using UnityEngine;
using System.Collections;

namespace RootMotion.Demos {

    /// <summary>
    /// User input for a third person character controller.
    /// </summary>
    public class UserControlThirdPerson : MonoBehaviour {

        // Input state
        public struct State {
            public Vector3 move;
            public Vector3 lookPos;
            public bool crouch;
            public bool jump;
            public int actionIndex;
        }

        public bool walkByDefault;        // toggle for walking state
        public bool canCrouch = true;
        public bool canJump = true;

        public State state = new State();           // The current state of the user input

        protected Transform cam;                    // A reference to the main camera in the scenes transform

        void Start () {
            // get the transform of the main camera
            cam = Camera.main.transform;
        }

        protected virtual void Update () {
            // read inputs
            state.crouch = canCrouch && Input.GetKey(KeyCode.C);
            state.jump = canJump && Input.GetButton("Jump");

            float h = Input.GetAxisRaw("Horizontal");
            float v = Input.GetAxisRaw("Vertical");

            // calculate move direction
            state.move = Quaternion.LookRotation(new Vector3(cam.forward.x, 0f, cam.forward.z).normalized) * new Vector3(h, 0f, v).normalized;

            bool walkToggle = Input.GetKey(KeyCode.LeftShift);

            // We select appropriate speed based on whether we're walking by default, and whether the walk/run toggle button is pressed:
            float walkMultiplier = (walkByDefault ? walkToggle ? 1 : 0.5f : walkToggle ? 0.5f : 1);

            state.move *= walkMultiplier;

            // calculate the head look target position
            state.lookPos = transform.position + cam.forward * 100f;
        }
    }
}