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 ![logo](assets/banner.png)
 
-Using Godot 4.1.3
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+#  🏠 Introduction
+
+Immersive Home is project to bring Smart Home and Mixed Reality technologies together for an intuitive and immersive experience.
+
+## Features
+
+- **Fast and Intuitive control over IoT devices**
+- **Live overview over your smart home**
+- **Simple way for creating automations**
+- **Comfortable way of consuming virtual media unobstructed**
+- **Advanced automations based on position in room**
+
+## Supported Devices
+
+**Smart Home Platforms**
+- [Home Assistant](https://www.home-assistant.io/)
+
+**Mixed Reality Headsets**
+- Meta Quest 2 / Pro / 3
+
+# Development
+
+In order to contribute to this project, you need the following to be setup before you can start working:
+- Godot 4.1.3 installed
+
+## Fundamentals
+
+Communication with the Smart Home Environment is done using the `HomeAdapters` global. Each environment is made up of devices and entities.
+A device is a collection of different entities and entities can represent many different things in a smart home.
+For example, the entity of name `lights.smart_lamp_1` would control the kitchen lamps while `state.smart_lamp_1_temp` would show the current temperature of the lamp.
+
+### Home Adapters
+
+The `HomeAdapters` global allows to communicate with different backends and offers a set of fundamental functions allowing communication with the Smart Home.
+
+```python
+Device {
+	"id": String,
+	"name": String,
+	"entities": Array[Entity]
+}
+
+Entity {
+	"state": String
+	"attributes": Dictionary
+}
+
+# Get a list of all devices
+func get_devices() -> Signal[Array[Device]]
+
+# Get a single device by id
+func get_device(id: String) -> Signal[Device]
+
+# Returns the current state of an entity.
+func get_state(entity: String) -> Signal[Entity]
+
+# Updates the state of the entity and returns the resulting state
+func set_state(entity: String, state: String, attributes: Dictionary) -> Signal[Entity]
+
+# Watches the state and each time it changes, calls the callback with the changed state, returns a function to stop watching the state
+func watch_state(entity: String, callback: Callable[entity: Entity]) -> Callable
+```
+
+### Interaction Events
+
+Each time a button is pressed on the primary controller, a raycast is done to be able to interact with devices or the UI.
+
+**InteractionEvent**
+```js
+{
+	position: Vector3,
+	rotation: Vector3
+}
+```
+
+| Function called | Args | Description |
+| -- | -- | -- |
+| `_click` | `[event: InteractionEvent]` | The back trigger button has been pressed and released |
+| `_dbl_click` | `[event: InteractionEvent]` | The back trigger button has been pressed and released twice in a row |
+| `_long_click` | `[event: InteractionEvent]` | The back trigger button has been pressed, then hold still for a short period, then released |
+| `_press_down` | `[event: InteractionEvent]` | The back trigger button has been pressed down |
+| `_press_move` | `[event: InteractionEvent]` | The back trigger button has been moved while pressed down |
+| `_press_up` | `[event: InteractionEvent]` | The back trigger button has been released |
+| `_grab_down` | `[event: InteractionEvent]` | The side grap button been pressed down |
+| `_grab_move` | `[event: InteractionEvent]` | The side grap button been pressed down |
+| `_grab_up` | `[event: InteractionEvent]` | The side grap button been released |
+
+### Testing without a VR Headset
+
+In order to test without a headset, press the run project (F5) button in Godot and ignore the prompt that OpenXR failed to start.
+To simulate the headset and controller movement, we're using the [XR Input Simulator](https://godotengine.org/asset-library/asset/1775) asset.
+Click at the link to get a list of the supported controlls.