public override GameLevel GetLevel(int n)
{
if (n < 1 || n > levelCount)
{
throw new ArgumentException("Level outside of range");
}
GameLevel gameLevel = null;
try
{
int offset = GetLevelOffset(n);
chipDat.Seek(offset);
int numBytesLevel = chipDat.ReadUnsignedWord();
// So we don't have to skip over the same level again later
levelOffsets[n + 1] = offset + numBytesLevel + 2;
int levelNumber = chipDat.ReadUnsignedWord();
int numSeconds = chipDat.ReadUnsignedWord();
int numChipsNeeded = chipDat.ReadUnsignedWord();
int mapDetail = chipDat.ReadUnsignedWord();
gameLevel = new GameLevel(32, 32, numChipsNeeded, numSeconds, levelNumber);
int numberOfBytesLayer1 = chipDat.ReadUnsignedWord();
ReadLayer(gameLevel, numberOfBytesLayer1, 1); // Layer 1, upper
int numberOfBytesLayer2 = chipDat.ReadUnsignedWord();
ReadLayer(gameLevel, numberOfBytesLayer2, 0); // Layer 2, lower
int numBytesOptional = chipDat.ReadUnsignedWord();
int numOptionalBytesRead = 0;
while (numOptionalBytesRead < numBytesOptional)
{
int fieldType = chipDat.ReadUnsignedByte();
int sizeOfField = chipDat.ReadUnsignedByte();
numOptionalBytesRead += 2;
switch (fieldType)
{
case 0x03: // Map title
sbyte[] ASCIITitle = new sbyte[sizeOfField - 1];
chipDat.ReadFully(ASCIITitle);
string title = StringHelperClass.NewString(ASCIITitle, "ASCII");
gameLevel.MapTitle = title;
chipDat.SkipBytes(1);
break;
case 0x04: // Brown buttons to traps
for (int i = 0; i < sizeOfField / 10; i++)
{
int buttonX = chipDat.ReadUnsignedWord();
int buttonY = chipDat.ReadUnsignedWord();
int trapX = chipDat.ReadUnsignedWord();
int trapY = chipDat.ReadUnsignedWord();
// Locate button
BlockContainer bc = gameLevel.GetBlockContainer(buttonX, buttonY);
Block button = bc.Find(Type.BROWNBUTTON);
// Locate trap
bc = gameLevel.GetBlockContainer(trapX, trapY);
Block trap = bc.Find(Type.TRAP);
if (button != null && trap != null) // Perhaps throw an exception otherwise
{
Buttons.AddBrownButtonListener(button, trap);
}
chipDat.SkipBytes(2);
}
break;
case 0x05:
for (int i = 0; i < sizeOfField / 8; i++)
{
int buttonX = chipDat.ReadUnsignedWord();
int buttonY = chipDat.ReadUnsignedWord();
int clonerX = chipDat.ReadUnsignedWord();
int clonerY = chipDat.ReadUnsignedWord();
// Locate button
BlockContainer bc = gameLevel.GetBlockContainer(buttonX, buttonY);
Block button = bc.Find(Type.REDBUTTON);
// Locate cloner
bc = gameLevel.GetBlockContainer(clonerX, clonerY);
Block cloner = bc.Find(Type.CLONEMACHINE);
if (button != null && cloner != null) // Perhaps throw an exception otherwise
{
Buttons.AddRedButtonListener(button, cloner);
}
}
break;
case 0x06: // Password
string password = ReadPassword(sizeOfField);
gameLevel.Password = password;
passwordToLevel[password] = n;
levelToPassword[n] = password;
chipDat.SkipBytes(1);
break;
case 0x07: // Hint
sbyte[] ASCIIHint = new sbyte[sizeOfField - 1];
chipDat.ReadFully(ASCIIHint);
string hint = StringHelperClass.NewString(ASCIIHint, "ASCII");
gameLevel.Hint = hint;
chipDat.SkipBytes(1);
break;
case 0x0A: // Movement
for (int i = 0; i < sizeOfField / 2; i++)
{
int creatureX = chipDat.ReadUnsignedByte();
int creatureY = chipDat.ReadUnsignedByte();
Block creature = null;
BlockContainer bc;
Block upper;
// Locate creature
bc = gameLevel.GetBlockContainer(creatureX, creatureY);
upper = bc.Upper;
if (upper.Creature)
{
creature = upper;
}
if (creature != null) // Perhaps throw an exception otherwise
{
Creatures.AddCreature(creature);
}
}
break;
default:
chipDat.SkipBytes(sizeOfField);
break;
}
numOptionalBytesRead += sizeOfField;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
Debug.Write(ex.StackTrace);
Debug.WriteLine("While loading level: " + ex.Message);
}
return(gameLevel);
}