-- Heal: restore health in small area around caster
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 = 1.0
  self.range = asset.config.range or 32.0

  ParticlePlayer:play("cast_spell", self.combatant.x + (self.combatant.width / 2),
    self.combatant.y + (self.combatant.height / 2), { duration = self.duration })

  self.startPos = { self.combatant.x, self.combatant.y }

  Sound.play("casting")
  return self
end

function Skill:update(dt)
  self.timer = self.timer + dt
  self.combatant.velX = self.combatant.velX / 5
  self.combatant.skillAnimation = "skill"

  if math.abs(self.combatant.x - self.startPos[1]) > 2 or math.abs(self.combatant.y - self.startPos[2]) > 2 then
    return true
  end

  if self.timer >= self.duration then
    Sound.play("potion")
    self:applyHeal()
    return true
  end
  return false
end

function Skill:draw()
end

function Skill:applyHeal()
  local allies = self:getAllies()
  local targets = self:getCombatantsInRange(allies, self.range)
  local healPotency = (self.combatant.stats.mag or 1) * (self.power or 1)
  for _, target in ipairs(targets) do
    local healAmount = math.min(healPotency, target.maxHealth - target.health)
    target:heal(healAmount)
  end
end

return Skill