Lag.

[baconhawka7x]

I noticed if i leave my Love 2d game running for too long the frame rate drops insanely. i'm guessing that it is because of how i organize things? any and all tips will help!

This is my main.lua

Code: Select all

function love.load()
	love.graphics.setBackgroundColor(255, 255, 255)	
	
	character = love.graphics.newImage("character.png")
	
	x = 200
	y = 200

end
function love.update(dt)

end
function love.draw()
	love.graphics.setFont(54)
	love.graphics.setColor(0, 255, 255)
	love.graphics.print("Start!:D", 5, 240)
end
function love.mousepressed(x,y)
	if x > 5 and
	x < 400 and
	y > 240 and
	y < 400 then require "lvl1/data001.lua"
	end
end

This is my ".lua" for my first level

Code: Select all

function love.update(dt)
	if love.keyboard.isDown("w") then
		y = y - 5
	elseif love.keyboard.isDown("s") then
		y = y + 5
	end
	if love.keyboard.isDown("a") then
		x = x - 5
	elseif love.keyboard.isDown("d") then
		x = x + 5
	end
	if x < 0 then
		x = 799
	end
	if y > 600 then
		y = 0
	end
	if y < 0 then
		y = 599
	end
	if x > 800 then
		require "lvl1/data002.lua"
	end	
end
function love.draw()
	love.graphics.setBackgroundColor(255, 255, 255)
	
	love.graphics.setColor(255, 255, 255)
	love.graphics.draw(character, x, y)
	
	love.graphics.setFont(58)
	love.graphics.setColor(0, 255, 255)
	love.graphics.print("Use WASD To Move!:D", 10, 5)
	
end

it is a top-view shooter, very simple. im pretty new! please help!

[Ellohir]

If you posted your .love we could take a look at it. Otherwise we can't know. Maybe you constantly create things and don't clean unused memory?

[TechnoCat]

using setFont(number) in the draw callback is going to instantiate a new font every frame. Memory leak!

[bartbes]

Code: Select all

function love.draw()
-- stuff
	love.graphics.setFont(58)

NEVER DO THIS!
That can't be stressed enough, you're loading and creating fonts every single frame.

[baconhawka7x]

Ok so how do I NOT load the font every frame?

[thelinx]

Code: Select all

function love.load()
  bigfont = love.graphics.newFont(58)
end

function love.draw()
  love.graphics.setFont(bigfont)
end

[baconhawka7x]

Code: Select all

function love.load()
  bigfont = love.graphics.newFont(58)
end

function love.draw()
  love.graphics.setFont(bigfont)
end

thank you so much!:D is that the only thing that is making it lag?

[Jasoco]

Probably. It takes a lot of processing to create the font. You don't notice it when you load because it does it once. But if you call it every frame, that time adds up and increases memory usage. It's a common newbie mistake actually so don't feel bad. Most of us have done it the first time too.

[kikito]

I've just created an issue requesting the removal of love.graphics.setFont(number).

[thelinx]

That's a stupid "solution".