Usage of CoronaPrototype and inheritance?

Getting Started Newbie Questions
#1

Hello,

Currently I’m using CoronaPrototype to make classes as follow:

local Prototype = require("CoronaPrototype") local MyClass = Prototype:newClass("MyClass") function MyClass:initialize(params) ... --usage: local obj = MyClass:new({name = "Bob"})

I understand that I could inherit from MyClass in following way:

local SecondClass = MyClass:newClass("Second") function SecondClass:initialize(params)

But I noticed that when I do MyClass:newClass call initialize function from MyClass get called (with nil params)

So should I handle params == nil and skip initialization? (in example above I want to set self.name = params.name, so params should always be passed)

Also documentation for CoronaPrototype is pretty brief. Does anybody using this or some other library for OOP?

#2

My favorite solution is 30Log: https://github.com/Yonaba/30log

#3

I’ve been playing around with Lua Class Library - OOP for Lua made easy which seems very promising.

#4

$14.95 for functionality which you can get for free looks weird

#5

The $15 must be for training materials and perhaps the authors implementation of an OOP solution.

Seems reasonable to charge for one’s labor to me.

#6

@roaminggamer - Yeah, I was happy to pay $15 simply to see how they solved problems and structured their code for OOP.  It will definitely save me $15 worth of time and I’m always happy to support lua/Corona innovators.  Speaking of which Ed, I think I’ve purchased everything you have ever offered for sale and it’s always been worth a few bucks to see how someone else solved a problem and to not have to reinvent the wheel again and again, so thanks!

#7

Does anybody using this or some other library for OOP?

If you’ve not done so, read the OOP chapter in Programming in Lua.

Something that went up a few hours ago, from the Legend of Grimrock programmer: Object decomposition in Druidstone (If you find this approach interesting, see also Evolve Your Hierarchy)

#8

Thanks @StarCrunch.

Yes, I decided not to use inheritance and use components instead.

But I’m still curious about CoronaPrototype - seems like nobody used it. Why it was implemented in engine, does it have any difference from other oop libraries? Hope some of engine developers can answer this

#9

My favorite solution is 30Log: https://github.com/Yonaba/30log

#10

I’ve been playing around with Lua Class Library - OOP for Lua made easy which seems very promising.

#11

$14.95 for functionality which you can get for free looks weird

#12

The $15 must be for training materials and perhaps the authors implementation of an OOP solution.

Seems reasonable to charge for one’s labor to me.

#13

@roaminggamer - Yeah, I was happy to pay $15 simply to see how they solved problems and structured their code for OOP.  It will definitely save me $15 worth of time and I’m always happy to support lua/Corona innovators.  Speaking of which Ed, I think I’ve purchased everything you have ever offered for sale and it’s always been worth a few bucks to see how someone else solved a problem and to not have to reinvent the wheel again and again, so thanks!

#14

Does anybody using this or some other library for OOP?

If you’ve not done so, read the OOP chapter in Programming in Lua.

Something that went up a few hours ago, from the Legend of Grimrock programmer: Object decomposition in Druidstone (If you find this approach interesting, see also Evolve Your Hierarchy)

#15

Thanks @StarCrunch.

Yes, I decided not to use inheritance and use components instead.

But I’m still curious about CoronaPrototype - seems like nobody used it. Why it was implemented in engine, does it have any difference from other oop libraries? Hope some of engine developers can answer this