Content for everyone

• Overview over the releases and variants of the game
• Extracted content:
  • All pictures
  • Music
  • Mouse cursors
• Hidden/Unused stuff -- coming soon
  • Unused pictures -- coming soon
  • Unused sounds -- coming soon
  • Unused videos -- coming soon

Technical stuff

• How to disassemble
• Analysis of the ART files
  • Artfile variants
  • Packer/Unpacker written in C
  • All original ART files
  • Statistics
• Statistic of the used codecs in the game
• Analysis of the IPMA codec
• Analysis of ANIMDLL.DLL
• Technology overview

Links

• Mobygames.com
• At The Cutting Room Floor -- coming soon

ANIMDLL.dll

Version 1a (download, full disasm)

BA Retail versions:
1994-10-05 14:32:34
Size: 1686 bytes
MD5 sum: fa91c98711e5d6ba89b5d0cfa438874a

Initial version with the following functions:

• TIMERDLL_PROC: Possibly a TIMERPROC as required by the WinAPI function SetTimer, listens to nIDEvent = 'ANIM'.
• TIMERDLL_TEST: Only displays a message box "Test Running" with caption "AnimDLL16" and does nothing else.
• LOAD_SOUND: Loads a sound file and returns a memory handle
• UNLOAD_SOUND: Unloads a sound identified by a memory handle
• PLAY_SOUND: Plays a sound identified by a memory handle
• OPEN_IPMA_DLL: Opens the codec
  ANIMDLL.OPEN_IPMA_DLL(arg0) calls
  MSVIDEO.ICOPEN(fccType=mmioMAKEFOURCC('v','i','d','c'), fccHandler=mmioMAKEFOURCC('I','P','M','A'), wMode=ICMODE_DECOMPRESS) followed by
  MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=arg0, dw=22h).
  arg0 is the configuration data block for the message ICM_SETSTATE and 22h is the size of this configuration data block.
• CLOSE_IPMA_DLL: Closes the codec
  ANIMDLL.CLOSE_IPMA_DLL(arg0) calls
  MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=arg0, dw2=22h) followed by
  MSVIDEO.ICCLOSE(hic).
  arg0 is the configuration data block for the message ICM_SETSTATE and 22h is the size of this configuration data block.
• TEST_VIDEO_DLL: Checks if the codecs "IV32" (requires Video for Windows) and "IPMA" (requires game setup) are installed.
• WEP is the Windows Exit Procedure. It just returns the value 1.

Version 1b (download, full disasm)

BA Demo and Special Edition:
1994-11-29 15:44:00
Size: 1646
MD5 sum: 4c93de0157eb5ba9c42bf290249a2c3c

This DLL is fully compatible with the retail version and has small improvements. Therefore it should be used instead of the original DLL of October 1994.

Modified functions:

• UNLOAD_SOUND
  • Returns AX<>0 if there was something available to unload, instead of always returning AX=0 (This bugfix also applies for the Retail version, because 1 of the 2 calls is actually checking eax<>0 for success, according to the disassembly. However, this fix might lead to the error message "Could not unload sound" in case there is a bug in BlownAway, i.e. a wrong reference)
• PLAY_SOUND
  • The flag "SND_NODEFAULT" was added to the function call MMSYSTEM.SNDPLAYSOUND, which means if the sound cannot be found, PlaySound returns silently without playing the default sound. (It is very likely that this is a bugfix that would also be useful for the retail BA)

Version 2 (download, full disasm)

Panic in the Park + Waldo 1:
1995-05-10 17:14
Size: 1796 bytes
MD5 sum: 4dd2c6453cb3d5a7fb8a2b7e848a42f2

This DLL is NOT compatible with Blown Away and vice versa!

Modified functions:

• LOAD_SOUND
  1. Argument added: BOOL bShowLoadErrorMessage that defines if message "Could not load sound" is shown
• OPEN_IPMA_DLL
  1. Argument added: DWORD fccHandler that gets passed to MSVIDEO.ICOPEN instead of the hardcoded "IPMA"
  2. The compressor will receive
     MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=argument, dw2=3Ah) instead of
     MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=argument, dw2=22h)
     So, the size of the configuration data block of message MSVIDEO.ICSENDMESSAGE has been increased.
• CLOSE_IPMA_DLL
  1. The compressor will receive
     MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=argument, dw2=3Ah) instead of
     MSVIDEO.ICSENDMESSAGE(hic, msg=ICM_SETSTATE, dw1=argument, dw2=22h)
     So, the size of the configuration data block of message MSVIDEO.ICSENDMESSAGE has been increased.
• TEST_VIDEO_DLL
  1. Argument added: DWORD fccHandlerSecondary that gets passed to MSVIDEO.ICOPEN if checkmode bit 2 is set
  2. Argument added: DWORD dwCheckMode to control wheather IV32 gets checked or not
  3. Previous behavior: The function checked the codecs vidc:IV32 and then vidc:IPMA.
     New behavior:
     If dwCheckMode=0, then return 1.
     Else if mode bit #2 set, then check codecs vidc:IV32 and vidc:"X" (where "X" is the codec of argument fccHandlerSecondary)
     Else check only vidc:IV32.
     If codecs fail to load: Show message box and return 0. Otherwise return 1.

New functions (stubs that always return 0):

• INIT_FLI: Unknown usage.
• END_FLI: Unknown usage.
• PLAY_FLI: Unknown usage.
• STATUS_FLI: Unknown usage.
• STOP_FLI: Unknown usage.

C-style Headers

// TODO: Return values unknown
// TODO: Order of arguments and calling convention unknown

// PIP = "Panic in the Park"
// otherwise, "Blown Away"
#define PIP

typedef tagIPMA_CONFIG_DATA {
	DWORD fccSignature; // "SUGR" set by game. Can also be "IPMA"
	#ifdef PIP
	// Unknown data structure. Size: 3Ah (including signature)
	#else
	// Unknown data structure. Size: 22h (including signature)
	#endif
} IPMA_CONFIG_DATA;

// Possibly a TIMERPROC as required by the WinAPI function SetTimer, listens to nIDEvent = 'ANIM'.
VOID CALLBACK TIMERDLL_PROC(HWND hWnd, UINT uMsg, UINT_PTR nIDEvent, DWORD dwTime);

// Only displays a message box "Test Running" with caption "AnimDLL16" and does nothing else.
// Returns the result of MessageBox()
int FAR PASCAL TIMERDLL_TEST();

// Loads a sound file and returns a memory handle
#ifdef PIP
HGLOBAL FAR PASCAL LOAD_SOUND(LPSTR pszFileName, BOOL bShowErrorMsg);
#else
HGLOBAL FAR PASCAL LOAD_SOUND(LPSTR pszFileName);
#endif

// Unloads a sound identified by a memory handle
WORD? FAR PASCAL UNLOAD_SOUND(HGLOBAL hMem);

// Plays a sound identified by a memory handle
WORD? FAR PASCAL PLAY_SOUND(HGLOBAL hMem, BOOL bLoop);

// Opens the codec
#ifdef PIP
WORD? FAR PASCAL OPEN_IPMA_DLL(IPMA_CONFIG_DATA* configData, DWORD fccHandler);
#else
WORD? FAR PASCAL OPEN_IPMA_DLL(IPMA_CONFIG_DATA* configData);
#endif

// Closes the codec
WORD? FAR PASCAL CLOSE_IPMA_DLL(DWORD dwSendMessageDw1);

// Checks if the codecs "IV32" (requires Video for Windows) and "IPMA" (requires game setup) are installed.
#ifdef PIP
#define CHECKMODE_VFW 1
#define CHECKMODE_SECONDARY 2
#define CHECKMODE_BOTH CHECKMODE_VFW|CHECKMODE_SECONDARY
BOOL FAR PASCAL TEST_VIDEO_DLL(DWORD dwCheckMode, DWORD fccHandlerSecondary);
#else
BOOL FAR PASCAL TEST_VIDEO_DLL();
#endif

#ifdef PIP
// Unknown usage. It always returns 0.
WORD? FAR PASCAL INIT_FLI();

// Unknown usage. It always returns 0.
WORD? FAR PASCAL END_FLI();

// Unknown usage. It always returns 0.
WORD? FAR PASCAL PLAY_FLI(WORD unknown1, WORD unknown2);

// Unknown usage. It always returns 0.
WORD? FAR PASCAL STATUS_FLI(WORD unknown1);

// Unknown usage. It always returns 0.
WORD? FAR PASCAL STOP_FLI(WORD unknown1);
#endif

// WEP is the Windows Exit Procedure.
// It always returns the value 1.
WORD? FAR PASCAL WEP(BOOL fSystemExit);