#include "menu.h"
#include "font.h"
#include "screen.h"
#include "game.h"

// XXX: WARNING
//
// THIS CODE IS VERY MESSY; DON'T READ UNLESS YOU PLAN TO REWRITE IT. :)
//

OGLFT::Monochrome *face=0;

unsigned int selected = 0;
unsigned int num_menus = 0;


struct Menu
{
	char *text;
	void (*func)(Controller*);
};

Menu menu[7];

void (*menu_func)();
void (*quit_func)(Controller *);


void draw_menus()
{
	face->setPointSize(14);
	int xo = 100, yo = 150;

	for (unsigned int i = 0; i < num_menus; ++i)
	{
		if (selected == i)
			face->setForegroundColor(1, 1, 0);
		else face->setForegroundColor(1, 1, 1);
		face->draw(xo, Screen::mDisplay.y-yo-20*i, menu[i].text);
	}
}

void MenuExec(Controller *c)
{
	menu[selected].func(c);
}

void MenuUp()
{
	if (selected == 0) selected = num_menus-1;
	else selected--;
}
void MenuDown()
{
	if (selected == (num_menus-1)) selected = 0;
	else selected++;
}

void start_game(Controller*)
{
	Game::getInstance()->setMode(Game::PLAY);
}

void main_menu();

void go_main_menu(Controller*c)
{
	main_menu();
}

void configure(Controller*)
{
	selected = 0;
	num_menus = 6;

	menu[0].text = "Game Mode";
	menu[0].func = configure;

	menu[1].text = "Difficulty";
	menu[1].func = configure;

	menu[2].text = "Control";
	menu[2].func = configure;

	menu[3].text = "Video";
	menu[3].func = configure;
	
	menu[4].text = "Audio";
	menu[4].func = configure;

	menu[5].text = "<return to main menu>";
	menu[5].func = go_main_menu;

	quit_func = go_main_menu;
}

void quit(Controller*c) { c->setQuit(); }

void main_menu()
{
	selected = 0;
	num_menus = 3;

	menu[0].text = "Start Game";
	menu[0].func = start_game;

	menu[1].text = "Configure";
	menu[1].func = configure;

	menu[2].text = "Quit SSC";
	menu[2].func = quit;

	quit_func = quit;
}


void DrawHeading()
{
	draw::setColor(0, 0, 0, .5);
	draw::box(0, 0, Screen::mDisplay.x, Screen::mDisplay.y);
	if (!face)
	{
		face = new OGLFT::Monochrome("/usr/local/share/ssc/Vera.ttf");
		if (!face || !face->isValid())
		{
			fprintf(stderr, "Could not open metalang.ttf!\n");
			exit(0);
		}
	}
	if (!menu_func)
	{
		menu_func = main_menu;
		menu_func();
	}
	if (!quit_func) quit_func = quit;

	face->setForegroundColor(1, 1, 1);
	face->setPointSize(24);
	face->draw(5, Screen::mDisplay.y-30, "SSC: Strategic Space Combat");

	draw_menus();
}

GameMenu::GameMenu()
	: mState(STATE_TITLE)
{
}