pause.cpp

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//            Copyright (C) 2004-2007 by The Allacrost Project
//                         All Rights Reserved
//
// This code is licensed under the GNU GPL version 2. It is free software 
// and you may modify it and/or redistribute it under the terms of this license.
// See http://www.gnu.org/copyleft/gpl.html for details.

#include "utils.h"
#include <iostream>
#include "pause.h"
#include "audio.h"
#include "video.h"
#include "input.h"
#include "system.h"

using namespace std;
using namespace hoa_audio;
using namespace hoa_video;
using namespace hoa_mode_manager;
using namespace hoa_input;
using namespace hoa_system;

namespace hoa_pause {

bool PAUSE_DEBUG = false;

// Constructor changes audio, saves currently rendered screen, and draws "Paused" text
PauseMode::PauseMode() {
  if (PAUSE_DEBUG) cout << "PAUSE: PauseMode constructor invoked" << endl;

  mode_type = MODE_MANAGER_PAUSE_MODE;
  // Adjust the volume while in paused mode acordingly
//  switch (SystemManager->GetPauseVolumeAction()) {
//    case SETTINGS_PAUSE_AUDIO:
//      AudioManager->PauseAudio();
//      break;
//    case SETTINGS_ZERO_VOLUME:
//      AudioManager->SetMusicVolume(0);
//      AudioManager->SetSoundVolume(0);
//      break;
//    case SETTINGS_HALF_VOLUME:
// //       AudioManager->SetMusicVolume(static_cast<int32>(SystemManager->music_vol * 0.5));
// //       AudioManager->SetSoundVolume(static_cast<int32>(SystemManager->sound_vol * 0.5));
//      break;
//    // Don't need to do anything for the case SETTINGS_SAME_VOLUME
//  }

  // Save a copy of the current screen to use as a backdrop
  if (!VideoManager->CaptureScreen(_saved_screen)) 
    if (PAUSE_DEBUG) cerr << "PAUSE: ERROR: Couldn't save the screen!" << endl;
}



// The destructor might possibly have to free the "Paused" image...
PauseMode::~PauseMode() {
  if (PAUSE_DEBUG) cout << "PAUSE: PauseMode destructor invoked" << endl;

//  // Restore the game audio/volume levels appropriately
//  switch (SystemManager->GetPauseVolumeAction()) {
//    case SETTINGS_PAUSE_AUDIO:
//      AudioManager->ResumeAudio();
//      break;
//    case SETTINGS_ZERO_VOLUME:
//    case SETTINGS_HALF_VOLUME:
// //       AudioManager->SetMusicVolume(SystemManager->music_vol);
// //       AudioManager->SetSoundVolume(SystemManager->sound_vol);
//      break;
//    default: // Don't need to do anything for case SETTINGS_SAME_VOLUME
//      break;
//    
//  }

  // Release the saved screen frame.
  VideoManager->DeleteImage(_saved_screen);
}


// Called whenever PauseMode is put on top of the stack
void PauseMode::Reset() {
  // Setup video engine constructs.
  VideoManager->SetCoordSys(0, 1024, 0, 768);
  if(!VideoManager->SetFont("default")) 
    cerr << "MAP: ERROR > Couldn't set map font!" << endl;
  VideoManager->SetDrawFlags(VIDEO_X_LEFT, VIDEO_Y_BOTTOM, 0);
}


// The true logic is all handled in GameSystem::KeyEventHandler() instead of this function.
void PauseMode::Update() { 
  // Don't eat up 100% of the CPU time when we're in pause mode
  SDL_Delay(50);
}



// Nothing to draw since the screen never changes in pause mode (maybe we should call SDL_Delay here?)
void PauseMode::Draw() {
  // Draw the background image
  // For that, set the system coordinates to the size of the window (same with the save-screen)
  int32 width = VideoManager->GetWidth();
  int32 height = VideoManager->GetHeight();
  VideoManager->SetCoordSys (0.0f, static_cast<float>(width), 0.0f, static_cast<float>(height));

  Color grayed(0.35f, 0.35f, 0.35f, 1.0f);
  VideoManager->SetDrawFlags(VIDEO_X_LEFT, 0);
  VideoManager->Move(0,0);
  VideoManager->DrawImage(_saved_screen, grayed);
  
  // Render the "Paused" text to appear on the center of the screen
  // Restore the Coordinate system (that one is quit mode coodinate system)
  VideoManager->SetCoordSys (0.0f, 1024.0f, 0.0f, 768.0f);

  VideoManager->SetDrawFlags(VIDEO_X_CENTER, 0);
  VideoManager->Move(512, 384);
  VideoManager->DrawText("Paused");
}

} // namespace hoa_pause

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