private ushort AnalyzeSentence(ByteAccess textSrc, ushort maxWidth, LineInfo[] line)
{
ushort lineNo = 0;
var text = new ByteAccess(textSrc.Data, textSrc.Offset);
var firstWord = true;
while (text.Offset < text.Data.Length && text[0] != 0)
{
ushort wordWidth = 0;
ushort wordLength = 0;
while (text.Offset < text.Data.Length && (text[0] != ' ') && text[0] != 0)
{
wordWidth = (ushort)(wordWidth + CharWidth(text[0]) - Overlap);
wordLength++;
text.Offset++;
}
if (text.Offset < text.Data.Length && text[0] == ' ')
text.Offset++;
wordWidth += Overlap; // no overlap on final letter of word!
if (firstWord)
{ // first word on first line, so no separating SPACE needed
line[0].Width = wordWidth;
line[0].Length = wordLength;
firstWord = false;
}
else
{
// see how much extra space this word will need to fit on current line
// (with a separating space character - also overlapped)
var spaceNeeded = (ushort)(_joinWidth + wordWidth);
if (line[lineNo].Width + spaceNeeded <= maxWidth)
{
line[lineNo].Width += spaceNeeded;
line[lineNo].Length = (ushort)(line[lineNo].Length + 1 + wordLength); // NB. space+word characters
}
else
{ // put word (without separating SPACE) at start of next line
lineNo++;
Debug.Assert(lineNo < MaxLines);
line[lineNo].Width = wordWidth;
line[lineNo].Length = wordLength;
}
}
}
return (ushort)(lineNo + 1); // return no of lines
}
public void MakeTextSprite(byte slot, ByteAccess text, ushort maxWidth, byte pen)
{
var lines = new LineInfo[MaxLines];
var numLines = AnalyzeSentence(text, maxWidth, lines);
ushort sprWidth = 0;
ushort lineCnt;
for (lineCnt = 0; lineCnt < numLines; lineCnt++)
if (lines[lineCnt].Width > sprWidth)
sprWidth = lines[lineCnt].Width;
var sprHeight = (ushort)(_charHeight * numLines);
var sprSize = (uint)(sprWidth * sprHeight);
Debug.Assert(_textBlocks[slot] == null); // if this triggers, the speechDriver failed to call Text::releaseText.
_textBlocks[slot] = new FrameHeader(new byte[sprSize + FrameHeader.Size]);
Array.Copy(new[] { (byte)'N', (byte)'u', (byte)' ', (byte)' ' }, 0, _textBlocks[slot].runTimeComp.Data, _textBlocks[slot].runTimeComp.Offset, 4);
_textBlocks[slot].compSize = 0;
_textBlocks[slot].width = _resMan.ReadUInt16(sprWidth);
_textBlocks[slot].height = _resMan.ReadUInt16(sprHeight);
_textBlocks[slot].offsetX = 0;
_textBlocks[slot].offsetY = 0;
var linePtr = new ByteAccess(_textBlocks[slot].Data.Data, _textBlocks[slot].Data.Offset + FrameHeader.Size);
linePtr.Data.Set(linePtr.Offset, NoCol, (int)sprSize);
for (lineCnt = 0; lineCnt < numLines; lineCnt++)
{
var sprPtr = (sprWidth - lines[lineCnt].Width) / 2; // center the text
for (ushort pos = 0; pos < lines[lineCnt].Length; pos++)
{
sprPtr += CopyChar(text[0], new ByteAccess(linePtr.Data, linePtr.Offset + sprPtr), sprWidth, pen) - Overlap;
text.Offset++;
}
text.Offset++; // skip space at the end of the line
if (SystemVars.Platform == Platform.PSX) //Chars are half height in psx version
linePtr.Offset += _charHeight / 2 * sprWidth;
else
linePtr.Offset += _charHeight * sprWidth;
}
}