[Solved] Possible to change render script at runtime?

RisingSunStudios · December 21, 2023, 10:54am

Hi all,

I understand I can configure a render script at runtime by sending messages to it, but is it possible to change the active render script at runtime? If not, this would be a pretty cool feature. Monolith render scripts could be neatly broken out into more specialized scripts and help keep projects tidy.

For example, I’d like to have super-simple render scripts for my menus and front-end and a much more complex script for my game screens.

Mathias_Westerdahl · December 21, 2023, 10:50am

You can use a top render script and use lua modules with different functionality.

RisingSunStudios · December 21, 2023, 10:54am

Ah good point. Can simply forward the update and on_message to the modules. Why didn’t I think of that first?

Thanks =)

britzl · December 22, 2023, 9:51am

I created a helper project for this kind of functionality. Nothing fancy, but it helps a bit: https://github.com/britzl/easel

RisingSunStudios · December 22, 2023, 10:04am

Oh perfect, that looks useful!

iotaHum · December 22, 2023, 11:37am

In programs/predicate.lua there is a redundant loop?

github.com

britzl/easel/blob/main/easel/predicate.lua#L13

    
      
          
          
local predicates = {}
          
          

          

          
-- create a predicate
          -- this will cache the predicate and return the same one if requested more than
          -- once
          function M.create(tags)
          	for i,tag in ipairs(tags) do
          		tag = type(tag) == "string" and hash(tag) or tag
          	end
          
          
	for _,predicate in ipairs(predicates) do
          		local found_predicate = true
          		for _,tag in ipairs(tags) do
          			if not predicate.tags_lut[tag] then
          				found_predicate = false
          				break
          			end
          		end

The loop sets the local variable ‘tag’. This then goes out of scope.

edit: should it be: tags(tag)

britzl · December 22, 2023, 7:02pm

Ah, yes that is indeed a bug. The purpose is to ensure that the tags are hashes. Could you please either report a bug or submit a pr.