Split the PlayerMovement class into mulltiple files

Assets/Scripts/Player/WallRunningMovement.cs

@@ -0,0 +1,21 @@
+using UnityEngine;
+
+public partial class PlayerMovement : MonoBehaviour
+{
+    private void UpdateWallRunState()
+    {
+        // Calculates the foward direction of the wall
+        Vector3 normal = m_HitRhsWall ? m_RhsWall.normal : m_LhsWall.normal;
+        Vector3 foward = Vector3.Cross(normal, transform.up);
+
+        // Flips the foward direction if facing the other direction
+        if ((m_Orientation.forward - foward).magnitude > (m_Orientation.forward - (-foward)).magnitude)
+        { foward = -foward; }
+
+        // Applies the wall running force to the player
+        m_Body.AddForce(foward * m_WallRunSpeed * m_Body.mass * 10.0f, ForceMode.Force);
+
+        // Removes any vertical velocity the player may have
+        m_Body.velocity = new Vector3(m_Body.velocity.x, 0.0f, m_Body.velocity.z);
+    }
+}