Implement SWEP FiresUnderwater method

lua/weapons/bobs_gun_base.lua

@@ -401,6 +401,7 @@ end
 
 function SWEP:PrimaryAttack()
     if not self:CanPrimaryAttack() then return end
+    if self:CheckWater() then return end
 
     local owner = entity_GetOwner(self)
 
@@ -444,6 +445,16 @@ function SWEP:CheckWeaponsAndAmmo()
     end
 end
 
+function SWEP:CheckWater()
+    if entity_GetOwner(self):WaterLevel() == 3 and not self.FiresUnderwater then
+        self:SetNextPrimaryFire( CurTime() + 0.2 )
+        self:EmitSound( "Weapon_Pistol.Empty" )
+        return true
+    end
+
+    return false
+end
+
 --[[---------------------------------------------------------
    Name: SWEP:ShootBulletInformation()
    Desc: This func add the damage, the recoil, the number of shots and the cone on the bullet.

lua/weapons/m9k_an94.lua

@@ -91,6 +91,8 @@ end
 SWEP.Primary.PrevShots = SWEP.Primary.NumShots
 
 function SWEP:PrimaryAttack()
+    if self:CheckWater() then return end
+
     local owner = self:GetOwner()
 
     if self:CanPrimaryAttack() and owner:IsPlayer() then

lua/weapons/m9k_contender.lua

@@ -70,6 +70,7 @@ function SWEP:PrimaryAttack()
     local owner = self:GetOwner()
 
     if owner:IsNPC() then return end
+    if self:CheckWater() then return end
     if not self:CanPrimaryAttack() then return end
     if owner:KeyDown( IN_SPEED ) then return end
 

lua/weapons/m9k_dbarrel.lua

@@ -68,7 +68,8 @@ cvars.AddChangeCallback( "M9KDamageMultiplier", dmgMultCallback, "dbarrel" )
 
 function SWEP:SecondaryAttack()
     if not self:CanPrimaryAttack() then return end
-
+    if self:CheckWater() then return end
+
     local owner = self:GetOwner()
 
     local timerName = "ShotgunReload_" .. owner:UniqueID()
@@ -107,6 +108,7 @@ end
 
 function SWEP:PrimaryAttack()
     if not self:CanPrimaryAttack() then return end
+    if self:CheckWater() then return end
 
     local owner = self:GetOwner()