// Copyright (C) 2008 Robert W. Clarke Consulting, all rights reserved.
// do not remove this copyright notice

// Global vars ----------------------------------------------------------------------------------

var ary_state_status = new Array();
var ary_unclicked_states = new Array();
var current_state;
var game_status = "init";
var game_level;

// Map XML --------------------------------------------------------------------------------------

function updateMap(){ // called by selectState function every time user clicks on a state
	// this function generates the xml to configure the map based the array of selected states
	var ary_colors = new Array();
	ary_colors['correct'] = "00FF00"; // green
	ary_colors['wrong'] = "FF0000"; // red
	ary_colors['noclick'] = "FFFFFF"; // white
	ary_colors['roll'] = "666666"; // gray
	
	var state_code, xml_state, re, color, rcolor, ncolor, state_status, state_action;
	var xml_state_tmpl = '<state id="_ID_" ncolor="_NCOLOR_" rcolor="_RCOLOR_" action="_ACTION_" />';
	var action_template = "javascript:selectState(\'_ID_\')";
	
	// start the xml
	var xml = '<?xml version="1.0" encoding="iso-8859-1" ?><MT1022>'; // start the xml
	xml += '<global state_initials="off" state_name="_SN_" action_target="_self" />';
	
	// set state name visibility on mouseover based oneasy or difficult level
	var sn_visibility = "off";
	if(game_level == "easy"){
		sn_visibility = "on";
	}
	if(game_status == "end"){
		sn_visibility = "off";
	}
	re = /_SN_/;
	xml = xml.replace(re,sn_visibility);
	
	for(state_code in ary_state_name){ // loop through each state
		xml_state = xml_state_tmpl; // set to state template xml
		
		// set the ID
		re = /_ID_/g;
		xml_state = xml_state.replace(re,state_code); // replace id

	
		// get the status of the state
		state_status = ary_state_status[state_code]; // -1 for wrong, 0 for noclick, 1 for correct
		
		// make the state action
		if(state_status == 0){ // never clicked
			re = /_ID_/;
			state_action = action_template.replace(re,state_code);
		} else { // already clicked no further clicks on the state
			state_action = "";
		}
		if(game_status == "end"){  // game has ended, no rollovers, no further clicking
			state_action = "";
		}
		re = /_ACTION_/g;
		xml_state = xml_state.replace(re,state_action); // replace ACTION
				
		// set state normal and roll colors
		if(state_status == 0){ // never clicked
			if(game_status == "end"){ // game has ended, no rollovers, no further clicking
				ncolor = ary_colors['noclick'];
				rcolor = ncolor;
			} else {
				ncolor = ary_colors['noclick'];
				rcolor = ary_colors['roll'];
			}
		} else { // already clicked
			if(state_status > 0){ // correct
				ncolor = ary_colors['correct'];
			} else { // wrong
				ncolor = ary_colors['wrong'];
			}
			rcolor = ncolor; // no longer rolls over
		}
		re = /_NCOLOR_/g;
		xml_state = xml_state.replace(re,ncolor);
		re = /_RCOLOR_/g;
		xml_state = xml_state.replace(re,rcolor);
		
		xml += xml_state; // append xml
	}
	
	xml += '</MT1022>'; // finish xml
	
	// update the map
	sendXML(xml);
}

function sendXML(xml){
	// this function sends the xml to the map
	// the map receives the xml and configures itself automatically
	if(window.maptron){
		window.document["maptron"].SetVariable("jxml", xml);
	}
	if(document.maptron){
		document.maptron.SetVariable("jxml", xml);
	}
}

// Game Control ----------------------------------------------------------------------------------

function initGame(){
	document.forms.gamecontrol.time.value = 0;
	document.forms.gamecontrol.score.value = 0;
	document.forms.gamecontrol.ss.value = "START";
	document.forms.gamecontrol.state.value = "Click on START button";
	document.forms.gamecontrol.correct.value = 0;
	document.forms.gamecontrol.incorrect.value = 0;
	disableLevelSelection(false);
	document.forms.gamecontrol.level[0].checked = true;
	game_status = "ready";
}

function resetUnclickedStates(){ // called by newGame()
	var sc
	for(sc in ary_state_name){
		ary_unclicked_states.push(sc);
	}
	ary_unclicked_states = shuffleArray(ary_unclicked_states); // make random
}

function resetStateStatus(){ // called by newGame()
	var sc
	for(sc in ary_state_name){
		ary_state_status[sc] = 0;
	}
}

function disableLevelSelection(directive){
	document.forms.gamecontrol.level[0].disabled = directive;
	document.forms.gamecontrol.level[1].disabled = directive;
}

function newGame(){
	// set the game level, either easy or difficult
	game_level = getSelectedRadioValue(document.forms.gamecontrol.level);
	
	// set game time
	var game_time = 180;
	if(game_level == "easy"){
		game_time += 60;
	}
	
	// reset the controls
	document.forms.gamecontrol.time.value = game_time;
	document.forms.gamecontrol.score.value = 0;
	document.forms.gamecontrol.correct.value = 0;
	document.forms.gamecontrol.incorrect.value = 0;
	document.forms.gamecontrol.ss.value = "NEXT";
	disableLevelSelection(true);
	
	// reset arrays
	resetStateStatus();
	resetUnclickedStates();

	// update the map, activates the states
	updateMap();
	nextState();
	
	interval_gametime = setInterval("updateTime()",1000); // call every second
	game_status = "run";
}

function nextState(){ // called when NEXT button is clicked, map is clicked, or newGame()
	if(ary_unclicked_states.length == 0){ // nothing left to click on
		endGame();
		return;
	}
	if(ary_unclicked_states.length > 1){ // circulate array
		var sc = ary_unclicked_states.shift(); // remove first array element
		ary_unclicked_states.push(sc); // place it at the end
	}
	current_state = ary_unclicked_states[0];
	document.forms.gamecontrol.state.value = ary_state_name[current_state];
}

function removeUnclickedState(state_code){
	// rebuild the ary_unclicked_states without the state_code
	var i;
	var ary = new Array();
	ary = ary.concat(ary_unclicked_states);
	ary_unclicked_states = new Array();
	for(i=0;i<ary.length;i++){
		if(ary[i] != state_code){
			ary_unclicked_states.push(ary[i]);
		}
	}
}

function updateScore(points){
	// update the score box
	var current_score = Math.floor(document.forms.gamecontrol.score.value);
	current_score += points;
	if(current_score < 0){current_score=0;}
	document.forms.gamecontrol.score.value = current_score;
	
	// update the correct and incorrect click text fields
	var correct_clicks = 0;
	var incorrect_clicks = 0;
	var sc
	for(sc in ary_state_name){
		if(ary_state_status[sc] < 0){
			incorrect_clicks ++;
		}
		if(ary_state_status[sc] > 0){
			correct_clicks ++;
		}
	}
	document.forms.gamecontrol.correct.value = correct_clicks;
	document.forms.gamecontrol.incorrect.value = incorrect_clicks;
}

function updateTime(){ // called by interval
	// first check to see if there are any states left to click
	if(ary_unclicked_states.length == 0){ // nothing left to click on
		endGame();
		return;
	}
	// update the time
	var time = Math.floor(document.forms.gamecontrol.time.value);
	time --;
	document.forms.gamecontrol.time.value = time;
	
	// check for timeout
	if(time <= 0){
		endGame();
		return;
	}
}

function endGame(){
	clearInterval(interval_gametime); // stop the one second interval
	game_status = "end";
	updateMap();
	
	// calculate extra points based on remaining time
	var time_remaining = Math.floor(document.forms.gamecontrol.time.value);
	if(time_remaining > 0){
		// update the score with remaining time
		var extra_points = 0;
		for(sc in ary_state_name){
			if(ary_state_status[sc] > 0){
				extra_points ++; // one point per correct state
			}
			if(ary_state_status[sc] < 0){
				extra_points --; // one point per correct state
			}
		}
		if(extra_points == ary_state_name.length){ // all correct
			extra_points += 100; // bonus 100 for all correct
		}
		if(extra_points > 0){
			updateScore(extra_points * time_remaining);
		}
	}
	
	disableLevelSelection(false);
	document.forms.gamecontrol.ss.value = "START";
	document.forms.gamecontrol.state.value = "Game over, click START for new game";
	game_status = "ready";
}

var interval_gametime;
function gameControl(btn_obj){ // called from the game START / NEXT button
	if(btn_obj.value == "START"){
		newGame();
		return;
	} 
	
	if(btn_obj.value == "NEXT"){
		updateScore(-25);
		nextState();
		return;
	}
}

// General funcitons -------------------------------------------------------------------------------

function shuffleArray(ary){
	var numbers = "_";
	var n;
	var ary_shuffled = new Array();
	while(ary_shuffled.length < ary.length){
		n = randomNumber(0,ary.length-1);
		if(numbers.indexOf("_" + n + "_") < 0){ // not already picked
			numbers += n + "_";
			ary_shuffled.push(ary[n]);
		}
	}
	return ary_shuffled;
}

function randomNumber(nmin,nmax){
	return nmin + Math.floor(Math.random() * (nmax - nmin + 1));
}

function getSelectedRadioValue(radio_obj){
	var i;
	for(i=0;i<radio_obj.length;i++){
		if(radio_obj[i].checked){
			return radio_obj[i].value;
		}
	}
}



// Selection --------------------------------------------------------------------------------------

function selectState(state_code){ // called by map when user clicks on a state
	// map clicks only apply if game is running
	if(game_status != "run"){ return; }
	
	// accept the click
	if(state_code == current_state){ // correct
		ary_state_status[state_code] = 1;
		updateScore(100);
		if(game_level == "difficult"){
			updateScore(50);
		}
	} else { // wrong
		ary_state_status[state_code] = -1;
		updateScore(-50);
	}
	removeUnclickedState(state_code);
	updateMap();
	nextState();
}

// Data --------------------------------------------------------------------------------------

// make array for state names
var ary_state_name = new Array();
ary_state_name['AL']="Alabama";
ary_state_name['AK']="Alaska";
ary_state_name['AZ']="Arizona";
ary_state_name['AR']="Arkansas";
ary_state_name['CA']="California";
ary_state_name['CO']="Colorado";
ary_state_name['CT']="Connecticut";
ary_state_name['DE']="Delaware";
ary_state_name['FL']="Florida";
ary_state_name['GA']="Georgia";
ary_state_name['HI']="Hawaii";
ary_state_name['ID']="Idaho";
ary_state_name['IL']="Illinois";
ary_state_name['IN']="Indiana";
ary_state_name['IA']="Iowa";
ary_state_name['KS']="Kansas";
ary_state_name['KY']="Kentucky";
ary_state_name['LA']="Louisiana";
ary_state_name['ME']="Maine";
ary_state_name['MD']="Maryland";
ary_state_name['MA']="Massachusetts";
ary_state_name['MI']="Michigan";
ary_state_name['MN']="Minnesota";
ary_state_name['MS']="Mississippi";
ary_state_name['MO']="Missouri";
ary_state_name['MT']="Montana";
ary_state_name['NE']="Nebraska";
ary_state_name['NV']="Nevada";
ary_state_name['NH']="New Hampshire";
ary_state_name['NJ']="New Jersey";
ary_state_name['NM']="New Mexico";
ary_state_name['NY']="New York";
ary_state_name['NC']="North Carolina";
ary_state_name['ND']="North Dakota";
ary_state_name['OH']="Ohio";
ary_state_name['OK']="Oklahoma";
ary_state_name['OR']="Oregon";
ary_state_name['PA']="Pennsylvania";
ary_state_name['RI']="Rhode Island";
ary_state_name['SC']="South Carolina";
ary_state_name['SD']="South Dakota";
ary_state_name['TN']="Tennessee";
ary_state_name['TX']="Texas";
ary_state_name['UT']="Utah";
ary_state_name['VT']="Vermont";
ary_state_name['VA']="Virginia";
ary_state_name['WA']="Washington";
ary_state_name['WV']="West Virginia";
ary_state_name['WI']="Wisconsin";
ary_state_name['WY']="Wyoming";