bind "1" ""
bind "2" ""
bind "3" ""

bind "MOUSE1" "+scattergun"
bind "MOUSE2" "+pistol"
bind "MOUSE3" "+melee"

alias "+scattergun" "slot1; +attack; alias checkScatter scatterOn"
alias "-scattergun" "-attack; checkPistol; checkMelee; alias checkScatter"

alias "+pistol" "slot2; +attack; alias checkPistol pistolOn"
alias "-pistol" "-attack; checkScatter; checkMelee; alias checkPistol"

alias "+melee" "slot3; +attack; +attack2; alias checkMelee meleeOn"
alias "-melee" "-attack; -attack2; checkScatter; checkPistol; alias checkMelee"

alias "checkScatter" ""
alias "checkPistol" ""
alias "checkMelee" ""

alias "scatterOn" "+attack; slot1"
alias "pistolOn" "+attack; slot2"
alias "meleeOn" "+attack; slot3"

I created a script that allows you to switch to, and fire either your primary, secondary, or melee weapon using solely your left-click, right-click, or scroll-wheel-click respectively.

It's different from existing scripts, I swear. I'll try and explain it as best I can in this post.

By pressing and holding any of these buttons, the appropriate weapon will be switched to, and will start firing while the button is held. Briefly tapping the button corresponding to a weapon other than the one that is currently out will switch your weapon without firing.

[b]What makes this script so EPIC! and ADVANCED!??[/b]

Unlike other simple weapon switchers, (which simply bind the slot-change command in addition to the +attack command) this script allows for null-cancelling mouse clicks, and remembers buttons that are held down after a different button is briefly used.

No more using your number keys to switch weapons! That means you can now spam wasd unimpeded.

[i]This script is intended for scout, but could be adapted for usage with other classes, depending on if their weapons have an alt-fire.
[/i]

The script works with the sandman and the wrap-assassin, firing the ball when the melee button is pressed.

[b]The script, and its installation directions in plaintext are located here:[/b]
https://raw.githubusercontent.com/Sveniveniven/tf2-scripts-cfg/main/mouse_prim_sec_melee.cfg

[b]Github Page:[/b]
https://github.com/Sveniveniven/tf2-scripts-cfg/blob/main/mouse_prim_sec_melee.cfg

[b]Raw Script (You will need to update your class-specific configs for it to turn on/off correctly!),[/b]
[code]
bind "1" ""
bind "2" ""
bind "3" ""

bind "MOUSE1" "+scattergun"
bind "MOUSE2" "+pistol"
bind "MOUSE3" "+melee"

alias "+scattergun" "slot1; +attack; alias checkScatter scatterOn"
alias "-scattergun" "-attack; checkPistol; checkMelee; alias checkScatter"

alias "+pistol" "slot2; +attack; alias checkPistol pistolOn"
alias "-pistol" "-attack; checkScatter; checkMelee; alias checkPistol"

alias "+melee" "slot3; +attack; +attack2; alias checkMelee meleeOn"
alias "-melee" "-attack; -attack2; checkScatter; checkPistol; alias checkMelee"

alias "checkScatter" ""
alias "checkPistol" ""
alias "checkMelee" ""

alias "scatterOn" "+attack; slot1"
alias "pistolOn" "+attack; slot2"
alias "meleeOn" "+attack; slot3"
[/code]

Lemme know if you run into any issues, or have any ideas for it.
Also if this already exists (with the null-cancelling stuff), then I'm angry