fteqw/engine/web/ftejslib.js

mergeInto(LibraryManager.library,
{
	//generic handles array
	//yeah, I hope you don't use-after-free. hopefully that sort of thing will be detected on systems with easier non-mangled debuggers.
	$FTEH__deps: [],
	$FTEH: {
		h: [],
		f: {}
	},

	//FIXME: split+merge by \n
	emscriptenfte_print : function(msg)
	{
		FTEC.linebuffer += Pointer_stringify(msg);
		for(;;)
		{
			nl = FTEC.linebuffer.indexOf("\n");
			if (nl == -1)
				break;
			console.log(FTEC.linebuffer.substring(0, nl));
			FTEC.linebuffer = FTEC.linebuffer.substring(nl+1);
		}
	},
	emscriptenfte_alert : function(msg)
	{
		msg = Pointer_stringify(msg);
		console.log(msg);
		alert(msg);
	},

	$FTEC:
	{
		ctxwarned:0,
		linebuffer:'',
		w: -1,
		h: -1,
		donecb:0,
		evcb: {
			resize:0,
			mouse:0,
			key:0
		},

		handleevent : function(event)
		{
			switch(event.type)
			{
				case 'resize':
					if (FTEC.evcb.resize != 0)
						Runtime.dynCall('vii', FTEC.evcb.resize, [Module['canvas'].width, Module['canvas'].height]);
					break;
				case 'mousemove':
					if (FTEC.evcb.mouse != 0)
					{
						if (Browser.pointerLock)
						{
							if (typeof event.movementX === 'undefined')
							{
								event.movementX = event.mozMovementX;
								event.movementY = event.mozMovementY;
							}
							if (typeof event.movementX === 'undefined')
							{
								event.movementX = event.webkitMovementX;
								event.movementY = event.webkitMovementY;
							}
							Runtime.dynCall('viidddd', FTEC.evcb.mouse, [0, false, event.movementX, event.movementY, 0, 0]);
						}
						else
							Runtime.dynCall('viidddd', FTEC.evcb.mouse, [0, true, event.pageX, event.pageY, 0, 0]);
					}
					break;
				case 'mousedown':
					if (Browser.isFullScreen == 0)
					{
						Browser.requestFullScreen(true, true);
						Module['canvas'].requestPointerLock();
					}
				case 'mouseup':
					if (FTEC.evcb.button != 0)
					{
						Runtime.dynCall('viii', FTEC.evcb.button, [0, event.type=='mousedown', event.button]);
						event.preventDefault();
					}
					break;
				case 'mousewheel':
				case 'wheel':
					if (FTEC.evcb.button != 0)
					{
						Runtime.dynCall('viii', FTEC.evcb.button, [0, 2, event.deltaY]);
						event.preventDefault();
					}
					break;
				case 'mouseout':
					if (FTEC.evcb.button != 0)
					{
						for (var i = 0; i < 8; i++)	
							Runtime.dynCall('viii', FTEC.evcb.button, [0, false, i]);
					}
					break;
				case 'keypress':
					if (FTEC.evcb.key != 0)
					{
						Runtime.dynCall('viiii', FTEC.evcb.key, [0, 1, 0, event.charCode]);
						Runtime.dynCall('viiii', FTEC.evcb.key, [0, 0, 0, event.charCode]);
						event.preventDefault();
					}
					break;
				case 'keydown':
				case 'keyup':
					//122 is 'toggle fullscreen'.
					//we don't steal that because its impossible to leave it again once used.
					if (FTEC.evcb.key != 0 && event.keyCode != 122)
					{
						if (Runtime.dynCall('iiiii', FTEC.evcb.key, [0, event.type=='keydown', event.keyCode, 0]))
							event.preventDefault();
					}
					break;
				case 'touchstart':
				case 'touchend':
				case 'touchcancel':
				case 'touchleave':
				case 'touchmove':
					var touches = event.changedTouches;
					for (var i = 0; i < touches.length; i++)
					{
						var t = touches[i];
						if (FTEC.evcb.mouse)
							Runtime.dynCall('viidddd', FTEC.evcb.mouse, [t.identifier+1, true, t.pageX, t.pageY, 0, Math.sqrt(t.radiusX*t.radiusX+t.radiusY*t.radiusY)]);
						if (FTEC.evcb.button)
						{
							if (event.type == 'touchstart')
								Runtime.dynCall('viii', FTEC.evcb.button, [t.identifier+1, 1, 0]);
							else if (event.type != 'touchmove')
								Runtime.dynCall('viii', FTEC.evcb.button, [t.identifier+1, 0, 0]);
						}
					}
					event.preventDefault();
					break;
				default:
					console.log(event);
					break;
			}
		}
	},
	emscriptenfte_setupcanvas__deps: ['$FTEC', '$Browser'],
	emscriptenfte_setupcanvas : function(nw,nh,evresz,evm,evb,evk,evh)
	{
		FTEC.evcb.resize = evresz;
		FTEC.evcb.mouse = evm;
		FTEC.evcb.button = evb;
		FTEC.evcb.key = evk;
		FTEC.evcb.hashchange = evh;
		if (!FTEC.donecb)
		{
			FTEC.donecb = 1;
			['mousedown', 'mouseup', 'mousemove', 'wheel', 'mousewheel', 'mouseout', 'keypress', 'keydown', 'keyup', 'touchstart', 'touchend', 'touchcancel', 'touchleave', 'touchmove'].forEach(function(event)
			{
				Module['canvas'].addEventListener(event, FTEC.handleevent, true);
			});
			['keydown', 'keyup', 'keypress'].forEach(function(event)
			{
				document.addEventListener(event, FTEC.handleevent, true);
			});

			Browser.resizeListeners.push(function(w, h) {
				FTEC.handleevent({
					type: 'resize',
				});
			});
		}
		if (Module.print === undefined)
			Module.print = function(msg){console.log(msg);};
			var ctx = Browser.createContext(Module['canvas'], true, true);
		if (ctx == null)
		{
			var msg = "Unable to set up webgl context.\n\nPlease use a browser that supports it and has it enabled\nYour graphics drivers may also be blacklisted, so try updating those too. woo, might as well update your entire operating system while you're at it.\nIt'll be expensive, but hey, its YOUR money, not mine.\nYou can probably just disable the blacklist, but please don't moan at me when your computer blows up, seriously, make sure those drivers are not too buggy.\nI knew a guy once. True story. Boring, but true.\nYou're probably missing out on something right now. Don't you just hate it when that happens?\nMeh, its probably just tinkertoys, right?\n\nYou know, you could always try Internet Explorer, you never know, hell might have frozen over.\nDon't worry, I wasn't serious.\n\nTum te tum. Did you get it working yet?\nDude, fix it already.\n\nThis message was brought to you by Sleep Deprivation, sponsoring quake since I don't know when";
			if (FTEC.ctxwarned == 0)
			{
				FTEC.ctxwarned = 1;
				console.log(msg);
				alert(msg);
			}
			return 0;
		}
//		Browser.setCanvasSize(nw, nh, false);

		window.onresize = function()
		{
			//emscripten's browser library will revert sizes wrongly or something when we're fullscreen, so make sure that doesn't happen.
//			if (Browser.isFullScreen)
//			{
//				Browser.windowedWidth = window.innerWidth;
//				Browser.windowedHeight = window.innerHeight;
//			}
//			else
				Browser.setCanvasSize(window.innerWidth, window.innerHeight, false);
			if (FTEC.evcb.resize != 0)
				Runtime.dynCall('vii', FTEC.evcb.resize, [Module['canvas'].width, Module['canvas'].height]);
		};
		window.onresize();

		if (FTEC.evcb.hashchange)
		window.onhashchange = function()
		{
			if (FTEC.evcb.hashchange != 0)
			{
				var val = location.hash;
				var ptr = _malloc(val.length);
				writeStringToMemory(val, ptr);
				Runtime.dynCall('vi', FTEC.evcb.hashchange, [ptr]);
				_free(ptr);
			}
		};

		return 1;
	},

	emscriptenfte_abortmainloop : function(msg)
	{
		msg = Pointer_stringify(msg);
		throw 'oh noes! something bad happened in ' + msg + '!';
	},

	emscriptenfte_ticks_ms : function()
	{
		return Date.now();
	},

	emscriptenfte_handle_alloc__deps : ['$FTEH'],
	emscriptenfte_handle_alloc : function(h)
	{
		for (var i = 0; FTEH.h.length; i+=1)
		{
			if (FTEH.h[i] == null)
			{
				FTEH.h[i] = h;
				return i;
			}
		}
		i = FTEH.h.length;
		FTEH.h[i] = h;
		return i;
	},

	//temp files
	emscriptenfte_buf_create__deps : ['emscriptenfte_handle_alloc'],
	emscriptenfte_buf_create : function()
	{
		var b = {h:-1, r:1, l:0,m:4096,d:new Uint8Array(4096), n:null};
		b.h = _emscriptenfte_handle_alloc(b);
		return b.h;
	},
	//filesystem emulation
	emscriptenfte_buf_open__deps : ['emscriptenfte_buf_create'],
	emscriptenfte_buf_open : function(name, createifneeded)
	{
		name = Pointer_stringify(name);
		var f = FTEH.f[name];
		var r = -1;
		if (f == null)
		{
			if (window.localStorage && createifneeded != 2)
			{
				var str = window.localStorage.getItem(name);
				if (str != null)
				{
//					console.log('read file '+name+': ' + str);

					var len = str.length;
					var buf = new Uint8Array(len);
					for (var i = 0; i < len; i++)
						buf[i] = str.charCodeAt(i);

					var b = {h:-1, r:2, l:len,m:len,d:buf, n:name};
					r = b.h = _emscriptenfte_handle_alloc(b);
					FTEH.f[name] = b;
					return b.h;
				}
			}

			if (createifneeded)
				r = _emscriptenfte_buf_create();
			if (r != -1)
			{
				f = FTEH.h[r];
				f.r+=1;
				f.n = name;
				FTEH.f[name] = f;
				if (FTEH.f[name] != f || f.n != name)
					console.log('error creating file '+name);
			}
		}
		else
		{
			f.r+=1;
			r = f.h;
		}
		if (f != null && createifneeded == 2)
			f.l = 0;  //truncate it.
		return r;
	},
	emscriptenfte_buf_rename : function(oldname, newname)
	{
		oldname = Pointer_stringify(oldname);
		newname = Pointer_stringify(newname);
		var f = FTEH.f[oldname];
		if (f == null)
			return 0;
		if (FTEH.f[newname] != null)
			return 0;
		FTEH.f[newname] = f;
		delete FTEH.f[oldname];
		f.n = newname;
		return 1;
	},
	emscriptenfte_buf_delete : function(name)
	{
		name = Pointer_stringify(name);
		var f = FTEH.f[name];
		if (f)
		{
			delete FTEH.f[name];
			f.n = null;
			emscriptenfte_buf_release(f.h);
			return 1;
		}
		return 0;
	},
	emscriptenfte_buf_pushtolocalstore : function(handle)
	{
		var b = FTEH.h[handle];
		if (b == null)
		{
			Module.printError('emscriptenfte_buf_pushtolocalstore with invalid handle');
			return;
		}
		if (b.n == null)
			return;
		var data = b.d;
		var len = b.l;
		if (window.localStorage)
		{
			var foo = "";
			//use a divide and conquer implementation instead for speed?
			for (var i = 0; i < len; i++)
				foo += String.fromCharCode(data[i]);
			window.localStorage.setItem(b.n, foo);
		}
		else
			console.log('local storage not supported');
	},
	emscriptenfte_buf_release : function(handle)
	{
		var b = FTEH.h[handle];
		if (b == null)
		{
			Module.printError('emscriptenfte_buf_release with invalid handle');
			return;
		}
		b.r -= 1;
		if (b.r == 0)
		{
			if (b.n != null)
				delete FTEH.f[b.n];
			delete FTEH.h[handle];
			b.d = null;
		}
	},
	emscriptenfte_buf_getsize : function(handle)
	{
		var b = FTEH.h[handle];
		return b.l;
	},
	emscriptenfte_buf_read : function(handle, offset, data, len)
	{
		var b = FTEH.h[handle];
		if (offset+len > b.l)	//clamp the read
			len = b.l - offset;
		if (len < 0)
		{
			len = 0;
			if (offset+len >= b.l)
				return -1;
		}
		HEAPU8.set(b.d.subarray(offset, offset+len), data);
		return len;
	},
	emscriptenfte_buf_write : function(handle, offset, data, len)
	{
		var b = FTEH.h[handle];
		if (len < 0)
			len = 0;
		if (offset+len > b.m)
		{	//extend it if needed.
			b.m = offset + len + 4095;
			b.m = b.m & ~4095;
			var nd = new Uint8Array(b.m);
			nd.set(b.d, 0);
			b.d = nd;
		}
		b.d.set(HEAPU8.subarray(data, data+len), offset);
		if (offset + len > b.l)
			b.l = offset + len;
		return len;
	},

	emscriptenfte_ws_connect__deps: ['emscriptenfte_handle_alloc'],
	emscriptenfte_ws_connect : function(url)
	{
		var _url = Pointer_stringify(url);
		var s = {ws:null, inq:[], err:0};
		s.ws = new WebSocket(_url, 'binary');
		if (!s.ws)
			return -1;
		s.ws.onerror = function(event) {s.err = 1;};
		s.ws.onclose = function(event) {s.err = 1;};
	//	s.ws.onopen = function(event) {};
		s.ws.onmessage = function(event)
			{
		    assert(typeof event.data !== 'string' && event.data.byteLength);
				s.inq.push(new Uint8Array(event.data));
			};

		return _emscriptenfte_handle_alloc(s);
	},
	emscriptenfte_ws_close : function(sockid)
	{
		var s = FTEH.h[sockid];
		if (!s)
			return -1;
		s.ws.close();
		s.ws = null;	//make sure to avoid circular references
		delete FTEH.h[sockid];	//socked is no longer accessible.
		return 0;
	},
	//separate call allows for more sane flood control when fragmentation is involved.
	emscriptenfte_ws_cansend : function(sockid, extra, maxpending)
	{
		var s = FTEH.h[sockid];
		if (!s)
			return 1;	//go on punk, make my day.
		return ((s.ws.bufferedAmount+extra) < maxpending);
	},
	emscriptenfte_ws_send : function(sockid, data, len)
	{
		var s = FTEH.h[sockid];
		if (!s)
			return -1;
		s.s.send(HEAPU8.subarray(data, data+len).buffer);
		return len;
	},
	emscriptenfte_ws_recv : function(sockid, data, len)
	{
		var s = FTEH.h[sockid];
		if (!s)
			return -1;
		var inp = s.inq.shift();
		if (inp)
		{
			if (inp.length > len)
				inp.length = len;
			HEAPU8.set(inp, data);
			return inp.length;
		}
		if (s.err)
			return 0;
		return -1;
	},



	emscriptenfte_async_wget_data2 : function(url, ctx, onload, onerror, onprogress)
	{
		var _url = Pointer_stringify(url);
		console.log("Attempting download of " + _url);
		var http = new XMLHttpRequest();
		http.open('GET', _url, true);
		http.responseType = 'arraybuffer';

		http.onload = function(e)
		{
//		console.log("onload: " + _url + " status " + http.status);
			if (http.status == 200)
			{
				var bar = new Uint8Array(http.response);
				var buf = _malloc(bar.length);
				HEAPU8.set(bar, buf);
				if (onload)
					Runtime.dynCall('viii', onload, [ctx, buf, bar.length]);
			}
			else
			{
				if (onerror)
					Runtime.dynCall('vii', onerror, [ctx, http.status]);
			}
		};

		http.onerror = function(e)
		{
//		console.log("onerror: " + _url + " status " + http.status);
			if (onerror)
				Runtime.dynCall('vii', onerror, [ctx, http.status]);
		};

		http.onprogress = function(e)
		{
			if (onprogress)
				Runtime.dynCall('viii', onprogress, [ctx, e.loaded, e.total]);
		};

		http.send(null);
	}
});