halflife-photomode/dlls/util.h

/***
*
*	Copyright (c) 1996-2001, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/

#pragma once

#include "Platform.h"

//
// Misc utility code
//
#include "activity.h"
#include "enginecallback.h"

class CBaseEntity;

inline void MESSAGE_BEGIN(int msg_dest, int msg_type, const float* pOrigin, entvars_t* ent); // implementation later in this file

inline globalvars_t* gpGlobals = nullptr;

// Use this instead of ALLOC_STRING on constant strings
#define STRING(offset) ((const char*)(gpGlobals->pStringBase + (unsigned int)(offset)))
#define MAKE_STRING(str) ((uint64)(str) - (uint64)(STRING(0)))

inline edict_t* FIND_ENTITY_BY_CLASSNAME(edict_t* entStart, const char* pszName)
{
	return FIND_ENTITY_BY_STRING(entStart, "classname", pszName);
}

inline edict_t* FIND_ENTITY_BY_TARGETNAME(edict_t* entStart, const char* pszName)
{
	return FIND_ENTITY_BY_STRING(entStart, "targetname", pszName);
}

// for doing a reverse lookup. Say you have a door, and want to find its button.
inline edict_t* FIND_ENTITY_BY_TARGET(edict_t* entStart, const char* pszName)
{
	return FIND_ENTITY_BY_STRING(entStart, "target", pszName);
}

// Keeps clutter down a bit, when writing key-value pairs
#define WRITEKEY_INT(pf, szKeyName, iKeyValue) ENGINE_FPRINTF(pf, "\"%s\" \"%d\"\n", szKeyName, iKeyValue)
#define WRITEKEY_FLOAT(pf, szKeyName, flKeyValue) \
	ENGINE_FPRINTF(pf, "\"%s\" \"%f\"\n", szKeyName, flKeyValue)
#define WRITEKEY_STRING(pf, szKeyName, szKeyValue) \
	ENGINE_FPRINTF(pf, "\"%s\" \"%s\"\n", szKeyName, szKeyValue)
#define WRITEKEY_VECTOR(pf, szKeyName, flX, flY, flZ) \
	ENGINE_FPRINTF(pf, "\"%s\" \"%f %f %f\"\n", szKeyName, flX, flY, flZ)

// Keeps clutter down a bit, when using a float as a bit-vector
#define SetBits(flBitVector, bits) ((flBitVector) = (int)(flBitVector) | (bits))
#define ClearBits(flBitVector, bits) ((flBitVector) = (int)(flBitVector) & ~(bits))
#define FBitSet(flBitVector, bit) (((int)(flBitVector) & (bit)) != 0)

// Makes these more explicit, and easier to find
#define FILE_GLOBAL static
#define DLL_GLOBAL

// Until we figure out why "const" gives the compiler problems, we'll just have to use
// this bogus "empty" define to mark things as constant.
#define CONSTANT

// More explicit than "int"
typedef int EOFFSET;

// In case this ever changes
#define M_PI 3.14159265358979323846

// Keeps clutter down a bit, when declaring external entity/global method prototypes
#define DECLARE_GLOBAL_METHOD(MethodName) extern void DLLEXPORT MethodName()
#define GLOBAL_METHOD(funcname) void DLLEXPORT funcname()

// This is the glue that hooks .MAP entity class names to our CPP classes
// The _declspec forces them to be exported by name so we can do a lookup with GetProcAddress()
// The function is used to intialize / allocate the object for the entity
#define LINK_ENTITY_TO_CLASS(mapClassName, DLLClassName)    \
	extern "C" DLLEXPORT void mapClassName(entvars_t* pev); \
	void mapClassName(entvars_t* pev) { GetClassPtr((DLLClassName*)pev); }

/**
*	@brief Gets the list of entities.
*	Will return @c nullptr if there is no map loaded.
*/
edict_t* UTIL_GetEntityList();

/**
*	@brief Gets the local player in singleplayer, or @c nullptr in multiplayer.
*/
CBaseEntity* UTIL_GetLocalPlayer();

//
// Conversion among the three types of "entity", including identity-conversions.
//
#ifdef DEBUG
extern edict_t* DBG_EntOfVars(const entvars_t* pev);
inline edict_t* ENT(const entvars_t* pev) { return DBG_EntOfVars(pev); }
#else
inline edict_t* ENT(const entvars_t* pev)
{
	return pev->pContainingEntity;
}
#endif
inline edict_t* ENT(edict_t* pent)
{
	return pent;
}
inline edict_t* ENT(EOFFSET eoffset) { return (*g_engfuncs.pfnPEntityOfEntOffset)(eoffset); }
inline EOFFSET OFFSET(const edict_t* pent)
{
#if _DEBUG
	if (!pent)
		ALERT(at_error, "Bad ent in OFFSET()\n");
#endif
	return (*g_engfuncs.pfnEntOffsetOfPEntity)(pent);
}
inline EOFFSET OFFSET(entvars_t* pev)
{
#if _DEBUG
	if (!pev)
		ALERT(at_error, "Bad pev in OFFSET()\n");
#endif
	return OFFSET(ENT(pev));
}

inline entvars_t* VARS(edict_t* pent)
{
	if (!pent)
		return NULL;

	return &pent->v;
}

inline int ENTINDEX(edict_t* pEdict) { return (*g_engfuncs.pfnIndexOfEdict)(pEdict); }
inline edict_t* INDEXENT(int iEdictNum) { return (*g_engfuncs.pfnPEntityOfEntIndex)(iEdictNum); }
inline void MESSAGE_BEGIN(int msg_dest, int msg_type, const float* pOrigin, entvars_t* ent)
{
	(*g_engfuncs.pfnMessageBegin)(msg_dest, msg_type, pOrigin, ENT(ent));
}

// Testing the three types of "entity" for nullity
#define eoNullEntity 0
inline bool FNullEnt(EOFFSET eoffset)
{
	return eoffset == 0;
}
inline bool FNullEnt(const edict_t* pent) { return pent == NULL || FNullEnt(OFFSET(pent)); }
inline bool FNullEnt(entvars_t* pev) { return pev == NULL || FNullEnt(OFFSET(pev)); }

// Testing strings for nullity
#define iStringNull 0
inline bool FStringNull(int iString)
{
	return iString == iStringNull;
}

#define cchMapNameMost 32

// Dot products for view cone checking
#define VIEW_FIELD_FULL (float)-1.0		   // +-180 degrees
#define VIEW_FIELD_WIDE (float)-0.7		   // +-135 degrees 0.1 // +-85 degrees, used for full FOV checks
#define VIEW_FIELD_NARROW (float)0.7	   // +-45 degrees, more narrow check used to set up ranged attacks
#define VIEW_FIELD_ULTRA_NARROW (float)0.9 // +-25 degrees, more narrow check used to set up ranged attacks

// All monsters need this data
#define DONT_BLEED -1
#define BLOOD_COLOR_RED (byte)247
#define BLOOD_COLOR_YELLOW (byte)195
#define BLOOD_COLOR_GREEN BLOOD_COLOR_YELLOW

typedef enum
{

	MONSTERSTATE_NONE = 0,
	MONSTERSTATE_IDLE,
	MONSTERSTATE_COMBAT,
	MONSTERSTATE_ALERT,
	MONSTERSTATE_HUNT,
	MONSTERSTATE_PRONE,
	MONSTERSTATE_SCRIPT,
	MONSTERSTATE_PLAYDEAD,
	MONSTERSTATE_DEAD

} MONSTERSTATE;



// Things that toggle (buttons/triggers/doors) need this
typedef enum
{
	TS_AT_TOP,
	TS_AT_BOTTOM,
	TS_GOING_UP,
	TS_GOING_DOWN
} TOGGLE_STATE;

// Misc useful
inline bool FStrEq(const char* sz1, const char* sz2)
{
	return (strcmp(sz1, sz2) == 0);
}
inline bool FClassnameIs(edict_t* pent, const char* szClassname)
{
	return FStrEq(STRING(VARS(pent)->classname), szClassname);
}
inline bool FClassnameIs(entvars_t* pev, const char* szClassname)
{
	return FStrEq(STRING(pev->classname), szClassname);
}

// Misc. Prototypes
extern void UTIL_SetSize(entvars_t* pev, const Vector& vecMin, const Vector& vecMax);
extern float UTIL_VecToYaw(const Vector& vec);
extern Vector UTIL_VecToAngles(const Vector& vec);
extern float UTIL_AngleMod(float a);
extern float UTIL_AngleDiff(float destAngle, float srcAngle);

extern CBaseEntity* UTIL_FindEntityInSphere(CBaseEntity* pStartEntity, const Vector& vecCenter, float flRadius);
extern CBaseEntity* UTIL_FindEntityByString(CBaseEntity* pStartEntity, const char* szKeyword, const char* szValue);
extern CBaseEntity* UTIL_FindEntityByClassname(CBaseEntity* pStartEntity, const char* szName);
extern CBaseEntity* UTIL_FindEntityByTargetname(CBaseEntity* pStartEntity, const char* szName);
extern CBaseEntity* UTIL_FindEntityGeneric(const char* szName, Vector& vecSrc, float flRadius);

// returns a CBaseEntity pointer to a player by index.  Only returns if the player is spawned and connected
// otherwise returns NULL
// Index is 1 based
extern CBaseEntity* UTIL_PlayerByIndex(int playerIndex);

#define UTIL_EntitiesInPVS(pent) (*g_engfuncs.pfnEntitiesInPVS)(pent)
extern void UTIL_MakeVectors(const Vector& vecAngles);

// Pass in an array of pointers and an array size, it fills the array and returns the number inserted
extern int UTIL_MonstersInSphere(CBaseEntity** pList, int listMax, const Vector& center, float radius);
extern int UTIL_EntitiesInBox(CBaseEntity** pList, int listMax, const Vector& mins, const Vector& maxs, int flagMask);

inline void UTIL_MakeVectorsPrivate(const Vector& vecAngles, float* p_vForward, float* p_vRight, float* p_vUp)
{
	g_engfuncs.pfnAngleVectors(vecAngles, p_vForward, p_vRight, p_vUp);
}

extern void UTIL_MakeAimVectors(const Vector& vecAngles); // like MakeVectors, but assumes pitch isn't inverted
extern void UTIL_MakeInvVectors(const Vector& vec, globalvars_t* pgv);

extern void UTIL_SetOrigin(entvars_t* pev, const Vector& vecOrigin);
extern void UTIL_EmitAmbientSound(edict_t* entity, const Vector& vecOrigin, const char* samp, float vol, float attenuation, int fFlags, int pitch);
extern void UTIL_ParticleEffect(const Vector& vecOrigin, const Vector& vecDirection, unsigned int ulColor, unsigned int ulCount);
extern void UTIL_ScreenShake(const Vector& center, float amplitude, float frequency, float duration, float radius);
extern void UTIL_ScreenShakeAll(const Vector& center, float amplitude, float frequency, float duration);
extern void UTIL_ShowMessage(const char* pString, CBaseEntity* pPlayer);
extern void UTIL_ShowMessageAll(const char* pString);
extern void UTIL_ScreenFadeAll(const Vector& color, float fadeTime, float holdTime, int alpha, int flags);
extern void UTIL_ScreenFade(CBaseEntity* pEntity, const Vector& color, float fadeTime, float fadeHold, int alpha, int flags);

typedef enum
{
	ignore_monsters = 1,
	dont_ignore_monsters = 0,
	missile = 2
} IGNORE_MONSTERS;
typedef enum
{
	ignore_glass = 1,
	dont_ignore_glass = 0
} IGNORE_GLASS;
extern void UTIL_TraceLine(const Vector& vecStart, const Vector& vecEnd, IGNORE_MONSTERS igmon, edict_t* pentIgnore, TraceResult* ptr);
extern void UTIL_TraceLine(const Vector& vecStart, const Vector& vecEnd, IGNORE_MONSTERS igmon, IGNORE_GLASS ignoreGlass, edict_t* pentIgnore, TraceResult* ptr);
enum
{
	point_hull = 0,
	human_hull = 1,
	large_hull = 2,
	head_hull = 3
};
extern void UTIL_TraceHull(const Vector& vecStart, const Vector& vecEnd, IGNORE_MONSTERS igmon, int hullNumber, edict_t* pentIgnore, TraceResult* ptr);
extern TraceResult UTIL_GetGlobalTrace();
extern void UTIL_TraceModel(const Vector& vecStart, const Vector& vecEnd, int hullNumber, edict_t* pentModel, TraceResult* ptr);
extern Vector UTIL_GetAimVector(edict_t* pent, float flSpeed);
extern int UTIL_PointContents(const Vector& vec);

extern bool UTIL_IsMasterTriggered(string_t sMaster, CBaseEntity* pActivator);
extern void UTIL_BloodStream(const Vector& origin, const Vector& direction, int color, int amount);
extern void UTIL_BloodDrips(const Vector& origin, const Vector& direction, int color, int amount);
extern Vector UTIL_RandomBloodVector();
extern bool UTIL_ShouldShowBlood(int bloodColor);
extern void UTIL_BloodDecalTrace(TraceResult* pTrace, int bloodColor);
extern void UTIL_DecalTrace(TraceResult* pTrace, int decalNumber);
extern void UTIL_PlayerDecalTrace(TraceResult* pTrace, int playernum, int decalNumber, bool bIsCustom);
extern void UTIL_GunshotDecalTrace(TraceResult* pTrace, int decalNumber);
extern void UTIL_Sparks(const Vector& position);
extern void UTIL_Ricochet(const Vector& position, float scale);
extern void UTIL_StringToVector(float* pVector, const char* pString);
extern void UTIL_StringToIntArray(int* pVector, int count, const char* pString);
extern Vector UTIL_ClampVectorToBox(const Vector& input, const Vector& clampSize);
extern float UTIL_Approach(float target, float value, float speed);
extern float UTIL_ApproachAngle(float target, float value, float speed);
extern float UTIL_AngleDistance(float next, float cur);

extern char* UTIL_VarArgs(const char* format, ...);
extern void UTIL_Remove(CBaseEntity* pEntity);
extern bool UTIL_IsValidEntity(edict_t* pent);
extern bool UTIL_TeamsMatch(const char* pTeamName1, const char* pTeamName2);

// Use for ease-in, ease-out style interpolation (accel/decel)
extern float UTIL_SplineFraction(float value, float scale);

// Search for water transition along a vertical line
extern float UTIL_WaterLevel(const Vector& position, float minz, float maxz);
extern void UTIL_Bubbles(Vector mins, Vector maxs, int count);
extern void UTIL_BubbleTrail(Vector from, Vector to, int count);

// allows precacheing of other entities
extern void UTIL_PrecacheOther(const char* szClassname);

// prints a message to each client
extern void UTIL_ClientPrintAll(int msg_dest, const char* msg_name, const char* param1 = NULL, const char* param2 = NULL, const char* param3 = NULL, const char* param4 = NULL);
inline void UTIL_CenterPrintAll(const char* msg_name, const char* param1 = NULL, const char* param2 = NULL, const char* param3 = NULL, const char* param4 = NULL)
{
	UTIL_ClientPrintAll(HUD_PRINTCENTER, msg_name, param1, param2, param3, param4);
}

class CBasePlayerItem;
class CBasePlayer;

// prints messages through the HUD
extern void ClientPrint(entvars_t* client, int msg_dest, const char* msg_name, const char* param1 = NULL, const char* param2 = NULL, const char* param3 = NULL, const char* param4 = NULL);

// prints a message to the HUD say (chat)
extern void UTIL_SayText(const char* pText, CBaseEntity* pEntity);
extern void UTIL_SayTextAll(const char* pText, CBaseEntity* pEntity);


typedef struct hudtextparms_s
{
	float x;
	float y;
	int effect;
	byte r1, g1, b1, a1;
	byte r2, g2, b2, a2;
	float fadeinTime;
	float fadeoutTime;
	float holdTime;
	float fxTime;
	int channel;
} hudtextparms_t;

// prints as transparent 'title' to the HUD
extern void UTIL_HudMessageAll(const hudtextparms_t& textparms, const char* pMessage);
extern void UTIL_HudMessage(CBaseEntity* pEntity, const hudtextparms_t& textparms, const char* pMessage);

// for handy use with ClientPrint params
extern char* UTIL_dtos1(int d);
extern char* UTIL_dtos2(int d);
extern char* UTIL_dtos3(int d);
extern char* UTIL_dtos4(int d);

// Writes message to console with timestamp and FragLog header.
extern void UTIL_LogPrintf(const char* fmt, ...);

// Sorta like FInViewCone, but for nonmonsters.
extern float UTIL_DotPoints(const Vector& vecSrc, const Vector& vecCheck, const Vector& vecDir);

extern void UTIL_StripToken(const char* pKey, char* pDest, int nLen); // for redundant keynames

// Misc functions
extern void SetMovedir(entvars_t* pev);
extern Vector VecBModelOrigin(entvars_t* pevBModel);
extern int BuildChangeList(LEVELLIST* pLevelList, int maxList);

//
// How did I ever live without ASSERT?
//
#ifdef DEBUG
void DBG_AssertFunction(bool fExpr, const char* szExpr, const char* szFile, int szLine, const char* szMessage);
#define ASSERT(f) DBG_AssertFunction(f, #f, __FILE__, __LINE__, NULL)
#define ASSERTSZ(f, sz) DBG_AssertFunction(f, #f, __FILE__, __LINE__, sz)
#else // !DEBUG
#define ASSERT(f)
#define ASSERTSZ(f, sz)
#endif // !DEBUG

//
// Constants that were used only by QC (maybe not used at all now)
//
// Un-comment only as needed
//
#define LANGUAGE_ENGLISH 0
#define LANGUAGE_GERMAN 1
#define LANGUAGE_FRENCH 2
#define LANGUAGE_BRITISH 3

inline DLL_GLOBAL int g_Language;

#define AMBIENT_SOUND_STATIC 0 // medium radius attenuation
#define AMBIENT_SOUND_EVERYWHERE 1
#define AMBIENT_SOUND_SMALLRADIUS 2
#define AMBIENT_SOUND_MEDIUMRADIUS 4
#define AMBIENT_SOUND_LARGERADIUS 8
#define AMBIENT_SOUND_START_SILENT 16
#define AMBIENT_SOUND_NOT_LOOPING 32

#define SPEAKER_START_SILENT 1 // wait for trigger 'on' to start announcements

#define SND_SPAWNING (1 << 8)	  // duplicated in protocol.h we're spawing, used in some cases for ambients
#define SND_STOP (1 << 5)		  // duplicated in protocol.h stop sound
#define SND_CHANGE_VOL (1 << 6)	  // duplicated in protocol.h change sound vol
#define SND_CHANGE_PITCH (1 << 7) // duplicated in protocol.h change sound pitch

#define LFO_SQUARE 1
#define LFO_TRIANGLE 2
#define LFO_RANDOM 3

// func_rotating
#define SF_BRUSH_ROTATE_Y_AXIS 0
#define SF_BRUSH_ROTATE_INSTANT 1
#define SF_BRUSH_ROTATE_BACKWARDS 2
#define SF_BRUSH_ROTATE_Z_AXIS 4
#define SF_BRUSH_ROTATE_X_AXIS 8
#define SF_PENDULUM_AUTO_RETURN 16
#define SF_PENDULUM_PASSABLE 32


#define SF_BRUSH_ROTATE_SMALLRADIUS 128
#define SF_BRUSH_ROTATE_MEDIUMRADIUS 256
#define SF_BRUSH_ROTATE_LARGERADIUS 512

#define PUSH_BLOCK_ONLY_X 1
#define PUSH_BLOCK_ONLY_Y 2

#define SVC_TEMPENTITY 23
#define SVC_INTERMISSION 30
#define SVC_CDTRACK 32
#define SVC_WEAPONANIM 35
#define SVC_ROOMTYPE 37
#define SVC_DIRECTOR 51



// triggers
#define SF_TRIGGER_ALLOWMONSTERS 1 // monsters allowed to fire this trigger
#define SF_TRIGGER_NOCLIENTS 2	   // players not allowed to fire this trigger
#define SF_TRIGGER_PUSHABLES 4	   // only pushables can fire this trigger

// func breakable
#define SF_BREAK_TRIGGER_ONLY 1 // may only be broken by trigger
#define SF_BREAK_TOUCH 2		// can be 'crashed through' by running player (plate glass)
#define SF_BREAK_PRESSURE 4		// can be broken by a player standing on it
#define SF_BREAK_CROWBAR 256	// instant break if hit with crowbar

// func_pushable (it's also func_breakable, so don't collide with those flags)
#define SF_PUSH_BREAKABLE 128

#define SF_LIGHT_START_OFF 1

#define SPAWNFLAG_NOMESSAGE 1
#define SPAWNFLAG_NOTOUCH 1
#define SPAWNFLAG_DROIDONLY 4

#define SPAWNFLAG_USEONLY 1 // can't be touched, must be used (buttons)

#define TELE_PLAYER_ONLY 1
#define TELE_SILENT 2

#define SF_TRIG_PUSH_ONCE 1


// Sound Utilities

// sentence groups
#define CBSENTENCENAME_MAX 16
#define CVOXFILESENTENCEMAX 2048 // max number of sentences in game. NOTE: this must match \
								 // CVOXFILESENTENCEMAX in engine\sound.h!!!

extern char gszallsentencenames[CVOXFILESENTENCEMAX][CBSENTENCENAME_MAX];
extern int gcallsentences;

int USENTENCEG_Pick(int isentenceg, char* szfound);
int USENTENCEG_PickSequential(int isentenceg, char* szfound, int ipick, bool freset);
void USENTENCEG_InitLRU(unsigned char* plru, int count);

void SENTENCEG_Init();
void SENTENCEG_Stop(edict_t* entity, int isentenceg, int ipick);
int SENTENCEG_PlayRndI(edict_t* entity, int isentenceg, float volume, float attenuation, int flags, int pitch);
int SENTENCEG_PlayRndSz(edict_t* entity, const char* szrootname, float volume, float attenuation, int flags, int pitch);
int SENTENCEG_PlaySequentialSz(edict_t* entity, const char* szrootname, float volume, float attenuation, int flags, int pitch, int ipick, bool freset);
int SENTENCEG_GetIndex(const char* szrootname);
int SENTENCEG_Lookup(const char* sample, char* sentencenum);

void TEXTURETYPE_Init();
char TEXTURETYPE_Find(char* name);
float TEXTURETYPE_PlaySound(TraceResult* ptr, Vector vecSrc, Vector vecEnd, int iBulletType);

// NOTE: use EMIT_SOUND_DYN to set the pitch of a sound. Pitch of 100
// is no pitch shift.  Pitch > 100 up to 255 is a higher pitch, pitch < 100
// down to 1 is a lower pitch.   150 to 70 is the realistic range.
// EMIT_SOUND_DYN with pitch != 100 should be used sparingly, as it's not quite as
// fast as EMIT_SOUND (the pitchshift mixer is not native coded).

void EMIT_SOUND_DYN(edict_t* entity, int channel, const char* sample, float volume, float attenuation,
	int flags, int pitch);


inline void EMIT_SOUND(edict_t* entity, int channel, const char* sample, float volume, float attenuation)
{
	EMIT_SOUND_DYN(entity, channel, sample, volume, attenuation, 0, PITCH_NORM);
}

inline void STOP_SOUND(edict_t* entity, int channel, const char* sample)
{
	EMIT_SOUND_DYN(entity, channel, sample, 0, 0, SND_STOP, PITCH_NORM);
}

/**
*	@brief Just like @see EMIT_SOUND_DYN, but will skip the current host player if they have cl_lw turned on.
*	@details entity must be the current host entity for this to work, and must be called only inside a player's PostThink method.
*/
void EMIT_SOUND_PREDICTED(edict_t* entity, int channel, const char* sample, float volume, float attenuation,
	int flags, int pitch);

void EMIT_SOUND_SUIT(edict_t* entity, const char* sample);
void EMIT_GROUPID_SUIT(edict_t* entity, int isentenceg);
void EMIT_GROUPNAME_SUIT(edict_t* entity, const char* groupname);

#define PRECACHE_SOUND_ARRAY(a)                \
	{                                          \
		for (int i = 0; i < ARRAYSIZE(a); i++) \
			PRECACHE_SOUND((char*)a[i]);       \
	}

#define EMIT_SOUND_ARRAY_DYN(chan, array) \
	EMIT_SOUND_DYN(ENT(pev), chan, array[RANDOM_LONG(0, ARRAYSIZE(array) - 1)], 1.0, ATTN_NORM, 0, RANDOM_LONG(95, 105));

#define RANDOM_SOUND_ARRAY(array) (array)[RANDOM_LONG(0, ARRAYSIZE((array)) - 1)]

#define PLAYBACK_EVENT(flags, who, index) PLAYBACK_EVENT_FULL(flags, who, index, 0, g_vecZero, g_vecZero, 0.0, 0.0, 0, 0, 0, 0);
#define PLAYBACK_EVENT_DELAY(flags, who, index, delay) PLAYBACK_EVENT_FULL(flags, who, index, delay, g_vecZero, g_vecZero, 0.0, 0.0, 0, 0, 0, 0);

#define GROUP_OP_AND 0
#define GROUP_OP_NAND 1

inline int g_groupmask = 0;
inline int g_groupop = 0;

class UTIL_GroupTrace
{
public:
	UTIL_GroupTrace(int groupmask, int op);
	~UTIL_GroupTrace();

private:
	int m_oldgroupmask, m_oldgroupop;
};

void UTIL_SetGroupTrace(int groupmask, int op);
void UTIL_UnsetGroupTrace();

int UTIL_SharedRandomLong(unsigned int seed, int low, int high);
float UTIL_SharedRandomFloat(unsigned int seed, float low, float high);

float UTIL_WeaponTimeBase();

CBaseEntity* UTIL_FindEntityForward(CBaseEntity* pMe);

constexpr bool UTIL_IsServer()
{
#ifdef CLIENT_DLL
	return false;
#else
	return true;
#endif
}

/**
*	@brief Helper type to run a function when the helper is destroyed.
*	Useful for running cleanup on scope exit and function return.
*/
template <typename Func>
struct CallOnDestroy
{
	const Func Function;

	explicit CallOnDestroy(Func&& function)
		: Function(function)
	{
	}

	~CallOnDestroy()
	{
		Function();
	}
};