-- A squid-like enemy unit
import "CoreLibs/object"
import "CoreLibs/graphics"
import "CoreLibs/sprites"
import "CoreLibs/timer"
import "entity"
import "util"

local gfx <const> = playdate.graphics
local geom <const> = playdate.geometry

class("Ika").extends(Entity)

function Ika:init(target)
   Ika.super.init(self, gfx.image.new("images/ika.png"), 25, 1)
   self.target = target
   self:setCollidesWithGroupsMask(0x2)
   self.type = 'ika'
end

function Ika:onReady()
   self.weaponTimer = playdate.timer.new(5000,
      function()
         local b = Bullet(10, 20, self:calculateVector(self.target))
         b:moveTo(self.x - (self.width/2) - 1, self.y)
         b:add()
      end
   )
   self.weaponTimer.repeats = true
end

function Ika:calculateVector(target)
   local x1,y1 = self:getPosition()
   local x2,y2 = target:getPosition()
   return util.unitPointer(x1,y1,x2,y2) * 5
end

function Ika:remove()
   Ika.super.remove(self)
   if self.weaponTimer then self.weaponTimer:remove() end
end