Developed by Blitz Games (formerly known as Interactive Studios Limited) in 2000 as a cross platform action adventure game based on the movie with the same name.
Throughout the engine you will find referenced to the acronym isl (Interactive Studios Limited) e.g islfile, islfont etc.
On Dreamcast each act has its own folder each with its own .BFF and .SPT and some containing region specific .SBB/.SBH files. On PC each act also has its own folder plus the addition of .WAB files accompaning the .BFF and .SPT files. On PS1 the layout is completely different, presumably the data is compressed in CRTEST.DAT. it also contains a file called DUMMY which just contains padding 00 bytes.
There is a very helpful comment at the top of the bff_load.c file which explains what BFF files are:
Quickie guide to BFF files:-
A BFF is, simply, a collection of data segments, prefixed by a TYPE, a SIZE, and an ID (the CRC of a name)
Data of many different types can just be shoved together into one file.
After loading, the program scans through the list, checks the type of each segment, and calls a "link" routine
for that type, which basically fills in any required pointers.
Then there's a little routine saying "find a bff segment of "such&such type, with this name-CRC"
In the header file it also mentions:
// All the types of object that you stick into a BFF need to start with a standard header
// which allows the BFF routines to seek out specific objects on request.
// "id" is long something like "PSA0" or "COL1" for PSA and collision data,
// for identifying the TYPE of the block it is.
// "len" is the length of the block, including the header.
// "crc" is the CRC of the name of this specific entry, to distinguish it from any
// other blocks of the same type.
typedef struct BFF_HeaderTag
{
unsigned long id;
unsigned long len;
unsigned long crc;
}BFF_Header;
Used for File streaming, seems to be used for both texture and sound streaming.
This is where the Chicken Run game data is stored on the PS1 version instead of the folder based layout of the PC and Dreamcast. It has a magic number of FLA2, not sure why, did they ever have a FLA1, what does FLA even stand for?
static char FILEIO_CDINDEX[64] = "\\CRTEST.DAT;1"; // "\\MYGAME.DAT;1"
#define FLA_MAGIC 0x32414c46 // Magic number 'FLA2' INTEL
Developers tend to reuse the same engine or parts of the same engine for multiple games across a wide range of platforms (one of the beenfits of writing in cross-patform C), which means there are other games that will share many of the same source files used in chicken run. Here is a list of games that have been referenced in the source code:
Most of the dreamcast specific code has a DCK_ prefix, presumable short for Dreamcast Katana (Katana was the code name for the dreamcast). Some example:
Presumably there were versions of this code with N64 and PS1 prefix used at ISL but they weren’t released with this source code unfortunetly. As most of the game code is cross platform but these files contain the very platform specific code for the Dreamcast.
So although it was originally compiled for PS1, all the sourcecode has been modified for the dreamcast version so it will need some modifications in order to compile for the playstation.
The following files won’t compile to PS1 without modification:
However the root/cr/source folder contails a makefile.mak which is for psyq and build the PS1 version.
There are a 2 linker files crtest.lnk and crdemo.lnk which are for the PS1 development tool PSYLINK.EXE you can find out more about there files here: http://www.retroreversing.com/ps1-psylink
These files are vital for piecing together the PS1 source code as it contains the exact specifications for the object files and libraries that were linked in to get the final and demo executables for the playstation.
As with most leaked source code there are some missing files these are:
Some of the source code for the game Chicken Run has been available to the internet as part of a “Dreamcast source code” bundle. After extracting the archive we are presented with two folders, “simple model shell” and “cr”.
Presumably cr stands for chicken run and the simple model shell is a tool to display some of the 3D models as they would appear in the game engine.
This tool would have been very useful for artists when exporting their models from their modelling software such as 3ds max or maya, as it will show what optimizations need to be made to the model.
| Filename | Description | Category |
|---|---|---|
| DCK_Maths.c | ||
| DCK_Maths.h | ||
| DCK_System.c | ||
| DCK_System.h | ||
| DCK_Texture.c | Texture handler rountines | |
| DCK_Texture.h | ||
| DCK_Types.h | ||
| actor2.c | ||
| actor2.h | ||
| bff_load.c | ||
| bff_load.h | ||
| crc32.c | ||
| crc32.h | ||
| fixed.c | ||
| fixed.h | ||
| gte.c | Gte playstation emulaution routines and structures | |
| include.h | ||
| islfile.c | ||
| islfont.c | font support - AM2 PS (c) 1999-2001 ISL (AM2 = Action Man 2 Destruction X for PS1) | |
| isltex.c | Texture and VRAM management | |
| islutil.c | ISL PSX LIBRARY (c) 1999 Interactive Studios Ltd. | |
| islutil.h | ||
| layout.c | ||
| layout.h | ||
| main.c | Main core routine and system initialisation - This file is part of Frogger II, Copyright 2000 Interactive Studios Ltd | |
| main.h | ||
| makefile | ||
| maths.c | This file is part of Frogger2, (c) 1999 Interactive Studios Ltd. | |
| maths.h | ||
| newpsx.c | ||
| newpsx.h | ||
| psi.c | Playstation Model (i) Handler - PSX CORE (c) 1999 ISL | |
| psi.h | ||
| psiactor.c | ||
| psiactor.h | Skinned model control routines | |
| psitypes.h | ISL PSX LIBRARY (c) 1999 Interactive Studios Ltd. | |
| quatern.c | ||
| quatern.h | PSX CORE (c) 1999 ISL | |
| sbinit.c | Copyright (C) 2000, Sega of America Dreamcast | |
| shell.c | ||
| shell.h | ||
| sonylibs.h | ||
| sprite.c | This file is part of Frogger2, (c) 1999 Interactive Studios Ltd. | |
| sprite.h | ||
| types.c | ||
| types.h | ||
| ultra64.h | n64 header (Copyright (C) 1994, Silicon Graphics, Inc.) |
We actually have multiple versions of the chicken run source code:
This was very common before good version control software such as git came along, so developers would work in seperate folders and merge changes, or keep different console ports in different folders.
The main files in cr are:
| Filename | Category | Description |
|---|---|---|
| DCK_Maths.c | ||
| DCK_Maths.h | ||
| DCK_System.c | ||
| DCK_System.h | ||
| DCK_Texture.c | ||
| DCK_Texture.h | ||
| DCK_Types.h | ||
| DC_TIM.c | ||
| DC_TIM.h | ||
| DISPSTR.C | ||
| DISPSTR.H | ||
| PSX_PC.h | ||
| USR.H | ||
| Usr.c | ||
| actor.c | ||
| actor.h | ||
| actor2.c | ||
| actor2.h | ||
| adxtest.c | ||
| adxtest.h | ||
| anim.c | ||
| anim.h | ||
| backup.c | ||
| backup.h | ||
| bff_load.c | ||
| bff_load.h | ||
| bpacsetup.c | ||
| bpacsetup.h | ||
| bpamsetup.c | ||
| bpamsetup.h | ||
| camera.c | ||
| camera.h | ||
| card.c | ||
| card.h | ||
| catapult.c | ||
| catapult.h | ||
| charactr.c | ||
| charactr.h | ||
| chase.c | ||
| chase.h | ||
| chicken.scr | ||
| chickenrun.cpj | ||
| cntrscn.c | ||
| cntrscreen.c | ||
| collide.c | ||
| collide.h | ||
| construct.c | ||
| construct.h | ||
| cr | ||
| cr.dsp | ||
| cr.dsw | ||
| cr.ncb | ||
| cr.opt | ||
| crate.c | Animation | Chase sequence featuring Mrs Tweedy hanging from the airplane |
| crate.h | ||
| crc32.c | ||
| crc32.h | ||
| credits.c | ||
| credits.h | ||
| curtains.c | ||
| curtains.h | ||
| cus_anim.c | ||
| cus_dyn.c | ||
| cus_full.c | ||
| custom.c | ||
| custom.h | ||
| custom2.c | ||
| dc_timer.c | ||
| dc_timer.h | ||
| dctext.xls | ||
| debris.c | ||
| debris.h | ||
| demo.c | ||
| demo.h | ||
| deth.c | ||
| deth.h | ||
| dogchase.c | ||
| dogchase.h | ||
| dualshock.c | ||
| dualshock.h | ||
| ectsmenu.c | ||
| ectsmenu.h | ||
| egglaying.c | ||
| egglaying.h | ||
| empty.c | ||
| empty.h | ||
| enemies.c | ||
| enemies.h | ||
| engine.c | ||
| engine.h | ||
| error.h | ||
| fireworks.c | ||
| fireworks.h | ||
| fixed.c | ||
| fixed.h | ||
| fma.c | ||
| fma.h | ||
| fx.c | ||
| fx.h | ||
| fxtest.c | ||
| fxtest.h | ||
| gallery.c | ||
| gallery.h | ||
| gametext.h | ||
| gametext.txt | ||
| global.h | ||
| gte.c | ||
| help.c | ||
| help.h | ||
| incbn | ||
| include.h | ||
| includeps | ||
| inventory.c | ||
| inventory.h | ||
| islcard.c | ||
| islfile.c | ||
| islfont.c | ||
| isllocal.c | ||
| islpad.c | ||
| islsfx2.c | ||
| isltex.c | ||
| islutil.c | ||
| islvideo.c | ||
| islxa.c | ||
| language.c | ||
| language.h | ||
| layout.c | ||
| layout.h | ||
| lcdicons.h | ||
| lev_flow.c | ||
| lev_flow.h | ||
| lights.c | ||
| lights.h | ||
| loading.h | ||
| loadlnd.h | ||
| loadsnd.c | ||
| loadsnd.h | ||
| main.c | ||
| main.h | ||
| makefile | ||
| map.c | ||
| map.h | ||
| map_draw.c | ||
| map_draw.h | ||
| map_play.c | ||
| map_play.h | ||
| map_view.c | ||
| map_view.h | ||
| maths.c | ||
| maths.h | ||
| menu.c | ||
| menu.h | ||
| mssccprj.scc | ||
| newpsx.c | ||
| newpsx.h | ||
| nme_dogs.c | ||
| nme_mrst.c | ||
| ok.h | ||
| options.c | ||
| options.h | ||
| overlay.h | ||
| overlay1.c | ||
| overlay2.c | ||
| overlays.c | ||
| overlays.h | ||
| pad.c | ||
| pad.h | ||
| particle.c | ||
| particle.h | ||
| pause.c | ||
| pause.h | ||
| platcoll.c | ||
| platform.c | ||
| platform.h | ||
| powerbar.c | ||
| powerbar.h | ||
| psi.c | ||
| psi.h | ||
| psiactor.c | ||
| psiactor.h | ||
| psitypes.h | ||
| puzzles.c | ||
| puzzles.h | ||
| quatern.c | ||
| quatern.h | ||
| ranges.h | ||
| route.c | ||
| route.h | ||
| saveicon.h | ||
| saving.h | ||
| sbinit.c | ||
| scenics.c | ||
| scenics.h | ||
| seesaw.c | ||
| seesaw.h | ||
| sfxtest.c | ||
| sfxtest.h | ||
| shell.c | ||
| shell.h | ||
| snapshot.c | ||
| snapshot.h | ||
| sonylibs.h | ||
| sound.c | ||
| sound.h | ||
| source | ||
| sprite.c | ||
| sprite.h | ||
| sprouts.c | ||
| sprouts.h | ||
| sptstream.c | ||
| sptstream.h | ||
| startup.c | ||
| startup.h | ||
| station.c | ||
| station.h | ||
| stilts.c | ||
| stilts.h | ||
| subgame.c | ||
| subgame.h | ||
| test.c | ||
| text_ids.h | ||
| timer.c | ||
| timer.h | ||
| types.c | ||
| types.h | ||
| ultra64.h | ||
| viewer.c | ||
| viewer.h | ||
| vmucheck.c | ||
| vmucheck.h | ||
| vssver.scc | ||
| wings.c | ||
| wings.h |
| Name | Category | Description |
|---|---|---|
| A2TS_STATEREF | ||
| A4TS_STATEREF | ||
| ACTORLIST | ||
| ACTOR_SHADOW | ||
| AM2_STREETSTR | ||
| ANIMATION | ||
| ANIM_ANIMATION | ||
| ANIM_DATA | ||
| ANIM_SEGMENT | ||
| BACKUPINFO | ||
| BFF_HeaderTag | ||
| BMP_HeaderInfoType | ||
| BMP_HeaderType | ||
| BMP_RGBType | ||
| BOUNDINGBOX | ||
| BOX | ||
| BYTEVECTOR | ||
| CARDSTR | ||
| CARD_HEADERSTR | ||
| CARD_SAVE_STR | ||
| CASEDATA | ||
| CASERECORD | ||
| CHARACTERINFO | ||
| CHARACTERVARSTR | ||
| COLLIDEBOUNDSTR | ||
| COLLSPHERE | ||
| COLL_PLAT_CACHE | ||
| COLOUR | ||
| CONSTRUCT_DATA | ||
| CONTROLMAP | ||
| CON_CAMERA | ||
| CON_CHICKEN | ||
| CON_MRTWEEDY_CAM | ||
| CON_RYTHM_DISPLAY | ||
| CricketScore | ||
| CurrentData | ||
| D2M_TMD_P_FG3I | ||
| D2M_TMD_P_FG4I | ||
| D2M_TMD_P_FT3I | ||
| D2M_TMD_P_FT4I | ||
| D2M_TMD_P_GT3I | ||
| D2M_TMD_P_GT4I | ||
| D2M_TMD_P_SP4I | ||
| DCKBYTEVECTOR | ||
| DCKFLOAT2DVECTOR | ||
| DCKSBYTEVECTOR | ||
| DCKSHORT2DVECTOR | ||
| DCKSHORTVECTOR | ||
| DCKVECTOR | ||
| DCTIMER | ||
| DEBRISSTR | ||
| DIRECT2MESH | ||
| DISPLAYABLETEXT | ||
| DUELVECTOR | ||
| EGGLAYING_CTRL | ||
| EL_CHICKEN | ||
| EL_EGG | ||
| EL_PANEL | ||
| ENEMYBFFLIST | ||
| ENEMYDEF | ||
| ENEMYGLOBALS | ||
| ENGINECTRL | ||
| FIREWORK_DATA | ||
| FIREWORK_SPARKS | ||
| FMA4_GT3 | ||
| FMA4_GT4 | ||
| FMACTRL | ||
| FMADATA | ||
| FMAOBJECT | ||
| FMAPLAYEDSTATUS | ||
| FMASTATUS | ||
| FMA_G3 | ||
| FMA_G4 | ||
| FMA_GT3 | ||
| FMA_GT4 | ||
| FMA_MESH_HEADER | ||
| FMA_WORLD | ||
| FMA_WORLD2 | ||
| FOG | ||
| FRAMELIST | ||
| FVECTOR | ||
| FX_PARTICLE | ||
| FX_PARTICLE_SYS | ||
| GETMATSTR | ||
| GamePlayDataType | ||
| GameSaveDataType | ||
| IQUATERNION | ||
| KEYFRAME | ||
| KEYFRAMESHORT | ||
| LCOORD | ||
| LEVINFO | ||
| LIGHT_MOBILESTR | ||
| LIGHT_MOVEPOINT | ||
| LVERT | ||
| MAPDRAW_CLIPCHECKSTR | ||
| MATRIXI | ||
| MENUDATAFMA | ||
| MOVEDATA | ||
| MRT_TORCH_STR | ||
| NAMEVALUE | ||
| OBJECTSPRITE | ||
| OPTIONDATASTR | ||
| PATROLDOGSTR | ||
| PLANE | ||
| PLATFORM_BIG_DUMMY_DEFSTR | ||
| PLATFORM_CONVEY_DEFSTR | ||
| PLATFORM_CONVEY_WORKSTR | ||
| PLATFORM_POINTTAG | ||
| PLATFORM_POINTX_TAG | ||
| PLATFORM_PUSHABLE_DEFSTR | ||
| PLATFORM_PUSHABLE_WORKSTR | ||
| PLATFORM_ROTATING_DEFSTR | ||
| PLATFORM_SAVESTR | ||
| POINT2D | ||
| POSMARK | ||
| PSITEXTURES | ||
| PUZZLEVARSSTR | ||
| QUATERNION | ||
| QUATERNIONSHORT | ||
| RAILDATA | ||
| RAILRECORD | ||
| RGBCD | ||
| ROUTEBOX | ||
| ROUTEBOX_VECTOR | ||
| ROUTEFIND_STR | ||
| ROUTE_BOXISECT_STR | ||
| SCENICSTR | ||
| SCENIC_BFF | ||
| SFX | ||
| SHORT2DVECTOR | ||
| SHORTQUAT | ||
| SHORTXY | ||
| SKEYFRAME | ||
| SKINVTX | ||
| SLERPSTR | ||
| SOUNDTRIGGERLIST | ||
| SOUND_BFF | ||
| SOUND_TRIGGER | ||
| SPECIALLEVEL_SWITCHSTR | ||
| SPOT_SFX | ||
| SPRITELIST | ||
| SPRITE_ANIMATION | ||
| SPRITE_ANIMATION_TEMPLATE | ||
| SPROUTMANAGER | ||
| SPROUTSTR | ||
| TAGACTION | ||
| TAGACTION_FIVESHLONGS | ||
| TAGACTION_FOURSHORTS | ||
| TAGACTION_GOTO_LEVEL | ||
| TAGACTION_LEAD_ACTION | ||
| TAGACTION_OBJECT_USABLE | ||
| TAGACTION_PLAY_SAMPLE | ||
| TAGACTION_SETOBJECTPARAMETER | ||
| TAGACTION_SETVAR | ||
| TAGACTION_SET_SCENIC_ANIM | ||
| TAGACTION_TASK_COMPLETED | ||
| TAGACTION_VECTOR | ||
| TAGACTOR2 | ||
| TAGCONDITION | ||
| TAGCONDITION_BUTTON_PRESSED | ||
| TAGCONDITION_IN_BOX | ||
| TAGCONDITION_NEAR_POINT | ||
| TAGCONDITION_OBJECTPARAMETER | ||
| TAGCONDITION_TASK_COMPLETED | ||
| TAGCONDITION_VARIABLE | ||
| TAGLEVEL_VISUAL_DATA | ||
| TAGPLANE2 | ||
| TAGPOLY | ||
| TAGPUZZLE | ||
| TAGPUZZLIST | ||
| TAGRGBCD | ||
| TAGSPRITE | ||
| TAGWORLD_VISUAL_DATA | ||
| TAG_MALLOC_LIST_TYPE | ||
| TAG_MALLOC_TYPE | ||
| TEXANIM | ||
| TEXANIMFRAME | ||
| TEXANIMHEADER | ||
| TEXANIMLIST | ||
| TEXINSTANCE | ||
| TEXTCTRL | ||
| TEXTURE_ANIMATION | ||
| TMD_P_FG3I | ||
| TMD_P_FG4I | ||
| TMD_P_FT3I | ||
| TMD_P_FT4I | ||
| TMD_P_GT3I | ||
| TMD_P_GT4I | ||
| TPOINT | ||
| TVECTOR | ||
| UBYTEVECTOR | ||
| VECTOR2D | ||
| VKEYFRAME | ||
| WINGCTRL | ||
| WM_BARS | ||
| WM_CHICKEN | ||
| WM_PROGRESS | ||
| WORLD_MESH_INSTANCE | ||
| XA_INDEX_STR | ||
| XYSHORT | ||
| _ACTOR | ||
| _CAMVARS | ||
| _DCKMATRIX | ||
| _DCKOBJECT | ||
| _DCKPOLYGON | ||
| _DCKQUATERNION | ||
| _DCKVERTEX | ||
| _DEBRIS_FLAG_SUB_TYPE | ||
| _DEBRIS_FLAG_TYPE | ||
| _DSHOCK_EVENT | ||
| _EXLIGHT_DATA_TYPE | ||
| _EXLIGHT_RGB | ||
| _EXLIGHT_TYPE | ||
| _FileIODataType | ||
| _LanguageDataType | ||
| _PadDataType2 | ||
| _PadPacket | ||
| _Point2DType | ||
| _Point3DType | ||
| _RAILDATA | ||
| _TIM_HEADER | ||
| _TIM_PIXELDATA | ||
| _VMUCHECK | ||
| _XADataType | ||
| _displayPageType | ||
| animation | ||
| catDeviceStr | ||
| catDroneStr | ||
| catFloaterStr | ||
| catStr | ||
| controlType | ||
| countDownTimerStr | ||
| deviceStr | ||
| dogType | ||
| dogchaseChickenType | ||
| doorType | ||
| dustType | ||
| fireDrone | ||
| fireFlap | ||
| gametimerType | ||
| inventoryType | ||
| light | ||
| link | ||
| mattressStr | ||
| optionsScreenType | ||
| seesawDroneStr | ||
| seesawStr | ||
| soundType | ||
| spotliteDrawScratch | ||
| stiltsStr | ||
| tagBMPHeaderType | ||
| tagCAMINFO | ||
| tagCHARACTER | ||
| tagCHARACTERLIST | ||
| tagCOLLBOX | ||
| tagCOLLDATA | ||
| tagCOLL_BFF | ||
| tagDEMOFRAME | ||
| tagENEMY | ||
| tagENEMYINFO | ||
| tagENEMYLIST | ||
| tagENEMYPOINT | ||
| tagFMAINFO | ||
| tagMAPCAMDATATYPE | ||
| tagMAPDATA | ||
| tagOVERRIDE | ||
| tagPARTICLE | ||
| tagPARTICLEFX | ||
| tagPARTICLEFXLIST | ||
| tagPLATFORMDEF | ||
| tagPLATFORMWORK | ||
| tagRAMPHEADER | ||
| tagREBDATA | ||
| tagTXTATTRIB | ||
| tag_VENT | ||
| u162DVECTOR | ||
| u16VECTOR |
| Name | Code |
|---|---|
| Max Eggs | 800AA1D0 0063 1 |
| Have All Map Pieces (GS 2.2 or Higher Needed) | 50000901 0000 300AA1F1 00011 |
// I'll do these things for platforms, with a view to copying 'em into the main collision code
// when it's free. Luv, Fred.
c
// Since Fred insits on being such a clever bugger and using in-line assembler, this file contains a load of macros so that the custom.c, custom2.c and map_draw.c compile and work on the PC as well as the PSX without me having to write a whole load of PC draw routines.
// James SteeleAlso thanks to Phillip and Andrew Oliver who founded Blitz Games - http://www.olivertwins.com
