DevsArchive
commented
1 year ago Sonic CD's object layout format includes information for which time zone an object is placed in and a secondary subtype, neither of which are supported in Sonic 2. The time zone stuff could be worked around easily, IMO, but the secondary subtype isn't.
Using Ralakimus' disassembly, the levels seemingly refuse to convert fully. Here's the log:
Program: LevelConverter Build Date: 10/12/2021 18:23:20 OS Version: Microsoft Windows NT 6.2.9200.0 Log: Opening INI file "C:\Users\Owner\Downloads\sonic-cd-disassembly-main\sonic-cd-disassembly-main_SonLVL\SonLVL.ini"... Game type is SCD. Loading Present... Loading palette file "../Level/_Objects/Sonic/Data/Palette.bin"... Source: 0 Destination: 0 Length: 16 Loading 256x256 chunks from file "../Level/Palmtree Panic/Data/Chunks (Act 1 Present).bin", using compression Uncompressed... Loading 16x16 blocks from file "../Level/Palmtree Panic/Data/Blocks (Act 1 Present).nem", using compression Nemesis... Loading palette file "../Level/Palmtree Panic/Data/Palette (Present).bin"... Source: 0 Destination: 16 Length: 48 Loading palette file "../Level/_Objects/Sonic/Data/Palette.bin"... Source: 0 Destination: 0 Length: 16 Loading palette file "../Level/Palmtree Panic/Objects/Amy Rose/Data/Palette.bin"... Source: 0 Destination: 16 Length: 16 Loading palette file "../Level/Palmtree Panic/Data/Palette (Present).bin"... Source: 16 Destination: 32 Length: 32 Loading palette file "../Level/_Objects/Sonic/Data/Palette.bin"... Source: 0 Destination: 0 Length: 16 Loading palette file "../Level/_Objects/Level End/Data/Palette (Flower Capsule).bin"... Source: 0 Destination: 16 Length: 16 Loading palette file "../Level/Palmtree Panic/Data/Palette (Present).bin"... Source: 16 Destination: 32 Length: 32 Loading FG layout from file "../Level/Palmtree Panic/Data/Foreground (Act 1 Present).bin", using compression Uncompressed... Loading palette file "../Level/_Objects/Sonic/Data/Palette.bin"... Source: 0 Destination: 0 Length: 16 Loading palette file "../Level/Palmtree Panic/Data/Palette (Present, Prototype).bin"... Source: 0 Destination: 16 Length: 48 Loading 8x8 tiles from file "../Level/Palmtree Panic/Data/Tiles (Act 1 Present).nem", using compression Nemesis... Loading BG layout from file "../Level/Palmtree Panic/Data/Background (Act 1 Present).bin", using compression Uncompressed... Loading objects from file "../Level/Palmtree Panic/Data/Objects (Act 1).bin", using compression Uncompressed... Loading start position "Level Start" from file "../Level/Palmtree Panic/Data/Start Position (Act 1 Present).bin"... Level loaded in 0.084902 second(s). System.InvalidCastException: Unable to cast object of type 'SonicRetro.SonLVL.API.SCD.SCDObjectEntry' to type 'SonicRetro.SonLVL.API.S2.S2ObjectEntry'. at SonicRetro.SonLVL.LevelConverter.MainForm.ConvertLevel() in D:\Programs\SonLVL\LevelConverter\MainForm.cs:line 815 at SonicRetro.SonLVL.LevelConverter.MainForm.button1_Click(Object sender, EventArgs e) in D:\Programs\SonLVL\LevelConverter\MainForm.cs:line 107 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)