turtle gps rework

turtle/system/turtle.lua

@@ -5,13 +5,11 @@ local fs     = _G.fs
 local turtle = _G.turtle
 
 if turtle then
-	local Home = require('turtle.home')
-
-	local values = { }
-	Config.load('gps', values.home and { values.home } or { })
+	local config = Config.load('gps')
 
 	local gpsTab = UI.Tab {
-		tabTitle = 'GPS',
+		tabTitle = 'Home',
+		description = 'Turtle home location',
 		labelText = UI.Text {
 			x = 3, y = 2,
 			value = 'On restart, return to this location'
@@ -19,7 +17,7 @@ if turtle then
 		grid = UI.Grid {
 			x = 3, ex = -3, y = 4,
 			height = 2,
-			values = values,
+			values = { config.home or { } },
 			inactive = true,
 			columns = {
 				{ heading = 'x', key = 'x' },
@@ -37,24 +35,41 @@ if turtle then
 			text = 'Clear',
 			event = 'gps_clear',
 		},
+		breakingText = UI.Text {
+			x = 3, y = 9,
+			value = 'Can break blocks',
+		},
+		breaking = UI.Checkbox {
+			x = 20, y = 9,
+			value = config.destructive,
+		},
 	}
+
 	function gpsTab:eventHandler(event)
 		if event.type == 'gps_set' then
 			self:emit({ type = 'info_message', message = 'Determining location' })
 			self:sync()
-			if Home.set() then
-				Config.load('gps', values)
-				self.grid:setValues(values.home and { values.home } or { })
+			local pt = turtle.enableGPS()
+			if pt then
+				config.home = pt
+				Config.update('gps', config)
+				self.grid:setValues({ config.home })
 				self.grid:draw()
 				self:emit({ type = 'success_message', message = 'Location set' })
 			else
 				self:emit({ type = 'error_message', message = 'Unable to determine location' })
 			end
 			return true
+
+		elseif event.type == 'checkbox_change' then
+			config.destructive = event.checked
+			Config.update('gps', config)
+
 		elseif event.type == 'gps_clear' then
 			fs.delete('usr/config/gps')
 			self.grid:setValues({ })
-			self.grid:draw()
+			self.breaking:reset()
+			self:draw()
 			return true
 		end
 	end