Ren'Py #11 Using Classes

[@phoenixofthegraveyard]

You are awesome. This is the clearest example I've seen of someone explaining classes step by step and how versatile they are. Thank you!

[@GameDeveloperTraining]

Glad it was helpful!

[@paulschaaf8880]

Thank you for a great explanation on a confusing subject. It took me awhile to get the hang of it but after a little tweaking I managed to get a calendar/clock modeled after yours working as well as a class system for stats, nicknames, traits, skills, inventory, upgrades, etc. Much nicer way to organize things than having hundreds of loose variables to keep track of.

[@GameDeveloperTraining]

Glad it was helpful!

[@maverick_nyaa]

Can you declare the list of months first and then create the calendar object without pasting the entire list as the parameters? @11:24

[@adamcelej5371]

Yes, it is possible

[@spectre_tea]

why do we have to inherit created class from class object? usually it isn't done in native Python also what's the point of writing "@property" before functions of a calendar?

[@gapedandamazed6988]

Well I tried without it. It just gave me the object place in memory instead of the calendar

[@aykonsilvers]

I appear to be stuck here. I did everything exactly as the tutorial said, but when I load up the game and open Developer console. I type "print Calendar.Output" and get a response that name 'Calendar' is not defined. and it calls out an error in py_exec. Any idea how this went wrong? TIA.

[@GameDeveloperTraining]

Calendar is the name of the class, you need to reference the instance of the class which is calendar with no capital

[@nicolauscahyadi140]

Thank you for explanation. I have a question, I'm currently making class which it can store objects, but I want call it in different files. for example, I create class in file A, and I want call it in file B for storing object. it's that possible? or it should same file? Thank you.

[@GameDeveloperTraining]

You can define a class in a separate file. Ren'Py treats all your .rpy files as if they were one file.

[@Aniknk]

Yes! After an hour I did it right! Now I have useless calendar.

[@likopinina6803]

well the point wasn't really the calendar, but figuring out how classes work, so you can use them for other stuff

[@GameDeveloperTraining]

Precisely. You would think the name of the video would give that away.

[@madsixvines4839]

But what if I want to increase time only when player does something?

[@jamesimrobertson5422]

What's the function of the 'self.Hour = Hour' et al code lines? Are they not implicit given the 'def' property list. and if necessary can they not be automatically generated from the 'def' statement with one click?

[@shinminmetroskyline]

doubt it

[@GameDeveloperTraining]

no

[@briannao1224]

I've been slowly learning thanks to your videos! I have run across an issue though and I can't figure out how to fix it! When I first tried using self. it worked and I had no problems. I don't know if I hit a button or something, but now every time I type self. it doesn't highlight it and doesn't seem to recognize it as anything. I've tried changing my spacing and a whole bunch of other things to fix it, but I can't seem to figure out what's gone wrong! Any advice on what to do would be very helpful!! Thank you for these great videos!!

[@artwitha.g.8955]

I've once ran across a similar problem and it was because my file was a set to python and not ren'"py ( like the file name didnt end in .rpy) so maybe check that ? ( idk im rly clueless too and pretty new to this lmao but hope this helps !)

[@christopherpittaway8902]

i'm very sorry to bother but i'm trying to add a similar function into a project i am working on, only i am adding minutes instead of hours, whenever i call the function to add time it returns none, do you know a way i could try to fix this?

[@GameDeveloperTraining]

without seeing code I wouldn't be able to help. Please don't post code here though, thanks.

[@antoinest-germain9260]

Hi, it is necessary to inherit the class with the object one? If yes, why is it? I'm using python to program several things for many years but don't figure out why should we do this to create a class inside of renpy.

[@GameDeveloperTraining]

Ren'Py is just a Python module. Everything you do in Ren'Py has to be interpreted into Python so it makes more sense to use native Python as much as possible to optimize your code

[@readyloserone9364]

Hey! I know this video is pretty old, but I have a pretty major issue that I’ve come across. Similar to other comments, I can’t seem to figure out how to type “print calendar.Output” into the console. It just gives me a NameError about “calendar not defined”. Do you have any advice on this?

[@GameDeveloperTraining]

There are a number of reasons it might not be working, check for typos, tabbing errors and make sure you are running the console from within the game and not from the main menu.

[@CrunchyFreak]

When I delete the parts from my script file like you have at the end, ingame it displays as [Output] and not the actual information in the events file. I have been trying for 3 hours to work out what I've done wrong and I can't work it out!

[@CrunchyFreak]

hadn't added calendar.Output to the Output! Just worked it out!

[@samygafsi6429]

When declaring the variable calendar as Calendar Class, I face a limit of items I can use. When I'm at the Weekdays, in the middle it goes gray. It's as if there is a limit of items I can use. When I remove one of the months, I get an extra item, so one of the days is no longer grayed out. Here's an example : When I declare the following line : $ calendar = Calendar(["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"], 0, 3, 4, ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat","Sun"]) Anything beyond "Fri" is grayed out (even the rest of the code not just this line). But If I delete any month or the colored week days, "Sat" is green. And If I delete both "Sat" and "Sun", the rest of my code is colored and working again. Any idea how I can solve this ? Or what is the issue exactly ?

[@GameDeveloperTraining]

There is no issue, atom just does that for some reason

[@samygafsi6429]

@@GameDeveloperTraining How can I overcome this ? Any settings to change ?

[@samygafsi6429]

@@GameDeveloperTraining I'm sorry for overwhelming you with questions. But if ATOM keeps doing this, it might present a big limitation on future code. I'm considering making a sandbox game and you can imagine how this is important.

[@GameDeveloperTraining]

@@samygafsi6429 it doesn’t affect your code, just the visual representation of it. You can add code even after it changes colour

[@samygafsi6429]

@@GameDeveloperTraining Thanks for the quick reply. and Kudos on these tutorials, you made Renpy look so approachable and doable. You are doing an amazing job and service to everyone watching the playlist.

[@Az-od3ip]

This is a great video, helped a lot and I thank you that. But I had some problems with some small concepts that you didn't talk about. First, I don't know why, but you can't define your class holder variable outside of labels. If you do, ren'py will not recognize your class as existent. Also, even if you define It inside a label, ren'py will not complain about your class being non-existent anymore but the class properties are inaccessible. The best way to define the class I found was below the class itself, yet I'm still unable to comprehend what kind of weird scope ren'py has. Edit: I did watch almost all of your videos. And I really think you should make a video about scopes.

[@GameDeveloperTraining]

All classes should be defined in the Init Python block. Classes are standard Python code and nothing to do with Ren'Py

[@WingerWind]

Hello! This video may be from four years ago, but I was wondering if anyone could help me with an issue I’ve found. Do keep in mind that I’ve gone through this video three times inspecting every line of code, yet somehow haven’t found anything that doesn’t match GDT’s code. print Calendar.Output NameError: name ‘Calendar’ is not defined Traceback (most recent call last): File “renpy/common/00console.rpy”, line 689, in run renpy.python.py_exec(code) File “/Users/(my full name)/Applications/renpy-7.5.1-sdk/renpy/python.py”, line 1062, in py_exec exec(py_compile(source, ‘exec’), store, locals) File “”, line 1, in NameError: name ‘Calendar’ is not defined I’ve been stuck looking up solutions and finding nothing for several days by now 😅

[@GameDeveloperTraining]

Check your class name uses the same case as where you are referencing it, i.e. check that you are using capital letters correctly.

[@dovedozen]

I owe u my life

[@TheVallin]

Had some issues getting things to work after I decided to customize a bit of the code, python not being my normal scripting language. But I managed to figure it out. Kept getting a ''int' object is not iterable' error. So had, self.TOD[self.TODs] but had to code going self.TOD += TOD insted of the TODs. And forgot to replace Hours in the 'def AddTime(self, Hours):' with TODs. Had to rewatch this vid to find out what I did wrong! Thanks again for making this tutorial!

[@thechaoscabinett]

I swear, I was so frustrated when I got errors you didn't and just decided to not finish the video. I should've just finished it, I was just ahead of you. 😅

[@GameDeveloperTraining]

Mate, this is the problem so many people encounter and they get all angry with me lol. Glad you finished the vid ;)

[@snailandspider9178]

I have a message error for "if self.Days > self.MonthDays[self.Month]:" saying that : " '>' not supported between instances of 'int' and 'str' " but I'm pretty sure I did everything correctly (sorry for misspelling english isn't my first language) Edit : I found out what was the problem but now I have the error "Possible infinite loop" Edit 2 : Now that I have solved the "infinite loop" problem the calendar only start to work at the end of my game

[@GameDeveloperTraining]

Keep working at it, you'll get there.

[@czzrd1370]

Hi, Could you please explain how you solved it... (if you still remember :) )

[@snailandspider9178]

@@czzrd1370 Sorry it's been some time so I don't really remember but I think the problem was that I made a mistake while writting the months or the days