Sorry but it's still pretty jittery for me.Bryant wrote: How does this run on your machines? Jittery? Smooth?
Code: Select all
function love.setUpdateTimestep(ts)
love.updateTimestep = ts
end
function love.run()
math.randomseed( os.time() )
math.random() math.random()
if love.load then love.load(arg) end
local dt = 0
local accumulator = 0
-- Main loop
while true do
-- Process events.
if love.event then
love.event.pump()
for e,a,b,c,d in love.event.poll() do
if e == "quit" then
if not love.quit or not love.quit() then
if love.audio then love.audio.stop() end
return
end
end
love.handlers[e](a,b,c,d)
end
end
-- Update dt for any uses during this timestep of love.timer.getDelta
if love.timer then
love.timer.step()
dt = love.timer.getDelta()
end
local fixedTimestep = love.updateTimestep
if fixedTimestep then
-- see http://gafferongames.com/game-physics/fix-your-timestep
if dt > 0.25 then
dt = 0.25 -- note: max frame time to avoid spiral of death
end
accumulator = accumulator + dt
--_logger:debug("love.run - acc=%f fts=%f", accumulator, fixedTimestep)
while accumulator >= fixedTimestep do
if love.update then love.update(fixedTimestep) end
accumulator = accumulator - fixedTimestep
end
else
-- no fixed timestep in place, so just update
-- will pass 0 if love.timer is disabled
if love.update then love.update(dt) end
end
-- draw
if love.graphics then
love.graphics.clear()
if love.draw then love.draw() end
if love.timer then love.timer.sleep(0.001) end
love.graphics.present()
end
end
endCode: Select all
ship = { x=315, y=526,
prev_x=315, prev_y=526,
view_x=315, view_y=526 }
function love.setUpdateTimestep(ts)
love.updateTimestep = ts
end
function love.run()
math.randomseed( os.time() )
math.random() math.random()
if love.load then love.load(arg) end
local dt = 0
local accumulator = 0
-- Main loop
while true do
-- Process events.
if love.event then
love.event.pump()
for e,a,b,c,d in love.event.poll() do
if e == "quit" then
if not love.quit or not love.quit() then
if love.audio then love.audio.stop() end
return
end
end
love.handlers[e](a,b,c,d)
end
end
-- Update dt for any uses during this timestep of love.timer.getDelta
if love.timer then
love.timer.step()
dt = love.timer.getDelta()
end
local fixedTimestep = love.updateTimestep
if fixedTimestep then
-- see http://gafferongames.com/game-physics/fix-your-timestep
if dt > 0.25 then
dt = 0.25 -- note: max frame time to avoid spiral of death
end
accumulator = accumulator + dt
--_logger:debug("love.run - acc=%f fts=%f", accumulator, fixedTimestep)
while accumulator >= fixedTimestep do
if love.update then love.update(fixedTimestep) end
accumulator = accumulator - fixedTimestep
end
else
-- no fixed timestep in place, so just update
-- will pass 0 if love.timer is disabled
if love.update then love.update(dt) end
end
local alpha = accumulator/fixedTimestep
ship.view_x = ship.x * alpha + ship.prev_x * (1 - alpha)
ship.view_y = ship.y * alpha + ship.prev_y * (1 - alpha)
-- draw
if love.graphics then
love.graphics.clear()
if love.draw then love.draw() end
if love.timer then love.timer.sleep(0.001) end
love.graphics.present()
end
end
end
Yes, that's what I was thinking! But how to do it? Can I have a constantly running update thread that would read the input instantly, update the world by a fixed dt (say 0.01 s) and then sleep until it's time for the next update? The problem is, if you want to have vsync on, then as soon as you draw, you lose control over the main thread until the next screen flip.
Windows can mess with the main thread, hence you can't be sure it isn't the culprit for the mini-stutters i've been seeing in basically -all- löve2d projects i ran on my computer; it literally can't do games like Ori and the Blind Forest or Dust An Elysian Tail not because they'd be too complex, but because this framework will never be able to produce that kind of visual smoothness and regularity with the frame times.KayleMaster wrote: ↑Fri May 11, 2018 8:35 am Why not leave graphics on the main thread and do your logic on a separate 'pseudo-main' thread. GUI will be a bit tricky, but it could work.
