1. Open mp workspace-> goto New.
2. C/C++ source file name it, stealthsuit.cpp.
3. Copy and Paste!

Stealthsuit.cpp



/*
* This is the invisible pack
* they must have this equipped in order to be cloaked
* Thought that would be best to prevent invisible frags
* As they move with this equipped they are visible
* But when they stop they are entirely invisible!
*/


#include "extdll.h"
#include "util.h"
#include "cbase.h"
#include "monsters.h"
#include "weapons.h"
#include "nodes.h"
#include "player.h"
#include "gamerules.h"
#include "shake.h"//Ooooh make the screen turn colors when invisible.


class CStealth : public CBasePlayerWeapon
{
public:
void Spawn( void );
void Precache( void );
int iItemSlot( void ) { return 1; }
int GetItemInfo(ItemInfo *p);
int AddToPlayer( CBasePlayer *pPlayer );
void PrimaryAttack( void );
void SecondaryAttack(void);
void Cloak(void);
void UnCloak(void);
BOOL Deploy( void );
void Holster( void );
void WeaponIdle( void );
int cloak; //cloak amount
int cloaked; //cloak flag
float flSpeed; //Speed of player



};

LINK_ENTITY_TO_CLASS( weapon_stealthsuit, CStealth ); //remember to define this in weapons.cpp and weapons.h


//need a model for this? Perhaps just hands
enum stealth_e {
SATCHEL_RADIO_IDLE1 = 0,
SATCHEL_RADIO_FIDGET1,
SATCHEL_RADIO_DRAW,
SATCHEL_RADIO_FIRE,
SATCHEL_RADIO_HOLSTER
};
int CStealth::AddToPlayer( CBasePlayer *pPlayer )
{
if ( CBasePlayerWeapon::AddToPlayer( pPlayer ) )
{
MESSAGE_BEGIN( MSG_ONE, gmsgWeapPickup, NULL, pPlayer->pev );
WRITE_BYTE( m_iId );
MESSAGE_END();
return TRUE;
}
return FALSE;
}

void CStealth::Spawn( )
{
Precache( );
m_iId = WEAPON_STEALTHSUIT;
SET_MODEL(ENT(pev), "models/w_longjump.mdl");
m_iClip = -1; //no ammo for this, but...

FallInit();// get ready to fall down.
}


void CStealth::Precache( void )
{
PRECACHE_MODEL("models/v_satchel_radio.mdl");
PRECACHE_MODEL ("models/w_longjump.mdl");
PRECACHE_MODEL("models/p_satchel_radio.mdl");

}
int CStealth::GetItemInfo(ItemInfo *p)
{
p->pszName = STRING(pev->classname);
p->pszAmmo1 = NULL;
p->iMaxAmmo1 = -1;
p->pszAmmo2 = NULL;
p->iMaxAmmo2 = -1;
p->iMaxClip = WEAPON_NOCLIP;
p->iSlot = 0;
p->iPosition = 1;
p->iId = WEAPON_STEALTHSUIT;
p->iWeight = CROWBAR_WEIGHT;
return 1;
} //im lazy just use some other weapons code the crowbar wont miss it



BOOL CStealth::Deploy( )
{
cloaked=0;
return DefaultDeploy( "models/v_satchel_radio.mdl", "models/p_satchel_radio.mdl", SATCHEL_RADIO_DRAW, "satchel" );

}

void CStealth::Holster( )
{
m_pPlayer->m_flNextAttack = gpGlobals->time + 0.5;
if (cloaked)
{
cloak= 255;
UnCloak();
}

SendWeaponAnim( SATCHEL_RADIO_HOLSTER );
}

void CStealth::PrimaryAttack()
{
m_flNextPrimaryAttack = gpGlobals->time + 2;
if (!(cloaked))
{
cloak=18;
ClientPrint(m_pPlayer->pev, HUD_PRINTCENTER, "Cloaking...");
Cloak();
UTIL_ScreenFade( m_pPlayer, Vector(15,15,255), 1, 0.5, 128, FFADE_OUT |
FFADE_STAYOUT);
ClientPrint(m_pPlayer->pev, HUD_PRINTCENTER, "You are now invisible!");
}
else
{
flSpeed = m_pPlayer->pev->velocity.Length(); //get players speed
cloak = (flSpeed + 6) * 3;
m_pPlayer->pev->renderamt = cloak;
}

SendWeaponAnim( SATCHEL_RADIO_FIRE );

}

void CStealth::SecondaryAttack()
{
m_flNextSecondaryAttack = gpGlobals->time + 2;
if (!(cloaked))
{
return;
}
else
{
ClientPrint(m_pPlayer->pev, HUD_PRINTCENTER, "Uncloaking...");
cloak=255;
UnCloak();
UTIL_ScreenFade( m_pPlayer, Vector(15,15,255), 0.01, 0.5, 128, FFADE_IN);
ClientPrint(m_pPlayer->pev, HUD_PRINTCENTER, "You are now visible!");
}
SendWeaponAnim( SATCHEL_RADIO_FIRE );

}

void CStealth::Cloak()
{
//Put the cloaking stuff here
m_pPlayer->pev->renderamt = cloak;
m_pPlayer->pev->rendermode = kRenderTransAlpha;
//This lets you see thought them
cloaked=1;
return;
}

void CStealth::UnCloak()
{
//Uncloaking here
m_pPlayer->pev->renderamt = cloak; //Return them to normal values
m_pPlayer->pev->renderfx = kRenderFxNone;
m_pPlayer->pev->rendermode = kRenderNormal;
cloaked=0;
return;
}

void CStealth::WeaponIdle()
{
flSpeed = m_pPlayer->pev->velocity.Length(); //get players speed
if (cloaked)
{
if(!(m_pPlayer->pev->button & (IN_MOVELEFT|IN_MOVERIGHT|IN_FORWARD|IN_BACK|IN_JUMP)))
{ //test to see if you are moving left/right/forward/back/jump
cloak=18;
m_pPlayer->pev->renderamt = cloak;
}
else
{
cloak = (flSpeed + 6)*3;
m_pPlayer->pev->renderamt = cloak;
//this is so you gain visibility while moving
}
}
else
{
cloak=255;
m_pPlayer->pev->renderamt = cloak;
}

}
/////////////end of copy and paste///////////

Wow!

Remember to define the weapon in weapon.h and weapon.cpp.

Weapon.h

#define WEAPON_STEALTHSUIT 16

Weapon.cpp

UTIL_PrecacheOtherWeapon("weapon_stealthsuit")

Get your Stealthsuit by typing /give weapon_stealthsuit in the console.

*Extra Credit*

Make the stealthsuit take battery power.
Old in GREEN.
New in CYAN.

Lets add a new line in Cloak()

//Put the cloaking stuff here
if (m_pPlayer->pev->armorvalue <= 3)
{
ClientPrint(m_pPlayer->pev, HUD_PRINTCENTER, "You cannot cloak due\n to low battery power\n");
return;
}
else
{
m_pPlayer->pev->armorvalue -= 2; //takes more battery power to turn on than off
}
m_pPlayer->pev->renderamt = cloak;

Then in UnCloak()

//Uncloaking here
m_pPlayer->pev->armorvalue -= 1;
m_pPlayer->pev->renderamt = cloak;

Finally in WeaponIdle()

if (m_pPlayer->pev->armorvalue <= 2)
{
Uncloak()
}

flSpeed = m_pPlayer->pev->velocity.Length(); //get players speed

Now you may say that this should check to make sure your cloaked before you subtract the battery power, but I thought not checking made it feel real. (Hmmm, stealthsuits arent real are they?)
 

Any questions or suggestions should be sent to me: venturis52@hotmail.com