HL2 Remplacing grenadelauncher by subshotgun tutorial

Open weapon_smg1.cpp

before this line

extern ConVar    sk_plr_dmg_smg1_grenade;	

add

extern ConVar	 sk_plr_num_shotgun_pellets;

you can create other variable if you want star something more serious, but for a simple mod is ok!
Now we go to the secondary attack, and found this:

	//Create the grenade
	QAngle angles;
	VectorAngles( vecThrow, angles );
	CGrenadeAR2 *pGrenade = (CGrenadeAR2*)Create( "grenade_ar2", vecSrc, angles, pPlayer );
	pGrenade->SetAbsVelocity( vecThrow );

	pGrenade->SetLocalAngularVelocity( RandomAngle( -400, 400 ) );
	pGrenade->SetMoveType( MOVETYPE_FLYGRAVITY, MOVECOLLIDE_FLY_BOUNCE ); 
	pGrenade->SetThrower( GetOwner() );
	pGrenade->SetDamage( sk_plr_dmg_smg1_grenade.GetFloat() );

we need to comment this code, no more no less than this code...
and bellow that we add this:

	Vector	vecAiming	= pPlayer->GetAutoaimVector( AUTOAIM_SCALE_DEFAULT );	

	pPlayer->SetMuzzleFlashTime( gpGlobals->curtime + 1.0 );
	
	// Fire the bullets, and force the first shot to be perfectly accuracy
	pPlayer->FireBullets( sk_plr_num_shotgun_pellets.GetInt(), vecSrc, vecAiming, GetBulletSpread(), MAX_TRACE_LENGTH, m_iSecondaryAmmoType, 0, -1, -1, 0, NULL, true, true );
	
	pPlayer->ViewPunch( QAngle( random->RandomFloat( -2, -1 ), random->RandomFloat( -2, 2 ), 0 ) );

Ok thats all in .cpp (actually you can comment more code about the grenade, wich will be useless, but you will no had compilation problems.
now we need to edit our weapon_smg1.cfg in ours mod folder/script
you must replace:

	"clip2_size"			"-1"

by

	"clip2_size"			"1"

and replace

	"secondary_ammo"		"SMG1_Grenade"

by

"secondary_ammo"		"Buckshot"

And at last if you want you can change the sound of the shot, but the grenadelauncher sounds isnt bad for me. Anyway find this line

"double_shot"		"Weapon_SMG1.Double"

and replace by

"double_shot"		"Weapon_Shotgun.Single"

well compile and check! if theres some bug PM me!

Good luck