internal static PolygonTrigger Parse(BinaryReader reader, ushort version)
{
var result = new PolygonTrigger
{
Name = reader.ReadUInt16PrefixedAsciiString()
};
if (version >= 4)
{
result.LayerName = reader.ReadUInt16PrefixedAsciiString();
}
result.UniqueId = reader.ReadUInt32();
result.TriggerType = reader.ReadUInt16AsEnum <PolygonTriggerType>();
result.RiverStartControlPoint = reader.ReadUInt32();
if (version >= 5)
{
result.RiverTexture = reader.ReadUInt16PrefixedAsciiString();
result.NoiseTexture = reader.ReadUInt16PrefixedAsciiString();
result.AlphaEdgeTexture = reader.ReadUInt16PrefixedAsciiString();
result.SparkleTexture = reader.ReadUInt16PrefixedAsciiString();
result.BumpMapTexture = reader.ReadUInt16PrefixedAsciiString();
result.SkyTexture = reader.ReadUInt16PrefixedAsciiString();
result.UseAdditiveBlending = reader.ReadBooleanChecked();
result.RiverColor = reader.ReadColorRgb();
result.Unknown = reader.ReadByte(); // 0
if (result.Unknown != 0)
{
throw new InvalidDataException();
}
result.UvScrollSpeed = reader.ReadVector2();
result.RiverAlpha = reader.ReadSingle();
}
var numPoints = reader.ReadUInt32();
result.Points = new MapVector3i[numPoints];
for (var i = 0; i < numPoints; i++)
{
result.Points[i] = MapVector3i.Parse(reader);
}
return(result);
}
internal void Load(SaveFileReader reader)
{
reader.ReadVersion(1);
var numPoints = reader.ReadUInt32();
if (numPoints != Points.Length)
{
throw new InvalidDataException();
}
for (var i = 0; i < numPoints; i++)
{
Points[i] = MapVector3i.Parse(reader.Inner);
}
var topLeft = reader.ReadPoint2D();
var bottomRight = reader.ReadPoint2D();
Bounds = Rectangle.FromCorners(topLeft, bottomRight);
// The following value is what you get if you do this calculation:
// width = (bottomRight.X - topLeft.X) * 0.5
// height = (bottomRight.Y + topLeft.Y) * 0.5
// value = sqrt(width * width + height * height)
//
// This looks like it's supposed to be a radius for this polygon trigger,
// presumably used for quick distance tests prior to testing if
// a point is inside the actual polygon.
//
// But there's a mistake... the height should instead be:
// height = (bottomRight.Y - topLeft.Y) * 0.5
//
// As it is, this "radius" is significantly larger than it should be.
var _ = reader.ReadSingle();
Radius = MathF.Sqrt(Bounds.Width * Bounds.Width + Bounds.Height * Bounds.Height);
var unknown = reader.ReadBoolean();
if (unknown)
{
throw new InvalidDataException();
}
}
internal static PolygonTrigger Parse(BinaryReader reader, ushort version)
{
var name = reader.ReadUInt16PrefixedAsciiString();
string layerName = null;
if (version == 4)
{
layerName = reader.ReadUInt16PrefixedAsciiString();
}
var uniqueId = reader.ReadUInt32();
var triggerType = reader.ReadUInt16AsEnum <PolygonTriggerType>();
var riverStartControlPoint = reader.ReadUInt32();
var numPoints = reader.ReadUInt32();
var points = new MapVector3i[numPoints];
if (riverStartControlPoint > numPoints - 1)
{
throw new InvalidDataException();
}
for (var i = 0; i < numPoints; i++)
{
points[i] = MapVector3i.Parse(reader);
}
return(new PolygonTrigger
{
Name = name,
LayerName = layerName,
UniqueId = uniqueId,
TriggerType = triggerType,
RiverStartControlPoint = riverStartControlPoint,
Points = points
});
}
