How to make love2d game compatible - lua

Question

I am getting the message "This game indicates it was made for version '0.9.1' of LOVE.
It may not be compatible with the running version (0.10.2)." when I try and run my game. The game still works but the message is annoying me. How do I update it to the latest version? My code is here:
debug = true
Main.lua
-- Timers
-- We declare these here so we don't have to edit them multiple places
canShoot = true
canShootTimerMax = 0.2
canShootTimer = canShootTimerMax
createEnemyTimerMax = 0.4
createEnemyTimer = createEnemyTimerMax
-- Player Object
player = { x = 200, y = 710, speed = 150, img = nil }
isAlive = true
score = 0
-- Image Storage
bulletImg = nil
enemyImg = nil
-- Entity Storage
bullets = {} -- array of current bullets being drawn and updated
enemies = {} -- array of current enemies on screen
-- Collision detection taken function from http://love2d.org/wiki/BoundingBox.lua
-- Returns true if two boxes overlap, false if they don't
-- x1,y1 are the left-top coords of the first box, while w1,h1 are its width and height
-- x2,y2,w2 & h2 are the same, but for the second box
function CheckCollision(x1,y1,w1,h1, x2,y2,w2,h2)
return x1 < x2+w2 and
x2 < x1+w1 and
y1 < y2+h2 and
y2 < y1+h1
end
-- Loading
function love.load(arg)
player.img = love.graphics.newImage('assets/plane.png')
enemyImg = love.graphics.newImage('assets/enemy.png')
bulletImg = love.graphics.newImage('assets/bullet.png')
end
-- Updating
function love.update(dt)
-- I always start with an easy way to exit the game
if love.keyboard.isDown('escape') then
love.event.push('quit')
end
-- Time out how far apart our shots can be.
canShootTimer = canShootTimer - (1 * dt)
if canShootTimer < 0 then
canShoot = true
end
-- Time out enemy creation
createEnemyTimer = createEnemyTimer - (1 * dt)
if createEnemyTimer < 0 then
createEnemyTimer = createEnemyTimerMax
-- Create an enemy
randomNumber = math.random(10, love.graphics.getWidth() - 10)
newEnemy = { x = randomNumber, y = -10, img = enemyImg }
table.insert(enemies, newEnemy)
end
-- update the positions of bullets
for i, bullet in ipairs(bullets) do
bullet.y = bullet.y - (250 * dt)
if bullet.y < 0 then -- remove bullets when they pass off the screen
table.remove(bullets, i)
end
end
-- update the positions of enemies
for i, enemy in ipairs(enemies) do
enemy.y = enemy.y + (200 * dt)
if enemy.y > 850 then -- remove enemies when they pass off the screen
table.remove(enemies, i)
end
end
-- run our collision detection
-- Since there will be fewer enemies on screen than bullets we'll loop them first
-- Also, we need to see if the enemies hit our player
for i, enemy in ipairs(enemies) do
for j, bullet in ipairs(bullets) do
if CheckCollision(enemy.x, enemy.y, enemy.img:getWidth(), enemy.img:getHeight(), bullet.x, bullet.y, bullet.img:getWidth(), bullet.img:getHeight()) then
table.remove(bullets, j)
table.remove(enemies, i)
score = score + 1
end
end
if CheckCollision(enemy.x, enemy.y, enemy.img:getWidth(), enemy.img:getHeight(), player.x, player.y, player.img:getWidth(), player.img:getHeight())
and isAlive then
table.remove(enemies, i)
isAlive = false
end
end
if love.keyboard.isDown('left','a') then
if player.x > 0 then -- binds us to the map
player.x = player.x - (player.speed*dt)
end
elseif love.keyboard.isDown('right','d') then
if player.x < (love.graphics.getWidth() - player.img:getWidth()) then
player.x = player.x + (player.speed*dt)
end
end
if love.keyboard.isDown(' ', 'rctrl', 'lctrl', 'ctrl') and canShoot then
-- Create some bullets
newBullet = { x = player.x + (player.img:getWidth()/2), y = player.y, img = bulletImg }
table.insert(bullets, newBullet)
canShoot = false
canShootTimer = canShootTimerMax
end
if not isAlive and love.keyboard.isDown('r') then
-- remove all our bullets and enemies from screen
bullets = {}
enemies = {}
-- reset timers
canShootTimer = canShootTimerMax
createEnemyTimer = createEnemyTimerMax
-- move player back to default position
player.x = 50
player.y = 710
-- reset our game state
score = 0
isAlive = true
end
end
-- Drawing
function love.draw(dt)
for i, bullet in ipairs(bullets) do
love.graphics.draw(bullet.img, bullet.x, bullet.y)
end
for i, enemy in ipairs(enemies) do
love.graphics.draw(enemy.img, enemy.x, enemy.y)
end
love.graphics.setColor(255, 255, 255)
love.graphics.print("SCORE: " .. tostring(score), 400, 10)
if isAlive then
love.graphics.draw(player.img, player.x, player.y)
else
love.graphics.print("Press 'R' to restart", love.graphics:getWidth()/2-50, love.graphics:getHeight()/2-10)
end
if debug then
fps = tostring(love.timer.getFPS())
love.graphics.print("Current FPS: "..fps, 9, 10)
end
end
conf.lua
-- Configuration
function love.conf(t)
t.title = "Scrolling Shooter Tutorial" -- The title of the window the game is in (string)
t.version = "0.9.1" -- The LÖVE version this game was made for (string)
t.window.width = 480 -- we want our game to be long and thin.
t.window.height = 800
-- For Windows debugging
t.console = true
end

Answer 1

As noted in the comments, the problem in your case was that, in conf.lua, the version was specified as "0.9.1". In some cases, changing this value to "0.10.2" is sufficient, but a significant amount of changes occurred between 0.9.0 and 0.10.0.
Be especially aware that mouse input is definitely going to be broken because, in versions before 0.10.0, LOVE used strings to represent mouse buttons, whereas in 0.10.0 and beyond, numbers are used. To fix this, look for mouse-related functions (love.mouse.isDown, love.mousepressed, etc.) and change "l" to 1, "r" to 2, and so on. See the full list of old values and love.mousepressed for more. Additionally, mousewheel movement changed as well, with the addition of the love.wheelmoved callback and removing the strings passed to love.mousepressed.
Additionally, read through the changelog for any changes that may have affected your program.