Multiplayer.md

Multiplayer

What do we need in life?

We need a mod that adds the Face of Nicolas Cage on all the other players in HB. That's a fact.

Let's get started!

The base

We are going to load a picture of Mister Cage as described right here.

HBU.LoadTexture2D(Application.persistentDataPath.."/face.png")

returns a Texture2D btw.

Finding other Players

All other players can be found using

GameObject.FindObjectsOfType("OtherPlayer")

which returns an Array<OtherPlayer>, which we can easily convert to a lua table using HB's iter (or iter_to_table in V14, works the same):

playerTable = iter(GameObject.FindObjectsOfType("OtherPlayer"))

Now we want to exectute something for all players, which is done in Lua like

for k,v in pairs(iter(GameObject.FindObjectsOfType("OtherPlayer"))) do
  print(v)
end

k is the key, which in this case is the index. v is the value, so the OtherPlayer object (this is what we need).

In Unity, you can often use .transform to access stuff like position, rotation, scale and more.

Let's give that a shot:

for k,v in pairs(iter(GameObject.FindObjectsOfType("OtherPlayer"))) do
  print(v.transform.position)
end

Great! Now we have all the other player's positions 😄.

Cage-i-fying

Adding a Plane

We can add a default Plane like this

GameObject.CreatePrimitive(PrimitiveType.Plane)

Now let's position this plane:

self.planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
self.planeObject.transform.position = Vector3(100, 0, 0)
self.planeObject.transform.rotation = Quaternion.Euler(90, 0, 0)

Now parenting to the player:

self.planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
self.planeObject.transform.parent = iter(GameObject.FindObjectsOfType("OtherPlayer"))[1].transform

self.planeObject.transform.localPosition = Vector3.zero
self.planeObject.transform.localRotation = Quaternion.identity

if you try this ^ code, you will get some weird results:

Some tweaking later:

self.planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
self.planeObject.transform.parent = iter(GameObject.FindObjectsOfType("OtherPlayer"))[1].transform

self.planeObject.transform.localPosition = Vector3(0, 0.8, 0.1) -- move it up and forwards
self.planeObject.transform.localRotation = Quaternion.Euler(90, 0, 0) -- rotate it correctly
self.planeObject.transform.localScale = Vector3.one * 0.2 -- scale it down

Now, it's not perfectly on the head, but one day someone is going to figure that out (hopefully).

Adding a Plane with a texture

self.planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
self.planeObject.transform.parent = iter(GameObject.FindObjectsOfType("OtherPlayer"))[1].transform

self.planeObject.transform.localPosition = Vector3(0, 0.8, 0.1)
self.planeObject.transform.localRotation = Quaternion.Euler(90, 0, 0)
self.planeObject.transform.localScale = Vector3.one * 0.2

self.renderer = self.planeObject:GetComponent("MeshRenderer") -- gets the MeshRenderer
self.renderer.material = Material(Shader.Find("Sprites/Default")) -- removes shading and enabled transparency
self.renderer.material.texture = HBU.LoadTexture2D(Application.persistentDataPath.."/face.png") -- sets face.png as the texture

Read more about the MeshRenderer?

Now we should see one creepy face 👻.

You can see who is the chosen one by typing

print(iter(GameObject.FindObjectsOfType("OtherPlayer"))[1].playerName.name)

into the console.

Last thing to do is loop through all players and do the thing:

for k,v in pairs(iter(GameObject.FindObjectsOfType("OtherPlayer"))) do
  local planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
  planeObject.transform.parent = v.transform
  
  planeObject.transform.localPosition = Vector3(0, 0.8, 0.1)
  planeObject.transform.localRotation = Quaternion.Euler(90, 0, 0)
  planeObject.transform.localScale = Vector3.one * 0.2
  
  local renderer = local planeObject:GetComponent("MeshRenderer") -- gets the MeshRenderer
  renderer.material = Material(Shader.Find("Sprites/Default")) -- removes shading and enabled transparency
  renderer.material.texture = HBU.LoadTexture2D(Application.persistentDataPath.."/face.png") -- sets face.png as the texture
end

Everything put together

local cage = {}

function cage:Awake()
  for k,v in pairs(iter(GameObject.FindObjectsOfType("OtherPlayer"))) do
    local planeObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
    planeObject.transform.parent = v.transform
    
    planeObject.transform.localPosition = Vector3(0, 0.8, 0.1)
    planeObject.transform.localRotation = Quaternion.Euler(90, 0, 0)
    planeObject.transform.localScale = Vector3.one * 0.2
    
    local renderer = local planeObject:GetComponent("MeshRenderer") -- gets the MeshRenderer
    renderer.material = Material(Shader.Find("Sprites/Default")) -- removes shading and enabled transparency
    renderer.material.texture = HBU.LoadTexture2D(Application.persistentDataPath.."/face.png") -- sets face.png as the texture
  end
end

function cage:Update() end

return cage

Now, this mod is certainly not perfect, but I just wanted to show you how to

1. Combine different things you learned
2. Have fun with Nicolas Cage's face
3. Mess with Multiplayer

Thanks for reading 😄.

Author: Ryz