Entity (base)
├── Actor (base for actors with transforms)
│   └── Pawn (can be possessed by players)
│       └── Character (humanoid characters)
├── StaticMesh (static geometry)
├── Prop (physics-enabled objects)
├── Sound (audio sources)
├── Particle (particle effects)
└── Blueprint (Unreal Blueprint actors)

-- Subscribe to events
Character.Subscribe("Spawn", function(entity)
    Log("Character spawned: " .. entity:GetId())
end)

Character.Subscribe("Destroy", function(entity)
    Log("Character destroyed")
end)

-- Value bindings
Character.BindValue("health", function(entity, key, newVal, oldVal)
    if newVal <= 0 then
        entity:Destroy()
    end
end)

-- Get entities
local all = Character.GetAll()
local char = Character.GetByID(123)
local count = Character.GetCount()

local pos = entity:GetPosition()  -- or GetLocation()
entity:SetPosition(Vec3(100, 200, 50))

local rot = entity:GetRotation()
entity:SetRotation(QuatStatic.FromEuler(0, 90, 0))

local scale = entity:GetScale()
entity:SetScale(Vec3(2, 2, 2))

-- Public values (synced to all clients)
entity:SetValue("health", 100)
entity:SetValue("team", "blue")
local health = entity:GetValue("health")

-- Private values (synced only to owner)
entity:SetPrivateValue("secret_code", "abc123")

-- Subscribe to custom instance events
entity:Subscribe("OnHit", function(ent, damage, attacker)
    Log("Hit for " .. damage .. " damage")
end)

-- Fire custom events
entity:Fire("OnHit", 25, attackerEntity)

local char = Character.Spawn(Vec3(0, 0, 100))
local char = Character.Spawn(Vec3(0, 0, 100), QuatStatic.Identity())
local char = Character.Spawn(Vec3(0, 0, 100), nil, "SK_Mannequin")

local vel = char:GetVelocity()
char:SetVelocity(Vec3(0, 0, 500))  -- Launch upward

local controlRot = char:GetControlRotation()
char:SetControlRotation(newRot)

local player_id = char:GetPlayer()  -- Returns player ID or nil

char:Jump()
local grounded = char:IsGrounded()

local mesh = StaticMesh.Spawn(Vec3(0, 0, 0), nil, "SM_Cube")

local prop = Prop.Spawn(Vec3(0, 0, 200), nil, "SM_Crate")
prop:SetVelocity(Vec3(0, 0, -100))

local sound = Sound.Spawn(Vec3(0, 0, 0), "Explosion_Cue", true)  -- auto_play

local fx = Particle.Spawn(Vec3(0, 0, 0), nil, "P_Explosion")

local bp = Blueprint.Spawn(Vec3(0, 0, 0), nil, "BP_Door")

-- Define custom class
PlayerCharacter = Character.Inherit("PlayerCharacter")

-- Add custom methods
function PlayerCharacter:TakeDamage(amount)
    local health = self:GetValue("health") or 100
    health = health - amount
    self:SetValue("health", health)

    if health <= 0 then
        self:Fire("OnDeath")
    end
end

function PlayerCharacter:Heal(amount)
    local health = self:GetValue("health") or 0
    health = math.min(100, health + amount)
    self:SetValue("health", health)
end

-- Use custom class
local char = PlayerCharacter(Vec3(0, 0, 100))
char:SetValue("health", 100)
char:TakeDamage(25)  -- Custom method works!

local char = PlayerCharacter(Vec3(0, 0, 0))
print(char:IsA("PlayerCharacter"))  -- true
print(char:IsA("Character"))         -- true
print(char:IsA("Pawn"))              -- true
print(char:IsA("Entity"))            -- true
print(char:GetClass())               -- "PlayerCharacter"
print(char:GetBaseClass())           -- "Character"

-- Give authority to a player (for client-side prediction)
entity:SetNetworkAuthority(player:GetId())

-- Return to server authority
entity:SetNetworkAuthority(nil)

-- Check current authority
local auth = entity:GetNetworkAuthority()  -- Player ID or nil