94 lines
2.2 KiB
Plaintext
94 lines
2.2 KiB
Plaintext
unit Tileset;
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interface
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uses Map, Classes, Dialogs, SysUtils, Graphics;
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type
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TTilesetHeader = packed record
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BankNumber: Byte;
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TilesetArrangementPointer: Word;
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TilesetGraphicsPointer: Word;
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UnknownData: array [0..6] of Byte;
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end;
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var
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//Palette: array [0..3] of TColor = (clWhite,clLtGray,clDkGray,clBlack);
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//Palette: array [0..3] of TColor = ($F8E8F8, $A8E058, $A0D0F8, $181010);
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Palette: array [0..3] of TColor = ($F8E8F8, $58E0A8, $F8D0A0, $101018);
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RawMapPalettes: array [0..12, 0..3] of Word;
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const Zero: Byte = 0;
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function GetTilesetHeader(TilesetNumber: Byte): TTilesetHeader;
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function WordToColor(Value: Word): TColor;
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procedure ReadTilesetGraphics(TilesetHeader: TTilesetHeader; Bmp: TBitmap);
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procedure ReadMapPallets;
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implementation
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uses MapEditor;
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function GetTilesetHeader(TilesetNumber: Byte): TTilesetHeader;
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begin
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Rom.Position := $C7BE + ((TilesetNumber) * SizeOf(TTilesetHeader));
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Rom.Read(Result, SizeOf(TTilesetHeader));
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end;
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function WordToColor(Value: Word): TColor;
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var
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R,G,B: Byte;
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begin
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R := Round((((Value shr 00) and 31) / 31) * 255);
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G := Round((((Value shr 05) and 31) / 31) * 255);
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B := Round((((Value shr 10) and 31) / 31) * 255);
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Result := R or (G shl 8) or (B shl 16);
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end;
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//reads tile from Stream into Bmp and uses colors from Pal
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procedure ReadTile(Stream: TStream; Bmp: TBitmap);
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var
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X,Y: Integer;
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Data1,Data2: Byte;
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begin
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for Y := 0 to 7 do
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begin
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Stream.Read(Data1,1);
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Stream.Read(Data2,1);
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for X := 0 to 7 do
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Bmp.Canvas.Pixels[X,Y] := Palette[((Data1 shr (7-X)) and 1) or (((Data2 shr (7-X)) and 1) shl 1)];
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end;
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end;
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//reads tileset at specific address into Bmp
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procedure ReadTilesetGraphics(TilesetHeader: TTilesetHeader; Bmp: TBitmap);
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var
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Tile: TBitmap;
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TileCnt: Byte;
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I: Integer;
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begin
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Tile := TBitmap.Create;
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Tile.PixelFormat := pf24bit;
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Tile.Width := 8;
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Tile.Height := 8;
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Rom.Position := GBPtrToFilePos(TilesetHeader.BankNumber, TilesetHeader.TilesetGraphicsPointer);
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TileCnt := 0;
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for I := 1 to 16 * 6 do
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begin
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ReadTile(Rom,Tile);
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Bmp.Canvas.Draw((TileCnt mod 16) * 8, (TileCnt div 16) * 8, Tile);
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Inc(TileCnt);
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end;
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end;
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procedure ReadMapPallets;
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begin
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Rom.Position := $72660;
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Rom.Read(RawMapPalettes, 8*12);
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end;
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end.
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