2015/01/04 글 목록

unity3d stealth 적의 시야 관련 스크립트

| 카테고리 없음 2015. 1. 4. 20:35

Posted by 히아레인

using UnityEngine;
using System.Collections;

public class EnemySight : MonoBehaviour 
{
	public float fieldOfViewAngle = 110f;           // Number of degrees, centred on forward, for the enemy see.
	public bool playerInSight;                      // Whether or not the player is currently sighted.
	public Vector3 personalLastSighting;            // Last place this enemy spotted the player.

private NavMeshAgent nav;                       // Reference to the NavMeshAgent component.
	private SphereCollider col;                     // Reference to the sphere collider trigger component.
	private Animator anim;                          // Reference to the Animator.
	private LastPlayerSighting lastPlayerSighting;  // Reference to last global sighting of the player.
	private GameObject player;                      // Reference to the player.
	private Animator playerAnim;                    // Reference to the player's animator component.
	private PlayerHealth playerHealth;              // Reference to the player's health script.
	private HashIDs hash;                           // Reference to the HashIDs.
	private Vector3 previousSighting;               // Where the player was sighted last frame.
	
	
	void Awake ()
	{
		// Setting up the references.
		nav = GetComponent<NavMeshAgent>();
		col = GetComponent<SphereCollider>();
		anim = GetComponent<Animator>();
		lastPlayerSighting = GameObject.FindGameObjectWithTag(Tags.gameController).GetComponent<LastPlayerSighting>();
		player = GameObject.FindGameObjectWithTag(Tags.player);
		playerAnim = player.GetComponent<Animator>();
		playerHealth = player.GetComponent<PlayerHealth>();
		hash = GameObject.FindGameObjectWithTag(Tags.gameController).GetComponent<HashIDs>();
		
		// Set the personal sighting and the previous sighting to the reset position.
		personalLastSighting = lastPlayerSighting.resetPosition;
		previousSighting = lastPlayerSighting.resetPosition;
	}
	
	
	void Update ()
	{
		// If the last global sighting of the player has changed...
		if(lastPlayerSighting.position != previousSighting)
			// ... then update the personal sighting to be the same as the global sighting.
			personalLastSighting = lastPlayerSighting.position;
		
		// Set the previous sighting to the be the sighting from this frame.
		previousSighting = lastPlayerSighting.position;
		
		// If the player is alive...
		if(playerHealth.health > 0f)
			// ... set the animator parameter to whether the player is in sight or not.
			anim.SetBool(hash.playerInSightBool, playerInSight);
		else
			// ... set the animator parameter to false.
			anim.SetBool(hash.playerInSightBool, false);
	}
	
	
	void OnTriggerStay (Collider other)
	{
		// If the player has entered the trigger sphere...
		if(other.gameObject == player)
		{
			// By default the player is not in sight.
			playerInSight = false;
			
			// Create a vector from the enemy to the player and store the angle between it and forward.
			Vector3 direction = other.transform.position - transform.position;
			float angle = Vector3.Angle(direction, transform.forward);
			
			// If the angle between forward and where the player is, is less than half the angle of view...
			if(angle < fieldOfViewAngle * 0.5f)
			{
				RaycastHit hit;
				
				// ... and if a raycast towards the player hits something...
				if(Physics.Raycast(transform.position + transform.up, direction.normalized, out hit, col.radius))
				{
					// ... and if the raycast hits the player...
					if(hit.collider.gameObject == player)
					{
						// ... the player is in sight.
						playerInSight = true;
						
						// Set the last global sighting is the players current position.
						lastPlayerSighting.position = player.transform.position;
					}
				}
			}
			
			// Store the name hashes of the current states.
			int playerLayerZeroStateHash = playerAnim.GetCurrentAnimatorStateInfo(0).nameHash;
			int playerLayerOneStateHash = playerAnim.GetCurrentAnimatorStateInfo(1).nameHash;
			
			// If the player is running or is attracting attention...
			if(playerLayerZeroStateHash == hash.locomotionState || playerLayerOneStateHash == hash.shoutState)
			{
				// ... and if the player is within hearing range...
				if(CalculatePathLength(player.transform.position) <= col.radius)
					// ... set the last personal sighting of the player to the player's current position.
					personalLastSighting = player.transform.position;
			}
		}
	}
	
	
	void OnTriggerExit (Collider other)
	{
		// If the player leaves the trigger zone...
		if(other.gameObject == player)
			// ... the player is not in sight.
			playerInSight = false;
	}
	
	
	float CalculatePathLength (Vector3 targetPosition)
	{
		// Create a path and set it based on a target position.
		NavMeshPath path = new NavMeshPath();
		if(nav.enabled)
			nav.CalculatePath(targetPosition, path);
		
		// Create an array of points which is the length of the number of corners in the path + 2.
		Vector3[] allWayPoints = new Vector3[path.corners.Length + 2];
		
		// The first point is the enemy's position.
		allWayPoints[0] = transform.position;
		
		// The last point is the target position.
		allWayPoints[allWayPoints.Length - 1] = targetPosition;
		
		// The points inbetween are the corners of the path.
		for(int i = 0; i < path.corners.Length; i++)
		{
			allWayPoints[i + 1] = path.corners[i];
		}
		
		// Create a float to store the path length that is by default 0.
		float pathLength = 0;
		
		// Increment the path length by an amount equal to the distance between each waypoint and the next.
		for(int i = 0; i < allWayPoints.Length - 1; i++)
		{
			pathLength += Vector3.Distance(allWayPoints[i], allWayPoints[i + 1]);
		}
		
		return pathLength;
	}

}

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unity3d Animator 상태 변이가 일어나는지 여부 판단.

| 유니티/Note 2015. 1. 4. 14:03

Posted by 히아레인

public bool IsInTransition(int layerIndex);

Parameters

layerIndex

The layer's index.

Description

Is the specified AnimatorController layer in a transition.

메카님 애니메이션을 제어할시 .

SetBool 등을 사용해서 Transition(상태 전환) 이 일어나는지 여부 판단.

파라메터에는 레이어 인덱스를 넣어서 해당 레이어에서 상태 전환이 일어나는지 판단을 한다.

ex) 상태 전환이 일어날때 소리를 내기.

if(anim.IsInTransition(0) && !audio.isPlaying)

{

audio.Play();

}

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unity3d stealth 카메라 움직임.

| 유니티/Note 2015. 1. 4. 01:14

Posted by 히아레인

using UnityEngine;
using System.Collections;

public class CameraMovement : MonoBehaviour 
{
	public float smooth = 1.5f;         // The relative speed at which the camera will catch up.
	
	
	private Transform player;           // Reference to the player's transform.
	private Vector3 relCameraPos;       // The relative position of the camera from the player.
	private float relCameraPosMag;      // The distance of the camera from the player.
	private Vector3 newPos;             // The position the camera is trying to reach.
	
	
	void Awake ()
	{
		// Setting up the reference.
		player = GameObject.FindGameObjectWithTag(Tags.player).transform;
		
		// Setting the relative position as the initial relative position of the camera in the scene.
		relCameraPos = transform.position - player.position;
		relCameraPosMag = relCameraPos.magnitude - 0.5f;
	}
	
	
	void FixedUpdate ()
	{
		// The standard position of the camera is the relative position of the camera from the player.
		Vector3 standardPos = player.position + relCameraPos;
		
		// The abovePos is directly above the player at the same distance as the standard position.
		Vector3 abovePos = player.position + Vector3.up * relCameraPosMag;
		
		// An array of 5 points to check if the camera can see the player.
		Vector3[] checkPoints = new Vector3[5];
		
		// The first is the standard position of the camera.
		checkPoints[0] = standardPos;
		
		// The next three are 25%, 50% and 75% of the distance between the standard position and abovePos.
		checkPoints[1] = Vector3.Lerp(standardPos, abovePos, 0.25f);
		checkPoints[2] = Vector3.Lerp(standardPos, abovePos, 0.5f);
		checkPoints[3] = Vector3.Lerp(standardPos, abovePos, 0.75f);
		
		// The last is the abovePos.
		checkPoints[4] = abovePos;
		
		// Run through the check points...
		for(int i = 0; i < checkPoints.Length; i++)
		{
			// ... if the camera can see the player...
			if(ViewingPosCheck(checkPoints[i]))
				// ... break from the loop.
				break;
		}
		
		// Lerp the camera's position between it's current position and it's new position.
		transform.position = Vector3.Lerp(transform.position, newPos, smooth * Time.deltaTime);
		
		// Make sure the camera is looking at the player.
		SmoothLookAt();
	}
	
	
	bool ViewingPosCheck (Vector3 checkPos)
	{
		RaycastHit hit;
		
		// If a raycast from the check position to the player hits something...
		if(Physics.Raycast(checkPos, player.position - checkPos, out hit, relCameraPosMag))
			// ... if it is not the player...
			if(hit.transform != player)
				// This position isn't appropriate.
				return false;
		
		// If we haven't hit anything or we've hit the player, this is an appropriate position.
		newPos = checkPos;
		return true;
	}
	
	
	void SmoothLookAt ()
	{
		// Create a vector from the camera towards the player.
		Vector3 relPlayerPosition = player.position - transform.position;
		
		// Create a rotation based on the relative position of the player being the forward vector.
		Quaternion lookAtRotation = Quaternion.LookRotation(relPlayerPosition, Vector3.up);
		
		// Lerp the camera's rotation between it's current rotation and the rotation that looks at the player.
		transform.rotation = Quaternion.Lerp(transform.rotation, lookAtRotation, smooth * Time.deltaTime);
	}
}

캐릭터가 벽에 가려지는걸 방지하기 위해서 총 5개의 경로로 카메라가 이동하는 로직..

standardPos 는 처음 카메라의 위치이고.player.position + relCameraPos; -> relCameraPos = transform.position - player.position; -> transofrm.position;

abovePos는 플레이어의 위치에서 바로 위(직각으로)

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Unity3d Stealth 에서 사용되는 Animator 관리( HashID)

| 유니티/Note 2015. 1. 4. 00:42

Posted by 히아레인

HashID 를 사용해서 Animaotr 를 관리 할수 있다.

각 Animaotr 의 Animation 및 paramerator 값등을 StringToHash로 받아와서 그 값을 이용해서 애니메이션을 제어 할수 있다.

Animation 같은 경우 레이어명.애니메이션 이름으로 받아올수 있고

Parameters 같은 경우 이름명으로 받아올수 있음.

using UnityEngine;
using System.Collections;

public class HashIDs : MonoBehaviour
{
	// Here we store the hash tags for various strings used in our animators.
	public int dyingState;
	public int locomotionState;
	public int shoutState;
	public int deadBool;
	public int speedFloat;
	public int sneakingBool;
	public int shoutingBool;
	public int playerInSightBool;
	public int shotFloat;
	public int aimWeightFloat;
	public int angularSpeedFloat;
	public int openBool;

void Awake ()
	{
		dyingState = Animator.StringToHash("Base Layer.Dying");
		locomotionState = Animator.StringToHash("Base Layer.Locomotion");
		shoutState = Animator.StringToHash("Shouting.Shout");
		deadBool = Animator.StringToHash("Dead");
		speedFloat = Animator.StringToHash("Speed");
		sneakingBool = Animator.StringToHash("Sneaking");
		shoutingBool = Animator.StringToHash("Shouting");
		playerInSightBool = Animator.StringToHash("PlayerInSight");
		shotFloat = Animator.StringToHash("Shot");
		aimWeightFloat = Animator.StringToHash("AimWeight");
		angularSpeedFloat = Animator.StringToHash("AngularSpeed");
		openBool = Animator.StringToHash("Open");
	}
}

// 사용 예..

// 1번 animator parameters 값 변경
anim.SetFloat(hash.speedFloat, 0f);

// 2번 현재 실행되는 애니메이션 판별
if(anim.GetCurrentAnimatorStateInfo(0).nameHash == hash.locomotionState)
{
// locomotionState 상태이면 해당 로직 실행.
}

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unity3d Stealth 코딩 스타일(Tag 를 사용)

| 유니티/Note 2015. 1. 4. 00:35

Posted by 히아레인

이런식으로 태그로 등록된 값들을 태그 리스트에 저장을 하고 외부에서

GameObject.FindGameObjectWithTag API를 사용해서 해당 태그로 지정된 게임 오브젝트를 찾을수 있다.

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'2015/01/04'에 해당되는 글 6건

unity3d stealth 적의 시야 관련 스크립트

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unity3d Animator 상태 변이가 일어나는지 여부 판단.

Parameters

Description

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unity3d stealth 카메라 움직임.

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Unity3d Stealth 에서 사용되는 Animator 관리( HashID)

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