// Start is called before the first frame update
void Start()
{
m_EventSystem = EventSystem.current;
heldSticks = new List <GameObject>();
stickSlot = GetComponent <BoxCollider2D>();
shapeSlot = this.transform.parent.GetComponent <ShapeSlot>();
}
private void FindAllShapeSlots()
{
int i = 0;
foreach (Transform child in transform)
{
ShapeSlot slot = child.GetComponent <ShapeSlot>();
m_Slots[i] = slot;
i++;
}
}
// Update is called once per frame
void Update()
{
// Press R to restart a level
if (Input.GetKeyDown(KeyCode.R))
{
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
}
/*---- CLICK TO DRAG ----*/
// First frame when user clicks left mouse
if (Input.GetMouseButtonDown(0))
{
// If a ray hit a collider (2D)
var hit2d = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
if (hit2d && (hit2d.collider.gameObject.tag == "Stick"))
{
currentStick = hit2d.collider.gameObject;
// Early exit from dragging if a stick is part of a completed shape.
StickSlot stickParentSlot = currentStick.GetComponent <Stick>().GetParentSlot();
if (stickParentSlot != null)
{
if (stickParentSlot.GetShapeSlot().shapeComplete)
{
return;
}
}
stickCenter = currentStick.transform.position;
touchPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
offset = touchPosition - stickCenter;
currentStickSprite = currentStick.GetComponent <SpriteRenderer>();
draggingMode = true;
m_EventSystem.SetSelectedGameObject(currentStick);
}
}
// Every frame when user holds on left mouse
if (Input.GetMouseButton(0))
{
if (draggingMode)
{
// if stick is in a slot: remove it from that slot now
foreach (GameObject slot in slotGameObjects)
{
if (slot.GetComponent <StickSlot>().heldSticks.Contains(currentStick))
{
slot.GetComponent <StickSlot>().heldSticks.Remove(currentStick);
currentStick.GetComponent <Stick>().SetParentSlot(null);
Color originalColor = currentStick.GetComponent <Stick>().originalColor;
// If the stick being removed has a modified color (i.e. there is another stick under):
if (currentStickSprite.color != originalColor)
{
ShapeSlot stickShape = slot.transform.parent.GetComponent <ShapeSlot>();
stickShape.RemoveFromSidesFilled(false);
currentStickSprite.color = originalColor;
currentStickSprite.sortingOrder = 2;
StickSlot currentStickSlot = slot.GetComponent <StickSlot>();
currentStickSlot.topStickColor = currentStickSlot.heldSticks[0].GetComponent <SpriteRenderer>().color;
stickShape.CheckShapeCompleteness();
}
else
{
slot.transform.parent.GetComponent <ShapeSlot>().RemoveFromSidesFilled(true);
slot.GetComponent <StickSlot>().topStickColor = Color.white;
}
// avoid unnecessary computations by exiting loop, since only 1 side can be removed at a time
// TODO change into a while loop?
break;
}
}
touchPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
newCenter = touchPosition - offset;
currentStick.transform.position = new Vector3(newCenter.x, newCenter.y, newCenter.z);
}
}
if (currentStick && draggingMode && (Input.GetKey(KeyCode.LeftArrow) || Input.GetKey(KeyCode.A)))
{
if (currentStick == m_EventSystem.currentSelectedGameObject)
{
currentStick.transform.Rotate(Vector3.forward * velocity * Time.deltaTime);
}
}
if (currentStick && draggingMode && (Input.GetKey(KeyCode.RightArrow) || Input.GetKey(KeyCode.D)))
{
if (currentStick == m_EventSystem.currentSelectedGameObject)
{
currentStick.transform.Rotate(Vector3.back * velocity * Time.deltaTime);
}
}
// When mouse is released
if (Input.GetMouseButtonUp(0))
{
draggingMode = false;
currentStick = null;
}
}
