Input

• Ships retrieve user input through Input class which retrieves input from active InputProvider and fills the InputStates struct with the retrieved data.
  
• InputProviders are split into ShipInputProviders and SceneInputProviders. ShipInputProviders relay ship input (throttle, brakes, etc.) while SceneInputProviders take care of scene input (ship changing, camera changing, camera movement and the rest of the inputs not directly related to ship. One of each needs to be present (e.g. InputSystemShipInputProvider and InputSystemSceneInputProvider).
• Multiple different InputProviders can be present in the scene (v1.0 or newer required). E.g. InputSystemProviders and MobileInputProviders can be used in the same scene. The resulting input will be a sum of inputs from all InputProviders in case of numeric inputs and logical OR operation of all inputs in case of boolean inputs.
• Input is stored inside InputStates object and can be copied over from one ship to another.
• To manually set the InputStates make sure Auto Settable is set to false.

All input providers inherit from either ShipInputProviderBase or SceneInputProviderBase, but differ in their implementation.

When importing the asset for the first time this message will pop up:

Both Yes or No can be selected but it is important to set the Project Settings ⇒ Player ⇒ Input Handling to Both afterwards. This way both new InputSystem and the old InputManager will work. If this setting is set to InputManager only errors might appear as the demo scenes of the asset rely on InputSystem.
If a message This Unity Package has Package Manager dependencies. appears, click Install/Upgrade.

Out of the box gamepad bindings are only available for InputSystem.

• Type of InputProvider for handling user input on desktop devices through keyboard and mouse or gamepad.
• Uses classic/old Unity Input Manager. It is recommended to use the Unity's new Input System instead for new projects.

InputSystem package is required even if not used. If using the old/classic Unity input set Project Settings ⇒ Player ⇒ Input Handling to Both and proceed as normal. InputSystem package being present installed will not interfere with old/classic Unity input / InputManager.

When first importing Dynamic Water Physics 2 the project will be missing required bindings. There are two ways to add those:

1. Manually adding each entry to the Project Settings ⇒ Input following the input bindings table.
2. Copying the contents of InputBindings.txt and appending them to the contents of the [UnityProjectPath]/ProjectSettings/InputManager.asset file. To do so:
   • Close Unity.
   • Open InputManager.asset in Notepad/Notepad++/Visual Studio or any other text editor of your choice.
   • Copy the contents of the provided InputBindings.txt file (Scripts ⇒ ShipController ⇒ Input ⇒ InputProviders ⇒ InputManagerProvider ⇒ InputBindings.txt) and paste them at the end of the InputManager.asset. Make sure there are no empty lines between the existing content and the pasted content. Also make sure that all the indents are correct (Unity will detect end of file if indent is off). Save the file.
   • Open Unity. Check Project Settings ⇒ Input. The input bindings for Dynamic Water Physics will appear towards the bottom of the list.

To set up InputManager-based input in the scene add the following components to the scene:

1. 'InputManagerShipInputProvider'
2. 'InputManagerSceneInputProvider'

Any ship that is present in the scene will now receive input from these providers.

• InputSystem v1.0 or higher is required. This is available in Unity 2019.3 or newer.

When using DS4Windows, InputSystem will detect button presses twice.

• Install 'Input System' package through Window ⇒ Package Manager
• Under Edit ⇒ Project Settings ⇒ Player ⇒ Other Settings ⇒ Active Input Handling select Input System Package (New) or Both - the latter in case your project still uses UnityEngine.Input somewhere.

• Add InputSystemShipInputProvider and InputSystemSceneInputProvider to any object in your scene.
• Default bindings can be modified by double clicking on .inputactions files. Save Asset must be clicked for the changes to take effect.

• Add MobileShipInputProvider and MobileSceneInputProvider to the scene.
• Create a few UI ⇒ Button objects inside your canvas. Make sure that they are clickable.
• Remove the UnityEngine.UI.Button component and replace it with MobileInputButton. MobileInputButton inherits from UnityEngine.UI.Button and adds hasBeenClicked and isPressed fields which are required for Mobile Input Provider
• Drag the buttons to the corresponding fields in the MobileShipInputProvider and MobileSceneInputProvider inspectors. Empty fields will be ignored.

Since v1.0 multiple InputProviders can be present in the scene, meaning that their input has to be combined to get the final input result. To get the combined input use:

float throttle = InputProvider.CombinedInput(i => i.Throttle());
bool engineStartStop = InputProvider.CombinedInput(i => i.EngineStartStop());

Or to get the input from individual InputProviders (say to find out if a button was pressed on a keyboard): <code>float throttle = InputProvider.Instances[0].Throttle;</code> When using input generated by code (i.e. AI) it is usually handy to have access to a single axis throttle/brake. This can be done like so:

shipController.input.Throttle = 0.5f;
shipController.input.Throttle = -0.5f;

shipController.input.states.throttle is equal to shipController.input.Throttle. The latter is just a getter/setter for convenience.

Input in each ship is stored in InputStates struct:

myShipController.input.states

In case input should not be retrieved from user but from another script - as is the case when AI is used - AutoSettable should be set to false. This will disable automatic input fetching from the active InputProvider.
Input now can be set from any script:

myShipController.input.Horizontal = myFloatValue; // Using getter/setter.

myShipController.input.states.horizontal = myFloatValue; // Directly accessing states.

If a custom InputProvider is needed it can easily be written. Custom InputProviders allow for new input methods or for modifying the existing ones. E.g. if the MobileInputProvider does not fit the needs of the project a copy of it can be made and modifications done on that copy. That way it will not get overwritten when the asset is updated.

Steps to create a new InputProvider:

• Create a new class, e.g. ExampleInputProvider and make it inherit from InputProvider class:

public class ExampleInputProvider : InputProvider {}

• Implement missing methods. Most IDEs can do this automatically.
• The required methods are abstract and will need to be implemented. There are also virtual methods such as ToggleGUI() which are optional and will be ignored if not implemented.
• Methods that are not used should return false, 0 or -999 in case of ShiftInto() method.