diff --git a/src/game/index.ts b/src/game/index.ts
index 0207634..1c2b222 100644
--- a/src/game/index.ts
+++ b/src/game/index.ts
@@ -61,14 +61,6 @@ async function loop(fn) {
 		then = Date.now();
 
 		await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
-		// await new Promise(resolve => requestAnimationFrame(resolve));
 	}
 };
 
diff --git a/src/graphics/index.ts b/src/graphics/index.ts
index 9dd66c6..c94278e 100644
--- a/src/graphics/index.ts
+++ b/src/graphics/index.ts
@@ -1,14 +1,17 @@
 import * as gui from './gui';
 import * as draw from './draw';
 import * as input from '../input';
-import {render as renderWorld} from './world';
-import {render as renderBackground} from './background';
+import { render as renderWorld } from './world';
+import { render as renderBackground } from './background';
 import * as world from '../world/index';
 import * as consts from '../consts';
 
 const TAU = consts.TAU;
 
-export let canvas, context, tempCanvas, tempContext;
+export let canvas: HTMLCanvasElement;
+export let tempCanvas: HTMLCanvasElement;
+export let context: CanvasRenderingContext2D;
+export let tempContext: CanvasRenderingContext2D;
 export let perspective: Perspective;
 export let trace = true;
 export let markers = true;
@@ -19,11 +22,17 @@ export function init() {
 	tempCanvas = document.querySelector('#temp');
 	tempContext = tempCanvas.getContext('2d');
 
-	canvas.width = window.innerWidth;
-	canvas.height = window.innerHeight;
+	function resizeCanvas() {
+		canvas.width = window.innerWidth;
+		canvas.height = window.innerHeight;
 
-	canvas.style.width = canvas.width + 'px';
-	canvas.style.height = canvas.height + 'px';
+		canvas.style.width = window.innerWidth + 'px';
+		canvas.style.height = window.innerHeight + 'px';
+	}
+
+	resizeCanvas();
+
+	window.addEventListener('resize', resizeCanvas);
 
 	perspective = new Perspective();
 
@@ -147,7 +156,7 @@ class Perspective {
 	get currentShift() {
 		let [ox, oy] = this.oldShift;
 		return [this.interpolate(this.shiftX, ox),
-			this.interpolate(this.shiftY, oy)];
+		this.interpolate(this.shiftY, oy)];
 	}
 
 	get currentRotation() {
@@ -172,6 +181,8 @@ class Perspective {
 	}
 
 	tick(delta: number) {
+		this.bounds = [0, 0, canvas.width, canvas.height];
+
 		if (this.focus !== null)
 			[this.x, this.y] = this.focus.com;
 
@@ -219,7 +230,7 @@ class Perspective {
 	}
 
 	transformRotate() {
-		let [,,bw, bh] = this.bounds;
+		let [, , bw, bh] = this.bounds;
 		context.translate(bw / 2, bh / 2);
 		context.rotate(-this.rotation);
 		context.translate(-bw / 2, -bh / 2);
@@ -227,11 +238,11 @@ class Perspective {
 
 	rotateVector(x, y, r = this.rotation) {
 		return [(x * Math.cos(r) - y * Math.sin(r)),
-			(y * Math.cos(r) - x * Math.sin(r))];
+		(y * Math.cos(r) - x * Math.sin(r))];
 	}
 
 	transformCanvas() {
-		let [,,bw, bh] = this.bounds;
+		let [, , bw, bh] = this.bounds;
 		let [sx, sy] = this.rotateVector(...this.currentShift, this.rotation);
 		let tx = -(this.x + sx) * this.zoom;
 		let ty = -(this.y + sy) * this.zoom;
diff --git a/src/gui/element.ts b/src/gui/element.ts
index 4ed4301..8f5b110 100644
--- a/src/gui/element.ts
+++ b/src/gui/element.ts
@@ -1,4 +1,4 @@
-import {Rect} from './misc';
+import { Rect } from './misc';
 
 const defaultOptions = {
 	draw: true, // Whether the element itself will be rendered.
@@ -6,14 +6,17 @@ const defaultOptions = {
 }
 
 export default class GuiElement extends Rect {
-	constructor(x, y, w, h, options = {}) {
-		super(x, y, w, h);
+	children: Set<GuiElement>;
+	parent: GuiElement;
+
+	constructor(x, y, width, height, options = {}) {
+		super(x, y, width, height);
 		this.children = new Set();
 		this.parent = null;
 
 		this.type = 'element';
 
-		this.options = Object.assign({}, defaultOptions, options);
+		this.options = { ...defaultOptions, ...options };
 	}
 
 	tickElement() {
@@ -45,14 +48,14 @@ export default class GuiElement extends Rect {
 	// Code should be self-describing, comments are for fucking about.
 	//   - Albert Einstein
 
-	posRelative({x = null, xc = 0, y = null, yc = 0, w = null, h = null}) {
+	posRelative({ x = null, xc = 0, y = null, yc = 0, w = null, h = null }) {
 		if (x !== null)
-			this.x = (this.parent.w * x) - (this.w * xc) + this.parent.x;
+			this.sourceX = () => (this.parent.w * x) - (this.w * xc) + this.parent.x;
 		if (y !== null)
-			this.y = (this.parent.h * y) - (this.h * yc) + this.parent.y;
+			this.sourceY = () => (this.parent.h * y) - (this.h * yc) + this.parent.y;
 		if (w !== null)
-			this.w = this.parent.w * w;
+			this.sourceWidth = () => this.parent.w * w;
 		if (h !== null)
-			this.h = this.parent.h * h;
+			this.sourceHeight = () => this.parent.h * h;
 	}
 }
diff --git a/src/gui/frame.ts b/src/gui/frame.ts
index 1a86f29..7feac67 100644
--- a/src/gui/frame.ts
+++ b/src/gui/frame.ts
@@ -2,8 +2,8 @@ import * as gui from './index';
 import GuiElement from './element';
 
 export default class GuiFrame extends GuiElement {
-	constructor(x, y, w, h, options) {
-		super(x, y, w, h, options);
+	constructor(x, y, width, height, options) {
+		super(x, y, width, height, options);
 		this.type = 'frame';
 	}
 }
diff --git a/src/gui/index.ts b/src/gui/index.ts
index 21beec8..85c41a9 100644
--- a/src/gui/index.ts
+++ b/src/gui/index.ts
@@ -1,8 +1,9 @@
 import {context} from '../graphics/index';
+import GuiElement from './element';
 import * as modules from './modules';
 
 export const elements = new Set();
-export let root;
+export let root: GuiElement;
 
 export function init() {
 	elements.clear();
diff --git a/src/gui/misc.ts b/src/gui/misc.ts
index fe62040..88af7b2 100644
--- a/src/gui/misc.ts
+++ b/src/gui/misc.ts
@@ -1,11 +1,16 @@
 import * as input from '../input';
 
 export class Rect {
-	constructor(x = 0, y = 0, w = 0, h = 0) {
+	sourceWidth: number | (() => number);
+	sourceHeight: number | (() => number);
+	sourceX: number | (() => number);
+	sourceY: number | (() => number);
+
+	constructor(x = 0, y = 0, width = 0, height = 0) {
 		this.x = x;
 		this.y = y;
-		this.w = w;
-		this.h = h;
+		this.sourceWidth = width;
+		this.sourceHeight = height;
 
 		this.onclick = null;
 		this.mouseHeld = false;
@@ -55,6 +60,54 @@ export class Rect {
 		return this.mouseOver() && input.mouse.pressed[0];
 	}
 
+	get w() {
+		if (typeof this.sourceWidth == 'function') {
+			return this.sourceWidth();
+		} else {
+			return this.sourceWidth;
+		}
+	}
+
+	get h() {
+		if (typeof this.sourceHeight == 'function') {
+			return this.sourceHeight();
+		} else {
+			return this.sourceHeight;
+		}
+	}
+	
+	set w(w) {
+		this.sourceWidth = w;
+	}
+
+	set h(h) {
+		this.sourceHeight = h;
+	}
+
+	get x() {
+		if (typeof this.sourceX == 'function') {
+			return this.sourceX();
+		} else {
+			return this.sourceX;
+		}
+	}
+
+	get y() {
+		if (typeof this.sourceY == 'function') {
+			return this.sourceY();
+		} else {
+			return this.sourceY;
+		}
+	}
+	
+	set x(x) {
+		this.sourceX = x;
+	}
+
+	set y(y) {
+		this.sourceY = y;
+	}
+
 	containsPoint(x, y) {
 		return x > this.x && x < this.x + this.w
 			&& y > this.y && y < this.y + this.h;
diff --git a/src/gui/modules.ts b/src/gui/modules.ts
index e45f025..03bfe4e 100644
--- a/src/gui/modules.ts
+++ b/src/gui/modules.ts
@@ -14,8 +14,9 @@ import {state} from '../game/index';
 import * as world from '../world/index';
 
 export function root() {
-	return new GuiFrame(0, 0, canvas.width, canvas.height, {
-		draw: false
+	return new GuiFrame(0, 0, () => canvas.width, () => canvas.height, {
+		draw: false,
+		name: 'root',
 	});
 }