NodeTest/sprite.lua

local class = require("30log")

local Sprite = class"Sprite"

function Sprite:init(sprite, x, y)
    local sprite_type = type(sprite)
    if sprite_type == "string" then
        self.sprite = love.graphics.newImage(sprite)
    elseif sprite_type == "userdata" then
        self.sprite = sprite
    else
        self.sprite = nil
    end
    if self.sprite then
        self.sprite:setFilter("nearest")
    end
    self.x = x or 0
    self.y = y or 0
    self.sx=2
    self.sy=2
    self.dx=0
    self.dy=0
end

function Sprite:update(dt)
    self.x = self.x + self.dx * dt
    self.y = self.y + self.dy * dt
end

function Sprite:draw()
    if not self.sprite then return end
    love.graphics.draw(self.sprite, self.x, self.y, 0, self.sx, self.sy)
end

return Sprite