public BitmapImage SetAnimation(Move move)
{
if (move == Move.Stop)
{
move = _lastMove;
}
switch (move)
{
case Move.Down:
_currentEnemyFacing = EnemyFacing.Down;
_lastMove = move;
break;
case Move.Up:
_currentEnemyFacing = EnemyFacing.Up;
_lastMove = move;
break;
case Move.Left:
_currentEnemyFacing = EnemyFacing.Left;
_lastMove = move;
break;
case Move.Right:
_currentEnemyFacing = EnemyFacing.Right;
_lastMove = move;
break;
}
return(_enemyFacingBitmapImages[_currentEnemyFacing]);
}
public void SearchForPlayer()
{
if (CheckPlayerLoc() && TimeCountdown <= 0)
{
TimeCountdown = TimeBetween;
int dir = Random.Range(0, 3);
if (dir == 0)
{
facing = EnemyFacing.UP;
AnimateEnemyFace("enemyup");
}
else if (dir == 1)
{
facing = EnemyFacing.DOWN;
AnimateEnemyFace("enemydown");
}
else if (dir == 2)
{
facing = EnemyFacing.LEFT;
AnimateEnemyFace("enemyleft");
}
else
{
facing = EnemyFacing.RIGHT;
AnimateEnemyFace("enemyright");
}
}
else
{
TimeCountdown -= Time.deltaTime;
}
}
public override void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
{
player = GameObject.FindGameObjectWithTag("Player").transform;
//这里通过anim clip所属animator获取 animator所挂载物体的刚体信息
en_parent_rb = animator.transform.parent.GetComponent <Rigidbody2D>();
//如果不在这里赋予enemy引用变量实例，虽然没有编译错误，下面会无法调用LookAtPlayer()方法
enemy_facing = animator.GetComponent <EnemyFacing>();
}
void Start()
{
xLength = 0f;
yLength = 0f;
enemyMoving = false;
seePlayer = false;
trackingPlayer = false;
facing = EnemyFacing.DOWN;
Physics2D.IgnoreCollision(p.GetComponent <Collider2D>(), GetComponent <Collider2D>());
}
public void EnemyFacePlayer()
{
CanSeePlayer();
if (seePlayer)
{
xLength = Mathf.Abs(p.transform.position.x - transform.position.x);
yLength = Mathf.Abs(p.transform.position.y - transform.position.y);
// possible values, 'enemyup', 'enemydown', 'enemyleft', 'enemyright', 'enemyinvis'
if (yLength >= xLength)
{
if (p.transform.position.y > transform.position.y)
{
facing = EnemyFacing.UP;
AnimateEnemyFace("enemyup");
}
else
{
facing = EnemyFacing.DOWN;
AnimateEnemyFace("enemydown");
}
}
else
{
if (p.transform.position.x > transform.position.x)
{
facing = EnemyFacing.RIGHT;
AnimateEnemyFace("enemyright");
}
else
{
facing = EnemyFacing.LEFT;
AnimateEnemyFace("enemyleft");
}
}
}
}
public bool CheckFacingPlayer()
{
float x = Mathf.Abs(p.transform.position.x - transform.position.x);
float y = Mathf.Abs(p.transform.position.y - transform.position.y);
if (y >= x)
{
if (p.transform.position.y > transform.position.y)
{
desired = EnemyFacing.UP;
}
else
{
desired = EnemyFacing.DOWN;
}
}
else
{
if (p.transform.position.x > transform.position.x)
{
desired = EnemyFacing.RIGHT;
}
else
{
desired = EnemyFacing.LEFT;
}
}
if (desired == facing)
{
return(true);
}
else
{
return(false);
}
}