Initial commit: Star Explorer Solar2D Game

.gitignore

@@ -0,0 +1,27 @@
+# Solar2D / Corona SDK
+*.bak
+*.orig
+*.tmp
+*.log
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Build directories
+build/
+*.apk
+*.ipa
+*.app
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo

AndroidResources/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

AndroidResources/res/values/values.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#e2e2e2</color>
+</resources>

Images.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,108 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-40.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-58.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-87.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-80.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-120.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-180.png",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-76.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-152.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-167.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-1024.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Images.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

LaunchScreen.storyboardc/designable.storyboard

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+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11762" systemVersion="16D32" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11757"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
+                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

README.md

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+# Star Explorer
+
+This is an example game built with [Corona](http://www.coronalabs.com) to go along with the [Getting Started](https://docs.coronalabs.com/guide/programming/index.html) tutorial. The included source code goes along with the respective chapter.
+
+## Chapters
+
+* [Introduction to Corona](https://docs.coronalabs.com/guide/programming/intro/index.html)
+* [Chapter 1 — Creating an App](https://docs.coronalabs.com/guide/programming/01/index.html)
+* [Chapter 2 — Upward & Onward](https://docs.coronalabs.com/guide/programming/02/index.html)
+* [Chapter 3 — Bringing it to Life](https://docs.coronalabs.com/guide/programming/03/index.html)
+* [Chapter 4 — Creating Scenes](https://docs.coronalabs.com/guide/programming/04/index.html)
+* [Chapter 5 — Converting the Game to Composer](https://docs.coronalabs.com/guide/programming/05/index.html)
+* [Chapter 6 — Implementing High Scores](https://docs.coronalabs.com/guide/programming/06/index.html)
+* [Chapter 7 — Sounds and Music](https://docs.coronalabs.com/guide/programming/07/index.html)
+* [Chapter 8 — Deployment](https://docs.coronalabs.com/guide/programming/08/index.html)
+
+## Credits
+
+[Corona Labs](http://www.coronalabs.com) would like to extend its gratitude to:
+
+* Dr. Brian Burton ([burtonsmediagroup.com](http://www.burtonsmediagroup.com)) for his guidance, direction, and core tutorial content in creating this series. He has also created several [books](http://www.burtonsmediagroup.com/) about programming in Corona SDK.
+
+* Eric Matyas ([soundimage.org](http://www.soundimage.org)) for the game's music and sound effects. Eric offers numerous audio tracks and sound effects on his website, available on a donation basis.
+
+* ([Kenney](http://kenney.nl/)) for some of the game artwork. Kenney game studio supports other developers by creating free game assets and high quality learning material.

build.settings

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+--
+-- For more information on build.settings, see the Project Build Settings guide at:
+-- https://docs.coronalabs.com/guide/distribution/buildSettings
+--
+
+settings =
+{
+	orientation =
+	{
+		-- Supported values for orientation:
+		-- portrait, portraitUpsideDown, landscapeLeft, landscapeRight
+		default = "portrait",
+		supported = { "portrait", },
+	},
+
+	--
+	-- Android section
+	--
+	android =
+	{
+		usesPermissions =
+		{
+			"android.permission.INTERNET",
+		},
+	},
+
+	--
+	-- iOS section
+	--
+	iphone =
+	{
+		xcassets = "Images.xcassets",
+		plist =
+		{
+			UIStatusBarHidden = false,
+			UILaunchStoryboardName = "LaunchScreen",
+		},
+	},
+
+	--
+	-- Plugins section
+	--
+	plugins =
+	{
+
+	},
+
+	--
+	-- Project section
+	--
+	excludeFiles =
+	{
+		-- Exclude unnecessary files for each platform
+		all = { "Icon.png", "Icon-*dpi.png", "Images.xcassets", },
+		android = { "LaunchScreen.storyboardc", },
+	},
+}

config.lua

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+--
+-- For more information on config.lua see the Project Configuration Guide at:
+-- https://docs.coronalabs.com/guide/basics/configSettings
+--
+
+application =
+{
+	content =
+	{
+		width = 768,
+		height = 1024, 
+		scale = "zoomEven",
+		fps = 60,
+		
+		--[[
+		imageSuffix =
+		{
+			    ["@2x"] = 2,
+			    ["@4x"] = 4,
+		},
+		--]]
+	},
+}

game.lua

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+
+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()"
+-- -----------------------------------------------------------------------------------
+
+local physics = require( "physics" )
+physics.start()
+physics.setGravity( 0, 0 )
+
+-- Configure image sheet
+local sheetOptions =
+{
+    frames =
+    {
+        {   -- 1) asteroid 1
+            x = 0,
+            y = 0,
+            width = 102,
+            height = 85
+        },
+        {   -- 2) asteroid 2
+            x = 0,
+            y = 85,
+            width = 90,
+            height = 83
+        },
+        {   -- 3) asteroid 3
+            x = 0,
+            y = 168,
+            width = 100,
+            height = 97
+        },
+        {   -- 4) ship
+            x = 0,
+            y = 265,
+            width = 98,
+            height = 79
+        },
+        {   -- 5) laser
+            x = 98,
+            y = 265,
+            width = 14,
+            height = 40
+        },
+    },
+}
+local objectSheet = graphics.newImageSheet( "gameObjects.png", sheetOptions )
+
+-- Initialize variables
+local lives = 3
+local score = 0
+local died = false
+
+local asteroidsTable = {}
+
+local ship
+local gameLoopTimer
+local livesText
+local scoreText
+
+local backGroup
+local mainGroup
+local uiGroup
+
+local explosionSound
+local fireSound
+local musicTrack
+
+
+local function updateText()
+	livesText.text = "Lives: " .. lives
+	scoreText.text = "Score: " .. score
+end
+
+
+local function createAsteroid()
+
+	local newAsteroid = display.newImageRect( mainGroup, objectSheet, 1, 102, 85 )
+	table.insert( asteroidsTable, newAsteroid )
+	physics.addBody( newAsteroid, "dynamic", { radius=40, bounce=0.8 } )
+	newAsteroid.myName = "asteroid"
+
+	local whereFrom = math.random( 3 )
+
+	if ( whereFrom == 1 ) then
+		-- From the left
+		newAsteroid.x = -60
+		newAsteroid.y = math.random( 500 )
+		newAsteroid:setLinearVelocity( math.random( 40,120 ), math.random( 20,60 ) )
+	elseif ( whereFrom == 2 ) then
+		-- From the top
+		newAsteroid.x = math.random( display.contentWidth )
+		newAsteroid.y = -60
+		newAsteroid:setLinearVelocity( math.random( -40,40 ), math.random( 40,120 ) )
+	elseif ( whereFrom == 3 ) then
+		-- From the right
+		newAsteroid.x = display.contentWidth + 60
+		newAsteroid.y = math.random( 500 )
+		newAsteroid:setLinearVelocity( math.random( -120,-40 ), math.random( 20,60 ) )
+	end
+
+	newAsteroid:applyTorque( math.random( -6,6 ) )
+end
+
+
+local function fireLaser()
+
+	-- Play fire sound!
+	audio.play( fireSound )
+
+	local newLaser = display.newImageRect( mainGroup, objectSheet, 5, 14, 40 )
+	physics.addBody( newLaser, "dynamic", { isSensor=true } )
+	newLaser.isBullet = true
+	newLaser.myName = "laser"
+
+	newLaser.x = ship.x
+	newLaser.y = ship.y
+	newLaser:toBack()
+
+	transition.to( newLaser, { y=-40, time=500,
+		onComplete = function() display.remove( newLaser ) end
+	} )
+end
+
+
+local function dragShip( event )
+
+	local ship = event.target
+	local phase = event.phase
+
+	if ( "began" == phase ) then
+		-- Set touch focus on the ship
+		display.currentStage:setFocus( ship )
+		-- Store initial offset position
+		ship.touchOffsetX = event.x - ship.x
+
+	elseif ( "moved" == phase ) then
+		-- Move the ship to the new touch position
+		ship.x = event.x - ship.touchOffsetX
+
+	elseif ( "ended" == phase or "cancelled" == phase ) then
+		-- Release touch focus on the ship
+		display.currentStage:setFocus( nil )
+	end
+
+	return true  -- Prevents touch propagation to underlying objects
+end
+
+
+local function gameLoop()
+
+	-- Create new asteroid
+	createAsteroid()
+
+	-- Remove asteroids which have drifted off screen
+	for i = #asteroidsTable, 1, -1 do
+		local thisAsteroid = asteroidsTable[i]
+
+		if ( thisAsteroid.x < -100 or
+			 thisAsteroid.x > display.contentWidth + 100 or
+			 thisAsteroid.y < -100 or
+			 thisAsteroid.y > display.contentHeight + 100 )
+		then
+			display.remove( thisAsteroid )
+			table.remove( asteroidsTable, i )
+		end
+	end
+end
+
+
+local function restoreShip()
+
+	ship.isBodyActive = false
+	ship.x = display.contentCenterX
+	ship.y = display.contentHeight - 100
+
+	-- Fade in the ship
+	transition.to( ship, { alpha=1, time=4000,
+		onComplete = function()
+			ship.isBodyActive = true
+			died = false
+		end
+	} )
+end
+
+
+local function endGame()
+	composer.setVariable( "finalScore", score )
+	composer.gotoScene( "highscores", { time=800, effect="crossFade" } )
+end
+
+
+local function onCollision( event )
+
+	if ( event.phase == "began" ) then
+
+		local obj1 = event.object1
+		local obj2 = event.object2
+
+		if ( ( obj1.myName == "laser" and obj2.myName == "asteroid" ) or
+			 ( obj1.myName == "asteroid" and obj2.myName == "laser" ) )
+		then
+			-- Remove both the laser and asteroid
+			display.remove( obj1 )
+			display.remove( obj2 )
+
+			-- Play explosion sound!
+			audio.play( explosionSound )
+
+			for i = #asteroidsTable, 1, -1 do
+				if ( asteroidsTable[i] == obj1 or asteroidsTable[i] == obj2 ) then
+					table.remove( asteroidsTable, i )
+					break
+				end
+			end
+
+			-- Increase score
+			score = score + 100
+			scoreText.text = "Score: " .. score
+
+		elseif ( ( obj1.myName == "ship" and obj2.myName == "asteroid" ) or
+				 ( obj1.myName == "asteroid" and obj2.myName == "ship" ) )
+		then
+			if ( died == false ) then
+				died = true
+
+				-- Play explosion sound!
+				audio.play( explosionSound )
+
+				-- Update lives
+				lives = lives - 1
+				livesText.text = "Lives: " .. lives
+
+				if ( lives == 0 ) then
+					display.remove( ship )
+					timer.performWithDelay( 2000, endGame )
+				else
+					ship.alpha = 0
+					timer.performWithDelay( 1000, restoreShip )
+				end
+			end
+		end
+	end
+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
+
+	physics.pause()  -- Temporarily pause the physics engine
+
+	-- Set up display groups
+	backGroup = display.newGroup()  -- Display group for the background image
+	sceneGroup:insert( backGroup )  -- Insert into the scene's view group
+
+	mainGroup = display.newGroup()  -- Display group for the ship, asteroids, lasers, etc.
+	sceneGroup:insert( mainGroup )  -- Insert into the scene's view group
+
+	uiGroup = display.newGroup()    -- Display group for UI objects like the score
+	sceneGroup:insert( uiGroup )    -- Insert into the scene's view group
+	
+	-- Load the background
+	local background = display.newImageRect( backGroup, "background.png", 800, 1400 )
+	background.x = display.contentCenterX
+	background.y = display.contentCenterY
+	
+	ship = display.newImageRect( mainGroup, objectSheet, 4, 98, 79 )
+	ship.x = display.contentCenterX
+	ship.y = display.contentHeight - 100
+	physics.addBody( ship, { radius=30, isSensor=true } )
+	ship.myName = "ship"
+
+	-- Display lives and score
+	livesText = display.newText( uiGroup, "Lives: " .. lives, 200, 80, native.systemFont, 36 )
+	scoreText = display.newText( uiGroup, "Score: " .. score, 400, 80, native.systemFont, 36 )
+
+	ship:addEventListener( "tap", fireLaser )
+	ship:addEventListener( "touch", dragShip )
+
+	explosionSound = audio.loadSound( "audio/explosion.wav" )
+	fireSound = audio.loadSound( "audio/fire.wav" )
+	musicTrack = audio.loadStream( "audio/80s-Space-Game_Looping.wav" )
+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
+		physics.start()
+		Runtime:addEventListener( "collision", onCollision )
+		gameLoopTimer = timer.performWithDelay( 500, gameLoop, 0 )
+		-- Start the music!
+		audio.play( musicTrack, { channel=1, loops=-1 } )
+	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)
+		timer.cancel( gameLoopTimer )
+
+	elseif ( phase == "did" ) then
+		-- Code here runs immediately after the scene goes entirely off screen
+		Runtime:removeEventListener( "collision", onCollision )
+		physics.pause()
+		-- Stop the music!
+		audio.stop( 1 )
+		composer.removeScene( "game" )
+	end
+end
+
+
+-- destroy()
+function scene:destroy( event )
+
+	local sceneGroup = self.view
+	-- Code here runs prior to the removal of scene's view
+	-- Dispose audio!
+	audio.dispose( explosionSound )
+	audio.dispose( fireSound )
+	audio.dispose( musicTrack )
+end
+
+
+-- -----------------------------------------------------------------------------------
+-- Scene event function listeners
+-- -----------------------------------------------------------------------------------
+scene:addEventListener( "create", scene )
+scene:addEventListener( "show", scene )
+scene:addEventListener( "hide", scene )
+scene:addEventListener( "destroy", scene )
+-- -----------------------------------------------------------------------------------
+
+return scene

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

main.lua

@@ -0,0 +1,25 @@
+-- Copyright (c) 2017 Corona Labs Inc.
+-- Code is MIT licensed and can be re-used; see https://www.coronalabs.com/links/code/license
+-- Other assets are licensed by their creators:
+--    Art assets by Kenney: http://kenney.nl/assets
+--    Music and sound effect assets by Eric Matyas: http://www.soundimage.org
+
+print("main.lua file accessed")
+
+local composer = require("composer")
+
+-- Hide status bar
+display.setStatusBar(display.HiddenStatusBar)
+
+-- Seed the random number generator
+math.randomseed(os.time())
+
+-- Reserve channel 1 for background music
+audio.reserveChannels(1)
+-- Reduce the overall volume of the channel
+audio.setVolume(0.5, { channel = 1 })
+
+-- Go to the menu screen
+composer.gotoScene("menu")
+
+

main_original.lua

@@ -0,0 +1,255 @@
+-- Copyright (c) 2017 Corona Labs Inc.
+-- Code is MIT licensed and can be re-used; see https://www.coronalabs.com/links/code/license
+-- Other assets are licensed by their creators:
+--    Art assets by Kenney: http://kenney.nl/assets
+--    Music and sound effect assets by Eric Matyas: http://www.soundimage.org
+
+local physics = require( "physics" )
+physics.start()
+physics.setGravity( 0, 0 )
+
+-- Seed the random number generator
+math.randomseed( os.time() )
+
+-- Configure image sheet
+local sheetOptions =
+{
+    frames =
+    {
+        {   -- 1) asteroid 1
+            x = 0,
+            y = 0,
+            width = 102,
+            height = 85
+        },
+        {   -- 2) asteroid 2
+            x = 0,
+            y = 85,
+            width = 90,
+            height = 83
+        },
+        {   -- 3) asteroid 3
+            x = 0,
+            y = 168,
+            width = 100,
+            height = 97
+        },
+        {   -- 4) ship
+            x = 0,
+            y = 265,
+            width = 98,
+            height = 79
+        },
+        {   -- 5) laser
+            x = 98,
+            y = 265,
+            width = 14,
+            height = 40
+        },
+    },
+}
+local objectSheet = graphics.newImageSheet( "gameObjects.png", sheetOptions )
+
+-- Initialize variables
+local lives = 3
+local score = 0
+local died = false
+
+local asteroidsTable = {}
+
+local ship
+local gameLoopTimer
+local livesText
+local scoreText
+
+-- Set up display groups
+local backGroup = display.newGroup()  -- Display group for the background image
+local mainGroup = display.newGroup()  -- Display group for the ship, asteroids, lasers, etc.
+local uiGroup = display.newGroup()    -- Display group for UI objects like the score
+
+-- Load the background
+local background = display.newImageRect( backGroup, "background.png", 800, 1400 )
+background.x = display.contentCenterX
+background.y = display.contentCenterY
+
+ship = display.newImageRect( mainGroup, objectSheet, 4, 98, 79 )
+ship.x = display.contentCenterX
+ship.y = display.contentHeight - 100
+physics.addBody( ship, { radius=30, isSensor=true } )
+ship.myName = "ship"
+
+-- Display lives and score
+livesText = display.newText( uiGroup, "Lives: " .. lives, 200, 80, native.systemFont, 36 )
+scoreText = display.newText( uiGroup, "Score: " .. score, 400, 80, native.systemFont, 36 )
+
+-- Hide the status bar
+display.setStatusBar( display.HiddenStatusBar )
+
+
+local function updateText()
+	livesText.text = "Lives: " .. lives
+	scoreText.text = "Score: " .. score
+end
+
+
+local function createAsteroid()
+
+	local newAsteroid = display.newImageRect( mainGroup, objectSheet, 1, 102, 85 )
+	table.insert( asteroidsTable, newAsteroid )
+	physics.addBody( newAsteroid, "dynamic", { radius=40, bounce=0.8 } )
+	newAsteroid.myName = "asteroid"
+
+	local whereFrom = math.random( 3 )
+
+	if ( whereFrom == 1 ) then
+		-- From the left
+		newAsteroid.x = -60
+		newAsteroid.y = math.random( 500 )
+		newAsteroid:setLinearVelocity( math.random( 40,120 ), math.random( 20,60 ) )
+	elseif ( whereFrom == 2 ) then
+		-- From the top
+		newAsteroid.x = math.random( display.contentWidth )
+		newAsteroid.y = -60
+		newAsteroid:setLinearVelocity( math.random( -40,40 ), math.random( 40,120 ) )
+	elseif ( whereFrom == 3 ) then
+		-- From the right
+		newAsteroid.x = display.contentWidth + 60
+		newAsteroid.y = math.random( 500 )
+		newAsteroid:setLinearVelocity( math.random( -120,-40 ), math.random( 20,60 ) )
+	end
+
+	newAsteroid:applyTorque( math.random( -6,6 ) )
+end
+
+
+local function fireLaser()
+
+	local newLaser = display.newImageRect( mainGroup, objectSheet, 5, 14, 40 )
+	physics.addBody( newLaser, "dynamic", { isSensor=true } )
+	newLaser.isBullet = true
+	newLaser.myName = "laser"
+
+	newLaser.x = ship.x
+	newLaser.y = ship.y
+	newLaser:toBack()
+
+	transition.to( newLaser, { y=-40, time=500,
+		onComplete = function() display.remove( newLaser ) end
+	} )
+end
+
+ship:addEventListener( "tap", fireLaser )
+
+
+local function dragShip( event )
+
+	local ship = event.target
+	local phase = event.phase
+
+	if ( "began" == phase ) then
+		-- Set touch focus on the ship
+		display.currentStage:setFocus( ship )
+		-- Store initial offset position
+		ship.touchOffsetX = event.x - ship.x
+
+	elseif ( "moved" == phase ) then
+		-- Move the ship to the new touch position
+		ship.x = event.x - ship.touchOffsetX
+
+	elseif ( "ended" == phase or "cancelled" == phase ) then
+		-- Release touch focus on the ship
+		display.currentStage:setFocus( nil )
+	end
+
+	return true  -- Prevents touch propagation to underlying objects
+end
+
+ship:addEventListener( "touch", dragShip )
+
+
+local function gameLoop()
+
+	-- Create new asteroid
+	createAsteroid()
+
+	-- Remove asteroids which have drifted off screen
+	for i = #asteroidsTable, 1, -1 do
+		local thisAsteroid = asteroidsTable[i]
+
+		if ( thisAsteroid.x < -100 or
+			 thisAsteroid.x > display.contentWidth + 100 or
+			 thisAsteroid.y < -100 or
+			 thisAsteroid.y > display.contentHeight + 100 )
+		then
+			display.remove( thisAsteroid )
+			table.remove( asteroidsTable, i )
+		end
+	end
+end
+
+gameLoopTimer = timer.performWithDelay( 500, gameLoop, 0 )
+
+
+local function restoreShip()
+
+	ship.isBodyActive = false
+	ship.x = display.contentCenterX
+	ship.y = display.contentHeight - 100
+
+	-- Fade in the ship
+	transition.to( ship, { alpha=1, time=4000,
+		onComplete = function()
+			ship.isBodyActive = true
+			died = false
+		end
+	} )
+end
+
+
+local function onCollision( event )
+
+	if ( event.phase == "began" ) then
+
+		local obj1 = event.object1
+		local obj2 = event.object2
+
+		if ( ( obj1.myName == "laser" and obj2.myName == "asteroid" ) or
+			 ( obj1.myName == "asteroid" and obj2.myName == "laser" ) )
+		then
+			-- Remove both the laser and asteroid
+			display.remove( obj1 )
+			display.remove( obj2 )
+
+			for i = #asteroidsTable, 1, -1 do
+				if ( asteroidsTable[i] == obj1 or asteroidsTable[i] == obj2 ) then
+					table.remove( asteroidsTable, i )
+					break
+				end
+			end
+
+			-- Increase score
+			score = score + 100
+			scoreText.text = "Score: " .. score
+
+		elseif ( ( obj1.myName == "ship" and obj2.myName == "asteroid" ) or
+				 ( obj1.myName == "asteroid" and obj2.myName == "ship" ) )
+		then
+			if ( died == false ) then
+				died = true
+
+				-- Update lives
+				lives = lives - 1
+				livesText.text = "Lives: " .. lives
+
+				if ( lives == 0 ) then
+					display.remove( ship )
+				else
+					ship.alpha = 0
+					timer.performWithDelay( 1000, restoreShip )
+				end
+			end
+		end
+	end
+end
+
+Runtime:addEventListener( "collision", onCollision )

menu.lua

@@ -0,0 +1,99 @@
+
+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()"
+-- -----------------------------------------------------------------------------------
+
+local function gotoGame()
+	composer.gotoScene( "game", { time=800, effect="crossFade" } )
+end
+
+local function gotoHighScores()
+	composer.gotoScene( "highscores", { 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
+
+	local background = display.newImageRect( sceneGroup, "background.png", 800, 1400 )
+	background.x = display.contentCenterX
+	background.y = display.contentCenterY
+
+	local title = display.newImageRect( sceneGroup, "title.png", 500, 80 )
+	title.x = display.contentCenterX
+	title.y = 200
+
+	local playButton = display.newText( sceneGroup, "Play", display.contentCenterX, 700, native.systemFont, 44 )
+	playButton:setFillColor( 0.82, 0.86, 1 )
+
+	local highScoresButton = display.newText( sceneGroup, "High Scores", display.contentCenterX, 810, native.systemFont, 44 )
+	highScoresButton:setFillColor( 0.75, 0.78, 1 )
+
+	playButton:addEventListener( "tap", gotoGame )
+	highScoresButton:addEventListener( "tap", gotoHighScores )
+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
+
+	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

scene-template.lua

@@ -0,0 +1,77 @@
+
+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()"
+-- -----------------------------------------------------------------------------------
+
+
+
+
+-- -----------------------------------------------------------------------------------
+-- 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
+
+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
+
+	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