using UnityEngine;

namespace Engine.Graphics.Vector {

[AddComponentMenu("Vectrosity/BrightnessControl")]

public class BrightnessControl : GameObjectBehavior {

private RefInt m_objectNumber;

private VectorLine vectorLine;

private bool useLine = false; // Normally false, since Visibility scripts take care of this

private bool destroyed = false;

public RefInt objectNumber {

get { return m_objectNumber; }

}

public void Setup(VectorLine line, bool useLine) {

if (line.lineColors == null) {

LogUtil.LogError("In order to use Brightness.Fog, the line \"" + line.vectorObject.name + "\" must contain segment colors");

return;

}

m_objectNumber = new RefInt(0);

VectorManager.CheckDistanceSetup(transform, line, line.lineColors[0], m_objectNumber);

VectorManager.SetDistanceColor(m_objectNumber.i);

if (useLine) { // Only if there are no Visibility scripts being used

this.useLine = true;

vectorLine = line;

}

}

public void SetUseLine(bool useLine) {

this.useLine = useLine;

}

// Force the color to be set when becoming visible

private void OnBecameVisible() {

VectorManager.SetOldDistance(m_objectNumber.i, -1);

VectorManager.SetDistanceColor(m_objectNumber.i);

if (!useLine) return;

Vector.Active(vectorLine, true);

}

public void OnBecameInvisible() {

if (!useLine) return;

Vector.Active(vectorLine, false);

}

private void OnDestroy() {

if (destroyed) return; // Paranoia check

destroyed = true;

VectorManager.DistanceRemove(m_objectNumber.i);

if (useLine) {

Vector.DestroyLine(ref vectorLine);

}

}

}

}