining
#define FL_IMMUNE_LASER         0x00000004
#define FL_INWATER              0x00000008
#define FL_GODMODE              0x00000010
#define FL_NOTARGET             0x00000020
#define FL_IMMUNE_SLIME         0x00000040
#define FL_IMMUNE_LAVA          0x00000080
#define FL_PARTIALGROUND        0x00000100  // not all corners are valid
#define FL_WATERJUMP            0x00000200  // player jumping out of water
#define FL_TEAMSLAVE            0x00000400  // not the first on the team
#define FL_NO_KNOCKBACK         0x00000800
#define FL_POWER_ARMOR          0x00001000  // power armor (if any) is active
#define FL_RESPAWN              0x80000000  // used for item respawning
 
 
#define FRAMETIME       0.1
 
// memory tags to allow dynamic memory to be cleaned up
#define TAG_GAME    765     // clear when unloading the dll
#define TAG_LEVEL   766     // clear when loading a new level
 
 
#define MELEE_DISTANCE  80
 
#define BODY_QUEUE_SIZE     8
 
typedef enum
{
    DAMAGE_NO,
    DAMAGE_YES,         // will take damage if hit
    DAMAGE_AIM          // auto targeting recognizes this
} damage_t;
 
typedef enum 
{
    WEAPON_READY, 
    WEAPON_ACTIVATING,
    WEAPON_DROPPING,
    WEAPON_FIRING
} weaponstate_t;
 
typedef enum
{
    AMMO_BULLETS,
    AMMO_SHELLS,
    AMMO_ROCKETS,
    AMMO_GRENADES,
    AMMO_CELLS,
    AMMO_SLUGS
} ammo_t;
 
 
//deadflag
#define DEAD_NO                 0
#define DEAD_DYING              1
#define DEAD_DEAD               2
#define DEAD_RESPAWNABLE        3
 
//range
#define RANGE_MELEE             0
#define RANGE_NEAR              1
#define RANGE_MID               2
#define RANGE_FAR               3
 
//gib types
#define GIB_ORGANIC             0
#define GIB_METALLIC            1
 
//monster ai flags
#define AI_STAND_GROUND         0x00000001
#define AI_TEMP_STAND_GROUND    0x00000002
#define AI_SOUND_TARGET         0x00000004
#define AI_LOST_SIGHT           0x00000008
#define AI_PURSUIT_LAST_SEEN    0x00000010
#define AI_PURSUE_NEXT          0x00000020
#define AI_PURSUE_TEMP          0x00000040
#define AI_HOLD_FRAME           0x00000080
#define AI_GOOD_GUY             0x00000100
#define AI_BRUTAL               0x00000200
#define AI_NOSTEP               0x00000400
#define AI_DUCKED               0x00000800
#define AI_COMBAT_POINT         0x00001000
#define AI_MEDIC                0x00002000
#define AI_RESURRECTING         0x00004000
 
//monster attack state
#define AS_STRAIGHT             1
#define AS_SLIDING              2
#define AS_MELEE                3
#define AS_MISSILE              4
 
// armor types
#define ARMOR_NONE              0
#define ARMOR_JACKET            1
#define ARMOR_COMBAT            2
#define ARMOR_BODY              3
#define ARMOR_SHARD             4
 
// power armor types
#define POWER_ARMOR_NONE        0
#define POWER_ARMOR_SCREEN      1
#define POWER_ARMOR_SHIELD      2
 
// handedness values
#define RIGHT_HANDED            0
#define LEFT_HANDED             1
#define CENTER_HANDED           2
 
 
// game.serverflags values
#define SFL_CROSS_TRIGGER_1     0x00000001
#define SFL_CROSS_TRIGGER_2     0x00000002
#define SFL_CROSS_TRIGGER_3     0x00000004
#define SFL_CROSS_TRIGGER_4     0x00000008
#define SFL_CROSS_TRIGGER_5     0x00000010
#define SFL_CROSS_TRIGGER_6     0x00000020
#define SFL_CROSS_TRIGGER_7     0x00000040
#define SFL_CROSS_TRIGGER_8     0x00000080
#define SFL_CROSS_TRIGGER_MASK  0x000000ff
 
 
// noise types for PlayerNoise
#define PNOISE_SELF             0
#define PNOISE_WEAPON           1
#define PNOISE_IMPACT           2
 
 
// edict->movetype values
typedef enum
{
MOVETYPE_NONE,          // never moves
MOVETYPE_NOCLIP,        // origin and angles change with no interaction
MOVETYPE_PUSH,          // no clip to world, push on box contact
MOVETYPE_STOP,          // no clip to world, stops on box contact
 
MOVETYPE_WALK,          // gravity
MOVETYPE_STEP,          // gravity, special edge handling
MOVETYPE_FLY,
MOVETYPE_TOSS,          // gravity
MOVETYPE_FLYMISSILE,    // extra size to monsters
MOVETYPE_BOUNCE
} movetype_t;
 
 
 
typedef struct
{
    int     base_count;
    int     max_count;
    float   normal_protection;
    float   energy_protection;
    int     armor;
} gitem_armor_t;
 
 
// gitem_t->flags
#define IT_WEAPON       1       // use makes active weapon
#define IT_AMMO         2
#define IT_ARMOR        4
#define IT_STAY_COOP    8
#define IT_KEY          16
#define IT_POWERUP      32
 
// gitem_t->weapmodel for weapons indicates model index
#define WEAP_BLASTER            1 
#define WEAP_SHOTGUN            2 
#define WEAP_SUPERSHOTGUN       3 
#define WEAP_MACHINEGUN         4 
#define WEAP_CHAINGUN           5 
#define WEAP_GRENADES           6 
#define WEAP_GRENADELAUNCHER    7 
#define WEAP_ROCKETLAUNCHER     8 
#define WEAP_HYPERBLASTER       9 
#define WEAP_RAILGUN            10
#define WEAP_BFG                11
 
typedef struct gitem_s
{
    char        *classname; // spawning name
    qboolean    (*pickup)(struct edict_s *ent, struct edict_s *other);
    void        (*use)(struct edict_s *ent, struct gitem_s *item);
    void        (*drop)(struct edict_s *ent, struct gitem_s *item);
    void        (*weaponthink)(struct edict_s *ent);
    char        *pickup_sound;
    char        *world_model;
    int         world_model_flags;
    char        *view_model;
 
    // client side info
    char        *icon;
    char        *pickup_name;   // for printing on pickup
    int         count_width;        // number of digits to display by icon
 
    int         quantity;       // for ammo how much, for weapons how much is used per shot
    char        *ammo;          // for weapons
    int         flags;          // IT_* flags
 
    int         weapmodel;      // weapon model index (for weapons)
 
    void        *info;
    int         tag;
 
    char        *precaches;     // string of all models, sounds, and images this item will use
} gitem_t;
 
 
 
//
// this structure is left intact through an entire game
// it should be initialized at dll load time, and read/written to
// the server.ssv file for savegames
//
typedef struct
{
    char        helpmessage1[512];
    char        helpmessage2[512];
    int         helpchanged;    // flash F1 icon if non 0, play sound
                                // and increment only if 1, 2, or 3
 
    gclient_t   *clients;       // [maxclients]
 
    // can't store spawnpoint in level, because
    // it would get overwritten by the savegame restore
    char        spawnpoint[512];    // needed for coop respawns
 
    // store latched cvars here that we want to get at often
    int         maxclients;
    int         maxentities;
 
    // cross level triggers
    int         serverflags;
 
    // items
    int         num_items;
 
    qboolean    autosaved;
} game_locals_t;
 
 
//
// this structure is cleared as each map is entered
// it is read/written to the level.sav file for savegames
//
typedef struct
{
    int         framenum;
    float       time;
 
    char        level_name[MAX_QPATH];  // the descriptive name (Outer Base, etc)
    char        mapname[MAX_QPATH];     // the server name (base1, etc)
    char        nextmap[MAX_QPATH];     // go here when fraglimit is hit
 
    // intermission state
    float       intermissiontime;       // time the intermission was started
    char        *changemap;
    int         exitintermission;
    vec3_t      intermission_origin;
    vec3_t      intermission_angle;
 
    edict_t     *sight_client;  // changed once each frame for coop games
 
    edict_t     *sight_entity;
    int         sight_entity_framenum;
    edict_t     *sound_entity;
    int         sound_entity_framenum;
    edict_t     *sound2_entity;
    int         sound2_entity_framenum;
 
    int         pic_health;
 
    int         total_secrets;
    int         found_secrets;
 
    int         total_goals;
    int         found_goals;
 
    int         total_monsters;
    int         killed_monsters;
 
    edict_t     *current_entity;    // entity running from G_RunFrame
    int         body_que;           // dead bodies
 
    int         power_cubes;        // ugly necessity for coop
} level_locals_t;
 
 
// spawn_temp_t is only used to hold entity field values that
// can be set from the editor, but aren't actualy present
// in edict_t during gameplay
typedef struct
{
    // world vars
    char        *sky;
    float       skyrotate;
    vec3_t      skyaxis;
    char        *nextmap;
 
    int         lip;
    int         distance;
    int         height;
    char        *noise;
    float       pausetime;
    char        *item;
    char        *gravity;
 
    float       minyaw;
    float       maxyaw;
    float       minpitch;
    float       maxpitch;
} spawn_temp_t;
 
 
typedef struct
{
    // fixed data
    vec3_t      start_origin;
    vec3_t      start_angles;
    vec3_t      end_origin;
    vec3_t      end_angles;
 
    int         sound_start;
    int         sound_middle;
    int         sound_end;
 
    float       accel;
    float       speed;
    float       decel;
    float       distance;
 
    float       wait;
 
    // state data
    int         state;
    vec3_t      dir;
    float       current_speed;
    float       move_speed;
    float       next_speed;
    float       remaining_distance;
    float       decel_distance;
    void        (*endfunc)(edict_t *);
} moveinfo_t;
 
 
typedef struct
{
    void    (*aifunc)(edict_t *self, float dist);
    float   dist;
    void    (*thinkfunc)(edict_t *self);
} mframe_t;
 
typedef struct
{
    int         firstframe;
    int         lastframe;
    mframe_t    *frame;
    void        (*endfunc)(edict_t *self);
} mmove_t;
 
typedef struct
{
    mmove_t     *currentmove;
    int         aiflags;
    int         nextframe;
    float       scale;
 
    void        (*stand)(edict_t *self);
    void        (*idle)(edict_t *self);
    void        (*search)(edict_t *self);
    void        (*walk)(edict_t *self);
    void        (*run)(edict_t *self);
    void        (*dodge)(edict_t *self, edict_t *other, float eta);
    void        (*attack)(edict_t *self);
    void        (*melee)(edict_t *self);
    void        (*sight)(edict_t *self, edict_t *other);
    qboolean    (*checkattack)(edict_t *self);
 
    float       pausetime;
    float       attack_finished;
 
    vec3_t      saved_goal;
    float       search_time;
    float       trail_time;
    vec3_t      last_sighting;
    int         attack_state;
    int         lefty;
    float       idle_time;
    int         linkcount;
 
    int         power_armor_type;
    int         power_armor_power;
} monsterinfo_t;
 
 
 
extern  game_locals_t   game;
extern  level_locals_t  level;
extern  game_import_t   gi;
extern  game_export_t   globals;
extern  spawn_temp_t    st;
 
extern  int sm_meat_index;
extern  int snd_fry;
 
extern  int jacket_armor_index;
extern  int combat_armor_index;
extern  int body_armor_index;
 
 
// means of death
#define MOD_UNKNOWN         0
#define MOD_BLASTER         1
#define MOD_SHOTGUN         2
#define MOD_SSHOTGUN        3
#define MOD_MACHINEGUN      4
#define MOD_CHAINGUN        5
#define MOD_GRENADE         6
#define MOD_G_SPLASH        7
#define MOD_ROCKET          8
#define MOD_R_SPLASH        9
#define MOD_HYPERBLASTER    10
#define MOD_RAILGUN         11
#define MOD_BFG_LASER       12
#define MOD_BFG_BLAST       13
#define MOD_BFG_EFFECT      14
#define MOD_HANDGRENADE     15
#define MOD_HG_SPLASH       16
#define MOD_WATER           17
#define MOD_SLIME           18
#define MOD_LAVA            19
#define MOD_CRUSH           20
#define MOD_TELEFRAG        21
#define MOD_FALLING         22
#define MOD_SUICIDE         23
#define MOD_HELD_GRENADE    24
#define MOD_EXPLOSIVE       25
#define MOD_BARREL          26
#define MOD_BOMB            27
#define MOD_EXIT            28
#define MOD_SPLASH          29
#define MOD_TARGET_LASER    30
#define MOD_TRIGGER_HURT    31
#define MOD_HIT             32
#define MOD_TARGET_BLASTER  33
#define MOD_FRIENDLY_FIRE   0x8000000
 
extern  int meansOfDeath;
 
 
extern  edict_t         *g_edicts;
 
#define FOFS(x) (intptr_t)&(((edict_t *)0)->x)
#define STOFS(x) (intptr_t)&(((spawn_temp_t *)0)->x)
#define LLOFS(x) (intptr_t)&(((level_locals_t *)0)->x)
#define CLOFS(x) (intptr_t)&(((gclient_t *)0)->x)
 
#define random()    ((rand () & 0x7fff) / ((float)0x7fff))
#define crandom()   (2.0 * (random() - 0.5))
 
extern  cvar_t  *maxentities;
extern  cvar_t  *deathmatch;
extern  cvar_t  *coop;
extern  cvar_t  *dmflags;
extern  cvar_t  *skill;
extern  cvar_t  *fraglimit;
extern  cvar_t  *timelimit;
extern  cvar_t  *password;
extern  cvar_t  *spectator_password;
extern  cvar_t  *needpass;
extern  cvar_t  *g_select_empty;
extern  cvar_t  *dedicated;
 
extern  cvar_t  *filterban;
 
extern  cvar_t  *sv_gravity;
extern  cvar_t  *sv_maxvelocity;
 
extern  cvar_t  *gun_x, *gun_y, *gun_z;
extern  cvar_t  *sv_rollspeed;
extern  cvar_t  *sv_rollangle;
 
extern  cvar_t  *run_pitch;
extern  cvar_t  *run_roll;
extern  cvar_t  *bob_up;
extern  cvar_t  *bob_pitch;
extern  cvar_t  *bob_roll;
 
extern  cvar_t  *sv_cheats;
extern  cvar_t  *maxclients;
extern  cvar_t  *maxspectators;
 
extern  cvar_t  *flood_msgs;
extern  cvar_t  *flood_persecond;
extern  cvar_t  *flood_waitdelay;
 
extern  cvar_t  *sv_maplist;
 
#define world   (&g_edicts[0])
 
// item spawnflags
#define ITEM_TRIGGER_SPAWN      0x00000001
#define ITEM_NO_TOUCH           0x00000002
// 6 bits reserved for editor flags
// 8 bits used as power cube id bits for coop games
#define DROPPED_ITEM            0x00010000
#define DROPPED_PLAYER_ITEM     0x00020000
#define ITEM_TARGETS_USED       0x00040000
 
//
// fields are needed for spawning from the entity string
// and saving / loading games
//
#define FFL_SPAWNTEMP       1
#define FFL_NOSPAWN         2
 
typedef enum {
    F_INT, 
    F_FLOAT,
    F_LSTRING,          // string on disk, pointer in memory, TAG_LEVEL
    F_GSTRING,          // string on disk, pointer in memory, TAG_GAME
    F_VECTOR,
    F_ANGLEHACK,
    F_EDICT,            // index on disk, pointer in memory
    F_ITEM,             // index on disk, pointer in memory
    F_CLIENT,           // index on disk, pointer in memory
    F_FUNCTION,
    F_MMOVE,
    F_IGNORE
} fieldtype_t;
 
typedef struct
{
    char    *name;
    int     ofs;
    fieldtype_t type;
    int     flags;
} field_t;
 
 
extern  field_t fields[];
extern  gitem_t itemlist[];
 
 
//
// g_cmds.c
//
void Cmd_Help_f (edict_t *ent);
void Cmd_Score_f (edict_t *ent);
 
//
// g_items.c
//
void PrecacheItem (gitem_t *it);
void InitItems (void);
void SetItemNames (void);
gitem_t *FindItem (char *pickup_name);
gitem_t *FindItemByClassname (char *classname);
#define ITEM_INDEX(x) ((x)-itemlist)
edict_t *Drop_Item (edict_t *ent, gitem_t *item);
void SetRespawn (edict_t *ent, float delay);
void ChangeWeapon (edict_t *ent);
void SpawnItem (edict_t *ent, gitem_t *item);
void Think_Weapon (edict_t *ent);
int ArmorIndex (edict_t *ent);
int PowerArmorType (edict_t *ent);
gitem_t *GetItemByIndex (int index);
qboolean Add_Ammo (edict_t *ent, gitem_t *item, int count);
void Touch_Item (edict_t *ent, edict_t *other, cplane_t *plane, csurface_t *surf);
 
//
// g_utils.c
//
qboolean    KillBox (edict_t *ent);
void    G_ProjectSource (vec3_t point, vec3_t distance, vec3_t forward, vec3_t right, vec3_t result);
edict_t *G_Find (edict_t *from, int fieldofs, char *match);
edict_t *findradius (edict_t *from, vec3_t org, float rad);
edict_t *G_PickTarget (char *targetname);
void    G_UseTargets (edict_t *ent, edict_t *activator);
void    G_SetMovedir (vec3_t angles, vec3_t movedir);
 
void    G_InitEdict (edict_t *e);
edict_t *G_Spawn (void);
void    G_FreeEdict (edict_t *e);
 
void    G_TouchTriggers (edict_t *ent);
void    G_TouchSolids (edict_t *ent);
 
char    *G_CopyString (char *in);
 
float   *tv (float x, float y, float z);
char    *vtos (vec3_t v);
 
float vectoyaw (vec3_t vec);
void vectoangles (vec3_t vec, vec3_t angles);
 
//
// g_combat.c
//
qboolean OnSameTeam (edict_t *ent1, edict_t *ent2);
qboolean CanDamage (edict_t *targ, edict_t *inflictor);
void T_Damage (edict_t *targ, edict_t *inflictor, edict_t *attacker, vec3_t dir, vec3_t point, vec3_t normal, int damage, int knockback, int dflags, int mod);
void T_RadiusDamage (edict_t *inflictor, edict_t *attacker, float damage, edict_t *ignore, float radius, int mod);
 
// damage flags
#define DAMAGE_RADIUS           0x00000001  // damage was indirect
#define DAMAGE_NO_ARMOR         0x00000002  // armour does not protect from this damage
#define DAMAGE_ENERGY           0x00000004  // damage is from an energy based weapon
#define DAMAGE_NO_KNOCKBACK     0x00000008  // do not affect velocity, just view angles
#define DAMAGE_BULLET           0x00000010  // damage is from a bullet (used for ricochets)
#define DAMAGE_NO_PROTECTION    0x00000020  // armor, shields, invulnerability, and godmode have no effect
 
#define DEFAULT_BULLET_HSPREAD  300
#define DEFAULT_BULLET_VSPREAD  500
#define DEFAULT_SHOTGUN_HSPREAD 1000
#define DEFAULT_SHOTGUN_VSPREAD 500
#define DEFAULT_DEATHMATCH_SHOTGUN_COUNT    12
#define DEFAULT_SHOTGUN_COUNT   12
#define DEFAULT_SSHOTGUN_COUNT  20
 
//
// g_monster.c
//
void monster_fire_bullet (edict_t *self, vec3_t start, vec3_t dir, int damage, int kick, int hspread, int vspread, int flashtype);
void monster_fire_shotgun (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int kick, int hspread, int vspread, int count, int flashtype);
void monster_fire_blaster (edict_t *self, vec3_t start, vec3_t dir, int damage, int speed, int flashtype, int effect);
void monster_fire_grenade (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int speed, int flashtype);
void monster_fire_rocket (edict_t *self, vec3_t start, vec3_t dir, int damage, int speed, int flashtype);
void monster_fire_railgun (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int kick, int flashtype);
void monster_fire_bfg (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int speed, int kick, float damage_radius, int flashtype);
void M_droptofloor (edict_t *ent);
void monster_think (edict_t *self);
void walkmonster_start (edict_t *self);
void swimmonster_start (edict_t *self);
void flymonster_start (edict_t *self);
void AttackFinished (edict_t *self, float time);
void monster_death_use (edict_t *self);
void M_CatagorizePosition (edict_t *ent);
qboolean M_CheckAttack (edict_t *self);
void M_FlyCheck (edict_t *self);
void M_CheckGround (edict_t *ent);
 
//
// g_misc.c
//
void ThrowHead (edict_t *self, char *gibname, int damage, int type);
void ThrowClientHead (edict_t *self, int damage);
void ThrowGib (edict_t *self, char *gibname, int damage, int type);
void BecomeExplosion1(edict_t *self);
 
//
// g_ai.c
//
void AI_SetSightClient (void);
 
void ai_stand (edict_t *self, float dist);
void ai_move (edict_t *self, float dist);
void ai_walk (edict_t *self, float dist);
void ai_turn (edict_t *self, float dist);
void ai_run (edict_t *self, float dist);
void ai_charge (edict_t *self, float dist);
int range (edict_t *self, edict_t *other);
 
void FoundTarget (edict_t *self);
qboolean infront (edict_t *self, edict_t *other);
qboolean visible (edict_t *self, edict_t *other);
qboolean FacingIdeal(edict_t *self);
 
//
// g_weapon.c
//
void ThrowDebris (edict_t *self, char *modelname, float speed, vec3_t origin);
qboolean fire_hit (edict_t *self, vec3_t aim, int damage, int kick);
void fire_bullet (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int kick, int hspread, int vspread, int mod);
void fire_shotgun (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int kick, int hspread, int vspread, int count, int mod);
void fire_blaster (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int speed, int effect, qboolean hyper);
void fire_grenade (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int speed, float timer, float damage_radius);
void fire_grenade2 (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int speed, float timer, float damage_radius, qboolean held);
void fire_rocket (edict_t *self, vec3_t start, vec3_t dir, int damage, int speed, float damage_radius, int radius_damage);
void fire_rail (edict_t *self, vec3_t start, vec3_t aimdir, int damage, int kick);
void fire_bfg (edict_t *self, vec3_t start, vec3_t dir, int damage, int speed, float damage_radius);
 
//
// g_ptrail.c
//
void PlayerTrail_Init (void);
void PlayerTrail_Add (vec3_t spot);
void PlayerTrail_New (vec3_t spot);
edict_t *PlayerTrail_PickFirst (edict_t *self);
edict_t *PlayerTrail_PickNext (edict_t *self);
edict_t *PlayerTrail_LastSpot (void);
 
//
// g_client.c
//
void respawn (edict_t *ent);
void BeginIntermission (edict_t *targ);
void PutClientInServer (edict_t *ent);
void InitClientPersistant (gclient_t *client);
void InitClientResp (gclient_t *client);
void InitBodyQue (void);
void ClientBeginServerFrame (edict_t *ent);
 
//
// g_player.c
//
void player_pain (edict_t *self, edict_t *other, float kick, int damage);
void player_die (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point);
 
//
// g_svcmds.c
//
void    ServerCommand (void);
qboolean SV_FilterPacket (char *from);
 
//
// p_view.c
//
void ClientEndServerFrame (edict_t *ent);
 
//
// p_hud.c
//
void MoveClientToIntermission (edict_t *client);
void G_SetStats (edict_t *ent);
void G_SetSpectatorStats (edict_t *ent);
void G_CheckChaseStats (edict_t *ent);
void ValidateSelectedItem (edict_t *ent);
void DeathmatchScoreboardMessage (edict_t *client, edict_t *killer);
 
//
// g_pweapon.c
//
void PlayerNoise(edict_t *who, vec3_t where, int type);
 
//
// m_move.c
//
qboolean M_CheckBottom (edict_t *ent);
qboolean M_walkmove (edict_t *ent, float yaw, float dist);
void M_MoveToGoal (edict_t *ent, float dist);
void M_ChangeYaw (edict_t *ent);
 
//
// g_phys.c
//
void G_RunEntity (edict_t *ent);
 
//
// g_main.c
//
void SaveClientData (void);
void FetchClientEntData (edict_t *ent);
 
//
// g_chase.c
//
void UpdateChaseCam(edict_t *ent);
void ChaseNext(edict_t *ent);
void ChasePrev(edict_t *ent);
void GetChaseTarget(edict_t *ent);
 
//============================================================================
 
// client_t->anim_priority
#define ANIM_BASIC      0       // stand / run
#define ANIM_WAVE       1
#define ANIM_JUMP       2
#define ANIM_PAIN       3
#define ANIM_ATTACK     4
#define ANIM_DEATH      5
#define ANIM_REVERSE    6
 
 
// client data that stays across multiple level loads
typedef struct
{
    char        userinfo[MAX_INFO_STRING];
    char        netname[16];
    int         hand;
 
    qboolean    connected;          // a loadgame will leave valid entities that
                                    // just don't have a connection yet
 
    // values saved and restored from edicts when changing levels
    int         health;
    int         max_health;
    int         savedFlags;
 
    int         selected_item;
    int         inventory[MAX_ITEMS];
 
    // ammo capacities
    int         max_bullets;
    int         max_shells;
    int         max_rockets;
    int         max_grenades;
    int         max_cells;
    int         max_slugs;
 
    gitem_t     *weapon;
    gitem_t     *lastweapon;
 
    int         power_cubes;    // used for tracking the cubes in coop games
    int         score;          // for calculating total unit score in coop games
 
    int         game_helpchanged;
    int         helpchanged;
 
    qboolean    spectator;          // client is a spectator
} client_persistant_t;
 
// client data that stays across deathmatch respawns
typedef struct
{
    client_persistant_t coop_respawn;   // what to set client->pers to on a respawn
    int         enterframe;         // level.framenum the client entered the game
    int         score;              // frags, etc
    vec3_t      cmd_angles;         // angles sent over in the last command
 
    qboolean    spectator;          // client is a spectator
} client_respawn_t;
 
// this structure is cleared on each PutClientInServer(),
// except for 'client->pers'
struct gclient_s
{
    // known to server
    player_state_t  ps;             // communicated by server to clients
    int             ping;
 
    // private to game
    client_persistant_t pers;
    client_respawn_t    resp;
    pmove_state_t       old_pmove;  // for detecting out-of-pmove changes
 
    qboolean    showscores;         // set layout stat
    qboolean    showinventory;      // set layout stat
    qboolean    showhelp;
    qboolean    showhelpicon;
 
    int         ammo_index;
 
    int         buttons;
    int         oldbuttons;
    int         latched_buttons;
 
    qboolean    weapon_thunk;
 
    gitem_t     *newweapon;
 
    // sum up damage over an entire frame, so
    // shotgun blasts give a single big kick
    int         damage_armor;       // damage absorbed by armor
    int         damage_parmor;      // damage absorbed by power armor
    int         damage_blood;       // damage taken out of health
    int         damage_knockback;   // impact damage
    vec3_t      damage_from;        // origin for vector calculation
 
    float       killer_yaw;         // when dead, look at killer
 
    weaponstate_t   weaponstate;
    vec3_t      kick_angles;    // weapon kicks
    vec3_t      kick_origin;
    float       v_dmg_roll, v_dmg_pitch, v_dmg_time;    // damage kicks
    float       fall_time, fall_value;      // for view drop on fall
    float       damage_alpha;
    float       bonus_alpha;
    vec3_t      damage_blend;
    vec3_t      v_angle;            // aiming direction
    float       bobtime;            // so off-ground doesn't change it
    vec3_t      oldviewangles;
    vec3_t      oldvelocity;
 
    float       next_drown_time;
    int         old_waterlevel;
    int         breather_sound;
 
    int         machinegun_shots;   // for weapon raising
 
    // animation vars
    int         anim_end;
    int         anim_priority;
    qboolean    anim_duck;
    qboolean    anim_run;
 
    // powerup timers
    float       quad_framenum;
    float       invincible_framenum;
    float       breather_framenum;
    float       enviro_framenum;
 
    qboolean    grenade_blew_up;
    float       grenade_time;
    int         silencer_shots;
    int         weapon_sound;
 
    float       pickup_msg_time;
 
    float       flood_locktill;     // locked from talking
    float       flood_when[10];     // when messages were said
    int         flood_whenhead;     // head pointer for when said
 
    float       respawn_time;       // can respawn when time > this
 
    edict_t     *chase_target;      // player we are chasing
    qboolean    update_chase;       // need to update chase info?
};
 
 
struct edict_s
{
    entity_state_t  s;
    struct gclient_s    *client;    // NULL if not a player
                                    // the server expects the first part
                                    // of gclient_s to be a player_state_t
                                    // but the rest of it is opaque
 
    qboolean    inuse;
    int         linkcount;
 
    // FIXME: move these fields to a server private sv_entity_t
    link_t      area;               // linked to a division node or leaf
    
    int         num_clusters;       // if -1, use headnode instead
    int         clusternums[MAX_ENT_CLUSTERS];
    int         headnode;           // unused if num_clusters != -1
    int         areanum, areanum2;
 
    //================================
 
    int         svflags;
    vec3_t      mins, maxs;
    vec3_t      absmin, absmax, size;
    solid_t     solid;
    int         clipmask;
    edict_t     *owner;
 
 
    // DO NOT MODIFY ANYTHING ABOVE THIS, THE SERVER
    // EXPECTS THE FIELDS IN THAT ORDER!
 
    //================================
    int         movetype;
    int         flags;
 
    char        *model;
    float       freetime;           // sv.time when the object was freed
    
    //
    // only used locally in game, not by server
    //
    char        *message;
    char        *classname;
    int         spawnflags;
 
    float       timestamp;
 
    float       angle;          // set in qe3, -1 = up, -2 = down
    char        *target;
    char        *targetname;
    char        *killtarget;
    char        *team;
    char        *pathtarget;
    char        *deathtarget;
    char        *combattarget;
    edict_t     *target_ent;
 
    float       speed, accel, decel;
    vec3_t      movedir;
    vec3_t      pos1, pos2;
 
    vec3_t      velocity;
    vec3_t      avelocity;
    int         mass;
    float       air_finished;
    float       gravity;        // per entity gravity multiplier (1.0 is normal)
                                // use for lowgrav artifact, flares
 
    edict_t     *goalentity;
    edict_t     *movetarget;
    float       yaw_speed;
    float       ideal_yaw;
 
    float       nextthink;
    void        (*prethink) (edict_t *ent);
    void        (*think)(edict_t *self);
    void        (*blocked)(edict_t *self, edict_t *other);  //move to moveinfo?
    void        (*touch)(edict_t *self, edict_t *other, cplane_t *plane, csurface_t *surf);
    void        (*use)(edict_t *self, edict_t *other, edict_t *activator);
    void        (*pain)(edict_t *self, edict_t *other, float kick, int damage);
    void        (*die)(edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point);
 
    float       touch_debounce_time;        // are all these legit?  do we need more/less of them?
    float       pain_debounce_time;
    float       damage_debounce_time;
    float       fly_sound_debounce_time;    //move to clientinfo
    float       last_move_time;
 
    int         health;
    int         max_health;
    int         gib_health;
    int         deadflag;
    qboolean    show_hostile;
 
    float       powerarmor_time;
 
    char        *map;           // target_changelevel
 
    int         viewheight;     // height above origin where eyesight is determined
    int         takedamage;
    int         dmg;
    int         radius_dmg;
    float       dmg_radius;
    int         sounds;         //make this a spawntemp var?
    int         count;
 
    edict_t     *chain;
    edict_t     *enemy;
    edict_t     *oldenemy;
    edict_t     *activator;
    edict_t     *groundentity;
    int         groundentity_linkcount;
    edict_t     *teamchain;
    edict_t     *teammaster;
 
    edict_t     *mynoise;       // can go in client only
    edict_t     *mynoise2;
 
    int         noise_index;
    int         noise_index2;
    float       volume;
    float       attenuation;
 
    // timing variables
    float       wait;
    float       delay;          // before firing targets
    float       random;
 
    float       teleport_time;
 
    int         watertype;
    int         waterlevel;
 
    vec3_t      move_origin;
    vec3_t      move_angles;
 
    // move this to clientinfo?
    int         light_level;
 
    int         style;          // also used as areaportal number
 
    gitem_t     *item;          // for bonus items
 
    // common data blocks
    moveinfo_t      moveinfo;
    monsterinfo_t   monsterinfo;
};