diff --git a/client/build.sh b/client/build.sh
index d0b5e75..f614120 100755
--- a/client/build.sh
+++ b/client/build.sh
@@ -6,4 +6,10 @@ cat dest/block.js >> dest/script.js
 cat dest/network.js >> dest/script.js
 cat dest/player.js >> dest/script.js
 cat dest/core.js >> dest/script.js
-terser dest/script.js -o dest/script.min.js --compress --mangle
\ No newline at end of file
+terser dest/script.js -o dest/script.min.js --compress --mangle
+rm dest/script.js
+rm dest/main.js
+rm dest/block.js
+rm dest/network.js
+rm dest/player.js
+rm dest/core.js
\ No newline at end of file
diff --git a/client/dest/block.js b/client/dest/block.js
deleted file mode 100644
index 3156695..0000000
--- a/client/dest/block.js
+++ /dev/null
@@ -1,112 +0,0 @@
-class Block {
-    constructor(x, y, color, collides, type) {
-        this.x = x;
-        this.y = y;
-        this.color = color;
-        this.collides = collides;
-        this.type = type;
-    }
-    render() {
-        let rect = this.translate_to_camera();
-        if (this.is_need_render(rect)) {
-            ctx.fillStyle = this.color;
-            ctx.fillRect(...rect);
-        }
-    }
-    is_need_render(rect) {
-        return rect[0] + rect[2] > 0 || rect[1] + rect[3] > 0 || rect[0] < width || rect[1] < height;
-    }
-    translate_to_camera() {
-        let size = camera.size * 16;
-        return [
-            this.x * size - size / 2 + (width / 2 - camera.x * size),
-            height - (this.y + 1) * size + size / 2 - (height / 2 - camera.y * size),
-            size,
-            size
-        ];
-    }
-    tick() {
-    }
-    renderTick() {
-    }
-    on_collide(player, x, y) {
-        if (x != 0)
-            player.velocity_x = this.x + x - player.x;
-        if (y != 0)
-            player.velocity_y = this.y + y - player.y;
-    }
-    renderText() {
-    }
-}
-class Player extends Block {
-    constructor(x, y, name, color, velocity_x, velocity_y) {
-        super(x, y, color, true, null);
-        this.velocity_x = velocity_x;
-        this.velocity_y = velocity_y;
-        this.name = name;
-    }
-    reset() {
-        this.on_ground = false;
-    }
-    on_collide(player, x, y) {
-        super.on_collide(player, x, y);
-    }
-    tick(collide = true) {
-        this.x = Math.round(this.x * 100) / 100;
-        this.y = Math.round(this.y * 100) / 100;
-        this.velocity_x = Math.round(this.velocity_x * 100) / 100;
-        this.velocity_y = Math.round(this.velocity_y * 100) / 100;
-        if (collide)
-            this.collide();
-    }
-    collide() {
-        this.on_ground = false;
-        for (const block of blocks) {
-            if (!block.collides)
-                continue;
-            let collide_x = 0;
-            let collide_y = 0;
-            if (this.x > block.x - 1 && this.x < block.x + 1) {
-                if (this.y > block.y && this.y + this.velocity_y - 1 < block.y) {
-                    this.on_ground = true;
-                    collide_y = 1;
-                }
-                if (this.y < block.y && this.y + this.velocity_y > block.y - 1)
-                    collide_y = -1;
-            }
-            if (this.y > block.y - 1 && this.y < block.y + 1) {
-                if (this.x > block.x && this.x + this.velocity_x - 1 < block.x)
-                    collide_x = 1;
-                if (this.x < block.x && this.x + this.velocity_x > block.x - 1)
-                    collide_x = -1;
-            }
-            block.on_collide(this, collide_x, collide_y);
-        }
-    }
-    renderTick() {
-        this.velocity_x *= 0.5;
-        this.velocity_y *= 0.5;
-        this.x += this.velocity_x;
-        this.y += this.velocity_y;
-    }
-    renderText() {
-        super.renderText();
-        let rect = this.translate_to_camera();
-        if (this.is_need_render(rect)) {
-            ctx.fillStyle = "#ddd";
-            ctx.font = "15px monospace";
-            let width = ctx.measureText(this.name).width;
-            ctx.fillText(this.name, rect[0] + rect[2] / 2 - width / 2, rect[1] - 5);
-        }
-    }
-    teleport(x, y) {
-        this.velocity_x = x - this.x;
-        this.velocity_y = y - this.y;
-    }
-    forceTeleport(x, y) {
-        this.x = x;
-        this.y = y;
-        this.velocity_x = 0;
-        this.velocity_y = 0;
-    }
-}
diff --git a/client/dest/core.js b/client/dest/core.js
deleted file mode 100644
index 7ba3ef0..0000000
--- a/client/dest/core.js
+++ /dev/null
@@ -1,90 +0,0 @@
-var ticksAlive = 0;
-var debugMode = false;
-var camera = {
-    x: 0.0,
-    y: 0.0,
-    size: 1.5
-};
-var chatOpened = false;
-var chatMessages = [];
-var chatTyping = "";
-var player = new MainPlayer();
-player.register();
-var blocks = [];
-const allowed_key_to_send = [
-    "KeyR", "KeyW", "KeyE", "KeyQ", "KeyS",
-    "Numpad1", "Numpad2", "Numpad3", "Numpad4", "Numpad5",
-    "Numpad6", "Numpad7", "Numpad8", "Numpad9", "Numpad0",
-    "ShiftLeft", "ControlLeft", "Enter",
-    "F1", "F2", "KeyZ", "KeyX", "KeyC"
-];
-function connectServer(address, name) {
-    player.closeConnection();
-    player.onConnect(name);
-    try {
-        let conn = new Connection(address, player.onPacket, (e) => {
-            player.conn = null;
-            setServerError(e == null ? "Connection closed due to error" : e);
-            resetWorld();
-        });
-        conn.send(new JoinPacket(name));
-    }
-    catch (exception) {
-        setServerError(exception);
-    }
-}
-function resetWorld() {
-    player.onConnect("unnamed player");
-    blocks = [];
-    blocks.push(new Block(-1, -1, "#555", true, "normal"));
-    blocks.push(new Block(0, -1, "#a67", true, "spawn"));
-    blocks.push(new Block(1, -1, "#555", true, "normal"));
-}
-function getBlock(x, y) {
-    let value = blocks.find(o => !(o instanceof Player) && o.x == x && o.y == y);
-    if (typeof value === "undefined") {
-        return null;
-    }
-    else {
-        return value;
-    }
-}
-function placeBlock(block) {
-    blocks.push(block);
-}
-function removeBlock(x, y) {
-    blocks = blocks.filter(o => o instanceof Player || o.x != x || o.y != y);
-}
-function getPlayer(name) {
-    let value = blocks.find(o => o instanceof Player && o.name == name);
-    if (typeof value === "undefined") {
-        return null;
-    }
-    else {
-        return value;
-    }
-}
-function removePlayer(name) {
-    blocks = blocks.filter(o => !(o instanceof Player) || o.name != name);
-}
-function render() {
-    ctx.fillStyle = "#333";
-    ctx.fillRect(0, 0, width, height);
-    for (const block of blocks)
-        block.render();
-    for (const block of blocks)
-        block.renderText();
-    player.render();
-    player.renderText();
-}
-function tick() {
-    for (const block of blocks)
-        block.tick();
-    player.tick();
-}
-function renderTick() {
-    for (const block of blocks)
-        block.renderTick();
-    player.renderTick();
-}
-resetWorld();
diff --git a/client/dest/main.js b/client/dest/main.js
deleted file mode 100644
index 7108b87..0000000
--- a/client/dest/main.js
+++ /dev/null
@@ -1,53 +0,0 @@
-const canvas = document.getElementById("game");
-const ctx = canvas.getContext("2d");
-const width = 640;
-const height = 480;
-const server_ip = document.getElementById("server-ip");
-const server_nick = document.getElementById("server-nick");
-const connect_server = document.getElementById("connect-server");
-const server_error = document.getElementById("server-error");
-function wrapText(ctx, text, maxWidth) {
-    const lines = [];
-    let currentLine = '';
-    for (let i = 0; i < text.length; i++) {
-        const char = text[i];
-        const testLine = currentLine + char;
-        const testWidth = ctx.measureText(testLine).width;
-        if (testWidth > maxWidth && currentLine) {
-            lines.push(currentLine);
-            currentLine = char;
-        }
-        else {
-            currentLine = testLine;
-        }
-    }
-    if (currentLine) {
-        lines.push(currentLine);
-    }
-    return lines;
-}
-function lerp(a, b, alpha) {
-    return a + alpha * (b - a);
-}
-function setServerError(text) {
-    server_error.innerText = text;
-}
-connect_server.onclick = () => {
-    let ip = server_ip.value;
-    let nick = server_nick.value;
-    setServerError("");
-    if (ip.length == 0)
-        return setServerError("введите айпи пж");
-    if (nick.length == 0)
-        return setServerError("введите ник пж");
-    if (!ip.includes(":"))
-        ip += ":8000";
-    connectServer(ip, nick);
-};
-setInterval(tick, 1000 / 20);
-setInterval(renderTick, 1000 / 60);
-let renderTimer = () => {
-    render();
-    requestAnimationFrame(renderTimer);
-};
-requestAnimationFrame(renderTimer);
diff --git a/client/dest/network.js b/client/dest/network.js
deleted file mode 100644
index 85521bf..0000000
--- a/client/dest/network.js
+++ /dev/null
@@ -1,71 +0,0 @@
-class Packet {
-    constructor(id, data) {
-        this.id = id;
-        this.data = data;
-    }
-    getId() { return this.id; }
-    getData() { return this.data; }
-    static fromString(data) {
-        return new Packet(data[0], data.slice(1).split("\n"));
-    }
-}
-class JoinPacket extends Packet {
-    constructor(name) {
-        super("J", [name]);
-    }
-}
-class MessagePacket extends Packet {
-    constructor(message) {
-        super("M", [message]);
-    }
-}
-class KeyPacket extends Packet {
-    constructor(key, pressed) {
-        super("K", [key, pressed ? "1" : "0"]);
-    }
-}
-class PlaceBlockPacket extends Packet {
-    constructor(x, y, type) {
-        super("P", [x.toString(), y.toString(), type]);
-    }
-}
-class DestroyBlockPacket extends Packet {
-    constructor(x, y) {
-        super("D", [x.toString(), y.toString()]);
-    }
-}
-class PositionPacket extends Packet {
-    constructor(x, y) {
-        super("X", [x.toString(), y.toString()]);
-    }
-}
-class VelocityPacket extends Packet {
-    constructor(x, y) {
-        super("V", [x.toString(), y.toString()]);
-    }
-}
-class Connection {
-    constructor(address, on_packet, on_close) {
-        this.socket = new WebSocket("ws://" + address, "cubic");
-        this.on_packet = on_packet;
-        this.on_close = on_close;
-        this.socket.onmessage = this._on_message;
-        this.socket.onclose = this._on_close;
-        this.socket.onerror = this._on_error;
-    }
-    _on_message(event) {
-        this.on_packet(Packet.fromString(event.data));
-    }
-    _on_close(event) {
-        this.on_close(null);
-    }
-    _on_error(event) {
-        this.on_close(event.toString());
-    }
-    close() {
-        this.socket.close();
-    }
-    send(packet) {
-        this.socket.send(packet.getId() + packet.getData());
-    }
-}
diff --git a/client/dest/player.js b/client/dest/player.js
deleted file mode 100644
index d34f0e8..0000000
--- a/client/dest/player.js
+++ /dev/null
@@ -1,347 +0,0 @@
-class MainPlayer extends Player {
-    constructor() {
-        super(0.0, 0.0, "unnamed player", "#5e6", 0, 0);
-        this.reset();
-        this.conn = null;
-    }
-    reset() {
-        super.reset();
-        this.walk_speed = 1;
-        this.jump_speed = 2;
-        this.gravity_speed = 0.5;
-        this.controls_x = 0;
-        this.controls_jump = false;
-        this.block_type = null;
-        this.all_block_types = [
-            "normal", "normal", "normal", "normal", "normal",
-            "normal", "normal", "normal", "normal", "normal"
-        ];
-    }
-    onConnect(name) {
-        this.x = 0.0;
-        this.y = 0.0;
-        this.velocity_x = 0.0;
-        this.velocity_y = 0.0;
-        camera.x = 0.0;
-        camera.y = 0.0;
-        chatOpened = false;
-        chatMessages = [];
-        this.name = name;
-        this.color = "#5e6";
-        blocks = [];
-        this.reset();
-    }
-    register() {
-        document.addEventListener("keydown", (e) => {
-            let key = e.code;
-            if (chatOpened) {
-                if (key == "Backspace") {
-                    chatTyping = chatTyping.slice(0, chatTyping.length - 1);
-                }
-                else if (key == "Enter") {
-                    if (chatTyping == "") {
-                        chatOpened = false;
-                        return;
-                    }
-                    this.sendPacket(new MessagePacket(chatTyping));
-                    chatTyping = "";
-                    chatOpened = false;
-                }
-                else if (key == "Escape") {
-                    chatOpened = false;
-                }
-                else if (e.key.length == 1) {
-                    chatTyping += e.key;
-                    e.preventDefault();
-                    return false;
-                }
-            }
-            else {
-                if (key == "KeyD") {
-                    this.controls_x = 1;
-                }
-                else if (key == "KeyA") {
-                    this.controls_x = -1;
-                }
-                else if (key == "Space") {
-                    this.controls_jump = true;
-                    e.preventDefault();
-                    return false;
-                }
-                else if (key == "KeyR") {
-                    if (this.conn == null) {
-                        this.forceTeleport(0, 1);
-                    }
-                }
-                else if (key == "KeyT") {
-                    chatOpened = true;
-                }
-                if (e.key == "0")
-                    this.block_type = null;
-                if ("123456789".includes(e.key))
-                    this.block_type = this.all_block_types[parseInt(e.key) - 1];
-                if (allowed_key_to_send.includes(key)) {
-                    this.sendPacket(new KeyPacket(key, true));
-                }
-                if (key == "Escape") {
-                    this.closeConnection();
-                }
-            }
-            if (key == "F3") {
-                debugMode = !debugMode;
-                e.preventDefault();
-                return false;
-            }
-        });
-        document.addEventListener("keyup", (e) => {
-            let key = e.code;
-            if ((key == "KeyD" && this.controls_x == 1)
-                || (key == "KeyA" && this.controls_x == -1)) {
-                this.controls_x = 0;
-            }
-            else if (key == "Space" && this.controls_jump) {
-                this.controls_jump = false;
-            }
-            if (allowed_key_to_send.includes(key)) {
-                this.sendPacket(new KeyPacket(key, false));
-            }
-        });
-        canvas.addEventListener("wheel", e => {
-            if (e.deltaY > 0) {
-                camera.size *= 0.5 * (e.deltaY / 114);
-            }
-            else {
-                camera.size *= 2 * (e.deltaY / -114);
-            }
-            e.preventDefault();
-            return false;
-        });
-        canvas.addEventListener("mousedown", e => {
-            let rect = canvas.getBoundingClientRect();
-            let size = 16 * camera.size;
-            let x = Math.round((e.clientX - rect.x) / size - (width / size / 2) + camera.x);
-            let y = Math.round((height - (e.clientY - rect.y)) / size - (height / size / 2) + camera.y);
-            if (e.buttons == 2 && this.block_type != null) {
-                if (this.conn == null) {
-                    placeBlock(new Block(x, y, "#555", true, this.block_type));
-                }
-                this.sendPacket(new PlaceBlockPacket(x, y, this.block_type));
-            }
-            else if (e.buttons == 1) {
-                if (this.conn == null) {
-                    removeBlock(x, y);
-                }
-                this.sendPacket(new DestroyBlockPacket(x, y));
-            }
-        });
-    }
-    sendPacket(packet) {
-        if (this.conn != null) {
-            this.conn.send(packet);
-        }
-    }
-    closeConnection() {
-        if (this.conn != null)
-            this.conn.close();
-        this.conn = null;
-    }
-    onPacket(packet) {
-        let packet_id = packet.getId();
-        let packet_data = packet.getData();
-        if (packet_id == "K") {
-            setServerError(packet_data[0]);
-            this.closeConnection();
-        }
-        if (packet_id == "N") {
-            this.name = packet_data[0];
-        }
-        if (packet_id == "C") {
-            this.color = packet_data[0];
-        }
-        if (packet_id == "M") {
-            chatMessages.unshift(...packet_data);
-        }
-        if (packet_id == "R") {
-            this.velocity_x = parseFloat(packet_data[0]) - this.x + parseFloat(packet_data[2]);
-            this.velocity_y = parseFloat(packet_data[1]) - this.y + parseFloat(packet_data[3]);
-        }
-        if (packet_id == "P") {
-            let x = parseFloat(packet_data[0]);
-            let y = parseFloat(packet_data[1]);
-            this.x = x;
-            this.y = y;
-        }
-        if (packet_id == "V") {
-            let x = parseFloat(packet_data[0]);
-            let y = parseFloat(packet_data[1]);
-            this.velocity_x = x;
-            this.velocity_y = y;
-        }
-        if (packet_id == "S") {
-            let speed_type = packet_data[0];
-            let speed = parseFloat(packet_data[1]);
-            if (speed_type == "W") {
-                this.walk_speed = speed;
-            }
-            else if (speed_type == "J") {
-                this.jump_speed = speed;
-            }
-            else if (speed_type == "G") {
-                this.gravity_speed = speed;
-            }
-        }
-        if (packet_id == "W") {
-            for (const data of packet_data) {
-                let type = data[0];
-                let create = data[1] == "1";
-                let params = data.slice(2).split(",");
-                if (type == "B") {
-                    let x = parseFloat(params[0]);
-                    let y = parseFloat(params[1]);
-                    if (create) {
-                        let collides = params[2] == "1";
-                        let type = params[3];
-                        let color = params[4];
-                        let block = getBlock(x, y);
-                        if (block != null) {
-                            block.x = x;
-                            block.y = y;
-                            block.color = color;
-                            block.collides = collides;
-                            block.type = type;
-                        }
-                        else {
-                            placeBlock(new Block(x, y, color, collides, type));
-                        }
-                    }
-                    else {
-                        removeBlock(x, y);
-                    }
-                }
-                else if (type == "P") {
-                    let name = params[0];
-                    if (create) {
-                        let x = parseFloat(params[1]);
-                        let y = parseFloat(params[2]);
-                        let vel_x = parseFloat(params[3]);
-                        let vel_y = parseFloat(params[4]);
-                        let color = params[5];
-                        let player = getPlayer(name);
-                        if (player != null) {
-                            player.x = x;
-                            player.y = y;
-                            player.color = color;
-                            player.velocity_x = vel_x;
-                            player.velocity_y = vel_y;
-                        }
-                        else {
-                            placeBlock(new Player(x, y, name, color, vel_x, vel_y));
-                        }
-                    }
-                    else {
-                        removePlayer(name);
-                    }
-                }
-            }
-        }
-        if (packet_id == "B") {
-            this.all_block_types = packet_data.slice(0, 9);
-            this.block_type = null;
-        }
-    }
-    tick() {
-        super.tick(false);
-        let vel_x = this.velocity_x;
-        let vel_y = this.velocity_y;
-        this.velocity_x += this.controls_x * this.walk_speed;
-        if (this.controls_jump && this.on_ground) {
-            this.velocity_y += this.jump_speed;
-            this.on_ground = false;
-        }
-        else {
-            this.velocity_y -= this.gravity_speed;
-        }
-        this.collide();
-        ticksAlive++;
-        this.sendPacket(new VelocityPacket(this.velocity_x - vel_x, this.velocity_y - vel_y));
-        this.sendPacket(new PositionPacket(this.x, this.y));
-    }
-    render() {
-        super.render();
-        camera.x = Math.round(lerp(camera.x, this.x, 0.075) * 1000) / 1000;
-        camera.y = Math.round(lerp(camera.y, this.y, 0.075) * 1000) / 1000;
-    }
-    renderText() {
-        super.renderText();
-        if (this.block_type != null) {
-            ctx.fillStyle = "#76d";
-            ctx.font = "15px monospace";
-            ctx.fillText("selected: " + this.block_type, 0, 15);
-        }
-        if (debugMode) {
-            ctx.fillStyle = "#de7";
-            ctx.font = "20px monospace";
-            ctx.fillText("x: " + this.x, 0, 20);
-            ctx.fillText("y: " + this.y, 0, 40);
-            ctx.fillText("velocity_x: " + this.velocity_x, 0, 60);
-            ctx.fillText("velocity_y: " + this.velocity_y, 0, 80);
-            ctx.fillText("camera.x: " + camera.x, 0, 100);
-            ctx.fillText("camera.y: " + camera.y, 0, 120);
-        }
-        if (!chatOpened) {
-            ctx.fillStyle = "#22222288";
-            ctx.fillRect(5, height - 35, width * 0.4, 30);
-            ctx.fillStyle = "#aaaaaa88";
-            ctx.font = "15px monospace";
-            ctx.fillText("Нажмите T для чата", 15, height - 15);
-        }
-        else {
-            ctx.fillStyle = "#22222288";
-            ctx.fillRect(5, height - 35, width - 10, 30);
-            ctx.save();
-            ctx.beginPath();
-            ctx.moveTo(5, height - 35);
-            ctx.lineTo(width - 5, height - 35);
-            ctx.lineTo(width - 5, height - 5);
-            ctx.lineTo(5, height - 5);
-            ctx.lineTo(5, height - 35);
-            ctx.closePath();
-            ctx.clip();
-            ctx.font = "15px monospace";
-            if (chatTyping.length == 0) {
-                ctx.fillStyle = "#aaaaaa88";
-                ctx.fillText("Напишите сообщение...", 15, height - 15);
-            }
-            else {
-                ctx.fillStyle = "#ffffff";
-                let text_width = ctx.measureText(chatTyping).width;
-                ctx.fillText(chatTyping, Math.min(10, width - text_width - 10), height - 15);
-            }
-            ctx.restore();
-        }
-        if (chatMessages.length > 0) {
-            let draw_message = (message) => {
-                let lines = wrapText(ctx, message, message_width - 20);
-                let height = lines.length * 20 + 5 + 5;
-                let top = message_bottom - height;
-                ctx.fillStyle = "#22222288";
-                ctx.fillRect(5, top, message_width, height);
-                let y = 5;
-                for (let line of lines) {
-                    ctx.fillStyle = "#ffffff";
-                    ctx.fillText(line, 15, top + y + 15);
-                    y += 5 + 20;
-                }
-                message_bottom -= height + 5;
-            };
-            let message_width = width * 0.4;
-            let message_bottom = height - 35 - 5;
-            if (chatOpened) {
-                chatMessages.forEach(draw_message);
-            }
-            else {
-                draw_message(chatMessages[0]);
-            }
-        }
-    }
-}
diff --git a/client/dest/script.js b/client/dest/script.js
deleted file mode 100644
index e4e3d25..0000000
--- a/client/dest/script.js
+++ /dev/null
@@ -1,673 +0,0 @@
-const canvas = document.getElementById("game");
-const ctx = canvas.getContext("2d");
-const width = 640;
-const height = 480;
-const server_ip = document.getElementById("server-ip");
-const server_nick = document.getElementById("server-nick");
-const connect_server = document.getElementById("connect-server");
-const server_error = document.getElementById("server-error");
-function wrapText(ctx, text, maxWidth) {
-    const lines = [];
-    let currentLine = '';
-    for (let i = 0; i < text.length; i++) {
-        const char = text[i];
-        const testLine = currentLine + char;
-        const testWidth = ctx.measureText(testLine).width;
-        if (testWidth > maxWidth && currentLine) {
-            lines.push(currentLine);
-            currentLine = char;
-        }
-        else {
-            currentLine = testLine;
-        }
-    }
-    if (currentLine) {
-        lines.push(currentLine);
-    }
-    return lines;
-}
-function lerp(a, b, alpha) {
-    return a + alpha * (b - a);
-}
-function setServerError(text) {
-    server_error.innerText = text;
-}
-connect_server.onclick = () => {
-    let ip = server_ip.value;
-    let nick = server_nick.value;
-    setServerError("");
-    if (ip.length == 0)
-        return setServerError("введите айпи пж");
-    if (nick.length == 0)
-        return setServerError("введите ник пж");
-    if (!ip.includes(":"))
-        ip += ":8000";
-    connectServer(ip, nick);
-};
-setInterval(tick, 1000 / 20);
-setInterval(renderTick, 1000 / 60);
-let renderTimer = () => {
-    render();
-    requestAnimationFrame(renderTimer);
-};
-requestAnimationFrame(renderTimer);
-class Block {
-    constructor(x, y, color, collides, type) {
-        this.x = x;
-        this.y = y;
-        this.color = color;
-        this.collides = collides;
-        this.type = type;
-    }
-    render() {
-        let rect = this.translate_to_camera();
-        if (this.is_need_render(rect)) {
-            ctx.fillStyle = this.color;
-            ctx.fillRect(...rect);
-        }
-    }
-    is_need_render(rect) {
-        return rect[0] + rect[2] > 0 || rect[1] + rect[3] > 0 || rect[0] < width || rect[1] < height;
-    }
-    translate_to_camera() {
-        let size = camera.size * 16;
-        return [
-            this.x * size - size / 2 + (width / 2 - camera.x * size),
-            height - (this.y + 1) * size + size / 2 - (height / 2 - camera.y * size),
-            size,
-            size
-        ];
-    }
-    tick() {
-    }
-    renderTick() {
-    }
-    on_collide(player, x, y) {
-        if (x != 0)
-            player.velocity_x = this.x + x - player.x;
-        if (y != 0)
-            player.velocity_y = this.y + y - player.y;
-    }
-    renderText() {
-    }
-}
-class Player extends Block {
-    constructor(x, y, name, color, velocity_x, velocity_y) {
-        super(x, y, color, true, null);
-        this.velocity_x = velocity_x;
-        this.velocity_y = velocity_y;
-        this.name = name;
-    }
-    reset() {
-        this.on_ground = false;
-    }
-    on_collide(player, x, y) {
-        super.on_collide(player, x, y);
-    }
-    tick(collide = true) {
-        this.x = Math.round(this.x * 100) / 100;
-        this.y = Math.round(this.y * 100) / 100;
-        this.velocity_x = Math.round(this.velocity_x * 100) / 100;
-        this.velocity_y = Math.round(this.velocity_y * 100) / 100;
-        if (collide)
-            this.collide();
-    }
-    collide() {
-        this.on_ground = false;
-        for (const block of blocks) {
-            if (!block.collides)
-                continue;
-            let collide_x = 0;
-            let collide_y = 0;
-            if (this.x > block.x - 1 && this.x < block.x + 1) {
-                if (this.y > block.y && this.y + this.velocity_y - 1 < block.y) {
-                    this.on_ground = true;
-                    collide_y = 1;
-                }
-                if (this.y < block.y && this.y + this.velocity_y > block.y - 1)
-                    collide_y = -1;
-            }
-            if (this.y > block.y - 1 && this.y < block.y + 1) {
-                if (this.x > block.x && this.x + this.velocity_x - 1 < block.x)
-                    collide_x = 1;
-                if (this.x < block.x && this.x + this.velocity_x > block.x - 1)
-                    collide_x = -1;
-            }
-            block.on_collide(this, collide_x, collide_y);
-        }
-    }
-    renderTick() {
-        this.velocity_x *= 0.5;
-        this.velocity_y *= 0.5;
-        this.x += this.velocity_x;
-        this.y += this.velocity_y;
-    }
-    renderText() {
-        super.renderText();
-        let rect = this.translate_to_camera();
-        if (this.is_need_render(rect)) {
-            ctx.fillStyle = "#ddd";
-            ctx.font = "15px monospace";
-            let width = ctx.measureText(this.name).width;
-            ctx.fillText(this.name, rect[0] + rect[2] / 2 - width / 2, rect[1] - 5);
-        }
-    }
-    teleport(x, y) {
-        this.velocity_x = x - this.x;
-        this.velocity_y = y - this.y;
-    }
-    forceTeleport(x, y) {
-        this.x = x;
-        this.y = y;
-        this.velocity_x = 0;
-        this.velocity_y = 0;
-    }
-}
-class Packet {
-    constructor(id, data) {
-        this.id = id;
-        this.data = data;
-    }
-    getId() { return this.id; }
-    getData() { return this.data; }
-    static fromString(data) {
-        return new Packet(data[0], data.slice(1).split("\n"));
-    }
-}
-class JoinPacket extends Packet {
-    constructor(name) {
-        super("J", [name]);
-    }
-}
-class MessagePacket extends Packet {
-    constructor(message) {
-        super("M", [message]);
-    }
-}
-class KeyPacket extends Packet {
-    constructor(key, pressed) {
-        super("K", [key, pressed ? "1" : "0"]);
-    }
-}
-class PlaceBlockPacket extends Packet {
-    constructor(x, y, type) {
-        super("P", [x.toString(), y.toString(), type]);
-    }
-}
-class DestroyBlockPacket extends Packet {
-    constructor(x, y) {
-        super("D", [x.toString(), y.toString()]);
-    }
-}
-class PositionPacket extends Packet {
-    constructor(x, y) {
-        super("X", [x.toString(), y.toString()]);
-    }
-}
-class VelocityPacket extends Packet {
-    constructor(x, y) {
-        super("V", [x.toString(), y.toString()]);
-    }
-}
-class Connection {
-    constructor(address, on_packet, on_close) {
-        this.socket = new WebSocket("ws://" + address, "cubic");
-        this.on_packet = on_packet;
-        this.on_close = on_close;
-        this.socket.onmessage = this._on_message;
-        this.socket.onclose = this._on_close;
-        this.socket.onerror = this._on_error;
-    }
-    _on_message(event) {
-        this.on_packet(Packet.fromString(event.data));
-    }
-    _on_close(event) {
-        this.on_close(null);
-    }
-    _on_error(event) {
-        this.on_close(event.toString());
-    }
-    close() {
-        this.socket.close();
-    }
-    send(packet) {
-        this.socket.send(packet.getId() + packet.getData());
-    }
-}
-class MainPlayer extends Player {
-    constructor() {
-        super(0.0, 0.0, "unnamed player", "#5e6", 0, 0);
-        this.reset();
-        this.conn = null;
-    }
-    reset() {
-        super.reset();
-        this.walk_speed = 1;
-        this.jump_speed = 2;
-        this.gravity_speed = 0.5;
-        this.controls_x = 0;
-        this.controls_jump = false;
-        this.block_type = null;
-        this.all_block_types = [
-            "normal", "normal", "normal", "normal", "normal",
-            "normal", "normal", "normal", "normal", "normal"
-        ];
-    }
-    onConnect(name) {
-        this.x = 0.0;
-        this.y = 0.0;
-        this.velocity_x = 0.0;
-        this.velocity_y = 0.0;
-        camera.x = 0.0;
-        camera.y = 0.0;
-        chatOpened = false;
-        chatMessages = [];
-        this.name = name;
-        this.color = "#5e6";
-        blocks = [];
-        this.reset();
-    }
-    register() {
-        document.addEventListener("keydown", (e) => {
-            let key = e.code;
-            if (chatOpened) {
-                if (key == "Backspace") {
-                    chatTyping = chatTyping.slice(0, chatTyping.length - 1);
-                }
-                else if (key == "Enter") {
-                    if (chatTyping == "") {
-                        chatOpened = false;
-                        return;
-                    }
-                    this.sendPacket(new MessagePacket(chatTyping));
-                    chatTyping = "";
-                    chatOpened = false;
-                }
-                else if (key == "Escape") {
-                    chatOpened = false;
-                }
-                else if (e.key.length == 1) {
-                    chatTyping += e.key;
-                    e.preventDefault();
-                    return false;
-                }
-            }
-            else {
-                if (key == "KeyD") {
-                    this.controls_x = 1;
-                }
-                else if (key == "KeyA") {
-                    this.controls_x = -1;
-                }
-                else if (key == "Space") {
-                    this.controls_jump = true;
-                    e.preventDefault();
-                    return false;
-                }
-                else if (key == "KeyR") {
-                    if (this.conn == null) {
-                        this.forceTeleport(0, 1);
-                    }
-                }
-                else if (key == "KeyT") {
-                    chatOpened = true;
-                }
-                if (e.key == "0")
-                    this.block_type = null;
-                if ("123456789".includes(e.key))
-                    this.block_type = this.all_block_types[parseInt(e.key) - 1];
-                if (allowed_key_to_send.includes(key)) {
-                    this.sendPacket(new KeyPacket(key, true));
-                }
-                if (key == "Escape") {
-                    this.closeConnection();
-                }
-            }
-            if (key == "F3") {
-                debugMode = !debugMode;
-                e.preventDefault();
-                return false;
-            }
-        });
-        document.addEventListener("keyup", (e) => {
-            let key = e.code;
-            if ((key == "KeyD" && this.controls_x == 1)
-                || (key == "KeyA" && this.controls_x == -1)) {
-                this.controls_x = 0;
-            }
-            else if (key == "Space" && this.controls_jump) {
-                this.controls_jump = false;
-            }
-            if (allowed_key_to_send.includes(key)) {
-                this.sendPacket(new KeyPacket(key, false));
-            }
-        });
-        canvas.addEventListener("wheel", e => {
-            if (e.deltaY > 0) {
-                camera.size *= 0.5 * (e.deltaY / 114);
-            }
-            else {
-                camera.size *= 2 * (e.deltaY / -114);
-            }
-            e.preventDefault();
-            return false;
-        });
-        canvas.addEventListener("mousedown", e => {
-            let rect = canvas.getBoundingClientRect();
-            let size = 16 * camera.size;
-            let x = Math.round((e.clientX - rect.x) / size - (width / size / 2) + camera.x);
-            let y = Math.round((height - (e.clientY - rect.y)) / size - (height / size / 2) + camera.y);
-            if (e.buttons == 2 && this.block_type != null) {
-                if (this.conn == null) {
-                    placeBlock(new Block(x, y, "#555", true, this.block_type));
-                }
-                this.sendPacket(new PlaceBlockPacket(x, y, this.block_type));
-            }
-            else if (e.buttons == 1) {
-                if (this.conn == null) {
-                    removeBlock(x, y);
-                }
-                this.sendPacket(new DestroyBlockPacket(x, y));
-            }
-        });
-    }
-    sendPacket(packet) {
-        if (this.conn != null) {
-            this.conn.send(packet);
-        }
-    }
-    closeConnection() {
-        if (this.conn != null)
-            this.conn.close();
-        this.conn = null;
-    }
-    onPacket(packet) {
-        let packet_id = packet.getId();
-        let packet_data = packet.getData();
-        if (packet_id == "K") {
-            setServerError(packet_data[0]);
-            this.closeConnection();
-        }
-        if (packet_id == "N") {
-            this.name = packet_data[0];
-        }
-        if (packet_id == "C") {
-            this.color = packet_data[0];
-        }
-        if (packet_id == "M") {
-            chatMessages.unshift(...packet_data);
-        }
-        if (packet_id == "R") {
-            this.velocity_x = parseFloat(packet_data[0]) - this.x + parseFloat(packet_data[2]);
-            this.velocity_y = parseFloat(packet_data[1]) - this.y + parseFloat(packet_data[3]);
-        }
-        if (packet_id == "P") {
-            let x = parseFloat(packet_data[0]);
-            let y = parseFloat(packet_data[1]);
-            this.x = x;
-            this.y = y;
-        }
-        if (packet_id == "V") {
-            let x = parseFloat(packet_data[0]);
-            let y = parseFloat(packet_data[1]);
-            this.velocity_x = x;
-            this.velocity_y = y;
-        }
-        if (packet_id == "S") {
-            let speed_type = packet_data[0];
-            let speed = parseFloat(packet_data[1]);
-            if (speed_type == "W") {
-                this.walk_speed = speed;
-            }
-            else if (speed_type == "J") {
-                this.jump_speed = speed;
-            }
-            else if (speed_type == "G") {
-                this.gravity_speed = speed;
-            }
-        }
-        if (packet_id == "W") {
-            for (const data of packet_data) {
-                let type = data[0];
-                let create = data[1] == "1";
-                let params = data.slice(2).split(",");
-                if (type == "B") {
-                    let x = parseFloat(params[0]);
-                    let y = parseFloat(params[1]);
-                    if (create) {
-                        let collides = params[2] == "1";
-                        let type = params[3];
-                        let color = params[4];
-                        let block = getBlock(x, y);
-                        if (block != null) {
-                            block.x = x;
-                            block.y = y;
-                            block.color = color;
-                            block.collides = collides;
-                            block.type = type;
-                        }
-                        else {
-                            placeBlock(new Block(x, y, color, collides, type));
-                        }
-                    }
-                    else {
-                        removeBlock(x, y);
-                    }
-                }
-                else if (type == "P") {
-                    let name = params[0];
-                    if (create) {
-                        let x = parseFloat(params[1]);
-                        let y = parseFloat(params[2]);
-                        let vel_x = parseFloat(params[3]);
-                        let vel_y = parseFloat(params[4]);
-                        let color = params[5];
-                        let player = getPlayer(name);
-                        if (player != null) {
-                            player.x = x;
-                            player.y = y;
-                            player.color = color;
-                            player.velocity_x = vel_x;
-                            player.velocity_y = vel_y;
-                        }
-                        else {
-                            placeBlock(new Player(x, y, name, color, vel_x, vel_y));
-                        }
-                    }
-                    else {
-                        removePlayer(name);
-                    }
-                }
-            }
-        }
-        if (packet_id == "B") {
-            this.all_block_types = packet_data.slice(0, 9);
-            this.block_type = null;
-        }
-    }
-    tick() {
-        super.tick(false);
-        let vel_x = this.velocity_x;
-        let vel_y = this.velocity_y;
-        this.velocity_x += this.controls_x * this.walk_speed;
-        if (this.controls_jump && this.on_ground) {
-            this.velocity_y += this.jump_speed;
-            this.on_ground = false;
-        }
-        else {
-            this.velocity_y -= this.gravity_speed;
-        }
-        this.collide();
-        ticksAlive++;
-        this.sendPacket(new VelocityPacket(this.velocity_x - vel_x, this.velocity_y - vel_y));
-        this.sendPacket(new PositionPacket(this.x, this.y));
-    }
-    render() {
-        super.render();
-        camera.x = Math.round(lerp(camera.x, this.x, 0.075) * 1000) / 1000;
-        camera.y = Math.round(lerp(camera.y, this.y, 0.075) * 1000) / 1000;
-    }
-    renderText() {
-        super.renderText();
-        if (this.block_type != null) {
-            ctx.fillStyle = "#76d";
-            ctx.font = "15px monospace";
-            ctx.fillText("selected: " + this.block_type, 0, 15);
-        }
-        if (debugMode) {
-            ctx.fillStyle = "#de7";
-            ctx.font = "20px monospace";
-            ctx.fillText("x: " + this.x, 0, 20);
-            ctx.fillText("y: " + this.y, 0, 40);
-            ctx.fillText("velocity_x: " + this.velocity_x, 0, 60);
-            ctx.fillText("velocity_y: " + this.velocity_y, 0, 80);
-            ctx.fillText("camera.x: " + camera.x, 0, 100);
-            ctx.fillText("camera.y: " + camera.y, 0, 120);
-        }
-        if (!chatOpened) {
-            ctx.fillStyle = "#22222288";
-            ctx.fillRect(5, height - 35, width * 0.4, 30);
-            ctx.fillStyle = "#aaaaaa88";
-            ctx.font = "15px monospace";
-            ctx.fillText("Нажмите T для чата", 15, height - 15);
-        }
-        else {
-            ctx.fillStyle = "#22222288";
-            ctx.fillRect(5, height - 35, width - 10, 30);
-            ctx.save();
-            ctx.beginPath();
-            ctx.moveTo(5, height - 35);
-            ctx.lineTo(width - 5, height - 35);
-            ctx.lineTo(width - 5, height - 5);
-            ctx.lineTo(5, height - 5);
-            ctx.lineTo(5, height - 35);
-            ctx.closePath();
-            ctx.clip();
-            ctx.font = "15px monospace";
-            if (chatTyping.length == 0) {
-                ctx.fillStyle = "#aaaaaa88";
-                ctx.fillText("Напишите сообщение...", 15, height - 15);
-            }
-            else {
-                ctx.fillStyle = "#ffffff";
-                let text_width = ctx.measureText(chatTyping).width;
-                ctx.fillText(chatTyping, Math.min(10, width - text_width - 10), height - 15);
-            }
-            ctx.restore();
-        }
-        if (chatMessages.length > 0) {
-            let draw_message = (message) => {
-                let lines = wrapText(ctx, message, message_width - 20);
-                let height = lines.length * 20 + 5 + 5;
-                let top = message_bottom - height;
-                ctx.fillStyle = "#22222288";
-                ctx.fillRect(5, top, message_width, height);
-                let y = 5;
-                for (let line of lines) {
-                    ctx.fillStyle = "#ffffff";
-                    ctx.fillText(line, 15, top + y + 15);
-                    y += 5 + 20;
-                }
-                message_bottom -= height + 5;
-            };
-            let message_width = width * 0.4;
-            let message_bottom = height - 35 - 5;
-            if (chatOpened) {
-                chatMessages.forEach(draw_message);
-            }
-            else {
-                draw_message(chatMessages[0]);
-            }
-        }
-    }
-}
-var ticksAlive = 0;
-var debugMode = false;
-var camera = {
-    x: 0.0,
-    y: 0.0,
-    size: 1.5
-};
-var chatOpened = false;
-var chatMessages = [];
-var chatTyping = "";
-var player = new MainPlayer();
-player.register();
-var blocks = [];
-const allowed_key_to_send = [
-    "KeyR", "KeyW", "KeyE", "KeyQ", "KeyS",
-    "Numpad1", "Numpad2", "Numpad3", "Numpad4", "Numpad5",
-    "Numpad6", "Numpad7", "Numpad8", "Numpad9", "Numpad0",
-    "ShiftLeft", "ControlLeft", "Enter",
-    "F1", "F2", "KeyZ", "KeyX", "KeyC"
-];
-function connectServer(address, name) {
-    player.closeConnection();
-    player.onConnect(name);
-    try {
-        let conn = new Connection(address, player.onPacket, (e) => {
-            player.conn = null;
-            setServerError(e == null ? "Connection closed due to error" : e);
-            resetWorld();
-        });
-        conn.send(new JoinPacket(name));
-    }
-    catch (exception) {
-        setServerError(exception);
-    }
-}
-function resetWorld() {
-    player.onConnect("unnamed player");
-    blocks = [];
-    blocks.push(new Block(-1, -1, "#555", true, "normal"));
-    blocks.push(new Block(0, -1, "#a67", true, "spawn"));
-    blocks.push(new Block(1, -1, "#555", true, "normal"));
-}
-function getBlock(x, y) {
-    let value = blocks.find(o => !(o instanceof Player) && o.x == x && o.y == y);
-    if (typeof value === "undefined") {
-        return null;
-    }
-    else {
-        return value;
-    }
-}
-function placeBlock(block) {
-    blocks.push(block);
-}
-function removeBlock(x, y) {
-    blocks = blocks.filter(o => o instanceof Player || o.x != x || o.y != y);
-}
-function getPlayer(name) {
-    let value = blocks.find(o => o instanceof Player && o.name == name);
-    if (typeof value === "undefined") {
-        return null;
-    }
-    else {
-        return value;
-    }
-}
-function removePlayer(name) {
-    blocks = blocks.filter(o => !(o instanceof Player) || o.name != name);
-}
-function render() {
-    ctx.fillStyle = "#333";
-    ctx.fillRect(0, 0, width, height);
-    for (const block of blocks)
-        block.render();
-    for (const block of blocks)
-        block.renderText();
-    player.render();
-    player.renderText();
-}
-function tick() {
-    for (const block of blocks)
-        block.tick();
-    player.tick();
-}
-function renderTick() {
-    for (const block of blocks)
-        block.renderTick();
-    player.renderTick();
-}
-resetWorld();