Half-life1 Coding: 4digits on HUD and 9999 ammo on clip tutorial

first read the first tutorial, as the half of this is the same as the other but over SelAmmo data, is very recomendable to implement it

Start using the "find" function and look for "SelAmmo" in the Entire Solution
in player.cpp we need to edit the info inside the function LinkUserMessages

we need to change that 3 to a -1

then the message information inside CBasePlayer::RemoveAllItems

we change that bye by a short

and at last the message information inside CBasePlayer::Killed

and again

next in the list you should have weapon.cpp
we need to go inside the function CBasePlayerWeapon::UpdateClientData and find

we change that again for a short

and at last we open ammo.cpp
and inside CHudAmmo::MsgFunc_CurWeapon
we find

we change the read_byte to read_short

we that we can have 999 of ammo in the clip of the gun

now lets add more digits to the HUD

first lets opend hud.h and at the top find that constant definition

then we add our new one for the new 4digits HUD

now open hud_redraw.cpp and go to the very bottom of the file and find
inside the CHud::GetNumWidth and we add this if statment

in the same function go down find this

and edit it to look like this

now open hud_redraw.cpp and find the function CHud :: DrawHudNumber
this function is the one that arrange the numbers in positions in the hud
we need to change this line, this line trys to take the third digit of the number and put the correct HUD number, but as we are going to
add a 4th digit for the numbers we need to change this line

now this will make the third digit to not have a problem when we add the 4th digit

now we add the fourth digit on top

inside the same function in the bottom we find this chunk of code for the spacing of the digits

we need to ADD another one for our 4th digit(WE DO NOT REMOVE ANYTHING HERE)

done with hud_redraw.cpp now we can use 4th digits on hud(for health,armor, ammo, and weapona ammo)

at this point I recommend you again to have implemented the first tutorial for increasing the AMMO type capacity

so we open ammo.cpp, find the function int CHudAmmo::Draw(float flTime)
inside of it we need to find all the x = gHUD.DrawHudNumber() and change one of the variable inside of this

we need to change the old DHN_3DIGITS to out new DHN_4DIGITS

we do the same with this 2 more inside the function (look for the valve comment "GL Seems to need this" if you are confuse)

we change those to this

and one more inside if ((pw->iAmmo2Type != 0) && (gWR.CountAmmo(pw->iAmmo2Type) > 0)) {

now with that change you can have up to 9999 of ammo in the weapon magazine and be displayed on HUD + all the HUD stuff that use numbers
(armor,health) can be modified to use 4digits

one more thing if you did the first tutorial and now this you should change from player.cpp a line from the first tutorial
inside CBasePlayer::SendAmmoUpdate
the line WRITE_SHORT ( max( min( m_rgAmmo[i], 999 ), 0 ) );
should be even extended to have 9999 as max number of ammo sent to the client

then you can go to weapon.h and modify the capacity of ammo and magazine

and if everything goes well you can have this

I dont think we need that much ammo to end half-life1