isleward/src/client/js/rendering/renderer.js

define([
	'js/resources',
	'js/system/events',
	'js/misc/physics',
	'js/rendering/effects',
	'js/rendering/tileOpacity',
	'js/rendering/particles',
	'js/rendering/shaders/outline',
	'js/rendering/spritePool'
], function(
	resources,
	events,
	physics,
	effects,
	tileOpacity,
	particles,
	shaderOutline,
	spritePool
) {
	var scale = 40;
	var scaleMult = 5;
	var pixi = PIXI;

	return {
		stage: null,
		layers: {
			objects: null,
			mobs: null,
			characters: null,
			attacks: null,
			effects: null,
			particles: null,
			tileSprites: null,
			hiders: null
		},

		titleScreen: false,

		width: 0,
		height: 0,

		showTilesW: 0,
		showTilesH: 0,

		pos: {
			x: 0,
			y: 0
		},
		moveTo: null,
		moveSpeed: 0,
		moveSpeedMax: 1.50,
		moveSpeedInc: 0.5,

		zoneId: null,

		textures: {},
		textureCache: {},

		sprites: [],

		lastTick: null,

		hiddenRooms: null,

		init: function() {
			PIXI.GC_MODES.DEFAULT = PIXI.GC_MODES.AUTO;
			PIXI.SCALE_MODES.DEFAULT = PIXI.SCALE_MODES.NEAREST;

			events.on('onGetMap', this.onGetMap.bind(this));
			events.on('onDeath', this.onDeath.bind(this));
			events.on('onToggleFullscreen', this.toggleScreen.bind(this));

			this.width = $('body').width();
			this.height = $('body').height();

			this.showTilesW = Math.ceil((this.width / scale) / 2) + 3;
			this.showTilesH = Math.ceil((this.height / scale) / 2) + 3;

			this.renderer = pixi.autoDetectRenderer(this.width, this.height, {
				backgroundColor: 0x2d2136
			});

			window.onresize = this.onResize.bind(this);

			$(this.renderer.view)
				.appendTo('.canvasContainer');

			this.stage = new pixi.Container();

			var layers = this.layers;
			Object.keys(layers).forEach(function(l) {
				if (l == 'tileSprites') {
					layers[l] = new pixi.Container();
					layers[l].layer = 'tiles';
				} else
					layers[l] = new pixi.Container();

				this.stage.addChild(layers[l])
			}, this);

			var spriteNames = ['sprites', 'tiles', 'mobs', 'bosses', 'bigObjects', 'objects', 'characters', 'attacks', 'auras', 'walls', 'ui', 'animChar', 'animMob', 'animBoss'];
			resources.spriteNames.forEach(function(s) {
				if (s.indexOf('.png') > -1)
					spriteNames.push(s);
			});

			spriteNames.forEach(function(t) {
				this.textures[t] = new pixi.BaseTexture(resources.sprites[t].image);
				this.textures[t].scaleMode = pixi.SCALE_MODES.NEAREST;
			}, this);

			particles.init({
				renderer: this.renderer,
				stage: this.layers.particles
			});
		},

		toggleScreen: function() {
			var screenMode = 0;

			var isFullscreen = (window.innerHeight == screen.height);
			if (isFullscreen)
				screenMode = 0;
			else
				screenMode = 1;

			if (screenMode == 0) {
				(document.cancelFullscreen || document.msCancelFullscreen || document.mozCancelFullscreen || document.webkitCancelFullScreen).call(document);
				return 'Windowed';
			} else if (screenMode == 1) {
				var el = $('body')[0];
				(el.requestFullscreen || el.msRequestFullscreen || el.mozRequestFullscreen || el.webkitRequestFullscreen).call(el);
				return 'Fullscreen';
			}
		},

		buildTitleScreen: function() {
			this.titleScreen = true;

			this.setPosition({
				x: 0,
				y: 0
			}, true);

			var w = Math.ceil(this.width / scale) + 1;
			var h = Math.ceil(this.height / scale) + 1;

			var container = this.layers.tileSprites;

			for (var i = 0; i < w; i++) {
				for (var j = 0; j < h; j++) {
					var tile = 5;
					if (Math.random() < 0.4)
						tile = 6;
					var tile = new pixi.Sprite(this.getTexture('sprites', tile));

					var alpha = Math.sin((i % 4) + Math.cos(j % 8));
					if (tile == 5)
						alpha /= 2;

					tile.alpha = alpha;
					tile.position.x = i * scale;
					tile.position.y = j * scale;
					tile.width = scale;
					tile.height = scale;

					if (Math.random() < 0.5) {
						tile.position.x += scale;
						tile.scale.x = -scaleMult;
					}

					container.addChild(tile);
				}
			}
		},

		onDeath: function(pos) {
			this.setPosition({
				x: (pos.x - (this.width / (scale * 2))) * scale,
				y: (pos.y - (this.height / (scale * 2))) * scale
			}, true);
		},

		onResize: function() {
			var zoom = window.devicePixelRatio;

			this.width = $('body').width() * zoom;
			this.height = $('body').height() * zoom;

			this.showTilesW = Math.ceil((this.width / scale) / 2) + 3;
			this.showTilesH = Math.ceil((this.height / scale) / 2) + 3;

			this.renderer.resize(this.width, this.height);
			if (window.player) {
				this.setPosition({
					x: (window.player.x - (this.width / (scale * 2))) * scale,
					y: (window.player.y - (this.height / (scale * 2))) * scale
				}, true);
			}

			if (this.titleScreen) {
				this.clean();
				this.buildTitleScreen();
			}

			events.emit('onResize');
		},

		getTexture: function(baseTex, cell, size) {
			size = size || 8;
			var name = baseTex + '_' + cell;

			var textureCache = this.textureCache;

			var cached = textureCache[name];

			if (!cached) {
				var y = ~~(cell / 8);
				var x = cell - (y * 8);
				cached = new pixi.Texture(this.textures[baseTex], new pixi.Rectangle(x * size, y * size, size, size));
				textureCache[name] = cached;
			}

			return cached;
		},

		clean: function() {
			var container = this.layers.tileSprites;
			this.stage.removeChild(container);

			this.layers.tileSprites = container = new pixi.Container();
			container.layer = 'tiles';
			this.stage.addChild(container);

			this.stage.children.sort(function(a, b) {
				if (a.layer == 'tiles')
					return -1;
				else if (b.layer == 'tiles')
					return 1;
				else
					return 0;
			}, this);
		},

		onGetMapCustomization: function(msg) {
			if (!msg.collide) {
				var children = this.layers.tiles.children;
				var cLen = children.length;
				var x = msg.x * scale;
				var y = msg.y * scale;
				for (var i = cLen - 1; i >= 0; i--) {
					var c = children[i];
					var cx = c.x;
					if (c.scale.x < 0)
						cx -= scale;
					if ((cx == x) && (c.y == y)) {
						c.parent.removeChild(c);
						break;
					}
				}
			}

			var tile = new pixi.Sprite(this.getTexture('sprites', msg.tile))

			tile.alpha = tileOpacity.map(msg.tile);
			tile.position.x = msg.x * scale;
			tile.position.y = msg.y * scale;
			tile.width = scale;
			tile.height = scale;

			if (Math.random() < 0.5) {
				tile.position.x += scale;
				tile.scale.x = -scaleMult;
			}

			this.layers.tiles.addChild(tile);

			physics.collisionMap[msg.x][msg.y] = msg.collide;
			physics.graph.grid[msg.x][msg.y] = !msg.collide;
		},

		buildTile: function(c, i, j) {
			var alpha = tileOpacity.map(c);
			var canFlip = tileOpacity.canFlip(c);

			var tile = new pixi.Sprite(this.getTexture('sprites', c));

			tile.alpha = alpha;
			tile.position.x = i * scale;
			tile.position.y = j * scale;
			tile.width = scale;
			tile.height = scale;

			if (canFlip) {
				if (Math.random() < 0.5) {
					tile.position.x += scale;
					tile.scale.x = -scaleMult;
				}
			}

			return tile;
		},

		onGetMap: function(msg) {
			this.titleScreen = false;
			physics.init(msg.collisionMap);

			var map = this.map = msg.map;
			var w = this.w = map.length;
			var h = this.h = map[0].length;

			this.clean();
			spritePool.clean();

			this.buildHiddenRooms(msg);

			this.sprites = _.get2dArray(w, h, 'array');

			this.stage.children.sort(function(a, b) {
				if (a.layer == 'tiles')
					return -1;
				else if (b.layer == 'tiles')
					return 1;
				else
					return 0;
			}, this);

			if (this.zoneId != null)
				events.emit('onRezone', this.zoneId);
			this.zoneId = msg.zoneId;

			msg.clientObjects.forEach(function(c) {
				c.zoneId = this.zoneId;
				events.emit('onGetObject', c);
			}, this);
		},

		buildHiddenRooms: function(msg) {
			var hiddenWalls = msg.hiddenWalls;
			var hiddenTiles = msg.hiddenTiles;

			this.hiddenRooms = msg.hiddenRooms;
			this.hiddenRooms.forEach(function(h) {
				h.container = new pixi.Container();
				this.layers.hiders.addChild(h.container);
				this.buildRectangle({
					x: h.x * scale,
					y: h.y * scale,
					w: h.width * scale,
					h: h.height * scale,
					color: 0x2d2136,
					parent: h.container
				});
				for (var i = h.x; i < h.x + h.width; i++) {
					for (var j = h.y; j < h.y + h.height; j++) {
						[hiddenTiles, hiddenWalls].forEach(function(k) {
							var cell = k[i][j];
							if (cell == 0)
								return;

							var tile = this.buildTile(cell - 1, i, j);
							tile.width = scale;
							tile.height = scale;
							h.container.addChild(tile);
						}, this);
					}
				}
			}, this);
		},
		hideHiders: function() {
			var player = window.player;
			if (!player)
				return;

			var x = player.x;
			var y = player.y;

			var hiddenRooms = this.hiddenRooms;
			var hLen = hiddenRooms.length;
			for (var i = 0; i < hLen; i++) {
				var h = hiddenRooms[i];
				h.container.visible = (
					(x < h.x) ||
					(x >= h.x + h.width) ||
					(y < h.y) ||
					(y >= h.y + h.height)
				);
			}
		},

		setPosition: function(pos, instant) {
			pos.x += 16;
			pos.y += 16;

			this.hideHiders();

			if (instant) {
				this.moveTo = null;
				this.pos = pos;
				this.stage.x = -~~this.pos.x;
				this.stage.y = -~~this.pos.y;
			} else
				this.moveTo = pos;

			this.updateSprites();
		},

		updateSprites: function() {
			var player = window.player;
			if (!player)
				return;

			var w = this.w;
			var h = this.h;
			var x = player.x;
			var y = player.y;
			var sprites = this.sprites;
			var map = this.map;
			var container = this.layers.tileSprites;

			var sw = this.showTilesW;
			var sh = this.showTilesH;

			var lowX = Math.max(0, x - sw);
			var lowY = Math.max(0, y - sh);
			var highX = Math.min(w - 1, x + sw);
			var highY = Math.min(h - 1, y + sh);

			var addedSprite = false;

			for (var i = lowX; i < highX; i++) {
				for (var j = lowY; j < highY; j++) {
					cell = map[i][j];
					if (!cell)
						continue;

					var rendered = sprites[i][j];
					if (rendered.length > 0)
						continue;
					else if (!cell.split)
						cell += '';
					cell = cell.split(',');
					for (var k = 0; k < cell.length; k++) {
						var c = cell[k];
						if (c == 0)
							continue;

						c--;

						var flipped = '';
						if (tileOpacity.canFlip(c)) {
							if (Math.random() < 0.5)
								flipped = 'flip';
						}

						var tile = spritePool.getSprite(flipped + c);
						if (!tile) {
							tile = this.buildTile(c, i, j);
							container.addChild(tile);
							tile.type = c;
							tile.sheetNum = tileOpacity.getSheetNum(c);
							addedSprite = true;
						} else {
							tile.position.x = i * scale;
							tile.position.y = j * scale;
							if (flipped != '')
								tile.position.x += scale;
							tile.visible = true;
						}

						rendered.push(tile);
					}
				}
			}

			lowX = Math.max(0, lowX - 10);
			lowY = Math.max(0, lowY - 10);
			highX = Math.min(w - 1, highX + 10);
			highY = Math.min(h - 1, highY + 10);

			for (var i = lowX; i < highX; i++) {
				var outside = ((i >= x - sw) && (i < x + sw));
				for (var j = lowY; j < highY; j++) {
					if ((outside) && (j >= y - sh) && (j < y + sh))
						continue;

					var list = sprites[i][j];
					var lLen = list.length;
					for (var k = 0; k < lLen; k++) {
						var sprite = list[k];
						sprite.visible = false;
						spritePool.store(sprite);
					}
					sprites[i][j] = [];
				}
			}

			//Reorder
			if (addedSprite) {
				container.children.sort(function(a, b) {
					return (a.sheetNum - b.sheetNum);
				});
			}
		},

		update: function() {
			var time = +new Date;

			if (this.moveTo) {
				var deltaX = this.moveTo.x - this.pos.x;
				var deltaY = this.moveTo.y - this.pos.y;

				if ((deltaX != 0) || (deltaY != 0)) {
					var moveSpeed = this.moveSpeed;
					var distance = Math.max(Math.abs(deltaX), Math.abs(deltaY));

					var moveSpeedMax = this.moveSpeedMax;
					if (distance > 100)
						moveSpeedMax *= 1.75;
					if (this.moveSpeed < moveSpeedMax)
						this.moveSpeed += this.moveSpeedInc;

					var elapsed = time - this.lastTick;
					moveSpeed *= (elapsed / 16.67);

					if (moveSpeed > distance)
						moveSpeed = distance;

					deltaX = (deltaX / distance) * moveSpeed;
					deltaY = (deltaY / distance) * moveSpeed;

					this.pos.x = this.pos.x + (deltaX);
					this.pos.y = this.pos.y + (deltaY);
				} else {
					this.moveSpeed = 0;
					this.moveTo = null;
				}

				this.stage.x = -~~this.pos.x;
				this.stage.y = -~~this.pos.y;

				events.emit('onSceneMove');
			}

			this.lastTick = time;
		},

		buildContainer: function(obj) {
			var container = new pixi.Container;
			this.layers[obj.layerName || obj.sheetName].addChild(container);

			return container;
		},

		buildRectangle: function(obj) {
			var graphics = new pixi.Graphics;

			var alpha = obj.alpha;
			if (alpha != null)
				graphics.alpha = alpha;

			var fillAlpha = obj.fillAlpha;
			if (fillAlpha == null)
				fillAlpha = 1;

			graphics.beginFill(obj.color || '0x48edff', fillAlpha);

			if (obj.strokeColor)
				graphics.lineStyle(scaleMult, obj.strokeColor);

			graphics.moveTo(obj.x, obj.y);
			graphics.lineTo(obj.x + obj.w, obj.y);
			graphics.lineTo(obj.x + obj.w, obj.y + obj.h);
			graphics.lineTo(obj.x, obj.y + obj.h);
			graphics.lineTo(obj.x, obj.y);

			graphics.endFill();

			(obj.parent || this.layers[obj.layerName || obj.sheetName]).addChild(graphics);

			return graphics;
		},

		moveRectangle(obj) {
			var points = obj.sprite.graphicsData[0].shape.points;
			if (!points)
				return;

			obj.sprite.dirty = true;
			obj.sprite.clearDirty = true;

			points[0] = obj.x;
			points[1] = obj.y;
			points[2] = obj.x + obj.w;
			points[3] = obj.y;
			points[4] = obj.x + obj.w;
			points[5] = obj.y + obj.h;
			points[6] = obj.x;
			points[7] = obj.y + obj.h;
			points[8] = obj.x;
			points[9] = obj.y;
		},

		buildObject: function(obj) {
			var w = 8;
			var h = 8;
			if (obj.w) {
				w = obj.w / scaleMult;
				h = obj.h / scaleMult;
			}

			if (obj.sheetName == 'bosses') {
				obj.layerName = 'mobs';
				w = 24;
				h = 24;
				obj.w = w * scaleMult;
				obj.h = h * scaleMult;
			} else if (obj.sheetName == 'bigObjects') {
				obj.layerName = 'mobs';
				w = 24;
				h = 24;
				obj.w = w * scaleMult;
				obj.h = h * scaleMult;
			}

			var sprite = new pixi.Sprite(this.getTexture(obj.sheetName, obj.cell, w))
			sprite.x = obj.x * scale;
			sprite.y = obj.y * scale;
			sprite.width = obj.w || scale;
			sprite.height = obj.h || scale;

			if (obj.sheetName == 'bosses') {
				sprite.x -= scale;
				sprite.y -= (scale * 2);
			} else if (obj.sheetName == 'bigObjects') {
				sprite.x -= scale;
				sprite.y -= (scale * 2);
				sprite.alpha = 0.80;
			}

			if (obj.flipX) {
				sprite.scale.x *= -1;
				if ((obj.sheetName == 'bosses') || (obj.sheetName == 'bigObjects'))
					sprite.x += (scale * 2);
				else
					sprite.x += scale;
			}
			(this.layers[obj.layerName || obj.sheetName] || this.layers.objects).addChild(sprite);

			return sprite;
		},

		addFilter: function(sprite) {
			var thickness = 16;
			if (sprite.width > scale)
				thickness = 8;

			var filter = new shaderOutline(this.renderer.width, this.renderer.height, thickness, '0xffffff');

			if (!sprite.filters)
				sprite.filters = [filter];
			else
				sprite.filters.push();

			return filter;
		},

		removeFilter: function(sprite, filter) {
			if (!sprite.filters)
				return;

			sprite.filters = null;
		},

		buildText: function(obj) {
			var textSprite = new pixi.Text(obj.text, {
				fontFamily: 'bitty',
				fontSize: (obj.fontSize || 14),
				fill: obj.color || 0xF2F5F5,
				stroke: 0x2d2136,
				strokeThickness: 4,
				align: 'center'
			});

			textSprite.x = obj.x - (textSprite.width / 2);
			textSprite.y = obj.y;

			var parent = obj.parent || this.layers[obj.layerName]
			parent.addChild(textSprite);

			return textSprite;
		},

		buildEmitter: function(config) {
			return particles.buildEmitter(config);
		},

		destroyEmitter: function(emitter) {
			particles.destroyEmitter(emitter);
		},

		setSprite: function(obj) {
			var cell = obj.cell;
			var y = ~~(cell / 8);
			var x = cell - (y * 8);

			var baseTex = this.textures[obj.sheetName];
			obj.sprite.texture = this.getTexture(obj.sheetName, obj.cell, obj.sprite.width / scaleMult);
		},

		reorder: function(sprite) {
			var mobLayer = this.layers.mobs;
			var mobs = mobLayer.children;
			mobs.sort(function(a, b) {
				return (b.y - a.y);
			});
		},

		destroyObject: function(obj) {
			if (!obj.sprite.parent)
				return;
			obj.sprite.parent.removeChild(obj.sprite);
		},

		render: function() {
			if (!this.stage)
				return;

			effects.render();
			particles.update();

			this.renderer.render(this.stage);
		}
	};
});