Passing the physic object as function argument

[kruseborn]

main.lua

local physics = require("physics") local actor = require("actor") physics.start() //here physic is not nil local a = Actor.new(200, 200, physics)

actor.lua

function Actor:new(x, y, physic)    //here physic is nil end 

How come I cant pass the physics object into another module?

[rob]

You are mixking . and : metaphores in calling your function.  When you use a : it implies a parameter of self.  When you call that function using a . the first parameter needs to be the object or the arguments get shifted.  In other words do either:

local a = Actor:new(200, 200, physics)

or

local a = Actor.new(200, 200, physics)

function Actor.new(x, y, physic)
   //here physic should not be nil any longer.
end

Though I’m not sure why your passing physics as a parameter.  When you load a module with require, there is only one copy of it.  If your Actor:new function is in the same module as where you’re calling it, then you can just reference “physics” without passing it.   If your Actor is a different module, just require physics at the top to get a local reference to it.   While it’s not wrong to do what you do, it’s not something lua programmers do because of the way modules are really loaded.

Rob

[kruseborn]

@rob

You are mixking . and : metaphores in calling your function.  When you use a : it implies a parameter of self.  When you call that function using a . the first parameter needs to be the object or the arguments get shifted.  In other words do either:

local a = Actor:new(200, 200, physics)

or

local a = Actor.new(200, 200, physics)

function Actor.new(x, y, physic)
   //here physic should not be nil any longer.
end

Though I’m not sure why your passing physics as a parameter.  When you load a module with require, there is only one copy of it.  If your Actor:new function is in the same module as where you’re calling it, then you can just reference “physics” without passing it.   If your Actor is a different module, just require physics at the top to get a local reference to it.   While it’s not wrong to do what you do, it’s not something lua programmers do because of the way modules are really loaded.

Rob

thank you

[rob]

You are mixking . and : metaphores in calling your function.  When you use a : it implies a parameter of self.  When you call that function using a . the first parameter needs to be the object or the arguments get shifted.  In other words do either:

local a = Actor:new(200, 200, physics)

or

local a = Actor.new(200, 200, physics)

function Actor.new(x, y, physic)
   //here physic should not be nil any longer.
end

Though I’m not sure why your passing physics as a parameter.  When you load a module with require, there is only one copy of it.  If your Actor:new function is in the same module as where you’re calling it, then you can just reference “physics” without passing it.   If your Actor is a different module, just require physics at the top to get a local reference to it.   While it’s not wrong to do what you do, it’s not something lua programmers do because of the way modules are really loaded.

Rob

[kruseborn]

@rob

You are mixking . and : metaphores in calling your function.  When you use a : it implies a parameter of self.  When you call that function using a . the first parameter needs to be the object or the arguments get shifted.  In other words do either:

local a = Actor:new(200, 200, physics)

or

local a = Actor.new(200, 200, physics)

function Actor.new(x, y, physic)
   //here physic should not be nil any longer.
end

Though I’m not sure why your passing physics as a parameter.  When you load a module with require, there is only one copy of it.  If your Actor:new function is in the same module as where you’re calling it, then you can just reference “physics” without passing it.   If your Actor is a different module, just require physics at the top to get a local reference to it.   While it’s not wrong to do what you do, it’s not something lua programmers do because of the way modules are really loaded.

Rob

thank you