// form.js

// copyright (c) 2009-2011 Mark Butler
// This program is free software; you can redistribute it 
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation;
// either version 2 of the License, or (at your option) any later version. 

// main classes for wargame
var mapData;
var force;
var terrain;
var moveRules;
var combatRules;
var gameRules;
var prompt

// map image data
var mapOffsetX;
var mapOffsetY;

// mapGrid values
// global constants
var OriginX;
var OriginY;
var TopHexagonHeight;
var BottomHexagonHeight;
var HexagonEdgeWidth;
var HexagonCenterWidth;
var MaxRightHexagon;
var MaxBottomHexagon;
// counter image values
var oneHalfImageWidth;
var oneHalfImageHeight;

var maxTurn;

// textboxes on form
var gameStatusText;
var hexagonText;
var terrainText;
var counterText;
var promptText;

// ------- initialize classes ------------------------------
mapData = new MapData();
force = new Force();
terrain = new Terrain();
moveRules = new MoveRules(force, terrain);
combatRules = new CombatRules(force, terrain);
gameRules = new GameRules(moveRules, combatRules, force);
prompt = new Prompt(gameRules, moveRules, combatRules, force, terrain);
// ------- end initialize classes --------------------------
	
function mapMouseMove(event) {

	var mapGrid;
	mapGrid = new MapGrid(mapData);
	var hexagon;

	var pixelX, pixelY;
 	// get pixel coordinates
	// this for Netscape browsers
	if ( document.addEventListener ) {
		pixelX = event.pageX - event.target.offsetLeft;
		pixelY = event.pageY - event.target.offsetTop;
	}
	// this for IE browsers
	else {
		pixelX =  event.offsetX;
		pixelY =  event.offsetY;
	}
	
 	// update form text
	mapGrid.setPixels( pixelX, pixelY );

	hexagonText.innerHTML = " ";
	terrainText.innerHTML = " ";

	if( terrain.terrainIs(mapGrid.hexagon, "offmap") == false)
	{
		hexagonText.innerHTML = mapGrid.hexagon.getName();
		hexagonText.innerHTML += " ";

		terrainText.innerHTML = terrain.getTerrainDisplayName(mapGrid.getHexpart());
		terrainText.innerHTML += terrain.getTownName(mapGrid.getHexagon());
		terrainText.innerHTML +=  " "
	}
    promptText.innerHTML = prompt.getPrompt(OVER_MAP_EVENT, MAP, mapGrid.getHexagon());
    promptText.innerHTML += " ";
	counterText.innerHTML = "&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;";
}

function mapMouseDown(event) {

	var mapGrid;
	mapGrid = new MapGrid(mapData);

	var pixelX, pixelY;
 	// get pixel coordinates
	// this for Netscape browsers
	if ( document.addEventListener ) {
		pixelX = event.pageX - event.target.offsetLeft;
		pixelY = event.pageY - event.target.offsetTop;
	}
	// this for IE browsers
	else {
		pixelX =  event.offsetX;
		pixelY =  event.offsetY;
	}

	mapGrid.setPixels(pixelX, pixelY);

	gameRules.processEvent(SELECT_MAP_EVENT, MAP, mapGrid.getHexagon() );

	updateForm();
}

function mapMouseOut(event) {

 	// this for all browsers
	hexagonText.innerHTML = "&nbsp;";
	terrainText.innerHTML = "&nbsp;";
	counterText.innerHTML = "&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;";
    promptText.innerHTML = "&nbsp;";
    window.defaultStatus = "";
}
 
function counterMouseMove(event) {

 	var id;

 	if (document.addEventListener) {
		id = event.target.id.toString();
	}
	// this for IE browsers
	else {
		id = event.srcElement.id.toString();
	}
	
    // update form text
    var hexagon = force.getUnitHexagon(id);   
	var hexpart = new Hexpart(hexagon.getX(), hexagon.getY());

	hexagonText.innerHTML = "&nbsp;";
	terrainText.innerHTML = "&nbsp;";
	
	if ( terrain.isOnMap(hexagon) == true && force.units[id].status != STATUS_CAN_REINFORCE ) {
		hexagonText.innerHTML = hexagon.getName();
		hexagonText.innerHTML += "&nbsp;";
		
		terrainText.innerHTML = terrain.getTerrainDisplayName(hexpart);
    
		terrainText.innerHTML += terrain.getTownName(hexagon);
		terrainText.innerHTML +=  "&nbsp;"
	}

	counterText.innerHTML = force.getUnitInfo( id );
    promptText.innerHTML = prompt.getPrompt(OVER_COUNTER_EVENT, id, hexagon);
    promptText.innerHTML += "&nbsp;";
}
 
function counterMouseDown(event) {

 	var id;
	if ( document.addEventListener ) {
		id = event.target.id.toString();
	}
	// this for IE browsers
	else {
		id = event.srcElement.id.toString();
	}
	
	gameRules.processEvent( SELECT_COUNTER_EVENT, id, force.getUnitHexagon(id) );

	updateForm();
}
 
function nextPhaseMouseDown(event) {

	gameRules.processEvent( SELECT_BUTTON_EVENT, "nextPhase", 0, 0 );
	updateForm();
}
 
function attachMouseEventsToMap(objectName) {

 	object = document.getElementById(objectName);
 	// this for Netscape browsers
	if ( object.addEventListener ) {
		object.addEventListener("mousemove", mapMouseMove, true);
		object.addEventListener("mousedown", mapMouseDown, true);
		object.addEventListener("mouseout", mapMouseOut, true);
	}
	// this for IE browsers
	else {
		object.attachEvent("onmousemove", mapMouseMove);
		object.attachEvent("onmousedown", mapMouseDown);
		object.attachEvent("onmouseout", mapMouseOut);
	}

	mapOffsetX = parseInt(object.style.left);
	mapOffsetY = parseInt(object.style.top);

	return true;
}
  
function attachMouseEventsToCounter(objectName) {

 	var id;
	id = parseInt(objectName, 10);

 	object  = document.getElementById(objectName);

 	// this for Netscape browsers
	if ( object.addEventListener ) {
		object.addEventListener("mousemove", counterMouseMove, true);
		object.addEventListener("mousedown", counterMouseDown, true);
		object.addEventListener("mouseout", mapMouseOut, true);
		return true;
	}
	// this for IE browsers
	else {
		object.attachEvent("onmousemove", counterMouseMove);
		object.attachEvent("onmousedown", counterMouseDown);
		object.attachEvent("onmouseout", mapMouseOut);
		return true;
	}
}
 
function attachMouseEventsToButton(objName) {

 	obj = document.getElementById(objName);
 	if ( obj.addEventListener != null ) {
		obj.addEventListener("mousedown", this.nextPhaseMouseDown, true);
		return true;
	}
	else {
		obj.attachEvent("onmousedown", this.nextPhaseMouseDown);
		return true;
	}
}

function moveCounter(id) {

 	var mapGrid;
	mapGrid = new MapGrid(mapData);
	
	var counterObj;
 	counterObj = document.getElementById( id );
 	
 	mapGrid.setHexagonXY( this.force.getUnitHexagon(id).getX(), this.force.getUnitHexagon(id).getY());
 	
 	var x = mapGrid.getPixelX() - (document.getElementById("map").width) - (parseInt(id) * document.getElementById(id).width) - (document.getElementById(id).width / 2);
 	//x = - document.getElementById("map").width;
 	//if (id == 0) alert(x);
 	//x = 0;
 	counterObj.style.left = x + "px";
 	var y = mapGrid.getPixelY() - (document.getElementById(id).height / 2);
 	//y = 0;
 	counterObj.style.top = y + "px";
}

function updateForm() {
	var id;

	for ( id = 0; id < force.units.length; id++ ) {
			this.moveCounter( id );
	}
	gameStatusText.innerHTML = gameRules.getInfo();
}

function createImage(id, src, x, y)
{
    var newImage = document.createElement("img");
    newImage.setAttribute("id", id);
    newImage.setAttribute("alt", id);
    newImage.setAttribute("src", src);
    newImage.setAttribute("class", "counter");
    newImage.style.position = "relative";
    newImage.style.left = x + "px";
    newImage.style.top = y + "px";
    
    document.getElementById("gameImages").appendChild(newImage);
}

function initialize() {
 	
	// setup events --------------------------------------------
 	this.attachMouseEventsToMap("map");
 	
 	var id;

	for ( id = 0; id < force.units.length; id++ ) {
    		createImage( id, force.units[id].image, 0, 0 );
		this.attachMouseEventsToCounter( id );
	}

	attachMouseEventsToButton("nextPhaseButton");
	// end setup events ----------------------------------------

	// for web browsers that have addEventListener
 	//if ( document.addEventListener ) {
		gameStatusText = document.getElementById("gameStatusText");
		hexagonText = document.getElementById("hexagonText");
		terrainText = document.getElementById("terrainText");
		counterText = document.getElementById("counterText");
		promptText = document.getElementById("promptText");
	//}
	
	counterText.innerHTML = "counter&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;<br />&nbsp;";
	
	//mapText.innerHTML = this.terrain.getTerrainList();
	
	updateForm();
}