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painter.js
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painter.js
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/*All code copyright 2010 by Jay Crossler - CC BY/3.0 license */
//ToDo: Checking browser type is a kludge
var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
var is_firefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;
var Painter = {
currentLayer: 0,
tileToPaint: 0,
optionPainterSelect: 0,
init: function(){
drawImageOnCanvas("painter_palette","images/tiles.png");
Painter.listSelectableMaps("listofmaps");
},
addCanvasEvents: function(){
document.body.addEventListener('touchmove',ev_touch_body,false);
window.addEventListener('resize',Painter.sizeCanvasToMax,false);
var canv_obj = document.getElementById('main_canvas');
canv_obj.addEventListener('mousemove', ev_mousemove, false);
canv_obj.addEventListener('mouseup', ev_mouseup, false);
canv_obj.addEventListener('mousedown', ev_mousedown, false);
canv_obj.addEventListener('touchstart', touchHandler, false);
canv_obj.addEventListener('touchmove', touchHandler, false);
canv_obj.addEventListener('touchend', touchHandler, false);
canv_obj.addEventListener("touchcancel", touchHandler, true);
var paint_obj = document.getElementById('painter_palette');
paint_obj.addEventListener('click', ev_click_painter, false);
Painter.optionPainterSelect = document.getElementById('painter_layer_num');
Painter.optionPainterSelect.addEventListener('change', ev_change_painter, false);
var footer_obj = document.getElementById('bottomLeft');
footer_obj.addEventListener('touchmove', ev_click_footer, false);
// footer_obj.addEventListener('click', ev_click_footer, false);
},
setLayerOptions: function(){ //add new message
if(Painter.optionPainterSelect){
for (var i=0;i<Game.numLayers;i++) {
var opt_new = new Option(Game.tileEngine[i].layerName, i, false, false);
Painter.optionPainterSelect.options[i] = opt_new;
}
}
},
sizeCanvasToMax: function(){
if (Game && Game.tileEngine) {
var canv = Game.tileEngine[0].canvas; //TODO: Move Canvas out of TileEngine
if (canv) {
var ctx = canv.getContext("2d");
//Set the canvas height based on the 1st layer size
canv.setAttribute('width', document.body.clientWidth);
canv.setAttribute('height', document.body.clientHeight);
// ctx.fillStyle = "rgb(1,1,1)";
// ctx.fillRect (0,0, canv.clientWidth, canv.clientHeight);
Game.hasChanged = true;
//Game.tileEngine[0].canvas.setAttribute('width', (Game.tileEngine[0].tilesWide * Game.tileEngine[0].tileWidth)); //set attributes of canvas
//Game.tileEngine[0].canvas.setAttribute('height', (Game.tileEngine[0].tilesHigh * Game.tileEngine[0].tileHeight));
}
}
},
listSelectableMaps: function(divContainer){
var listHolder = document.getElementById(divContainer);
var MapsList = MapModel.listMaps("local");
var strItems = '<span onclick="MapModel.saveCurrentMap();">[SAVE]</span><br/>';
for (var i=0;i<10;i++) { //TODO: Update beyond temp
if (MapsList[i])
strItems += "<span onclick='MapModel.loadMapById("+i+");'>" + MapsList[i] + "</span> " +
"[<span onclick='MapModel.deleteMap("+i+");'>DEL</span>]<br/>";
}
listHolder.innerHTML = strItems;
}
};
function ev_touch_body(event) {
// Tell Safari not to move the window.
event.preventDefault() ;
}
var isfooterdown = true;
function ev_click_footer(event) {
var footer_obj = document.getElementById('bottomLeft');
if (isfooterdown) {
footer_obj.style.height = (document.getElementById('painter_palette').height+30)+"px";
// //TODO: Make based on amount of Mouse Move
footer_obj.style.width = document.getElementById('painter_palette').width+"px";
isfooterdown = false;
} else {
footer_obj.style.height = "60px";
footer_obj.style.width = "150px";
isfooterdown = true;
}
}
//----------------
//From: http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript
//Intercepts iOs and Android touch events, turns into drag events
function touchHandler(event)
{
var touches = event.changedTouches,
first = touches[0],
type = "";
switch(event.type)
{
case "touchstart": type="mousedown"; break;
case "touchmove": type="mousemove"; break;
case "touchend": type="mouseup"; break;
default: return;
}
//initMouseEvent(type, canBubble, cancelable, view, clickCount,
// screenX, screenY, clientX, clientY, ctrlKey,
// altKey, shiftKey, metaKey, button, relatedTarget);
var simulatedEvent = document.createEvent("MouseEvent");
simulatedEvent.initMouseEvent(type, true, true, window, 1,
first.screenX, first.screenY,
first.clientX, first.clientY, false,
false, false, false, 0/*left*/, null);
first.target.dispatchEvent(simulatedEvent);
event.preventDefault();
}
//----------------
var isMouseDownOnCanvas = false;
function ev_mousemove (ev) {
var coords = getCoords(ev);
var tilepos = MapModel.tileScreenXYBasedOnMouseOverXY(coords.x,coords.y);
var zoneinf = MapModel.zoneAndTileNumBasedOnMapXY(tilepos.x, tilepos.y);
var tileval = MapModel.tileValBasedOnArrayNum(MapModel.tileArrayNumBasedOnMapXY(tilepos.x, tilepos.y));
Message.newMessageSingle("Tile: " + tilepos.x + " " + tilepos.y + " - Zone:" + zoneinf.zone + " Tile:" + zoneinf.tile + " - Val:" + tileval);
if(isMouseDownOnCanvas) {
MapModel.updateMapTileAtXY(tilepos.x, tilepos.y, Painter.tileToPaint);
Game.hasChanged = true;
}
};
function ev_mousedown (ev) {
isMouseDownOnCanvas = true;
var coords = getCoords(ev);
Game.fps = 0.1;
Game.startTimer();
var tiles = MapModel.tileScreenXYBasedOnMouseOverXY(coords.x,coords.y);
MapModel.updateMapTileAtXY(tiles.x, tiles.y, Painter.tileToPaint);
Game.hasChanged = true;
};
function ev_mouseup (ev) {
isMouseDownOnCanvas = false;
Game.fps = Game.fpsOld;
Game.startTimer();
};
//-------------------
function ev_click_painter (ev) {
var canvas = ev.currentTarget;
var coords = getCoords(ev);
var i = Painter.currentLayer;
var pos_x=0, pos_y=0, tile=0, border_size=0;
pos_x = Math.floor(coords.x / Game.tileEngine[i].tileWidth);
pos_y = Math.ceil(coords.y / Game.tileEngine[i].tileHeight);
tile = ((pos_y -1) * Game.tileEngine[i].sourceTileAcross) + pos_x;
Message.newMessageSingle("Tile to paint with: #" + tile + " from layer " + i);
Painter.tileToPaint = tile;
};
function ev_change_painter (ev) {
var i = Painter.optionPainterSelect.selectedIndex;
Painter.currentLayer = i;
Painter.tileToPaint = 0;
drawImageOnCanvas("painter_palette",Game.tileEngine[i].sourceFiles);
if (!isfooterdown) {
var img = new Image();
img.onload = function(){
document.getElementById('bottomLeft').style.width = img.width+"px";
document.getElementById('bottomLeft').style.height = (img.height+30)+"px";
}
img.src = Game.tileEngine[i].sourceFiles;
}
}
//-------------------
function drawImageOnCanvas(canvasid, imgsrc) {
var canv= document.getElementById(canvasid);
if (canv) {
var ctx = canv.getContext('2d');
var img = new Image();
img.onload = function(){
canv.width = img.width;
canv.height = img.height;
ctx.drawImage(img,0,0);
}
img.src = imgsrc;
}
}
function getCoords(e) {
var posx = 0;
var posy = 0;
if (!e) var e = window.event;
if (e.pageX || e.pageY) {
posx = e.pageX;
posy = e.pageY;
}
else if (e.clientX || e.clientY) {
posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
posy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
}
if (e.currentTarget) {
//ToDo: Recursively find parent's OffsetTops, not just one level up
posx -= (e.currentTarget.offsetLeft + e.currentTarget.parentNode.offsetLeft) ;
posy -= (e.currentTarget.offsetTop + e.currentTarget.parentNode.offsetTop);
}
// posx and posy contain the mouse position relative to the document
// Do something with this information
return {"x": posx, "y": posy};
}