//Untested
/// <summary>
/// Converts all needed information for saving a tile into a condensed form (16 bits).
/// </summary>
/// <param name="readFrom">A Single FloorTile to be serialized</param>
/// <returns>A 16-bit representation of the FloorTile. If Negative, the tile is disabled.</returns>
public static Int16 Serialize(ref FloorTile readFrom)
{
//Need to list order and usage of bits here.
// [10000000 00000000] - Enabled 0x80 = 10000000
// [01100000 00000000] - Tile Type (Floor, Hole, Fake Wall, Wall) 0x40 = 01000000
// [00010000 00000000] - Item Object (Vase, Chest, Dropped Items, Corpse, Etc)
// [00001000 00000000] - Monster Spawn
// [00000100 00000000] - Constant Floor Effect (Fire, etc.)
// [00000010 00000000] - Floor Decoration (Rocks, Debris, Bones, Etc)
// [00000001 00000000] - Yellow Wire
// [00000000 10000000] - Green Wire
// [00000000 01000000] - Blue Wire
// [00000000 00100000] - Red Wire
// [00000000 00011111] - Tile Theme (Placed at end for simple addition)
UInt16 temp = 0;
if (readFrom.Enabled)
{
temp = (UInt16)(temp | 0x8000); // 1000 0000
}
switch (readFrom.Type)
{
case TileType.FLOOR:
// Keep Default Value of 0 // 0000 0000
break;
case TileType.HOLE:
temp = (UInt16)(temp | 0x2000); // 0010 0000
break;
case TileType.ILLUSION_WALL:
temp = (UInt16)(temp | 0x4000); // 0100 0000
break;
case TileType.WALL:
temp = (UInt16)(temp | 0x6000); // 0110 0000
break;
default:
//Default to WALL
temp = (UInt16)(temp | 0x6000); // 0110 0000
break;
}
if (readFrom.ItemExists)
{
temp = (UInt16)(temp | 0x1000); // 0001 0000
}
if (readFrom.MonsterExists)
{
temp = (UInt16)(temp | 0x0800); // 0000 1000
}
if (readFrom.ConstantEffectExists)
{
temp = (UInt16)(temp | 0x0400); // 0000 0100
}
if (readFrom.DecorationExists)
{
temp = (UInt16)(temp | 0x0200); // 0000 0010
}
if (readFrom.YellowWire)
{
temp = (UInt16)(temp | 0x0100);
}
if (readFrom.GreenWire)
{
temp = (UInt16)(temp | 0x0080);
}
if (readFrom.BlueWire)
{
temp = (UInt16)(temp | 0x0040);
}
if (readFrom.RedWire)
{
temp = (UInt16)(temp | 0x0020);
}
// Should just add the Theme value to the variable, no need for a long switch statement or bit shifting
temp = (UInt16)(temp + (UInt16)readFrom.Theme);
return (Int16)temp; //Using a signed variable to assist determining if the tile is enabled or not
}
//Untested
public static FloorTile Deserialize(Int16 readFrom)
{
// [10000000 00000000] - Enabled 0x80 = 10000000
// [01100000 00000000] - Tile Type (Floor, Hole, Fake Wall, Wall) 0x40 = 01000000
// [00010000 00000000] - Item Object (Vase, Chest, Dropped Items, Corpse, Etc)
// [00001000 00000000] - Monster Spawn
// [00000100 00000000] - Constant Floor Effect (Fire, etc.)
// [00000010 00000000] - Floor Decoration (Rocks, Debris, Bones, Etc)
// [00000001 00000000] - Yellow Wire
// [00000000 10000000] - Green Wire
// [00000000 01000000] - Blue Wire
// [00000000 00100000] - Red Wire
// [00000000 00011111] - Tile Theme (Placed at end for simple addition)
FloorTile temp = new FloorTile();
Int16 tempRead;
// If Negative - thankfully casting doesn't change the sign bit
if (readFrom < 0)
{
temp.Enabled = true;
}
tempRead = (Int16)(readFrom & 0x6000);
switch (tempRead)
{
case 0x0000:
temp.Type = TileType.FLOOR;
break;
case 0x2000:
temp.Type = TileType.HOLE;
break;
case 0x4000:
temp.Type = TileType.ILLUSION_WALL;
break;
case 0x6000:
temp.Type = TileType.WALL;
break;
default:
temp.Type = TileType.WALL;
// Throw a console error
Console.Out.WriteLine("FloorTile.cs::Deserialize(Int16 readFrom) -- Impossible Error, TileType doesn't exist");
break;
}
// From this point on, I'm trying to decide if just bitshifting would be quicker or not.
// Possible performance gain in this function.
temp.ItemExists = (readFrom & 0x1000) != 0 ? true : false;
temp.MonsterExists = (readFrom & 0x0800) != 0 ? true : false;
temp.ConstantEffectExists = (readFrom & 0x0400) != 0 ? true : false;
temp.DecorationExists = (readFrom & 0x0200) != 0 ? true : false;
temp.YellowWire = (readFrom & 0x0100) != 0 ? true : false;
temp.GreenWire = (readFrom & 0x0080) != 0 ? true : false;
temp.BlueWire = (readFrom & 0x0040) != 0 ? true : false;
temp.RedWire = (readFrom & 0x0020) != 0 ? true : false;
tempRead = (Int16)(readFrom & 0x001F);
temp.Theme = (TileTheme)tempRead;
return temp;
}
