quack2/data/scripts/classes/feed.lua

local Vector3 = require "types.vector3"

local TEXTURE = "images/tongue.png"

local Feed = {}

Feed.__index = Feed

function Feed.new(position, direction)
  local f = {
    position = position:copy(),
    direction = direction:copy(),
    velocity = Vector3(),
    landed = false,
    occupied = false,

    speed = 0.15,
  }
  f.velocity = f.direction * f.speed
  f.velocity.y = 0.1

  return setmetatable(f, Feed)
end

function Feed:tick(ctx)
  if not self.landed then
    -- gravity
    self.velocity.y = math.max(self.velocity.y - 0.02, -0.2)
    self.position = self.position + self.velocity
  end
  
  if self.position.y <= 0.2 and not self.landed then
    self.position.y = 0.2
    self.landed = true
  end
  draw_billboard{position = self.position, texture = TEXTURE, size = Vector3(0.2, 0.2)}
end

return Feed