public void SetTargets(List <UIPointerTarget> targets)
{
this.targets = targets;
if (this.targets == null || this.targets.Count == 0)
{
return;
}
var idx = 0;
while (idx < this.targets.Count)
{
UIPointerTarget target = this.targets[idx];
GameObject pointer = new GameObject();
pointer.name = "Pointer";
Image pointerImage = pointer.AddComponent <Image>();
pointerImage.sprite = target.sprite;
pointerImage.transform.localScale = Vector3.one * 0.2f;
pointer.GetComponent <RectTransform>().SetParent(transform);
target.pointer = pointer.GetComponent <RectTransform>();
idx++;
}
}
private void Update()
{
if (player == null)
{
return;
}
if (targets == null || targets.Count == 0)
{
return;
}
for (int idx = 0; idx < targets.Count; idx++)
{
UIPointerTarget target = targets[idx];
if (target.transform.gameObject.GetComponent <Damageable>().isDead)
{
target.pointer.gameObject.SetActive(false);
continue;
}
Vector3 toPosition = target.transform.position;
Vector3 fromPosition = player.position;
Vector3 dir = (toPosition - fromPosition).normalized;
Vector3 targetPositionScreenPoint = Camera.main.WorldToScreenPoint(toPosition);
if (targetPositionScreenPoint.z < 0)
{
targetPositionScreenPoint.x = Screen.width - targetPositionScreenPoint.x;
targetPositionScreenPoint.y = Screen.height - targetPositionScreenPoint.y;
}
bool isOffScreen = targetPositionScreenPoint.x <= 0 || targetPositionScreenPoint.x >= Screen.width || targetPositionScreenPoint.y <= 0 || targetPositionScreenPoint.y >= Screen.height;
if (isOffScreen)
{
target.pointer.gameObject.SetActive(true);
Vector3 cappedTargetScreenPosition = targetPositionScreenPoint;
if (cappedTargetScreenPosition.x <= 20)
{
cappedTargetScreenPosition.x = 20f;
}
if (cappedTargetScreenPosition.x >= Screen.width - 20)
{
cappedTargetScreenPosition.x = Screen.width - 20;
}
if (cappedTargetScreenPosition.y <= 20)
{
cappedTargetScreenPosition.y = 20f;
}
if (cappedTargetScreenPosition.y >= Screen.height - 20)
{
cappedTargetScreenPosition.y = Screen.height - 20;
}
target.pointer.position = cappedTargetScreenPosition;
target.pointer.localPosition = new Vector3(target.pointer.localPosition.x, target.pointer.localPosition.y, 0f);
}
else
{
target.pointer.gameObject.SetActive(false);
}
}
}
