Wallrun Updates

-WallRunItem made for equipping/unequipping wall run
-Added Method to PlayerInventory for trying to add special items as items
-Added better method for checking if player isGrounded to PlayerMovement
-Added a setup file for preconfiguring player loadouts
-Added complex wallrun file as a work in progress to allow for robust polished wallrun mechanic

Assets/Scripts/PlayerScripts/ItemScripts/WallRunItem.cs

@@ -0,0 +1,15 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class WallRunItem : Item
+{
+    public void Equip(PlayerStats p){
+        p.HasWallrun = true;
+    }
+
+    public void Unequip(PlayerStats p)
+    {
+        p.HasWallrun = false;
+    }
+}

Assets/Scripts/PlayerScripts/ItemScripts/WallRunItem.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PlayerScripts/PlayerInventory.cs

@@ -12,6 +12,14 @@ public class PlayerInventory : MonoBehaviour
         return true;
     }
 
+    public bool AddSpecialItem<T>(T itemCandidate) { // Unless we don't want the four special items to be handled by inventory/inventory manager?
+        if (itemCandidate is Item) {
+            items.Add(itemCandidate as Item);
+        }
+        return true;
+    }
+
+
     public bool RemoveItem(Item item){
         if(items.Remove(item)){
             return true;

Assets/Scripts/PlayerScripts/PlayerMovement.cs

@@ -30,16 +30,17 @@ public class PlayerMovement : MonoBehaviour
     Vector3 impact = Vector3.zero;
 
     //Wallrunning
-    public float minimumWallrunningHeight = 1.75f;
-    public float maximumDistanceToWall = 0.75f;
-    private Vector3[] directions = new Vector3[]{
-        Vector3.right,
-        Vector3.right+Vector3.forward,
-        Vector3.forward,
-        Vector3.left+Vector3.forward,
-        Vector3.left
-    };
-    
+    private WallRun wallRun;
+
+    //Ground Check
+    public bool isGrounded { get; private set; } //Better custom is grounded 
+    public float groundCheckDistance = 0.05f; //how far away from the ground to not be considered grounded
+    private float lastTimeJumped = 0f; //Last time the player jumped
+    const float jumpGroundingPreventionTime = 0.2f; // delay in checking if we are grounded after a jump
+    const float groundCheckDistanceInAir = 0.07f; //How close we have to get to ground to start checking for grounded again
+    public LayerMask groundCheckLayers = -1; //Physics layers checked to consider the player grounded
+
+
     //Camera Variables
     private Vector3 camRotation;
     private Transform cam;
@@ -73,6 +74,9 @@ public class PlayerMovement : MonoBehaviour
         //camera transform
         cam = Camera.main.transform;
         Cam = Camera.main; //RENAME WHEN CLEANING UP BLINK
+
+        //Wallrun
+        wallRun = gameObject.GetComponent<WallRun>();
     }
 
     void Start(){
@@ -104,6 +108,8 @@ public class PlayerMovement : MonoBehaviour
 
     //Reads inputs and moves player
     private void InputController(){
+        //Check if player is grounded before each frame
+        GroundCheck();
         //Keyboard inputs
 
         //Checks if movement keys have been pressed and calculates correct vector
@@ -115,21 +121,18 @@ public class PlayerMovement : MonoBehaviour
         vel = moveX + moveZ;
 
         //Gravity
-        vel.y -=  pStats.PlayerGrav * Time.deltaTime;
+        Gravity();
 
         driftVel = Vector3.Lerp(driftVel, vel, pStats.Traction*Time.deltaTime);
         //Jump Function
         Jump();
 
-        //Gravity
-        vel.y -= Gravity();
-
         moveController.Move(driftVel);
     }
     
 
     //Calculates speed current player needs to be going
-    private float PlayerSpeed(){
+    public float PlayerSpeed(){
         //If nothing is pressed speed is 0
         if(Input.GetAxis("Vertical") == 0.0f && Input.GetAxis("Horizontal") == 0.0f){
             pStats.CurVel = 0.0f;
@@ -167,7 +170,9 @@ public class PlayerMovement : MonoBehaviour
             curJumpNum++;
             jumpPressed = true;
         }
-        
+
+        lastTimeJumped = Time.time;
+
         //NEEDS TO BE MASSIVELY CHANGE LIKELY USE RAYCAST TO CHECK IF ACTUALLY ON GROUND
         //CANNOT USE CHARACTERCONTROLLER.ISGROUNDED IT IS UNRELIABLE
         //If grounded no jumps have been used
@@ -177,7 +182,22 @@ public class PlayerMovement : MonoBehaviour
         if(Input.GetAxis("Jump")==0) jumpPressed = false;
     }
 
+    public bool GetJumpPressed() {
+        return jumpPressed;
+    }
 
+    public Camera GetPlayerCamera() { 
+        return Cam; 
+    }
+
+    public void AddPlayerVelocity(Vector3 additiveVelocity) {
+        vel += additiveVelocity;
+    }
+
+    public void SetPlayerVelocity(Vector3 newVelocity)
+    {
+        vel = newVelocity;
+    }
 
     //Camera
     private void Rotate()
@@ -201,32 +221,61 @@ public class PlayerMovement : MonoBehaviour
     }
 
     //Gravity Function for adjusting y-vel due to wallrun/glide/etc
-    private float Gravity(){
+    private void Gravity(){
+        //Normal Gravity
+        vel.y -= pStats.PlayerGrav * Time.deltaTime; 
         //Wallrunning
-        if (!moveController.isGrounded && Input.GetAxisRaw("Vertical") != 0) { //If in the air, and moving forward
-            RaycastHit hit;
-            Physics.Raycast(moveController.transform.position, Vector3.down, out hit);
-            if (hit.distance > minimumWallrunningHeight) //If distance from player to ground is > min ground height
-            {
-                foreach (Vector3 direction in directions)
-                {      //For each direction we can wallrun in
-                    Ray ray = new Ray(moveController.transform.position, direction); //Cast a Ray to see if we are by a wall
-                    if (Physics.Raycast(ray, out hit, maximumDistanceToWall)) //If the ray hits a wallrun wall
-                    {
-                        if (hit.collider.tag == "WallRun")
-                        {
-                            return 0; //Don't fall down
-                        }
-                    }
-                }
-            }        
-        }
+        if (pStats.HasWallrun) { wallRun.WallRunRoutine(); } //adjusted later if we are wallrunning
         //If gliding 
             //Go down slowly
-        //Else normal gravity
-        return pStats.PlayerGrav * Time.deltaTime;
     }
 
+    void GroundCheck()
+    {
+        // Make sure that the ground check distance while already in air is very small, to prevent suddenly snapping to ground
+        float chosenGroundCheckDistance = isGrounded ? (moveController.skinWidth + groundCheckDistance) : groundCheckDistanceInAir;
+
+        // reset values before the ground check
+        isGrounded = false;
+        Vector3 groundNormal = Vector3.up;
+
+        // only try to detect ground if it's been a short amount of time since last jump; otherwise we may snap to the ground instantly after we try jumping
+        if (Time.time >= lastTimeJumped + jumpGroundingPreventionTime)
+        {
+            // if we're grounded, collect info about the ground normal with a downward capsule cast representing our character capsule
+            if (Physics.CapsuleCast(GetCapsuleBottomHemisphere(), GetCapsuleTopHemisphere(moveController.height), moveController.radius, Vector3.down, out RaycastHit hit, chosenGroundCheckDistance, groundCheckLayers, QueryTriggerInteraction.Ignore))
+            {
+                // storing the upward direction for the surface found
+                groundNormal = hit.normal;
+
+                // Only consider this a valid ground hit if the ground normal goes in the same direction as the character up
+                // and if the slope angle is lower than the character controller's limit
+                if (Vector3.Dot(hit.normal, transform.up) > 0f && IsNormalUnderSlopeLimit(groundNormal))
+                {
+                    isGrounded = true;
+
+                    // handle snapping to the ground
+                    if (hit.distance > moveController.skinWidth)
+                    {
+                        moveController.Move(Vector3.down * hit.distance);
+                    }
+                }
+            }
+        }
+    }
+
+    private bool IsNormalUnderSlopeLimit(Vector3 normal){  // Returns true if the slope angle represented by the given normal is under the slope angle limit of the character controller
+        return Vector3.Angle(transform.up, normal) <= moveController.slopeLimit;
+    }
+
+    private Vector3 GetCapsuleBottomHemisphere(){  // Gets the center point of the bottom hemisphere of the character controller capsule    
+        return transform.position + (transform.up * moveController.radius);
+    }
+
+    private Vector3 GetCapsuleTopHemisphere(float atHeight){  // Gets the center point of the top hemisphere of the character controller capsule    
+
+        return transform.position + (transform.up * (atHeight - moveController.radius));
+    }
 
     //ADJUST SO DISTANCE IS DETERMINED BY SCROLL WHEEL
     //blinks the player forwards

Assets/Scripts/PlayerScripts/Setup.cs

@@ -0,0 +1,18 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Setup : MonoBehaviour
+{
+    private PlayerStats pstats;
+    public bool hasWallRun;
+    [Range( 1, 50)]
+    public float maxSpeed;
+    // Start is called before the first frame update
+    void Start()
+    {
+        pstats = this.gameObject.GetComponent<PlayerStats>();
+        pstats.HasWallrun = hasWallRun;
+        pstats.MaxVel = maxSpeed;
+    }
+}

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Assets/Scripts/PlayerScripts/WallRun.cs

@@ -0,0 +1,189 @@
+using UnityEngine;
+using System.Linq;
+using UnityEngine.Rendering;
+
+[RequireComponent (typeof(PlayerMovement))]
+public class WallRun : MonoBehaviour
+{
+
+    public float wallMaxDistance = 1;
+    public float wallSpeedMultiplier = 1.2f;
+    public float minimumHeight = 1.2f;
+    public float maxAngleRoll = 20;
+    [Range(0.0f, 1.0f)]
+    public float normalizedAngleThreshold = 0.1f;
+    
+    public float jumpDuration = 1;
+    public float wallBouncing = 3;
+    public float cameraTransitionDuration = 1;
+
+    public float wallGravityDownForce = 20f;
+
+    [Space]
+    PlayerMovement playerMovementController;
+
+    Vector3[] directions;
+    RaycastHit[] hits;
+
+    bool isWallRunning = false;
+    Vector3 lastWallPosition;
+    Vector3 lastWallNormal;
+    float elapsedTimeSinceJump = 0;
+    float elapsedTimeSinceWallAttach = 0;
+    float elapsedTimeSinceWallDetatch = 0;
+    bool jumping;
+
+    bool isPlayergrounded() => playerMovementController.isGrounded;
+
+    public bool IsWallRunning() => isWallRunning;
+
+    bool CanWallRun()
+    {
+        float verticalAxis = Input.GetAxisRaw("Vertical");
+        
+        return !isPlayergrounded() && verticalAxis > 0 && VerticalCheck();
+    }
+
+    bool VerticalCheck()
+    {
+        return !Physics.Raycast(transform.position, Vector3.down, minimumHeight);
+    }
+
+
+    void Start()
+    {
+        playerMovementController = GetComponent<PlayerMovement>();
+
+         directions = new Vector3[]{ 
+            Vector3.right, 
+            Vector3.right + Vector3.forward,
+            Vector3.forward, 
+            Vector3.left + Vector3.forward, 
+            Vector3.left
+        };
+    }
+
+
+    public void WallRunRoutine()
+    {  
+        isWallRunning = false;
+
+        if(playerMovementController.GetJumpPressed())
+        {
+            jumping = true;
+        }
+
+        if(CanAttach())
+        {
+            hits = new RaycastHit[directions.Length];
+
+            for(int i=0; i<directions.Length; i++)
+            {
+                Vector3 dir = transform.TransformDirection(directions[i]);
+                Physics.Raycast(transform.position, dir, out hits[i], wallMaxDistance);
+                if(hits[i].collider != null)
+                {
+                    Debug.DrawRay(transform.position, dir * hits[i].distance, Color.green);
+                }
+                else
+                {
+                    Debug.DrawRay(transform.position, dir * wallMaxDistance, Color.red);
+                }
+            }
+
+            if(CanWallRun())
+            {   
+                hits = hits.ToList().Where(h => h.collider != null).OrderBy(h => h.distance).ToArray();
+                if(hits.Length > 0)
+                {
+                    if(hits[0].collider.tag == "WallRun")
+                    {
+                        OnWall(hits[0]);
+                        lastWallPosition = hits[0].point;
+                        lastWallNormal = hits[0].normal;
+                    }
+                }
+            }
+        }
+
+        if(isWallRunning)
+        {
+            elapsedTimeSinceWallDetatch = 0;
+            elapsedTimeSinceWallAttach += Time.deltaTime;
+            playerMovementController.AddPlayerVelocity((Vector3.down * wallGravityDownForce * Time.deltaTime));
+        }
+        else
+        {   
+            elapsedTimeSinceWallAttach = 0;
+            elapsedTimeSinceWallDetatch += Time.deltaTime;
+        }
+    }
+
+    bool CanAttach()
+    {
+        if(jumping)
+        {
+            elapsedTimeSinceJump += Time.deltaTime;
+            if(elapsedTimeSinceJump > jumpDuration)
+            {
+                elapsedTimeSinceJump = 0;
+                jumping = false;
+            }
+            return false;
+        }
+        return true;
+    }
+
+    void OnWall(RaycastHit hit){
+        float d = Vector3.Dot(hit.normal, Vector3.up);
+        if(d >= -normalizedAngleThreshold && d <= normalizedAngleThreshold)
+        {
+            // Vector3 alongWall = Vector3.Cross(hit.normal, Vector3.up);
+            float vertical = Input.GetAxisRaw("Vertical");
+            Vector3 alongWall = transform.TransformDirection(Vector3.forward);
+
+            Debug.DrawRay(transform.position, alongWall.normalized * 10, Color.green);
+            Debug.DrawRay(transform.position, lastWallNormal * 10, Color.magenta);
+
+            Vector3 moveToSet = alongWall * vertical * playerMovementController.PlayerSpeed() *Time.deltaTime;// * wallSpeedMultiplier;
+            moveToSet.y = 0;
+
+            playerMovementController.SetPlayerVelocity(moveToSet);
+            Debug.Log("On Wall");
+            isWallRunning = true;
+        }
+    }
+
+    float CalculateSide()
+    {
+        if(isWallRunning)
+        {
+            Vector3 heading = lastWallPosition - transform.position;
+            Vector3 perp = Vector3.Cross(transform.forward, heading);
+            float dir = Vector3.Dot(perp, transform.up);
+            return dir;
+        }
+        return 0;
+    }
+
+    public float GetCameraRoll() //Cause camera to roll when wall running - call to this is player movement
+    {
+        float dir = CalculateSide();
+        float cameraAngle = playerMovementController.GetPlayerCamera().transform.eulerAngles.z;
+        float targetAngle = 0;
+        if(dir != 0)
+        {
+            targetAngle = Mathf.Sign(dir) * maxAngleRoll;
+        }
+        return Mathf.LerpAngle(cameraAngle, targetAngle, Mathf.Max(elapsedTimeSinceWallAttach, elapsedTimeSinceWallDetatch) / cameraTransitionDuration);
+    } 
+
+    public Vector3 GetWallJumpDirection() //Add call in jump where if we are wallrunning and jump, the jump vector is multiplied by this
+    {
+        if(isWallRunning)
+        {
+            return lastWallNormal * wallBouncing + Vector3.up;
+        }
+        return Vector3.zero;
+    } 
+}

Assets/Scripts/PlayerScripts/WallRun.cs.meta

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