It is a real shame the completed code for this example isn’t available for download and comparison.
Alright now it is showing no errors in the code, however there are no asteroids nor laser functions in the simulator.
Full code:
----------------------------------------------------------------------------------------- -- -- main.lua -- ----------------------------------------------------------------------------------------- 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 --part2 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 } ) ship:addEventListener( "tap", fireLaser ) endI’d go back and review my code step-by-step versus the tutorial.
I’m looking at the code (not the tutorial) and a couple things seem wrong.
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This line should not be in the fireLaser() function definition:
ship:addEventListener( “tap”, fireLaser )
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I don’t see you calling ‘createAsteroid()’ and I don’t think you are supposed to call it manually. There must be more to the tutorial.
PS - I’m taking off for the rest of the day and I think you’re on the way to getting this. So, if you post again, be aware I won’t be posting back till at least Monday. -Cheers.
I removed the event listener out of the firelaser function and I manually called the createasteroid command and now it seems to be working as intended. I am going to continue with the tutorial and see where that takes me. Thank you so much for your replies and help!
Also, upon reading further, I discovered that we later create a game loop so the asteroids weren’t supposed to be spawning yet.
Problem solved! 