-- A shrimp-like enemy unit
import "CoreLibs/object"
import "CoreLibs/graphics"
import "CoreLibs/sprites"
import "entity"

local gfx <const> = playdate.graphics

class("Ebi").extends(Entity)

function Ebi:init()
   local img = gfx.image.new(10, 10, gfx.kColorBlack)
   Ebi.super.init(self, img, 5)

   self:setCollidesWithGroupsMask(0x3)
   local dir = 1
   if math.random(2) == 1 then
      dir = -1
   end
   self.vector = {x=0, y=dir}

   self:weaponTimer()
end

function Ebi:update()
   local collisions = Ebi.super.update(self)
   for i=1, #collisions, 1 do
      if collisions[i].other:getGroupMask() == 0x1 then
         self.vector.y *= -1
      end
   end
end

function Ebi:weaponTimer()
   local t = playdate.timer.new(1000,
      function()
         local b = Bullet(2, 1, {x=-1, y=0}, 0x2)
         b:moveTo(self.x - (self.width/2) - 1, self.y)
         b:add()
      end
   )
   t.repeats = true
end