public static CellIndex operator -(int lhs, CellIndex rhs)
{
CellIndex result = new CellIndex(0);
result.index = lhs - rhs.index;
result.rangeCheck();
return result;
}
public CellVector(CellIndex dir, int mag)
{
if (dir == CellIndex.topMiddle) {
i_ = 0;
j_ = mag;
} else if (dir == CellIndex.topRight) {
i_ = mag;
j_ = 0;
} else if (dir == CellIndex.bottomRight) {
i_ = mag;
j_ = -mag;
} else if (dir == CellIndex.bottomMiddle) {
i_ = 0;
j_ = -mag;
} else if (dir == CellIndex.bottomLeft) {
i_ = -mag;
j_ = 0;
} else if (dir == CellIndex.topLeft) {
i_ = -mag;
j_ = mag;
} else {
i_ = 0;
j_ = 0;
Debug.LogError("Instantiating CellVector from invalid CellIndex");
}
}
public static CellIndex operator -(CellIndex lhs, int rhs)
{
CellIndex result = new CellIndex(0);
result.index = lhs.index - rhs;
result.rangeCheck();
return result;
}
public CellVector rotated(CellIndex ang)
{
CellVector result = new CellVector(0, 0);
if (ang == CellIndex.topMiddle) {
result.i = i_;
result.j = j_;
} else if (ang == CellIndex.topRight) {
result.i = i_ + j_;
result.j = -i_;
} else if (ang == CellIndex.bottomRight) {
result.i = j_;
result.j = -i_ - j_;
} else if (ang == CellIndex.bottomMiddle) {
result.i = -i_;
result.j = -j_;
} else if (ang == CellIndex.bottomLeft) {
result.i = -i_ - j_;
result.j = i_;
} else if (ang == CellIndex.topLeft) {
result.i = -j_;
result.j = i_ + j_;
} else {
Debug.LogError("CellVector can't rotate by invalid angle: "+ang);
}
return result;
}
public void TypeCasting()
{
CellIndex c = new CellIndex(0);
Assert.IsInstanceOfType(typeof(CellIndex), 1+c, "CellIndex + int should return a CellIndex");
}
public void Arithmetic()
{
CellIndex c1 = new CellIndex(4);
CellIndex c2 = new CellIndex(0) - 2;
Assert.AreEqual(c1, c2, "CellIndex(0)-2 should equal 4, but is instead "+c2);
}
public static CellIndex fromAngle(float degrees)
{
CellIndex result = new CellIndex(0);
// Allow values near 360 to round down to 0
degrees += 30.0f;
// Scale and quantise to index
result.index = Mathf.FloorToInt(degrees / 60.0f);
if (result.index > 5) result.index -= 6;
result.rangeCheck();
return result;
}
