-- Whirlwind: spinning attack hitting all nearby opponents
local BaseSkill = require("skills.base")
local Skill = {}
Skill.__index = Skill
setmetatable(Skill, { __index = BaseSkill })

function Skill:new(asset, combatant)
  self = setmetatable(BaseSkill:new(asset, combatant), Skill)
  self.duration = 0.5
  self.damageDealt = false
  self.range = 64
  self.angle = 0
  self.multiplier = 1.5
  combatant.skillAnimation = "skill"
  Sound.play("whirlwind")

  return self
end

function Skill:update(dt)
  self.timer = self.timer + dt
  self.angle = self.angle + dt * 8

  self.combatant.moveX = 0

  if not self.damageDealt and self.timer >= 0.15 then
    self.damageDealt = true
    local ex = self.combatant.x + self.combatant.width / 2
    local ey = self.combatant.y + self.combatant.height / 2
    local opponents = self:getOpponents()

    for _, target in ipairs(opponents) do
      local tx = target.x + target.width / 2
      local ty = target.y + target.height / 2
      local dist = math.sqrt((tx - ex) ^ 2 + (ty - ey) ^ 2)
      if dist <= self.range then
        local damage = self:calcDamage(self.combatant, target)
        target:damage(damage)
        local dir = (tx - ex) > 0 and 1 or -1
        target:knockback(dir, 200)
      end
    end
  end

  self:updateWeaponSprite(dt)

  if self.timer >= self.duration then
    self.finished = true
    self.combatant.skillAnimation = nil
    return true
  end
  return false
end

function Skill:draw()
  local alpha = 1 - (self.timer / self.duration)
  local ex = self.combatant.x + self.combatant.width / 2
  local ey = self.combatant.y + self.combatant.height / 2

  love.graphics.setColor(0.8, 0.8, 1, alpha * 0.4)
  love.graphics.arc("fill", ex, ey, self.range, self.angle, self.angle + 4)
  love.graphics.setColor(1, 1, 1, 1)

  self:drawWeaponSpriteAnimation(ex, ey, {
    scale = { self.combatant.facing, 1 },
    angle = self.timer * 15,
    origin = { -self.combatant.width / 2 + (self.config.weaponSpriteOffsetX or 0), self.config.weaponSpriteOffsetY or 0 }
  })
end

return Skill