From d18942196b9dd65b4cba8d7329b24532adf9fb2a Mon Sep 17 00:00:00 2001
From: paulaboks <paulaboks@protonmail.com>
Date: Thu, 12 Mar 2026 17:09:25 -0300
Subject: [PATCH] 3D game

---
 client/components/camera.ts           |  39 ++-
 client/components/dimension.ts        |   1 +
 client/components/player_controls.ts  |   6 +-
 client/game.ts                        |   2 +-
 client/generation.ts                  |  12 +-
 client/input_manager.ts               | 106 ++++++-
 client/player.ts                      |  26 +-
 client/renderer/core.ts               | 426 ++++++++------------------
 client/renderer/math.ts               |  84 -----
 client/renderer/mod.ts                |   1 +
 client/renderer/models.ts             |  76 +++++
 client/systems/dimension_logic.ts     |   4 +-
 client/systems/player_controls.ts     |  88 ++++--
 client/systems/render_system.ts       |  78 ++---
 client/systems/rendering/dimension.ts |  30 +-
 client/systems/rendering/sprites.ts   |   7 +-
 common/components/position.ts         |   4 +-
 common/components/velocity.ts         |   4 +-
 common/systems/movement_system.ts     |   3 +-
 deno.json                             |   1 +
 deno.lock                             |   5 +
 21 files changed, 422 insertions(+), 581 deletions(-)
 delete mode 100644 client/renderer/math.ts
 create mode 100644 client/renderer/models.ts

diff --git a/client/components/camera.ts b/client/components/camera.ts
index 5c967c3..77d4078 100644
--- a/client/components/camera.ts
+++ b/client/components/camera.ts
@@ -1,20 +1,17 @@
 import { Component } from "$/common/ecs/mod.ts";
 
 export class Camera extends Component {
-	active = true;
-	x: number;
-	y: number;
-	zoom: number;
-	rotation = 0;
-	offset_x = 0;
-	offset_y = 0;
+	x = 0;
+	y = 0;
+	z = 3;
 
-	constructor(x = 0, y = 0, zoom = 1) {
-		super();
-		this.x = x;
-		this.y = y;
-		this.zoom = zoom;
-	}
+	pitch = 0;
+	yaw = 0;
+	roll = 0;
+
+	fov = Math.PI / 3;
+	near = 0.1;
+	far = 1000;
 }
 
 export function screen_to_world(
@@ -24,10 +21,10 @@ export function screen_to_world(
 	screen_width: number,
 	screen_height: number,
 ) {
-	return {
-		x: (screen_x - screen_width / 2) / camera.zoom + camera.x,
-		y: (screen_y - screen_height / 2) / camera.zoom + camera.y,
-	};
+	// return {
+	// 	x: (screen_x - screen_width / 2) / camera.zoom + camera.x,
+	// 	y: (screen_y - screen_height / 2) / camera.zoom + camera.y,
+	// };
 }
 
 export function world_to_screen(
@@ -37,8 +34,8 @@ export function world_to_screen(
 	screen_width: number,
 	screen_height: number,
 ) {
-	return {
-		x: (world_x - camera.x) / camera.zoom + screen_width / 2,
-		y: (world_y - camera.y) / camera.zoom + screen_height / 2,
-	};
+	// return {
+	// 	x: (world_x - camera.x) / camera.zoom + screen_width / 2,
+	// 	y: (world_y - camera.y) / camera.zoom + screen_height / 2,
+	// };
 }
diff --git a/client/components/dimension.ts b/client/components/dimension.ts
index a9d7cbb..14a505f 100644
--- a/client/components/dimension.ts
+++ b/client/components/dimension.ts
@@ -7,6 +7,7 @@ import { Texture } from "../renderer/mod.ts";
 export interface Tile<T = unknown> {
 	x: number;
 	y: number;
+	z: number;
 	id: string;
 	data?: T;
 	tickable?: boolean;
diff --git a/client/components/player_controls.ts b/client/components/player_controls.ts
index 0b6e60e..eb3629b 100644
--- a/client/components/player_controls.ts
+++ b/client/components/player_controls.ts
@@ -2,11 +2,11 @@ import { Component } from "$/common/ecs/mod.ts";
 import { KeyCode } from "$/client/input_manager.ts";
 
 export class PlayerControls extends Component {
-	move_speed: number = 100;
+	move_speed: number = 5;
 
 	// Keys
-	move_up: KeyCode = "KeyW";
-	move_down: KeyCode = "KeyS";
+	move_forward: KeyCode = "KeyW";
+	move_backwards: KeyCode = "KeyS";
 	move_left: KeyCode = "KeyA";
 	move_right: KeyCode = "KeyD";
 
diff --git a/client/game.ts b/client/game.ts
index 76b836c..0527296 100644
--- a/client/game.ts
+++ b/client/game.ts
@@ -16,7 +16,7 @@ export function start_game(world: ClientWorld) {
 	world.dimension = new Dimension([]);
 	dimension.add(world.dimension);
 	world.add_entity(dimension);
-	generate(dimension.get(Dimension)!, 100, 100);
+	generate(dimension.get(Dimension)!, 20, 20);
 
 	create_player(world);
 
diff --git a/client/generation.ts b/client/generation.ts
index db90d1b..c3bbc3f 100644
--- a/client/generation.ts
+++ b/client/generation.ts
@@ -8,13 +8,13 @@ export function generate(dimension: Dimension, width: number, height: number, se
 
 	const scale = 0.05;
 
-	for (let y = 0; y < height; y++) {
+	for (let z = 0; z < height; z++) {
 		for (let x = 0; x < width; x++) {
 			// multi-octave terrain
 			const nx = x * scale;
-			const ny = y * scale;
+			const nz = z * scale;
 
-			let h = height_noise(nx, ny) * 1 + height_noise(nx * 2, ny * 2) * 0.5 + height_noise(nx * 4, ny * 4) * 0.25;
+			let h = height_noise(nx, nz) * 1 + height_noise(nx * 2, nz * 2) * 0.5 + height_noise(nx * 4, nz * 4) * 0.25;
 
 			h /= 1.75; // normalize
 
@@ -28,10 +28,10 @@ export function generate(dimension: Dimension, width: number, height: number, se
 				id = "bworld:grass";
 			}
 
-			dimension.tiles.push({ x, y, id });
+			dimension.tiles.push({ x, z, id, y: 0 });
 
 			// tree placement
-			if (id === "bworld:grass") {
+			/*if (id === "bworld:grass") {
 				const t = tree_noise(x * 0.12, y * 0.12);
 
 				if (t > 0.65) {
@@ -41,7 +41,7 @@ export function generate(dimension: Dimension, width: number, height: number, se
 						id: "bworld:tree",
 					});
 				}
-			}
+			}*/
 		}
 	}
 }
diff --git a/client/input_manager.ts b/client/input_manager.ts
index adaf0cf..e80c8c7 100644
--- a/client/input_manager.ts
+++ b/client/input_manager.ts
@@ -1,3 +1,5 @@
+import { canvas } from "./renderer/core.ts";
+
 export type KeyCode =
 	// letters
 	| "KeyA"
@@ -89,9 +91,16 @@ export class InputManager {
 
 	static typed_characters = new Set<string>();
 
+	static pointer_lock_flag = false;
+	static mouse_grab_timer = 0;
+	static mouse_ungrab_timer = 0;
+	static mouse_ungrab_timeout = -1;
+	static pointer_lock_waiting = false;
+
 	static initialize(canvas: HTMLCanvasElement) {
 		self.addEventListener("keydown", (e) => {
 			e.preventDefault();
+			e.stopPropagation();
 			if (!this.keys_down.has(e.code)) {
 				this.keys_pressed.add(e.code);
 			}
@@ -103,12 +112,18 @@ export class InputManager {
 
 		self.addEventListener("keyup", (e) => {
 			e.preventDefault();
+			e.stopPropagation();
 			this.keys_down.delete(e.code);
 			this.keys_released.add(e.code);
 		});
 
 		self.addEventListener("mousedown", (e) => {
 			e.preventDefault();
+			e.stopPropagation();
+			if (!document.hasFocus() && document.pointerLockElement !== canvas) {
+				this.set_mouse_grabbed(true);
+				return;
+			}
 			if (!this.mouse_buttons_down.has(e.button)) {
 				this.mouse_buttons_pressed.add(e.button);
 			}
@@ -121,22 +136,44 @@ export class InputManager {
 			this.mouse_buttons_released.add(e.button);
 		});
 
-		self.addEventListener("mousemove", (e) => {
-			e.preventDefault();
-			const rect = canvas.getBoundingClientRect();
-			const new_x = e.clientX - rect.left;
-			const new_y = e.clientY - rect.top;
-
-			this.mouse_delta_x += new_x - this.mouse_x;
-			this.mouse_delta_y += new_y - this.mouse_y;
-
-			this.mouse_x = new_x;
-			this.mouse_y = new_y;
-		});
-
 		self.addEventListener("wheel", (e) => {
 			this.wheel_delta += e.deltaY;
 		});
+
+		document.addEventListener("mousemove", (e) => {
+			e.preventDefault();
+			if (document.pointerLockElement) {
+				this.mouse_delta_x += e.movementX;
+				this.mouse_delta_y += e.movementY;
+			} else {
+				const rect = canvas.getBoundingClientRect();
+				const new_x = e.clientX - rect.left;
+				const new_y = e.clientY - rect.top;
+
+				this.mouse_delta_x += new_x - this.mouse_x;
+				this.mouse_delta_y += new_y - this.mouse_y;
+
+				this.mouse_x = new_x;
+				this.mouse_y = new_y;
+			}
+		});
+
+		document.addEventListener("pointerlockchange", () => {
+			self.setTimeout(() => {
+				const grab = document.pointerLockElement === canvas;
+				if (!grab) {
+					if (this.pointer_lock_flag) {
+						this.mouse_ungrab_timer = performance.now();
+					}
+				}
+				this.pointer_lock_flag = grab;
+			}, 60);
+			this.pointer_lock_waiting = false;
+		});
+
+		document.addEventListener("pointerlockerror", () => {
+			this.pointer_lock_waiting = false;
+		});
 	}
 
 	static is_key_down(code: KeyCode): boolean {
@@ -197,4 +234,47 @@ export class InputManager {
 		this.typed_characters.clear();
 		this.mouse_buttons_consumed.clear();
 	}
+
+	static async set_mouse_grabbed(grab: boolean) {
+		this.pointer_lock_flag = grab;
+		const t = performance.now();
+		this.mouse_grab_timer = t;
+		if (grab) {
+			this.mouse_x = -1;
+			this.mouse_y = -1;
+			this.pointer_lock_waiting = true;
+			try {
+				await canvas.requestPointerLock();
+			} catch (_) { /* */ }
+			if (this.mouse_ungrab_timeout !== -1) {
+				self.clearTimeout(this.mouse_ungrab_timeout);
+			}
+			this.mouse_ungrab_timeout = -1;
+			if (t - this.mouse_ungrab_timer < 3000) {
+				this.mouse_ungrab_timeout = self.setTimeout(async () => {
+					try {
+						await canvas.requestPointerLock();
+					} catch (_) { /* */ }
+				}, 3100 - (t - this.mouse_ungrab_timer));
+			}
+		} else {
+			if (this.mouse_ungrab_timeout !== -1) self.clearTimeout(this.mouse_ungrab_timeout);
+			this.mouse_ungrab_timeout = -1;
+			if (!this.pointer_lock_waiting) {
+				document.exitPointerLock();
+			}
+		}
+	}
+
+	static is_mouse_grabbed() {
+		return document.hasFocus() && document.pointerLockElement === canvas;
+	}
+
+	static toggle_fullscreen() {
+		if (!document.fullscreenElement) {
+			canvas.requestFullscreen();
+		} else {
+			document.exitFullscreen();
+		}
+	}
 }
diff --git a/client/player.ts b/client/player.ts
index 36c1a5c..4a0cdd6 100644
--- a/client/player.ts
+++ b/client/player.ts
@@ -4,9 +4,7 @@ import { Component, Entity } from "$/common/ecs/mod.ts";
 import { Camera } from "$/client/components/camera.ts";
 import { ItemStack, PlayerInventory } from "./inventory.ts";
 import { PlayerControls } from "$/client/components/player_controls.ts";
-import { AnimatedSprite, Sprite } from "$/client/components/sprite.ts";
 import { ClientWorld } from "./client_world.ts";
-import { AssetManager } from "./assets.ts";
 import { GuiScreen } from "./gui/gui_screen.ts";
 
 export class PlayerComponent extends Component {
@@ -23,26 +21,8 @@ export class PlayerComponent extends Component {
 
 export function create_player(world: ClientWorld) {
 	const player = new Entity("player");
-	player.add(new Position(1440, 700));
+	player.add(new Position(0, 0));
 	player.add(new Velocity(0, 0));
-	player.add(
-		new AnimatedSprite("bworld:player", 72, 72, {
-			"idle": {
-				source_x: [0, 24],
-				source_y: [0, 0],
-				source_width: 24,
-				source_height: 24,
-				duration: 60,
-			},
-			"running": {
-				source_x: [0, 24, 48, 72, 96, 120, 144, 168],
-				source_y: [24, 24, 24, 24, 24, 24, 24, 24],
-				source_width: 24,
-				source_height: 24,
-				duration: 20,
-			},
-		}, "idle"),
-	);
 	player.add(new PlayerControls());
 
 	player.add(new PlayerComponent());
@@ -58,14 +38,12 @@ export function create_player(world: ClientWorld) {
 	// player_inventory.container.add_item(new ItemStack("bworld:pumpkin_seeds", 64));
 	// player_inventory.container.add_item(new ItemStack("bworld:carrot_seeds", 64));
 	player_inventory.container.add_item(new ItemStack("bworld:furnace", 1));
-	player.add(new Camera(-100, -100));
+	player.add(new Camera());
 
 	world.add_entity(player);
 
 	const player_hand = new Entity("playerhand");
 	player_hand.add(new Position(0, 0));
-	// empty sprite
-	player_hand.add(new Sprite(AssetManager.instance.get("bworld:textures"), 0, 0));
 	world.add_entity(player_hand);
 
 	world.add_tag("player", [player, player_hand]);
diff --git a/client/renderer/core.ts b/client/renderer/core.ts
index 09e78c4..13ce0ff 100644
--- a/client/renderer/core.ts
+++ b/client/renderer/core.ts
@@ -1,33 +1,21 @@
 import { Camera } from "../components/camera.ts";
-import { mat4_mul, mat4_perspective, mat4_view } from "./math.ts";
+import { mat4 } from "gl-matrix";
+
+export let gl: WebGLRenderingContext;
+export let canvas: HTMLCanvasElement;
 
 const MAX_SPRITES = 10000;
 const VERTS_PER_SPRITE = 6;
 const FLOATS_PER_VERT = 9;
 
-export let gl: WebGLRenderingContext;
-export let canvas: HTMLCanvasElement;
 let program: WebGLProgram;
 let buffer: WebGLBuffer;
 
-// const default_camera = new Camera();
-// let camera: Camera = default_camera;
-//
-// let camera_pos_loc: WebGLUniformLocation | null;
-// let camera_zoom_loc: WebGLUniformLocation | null;
-// let camera_rot_loc: WebGLUniformLocation | null;
-// let camera_offset_loc: WebGLUniformLocation | null;
-
-export const projection = new Float32Array(16);
-export const view = new Float32Array(16);
-export const mvp_matrix = new Float32Array(16);
-
 const vertex_data = new Float32Array(MAX_SPRITES * VERTS_PER_SPRITE * FLOATS_PER_VERT);
 let vert_index = 0;
 
 let pos_loc: GLint;
 let uv_loc: GLint;
-let resolution_loc: WebGLUniformLocation | null;
 let texture_loc: WebGLUniformLocation | null;
 let mvp_loc: WebGLUniformLocation | null;
 let col_diffuse_loc: WebGLUniformLocation | null;
@@ -35,22 +23,14 @@ let col_diffuse_loc: WebGLUniformLocation | null;
 let current_texture: WebGLTexture | null = null;
 export let white_tex: WebGLTexture | null = null;
 
-export const camera = {
-	x: 3,
-	y: 3,
-	z: 3,
-
-	pitch: 0,
-	yaw: 0,
-	roll: 0,
-
-	fov: Math.PI / 3,
-	near: 0.1,
-	far: 1000,
-};
-
 let mode3d = false;
-let active_camera = camera;
+
+let camera: Camera | undefined;
+
+const ortho = mat4.create();
+const proj = mat4.create();
+const view = mat4.create();
+const mvp = mat4.create();
 
 const vertex_src = `#version 300 es
 precision mediump float;
@@ -121,15 +101,13 @@ export function init_window(canvas_element: HTMLCanvasElement) {
 	gl.enable(gl.BLEND);
 	gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
 
-	gl.disable(gl.CULL_FACE);
-
 	create_white_texture();
-
-	update_mvp(canvas.width, canvas.height);
 }
 
 export function begin_drawing() {
 	update_2d_mvp();
+	gl.depthFunc(gl.LEQUAL);
+	gl.clearDepth(1.0);
 	gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
 	vert_index = 0;
 }
@@ -138,49 +116,35 @@ export function end_drawing() {
 	flush_batch();
 }
 
-export const ortho_matrix = new Float32Array(16);
-
-export function update_2d_mvp() {
+function update_2d_mvp() {
 	const w = canvas.width;
 	const h = canvas.height;
-	const l = 0, r = w, t = 0, b = h, n = -1, f = 1;
 
-	ortho_matrix[0] = 2 / (r - l);
-	ortho_matrix[1] = 0;
-	ortho_matrix[2] = 0;
-	ortho_matrix[3] = 0;
+	const l = 0;
+	const r = w;
+	const t = 0;
+	const b = h;
+	const n = -1;
+	const f = 1;
 
-	ortho_matrix[4] = 0;
-	ortho_matrix[5] = 2 / (t - b);
-	ortho_matrix[6] = 0;
-	ortho_matrix[7] = 0;
-
-	ortho_matrix[8] = 0;
-	ortho_matrix[9] = 0;
-	ortho_matrix[10] = -2 / (f - n);
-	ortho_matrix[11] = 0;
-
-	ortho_matrix[12] = -(r + l) / (r - l);
-	ortho_matrix[13] = -(t + b) / (t - b);
-	ortho_matrix[14] = -(f + n) / (f - n);
-	ortho_matrix[15] = 1;
+	mat4.ortho(ortho, l, r, b, t, n, f);
 }
 
-export function begin_mode_2d(new_camera: Camera) {
-	mode3d = false;
+//export function begin_mode_2d(new_camera: Camera) {
+//	mode3d = false;
+//
+//	gl.disable(gl.DEPTH_TEST);
+//
+//	vert_index = 0;
+//
+//	update_2d_mvp();
+//	gl.uniformMatrix4fv(mvp_loc, false, ortho_matrix);
+//}
 
-	gl.disable(gl.DEPTH_TEST);
-
-	vert_index = 0;
-
-	update_2d_mvp();
-	gl.uniformMatrix4fv(mvp_loc, false, ortho_matrix);
-}
-
-export function end_mode_2d() {
-	flush_batch();
-	// camera = default_camera;
-}
+// export function end_mode_2d() {
+// 	flush_batch();
+// 	// camera = default_camera;
+// }
 
 export function begin_clip(x: number, y: number, width: number, height: number) {
 	gl.enable(gl.SCISSOR_TEST);
@@ -194,6 +158,28 @@ export function end_clip() {
 	gl.disable(gl.SCISSOR_TEST);
 }
 
+export function begin_mode_3d(new_camera: Camera) {
+	flush_batch();
+
+	mode3d = true;
+	camera = new_camera;
+
+	gl.enable(gl.DEPTH_TEST);
+
+	update_camera();
+}
+
+export function end_mode_3d() {
+	if (!mode3d) {
+		return;
+	}
+
+	flush_batch();
+
+	mode3d = false;
+	gl.disable(gl.DEPTH_TEST);
+}
+
 export function clear_background(r: number, g: number, b: number, a = 1) {
 	gl.clearColor(r, g, b, a);
 	gl.clear(gl.COLOR_BUFFER_BIT);
@@ -208,9 +194,9 @@ export function flush_batch() {
 	gl.bufferData(gl.ARRAY_BUFFER, vertex_data.subarray(0, vert_index), gl.STREAM_DRAW);
 
 	if (mode3d) {
-		gl.uniformMatrix4fv(mvp_loc, false, mvp_matrix);
+		gl.uniformMatrix4fv(mvp_loc, false, mvp);
 	} else {
-		gl.uniformMatrix4fv(mvp_loc, false, ortho_matrix);
+		gl.uniformMatrix4fv(mvp_loc, false, ortho);
 	}
 
 	gl.uniform4f(col_diffuse_loc, 1, 1, 1, 1);
@@ -224,6 +210,44 @@ export function flush_batch() {
 	vert_index = 0;
 }
 
+export function resize_canvas() {
+	const width = self.innerWidth;
+	const height = self.innerHeight;
+
+	if (canvas.width !== width || canvas.height !== height) {
+		canvas.width = width;
+		canvas.height = height;
+		canvas.style.width = canvas.width + "px";
+		canvas.style.height = canvas.height + "px";
+
+		gl.viewport(0, 0, width, height);
+
+		gl.useProgram(program);
+	}
+}
+
+export function get_current_texture(): WebGLTexture | null {
+	return current_texture;
+}
+
+export function set_current_texture(texture: WebGLTexture) {
+	current_texture = texture;
+}
+
+export function push_vertex(px: number, py: number, pz: number, u: number, vv: number, r = 1, g = 1, b = 1, a = 1) {
+	let i = vert_index;
+	vertex_data[i++] = px;
+	vertex_data[i++] = py;
+	vertex_data[i++] = pz;
+	vertex_data[i++] = u;
+	vertex_data[i++] = vv;
+	vertex_data[i++] = r;
+	vertex_data[i++] = g;
+	vertex_data[i++] = b;
+	vertex_data[i++] = a;
+	vert_index = i;
+}
+
 export function push_quad(
 	dx: number,
 	dy: number,
@@ -241,97 +265,41 @@ export function push_quad(
 	const x2 = dx + dw;
 	const y2 = dy + dh;
 
-	let i = vert_index;
-
 	// triangle 1
-	vertex_data[i++] = dx;
-	vertex_data[i++] = dy;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u0;
-	vertex_data[i++] = v0;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
-
-	vertex_data[i++] = x2;
-	vertex_data[i++] = dy;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u1;
-	vertex_data[i++] = v0;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
-
-	vertex_data[i++] = dx;
-	vertex_data[i++] = y2;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u0;
-	vertex_data[i++] = v1;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
+	push_vertex(dx, dy, 0, u0, v0, r, g, b, a);
+	push_vertex(x2, dy, 0, u1, v0, r, g, b, a);
+	push_vertex(dx, y2, 0, u0, v1, r, g, b, a);
 
 	// triangle 2
-	vertex_data[i++] = x2;
-	vertex_data[i++] = dy;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u1;
-	vertex_data[i++] = v0;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
-
-	vertex_data[i++] = x2;
-	vertex_data[i++] = y2;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u1;
-	vertex_data[i++] = v1;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
-
-	vertex_data[i++] = dx;
-	vertex_data[i++] = y2;
-	vertex_data[i++] = 0;
-	vertex_data[i++] = u0;
-	vertex_data[i++] = v1;
-	vertex_data[i++] = r;
-	vertex_data[i++] = g;
-	vertex_data[i++] = b;
-	vertex_data[i++] = a;
-
-	vert_index = i;
+	push_vertex(x2, dy, 0, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, 0, u1, v1, r, g, b, a);
+	push_vertex(dx, y2, 0, u0, v1, r, g, b, a);
 }
 
-export function resize_canvas() {
-	const width = self.innerWidth;
-	const height = self.innerHeight;
+// internal
 
-	if (canvas.width !== width || canvas.height !== height) {
-		canvas.width = width;
-		canvas.height = height;
-		canvas.style.width = canvas.width + "px";
-		canvas.style.height = canvas.height + "px";
-
-		gl.viewport(0, 0, width, height);
-
-		gl.useProgram(program);
-		// gl.uniform2f(resolution_loc, width, height);
-		update_mvp(canvas.width, canvas.height);
+function update_camera() {
+	if (!camera) {
+		return;
 	}
-}
 
-export function get_current_texture(): WebGLTexture | null {
-	return current_texture;
-}
+	mat4.perspective(
+		proj,
+		camera.fov,
+		canvas.width / canvas.height,
+		camera.near,
+		camera.far,
+	);
 
-export function set_current_texture(texture: WebGLTexture) {
-	current_texture = texture;
+	mat4.identity(view);
+
+	mat4.rotateZ(view, view, -camera.roll);
+	mat4.rotateX(view, view, -camera.pitch);
+	mat4.rotateY(view, view, -camera.yaw);
+
+	mat4.translate(view, view, [-camera.x, -camera.y, -camera.z]);
+
+	mat4.multiply(mvp, proj, view);
 }
 
 function compile_shader(type: number, src: string) {
@@ -378,151 +346,3 @@ function create_white_texture() {
 
 	white_tex = tex;
 }
-
-function update_mvp(width: number, height: number) {
-	const l = 0;
-	const r = width;
-	const b = height;
-	const t = 0;
-	const n = -1;
-	const f = 1;
-
-	mvp_matrix[0] = 2 / (r - l);
-	mvp_matrix[1] = 0;
-	mvp_matrix[2] = 0;
-	mvp_matrix[3] = 0;
-
-	mvp_matrix[4] = 0;
-	mvp_matrix[5] = 2 / (t - b);
-	mvp_matrix[6] = 0;
-	mvp_matrix[7] = 0;
-
-	mvp_matrix[8] = 0;
-	mvp_matrix[9] = 0;
-	mvp_matrix[10] = -2 / (f - n);
-	mvp_matrix[11] = 0;
-
-	mvp_matrix[12] = -(r + l) / (r - l);
-	mvp_matrix[13] = -(t + b) / (t - b);
-	mvp_matrix[14] = -(f + n) / (f - n);
-	mvp_matrix[15] = 1;
-}
-
-export function push_cube(
-	x: number,
-	y: number,
-	z: number,
-	w: number,
-	h: number,
-	d: number,
-	r = 1,
-	g = 1,
-	b = 1,
-	a = 1,
-) {
-	set_current_texture(white_tex!);
-
-	const x2 = x + w;
-	const y2 = y + h;
-	const z2 = z + d;
-
-	const u0 = 0, v0 = 0;
-	const u1 = 1, v1 = 1;
-
-	let i = vert_index;
-
-	function v(px: number, py: number, pz: number, u: number, vv: number) {
-		vertex_data[i++] = px;
-		vertex_data[i++] = py;
-		vertex_data[i++] = pz;
-		vertex_data[i++] = u;
-		vertex_data[i++] = vv;
-		vertex_data[i++] = r;
-		vertex_data[i++] = g;
-		vertex_data[i++] = b;
-		vertex_data[i++] = a;
-	}
-
-	v(x, y, z2, u0, v0);
-	v(x2, y, z2, u1, v0);
-	v(x, y2, z2, u0, v1);
-	v(x2, y, z2, u1, v0);
-	v(x2, y2, z2, u1, v1);
-	v(x, y2, z2, u0, v1);
-
-	v(x2, y, z, u0, v0);
-	v(x, y, z, u1, v0);
-	v(x2, y2, z, u0, v1);
-	v(x, y, z, u1, v0);
-	v(x, y2, z, u1, v1);
-	v(x2, y2, z, u0, v1);
-
-	v(x, y, z, u0, v0);
-	v(x, y, z2, u1, v0);
-	v(x, y2, z, u0, v1);
-	v(x, y, z2, u1, v0);
-	v(x, y2, z2, u1, v1);
-	v(x, y2, z, u0, v1);
-
-	v(x2, y, z2, u0, v0);
-	v(x2, y, z, u1, v0);
-	v(x2, y2, z2, u0, v1);
-	v(x2, y, z, u1, v0);
-	v(x2, y2, z, u1, v1);
-	v(x2, y2, z2, u0, v1);
-
-	v(x, y2, z2, u0, v0);
-	v(x2, y2, z2, u1, v0);
-	v(x, y2, z, u0, v1);
-	v(x2, y2, z2, u1, v0);
-	v(x2, y2, z, u1, v1);
-	v(x, y2, z, u0, v1);
-
-	v(x, y, z, u0, v0);
-	v(x2, y, z, u1, v0);
-	v(x, y, z2, u0, v1);
-	v(x2, y, z, u1, v0);
-	v(x2, y, z2, u1, v1);
-	v(x, y, z2, u0, v1);
-
-	vert_index = i;
-}
-
-export function begin_mode_3d() {
-	flush_batch();
-
-	mode3d = true;
-	active_camera = camera;
-
-	gl.enable(gl.DEPTH_TEST);
-	gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
-
-	vert_index = 0;
-
-	update_camera();
-}
-
-export function end_mode_3d() {
-	if (!mode3d) {
-		return;
-	}
-
-	flush_batch();
-
-	mode3d = false;
-	gl.disable(gl.DEPTH_TEST);
-}
-
-export function update_camera() {
-	mat4_perspective(
-		projection,
-		camera.fov,
-		canvas.width / canvas.height,
-		camera.near,
-		camera.far,
-	);
-
-	mat4_view(view);
-
-	mat4_mul(mvp_matrix, projection, view);
-}
diff --git a/client/renderer/math.ts b/client/renderer/math.ts
deleted file mode 100644
index 9e05bc7..0000000
--- a/client/renderer/math.ts
+++ /dev/null
@@ -1,84 +0,0 @@
-import { camera } from "./core.ts";
-
-export function mat4_perspective(out: Float32Array, fov: number, aspect: number, near: number, far: number) {
-	const f = 1 / Math.tan(fov / 2);
-
-	out[0] = f / aspect;
-	out[1] = 0;
-	out[2] = 0;
-	out[3] = 0;
-
-	out[4] = 0;
-	out[5] = f;
-	out[6] = 0;
-	out[7] = 0;
-
-	out[8] = 0;
-	out[9] = 0;
-	out[10] = -(far + near) / (far - near);
-	out[11] = -1;
-
-	out[12] = 0;
-	out[13] = 0;
-	out[14] = -(2 * far * near) / (far - near);
-	out[15] = 0;
-}
-
-export function mat4_view(out: Float32Array) {
-	const cx = camera.x;
-	const cy = camera.y;
-	const cz = camera.z;
-
-	const yaw = camera.yaw;
-	const pitch = camera.pitch;
-
-	const cosY = Math.cos(yaw);
-	const sinY = Math.sin(yaw);
-	const cosP = Math.cos(pitch);
-	const sinP = Math.sin(pitch);
-
-	const fx = cosP * sinY;
-	const fy = sinP;
-	const fz = cosP * cosY;
-
-	const rx = cosY;
-	const rz = -sinY;
-
-	const ux = -sinP * sinY;
-	const uy = cosP;
-	const uz = -sinP * cosY;
-
-	out[0] = rx;
-	out[1] = ux;
-	out[2] = -fx;
-	out[3] = 0;
-
-	out[4] = 0;
-	out[5] = uy;
-	out[6] = -fy;
-	out[7] = 0;
-
-	out[8] = rz;
-	out[9] = uz;
-	out[10] = -fz;
-	out[11] = 0;
-
-	out[12] = -(rx * cx + rz * cz);
-	out[13] = -(ux * cx + uy * cy + uz * cz);
-	out[14] = fx * cx + fy * cy + fz * cz;
-	out[15] = 1;
-}
-
-export function mat4_mul(out: Float32Array, a: Float32Array, b: Float32Array) {
-	for (let i = 0; i < 4; i++) {
-		const ai0 = a[i];
-		const ai1 = a[i + 4];
-		const ai2 = a[i + 8];
-		const ai3 = a[i + 12];
-
-		out[i] = ai0 * b[0] + ai1 * b[1] + ai2 * b[2] + ai3 * b[3];
-		out[i + 4] = ai0 * b[4] + ai1 * b[5] + ai2 * b[6] + ai3 * b[7];
-		out[i + 8] = ai0 * b[8] + ai1 * b[9] + ai2 * b[10] + ai3 * b[11];
-		out[i + 12] = ai0 * b[12] + ai1 * b[13] + ai2 * b[14] + ai3 * b[15];
-	}
-}
diff --git a/client/renderer/mod.ts b/client/renderer/mod.ts
index 62651b5..807e7da 100644
--- a/client/renderer/mod.ts
+++ b/client/renderer/mod.ts
@@ -2,4 +2,5 @@ export * from "./core.ts";
 export * from "./shapes.ts";
 export * from "./textures.ts";
 export * from "./text.ts";
+export * from "./models.ts";
 export * from "./types.ts";
diff --git a/client/renderer/models.ts b/client/renderer/models.ts
new file mode 100644
index 0000000..b453d1c
--- /dev/null
+++ b/client/renderer/models.ts
@@ -0,0 +1,76 @@
+import { flush_batch, get_current_texture, push_vertex, set_current_texture } from "./core.ts";
+import { Texture } from "./types.ts";
+
+export function push_cube(
+	texture: Texture,
+	x: number,
+	y: number,
+	z: number,
+	w: number,
+	h: number,
+	d: number,
+	sx: number,
+	sy: number,
+	sw: number,
+	sh: number,
+	r = 1,
+	g = 1,
+	b = 1,
+	a = 1,
+) {
+	if (get_current_texture() !== texture.tex) {
+		flush_batch();
+		set_current_texture(texture.tex);
+	}
+
+	const x2 = x + w;
+	const y2 = y + h;
+	const z2 = z + d;
+
+	const u0 = sx / texture.width;
+	const v0 = sy / texture.height;
+	const u1 = (sx + sw) / texture.width;
+	const v1 = (sy + sh) / texture.height;
+
+	push_vertex(x, y, z2, u0, v0, r, g, b, a);
+	push_vertex(x2, y, z2, u1, v0, r, g, b, a);
+	push_vertex(x, y2, z2, u0, v1, r, g, b, a);
+	push_vertex(x2, y, z2, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, z2, u1, v1, r, g, b, a);
+	push_vertex(x, y2, z2, u0, v1, r, g, b, a);
+
+	push_vertex(x2, y, z, u0, v0, r, g, b, a);
+	push_vertex(x, y, z, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, z, u0, v1, r, g, b, a);
+	push_vertex(x, y, z, u1, v0, r, g, b, a);
+	push_vertex(x, y2, z, u1, v1, r, g, b, a);
+	push_vertex(x2, y2, z, u0, v1, r, g, b, a);
+
+	push_vertex(x, y, z, u0, v0, r, g, b, a);
+	push_vertex(x, y, z2, u1, v0, r, g, b, a);
+	push_vertex(x, y2, z, u0, v1, r, g, b, a);
+	push_vertex(x, y, z2, u1, v0, r, g, b, a);
+	push_vertex(x, y2, z2, u1, v1, r, g, b, a);
+	push_vertex(x, y2, z, u0, v1, r, g, b, a);
+
+	push_vertex(x2, y, z2, u0, v0, r, g, b, a);
+	push_vertex(x2, y, z, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, z2, u0, v1, r, g, b, a);
+	push_vertex(x2, y, z, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, z, u1, v1, r, g, b, a);
+	push_vertex(x2, y2, z2, u0, v1, r, g, b, a);
+
+	push_vertex(x, y2, z2, u0, v0, r, g, b, a);
+	push_vertex(x2, y2, z2, u1, v0, r, g, b, a);
+	push_vertex(x, y2, z, u0, v1, r, g, b, a);
+	push_vertex(x2, y2, z2, u1, v0, r, g, b, a);
+	push_vertex(x2, y2, z, u1, v1, r, g, b, a);
+	push_vertex(x, y2, z, u0, v1, r, g, b, a);
+
+	push_vertex(x, y, z, u0, v0, r, g, b, a);
+	push_vertex(x2, y, z, u1, v0, r, g, b, a);
+	push_vertex(x, y, z2, u0, v1, r, g, b, a);
+	push_vertex(x2, y, z, u1, v0, r, g, b, a);
+	push_vertex(x2, y, z2, u1, v1, r, g, b, a);
+	push_vertex(x, y, z2, u0, v1, r, g, b, a);
+}
diff --git a/client/systems/dimension_logic.ts b/client/systems/dimension_logic.ts
index 1b0b839..916dc8c 100644
--- a/client/systems/dimension_logic.ts
+++ b/client/systems/dimension_logic.ts
@@ -11,7 +11,7 @@ import { distance_point_rectangle } from "../../common/utils.ts";
 
 export class DimensionLogicSystem extends System {
 	update(world: ClientWorld, delta: number): void {
-		const dimension_entity = world.get_entities().values().find((ent) => ent.get(Dimension));
+		/*const dimension_entity = world.get_entities().values().find((ent) => ent.get(Dimension));
 		const dimension = dimension_entity!.get(Dimension)!;
 
 		dimension.second_timer += delta;
@@ -72,7 +72,7 @@ export class DimensionLogicSystem extends System {
 					tile_info.on_click(world, tile);
 				}
 			}
-		}
+		}*/
 	}
 	handle_second(world: ClientWorld, dimension: Dimension) {
 		const tickables = dimension.tiles.filter((t) => t.tickable);
diff --git a/client/systems/player_controls.ts b/client/systems/player_controls.ts
index 414a56c..6a878d9 100644
--- a/client/systems/player_controls.ts
+++ b/client/systems/player_controls.ts
@@ -1,12 +1,10 @@
 import { System } from "$/common/ecs/mod.ts";
 import { Velocity } from "$/common/components/velocity.ts";
 import { InputManager } from "../input_manager.ts";
-import { AnimatedSprite } from "../components/sprite.ts";
 import { ClientWorld } from "../client_world.ts";
 import { PlayerControls } from "../components/player_controls.ts";
 import { Camera } from "../components/camera.ts";
 import { Position } from "../../common/components/position.ts";
-import { canvas } from "../renderer/mod.ts";
 import { PlayerComponent } from "../player.ts";
 import { GuiPlayerInventory } from "../gui/gui_player_inventory.ts";
 
@@ -20,40 +18,51 @@ export class PlayerControlsSystem extends System {
 		const velocity = player.get(Velocity)!;
 		const controls = player.get(PlayerControls)!;
 		const player_component = player.get(PlayerComponent)!;
+		const position = player.get(Position)!;
+		const camera = player.get(Camera)!;
+
+		let input_x = 0;
+		let input_z = 0;
 
 		if (InputManager.is_key_down(controls.move_left)) {
-			velocity.vx = -controls.move_speed;
-		} else if (InputManager.is_key_down(controls.move_right)) {
-			velocity.vx = controls.move_speed;
-		} else {
-			velocity.vx = 0;
+			input_x -= 1;
+		}
+		if (InputManager.is_key_down(controls.move_right)) {
+			input_x += 1;
+		}
+		if (InputManager.is_key_down(controls.move_forward)) {
+			input_z -= 1;
+		}
+		if (InputManager.is_key_down(controls.move_backwards)) {
+			input_z += 1;
 		}
 
-		if (InputManager.is_key_down(controls.move_up)) {
-			velocity.vy = -controls.move_speed;
-		} else if (InputManager.is_key_down(controls.move_down)) {
-			velocity.vy = controls.move_speed;
+		const size = Math.hypot(input_x, input_z);
+		if (size > 0) {
+			input_x /= size;
+			input_z /= size;
+		}
+
+		const sin = Math.sin(camera.yaw);
+		const cos = Math.cos(camera.yaw);
+
+		const forwardX = sin;
+		const forwardZ = cos;
+
+		const rightX = cos;
+		const rightZ = -sin;
+
+		velocity.vx = (forwardX * input_z + rightX * input_x) * controls.move_speed;
+		velocity.vz = (forwardZ * input_z + rightZ * input_x) * controls.move_speed;
+
+		if (InputManager.is_key_down("Space")) {
+			velocity.vy += controls.move_speed / 10;
+		} else if (InputManager.is_key_down("ShiftLeft")) {
+			velocity.vy -= controls.move_speed / 10;
 		} else {
 			velocity.vy = 0;
 		}
 
-		const animated_sprite = player.get(AnimatedSprite)!;
-
-		if (
-			InputManager.is_key_down(controls.move_up) || InputManager.is_key_down(controls.move_down) ||
-			InputManager.is_key_down(controls.move_left) || InputManager.is_key_down(controls.move_right)
-		) {
-			animated_sprite.set_state("running");
-		} else {
-			animated_sprite.set_state("idle");
-		}
-
-		if (InputManager.is_key_down(controls.move_left)) {
-			animated_sprite.flip_x = false;
-		} else if (InputManager.is_key_down(controls.move_right)) {
-			animated_sprite.flip_x = true;
-		}
-
 		if (InputManager.is_key_pressed(controls.open_inventory)) {
 			if (player_component.screens.length === 0) {
 				player_component.screens.push(new GuiPlayerInventory(player_component.player_inventory));
@@ -66,13 +75,24 @@ export class PlayerControlsSystem extends System {
 			world.debugging = !world.debugging;
 		}
 
-		const position = player.get(Position)!;
-		const camera = player.get(Camera)!;
+		if (InputManager.is_key_pressed("F11")) {
+			InputManager.toggle_fullscreen();
+		}
 
-		camera.x = Math.round(position.x);
-		camera.y = Math.round(position.y);
-		camera.offset_x = Math.floor(canvas.width / 2);
-		camera.offset_y = Math.floor(canvas.height / 2);
+		camera.x = position.x;
+		camera.y = position.y + 1.79;
+		camera.z = position.z;
+
+		if (InputManager.is_mouse_grabbed()) {
+			const mouse_delta = InputManager.get_mouse_delta();
+			camera.yaw += -mouse_delta.x * 0.001;
+			camera.pitch += -mouse_delta.y * 0.001;
+
+			const limit = Math.PI / 2 - 0.01;
+			camera.pitch = Math.max(-limit, Math.min(limit, camera.pitch));
+		}
+
+		InputManager.set_mouse_grabbed(player_component.screens.length === 0);
 
 		if (player_component.screens.length === 0) {
 			const player_inventory = player_component.player_inventory;
diff --git a/client/systems/render_system.ts b/client/systems/render_system.ts
index 015c2cc..6a08125 100644
--- a/client/systems/render_system.ts
+++ b/client/systems/render_system.ts
@@ -8,9 +8,8 @@ import { Camera } from "$/client/components/camera.ts";
 import { render_animated_sprite, render_sprite } from "./rendering/sprites.ts";
 import { render_dimension } from "./rendering/dimension.ts";
 import { render_player_hotbar } from "./rendering/player.ts";
-import { begin_mode_2d, end_mode_2d } from "../renderer/mod.ts";
 import { PlayerComponent } from "../player.ts";
-import { begin_mode_3d, end_mode_3d, push_cube } from "../renderer/core.ts";
+import { begin_mode_3d, end_mode_3d } from "../renderer/core.ts";
 
 export class RenderSystem extends System {
 	constructor() {
@@ -18,83 +17,42 @@ export class RenderSystem extends System {
 	}
 
 	update(world: World, _delta: number): void {
-		/*const camera_entity = world.get_entities().values().find((e) => e.get(Camera)?.active);
+		const camera_entity = world.get_entities().values().find((e) => e.get(Camera));
 		const camera = camera_entity?.get(Camera);
 
 		if (!camera) {
 			return;
 		}
 
-		begin_mode_2d(camera);
+		begin_mode_3d(camera);
 
 		for (const entity of world.get_entities()) {
-			const position = entity.get(Position);
-			const sprite = entity.get(Sprite);
-
-			if (sprite && position) {
-				render_sprite(sprite, position, camera);
-			}
-
-			const animated_sprite = entity.get(AnimatedSprite);
-
-			if (animated_sprite && position) {
-				render_animated_sprite(animated_sprite, position, camera);
-			}
-
 			const dimension = entity.get(Dimension);
 
 			if (dimension) {
-				render_dimension(dimension, camera);
+				render_dimension(dimension /*, camera*/);
 			}
 		}
 
-		end_mode_2d();
+		end_mode_3d();
 
 		for (const entity of world.get_entities()) {
-			const player_component = entity.get(PlayerComponent);
+			const position = entity.get(Position);
 
+			const sprite = entity.get(Sprite);
+			if (position && sprite) {
+				render_sprite(sprite, position);
+			}
+
+			const animated_sprite = entity.get(AnimatedSprite);
+			if (position && animated_sprite) {
+				render_animated_sprite(animated_sprite, position);
+			}
+
+			const player_component = entity.get(PlayerComponent);
 			if (player_component) {
 				render_player_hotbar(player_component.player_inventory);
 			}
-		}*/
-
-		begin_mode_3d();
-		push_cube(
-			-0.5,
-			-0.5,
-			-0.5,
-			1,
-			1,
-			1,
-			1,
-			0,
-			0,
-			1,
-		);
-		push_cube(
-			0.5,
-			0.5,
-			0.5,
-			1,
-			1,
-			1,
-			1,
-			0,
-			0,
-			1,
-		);
-		push_cube(
-			0,
-			0,
-			0,
-			1,
-			1,
-			1,
-			1,
-			0,
-			0,
-			1,
-		);
-		end_mode_3d();
+		}
 	}
 }
diff --git a/client/systems/rendering/dimension.ts b/client/systems/rendering/dimension.ts
index fb9da57..97530bb 100644
--- a/client/systems/rendering/dimension.ts
+++ b/client/systems/rendering/dimension.ts
@@ -1,23 +1,11 @@
 import { get_sprite_region } from "$/common/utils.ts";
 import { Dimension } from "$/client/components/dimension.ts";
-import { TEXTURE_SIZE, TILE_SIZE } from "$/common/constants.ts";
-import { Camera, world_to_screen } from "$/client/components/camera.ts";
-import { canvas, draw_texture_region } from "$/client/renderer/mod.ts";
+import { TEXTURE_SIZE } from "$/common/constants.ts";
 import { EverythingRegistry, TileRegistry } from "$/common/everything_registry.ts";
+import { push_cube } from "$/client/renderer/mod.ts";
 
-export function render_dimension(dimension: Dimension, camera: Camera) {
+export function render_dimension(dimension: Dimension /*, camera: Camera*/) {
 	for (const tile of dimension.tiles) {
-		const x = tile.x * TILE_SIZE;
-		const y = tile.y * TILE_SIZE;
-
-		const screen_position = world_to_screen(x, y, camera, canvas.width, canvas.height);
-		if (
-			screen_position.x + TILE_SIZE < 0 || screen_position.x > canvas.width ||
-			screen_position.y + TILE_SIZE < 0 || screen_position.y > canvas.height
-		) {
-			continue;
-		}
-
 		let texture_id = tile.id;
 		const tile_info = EverythingRegistry.get<TileRegistry>("tiles", tile.id);
 		if (tile_info?.texture_id) {
@@ -30,16 +18,18 @@ export function render_dimension(dimension: Dimension, camera: Camera) {
 
 		const region = get_sprite_region(texture_id);
 
-		draw_texture_region(
+		push_cube(
 			dimension.image,
+			tile.x,
+			tile.y,
+			tile.z,
+			1,
+			1,
+			1,
 			region.x * TEXTURE_SIZE,
 			region.y * TEXTURE_SIZE,
 			TEXTURE_SIZE,
 			TEXTURE_SIZE,
-			x,
-			y,
-			TILE_SIZE,
-			TILE_SIZE,
 		);
 	}
 }
diff --git a/client/systems/rendering/sprites.ts b/client/systems/rendering/sprites.ts
index e9b6a7a..aef3169 100644
--- a/client/systems/rendering/sprites.ts
+++ b/client/systems/rendering/sprites.ts
@@ -1,12 +1,8 @@
 import { Position } from "$/common/components/position.ts";
 import { AnimatedSprite, Sprite } from "$/client/components/sprite.ts";
 import { draw_texture_region } from "$/client/renderer/mod.ts";
-import { Camera } from "$/client/components/camera.ts";
 
-// TODO: camera scale
-// TODO: only render if inside screen
-
-export function render_sprite(sprite: Sprite, position: Position, _camera: Camera) {
+export function render_sprite(sprite: Sprite, position: Position) {
 	draw_texture_region(
 		sprite.image,
 		sprite.source_x,
@@ -25,7 +21,6 @@ export function render_sprite(sprite: Sprite, position: Position, _camera: Camer
 export function render_animated_sprite(
 	animated_sprite: AnimatedSprite,
 	position: Position,
-	_camera: Camera,
 ) {
 	const current_animation = animated_sprite.states[animated_sprite.current_state];
 	if (!current_animation) {
diff --git a/common/components/position.ts b/common/components/position.ts
index 55cbc49..b69f182 100644
--- a/common/components/position.ts
+++ b/common/components/position.ts
@@ -3,10 +3,12 @@ import { Component } from "$/common/ecs/component.ts";
 export class Position extends Component {
 	x: number;
 	y: number;
+	z: number;
 
-	constructor(x: number, y: number) {
+	constructor(x: number, y: number, z = 0) {
 		super();
 		this.x = x;
 		this.y = y;
+		this.z = z;
 	}
 }
diff --git a/common/components/velocity.ts b/common/components/velocity.ts
index 6e272f8..0dbe215 100644
--- a/common/components/velocity.ts
+++ b/common/components/velocity.ts
@@ -3,10 +3,12 @@ import { Component } from "$/common/ecs/component.ts";
 export class Velocity extends Component {
 	vx: number;
 	vy: number;
+	vz: number;
 
-	constructor(vx: number, vy: number) {
+	constructor(vx: number, vy: number, vz = 0) {
 		super();
 		this.vx = vx;
 		this.vy = vy;
+		this.vz = vz;
 	}
 }
diff --git a/common/systems/movement_system.ts b/common/systems/movement_system.ts
index 78a4cc2..d94fdcb 100644
--- a/common/systems/movement_system.ts
+++ b/common/systems/movement_system.ts
@@ -11,8 +11,7 @@ export class MovementSystem extends System {
 			if (position && velocity) {
 				position.x += velocity.vx * delta;
 				position.y += velocity.vy * delta;
-				position.x = Math.round(position.x);
-				position.y = Math.round(position.y);
+				position.z += velocity.vz * delta;
 			}
 		}
 	}
diff --git a/deno.json b/deno.json
index 5147f5e..897a831 100644
--- a/deno.json
+++ b/deno.json
@@ -18,6 +18,7 @@
 		"@gfx/canvas-wasm": "jsr:@gfx/canvas-wasm@^0.4.2",
 		"@paulaboks/rng": "jsr:@paulaboks/rng@^0.0.2",
 		"@std/fs": "jsr:@std/fs@^1.0.23",
+		"gl-matrix": "npm:gl-matrix@^3.4.4",
 		"marked": "npm:marked@^17.0.3"
 	}
 }
diff --git a/deno.lock b/deno.lock
index 85b5ff8..c85a0e8 100644
--- a/deno.lock
+++ b/deno.lock
@@ -7,6 +7,7 @@
     "jsr:@std/fs@^1.0.23": "1.0.23",
     "jsr:@std/internal@^1.0.12": "1.0.12",
     "jsr:@std/path@^1.1.4": "1.1.4",
+    "npm:gl-matrix@^3.4.4": "3.4.4",
     "npm:marked@^17.0.3": "17.0.3"
   },
   "jsr": {
@@ -40,6 +41,9 @@
     }
   },
   "npm": {
+    "gl-matrix@3.4.4": {
+      "integrity": "sha512-latSnyDNt/8zYUB6VIJ6PCh2jBjJX6gnDsoCZ7LyW7GkqrD51EWwa9qCoGixj8YqBtETQK/xY7OmpTF8xz1DdQ=="
+    },
     "marked@17.0.3": {
       "integrity": "sha512-jt1v2ObpyOKR8p4XaUJVk3YWRJ5n+i4+rjQopxvV32rSndTJXvIzuUdWWIy/1pFQMkQmvTXawzDNqOH/CUmx6A==",
       "bin": true
@@ -50,6 +54,7 @@
       "jsr:@gfx/canvas-wasm@~0.4.2",
       "jsr:@paulaboks/rng@^0.0.2",
       "jsr:@std/fs@^1.0.23",
+      "npm:gl-matrix@^3.4.4",
       "npm:marked@^17.0.3"
     ]
   }