#include <crystalspace.h>

#include <celtool/initapp.h>
#include <propclass/zone.h>
#include <propclass/camera.h>
#include <propclass/mesh.h>
#include <propclass/linmove.h>
#include <propclass/actormove.h>
#include <propclass/input.h>
#include <physicallayer/propclas.h>

#include "app.h"
#include "behave.h"

MainApp::MainApp ()
{
  SetApplicationName ("Seminar Test");
}

MainApp::~MainApp ()
{
}

bool MainApp::LoadLevel ()
{
  level_entity = pl->CreateEntity ("level", bl, "level_behave",
    "pczonemanager",
    CEL_PROPCLASS_END);
  if (!level_entity)
    return ReportError ("Error creating level entity!");

  // Now get the iPcZoneManager interface so we can setup the level.
  csRef<iPcZoneManager> zonemgr = CEL_QUERY_PROPCLASS_ENT (level_entity,
  	iPcZoneManager);
  iCelZone* zone = zonemgr->CreateZone ("main");
  iCelRegion* region = zonemgr->CreateRegion ("main");
  zone->LinkRegion (region);

  iCelMapFile* mapfile = region->CreateMapFile ();
  mapfile->SetPath ("/cellib/lev");
  mapfile->SetFile ("walktut_world");

  iCelMapFile* entitiesfile = region->CreateMapFile ();
  entitiesfile->SetPath ("/cellib/lev");
  entitiesfile->SetFile ("walktut_entities");

  return true;
}

bool MainApp::CreatePlayer ()
{
  player_entity = pl->CreateEntity ("player", bl, "player_behave",
    "pcdefaultcamera",
    "pcmesh",
    "pclinearmovement",
    "pcactormove",
    "pccommandinput",
    "pcinventory",
    CEL_PROPCLASS_END);
  if (!player_entity)
    return ReportError ("Error creating player entity!");

  // Get the iPcCamera interface so that we can set the camera.
  csRef<iPcCamera> pccamera = CEL_QUERY_PROPCLASS_ENT (player_entity, iPcCamera);
  // Get the zone manager from the level entity which should have been created
  // by now.
  csRef<iPcZoneManager> pczonemgr = CEL_QUERY_PROPCLASS_ENT (level_entity,
  	iPcZoneManager);
  pccamera->SetZoneManager (pczonemgr, true, "main", "Camera");

  // Get the iPcMesh interface so we can load the right mesh
  // for our player.
  csRef<iPcMesh> pcmesh = CEL_QUERY_PROPCLASS_ENT (player_entity, iPcMesh);
  pcmesh->SetPath ("/cel/data");
  pcmesh->SetMesh ("test", "cally.cal3d");
  if (!pcmesh->GetMesh ())
    return ReportError ("Error loading model!");

  if (pczonemgr->PointMesh ("player", "main", "Camera"))
    return ReportError ("Can't find region or start position in region!");

  // Get iPcLinearMovement so we can setup the movement system.
  csRef<iPcLinearMovement> pclinmove = CEL_QUERY_PROPCLASS_ENT (player_entity,
  	iPcLinearMovement);
  pclinmove->InitCD (
  	csVector3 (0.5f,0.8f,0.5f),
  	csVector3 (0.5f,0.4f,0.5f),
  	csVector3 (0,0,0));

  // Get the iPcActorMove interface so that we can set movement speed.
  csRef<iPcActorMove> pcactormove = CEL_QUERY_PROPCLASS_ENT (player_entity, iPcActorMove);
  pcactormove->SetMovementSpeed (3.0f);
  pcactormove->SetRunningSpeed (5.0f);
  pcactormove->SetRotationSpeed (1.75f);

  // Get iPcCommandInput so we can do key bindings. The behaviour layer
  // will interprete the commands so the actor can move.
  csRef<iPcCommandInput> pcinput = CEL_QUERY_PROPCLASS_ENT (player_entity,
  	iPcCommandInput);
  // We read the key bindings from the standard config file.
  pcinput->Bind ("up", "forward");
  pcinput->Bind ("down", "backward");
  pcinput->Bind ("left", "rotateleft");
  pcinput->Bind ("right", "rotateright");
  pcinput->Bind ("m", "cammode");
  pcinput->Bind ("d", "drop");

  return true;
}

void MainApp::ProcessFrame ()
{
}

void MainApp::FinishFrame ()
{
  // Just tell the 3D renderer that everything has been rendered.
  g3d->FinishDraw ();
  g3d->Print (0);
}

bool MainApp::OnKeyboard(iEvent& ev)
{
  // We got a keyboard event.
  csKeyEventType eventtype = csKeyEventHelper::GetEventType(&ev);
  if (eventtype == csKeyEventTypeDown)
  {
    // The user pressed a key (as opposed to releasing it).
    utf32_char code = csKeyEventHelper::GetCookedCode(&ev);
    if (code == CSKEY_ESC)
    {
      // The user pressed escape to exit the application.
      // The proper way to quit a Crystal Space application
      // is by broadcasting a cscmdQuit event. That will cause the
      // main runloop to stop. To do that we get the event queue from
      // the object registry and then post the event.
      csRef<iEventQueue> q =
        CS_QUERY_REGISTRY(GetObjectRegistry(), iEventQueue);
      if (q.IsValid()) q->GetEventOutlet()->Broadcast(
	  csevQuit (GetObjectRegistry ()));
    }
  }
  return false;
}

bool MainApp::OnInitialize (int argc, char* argv[])
{
  if (!celInitializer::RequestPlugins (object_reg,
        CS_REQUEST_VFS,
    	CS_REQUEST_OPENGL3D,
    	CS_REQUEST_ENGINE,
    	CS_REQUEST_FONTSERVER,
    	CS_REQUEST_IMAGELOADER,
    	CS_REQUEST_LEVELLOADER,
    	CS_REQUEST_REPORTER,
    	CS_REQUEST_REPORTERLISTENER,
    	CS_REQUEST_PLUGIN ("cel.physicallayer", iCelPlLayer),
    	CS_REQUEST_PLUGIN ("crystalspace.collisiondetection.opcode",
		    iCollideSystem),
      CS_REQUEST_END))
    return ReportError ("Can't initialize plugins!");

  csBaseEventHandler::Initialize(object_reg);

  if (!RegisterQueue(object_reg, csevAllEvents(object_reg)))
    return ReportError ("Can't setup event handler!");

  return true;
}

bool MainApp::Application ()
{
  if (!OpenApplication (object_reg))
    return ReportError ("Error opening system!");

  g3d = CS_QUERY_REGISTRY (object_reg, iGraphics3D);
  engine = CS_QUERY_REGISTRY (object_reg, iEngine);
  loader = CS_QUERY_REGISTRY (object_reg, iLoader);
  vfs = CS_QUERY_REGISTRY (object_reg, iVFS);
  vc = CS_QUERY_REGISTRY (object_reg, iVirtualClock);
  kbd = CS_QUERY_REGISTRY (object_reg, iKeyboardDriver);

  pl = CS_QUERY_REGISTRY (object_reg, iCelPlLayer);
  bl.AttachNew (new BehaviourLayer(pl));

  // We also need to register it to the object registry.
  if (!object_reg->Register (bl, "iCelBlLayer"))
    return ReportError ("Can't register our behaviour layer!");

  // Make sure the application dir is mounted at /cel
  vfs->Mount ("cel", "$.$/");

  pl->RegisterBehaviourLayer (bl);
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.zonemanager"))
    return ReportError ("Error loading pczonemanager factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.solid"))
    return ReportError ("Error loading pcsolid factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.colldet"))
    return ReportError ("Error loading pccolldet factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.defaultcamera"))
    return ReportError ("Error loading pcdefaultcamera factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.mesh"))
    return ReportError ("Error loading pcmesh factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.meshselect"))
    return ReportError ("Error loading pcmeshselect factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.linmove"))
    return ReportError ("Error loading pclinmove factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.pccommandinput"))
    return ReportError ("Error loading pccommandinput factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.actormove"))
    return ReportError ("Error loading pcactormove factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.inventory"))
    return ReportError ("Error loading pcinventory factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.properties"))
    return ReportError ("Error loading pcproperties factory!");
  if (!pl->LoadPropertyClassFactory ("cel.pcfactory.timer"))
    return ReportError ("Error loading pctimer factory!");

  if (!LoadLevel ())
    return ReportError ("Error loading level!");
  if (!CreatePlayer ())
    return ReportError ("Couldn't create player!");

  Run ();

  return true;
}