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void Update(){

    float vertical = Input.GetAxis("Vertical");

    float horizontal = Input.GetAxis("Horizontal");

}

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Input.GetAxis
https://docs.unity3d.com/ja/current/ScriptReferenc...
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  float vertical = Input.GetAxis("Vertical");  <= ¤³¤Î Vertical ¤Îʸ»úÎ󤬡¢InputManager¤Î Name ¤È¤Ä¤Ê¤¬¤Ã¤Æ¤¤¤ë¡£¤½¤Î¤¿¤á¡¢Ê¸»úÎ󤬹çÃפ·¤Æ¤¤¤ëɬÍפ¬¤¢¤ë


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        float vertical;
        if (Input.GetKey(KeyCode.UpArrow) || Input.GetKey(KeyCode.W)) {
            vertical = 1.0f;
        }
        if (Input.GetKey(KeyCode.DownArrow) || Input.GetKey(KeyCode.S)) {
            vertical = -1.0f;
        }

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  float vertical = Input.GetAxis("Vertical");

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  float vertical = Input.GetAxis("Vertical");
¡¡Debug.Log(vertical);   // <= ÄɲÃ


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void Update(){

    float vertical = Input.GetAxisRaw("Vertical");¡¡¡¡¡¡¡¡¡¡// ÆþÎϤò¼õ¤±ÉÕ¤±¤ë¤È 1.0f ¤« -1.0f¤Î¤ß¤òÌ᤹
    Debug.Log(vertical);

    float horizontal = Input.GetAxisRaw("Horizontal");      // ÆþÎϤò¼õ¤±ÉÕ¤±¤ë¤È 1.0f ¤« -1.0f¤Î¤ß¤òÌ᤹

}


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