"Attempt to index local 'self' (a nil value)" cant index variables of my classes - lua

Question

I know this question already exists a couple of times on this site, BUT my problem is a little different! So... see my problem is that im trying to get a value in a draw function i wrote for my player class but when im trying to get anything with self.such'n'such it says attempt to index local 'self' (a nil value) the functions arent important for my problem (I hope)
require"functions"
Acc = 2000
Decel = 2500
Maxspd = 900
Player = {}
Player.__index = Player
function Player:new(x,y)
local play = {}
setmetatable(play, Player)
play.inx = 0
play.iny = 0
play.dirx = 0
play.diry = 0
play.x = x
play.y = y
play.speedx = 0
play.speedy = 0
play.velx = 0
play.vely = 0
play.clr = "red"
play.hp = 100
play.rot = 0
play.size = 40
play.hoehe = math.sqrt(3) * (40 / 2)
return play
end
function love.load()
Main = Player:new(100,100)
end
function Player:update(d)
if love.keyboard.isDown("w") then self.iny = -1
elseif love.keyboard.isDown("s") then self.iny = 1 else self.iny = 0 end
if love.keyboard.isDown("d") then self.inx = 1
elseif love.keyboard.isDown("a") then self.inx = -1 else self.inx = 0 end
if self.inx == -self.dirx then self.speedx = self.speedx / 5 end
if self.iny == -self.diry then self.speedy = self.speedy / 5 end
self.dirx = self.inx
self.diry = self.iny
if self.inx ~= 0 then self.speedx = self.speedx + Acc * d
else self.speedx = self.speedx - Decel * d end
if self.iny ~= 0 then self.speedy = self.speedy + Acc * d
else self.speedy = self.speedy - Decel * d end
self.speedx = clamp(self.speedx,0,Maxspd)
self.speedy = clamp(self.speedy,0,Maxspd)
self.velx = self.speedx * d * self.dirx
self.vely = self.speedy * d * self.diry
self.x = self.x * d
self.y = self.y * d
end
function Player:getX() return self.x end
function Player:getY() return self.y end
function Player:switch()
if self.clr == "red" then self.clr = "blue" end
if self.clr == "blue" then self.clr = "red" end
end
function Player:draw()
local x1,x2,x3,y1,y2,y3 = 0,0,0,0,0,0
x1 = self.x - self.size / 2
y1 = self.y + self.hoehe / 2
x2 = self.x + self.size/2
y2 = self.y + self.hoehe / 2
x3 = self.x
y3 = self.y - self.hoehe / 2
x1, y1 = rotate_around_point(x1, y1, self.x, self.y, self.rot)
x2, y2 = rotate_around_point(x2, y2, self.x, self.y, self.rot)
x3, y3 = rotate_around_point(x3, y3, self.x, self.y, self.rot)
local verts = {x1,y1,x2,y2,x3,y3}
if self.clr == "blue" then love.graphics.setColor(0,255,0,1) end
if self.clr == "red" then love.graphics.setColor(255,0,0,1) end
love.graphics.polygon("fill",verts)
end
function love.keypressed(key,scancode,isrepeat)
if key == "space" then Main:switch() end
end
function love.update(d)
Main:update(d)
end
function love.draw()
Main.draw()
end

Answer 1

I had the same problem and #EgorSkriptunoff's answer was dead on; going to post here as an answer rather than a comment for posterity.
Probably, you are invoking your functions as x.f() instead of x:f()