Client Side¶
To create a multiplayer game we will need to import upside engine.
A basic setup¶
Lets do a basic setup of our multiplayer game game
local players = game:GetService("Players")
local replicatedStorage = game:GetService("ReplicatedStorage")
local playerGui = players.LocalPlayer:WaitForChild("PlayerGui")
local upsideEngineModule = game.ReplicatedStorage:WaitForChild("UpsideEngine")
local upsideEngine = require(upsideEngineModule)
local sceneManager = upsideEngine.GetService("SceneManager")
local crossPlatformService = upsideEngine.GetService("CrossPlatformService")
local networkingService = upsideEngine.GetService("NetworkingService")
local screen = Instance.new("ScreenGui")
screen.Name = "MultiplayerGame"
screen.IgnoreGuiInset = true
screen.Parent = playerGui
local scene = upsideEngine.new "Scene"
scene.Instance.Parent = screen
scene:Enable()
Creating the scenario¶
Lets create a basic scenario for our players
local Terrain = upsideEngine.new "PhysicalObject"
Terrain:SetScene(scene)
local terrInstance = Terrain.Instance
terrInstance.Visible = true
terrInstance.Position = UDim2.fromOffset(0, 0)
terrInstance.Size = UDim2.fromOffset(600, 160)
terrInstance.Image = "rbxassetid://12980969571"
Creating the character¶
Lets create our player character
local character = upsideEngine.new "Character"
character.Anchored = false
character.CanCollide = true
character:SetScene(scene)
character:SetName(game.Players.LocalPlayer.Name)
character:SetSpriteSheet("idle", "rbxassetid://12908048527", Vector2.new(12, 1 ))
character:Play("idle")
local charInstance = character.Instance
charInstance.ImageRectSize = Vector2.new(37.35, 37.35)
charInstance.Position = UDim2.fromOffset(0, -1000)
charInstance.Size = UDim2.fromOffset(100, 100)
crossPlatformService:SetPlayerCharacter(character)
scene.Camera:SetSubject(character)
Client replication¶
As the name say, when we use :ReplicateOnChange(), the object will be replicated if some of his properties change.
Events information:
- The
ReplicationRequestevent is fired every time that an object from other client replicates an object - The
Buildevent is fired when a request is accepted and the object to replicate never was replicated before
networkingService:ReplicateOnChange(character)
networkingService:On("Build", function(object)
-- Its recomended to unanchor the object, it will make the movement smoother
-- that's because the Anchor property is not replicated by default
object.Anchored = false
object:SetScene(scene)
end)
networkingService:On("ReplicationRequest", function(request)
request:Accept() -- It returns the replicated object
end)