102 lines
3.7 KiB
C#
102 lines
3.7 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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[RequireComponent(typeof(CharacterController))]
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public class PlayerController : MonoBehaviour {
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public float MovementSpeed;
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public float JumpVelocity;
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public float SlideVelocity;
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[Tooltip("How long after falling off a ledge can the player still jump?")]
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public float JumpGracePeriod;
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[Tooltip("Lower values make the movement feel floatier.")]
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public float Antislipperiness = 1;
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[Tooltip("Lower values make the movement feel floatier in air.")]
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public float AntislipperinessInAir = 1;
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[Header("Runtime values")]
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public bool Grounded;
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public Vector3 GroundNormal;
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private CharacterController Character;
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private Vector3 GroundVelocity = new Vector3();
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private float FallingVelocity;
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private float LastGroundedTime;
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private float SlideStartTime;
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private void Awake() {
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Character = GetComponent<CharacterController>();
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}
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private void Start() {
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LastGroundedTime = -JumpGracePeriod;
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Grounded = false;
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}
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private void Update() {
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Vector3 CurrentVelocity = new Vector3();
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GroundNormal = RaycastGroundNormal();
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// Sliding
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bool Sliding = Grounded && Vector3.Angle(GroundNormal, Vector3.up) > Character.slopeLimit;
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// Groundedness stuff and gravity
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if (Character.isGrounded && !Sliding) {
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FallingVelocity = Mathf.Max(0, FallingVelocity);
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LastGroundedTime = Time.time;
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} else {
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FallingVelocity += Physics.gravity.y * Time.deltaTime;
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}
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Grounded = Time.time - LastGroundedTime <= JumpGracePeriod && FallingVelocity <= 0;
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// Jumping
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if (Input.GetButton("Jump") && Grounded) {
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FallingVelocity = JumpVelocity;
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Grounded = false;
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}
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CurrentVelocity += FallingVelocity * Vector3.up;
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float SlippyFactor = Grounded ? Antislipperiness : AntislipperinessInAir;
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// Subtract friction
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float FrictionFactor = Mathf.Max(GroundVelocity.magnitude, 1);
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float Friction = Mathf.Min(GroundVelocity.magnitude, FrictionFactor * SlippyFactor * Time.deltaTime);
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GroundVelocity -= Friction * GroundVelocity.normalized;
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// Add player input momentum
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float TargetSpeed = MovementSpeed; // Tweak this to enable running or stuff
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Vector3 Move = transform.forward * Input.GetAxis("Vertical") + transform.right * Input.GetAxis("Horizontal");
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if (Move.magnitude > 0) {
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if (Grounded) {
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TargetSpeed *= Vector3.Dot(Vector3.up, GroundNormal);
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}
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float CurrentSpeed = Vector3.Dot(Move, GroundVelocity);
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float SpeedDiff = TargetSpeed - CurrentSpeed;
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float Acceleration = Mathf.Min(SpeedDiff, TargetSpeed * SlippyFactor * Time.deltaTime);
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GroundVelocity += Move * Acceleration;
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}
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CurrentVelocity += GroundVelocity;
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// Sliiide
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if (Sliding) {
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CurrentVelocity = Vector3.ProjectOnPlane(CurrentVelocity, GroundNormal);
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CurrentVelocity += Vector3.ProjectOnPlane(-Vector3.up, GroundNormal) * SlideVelocity;
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}
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Character.Move(CurrentVelocity * Time.deltaTime);
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}
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private Vector3 RaycastGroundNormal() {
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RaycastHit Hit;
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if (Physics.CapsuleCast(
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transform.position + Vector3.up * Character.radius,
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transform.position + Vector3.up * (Character.height - Character.radius),
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Character.radius, -Vector3.up, out Hit, Character.skinWidth * 2)) {
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return Hit.normal;
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} else {
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return Vector3.up;
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}
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}
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}
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