Loading Asets Scene Lua SCripts

[Yue]

 

Hi, I was wondering if it is possible to display an animated image while loading a stage using the Lua secript. Is it possible to do that?

[Phodex Games]

Hi, I thought about how to realise this aswell. I never actually did it yet, but as far as I know you need to use the thread functions and then run your code/call your animated picture in there. Correct me if I am wrong. But dont ask me how to put a animated Image into Leadwerks...

[Yue]

Quote

This class is not available in Lua.

[Einlander]

You would need to use the hook parameter in the map load function. Point it to a function that will handle your screen drawing.

[Yue]

12 minutes ago, Einlander said:

Necesitará utilizar el parámetro hook en la función de carga del mapa. Apuntar a una función que se encargará de su dibujo de pantalla.

Sample Please.

[Phodex Games]

Maybe this helps? debug.sethook should work, but in the offical API you just find this and that. Just tried that, debug.sethook, what you find in the offical LUA API also works in Leadwerks. But I dont know how to use the "AddHook" function. You seem to need any kind of keyword in addition. However Leadwerks does not seem to recognice "AddHook" as a keyword. But I think debug.sethook should do the job.

[AggrorJorn]

Drawing a static image before a new scene is loaded is fairly easy. An animation or sprite is a little harder to do.

For a static image

1. Check if 'loadingScreenActive' bool is true in the game loop. By default it is false, so we continue with the game loop
2. Lets say you then press F to load a new scene
3. You set a bool  'startLoading' to true.
4. At the end of the current frame you check for this startLoading variable. If true, draw image and set the loadingScreenActive to true.
5. Then in the next frame update, when we check the value of loadingScreenActive again. This time it is true and you call loadmap. Because the engine is drawing an image on screen and loading the new scene halts the process of updating. 
6. After the loading of the map is done, set the loadingScreenActive variable to false again.

[Yue]

Test My Solution.  Bar Progress Animating.  No work.
'loadingScreenActive'  Where?

ventana = Window:Create()
lienzo  = Context:Create(ventana)

mundo = World:Create()

local x = 0



local mapa = nil

while mapa == nil  do 

	
	
	mapa = Map:Load("Maps/start.map")

	x = x + 1

	lienzo:DrawRect(0,0, x, 50, 0 )


	if x >= 100 then 

		x = 100
	end 

	lienzo:Sync()

end 



while true do


	if ventana:Closed()  or ventana:KeyDown( Key.Escape )then return false end



	mundo:Update()
	mundo:Render()
	lienzo:Sync()




end 

 

[Yue]

Ok, 

This is the most real thing I can do.
 

ventana = Window:Create()
lienzo  = Context:Create(ventana)

mundo = World:Create()

 x = 0



 mapa = 0

function Loading()

	lienzo:DrawText("Loading Map...",lienzo:GetWidth()/2,lienzo:GetHeight()/2+75)
	lienzo:Sync()

end 


while x  <= 200  do 

	


	x = x + 1
		if x == 100 then 

			cargar = true 
		end 


	lienzo:DrawRect(lienzo:GetWidth()/2-50,lienzo:GetHeight()/2-25.5, x, 25, 0 )
	lienzo:DrawRect(lienzo:GetWidth()/2-50,lienzo:GetHeight()/2-25, 200, 26, 1 )

	lienzo:SetBlendMode(Blend.Alpha)
       
        lienzo:DrawText("Loading",lienzo:GetWidth()/2,lienzo:GetHeight()/2+25)

		lienzo:Sync()


		if cargar == true then
			
			
			mapa = Map:Load("Maps/07-AI and Events.map","Loading")
			
			cargar = false
		end 



end 




-- Level 1 Render.

while true do


	if ventana:Closed()  or ventana:KeyDown( Key.Escape )then return false end



	mundo:Update()
	mundo:Render()

lienzo:SetBlendMode(Blend.Alpha)
        lienzo:SetColor(1,0,0)
        lienzo:DrawText("HOLA",0,0)
	
	lienzo:Sync()




end 

 

[Yue]

Ok, run perfect.  Test 2 on Lua.


 

-- Loading Barr Progress Map.
-- Yue Rexie
-- Engine LeadWerks


ventana = Window:Create("Test",0,0, 800,600, Window.Titlebar + Window.Center )
lienzo  = Context:Create( ventana ) 

mundo = World:Create()

local x = 0


co = coroutine.create(function () Map:Load("Maps/07-AI and Events.map") end)


while x <= 200 do

	-- Salir.
	if ventana:Closed() then return false end 
	if ventana:KeyHit(Key.Escape ) then return false end 

	x = x + 1

	if x == 100 then 
		
		coroutine.resume(co)

	end 
	
	 lienzo:DrawRect(lienzo:GetWidth()/2-100, lienzo:GetHeight()-50, x, 25)
	 lienzo:DrawRect(lienzo:GetWidth()/2-100, lienzo:GetHeight()-50,200, 25, 1 )
	 lienzo:Sync()


end 



while true do

	if ventana:Closed() then return false end 
	if ventana:KeyHit(Key.Escape ) then return false end 
	

	mundo:Update()
	mundo:Render()
	lienzo:Sync()

end