CharacterController2D.cs

using UnityEngine;
using System.Collections;

/// <summary>
/// キャラクターコントローラー２D
/// アタッチした時以下を追加
/// ・Animator
/// ・Rigidbody2D
/// ・BoxCollider
/// ・SpriteRenderer
/// </summary>
[RequireComponent(typeof(Animator))]
[RequireComponent(typeof(Rigidbody2D))]
[RequireComponent(typeof(BoxCollider2D))]
[RequireComponent(typeof(SpriteRenderer))]
public class CharacterController2D : MonoBehaviour
{
	[Header("GROUND_LAYER")]
	public LayerMask groundLayer;
	[Header("CHARACTER_IMAGE_DIR")]
	public CharaImageDir charaImageDir;

	[Header("ANIMATION_NAME")]
	public string animNameJump = "Jump";
	public string animNameIdle = "Idle";
	public string animNameWalk = "Walk";

	[Header("CHARACTER_STATUS")]
	public float charaScale = 1.0f;
	public float charaHead = 1.0f;
	public float charaFoot = -1.0f;
	public float charaWidth = 1.0f;
	public float charaGravityScale = 1.0f;
	public float charaMoveSpeed = 5.0f;
	public float charaJumpScale = 10.0f;
	public float charaCeilingBouness = -1.0f;

	[Header("KEY_CONFIG")]
	public bool isInput = true;

	private Rigidbody2D rigid;
	private Animator animator;
	private bool isDeath = false;
	private float lastDir = 1.0f;

	/// <summary>
	/// キャラの向き
	/// </summary>
	public enum CharaImageDir
	{
		Right,
		Left
	}

	/// <summary>
	/// 開始処理
	/// </summary>
	void Start ()
	{
		Init();
	}
	
	/// <summary>
	/// 更新処理
	/// </summary>
	void Update ()
	{
		Animation();

		if (isInput)
			InputKey();
	}

	/// <summary>
	/// 初期化
	/// </summary>
	void Init()
	{
		rigid = this.gameObject.GetComponent<Rigidbody2D>();
		animator = this.gameObject.GetComponent<Animator>();

		rigid.freezeRotation = true;
		rigid.gravityScale = charaGravityScale;
	}

	/// <summary>
	/// シーンビューにキャラ頭の線と床の線を表示させる
	/// </summary>
	void OnDrawGizmos()
	{
		Gizmos.color = Color.blue;
		Vector3 floorA = transform.position + new Vector3(-(charaWidth / 2), charaFoot);
		Vector3 floorB = transform.position + new Vector3((charaWidth / 2), charaFoot);
		Gizmos.DrawLine(floorA, floorB);

		Vector3 ceilingA = transform.position + new Vector3(-(charaWidth / 2), charaHead);
		Vector3 ceilingB = transform.position + new Vector3((charaWidth / 2), charaHead);
		Gizmos.DrawLine(ceilingA, ceilingB);
	}

	/// <summary>
	/// キー入力
	/// </summary>
	void InputKey()
	{
		if (isDeath)
			return;

		if (Input.GetButtonDown("Jump"))
			Jump();

		Move(Input.GetAxisRaw("Horizontal"));

	}


	/// <summary>
	/// アニメーション制御
	/// </summary>
	void Animation()
	{
		if (isDeath)
			return;

		if (!isGranded())
			animator.Play(animNameJump);
		else if (rigid.velocity.x == 0.0f)
			animator.Play(animNameIdle);
		else
			animator.Play(animNameWalk);
	}

	/// <summary>
	/// ジャンプした時
	/// </summary>
	public void Jump()
	{
		if (isGranded())
		{
			var nowVec= rigid.velocity;
			rigid.velocity = new Vector3(nowVec.x, charaJumpScale);
		}
	}

	/// <summary>
	/// 移動
	/// </summary>
	public void Move(float rightSpeed )
	{

		if (rightSpeed != 0.0f)
			lastDir = (rightSpeed == 0) ? lastDir : rightSpeed;

		if (isDeath)
			return;

		var dir = rightSpeed * charaMoveSpeed;

		if (charaImageDir == CharaImageDir.Right)
			transform.localScale = new Vector3(lastDir * charaScale, charaScale);
		else
			transform.localScale = new Vector3(-lastDir * charaScale, charaScale);
		
		rigid.velocity = new Vector2(dir,rigid.velocity.y);


		if (isCeiling())
			rigid.velocity = new Vector2(rigid.velocity.x, charaCeilingBouness);
	}


	/// <summary>
	/// 地面についているかどうか
	/// </summary>
	/// <returns></returns>
	public bool isGranded()
	{
		Vector3 floorA = transform.position + new Vector3(-(charaWidth / 2),charaFoot);
		Vector3 floorB = transform.position + new Vector3((charaWidth / 2), charaFoot);
		bool hit = Physics2D.Linecast(floorA, floorB, groundLayer);
		return hit;
	}

	/// <summary>
	/// 頭が当たったかどうか
	/// </summary>
	/// <returns></returns>
	public bool isCeiling()
	{
		Vector3 ceilingA = transform.position + new Vector3(-(charaWidth / 2), charaHead);
		Vector3 ceilingB = transform.position + new Vector3((charaWidth / 2), charaHead);
		bool hit = Physics2D.Linecast(ceilingA, ceilingB, groundLayer);
		return hit;
	}

	/// <summary>
	/// 死んだとき
	/// </summary>
	public void Death()
	{
		isDeath = true;
	}
}