-- Shoot: fires a projectile from the combatant
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 = 0.15
  self.shootTimer = 0.1
  combatant.skillAnimation = "skill"
  self:createProjectile()
  return self
end

function Skill:createProjectile()
  local ex = self.combatant.x + self.combatant.width / 2
  local ey = self.combatant.y + self.combatant.height / 2
  local speed = 300
  local power = self.power

  local weaponSprite = self:getWeaponSprite()
  if weaponSprite then
    local config = Utils.mergeTables({}, weaponSprite.config)
    config.animations = { default = { 2 } }
    local sprite = Sprite:new(weaponSprite.image, config)
    sprite:setAnimation("default")
    table.insert(self.context.projectiles or {}, Projectile:new(sprite, self.combatant, {
      x = ex + (self.combatant.facing * 8),
      y = ey - (Config.WEAPON_SPRITE_SIZE[2] / 2),
      dirX = self.combatant.facing,
      speed = speed,
      power = power
    }))
    Sound.play("shoot")
    --ParticlePlayer:play("sparkle", ex + self.combatant.facing * 12, ey, { duration = 0.3 })
  end
end

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

  self:updateWeaponSprite(dt)

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

function Skill:calcDamage(source, target)
  return BaseSkill.calcDamage(self, source, target)
end

function Skill:draw()
  local alpha = 1 - (self.timer / self.duration)
  love.graphics.setColor(0.9, 0.9, 0.3, alpha)
  local ex = self.combatant.x + self.combatant.width / 2
  local ey = self.combatant.y + self.combatant.height / 2
  love.graphics.circle("fill", ex + self.combatant.facing * 12, ey, 4 * alpha)
  love.graphics.setColor(1, 1, 1, 1)

  local weapon = self:getWeapon()
  local wX = self.combatant.x + (self.combatant.facing * (weapon.config.offset and weapon.config.offset[1] or 0))
  local wY = self.combatant.y + self.combatant.visualOffsetY + (weapon.config.offset and weapon.config.offset[2] or 0)
  if self.combatant.facing == -1 then
    wX = wX + self.combatant.width
  end
  self:drawWeaponSpriteAnimation(wX, wY, { scale = { self.combatant.facing, 1 } })
end

return Skill