How would I create spawnable objects in love2d without using OOP?

[MaxGamz]

I'm having trouble understanding metatables and created multiple instances of the same object with them. For example spawning an enemy or collectables like coins. Is there an easier method of doing so in lua?

[BrotSagtMist]

Metatable spawing works like this:

Code: Select all

base={a=1,b=2,c=3,d=4}
meta={__index=function(tab,name) return base[name] end}

object1=setmetatable({a=99,c=5656},meta)
object2=setmetatable({l=0,d=1},meta)
object3=setmetatable({c="nope"},meta)

for k,v in pairs(base) do
 print("key:",k,"value:",v)
 print(object1[k]) 
 print(object2[k]) 
 print(object3[k]) 
end

[dusoft]

I'm having trouble understanding metatables and created multiple instances of the same object with them. For example spawning an enemy or collectables like coins. Is there an easier method of doing so in lua?

Just forget metatables and use arrays / objects?

Code: Select all

enemies={}
function create_enemies(no)
    for i = 1, #no do
       enemies[i] = {
            type='jumping_carp',
            health=10
        }
    end
end

You will have to loop over enemies object in both update() and draw().

[MaxGamz]

Metatable spawing works like this:

Code: Select all

base={a=1,b=2,c=3,d=4}
meta={__index=function(tab,name) return base[name] end}

object1=setmetatable({a=99,c=5656},meta)
object2=setmetatable({l=0,d=1},meta)
object3=setmetatable({c="nope"},meta)

for k,v in pairs(base) do
 print("key:",k,"value:",v)
 print(object1[k]) 
 print(object2[k]) 
 print(object3[k]) 
end

Will this also work for updating animations and other information?

[MaxGamz]

I'm having trouble understanding metatables and created multiple instances of the same object with them. For example spawning an enemy or collectables like coins. Is there an easier method of doing so in lua?

Just forget metatables and use arrays / objects?

Code: Select all

enemies={}
function create_enemies(no)
    for i = 1, #no do
       enemies[i] = {
            type='jumping_carp',
            health=10
        }
    end
end

You will have to loop over enemies object in both update() and draw().

Can I also add other parameters like location?

[dusoft]

Sure, you can add any parameters, completely up to you. You can also change or remove any or add callbacks to functions.

See also this tutorial: https://videlais.com/2018/11/03/learnin ... d-looping/