private void Start()
{
this.movement = this.GetComponent <SnapGridMovement>();
Assert.IsNotNull(this.movement, "Missing asset in component");
this.currentMoveDirection = this.movement.GetRandomSnapGridDirection();
}
// -------------------------------------------------------------------------
private Vector2 GetNormVectorFromDirection(SnapGridMovementDirection moveDirection)
{
Vector2 result = new Vector2(0.0f, 0.0f);
switch (moveDirection)
{
case SnapGridMovementDirection.LEFT:
result.x = -1.0f;
break;
case SnapGridMovementDirection.RIGHT:
result.x = 1.0f;
break;
case SnapGridMovementDirection.UP:
result.y = 1.0f;
break;
case SnapGridMovementDirection.DOWN:
result.y = -1.0f;
break;
default:
Assert.IsTrue(false, "Unsupported direction");
break;
}
return(result);
}
public SnapGridMovementDirection GetRandomSnapGridDirection()
{
float rand = Random.Range(0, 10000); // Arbitrary high number
SnapGridMovementDirection dir = (SnapGridMovementDirection)(rand % (float)SnapGridMovementDirection.DIRECTIONS_COUNT);
return(dir);
}
public void ChangeRandomMovementNewDirection()
{
SnapGridMovementDirection newMovementDirection = this.movement.GetRandomSnapGridDirection();
while (newMovementDirection == this.currentMoveDirection)
{
newMovementDirection = this.movement.GetRandomSnapGridDirection();
}
this.currentMoveDirection = newMovementDirection;
}
public bool CanMoveInDirection(SnapGridMovementDirection direction)
{
Vector2 moveVector = GetNormVectorFromDirection(direction) * this.snapGridData.snapDistanceInUnityUnits;
Physics2D.queriesStartInColliders = false;
RaycastHit2D hit = Physics2D.Raycast(this.transform.position, moveVector, this.snapGridData.snapDistanceInUnityUnits);
if (hit.collider == null)
{
return(true);
}
return(false);
}
public bool Move(SnapGridMovementDirection moveDirection)
{
if (this.IsMoving() || !this.canMove)
{
return(false);
}
if (this.CanMoveInDirection(moveDirection))
{
Vector2 moveVector = GetNormVectorFromDirection(moveDirection) * this.snapGridData.snapDistanceInUnityUnits;
Debug.DrawLine(this.transform.position, this.transform.position + new Vector3(moveVector.x, moveVector.y, 0.0f), Color.yellow, 0.5f);
Vector3 oldPosition = this.transform.position;
this.moveReloadAccumulatorInSec = this.moveDurationInSec;
this.movementState = SnapGridMovementState.MOVING;
this.transform.Translate(moveVector);
this.spriteRenderer.transform.position = oldPosition; // The sprite stays at the old position. Then lerp to new
return(true);
}
return(false);
}
