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Limit update frequency. #15

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Limit update frequency. #15

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16 changes: 15 additions & 1 deletion bird12/main.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,10 @@ function love.load()

-- initialize mouse input table
love.mouse.buttonsPressed = {}

-- limit framerate
min_dt = 1/60
next_time = love.timer.getTime() + min_dt
end

function love.resize(w, h)
Expand Down Expand Up @@ -155,6 +159,15 @@ function love.mouse.wasPressed(button)
end

function love.update(dt)
local cur_time = love.timer.getTime()
if cur_time < next_time then
return
end
next_time = cur_time + min_dt
if dt < min_dt then
dt = min_dt
end

if scrolling then
backgroundScroll = (backgroundScroll + BACKGROUND_SCROLL_SPEED * dt) % BACKGROUND_LOOPING_POINT
groundScroll = (groundScroll + GROUND_SCROLL_SPEED * dt) % VIRTUAL_WIDTH
Expand All @@ -167,11 +180,12 @@ function love.update(dt)
end

function love.draw()

push:start()

love.graphics.draw(background, -backgroundScroll, 0)
gStateMachine:render()
love.graphics.draw(ground, -groundScroll, VIRTUAL_HEIGHT - 16)

push:finish()
end
end