Changed reserved keys (arrows are no longer reserved) and now F2 always gets to the input config except when in-game.

main.lua

@@ -114,14 +114,15 @@ function love.keypressed(key, scancode)
 	if scancode == "f4" then
 		config["fullscreen"] = not config["fullscreen"]
 		love.window.setFullscreen(config["fullscreen"])
-	-- reserved keys, so the user can always get back to configure input
+	elseif scancode == "f2" and scene.title ~= "Input Config" and scene.title ~= "Game" then
-	elseif scancode == "return" then
+		scene = InputConfigScene()
-		scene:onInputPress({input="menu_decide", type="key", key=key, scancode=scancode})
+	-- function keys are reserved
+	elseif string.match(scancode, "^f[1-9]$") or string.match(scancode, "^f[1-9][0-9]+$") then
+		return	
+	-- escape is reserved for menu_back
 	elseif scancode == "escape" then
 		scene:onInputPress({input="menu_back", type="key", key=key, scancode=scancode})
-	elseif scancode == "left" or scancode == "right" or scancode == "up" or scancode == "down" then
+	-- pass any other key to the scene, with its configured mapping
-		scene:onInputPress({input=scancode, type="key", key=key, scancode=scancode})
-	-- other keys can be configured
 	else
 		local input_pressed = nil
 		if config.input and config.input.keys then
@@ -132,14 +133,13 @@ function love.keypressed(key, scancode)
 end
 
 function love.keyreleased(key, scancode)
-	-- reserved keys, so the user can always get back to configure input
+	-- escape is reserved for menu_back
-	if scancode == "return" then
+	if scancode == "escape" then
-		scene:onInputRelease({input="menu_decide", type="key", key=key, scancode=scancode})
-	elseif scancode == "escape" then
 		scene:onInputRelease({input="menu_back", type="key", key=key, scancode=scancode})
-	elseif scancode == "left" or scancode == "right" or scancode == "up" or scancode == "down" then
+	-- function keys are reserved
-		scene:onInputRelease({input=scancode, type="key", key=key, scancode=scancode})
+	elseif string.match(scancode, "^f[1-9]$") or string.match(scancode, "^f[1-9][0-9]+$") then
-	-- other keys can be configured
+		return	
+	-- handle all other keys; tab is reserved, but the input config scene keeps it from getting configured as a game input, so pass tab to the scene here
 	else
 		local input_released = nil
 		if config.input and config.input.keys then

scene/game.lua

@@ -1,4 +1,7 @@
 local GameScene = Scene:extend()
+
+GameScene.title = "Game"
+
 require 'load.save'
 
 function GameScene:new(game_mode, ruleset)

scene/input_config.lua

@@ -61,7 +61,7 @@ function ConfigScene:render()
 		love.graphics.print("press enter to confirm, delete/backspace to retry" .. (config.input and ", escape to cancel" or ""))
 	else
 		love.graphics.print("press key or joystick input for " .. configurable_inputs[self.input_state] .. ", tab to skip" .. (config.input and ", escape to cancel" or ""), 0, 0)
-		love.graphics.print("enter, delete, backspace, tab, arrows, and escape can't be changed", 0, 20)
+		love.graphics.print("function keys (F1, F2, etc.), escape, and tab can't be changed", 0, 20)
 	end
 end
 
@@ -76,8 +76,9 @@ end
 
 function ConfigScene:onInputPress(e)
 	if e.type == "key" then
-		-- enter, delete, backspace, tab, arrows, and escape are reserved and can't be remapped
+		-- function keys, escape, and tab are reserved and can't be remapped
 		if e.scancode == "escape" and config.input then
+			-- cancel only if there was an input config already
 			scene = TitleScene()
 		elseif self.input_state > table.getn(configurable_inputs) then
 			if e.scancode == "return" then
@@ -90,30 +91,18 @@ function ConfigScene:onInputPress(e)
 				self.input_state = 1
 				self.set_inputs = newSetInputs()
 				self.new_input = {}
-			elseif e.scancode == "escape" and config.input then
-				-- cancel only if there was an input config already
-				scene = TitleScene()
 			end
-		elseif
+		elseif e.scancode == "tab" then
-			e.scancode ~= "delete" and
+			self.set_inputs[configurable_inputs[self.input_state]] = "skipped"
-			e.scancode ~= "backspace" and
+			self.input_state = self.input_state + 1
-			e.scancode ~= "return" and
+		elseif e.scancode ~= "escape" then
-			e.scancode ~= "left" and
+			-- all other keys can be configured
-			e.scancode ~= "right" and
+			if not self.new_input.keys then
-			e.scancode ~= "up" and
+				self.new_input.keys = {}
-			e.scancode ~= "down"
-		then
-			if e.scancode == "tab" then
-				self.set_inputs[configurable_inputs[self.input_state]] = "skipped"
-				self.input_state = self.input_state + 1
-			else
-				if not self.new_input.keys then
-					self.new_input.keys = {}
-				end
-				self.set_inputs[configurable_inputs[self.input_state]] = "key " .. love.keyboard.getKeyFromScancode(e.scancode) .. " (" .. e.scancode .. ")"
-				self.new_input.keys[e.scancode] = configurable_inputs[self.input_state]
-				self.input_state = self.input_state + 1
 			end
+			self.set_inputs[configurable_inputs[self.input_state]] = "key " .. love.keyboard.getKeyFromScancode(e.scancode) .. " (" .. e.scancode .. ")"
+			self.new_input.keys[e.scancode] = configurable_inputs[self.input_state]
+			self.input_state = self.input_state + 1
 		end
 	elseif string.sub(e.type, 1, 3) == "joy" then
 		if self.input_state <= table.getn(configurable_inputs) then