Kernel functions are routines built into the interpreter that can be called from scripts. They are essential as they do the graphic drawing, window handling, text printing, file I/O, and everything else you need. The number of kernel functions vary from intepreter versions, but in SCI Studio's interpreter, there are 114.
To fully understand these, you must be farmilliar with the Variable Types.
SCI0 Kernel functions
| number | Abs(number value) |
| void | AddAfter(heapPtr pList, heapPtr afterNode, heapPtr pNode) |
| void | AddMenu(string caption, string itemCaptions) |
| void | AddToEnd(heapPtr pList, heapPtr pNode) |
| void | AddToFront(heapPtr pList, heapPtr pNode) |
| void | AddToPic(heapPtr viewList) |
| void | Animate([heapPtr cast, bool cycle]) |
| void | BaseSetter(heapPtr viewObj) |
| bool | CanBeHere(heapPtr viewObj[, heapPtr pList]) |
| number | CelHigh(number view, number loop, number cel) |
| number | CelWide(number view, number loop, number cel) |
| bool | CheckFreeSpace(string directory) |
| bool | CheckSaveGame(string gameName, number slotNumber[, string gameVersion]) |
| heapPtr | Clone(heapPtr object) |
| number | CoordPri(number y) |
| number | CosDiv(number angle, number factor) |
| number | CosMult(number angle, number factor) |
| void | DeleteKey(heapPtr pList, number key) |
| heapPtr | DeviceInfo(diGET_DEVICE, string thePath, string strBuf) |
| void | DirLoop(heapPtr viewObj, number angle) |
| [heapPtr] | Display(string text[, params]) |
| void | DisposeClone(heapPtr object) |
| void | DisposeList(heapPtr pList) |
| void | DisposeScript(number scriptNum) |
| void | DisposeWindow(heapPtr Window) |
| void | DoAvoider(heapPtr moverObj) |
| bool | DoBresen(heapPtr moverObj) |
| void | DoSound(number subFunction, ...) |
| void | DrawCel(number view, number loop, number cel, point position, number priority) |
| void | DrawControl(heapPtr control) |
| void | DrawMenuBar(bool mode) |
| void | DrawPic(number picNum, [number animation, bool clear, number defaultPalette]) |
| void | DrawStatus(string text) |
| void | EditControl(heapPtr control, heapPtr event) |
| bool | EmptyList(heapPtr pList) |
| void | FClose(number handle) |
| number | FGets(string buffer, number max, number handle) |
| heapPtr | FindKey(heapPtr pList, number key) |
| heapPtr | FirstNode(heapPtr pList) |
| void | FlushResources() |
| number | FOpen(string name, number mode) |
| string | Format(string destString, string fmtString[, parameters]) |
| void | FPuts(number handle, string buffer) |
| bool | GameIsRestarting() |
| number | GetAngle(point origin, point dest) |
| string | GetCWD(string strBuf) |
| number | GetDistance(point origin, point dest) |
| bool | GetEvent(number types, heapPtr event) |
| string | GetFarText(number rsNumber, number index, string aString) |
| * | GetMenu(number menuItem, number subfunction, param) |
| void | GetPort(heapPtr newPort) |
| string | GetSaveDir() |
| number | GetSaveFiles(string gameName, strings descBuffer, @number descSlots[]) |
| number | GetTime([bool fTIME_OF_DAY]) |
| void | GlobalToLocal(heapPtr event) |
| * | Graph(number subFunction, ...) |
| bool | HaveMouse() |
| void | HiliteControl(heapPtr control) |
| void | InitBresen(heapPtr moverObj[, number stepMult]) |
| void | InspectObj(heapPtr pObj) |
| bool | IsObject(heapPtr obj) |
| number | Joystick(number subfunction, number state) |
| heapPtr | LastNode(heapPtr pList) |
| heapPtr | Load(number type, number resNum) |
| void | LocalToGlobal(heapPtr event) |
| heapPtr | MapKeyToDir(heapPtr event) |
| number | MemoryInfo(number type) |
| number | MenuSelect(heapPtr event) |
| heapPtr | NewList() |
| heapPtr | NewNode(number value, number key) |
| heapPtr | NewWindow(rect bounds, string title, number flags, number priority, number forecolor, number backcolor) |
| heapPtr | NextNode(heapPtr pNode) |
| number | NodeValue(heapPtr pNode) |
| number | NumCels(heapPtr obj) |
| number | NumLoops(heapPtr obj) |
| number | OnControl(number map, point xy or rect aRect ) |
| bool | Parse(heapPtr event, string text) |
| number | PicNotValid([number newFlag]) |
| heapPtr | PrevNode(heapPtr pNode) |
| void | Profiler() |
| number | Random(number min, number max) |
| number | ReadNumber(string aString) |
| bool | RespondsTo(heapPtr anObject, selector aSelector) |
| * | RestartGame() |
| void | RestoreGame(string gameName, number slotNumber, string gameVersion) |
| bool | Said(said saidString) |
| bool | SaveGame(string gameName, number slotNumber, string description, string gameVersion) |
| heapPtr | ScriptID(number scriptNum, number Index) |
| void | SetCursor(number resNumber, bool visible[,point coords]) |
| void | SetDebug() |
| void | SetJump(heapPtr moverObj, number dx, number dy, number gy) |
| void | SetMenu(number menuItem, [number subfunction, params]) |
| void | SetNowSeen(heapPtr viewObj) |
| void | SetPort(heapPtr newPort) |
| void | SetSynonyms(heapPtr scrListObj) |
| void | ShakeScreen(number shakeCount, [number direction]) |
| void | Show() |
| void | ShowFree() |
| void | ShowObjs() |
| void | ShowSends() |
| number | SinDiv(number angle, number factor) |
| number | SinMult(number angle, number factor) |
| number | Sqrt(number value) |
| number | StackUsage() |
| char | StrAt(string aString, number index[, char replacement]) |
| string | StrCat(string destString, string srcString) |
| number | StrCmp(string aString, string bString[, number max]) |
| string | StrCpy(string destString, string srcString[, number max]) |
| string | StrEnd(string aString) |
| number | StrLen(string aString) |
| void | TextSize(@rect sizeRect, string text, number font[, number maxWidth]) |
| void | UnLoad(number type, number resNum) |
| bool | ValidPath(string aDirectory) |
| number | Wait(number ticks) |