[ RESEOLVED ] Renp'y Classes / Game objects

[Thundy]

Hey Everyone.

I'm still learning renpy and my background is mainly c#, c++ and back in the day when they were still relevant Pascal and Basic.

Im trying to work out if object oriented programming is possible in renpy as all the guides that I've seen for some of the things I want to code seem to use nested arrays which to me seems like messy coding.

Is it possible to define a class in Renpy in the same way that I would do in another language and then instantiate it? for example if I wanted to define an NPC in another compiler all i would do is define the NPC class with a set of properties such as level, Hit points, attack power and then just instantiate it for every npc I cant work out how to do that in renpy,

any help would be greatly appreciated

[philat]

Sure. It's all python. General example: viewtopic.php?f=51&t=44730

[Thundy]

awesome thanks

[Thundy]

[Deleted]

[Thundy]

Ok so it turns out my array wasnt working properly. THe code was compiling but threw an exception later on

here is the code im trying to make work

Code: Select all

   python:
        class quest(object):
            def __init__(self, title, description, isActive, isComplete):
                self.title = title
                self.description = description
                self.isActive = isActive
                self.isComplete = isComplete
                
    $ goals[50] = quest('','', False, False)
                
    $ goals[1].title ="No place like home"
    $ goals[1].descrtiption="Find somewhere for your family to live"
    $ goals[1].isActive=True
    $ goals[1].isComplete=False

and then accessing it

Code: Select all

                    for i in goals:
                        if goals[i].isActive:
                            if goals[quest].isComplete:
                                text "{alpha=0.2}[goals[i].title]{vspace=12}[goals[i].description]{/alpha}{vspace=25}"
                            else:
                                text "[goals[i].title]{vspace=12}[goals[i].description]{vspace=25}"

Ive removed most of the text formatting to make it easier to read

[Remix]

if goals[quest].isComplete:

I think you wanted goals[ i ] there, especially as quest is a mutable class object so cannot be a dictionary key... unless you have also defined quest as a variable name, which would not be an advised route

Personally, rather than using goals[ i ] all over the place, maybe

for q in goals.values(): # or goals.items() ... if goals is a dictionary (which I presume from the goals[ i ] bits)
or
for i,q in enumerate( goals ): # i = index, q = value (aka a quest object)... this is if goals is a list and not a dict

Also remember/note: dictionary keys are unsorted... for i in goals is not guaranteed to return them in the same order each time

Hard to say more without seeing more code

[Thundy]

{Deleted}

[Thundy]

So my new declaration is as follows

Code: Select all

python:
        class quest(object):
            def __init__(self, title, description, isActive, isComplete):
                self.title = title
                self.description = description
                self.isActive = isActive
                self.isComplete = isComplete
                
        goals = [ ]
        
        goals.append(quest("No place like home", "Find somewhere for your family to live", True, False))

Which works. I was being a bonehead with my array declaration. I can now just add quests to the array but the function that reads them is throwing up an exception about indices needing to be integer and not unicode.

Code: Select all

for i,q in enumerate(goals):
                        if goals[i].isActive:
                            if goals[i].isComplete:
                                text "[goals[i].title]{vspace=12}[goals[i].description]"
                            else:
                                text "[goals[i].title][goals[i].description]"

the exception is in the text lines

[Thundy]

OK sorry for bumping my own thread but i solved my issue

The solution was simple enough, it was mostly me being stupid

the working code is as follows. please feel free to use it you stumbled on this trying to figure it out

Code: Select all

   python:
        class quest(object):
            def __init__(self, title, description, isActive, isComplete):
                self.title = title
                self.description = description
                self.isActive = isActive
                self.isComplete = isComplete
                
        goals = [ ]
        
        goals.append(quest("No place like home", "Find somewhere for your family to live", True, True))
                

and then

Code: Select all

                    for i,q in enumerate(goals):
                        if q.isActive:
                            if q.isComplete:
                                text "[q.title]{vspace=12}[q.description]{vspace=25}"
                            else:
                                text "[q.title]{vspace=12}[q.description]{vspace=25}"

obviously text formatting will be used to make the completed quest look different from the uncompleted one.

[Milkymalk]

Glad you figured it out!

My advice is to say goodbye to the word "array". Like you, I came from Basic and Pascal and this word as well as "record" (shudder) kept me from understanding data structured in Python.

There are no arrays, there are only lists.
And dictionaries, And tuples. And sets.

Lists basically work like arrays, but they bring their own methods to manipulate them. Also, arrays in Basic and Pascal need to be declared and have a fixed length. A list is the most flexible way to store data that I have ever seen.

Also, make it a habit to capitalize class names, it's how it's usually done. That way you and everybody who reads your code will know that "Quest" is the class name and "quest" is just one instance of that class (if you decide to do "quest = Quest()").

You don't need to enumerate if you never use that number. Just do:

Code: Select all

for q in goals:

[Thundy]

Thanks Milky. Sorry for the slow reply. life etc