Move the x-offset and y-offset of your canvas to match a player's position
// ==UserScript==
// @name MooMoo.io Move Camera
// @description Move the x-offset and y-offset of your canvas to match a player's position
// @author KOOKY WARRIOR
// @match *://*.moomoo.io/*
// @icon https://moomoo.io/img/favicon.png?v=1
// @require https://cdnjs.cloudflare.com/ajax/libs/msgpack-lite/0.1.26/msgpack.min.js
// @require https://greasyforks.org/scripts/478839-moomoo-io-packet-code/code/MooMooio%20Packet%20Code.js
// @run-at document-start
// @grant unsafeWindow
// @license MIT
// @version 0.3.2
// @namespace https://greasyforks.org/users/999838
// ==/UserScript==
/*
In the chatbox:
- Type "/moveto sid" to move the x-offset and y-offset of your canvas to the position of a player
- To show players' sid, type "/showsid"
- To hide players' sid, type "/hidesid"
- If you wish to return to the normal x-offset and y-offset of your canvas, type "/stop"
*/
;(async () => {
unsafeWindow.movecamera = true
let mySID = null
let showSID = false
let camera = false
let follow = {
exist: false,
sid: null,
x: null,
y: null,
x1: null,
x2: null,
y1: null,
y2: null,
dt: 0
}
let now, delta, lastUpdate
function update() {
now = Date.now()
if (lastUpdate == null) {
lastUpdate = now
}
delta = now - lastUpdate
lastUpdate = now
if (camera && follow.sid != null && follow.exist === true) {
follow.dt += delta
let tmpRate = Math.min(1.7, follow.dt / 170)
let xdiff = follow.x2 - follow.x1
let ydiff = follow.y2 - follow.y1
follow.x = follow.x1 + xdiff * tmpRate
follow.y = follow.y1 + ydiff * tmpRate
}
unsafeWindow.requestAnimationFrame(update)
}
update()
let init = false
await new Promise(async (resolve) => {
let { send } = WebSocket.prototype
WebSocket.prototype.send = function (...x) {
send.apply(this, x)
this.send = send
if (!init) {
init = true
this.addEventListener("message", (e) => {
if (!e.origin.includes("moomoo.io") && !unsafeWindow.privateServer) return
const [packet, data] = msgpack.decode(new Uint8Array(e.data))
switch (packet) {
case PACKETCODE.RECEIVE.setupGame:
mySID = data[0]
break
case PACKETCODE.RECEIVE.updatePlayers:
if (follow.sid != null && camera) {
follow.exist = false
for (let i = 0; i < data[0].length; i += 13) {
if (data[0][i] === follow.sid) {
follow.exist = true
follow.x1 = follow.x || data[0][i + 1]
follow.y1 = follow.y || data[0][i + 2]
follow.x2 = data[0][i + 1]
follow.y2 = data[0][i + 2]
follow.dt = 0
break
}
}
}
break
case PACKETCODE.RECEIVE.receiveChat:
if (data[0] === mySID) {
if (data[1] == "/showsid") {
showSID = true
} else if (data[1] == "/hidesid") {
showSID = false
} else if (data[1].startsWith("/moveto")) {
let e = data[1].split(" ")
if (e[1] != null && Number(e[1]) != NaN) {
follow.sid = Number(e[1])
}
camera = true
} else if (data[1] == "/stop") {
camera = false
follow = {
exist: false,
sid: null,
x: null,
y: null,
x1: null,
x2: null,
y1: null,
y2: null,
dt: 0
}
}
}
break
}
})
}
resolve(this)
}
})
const symbol = Symbol("PositionX")
Object.defineProperty(Object.prototype, "x", {
get() {
if (this.isPlayer === true && this.sid === mySID && camera && follow.sid != null && follow.exist === true) {
return follow.x
}
return this[symbol]
},
set(value) {
this[symbol] = value
},
configurable: true
})
const symbol2 = Symbol("PositionY")
Object.defineProperty(Object.prototype, "y", {
get() {
if (this.isPlayer === true && this.sid === mySID && camera && follow.sid != null && follow.exist === true) {
this.visible = false
return follow.y
}
return this[symbol2]
},
set(value) {
this[symbol2] = value
},
configurable: true
})
const symbol3 = Symbol("MooMooName")
Object.defineProperty(Object.prototype, "name", {
get() {
if (this.isPlayer === true && showSID) {
return this[symbol3] + ` [${this.sid}]`
} else {
return this[symbol3]
}
},
set(value) {
this[symbol3] = value
},
configurable: true
})
})()