Please help with my code

[OscarDaFries]

the ERROR:
Error

Resources/anim8.lua:36: frameWidth should be a number, was "nil"


Traceback

[love "callbacks.lua"]:228: in function 'handler'
[C]: in function 'error'
Resources/anim8.lua:36: in function 'assertPositiveInteger'
Resources/anim8.lua:101: in function 'newGrid'
main.lua:12: in function 'load'
[love "callbacks.lua"]:136: in function <[love "callbacks.lua"]:135>
[C]: in function 'xpcall'
[C]: in function 'xpcall'

My oringinal code:
function love.load()
anim8 = require 'Resources/anim8'
love.graphics.setDefaultFilter("nearest", "nearest")

player = {}
player.x = 400
player.y = 350
player.speed = 7.5
gravity = 0
isJumping = false
jumpHeight = 100
player.grid = anim8.newGrid( )

player.sprite = love.graphics.newImage('Lua ig assets/Sprites/Swordsman.png')
player.spriteSheet = love.graphics.newImage('Lua ig assets/Sprites/Swordsman run spritesheet.png')
player.grid = anim8.newGrid( 48, 48, player.spriteSheet:getWidth(), player.spriteSheet:getHeight() )

player.animations = {}
player.animations.left = anim8.newAnimation( player.grid('1-8', 2), 0.2 )
player.animations.right = anim8.newAnimation(player.grid('1-8', 1), 0.2 )

player.anim = player.animations.left
end

function love.update(dt)
local isMoving = false

if love.keyboard.isDown("d") then
player.x = player.x + player.speed
player.anim = player.animations.right
isMoving = true
end

if love.keyboard.isDown("a") then
player.x = player.x - player.speed
player.anim = player.animations.left
isMoving = true
end

if love.keyboard.isDown("space") and not isJumping then
gravity = -10
isJumping = true
end

if isJumping then
player.y = player.y + gravity
gravity = gravity + 0.5

if player.y > 350 then
player.y = 350
gravity = 0
isJumping = false
end
end


if isMoving == false then
player.anim:gotoFrame(9)
end

player.anim:update(dt)
end

function love.draw()
player.anim:draw(player.spriteSheet, player.x, player.y, nil, 10)
end

[vilonis]

I don’t k is what anim8 is, but it expects its first parameter to be a positive integer and you aren’t passing anything.

[OscarDaFries]

I follow Chalacade's turtorial for this code, if possible please point out the wrong part and rewrite it. Thank you

[Nikki]

Code: Select all

Error

Resources/anim8.lua:36: frameWidth should be a number, was "nil"

so, as it say, one of anim8's functions is being called with nil instead of a number.

to figure out which function you can look further in the error message :

Code: Select all

Resources/anim8.lua:101: in function 'newGrid'
main.lua:12: in function 'load'

so over at your line 12, in load() the function newGrid is called it says,
lo and behold:

Code: Select all

jumpHeight = 100
player.grid = anim8.newGrid( )

a few lines further you actually call the function the proper way, so maybe copy pasta or something, but the error has happened already then..

basically the error message and stack trace is there for you, the developer that run into an error, you can learn a lot from it.