I am asking this:
If Ranger has an axe and he finds a sweet chainsaw,he picks it up,right?
But he has to drop the axe to have the saw.

In straightforward language:
How do I make the player replace the axe with another weapon on pickup?

As I mentioned,examples:
In Quoth,when you pick the Warhammer up,you lose the axe.

In Arcane Dimensions,you lose the regular axe when you pick the shadow axe up.Same goes for the SSG to Widowmaker and Thunderbolt to Plasma Gun.

In (whatever has been released) Drake, the chainsaw replaces the axe.
The sword and the axe replace each other on pickup(both have the same stats;only model differs)

Nailgun is replaced by Super Nailgun

Blaster is replaced by Laser Cannon

Weapons bound to the same key are there in an InsideQC tutorial,so I don't need to worry abotu that.Anyway I'm not gonna have multiple weapons on one key. 

self.items is where an entities items are stored.

What you'll want to do is remove the existing (to be upgraded) weapon from the players inventory, and then add the new weapon.

items.qc is where this is handled and item names are defined in defs.qc.

it should be fairly simple to do. 

It is a bit more involved than that.

For a custom warhammer/axe/whatever you will need the following... (using JazzAxe for example)

defs.qc::
•Add a line float IT_JAZZAXE = 128; (assuming ID1, otherwise use next available value)

weapons.qc::
•Add a W_FireJazzAxe function that is a duplicate of W_FireAxe with damage you want instead of 20 and any other special effects you might want
•Above W_Attack add a line "void player_jazzaxe1 ();" without quotes
•Inside W_Attack add an if statement that checks to see if (self.weapon == IT_JAZZAXE) that then goes to player_jazzaxe1 ();

player.qc::
•Copy and paste all 4 functions of player_axe1, player_axe2, player_axe3, player_axe4
•Add "jazz" (without quotes ofc) in front of axe1, axe2, axe3, and axe4 in the function names
•Change W_FireAxe inside player_jazzaxe3 function to be W_FireJazzAxe();

item.qc::
•Copy weapon_nailgun function (or any other weapon), paste, and rename to weapon_jazzaxe
•Change inside weapon_jazzaxe self.weapon to be IT_JAZZAXE, self.netname = "ijazz2's bane";
•Inside weapons_touch add an if (self.classname == "weapon_jazzaxe") new =IT_JAZZAXE;

I probably missed something. 

You forgot W_SetCurrentAmmo?

Anyway,thanks for helping.You probably should changed your username to QCMaster. 

http://www.quaketastic.com/files/screen_shots/Capture.JPG 

you shouldnt need to do any ammo checks with melee weapons, unless you're building a melee weapon that uses ammo, which would be pretty cool too. 

QMaster,I have a problem.
I'm using the AD Shadaxe model for jazzaxe.
FTEQCCGUI compiled without error,but when I try to select the weapon (after picking up) it just switches to the shotgun.The model appears for a split-second then the shotgun appears.I cant use it.

Then I tried (using an InsideQC tut) to make the weapon switchable by selecting axe twice.
Problem is still there.

Help? 

I've ran into that before...might be a conflict with whichever bitflag value you used for IT_JAZZAXE. Can you upload a zip of your qc files? I might be able to take a look at it. 

http://www.quaketastic.com/files/QC%20Mistakes/ijazz3_qc_jazzaxe_screwed.zip

This one has a few changes from standard id1,including the code which seems to be wrong for the Jazz Axe and some AD-inspired health model changes (.bsp to .mdl) 

W_BestWeapon
Add if at the bottom
if (self.items & IT_JAZZAXE) return IT_JAZZAXE; else return IT_AXE;

And just below that in W_CheckNoAmmo:
inside the if (self.weapon == IT_AXE add "|| self.weapon == IT_JAZZAXE") 

Something is not right.

CheckNoAmmo does not have if (self.weapon == IT_AXE) part! 

i'm out of axe ammo! 

float() W_CheckNoAmmo =
{
if (self.currentammo > 0)
return TRUE;

if (self.weapon == IT_AXE)
return TRUE;

self.weapon = W_BestWeapon ();

W_SetCurrentAmmo ();

// drop the weapon down
return FALSE;
};
 

Never mind,found it.FTEQCCGUI has no Atrl+F combo!!! why!!!!! 

QMaster,the problem is still there.
I did some checking but I can't find anything wrong. 

in checknoammo shouldint you also add if(self.weapon == IT_JAZZAXE) return; ? 

otherwise it says you have no ammo jump to SG 

otherwise it says you have no ammo jump to SG 

if ((self.weapon == IT_AXE) || (self.weapon == IT_JAZZAXE))
return TRUE; 

@rook
Yes,I added that.It sill switches to SG after showing JAZZAXE for a split second. 

hmm what about ‘rankforweapon’ function?
im just thinking off the top of my head been awhile since i did the ol double tap
impuls to switch weapons; i had once made the lg
double as a flame thrower
you might need to add your axe there too 

Have you looked at client.qc?

There's a line

if(time > self.attack_finished && self.currentammo == 0 &&
       self.weapon != IT_AXE)
{
   self.weapon = W_BestWeapon ();
   W_SetCurrentAmmo ();
}

I suspect you need to change that last test to also consider IT_JAZZAXE. 

I am sorry.It does not work.Still switching after a second.

I am going to try and hunt down the warpspasm decompiled code I gave someone when I played Quake 2 years ago before going to Half-(my)-Life.

But please,try helping me.I might feature you in my mod. 

What did you change it to? Was it this:

if(time > self.attack_finished && self.currentammo == 0 &&
self.weapon != IT_AXE && self.weapon != IT_JAZZAXE )
 

You have saved me a complete rewrite.
Now,the world shall remember you as the savior of QuakeC.

Go Preach!