CODEWITHSUNDEEP
lualove2d
Ben Harvey
Ben Harvey

Reputation: 49

Attempting to call player a table value

I am writing my first lua script with love2d and I am not sure why I am getting the error "main.lua:4 attempting to call global 'Player' a table value". My 2 scripts are below: --Main.lua

require("player")
function love.load()
  p = Player()
end

function love.update(dt)
  p:update(dt)
end

function love.draw()
  p:draw()
end

--Player.lua

  Player = {}
    --variables for the player (size, position, speed)

function Player:new()
  o = {
    x = 30,
    y = 30,
    w = 20,
    h = 20,
    speed = 300,
      }
  setmetatable(player, { __index = Player })
end

function Player:update(dt)
  if love.keyboard.isDown("a") then
    player.x = player.x - player.speed * dt
  end
  if love.keyboard.isDown("d") then
    player.x = player.x + player.speed * dt
    end
  if love.keyboard.isDown("w") then
    player.y = player.y + player.speed * dt
    end
  if love.keyboard.isDown("s") then
    player.y = player.y - player.speed * dt
    end
  end

function Player:draw()
  love.graphics.rectangle("fill", o.x, o.y, o.w, os.h)
end

Upvotes: 0

Views: 1478

Answers (2)

Vlad
Vlad

Reputation: 5857

You have a Player table, implementing some class. That's a table, you shouldn't call it like p = Player(). Call the new() method instead:

function love.load()
  p = Player:new()
end

Also, it seems there's bugs in that new() too. You declare global o variable (should be local really), and you return player instead of o, and there's no player there at all. Fix it like this:

function Player:new()
  local player = {
    x = 30,
    y = 30,
    w = 20,
    h = 20,
    speed = 300,
      }
  return setmetatable(player, { __index = Player })
end

Upvotes: 1

pkisztelinski
pkisztelinski

Reputation: 542

Try to avoid global variables like Player in player.lua, this is asking for trouble

This should work:

main.lua

local player = require("player")

function love.load()
  p = player:new()
end

function love.update(dt)
  p:update(dt)
end

function love.draw()
  p:draw()
end

player.lua

 local Player = {}

function Player:new()
  local player = {
    x = 30,
    y = 30,
    w = 20,
    h = 20,
    speed = 300,
    }
  self.__index = self
  return setmetatable(player, self)
end

function Player:update(dt)
  if love.keyboard.isDown("a") then
    self.x = self.x - self.speed * dt
  end
  if love.keyboard.isDown("d") then
    self.x = self.x + self.speed * dt
    end
  if love.keyboard.isDown("w") then
    self.y = self.y + self.speed * dt
    end
  if love.keyboard.isDown("s") then
    self.y = self.y - self.speed * dt
    end
  end

function Player:draw()
  love.graphics.rectangle("fill", self.x, self.y, self.w, self.h)
end

return Player

Upvotes: 0

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