So, in order to test our game we are going to open two instances of it, one as the … First, we check if the collider tag is the enemyTag we are looking for, to handle collisions only against objects we are looking for (enemies against ships and bullets against enemies). Here we are using another multiplayer feature called ClientRpc (observe the [ClientRpc] tag above the method definition). By doing so, everytime that a player starts a new instance of the game, the NetworkManager will instantiate a Ship.Now you can try playing the game. Remaking of classic games: Snake io games like the one you can play here, for example, are pretty much a modern take on the old Snake game, with multiplayer gameplay.
It will have as configurable parameters maxHealth, enemyTag and destroyOnDeath. When creating a local multiplayer game, one player usually has one side of the keyboard, such as the number keys or arrow keys, and the other player has the other side of the keyboard, such as the W, A, S, D, and/or F keys. Then, we are going to set its UI Scale Mode to Scale With Screen Size. Online multiplayer games can be made with cloud data. We do that by adding the bullet prefab in the Registered Spawnable Prefabs list.Now, you can try playing the game and shoot bullets. Besides that, the TakeDamage method is simple, it decreases the currentHealth and checks if it is less than or equal to 0. If so, the object will be destroyed, if destroyOnDeath is true, or it the currentHealth will be reset and the object will be respawned. The first one is used to define the initial health of the object. Other scripts will be added later, but that’s it for now.The MoveShip script is very simple, in the FixedUpdate method we get the movement from the Horizontal Axis and set the ship velocity accordingly. This method is very similar to OnStart, the only difference is that it is called only for the server. You can play it right here on this page: It’s a pretty simple game: you control a ship in an arena with other players. This tag and the “Cmd” in the beginning of the method name make it a special method called a Command. This method will instantiate a new bullet, set its velocity and destroy it after one second (when the bullet has already left the screen).Again, there are some important network concepts that must be explained here. The last parameter (destroyOnDeath) will be used to determine if an object will be respawned or destroyed after dying.Now, let’s analyze the methods. If anybody knows a simple way to code a multiplayer game, PLEASE TELL ME Notice that this is possible only because CmdShoot is a Command, and not a regular method.Finally, we need to tell the network manager that it can spawn bullets. The ship movement should be synchronized between the two instances of the game.Until now all ships are being spawned in the middle of the screen. In practice, we will make enemies to be destroyed on death, while ships will be respawned.The last method is the respawn one. In unity, a command is a method that is executed in the server, although it has been called in the client. The figure below shows the Ship prefab components, which I will explain now.In order to a game object to be managed by the NetworkManager, we need to add the NetworkIdentity component to it. To let the players to control only their ships, and not all ships in the game, we need to add an If condition in the beginning of the FixedUpdate method checking if this is the local player (if you’re curious on how the game would work without this If condition, try removing it. The Scratch Wiki is made by and for Scratchers. Otherwise, if we’ve moved the ship in one screen, its position wouldn’t be updated in the other screens. So you won’t be able to shoot enemies. Then, other players can connect to this host by as clients (by selecting LAN Client). So, in order to test our game we are going to open two instances of it, one as the Host and another as the Client.However, you can not open two instances of the game in the Unity Editor. A host works as a client and a server at the same time. However, it would be more interesting to set some predefined spawn positions, which is actually easy to do with Unity multiplayer API.First, we need to create a new Game Object to be our spawn position and place it in the desired spawn position. In the update method, it is going to check if the local player has pressed the Space key and, if so, it will call a method to shoot bullets. In our demo multiple players will be able to join the same game to shoot enemies that will be randomly spawned.In order to follow this tutorial, you are expected to be familiar with the following concepts:We’ll be using an asset known as Mirror. Your ship automatically fires bullets, and you’re trying to hit other players with your bullets while avoiding theirs. Round Robin means it will go sequentially through all spawn positions until all of them have been used (for example, first SpawnPosition1 then SpawnPosition2). The first one we are going to create is the player ship.For now, the ship will only move horizontally in the screen, with its position being updated by the NetworkManager. Finally, hit apply before closing.We also need to import the Mirror asset. Again, notice that the CircleCollider2D is a trigger.Now that we have the bullet prefab, we can add a ShootBullets script to the Ship. When moving a ship in a screen, all ships should move together).Before playing the game, we still need to tell the NetworkManager that the Ship prefab is the Player Prefab. I started seeing people post a lot of multiplayer games for a while, and I want to make my own! Notice that, for the ship we need to define the Enemy Tag as “Enemy”, while for the Enemy this attribute value is “Bullet” (you also need to properly define the prefabs tags). Tutorials on Game Development, Unity, Phaser and HTML5In this tutorial we are going to build a simple demo to learn how to use Unity multiplayer features. The client communicates with the server, but do not execute any server only code.