/// <summary>
/// Creates a sprite from an image file.
/// </summary>
/// <remarks>
/// If a sprite from the same image was already loaded
/// before it will return a new sprite from the SpriteData
/// in the cache.
/// </remarks>
/// <param name="ImageFile">The image file to create the sprite from</param>
/// <param name="offset">Offset, same as <see cref="Sprite.Offset"/>.</param>
/// <returns>A <see cref="Sprite"/>.</returns>
public static Sprite CreateFromImage(string ImageFile, Vector offset)
{
if(!SpriteDatas.ContainsKey(ImageFile)) {
Surface Surface = new Surface(ImageFile);
SpriteData Data = new SpriteData(Surface, offset);
SpriteDatas[ImageFile] = Data;
return new Sprite(Data);
}
return new Sprite(SpriteDatas[ImageFile]);
}
public SpriteData(Surface Surface, Vector offset)
{
Action Action = new Action("default", Surface);
Action.Offset = offset;
Actions.Add(Action.Name, Action);
}
public static byte[] Compress(string toCompress)
{
//then at the end of the function we're going to convert it to an array, and return it.
Vector<byte> result = new Vector<byte>();
//make an encoding table out of the huffman tree, out of a frequency table
Console.WriteLine("Making Huffman frequency table");
HashTable<char, int> FreqTable = MakeFrequencyTable(toCompress); //copy to memory because we access it multiple times
Console.WriteLine("Making Huffman tree");
Node huffmanTree = MakeHuffmanTree(FreqTable);
Console.WriteLine("Making Huffman encoding table");
HashTable<char, BitStream> encodingTable = MakeEncodingTable(huffmanTree, new BitStream()); // add to memory because accessed twice
//convert the size of the frequency table to bytes.
Console.WriteLine("Converting to bytes");
byte[] freqToByte = IntToBytes(FreqTable.Size);
//and all four bytes to the resuld linked list
Console.WriteLine("Adding bytes bytes");
result.AddRange(freqToByte);
//next loop through the frequency table
SLinkedList<char> list = FreqTable.Keys;
Console.WriteLine("looping through frequency table");
for (int i = 0; i < list.Size; i++) {
//convert current key to two bytes
byte[] key = CharToBytes(list[i]);
//add both bytes to the linked list
result.AddRange(key);
//convert the current value to foure bytes,
byte[] value = IntToBytes(FreqTable[list[i]]);
//add alll four bytes to the linked list
result.AddRange(value);
}//end loop
//make new bitstream (datastream) to hold bits
BitStream datastream = new BitStream();
//loop through the string
Console.WriteLine("Looping through input and adding to datastream");
for (int i = 0; i < toCompress.Length; i++) {
//append the bitstream of the encoding table to the newely created bitstream
datastream.Append(encodingTable[toCompress[i]]);
}//end loop
//get the bit streams bit count as an integer
int streamBitCount = datastream.BitCount;
//convert this integer to bytes and add it to the result list
Console.WriteLine("Converting bytes");
byte[] streambitByte = IntToBytes(streamBitCount);
result.AddRange(streambitByte);
Console.WriteLine("Copying Bytes");
result.AddRange(datastream.Bytes);
//finally convert the result list to a byte array.
Console.WriteLine("Convert results list to byte array");
byte[] byteResult = result.ToArray();
//return the array
return byteResult;
}
public void Draw(Vector pos)
{
gl.BindTexture(gl.TEXTURE_2D, texture.Handle);
gl.Begin(gl.QUADS);
gl.TexCoord2f(Left, Top);
gl.Vertex2f(pos.X, pos.Y);
gl.TexCoord2f(Right, Top);
gl.Vertex2f(pos.X + Width, pos.Y);
gl.TexCoord2f(Right, Bottom);
gl.Vertex2f(pos.X + Width, pos.Y + Height);
gl.TexCoord2f(Left, Bottom);
gl.Vertex2f(pos.X, pos.Y + Height);
gl.End();
}
public virtual void Draw(Vector pos)
{
if(CurrentAction == null || CurrentAction.Frames.Count == 0)
return;
float AnimationTime = (Timer.CurrentTime - ActionTimeOffset) * CurrentAction.Speed;
if(_NextAction != null && AnimationTime > (float) CurrentAction.Frames.Count) {
AnimationTime -= CurrentAction.Frames.Count;
AnimationTime /= CurrentAction.Speed;
CurrentAction = _NextAction;
_NextAction = null;
AnimationTime *= CurrentAction.Speed;
}
int AnimationFrame = ((int) AnimationTime) % CurrentAction.Frames.Count;
Surface Surface = CurrentAction.Frames[AnimationFrame];
Surface.Draw(pos - CurrentAction.Offset);
}
private int[] VectorToIntArray(Vector<double> vector)
{
return vector.Select(elem => (int)elem).ToArray();
}
