Merge template-live-editor

app.lua

@@ -11,6 +11,7 @@
 --
 -- Scroll below this function for more details.
 function love.run()
+  App.version_check()
   App.snapshot_love()
   -- have LÖVE delegate all handlers to App if they exist
   for name in pairs(love.handlers) do

conf.lua

@@ -1,3 +0,0 @@
-function love.conf(t)
-  t.version = '11.4'
-end

live.lua

@@ -296,14 +296,13 @@ end
 
 -- return nil to continue the event loop, non-nil to quit
 function live.handle_error(err)
-  local msg = tostring(err)
   -- draw a pause indicator on screen
   love.graphics.setColor(1,0,0)
   love.graphics.rectangle('fill', 10,10, 3,10)
   love.graphics.rectangle('fill', 16,10, 3,10)
   love.graphics.present()
   -- print stack trace here just in case we ran the app through a terminal
-  local stack_trace = debug.traceback('Error: '..msg, --[[stack frame]]2):gsub('\n[^\n]+$', '')
+  local stack_trace = debug.traceback('Error: '..tostring(err), --[[stack frame]]2):gsub('\n[^\n]+$', '')
   print(stack_trace)
   print('Look in the driver for options to investigate further.')
   print("(You probably can't close the app window at this point. If you don't have the driver set up, you might need to force-quit.)")

main.lua

@@ -12,6 +12,16 @@ require 'button'
 require 'edit'
 Editor_state = {}
 
+function App.version_check()
+  Mode = 'version_check'
+  Supported_versions = {'11.4', '11.3', '11.2', '11.1', '11.0'}  -- keep these sorted in descending order
+  local major, minor = love.getVersion()
+  Version = major..'.'..minor
+  if array.find(Supported_versions, Version) then
+    Mode = 'run'
+  end
+end
+
 -- called both in tests and real run
 function App.initialize_globals()
   -- tests currently mostly clear their own state
@@ -128,10 +138,18 @@ function App.filedropped(file)
 end
 
 function App.draw()
+  if Mode == 'version_check' then
+    love.graphics.setColor(1,1,0)
+    love.graphics.rectangle('fill', 30,30, 400,400)
+    love.graphics.setColor(0,0,0)
+    love.graphics.printf(("This app doesn't support version %s; please use version %s. Press any key to try it with this version anyway."):format(Version, Supported_versions[1]), 40,40, 400)
+    return
+  end
   if on.draw then on.draw() end
 end
 
 function App.update(dt)
+  if Mode == 'version_check' then return end
   Current_time = Current_time + dt
   -- some hysteresis while resizing
   if Current_time < Last_resize_time + 0.1 then
@@ -143,21 +161,25 @@ function App.update(dt)
 end
 
 function App.mousepressed(x,y, mouse_button)
+  if Mode == 'version_check' then return end
   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
   if on.mouse_press then on.mouse_press(x,y, mouse_button) end
 end
 
 function App.mousereleased(x,y, mouse_button)
+  if Mode == 'version_check' then return end
   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
   if on.mouse_release then on.mouse_release(x,y, mouse_button) end
 end
 
 function App.wheelmoved(dx,dy)
+  if Mode == 'version_check' then return end
   Cursor_time = 0  -- ensure cursor is visible immediately after it moves
   if on.mouse_wheel_move then on.mouse_wheel_move(dx,dy) end
 end
 
 function App.focus(in_focus)
+  if Mode == 'version_check' then return end
   if in_focus then
     Last_focus_time = Current_time
   end
@@ -172,6 +194,7 @@ end
 -- App.keypressed is defined in keychord.lua
 
 function App.keychord_press(chord, key)
+  if Mode == 'version_check' then return end
   -- ignore events for some time after window in focus (mostly alt-tab)
   if Current_time < Last_focus_time + 0.01 then
     return
@@ -181,6 +204,7 @@ function App.keychord_press(chord, key)
 end
 
 function App.textinput(t)
+  if Mode == 'version_check' then return end
   -- ignore events for some time after window in focus (mostly alt-tab)
   if Current_time < Last_focus_time + 0.01 then
     return
@@ -190,6 +214,10 @@ function App.textinput(t)
 end
 
 function App.keyreleased(key, scancode)
+  if Mode == 'version_check' then
+    Mode = 'run'
+    return
+  end
   -- ignore events for some time after window in focus (mostly alt-tab)
   if Current_time < Last_focus_time + 0.01 then
     return