reading nds icon

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Socoder -> Blitz -> reading nds icon
Sun, 20 Apr 2008, 18:09
spinal	I did this a while ago, so im putting it here before i loose it.. ndsfile=ReadFile("_menu_2.nds") Dim filearray(2112) iconlocation=$068 SeekFile(ndsfile,$068) offset=ReadInt(ndsfile) Print offset SeekFile(ndsfile,offset+832) ; t+832 = english title Repeat filearray(t)=ReadByte(ndsfile) t=t+1 Until Eof(ndsfile) Or t=255 x=0: y=4 For t=0 To 255 Step 2 ;title is padded to 128 char or 256 bytes b1=filearray(t) b2=filearray(t+1) temp= makeint(0,0,b2,b1,0) If t<32 Then Print " "+temp If temp=10 Then x=0 y=y+1 Else If temp<>0 Then Text x10,y13, Chr$(temp) x=x+1 If x>=41 Then x=0 y=y+1 End If End If Next ; Try to read the palette Dim palette(16) SeekFile(ndsfile,offset+544) ; t+544 = icon palette t=0 Repeat filearray(t)=ReadByte(ndsfile) t=t+1 Until Eof(ndsfile) Or t=32 ;Graphics 640,480,1,0 For t=0 To 15 b1=filearray(t2) b2=filearray(t2+1) temp= makeint(0,0,b2,b1,0) palette(t)= temp r=(temp And $1f)Shl 3 g=((temp Shr 5) And $1f)Shl 3 b=((temp Shr 10) And $1f)Shl 3 ; Color r,g,b ; Rect t8,0,7,7,1 Next ;icon data ;Dim picture(512) t=0 SeekFile(ndsfile,offset+32) ; t+32 = icon pixels (4bit) Repeat filearray(t)=ReadByte(ndsfile) t=t+1 Until Eof(ndsfile) Or t=512 CloseFile ndsfile ; we dont need the file open anymore t=0: x1=0:y1=0 x=0:y=0 For yy=0 To 3 For xx=0 To 3 x=0:y=0 While y<8 c2=palette((filearray(t) Shr 4) And $f) ; first 4 bits c1=palette(filearray(t) And $f) ; second 4 bits t=t+1 ; convert To r,g,b for plotting r1=(c1 And $1f)Shl 3 g1=((c1 Shr 5) And $1f)Shl 3 b1=((c1 Shr 10) And $1f)Shl 3 r2=(c2 And $1f)Shl 3 g2=((c2 Shr 5) And $1f)Shl 3 b2=((c2 Shr 10) And $1f)Shl 3 ;Plot Color r1,g1,b1 Plot (xx8)+x,yy8+y+20 Color r2,g2,b2 Plot (xx8)+x+1,yy*8+y+20 x=x+2 If x=8 Then x=0:y=y+1 Wend Next Next WaitKey() End ; convert 8bit pt to 4 8bit numbers to a single 32bit int Function MakeInt( b1,b2,b3,b4,Reverse=0 ) If Reverse=0 Then Return ( b1 Shl 24 )+( b2 Shl 16 )+( b3 Shl 8 )+( b4 ) If Reverse=1 Then Return ( b4 Shl 24 )+( b3 Shl 16 )+( b2 Shl 8 )+( b1 ) End Function --v If anyone wants to use it, feel free. But I dont think anyone here really wants to read an icon from a .nds file anyway. -=-=- Check out my excellent homepage!