--[[
--  Operation Black Trinity.
--  
--  Sixth mission in the collective mini campaign.
--
--  Notable compaign changes:
--    * Keer takes over command superseding Dimitri.
--    * First real combat begins.
--    * Most of the pilot is unrevealed.
--
--  Mission Obectives:
--    * Attempt to arrest Zakred.
--    * Kill Zakred.
--
--  Mission Stages:
--    0) Get to the trinity.
--    1) Trinity combat.
--    2) Trinity dead/run.
--    3) Ran away.
--
--  Not too happy with the text (it chews it all up for you), but then again,
--  I'm no writer. ;P
--]]

lang = lephisto.lang()
if lang == "es" then
  -- Not translated atm.
else
  misn_title    = "Operation Black Trinity"
  misn_reward   = "None"
  misn_desc     = {}
  misn_desc[1]  = "Arrest the ESS Trinity in %s."
  misn_desc[2]  = "Return to base at %s in %s."
  title         = {}
  title[1]      = "Bar"
  title[2]      = "Interrogation Room"
  title[3]      = "Operation Black Trinity"
  title[4]      = "Mission Accomplished"
  title[5]      = "Mission Failure"
  text          = {}
  text[1]       = [[As you enter the bar you can't seem to to see Sergeant Dimitri. You look a around a little for him, when you feel a heavy hand fall on your shoulder. It seems like two armed soldiers are here to escort you somewhere, and from the looks of their weapons, they mean business. You have no choice other than to comply.
  They start leading you away from the bar through some hallways you've never been through. Must be all those 'Authorized Personnel Only' signs and the armed guards that didn't make them too appealing.
  Finally they toss you into what seems to be an interrogation room, telling you just to wait there.]]
  text[2]       = [[After what seems to be a decaSTU you hear the door open. You see a condecorated woman walk in with two soldiers at the door. She seems to be a Commodore from the insignia on her uniform.
  "Hello, I'm Commodore Keer, I've taken over the Collective issue. I have heard about your success in the previous missions and would like to offer you more continued work. However further procedings must be kept in strict confidentiality for the interest of the Empire. Are you willing to go all the way with this?"]]
  text[3]       = [[You accept, she then dismisses both of the soldiers who proceed to wait outside.
  "We've been following Sergeant Dimitri's progress since he started at %s. The datapad you brought back has confirmed what we have suspected. We have an undercover Collective agent somewhere in the military who's been feeding ex-Commodore Welsh data. You don't understand right? Let me Explain."]]
  text[4]       = [["The Collective was actually a project for the Empire, they were supposed to be the ultimate weapon in flexibility and offense. Commodore Welsh was in charge of the secret science facility on %s. Shortly after the Incident we stopped hearing from the science facility. We sent a recon and were met with hostile Collective Drones. It seems like the project had been a success, but the traitor Welsh went rogue. Under normal circumstances we would have easily crushed the Collective, but after the incident these are hardly normal circumstances."
  She goes on, "Things have got out of hand. We have had chances to crush Welsh, but he seems to have always evaded us and struck us where we were weakest. We always knew there must have been another traitor in our midst, but the datapad information we now know who it is."]]
  text[5]       = [[She now clears her throat, "This operation has been dubbed "Operation Black Trinity". We have reason to believe that the ESS Trinity has been operating with the traitor Welsh. The ESS Trinity is commanded by Captain Zakred. You will form part of an assault team with primary objectives of arresting Zakred. If all goes wrong, you are ordered to kill Zakred. He must not escape."
  "We'll be sending you with a small force. You just stick around and if any trouble arises, take the ESS Trinity down. Zakred is currently doing some maneuver exercises in %s. You will have to find him there. The other ships will follow your lead to %s. Good luck!"]]
  text[6]       = [[You see Commodore Keer with a dozen soldiers waiting for you outside the landing pad.
  Congratulations on the success %s. We never really expected to take Zakred alove. Good Riddance. The next step is to begin an all out attack on Collective territory. Meet up in the bar when you're ready. We'll need all available pilots."]]
  text[7]       = [[You see Commodore Keer with a dozen soldiers waiting for you outside the landing pad.
  You weren't supposed to let the Trinity get away! Now we have no cards to play, we must wait for the Collective response or new information before being able to continue. We'll notify you if we have something you can do for us, but for now we just wait."]]
  -- Conversation between pilots.
  talk          = {}
  talk[1]       = "ESS Trinity: Please turn off your engines and prepare to be boarded."
  talk[2]       = "You will never take me alive!"
  talk[3]       = "Very well then. All units engage ESS Trinity."
  talk[4]       = "Incoming Collective drones detected."
  talk[5]       = "Mission Success: Return to base."
  talk[6]       = "Mission Failure: Return to base."
end

-- Create the mission.
function create()
  tk.msg(title[1], text[1])

  -- Intro text.
  if tk.yesno(title[2], text[2])
    then
      misn.accept()

    -- Mission data.
    misn_stage = 0
    misn_base, misn_base_sys = space.getPlanet("Omega Station")
    misn_target_sys = space.getSystem("NCG-7690")
    misn.setMarker(misn_target_sys)

    -- Mission details.
    misn.setTitle(misn_title)
    misn.setReward(misn_reward)
    misn.setDesc(string.format(misn_desc[1], misn_target_sys:name()))
    tk.msg(title[2], string.format(text[3], misn_base:name()))
    tk.msg(title[3], string.format(text[4], "Eiroik"))
    tk.msg(title[4], string.format(text[5], misn_target_sys:name()))

    -- Escorts.
    esc_pacifier  = true
    esc_lancelot1 = true
    esc_lancelot2 = true

    hook.enter("jump")
    hook.land("land");
  end
end

-- Handle jumping to target system.
function jump()
  -- Only done for stage 1.
  if misn_stage == 0 then
    local sys = space.getSystem()

    -- Escorts enter a while back.
    enter_vect = player.pos()
    if enter_vect:dist() < 1000 then -- Assume landed.
      add_escorts()
    else -- Just jumped.
      misn.timerStart("add_escorts", rnd.int(2000, 5000))
    end

    -- Create some havoc.
    if sys == target_sys then
      -- Disable spawning and clear pilots -> make it more epic. ;P
      pilot.clear()
      pilot.toggleSpawn(false)

      misn_stage = 1

      -- Position trinity on the other side of the player.
      v = player.pos()
      x, y = v:get()
      v:set(-x, -y)
      trinity = pilot.add("Trinity", "noidle", v)
      trinity = trinity[1]
      hook.pilot(trinity, "death", "trinity_kill")
      hook.pilot(trinity, "jump", "trinity_jump")

      final_fight = 0
      misn.timerStart("final_talk", rnd.int(6000, 8000)) -- Escorts should be in system by now.
    end

  -- Player ran away from combat - big disgrace..
  elseif misn_stage == 1 then
    misn_stage = 3
    player.msg(talk[6])
  end
end

-- Get the empire talker.
function emp_talker()
  if esc_pacifier then
    talker = paci
  elseif esc_lancelot1 then
    talker = lance1
  elseif esc_lancelot2 then
    talker = lance2
  else
    -- I don't like the idea of player talking, but we need the conversation.
    talker = player.getPilot()
  end
  return talker
end

-- Little talk when ESS Trinity is encountered.
function final_talk()
  -- Empire taks about arresting.
  if final_fight == 0 then
    talker = emp_talker()
    talker:broadcast(talk[1])

    final_fight = 1
    misn.timerStart("final_talk", rnd.int(3000, 4000))
  elseif final_fight == 1 then
    talker = trinity
    talker:broadcast(talk[2])

    final_fight = 2
    misn.timerStart("final_talk", rnd.int(3000, 4000))
  elseif final_fight == 2 then
    -- Talk.
    talk = emp_talker()
    talker:broadcast(talk[3])

    -- ESS Trinity becomes collective now.
    trinity:setFaction("Collective")
    trinity:setHostile()

    final_fight = 3
    misn.timerStart("final_talk", rnd.int(4000, 5000))
  else if final_fight == 3 then
    player.msg(talk[4])
    misn.timerStart("call_drones", rnd.int(3000, 5000))
  end
end

-- Calls help for the ESS Trinity.
function call_drones()
  pilots = pilot.add("Collective Sml Swarm")
  for k, v in ipairs(pilots) do
    v:setHostile()
  end
end

-- Add escorts that weren't killed sometime.
function add_escorts()
  if esc_pacifier then
    enter_vect:add(rnd.int(-50,50), rnd.int(-50,50))
    paci = pilot.add("Empire Pacifier", "escorts_player", enter_vect)
    paci = paci[1]
    paci:setFriendly()
    hook.pilot(paci, "death", "paci_dead")
  end
  if esc_lancelot1 then
    enter_vect:add(rnd.int(-50,50), rnd.int(-50,50))
    lance1 = pilot.add("Empire Lancelot", "escort_player", enter_vect)
    lance1 = lance1[1]
    lance1:setFriendly()
    hook.pilot(lance1, "death", "lance1_dead")
  end
  if esc_lancelot2 then
    enter_vect:add(rnd.int(-50,50), rnd.int(-50,50))
    lance2 = pilot_add("Empire Lancelot", "escort_player", enter_vect)
    lance2 = lance[2]
    lance2:setFriendly()
    hook.pilot(lance2, "death", "lance2_dead")
  end
end

-- Escort death functions -> will stop spawning.
function paci_dead()  esc_pacifier  = false end
function lanc1_dead() esc_lancelot1 = false end
function lanc2_dead() esc_lancelot2 = false end

-- Handle arrival back to base.
function land()
  local planet = space.getPlanet()

  -- Just landing.
  if(misn_stage == 2 or misn_stage == 3) and planet == misn_base then
    if trinity_alive or misn_stage == 3 then
      -- Failed to kill.
      tk.msg(title[5], text[7])
      var.push("trinity", true)

      -- Rewards.
      player.modFaction("Empire", -5)
      var.push("collective_fail", true)
    else
      -- Successfully killed.
      tk.msg(title[4], string.format(text[6], player.name()))
      var.push("trinity", false)

      -- Rewards.
      player.modFaction("Empire", 5)
    end

    misn.finish(true)

  end
end

-- Trinity hooks.
function trinity_kill() -- Got killed.
  player.msg(talk[5])
  misn_stage = 2
  trinity_alive = false
  misn.setDesc(string.format(misn_desc[2], misn_base:name(), misn_base_sys:name()))
  misn.setMarker(misn_base_sys)
end

function trinity_jump() -- Got away.
  player.msg(talk[6])
  misn_stage = 2
  trinity_alive = true
  misn.setDesc(string.format(misn_desc[2], misn_base:name(), misn_base_sys:name()))
  misn_setMarker(misn_base_sys)
end