-- Attack: melee strike with configurable power, range, and speed
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.originalDir = self.combatant.facing
  self.duration = 0.5
  self.damageDealt = false
  self.range = 32
  combatant.skillAnimation = "attack"
  Sound.play("sword")

  local hit = {}
  local opponents = self:getOpponents()
  for _, t in ipairs(opponents) do
    if self:isInFront(t, self.range) then
      table.insert(hit, t)
    end
  end
  self.hitTargets = hit

  return self
end

function Skill:update(dt)
  self.timer = self.timer + dt
  self.combatant.moveX = 0

  if not self.damageDealt then
    self.damageDealt = true
    for _, target in ipairs(self.hitTargets) do
      local damage = self:calcDamage(self.combatant, target)
      if damage > 0 then
        target:damage(damage)
        target:knockback(self.combatant.facing, 180)
      end
    end
  end

  self:updateWeaponSprite(dt)

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

function Skill:draw()
  local weapon = self:getWeapon()
  if weapon then
    local offset = weapon.config.offset or { 0, 0 }
    local wX = self.combatant.x +
        (self.combatant.facing * ((math.cos(self.timer * 30) * 3) + 5 + offset[1]))
    local wY = self.combatant.y + self.combatant.visualOffsetY + offset[2]
    if self.combatant.facing == -1 then
      wX = wX + self.combatant.width
    end
    self:drawWeaponSpriteAnimation(wX, wY, { scale = { self.combatant.facing, 1 } })
  end
end

return Skill