Error CS1061 について。ディレクティブまたはアセンブリ参照について。

前提・実現したいこと

コンパイルエラーが出ているので、出ない様にしたいです。
また、参考になる様なネットの記述も、あれば教えて欲しいです。

発生している問題・エラーメッセージ

Error CS1061: 'Player' に 'SetDirectionalInput' の定義が含まれておらず、型 'Player' の最初の引数を受け付けるアクセス可能な拡張メソッド 'SetDirectionalInput' が見つかりませんでした。using ディレクティブまたはアセンブリ参照が不足していないことを確認してください。 (CS1061)

該当のソースコード

C#
1/////Script は、”PlayerInput” と ”Player_R01” 、2つあります。///////////
2using UnityEngine;
3using System.Collections;
4using System.Collections.Generic;
5
6
7[RequireComponent (typeof (Player))]
8public class PlayerInput : MonoBehaviour
9{
10
11	Player player;
12
13	void Start () {
14		player = GetComponent<Player> ();
15	}
16
17	void Update () {
18		Vector2 directionalInput = new Vector2 (Input.GetAxisRaw ("Horizontal"), Input.GetAxisRaw ("Vertical"));
19		player.SetDirectionalInput(directionalInput);
20
21		if (Input.GetKeyDown (KeyCode.Space)) {
22			player.OnJumpInputDown();
23		}
24		if (Input.GetKeyUp (KeyCode.Space)) {
25			player.OnJumpInputUp();
26		}
27	}
28}
29//////////////////////////////////////////////////////////////////////////
30using UnityEngine;
31using System.Collections;
32using System.Collections.Generic;
33
34[RequireComponent(typeof(Controller2D))]
35public class Player_R01 : MonoBehaviour
36{
37
38    public float maxJumpHeight = 4;
39    public float minJumpHeight = 1;
40    public float timeToJumpApex = .4f;
41    float accelerationTimeAirborne = .2f;
42    float accelerationTimeGrounded = .1f;
43    float moveSpeed = 6;
44
45    public Vector2 wallJumpClimb;
46    public Vector2 wallJumpOff;
47    public Vector2 wallLeap;
48
49    public float wallSlideSpeedMax = 3;
50    public float wallStickTime = .25f;
51    float timeToWallUnstick;
52
53    float gravity;
54    float maxJumpVelocity;
55    float minJumpVelocity;
56    Vector3 velocity;
57    float velocityXSmoothing;
58
59    Controller2D controller;
60
61    Vector2 directionalInput;
62    bool wallSliding;
63    int wallDirX;
64
65    void Start()
66    {
67        controller = GetComponent<Controller2D>();
68
69        gravity = -(2 * maxJumpHeight) / Mathf.Pow(timeToJumpApex, 2);
70        maxJumpVelocity = Mathf.Abs(gravity) * timeToJumpApex;
71        minJumpVelocity = Mathf.Sqrt(2 * Mathf.Abs(gravity) * minJumpHeight);
72    }
73    
74    void Update()
75    {
76        CalculateVelocity();
77        HandleWallSliding();
78
79        controller.Move(velocity * Time.deltaTime, directionalInput);
80
81        if (controller.collisions.above || controller.collisions.below)
82        {
83            velocity.y = 0;
84        }
85    }
86
87    public void SetDirectionalInput(Vector2 input)
88    {
89        directionalInput = input;
90    }
91
92    public void OnJumpInputDown()
93    {
94        if (wallSliding)
95        {
96            if (wallDirX == directionalInput.x)
97            {
98                velocity.x = -wallDirX * wallJumpClimb.x;
99                velocity.y = wallJumpClimb.y;
100            }
101            else if (directionalInput.x == 0)
102            {
103                velocity.x = -wallDirX * wallJumpOff.x;
104                velocity.y = wallJumpOff.y;
105            }
106            else
107            {
108                velocity.x = -wallDirX * wallLeap.x;
109                velocity.y = wallLeap.y;
110            }
111        }
112        if (controller.collisions.below)
113        {
114            velocity.y = maxJumpVelocity;
115        }
116    }
117
118    public void OnJumpInputUp()
119    {
120        if (velocity.y > minJumpVelocity)
121        {
122            velocity.y = minJumpVelocity;
123        }
124    }
125
126
127    void HandleWallSliding()
128    {
129        wallDirX = (controller.collisions.left) ? -1 : 1;
130        wallSliding = false;
131        if ((controller.collisions.left || controller.collisions.right) && !controller.collisions.below && velocity.y < 0)
132        {
133            wallSliding = true;
134
135            if (velocity.y < -wallSlideSpeedMax)
136            {
137                velocity.y = -wallSlideSpeedMax;
138            }
139
140            if (timeToWallUnstick > 0)
141            {
142                velocityXSmoothing = 0;
143                velocity.x = 0;
144
145                if (directionalInput.x != wallDirX && directionalInput.x != 0)
146                {
147                    timeToWallUnstick -= Time.deltaTime;
148                }
149                else
150                {
151                    timeToWallUnstick = wallStickTime;
152                }
153            }
154            else
155            {
156                timeToWallUnstick = wallStickTime;
157            }
158
159        }
160
161    }
162
163    void CalculateVelocity()
164    {
165        float targetVelocityX = directionalInput.x * moveSpeed;
166        velocity.x = Mathf.SmoothDamp(velocity.x, targetVelocityX, ref velocityXSmoothing, (controller.collisions.below) ? accelerationTimeGrounded : accelerationTimeAirborne);
167        velocity.y += gravity * Time.deltaTime;
168    }
169}