///<summary>Loader of txt levelset (filename, simplified loading for fast update)</summary>
public FunctionResult LoadTxtLevelSet(string sFileName, bool bSimplified)
{
System.IO.StreamReader hReader;//For reading file
try
{
hReader = new System.IO.StreamReader(sFileName);//Open file
}
catch
{
return FunctionResult.FailedToOpenFile;//Unable
}
Reset();//Reset levelset
string sLine, sTrim;
string sLastNotEmpty="";
char[] sChars;
int i,j;
int iPos, iEnd;
int iCommentPhase;//Comment phase: 0 - before comments block found, 1 - inside, 2 - after
SokoCell uNewCell;
try
{
sTitle = System.IO.Path.GetFileNameWithoutExtension(sFileName);//Assing initial title (would be replaced by title from file, if specified)
}
catch
{
return FunctionResult.FileSystemError;//Something very wrong with filename
}
ArrayList uXSizeList = new ArrayList(20);
ArrayList uYSizeList = new ArrayList(20);
ArrayList uPosList = new ArrayList(20);
ArrayList uFileLines = new ArrayList(100);
//Stag 1. Estimate level number and their sizes
int iPhase = 0;
iLevelsNum = 0;
iCommentPhase = 0;
int iX = 0; int iY = 0;
while (!hReader.EndOfStream) //Read till end of file
{
try
{
sLine = hReader.ReadLine(); //Read one line of file
}
catch
{
return FunctionResult.ErrorOnReadingFile;//Something wrong with file
}
uFileLines.Add(sLine);//Store line into array
sTrim = sLine.Trim();
if (sTrim.StartsWith("#"))
{//All lines, that starts with # are lines of level board
if (iPhase != 2)
{//Level was not yet started
iLevelsNum++;//Start level
uPosList.Add(uFileLines.Count-1);//Remeber line, where level starts
iPhase = 2;//Now we loading level
iX = 0;//Initial sizes
iY = 0;
}
iY++;//New line for level
if (iX < sLine.Length) iX = sLine.Length;//Update width of level, if needed
}
else
{//All lines, that not starts with # are delimits levels from each other
if (iPhase == 0)
{ //Header of levelset
try
{ //Try to get values from comments (comparisons should be in increment-len order, otherwise exception may occurs earlier, than line will be found)
if (sTrim.Substring(0, 6) == "Name: ")
{
sTitle = sTrim.Substring(6);
sTrim = "";
}
else if (sTrim.Substring(0, 7) == "Title: ")
{
sTitle = sTrim.Substring(7);
sTrim = "";
}
else if (sTrim.Substring(0, 8) == "Author: ")
{
sAuthor = sTrim.Substring(8);
sTrim = "";
}
else if (sTrim.Substring(0, 8) == "Comment:")
{
sComment = "";
if (sTrim.Length > 8)
sComment = sTrim.Substring(8).Trim();//Line contain text after "Comment:", so it is single-line comment
else
iCommentPhase = 1;//Line do not contain other text, so it is multi-line comment
sTrim = "";
}
else if (sTrim.Substring(0, 11) == "Copyright: ")
{
sCopyright = sTrim.Substring(11);
sTrim = "";
}
else if (sTrim.Substring(0, 11) == "Comment-End")
{//End of multi-line comment
iCommentPhase = 2;
sTrim = "";
}
}
catch (ArgumentOutOfRangeException)
{
//If line is very short, substring will throw exception. We bury such exceptions here :)
}
if (iCommentPhase == 1)
{ //Multiline comment continuing
if (sComment.Length > 0)
sComment += "\r\n";//Not first line, add line delimiter
sComment += sTrim;
sTrim = "";
}
if (sTrim.Length > 0)
{ //Line is still not identified
if (iCommentPhase == 0)
{ //All lines before comment block could be comment
if (sComment.Length > 0)
sComment += "\r\n";//Not first line, add line delimiter
sComment += sTrim;
}
sLastNotEmpty = sTrim;//Store line, it could be title for first level
}
}
if (iPhase == 2)
{ //Level was ended
uXSizeList.Add(iX);//Add sizes of level into arrays
uYSizeList.Add(iY);
iPhase = 3;//Now we waiting next level
}
}
}
if (iPhase == 2)
{ //Last level was not fully ended, end it here
uXSizeList.Add(iX);
uYSizeList.Add(iY);
}
hReader.Close();//Close file
if (iLevelsNum == 0)
return FunctionResult.NoLevelsFound;//No levels found in file
//Stage 2. Loading all detected levels
iLevelsAllocated = iLevelsNum;//Now we know exact number of levels
uLevels = new SokobanLevel[iLevelsAllocated];//Allocate array of levels
for (i = 0; i < iLevelsNum; i++) //Iterate for all levels
{
//Create new level with sizes, calculated in stage 1
uLevels[i] = new SokobanLevel((int)uXSizeList[i], (int)uYSizeList[i]);
if (bSimplified) continue;//Simplified loading - skip decoding levels (for fast updating list of levelsets, level contructor above required to load record file and calculate number of solved levels)
//uLevels[i].sTitle = "unnamed level " + (i + 1).ToString();//Initial level title
uLevels[i].sTitle = ""; //void level title
iPos = (int)uPosList[i];//Restore line number, where level starts
//Choose where we should end loading level
if (i<(iLevelsNum-1))
iEnd = (int)uPosList[i + 1]; //Not last level - up to first line of previous level
else
iEnd = uFileLines.Count; //Last level - up to last line of level
iPhase = 1;//Initial phase - comment before level
iCommentPhase = 0;
iY = 0;
//uNewCell = SokoCell.Background;
while (iPos < iEnd)//Iterate thru all lines of level board
{
sLine = (string)uFileLines[iPos]; iPos++;//Restore line from array
sTrim = sLine.Trim();//Trim whitespaces
if (sTrim.StartsWith("#"))
{ //All lines that starts with # are lines of level
if (iPhase == 1)
{ //Get title from last unidentified line
uLevels[i].sTitle = sLastNotEmpty;
}
if (iPhase == 3)
{ //Level board already was loaded, it cannot start second time
break;//Exit from loading this level
}
iPhase = 2;//Now we loading level
sChars = sLine.ToCharArray();//Get chars of string
iX = 0;//Start new line
for (j = 0; j < sChars.Length; j++)//Iterate thru all chars
{
switch (sChars[j])//Decore char into cell of level
{
case '#': uNewCell = SokoCell.Wall; break;
case ' ': uNewCell = SokoCell.Empty; break;
case '.': uNewCell = SokoCell.Target; break;
case '$': uNewCell = SokoCell.Box; break;
case '@': uNewCell = SokoCell.Player; break;
case '*': uNewCell = SokoCell.BoxOnTarget; break;
case '+': uNewCell = SokoCell.PlayerOnTarget; break;
default: continue;//Unknown - skipped
}
uLevels[i].SetCell(iX, iY, uNewCell);//Put cell into level
iX++;//Advance to next cell
}
iY++;//Advance to next line
}
else
{ //All lines, that not starts with # are delimits levels from each other
if (iPhase == 2)//If level just ends
sLastNotEmpty = "";//Forgot all previous unidentified lines
iPhase = 3;//Now we are after level board
try
{ //Try to get values from comments (comparisons should be in increment-len order, otherwise exception may occurs earlier, than line will be found)
if (sTrim.Substring(0, 7) == "Title: ")
{
uLevels[i].sTitle = sTrim.Substring(7);
sTrim = "";
}
else if (sTrim.Substring(0, 8) == "Author: ")
{
uLevels[i].sAuthor = sTrim.Substring(8);
sTrim = "";
}
else if (sTrim.Substring(0, 8) == "Comment:")
{
if (sTrim.Length > 8)
uLevels[i].sComment = sTrim.Substring(8).Trim();//Line contain text after "Comment:", so it is single-line comment
else
iCommentPhase = 1;//Line do not contain other text, so it is multi-line comment
sTrim = "";
}
else if (sTrim.Substring(0, 11) == "Comment-End")
{ //Multi-line comment ends
iCommentPhase = 0;
sTrim = "";
}
}
catch (ArgumentOutOfRangeException)
{
//If line is very short, substring will throw exception. We bury such exceptions here :)
}
if (iCommentPhase == 1)
{ //Multiline comment continuing
if (uLevels[i].sComment.Length > 0)
uLevels[i].sComment += "\r\n";//Not first line, add line delimiter
uLevels[i].sComment += sTrim;
sTrim = "";
}
if (sTrim.Length > 0)
{ //Line is still not identified
sLastNotEmpty = sTrim;//Store line, it could be title for next level
}
}
}
if (uLevels[i].sTitle.Length <= 0)
{
uLevels[i].sTitle = "level " + (i+1).ToString();//Initial level title
}
uLevels[i].CleanUp();//Distinguish backgrounds from empty cells (both specified as spaces in file)
}
return FunctionResult.OK;//Level set successfully loaded
}
///<summary>Copy-constructor for creating temprorary levels (source level)</summary>
public SokobanGame(SokobanLevel uLevelToCopy)
{
iMovesAlloc = 0;
iReversAlloc = 0;
CopyFrom(uLevelToCopy);//Copy all data from source
//Flush player and box move trees
iMoveTreeFromX = -1; iMoveTreeFromY = -1;
iBoxMoveTreeFromX = -1; iBoxMoveTreeFromY = -1;
}
///<summary>Generate null level set - 1 random level</summary>
public FunctionResult GenNullLevelSet()
{
int i, j,k;
int iXsize, iYsize;
Random uRandom = new Random(Environment.TickCount);
Reset();//Reset levelset
sAuthor = "SokobanCompact";
sComment = "Randomly generated";
sCopyright = "";
sTitle = "null levelset";
sFileName = sNullName;
sID = sNullName;
sRecordFile = null;
iLevelsNum = 1;//1 level
iLevelsAllocated = iLevelsNum;
uLevels = new SokobanLevel[iLevelsAllocated];//Allocate array of levels
iXsize = 10;
iYsize = 10;
uLevels[0] = new SokobanLevel(iXsize, iYsize);
uLevels[0].sTitle = "null level";
uLevels[0].sAuthor = "SokobanCompact";
uLevels[0].sComment = "Randomly generated";
for (i = 0; i < iXsize; i++)
for (j = 0; j < iYsize; j++)
{
if (i==0 || j==0 || i==(iXsize-1) || j==(iYsize-1))
uLevels[0].SetCell(i, j, SokoCell.Wall);
else
uLevels[0].SetCell(i, j, SokoCell.Empty);
}
uLevels[0].SetCell(1, 1, SokoCell.Player);
k = 0;
do
{
i = uRandom.Next(2, iXsize - 2);
j = uRandom.Next(2, iYsize - 2);
if (uLevels[0].GetCell(i, j)!=SokoCell.Empty) continue;
uLevels[0].SetCell(i, j, SokoCell.Box);
k++;
} while (k < 10);
k = 0;
do
{
i = uRandom.Next(2, iXsize - 2);
j = uRandom.Next(2, iYsize - 2);
if (uLevels[0].GetCell(i, j)!=SokoCell.Empty) continue;
uLevels[0].SetCell(i, j, SokoCell.Target);
k++;
} while (k < 10);
return FunctionResult.OK;
}
