/* Author: Josh Holtrop
 * DornerWorks screensaver
 * This was a for-fun project I started working on in November '07
 * because I like 3D graphics. I modeled the DornerWorks logo in
 * blender, exported it to an Alias WaveFront object and material
 * file, wrote an Alias Wavefront object loader, and then wrapped
 * some OpenGL and ODE logic around it for various screensaver modes
 */

#include <iostream>
#include <string>
#include <SDL/SDL.h>
#include <SDL/SDL_syswm.h>
#include "displayinfo.h"
#include "ss/SSMain.h"
using namespace std;

#define PROGNAME "dwscr"
#define DEFAULT_WIDTH  1024
#define DEFAULT_HEIGHT 768

/* main function, called upon program invocation */
int main(int argc, char * argv[])
{
	const string startString = "/s";
#ifdef WIN32
	bool start = false;
#else
    bool start = true;
#endif
	SDL_Surface * sdlSurface;
	int width = DEFAULT_WIDTH;
	int height = DEFAULT_HEIGHT;

#ifdef DEBUG
	start = true;
#endif

	/* make the SDL window appear in the top-left corner of the screen */
	putenv("SDL_VIDEO_WINDOW_POS=0,0");

    /* do not disable power management (this will allow monitors
     * to power off at the normally configured timeout) */
    putenv("SDL_VIDEO_ALLOW_SCREENSAVER=1");

    /* extremely simple command-line argument handling */
	for (int i = 1; i < argc; i++)
	{
		if (startString == argv[i])
			start = true;
	}

	if (!start)
		return 0;

	getDisplaySize(&width, &height);

    /* initialize SDL library */
	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER))
	{
		cerr << "Error initializing video!" << endl;
		return -1;
	}

    SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

	/* Enable multisampling */
	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);

	if ((sdlSurface = SDL_SetVideoMode(width, height, 0,
					                   SDL_HWSURFACE
#ifndef WINDOW_MODE
					                 | SDL_NOFRAME
#endif
					                 | SDL_OPENGL)) == NULL)
	{
		cerr << "Error setting video mode!" << endl;
		return -2;
	}

    SDL_WM_SetCaption("dwscr", "dwscr");
#ifndef WINDOW_MODE
	SDL_WM_GrabInput(SDL_GRAB_ON);
	SDL_ShowCursor(SDL_DISABLE);
#endif

    /* after our window is created and SDL and OpenGL are initialized,
     * start the main screensaver functionality */
	SSMain ss(width, height, getNumMonitors(), sdlSurface);
	ss.run();

	SDL_Quit();
	return 0;
}