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Implementing Player Controller and Movement in Unity

In the previous video, we successfully implemented the player input script to gather input from the player and the input interface that will be beneficial when developing an AI agent. Now, we need to retrieve this information from our delegates by creating an agent controller script. Let's dive into creating the agent controller script by following the steps outlined below.

Creating the Agent Controller Script

1. Create a New C# Script:

   • Open Unity and create a new C# script named AgentController.

2. Initialization:

   • Within the script, initialize the required references:

     public class AgentController : MonoBehaviour
     {
         private IInput input;
     
         void Start()
         {
             input = GetComponent<IInput>();
         }
     }
     

3. Handling Movement Input:

   • Implement handling the movement input by assigning callbacks for movement:

     input.OnMovement += (direction) =>
     {
         Vector3 inputDir;
         Debug.Log("Direction: " + inputDir);
     };
     
     input.OnMovementInput += (movement) =>
     {
         Vector2 movementInput;
         // Logic for movement input
     };
     

4. Testing in Unity:

   • Add the AgentController component to the player in Unity.
   • Press play to verify that the input is captured based on player movements.

Creating the Agent Movement Script

1. Create a New C# Script:

   • Create a new C# script named AgentMovement.

2. Character Controller Initialization:

   • Initialize the character controller and essential parameters:

     public class AgentMovement : MonoBehaviour
     {
         private CharacterController controller;
         public float rotationSpeed;
         public float movementSpeed;
         public float gravity = 20f;
         private Vector3 movementVector = Vector3.zero;
         private float desiredRotationAngle = 0f;
     
         void Start()
         {
             controller = GetComponent<CharacterController>();
         }
     }
     

3. Movement Handling:

   • Implement movement logic based on player input:

     public void HandleMovement(Vector2 input)
     {
         if (controller.isGrounded)
         {
             if (input.magnitude > 0)
             {
                 movementVector = transform.forward * movementSpeed;
             }
             else
             {
                 movementVector = Vector3.zero;
             }
         }
     }
     

4. Rotation and Animation Handling:

   • Integrate rotation and animation logic based on movement:

     void Update()
     {
         // Apply gravity
         movementVector.y -= gravity;
     
         // Move the controller
         controller.Move(movementVector * Time.deltaTime);
     
         // Rotate the agent when moving
         RotateAgent();
     }
     
     private void RotateAgent()
     {
         // Logic for agent rotation
     }
     

After implementing both the AgentController and AgentMovement scripts, test your player movement mechanics in Unity to ensure everything is functioning as expected.

In the next video, we will delve into implementing an AI agent controller to enhance the gameplay experience further. Stay tuned for more exciting updates!

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Implementing player control and movement in Unity involves a series of scripts to handle input, character control, rotation, and animation. Follow the steps above to create a seamless player experience in your game development journey.

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