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Bubberstation/code/modules/modular_computers/file_system/computer_file.dm
John Willard edbc7c5622 PDA update (Messenger works while dead, Microwave works, etc). (#80069)
## About The Pull Request

This is an update that touches many more things all at once (compared to
my other PRs) meant to make PDAs in general feel more consistent and not
take away from one of the experiences we want to encourage: interaction
between players.

1. Replaced all checks of a 'pda' with a 'modular pc'. This means
technically (though not done in-game currently) other modpcs can hold an
uplink, and microwaves can charge laptops.
2. Speaking of microwave, they now don't break and require
deconstruction if the cell is removed mid-charge.
3. When a Mod PC is out of power, it will now allow the Messenger to
work (which now also doesn't consume any additional power), if the app
exists on the PC. Here's a video demonstration


https://github.com/tgstation/tgstation/assets/53777086/7ae12f81-a271-49b8-95fa-2ba54d2e2d1f

4. Flashlights can't be turned on while the cell is dead
5. I replaced a bunch of program vars with ``program_flags`` and renamed
``usage_flags`` to ``can_run_on_flags``.
6. Added a debug modPC that has every app installed by default. Mafia
had some issues in the past that were unknown because Mafia wasn't
preinstalled with any tablet so was never in create & destroy nor in any
other unit test. This was just an easy solution I had, but PDAs should
get more in-depth unit tests in the future for running apps n stuff- I
just wanted to make sure no other apps were broken/harddeling.

## Why It's Good For The Game

Currently when a PDA dies, its only use is to reply to PDA messages sent
to you, since you can still reply to them. Instead of just fixing it and
telling players to cope, I thought it would be nice to allow PDA
Messenger to still work, as it is a vital app.
You can call it some emergency power mode or whatever, I don't really
mind the reason behind why it is this way.

When I made cells used more on PDAs, my main goal was to encourage
upgrading your PDA and/or limiting how many apps you use at once, I did
not want this to hit on players who use it as a form of interaction.
This is the best of both worlds, I think.

The rest of the changes is just for modularity, if some downstream wants
to add tablets, phone computers, or whatever the hell else, they can
still get just as far as PDAs should be able to get to, hopefully.

## Changelog

🆑
add: PDAs with a dead power cell are now limited to using their
Messenger app.
fix: Microwaves now stop charging PDAs if the cell was removed
mid-charge.
fix: Microwaves can now charge laptops.
fix: PDA Flashlights can't be turned on while the PDA is dead.
fix: You can now hold a laptop up to a camera (if it has a notekeeper
app installed) like PDAs already could.
/🆑

---------

Co-authored-by: lessthanthree <83487515+lessthnthree@users.noreply.github.com>
2023-12-09 13:05:13 +01:00

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/datum/computer_file
///The name of the internal file shown in file management.
var/filename = "NewFile"
///The type of file format the file is in, placed after filename. PNG, TXT, ect. This would be NewFile.XXX
var/filetype = "XXX"
///How much GQ storage space the file will take to store. Integers only!
var/size = 1
///Whether the file may be deleted. Setting to TRUE prevents deletion/renaming/etc.
var/undeletable = FALSE
///The computer file's personal ID
var/uid
///Static ID to ensure all IDs are unique.
var/static/file_uid = 0
///The modular computer hosting the file.
var/obj/item/modular_computer/computer
///The computer disk hosting the file.
var/obj/item/computer_disk/disk_host
/datum/computer_file/New()
..()
uid = file_uid++
RegisterSignal(src, COMSIG_COMPUTER_FILE_STORE, PROC_REF(on_install))
/datum/computer_file/Destroy(force)
if(computer)
computer = null
if(disk_host)
disk_host = null
return ..()
/**
* Used for special cases where an application
* Requires special circumstances to install on a PC
* Args:
* * potential_host - the ModPC that is attempting to store this file.
*/
/datum/computer_file/proc/can_store_file(obj/item/modular_computer/potential_host)
return TRUE
// Returns independent copy of this file.
/datum/computer_file/proc/clone(rename = FALSE)
var/datum/computer_file/temp = new type
temp.undeletable = undeletable
temp.size = size
if(rename)
temp.filename = filename + "(Copy)"
else
temp.filename = filename
temp.filetype = filetype
return temp
///Called post-installation of an application in a computer, after 'computer' var is set.
/datum/computer_file/proc/on_install(datum/computer_file/source, obj/item/modular_computer/computer_installing)
SIGNAL_HANDLER
computer_installing.stored_files.Add(src)
/**
* Called when examining a modular computer
* Args:
* Source - The tablet that's being examined
* User - Person examining the computer
*
* note: please replace this with signals when hdd's are removed and program's New() already has the tablet set.
*/
/datum/computer_file/proc/on_examine(obj/item/modular_computer/source, mob/user)
return null
/// Called when attacking a tablet with an item, checking if any application uses it. Return TRUE to cancel the attack chain.
/datum/computer_file/proc/application_attackby(obj/item/attacking_item, mob/living/user)
return FALSE
/**
* Implement this when your program has an object that the user can eject.
*
* Examples include ejecting cells AI intellicards.
* Arguments:
* * user - The mob requesting the eject.
* * forced - Whether we are forced to eject everything (usually by the app being deleted)
*/
/datum/computer_file/proc/try_eject(mob/living/user, forced = FALSE)
return FALSE
/**
* Called when a computer program is shut down from the tablet's charge dying
* Arguments:
* * background - Whether the app is running in the background.
*/
/datum/computer_file/program/proc/event_powerfailure()
if(program_flags & PROGRAM_RUNS_WITHOUT_POWER)
return
kill_program()
/**
* Called when a computer program is crashing due to any required connection being shut off.
* Arguments:
* * background - Whether the app is running in the background.
*/
/datum/computer_file/program/proc/event_networkfailure(background)
kill_program()
if(background)
computer.visible_message(span_danger("\The [computer]'s screen displays a \"Process [filename].[filetype] (PID [rand(100,999)]) terminated - Network Error\" error"))
else
computer.visible_message(span_danger("\The [computer]'s screen briefly freezes and then shows \"NETWORK ERROR - NTNet connection lost. Please retry. If problem persists contact your system administrator.\" error."))