Initial commit: Star Explorer Solar2D Game

highscores.lua

@@ -0,0 +1,156 @@
+
+local composer = require( "composer" )
+
+local scene = composer.newScene()
+
+-- -----------------------------------------------------------------------------------
+-- Code outside of the scene event functions below will only be executed ONCE unless
+-- the scene is removed entirely (not recycled) via "composer.removeScene()"
+-- -----------------------------------------------------------------------------------
+
+-- Initialize variables
+local json = require( "json" )
+
+local scoresTable = {}
+
+local filePath = system.pathForFile( "scores.json", system.DocumentsDirectory )
+
+
+local function loadScores()
+
+	local file = io.open( filePath, "r" )
+
+	if file then
+		local contents = file:read( "*a" )
+		io.close( file )
+		scoresTable = json.decode( contents )
+	end
+
+	if ( scoresTable == nil or #scoresTable == 0 ) then
+		scoresTable = { 10000, 7500, 5200, 4700, 3500, 3200, 1200, 1100, 800, 500 }
+	end
+end
+
+
+local function saveScores()
+
+	for i = #scoresTable, 11, -1 do
+		table.remove( scoresTable, i )
+	end
+
+	local file = io.open( filePath, "w" )
+
+	if file then
+		file:write( json.encode( scoresTable ) )
+		io.close( file )
+	end
+end
+
+
+local function gotoMenu()
+	composer.gotoScene( "menu", { time=800, effect="crossFade" } )
+end
+
+
+-- -----------------------------------------------------------------------------------
+-- Scene event functions
+-- -----------------------------------------------------------------------------------
+
+-- create()
+function scene:create( event )
+
+    local sceneGroup = self.view
+    -- Code here runs when the scene is first created but has not yet appeared on screen
+
+    -- Load the previous scores
+    loadScores()
+
+    -- Insert the saved score from the last game into the table, then reset it
+    table.insert( scoresTable, composer.getVariable( "finalScore" ) )
+    composer.setVariable( "finalScore", 0 )
+
+    -- Sort the table entries from highest to lowest
+    local function compare( a, b )
+        return a > b
+    end
+    table.sort( scoresTable, compare )
+
+    -- Save the scores
+    saveScores()
+
+    local background = display.newImageRect( sceneGroup, "background.png", 800, 1400 )
+    background.x = display.contentCenterX
+    background.y = display.contentCenterY
+
+    local highScoresHeader = display.newText( sceneGroup, "High Scores", display.contentCenterX, 100, native.systemFont, 44 )
+
+    for i = 1, 10 do
+        if ( scoresTable[i] ) then
+            local yPos = 150 + ( i * 56 )
+
+            local rankNum = display.newText( sceneGroup, i .. ")", display.contentCenterX-50, yPos, native.systemFont, 36 )
+            rankNum:setFillColor( 0.8 )
+            rankNum.anchorX = 1
+
+            local thisScore = display.newText( sceneGroup, scoresTable[i], display.contentCenterX-30, yPos, native.systemFont, 36 )
+            thisScore.anchorX = 0
+        end
+    end
+
+    local menuButton = display.newText( sceneGroup, "Menu", display.contentCenterX, 810, native.systemFont, 44 )
+    menuButton:setFillColor( 0.75, 0.78, 1 )
+    menuButton:addEventListener( "tap", gotoMenu )
+end
+
+
+-- show()
+function scene:show( event )
+
+	local sceneGroup = self.view
+	local phase = event.phase
+
+	if ( phase == "will" ) then
+		-- Code here runs when the scene is still off screen (but is about to come on screen)
+
+	elseif ( phase == "did" ) then
+		-- Code here runs when the scene is entirely on screen
+
+	end
+end
+
+
+-- hide()
+function scene:hide( event )
+
+	local sceneGroup = self.view
+	local phase = event.phase
+
+	if ( phase == "will" ) then
+		-- Code here runs when the scene is on screen (but is about to go off screen)
+
+	elseif ( phase == "did" ) then
+		-- Code here runs immediately after the scene goes entirely off screen
+		composer.removeScene( "highscores" )
+	end
+end
+
+
+-- destroy()
+function scene:destroy( event )
+
+	local sceneGroup = self.view
+	-- Code here runs prior to the removal of scene's view
+
+end
+
+
+-- -----------------------------------------------------------------------------------
+-- Scene event function listeners
+-- -----------------------------------------------------------------------------------
+scene:addEventListener( "create", scene )
+scene:addEventListener( "show", scene )
+scene:addEventListener( "hide", scene )
+scene:addEventListener( "destroy", scene )
+-- -----------------------------------------------------------------------------------
+
+return scene