on error, switch to a whole other event loop

akkartik

Dec 12, 2024, 5:40 AM

5UNXE4KMGRIKURKCT7O7JZ7QXUWB2MMTJRZJCJ2CVPEDHC237UBAC

Dependencies

• [2] NVEA3SMU reorg
• [3] EZZWF7WP define App.run_frame at the top level
• [4] TBWAE64A app is now live, can communicate with driver
• [5] 5WHW3IDO fix initialization errors using driver.love
• [6] DMS3N5YD undo an ancient hack; be an idiomatic LÖVE app
• [7] 3QNOKBFM beginnings of a test harness
• [8] AVTNUQYR basic test-enabled framework
• [9] DJSIRUMD a more radical attempt at ignoring nil y's
• [10] AGJXIDOF hardcode some assumptions about how this app uses love
• [11] 36Z442IV back to commit 8123959e52f without code editing
• [*] LRDM35CE app running again
• [*] T7QIIGQ6 attempt at better error recovery

Change contents

• edit in live.lua at line 382
  [2.1310]

  [13.9011]
  +

  + local main_run_frame = App.run_frame

  +

  + -- one iteration of the event loop when showing an error

  + -- return nil to continue the event loop, non-nil to quit

  + local error_frame_keys_down = {}

  + function error_run_frame()

  + if love.event then

  + love.event.pump()

  + for name, a,b,c,d,e,f in love.event.poll() do

  + if name == 'quit' then

  + return a or 0

  + elseif name == 'keypressed' then

  + error_frame_keys_down[a] = true

  + -- C-c

  + if a == 'c' and (error_frame_keys_down.lctrl or error_frame_keys_down.rctrl) then

  + love.system.setClipboardText(Error_message)

  + end

  + elseif name == 'keyreleased' then

  + error_frame_keys_down[a] = nil

  + App.run_frame = main_run_frame

  + end

  + end

  + end
• edit in live.lua at line 407
  [13.9012]

  [13.9163]
  + local dt = love.timer.step()

  + Current_time = Current_time + dt

  + live.update(dt)

  +

  + love.graphics.origin()

  + love.graphics.clear(love.graphics.getBackgroundColor())

  + love.graphics.setColor(0,0,1)

  + love.graphics.rectangle('fill', 0,0, App.screen.width, App.screen.height)

  + love.graphics.setColor(1,1,1)

  + love.graphics.printf(Error_message, 40,40, 600)

  + love.graphics.present()

  +

  + love.timer.sleep(0.001)

  +

  + -- returning nil continues the loop

  + end

  +
• edit in live.lua at line 441
  [14.2212]

  [13.10774]
  + App.run_frame = error_run_frame
• edit in app.lua at line 158
  [4.123]→[4.171:186](∅→∅),[4.171]→[4.171:186](∅→∅)
  − local dt = 0
• replacement in app.lua at line 170
  [3.276]→[3.276:303](∅→∅)
  − App.run_frame = function()
  [3.276]

  [3.303]
  + function App.run_frame()
• replacement in app.lua at line 183
  [4.551]→[3.546:571](∅→∅)
  − dt = love.timer.step()
  [4.551]

  [3.571]
  + local dt = love.timer.step()