Cherry flower

--@name Cherry flower
--@author NekerSqu4w

if SERVER then
end

if CLIENT then
    local spawn_rate = 3 //Per sec
    local flower_lifetime = 300

    local wind_direction = Vector(math.random(-10,10),math.random(-10,10),0)
    local do_render, last_render = 0, 0

    local particle_mat = material.create("UnlitGeneric")
    particle_mat:setTextureURL("$basetexture", "https://i.imgur.com/vb9nrXL.png")

    local Particle = class("Particle")
    function Particle:initialize(pos, scale, direction, clr, lifetime)
        self.x = pos.x or 0
        self.y = pos.y or 0
        self.z = pos.z or 0
        self.scale = scale or 0
        self.normal = scale or 0
        self.x_vel = direction.x or 0
        self.y_vel = direction.y or 0
        self.z_vel = direction.z or 0
        self.color = clr or Color(0, 0, 0)
        self.lifetime = lifetime or 100
    end

    function Particle:think()
        self:draw()

        self.x = self.x + self.x_vel
        self.y = self.y + self.y_vel
        self.z = self.z + self.z_vel

        //self.scale = self.scale - math.random(0.20, 0.30)

        self.lifetime = self.lifetime - 1
    end

    function Particle:draw()
        render.setColor(self.color:setA(255))
        render.setMaterial(particle_mat)

        local pos = (Vector(self.x,self.y,self.z) + Vector(0, 0, 0)):toScreen()

        render.drawTexturedRect(pos.x - self.scale/2, pos.y - self.scale/2, self.scale, self.scale)
        render.setMaterial(nil)
        render.setColor(Color(255,255,255):setA(255))
    end

    local game = {}
    game.particles = {}

    hook.add("drawhud","",function()
        if last_render < timer.curtime() then
            do_render = true
            last_render = timer.curtime() + 1 / spawn_rate
        else
            do_render = false
        end

        if #game.particles <= 300 and do_render then
            local nP = Particle:new(chip():getPos() + Vector(math.random(-50,50),math.random(-50,50),100),math.random(20, 50),Vector(0,0,-0.5),Color(255, 255, 255, 255),flower_lifetime)
            table.insert(game.particles, nP)
        end

        for k, v in pairs(game.particles) do
            if v.lifetime <= 0 then table.remove(game.particles, k) continue end

            if (chip():getPos().z - v.z) <= 0 then

                v.x_vel = v.x_vel - (wind_direction.x * (1 / 5000) * (40 / v.scale))
                v.y_vel = v.y_vel - (wind_direction.y * (1 / 5000) * (40 / v.scale))
                v.z_vel = v.z_vel - (wind_direction.z * (1 / 5000) * (40 / v.scale))

            else

                v.z = chip():getPos().z

                v.x_vel = 0
                v.y_vel = 0
                v.z_vel = 0

            end

            v:think()
        end
    end)
end