Merge text0

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

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