private void Update()
{
if (target == null)
{
target = FindTarget();
}
}
public override void MoveTowards(AttackableBuilding target)
{
var direction = target.PathFrom(transform.position);
if (direction == MoveDirection.Left || direction == MoveDirection.Down)
{
_lastHorizontal = direction;
}
if (_lastHorizontal == MoveDirection.Left)
{
transform.localScale = new Vector3(Math.Abs(transform.localScale.x) * -1, transform.localScale.y,
transform.localScale.z);
}
else if (target.transform.position.x > transform.position.x + _monster.Attributes.Range)
{
transform.localScale = new Vector3(Math.Abs(transform.localScale.x), transform.localScale.y,
transform.localScale.z);
}
switch (direction)
{
case MoveDirection.Left:
case MoveDirection.Right:
var forceDir = direction == MoveDirection.Left ? Vector3.left : Vector3.right;
_rigidbody2D.AddForce(forceDir * _monster.Attributes.MoveForce);
if (Mathf.Abs(_rigidbody2D.velocity.x) > _monster.Attributes.MaxSpeed)
{
_rigidbody2D.velocity = new Vector2(
Mathf.Sign(_rigidbody2D.velocity.x) * _monster.Attributes.MaxSpeed,
_rigidbody2D.velocity.y);
}
break;
case MoveDirection.Up:
_rigidbody2D.AddForce(new Vector2(0, _monster.Attributes.JumpForce));
break;
case MoveDirection.Down:
case MoveDirection.None:
// change animation to idle
_rigidbody2D.velocity = new Vector2(0, _rigidbody2D.velocity.y);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public override void MoveTowards(AttackableBuilding target)
{
if (!_knowsPosition)
{
_cell = _monster.Placeables.WorldToCell(transform.position);
_knowsPosition = true;
}
if (_wait <= 0)
{
_wait = WaitAfterMoveS;
_cell = target.NextCell(_cell, steps);
// make sure worm is on top of a ground tile
var cellOnTopOfGround = _cell;
const int min = -1000;
while (_monster.Terrain.GetTile(cellOnTopOfGround + Vector3Int.down) == null &&
cellOnTopOfGround.y > min)
{
cellOnTopOfGround += Vector3Int.down;
}
if (cellOnTopOfGround.y > min)
{
_cell = cellOnTopOfGround;
}
var targetPos = _monster.Placeables.CellToWorld(_cell);
// perturbate position a bit
transform.position = new Vector3(targetPos.x + Random.Range(-0.5f, 0.5f),
targetPos.y + Random.Range(0.4f, 0.8f),
transform.position.z);
}
else
{
_wait -= Time.fixedDeltaTime;
}
}
/// <summary> /// Call in FixedUpdate to Move the monster /// </summary> /// <param name="attackableBuilding"></param> public abstract void MoveTowards(AttackableBuilding attackableBuilding);
