//==========================================================================
//***
// DoActionSpecials
// handles action specials as code pointers
//
//==========================================================================
bool DoActionSpecials(FScanner &sc, FState & state, Baggage &bag)
{
int i;
int min_args, max_args;
FString specname = sc.String;
int special = P_FindLineSpecial(sc.String, &min_args, &max_args);
if (special > 0 && min_args >= 0)
{
int paramindex=PrepareStateParameters(&state, 6, bag.Info->Class);
StateParams.Set(paramindex, new FxConstant(special, sc));
// Make this consistent with all other parameter parsing
if (sc.CheckToken('('))
{
for (i = 0; i < 5;)
{
StateParams.Set(paramindex+i+1, ParseExpression (sc, bag.Info->Class));
i++;
if (!sc.CheckToken (',')) break;
}
sc.MustGetToken (')');
}
else i=0;
if (i < min_args)
{
sc.ScriptError ("Too few arguments to %s", specname.GetChars());
}
if (i > max_args)
{
sc.ScriptError ("Too many arguments to %s", specname.GetChars());
}
state.SetAction(FindGlobalActionFunction("A_CallSpecial"), false);
return true;
}
return false;
}
//==========================================================================
//***
// ParseStates
// parses a state block
//
//==========================================================================
void ParseStates(FScanner &sc, FActorInfo * actor, AActor * defaults, Baggage &bag)
{
FString statestring;
FState state;
char lastsprite[5]="";
sc.MustGetStringName ("{");
sc.SetEscape(false); // disable escape sequences in the state parser
while (!sc.CheckString ("}") && !sc.End)
{
memset(&state,0,sizeof(state));
statestring = ParseStateString(sc);
if (!statestring.CompareNoCase("GOTO"))
{
do_goto:
statestring = ParseStateString(sc);
if (sc.CheckString ("+"))
{
sc.MustGetNumber ();
statestring += '+';
statestring += sc.String;
}
if (!bag.statedef.SetGotoLabel(statestring))
{
sc.ScriptError("GOTO before first state");
}
}
else if (!statestring.CompareNoCase("STOP"))
{
do_stop:
if (!bag.statedef.SetStop())
{
sc.ScriptError("STOP before first state");
continue;
}
}
else if (!statestring.CompareNoCase("WAIT") || !statestring.CompareNoCase("FAIL"))
{
if (!bag.statedef.SetWait())
{
sc.ScriptError("%s before first state", sc.String);
continue;
}
}
else if (!statestring.CompareNoCase("LOOP"))
{
if (!bag.statedef.SetLoop())
{
sc.ScriptError("LOOP before first state");
continue;
}
}
else
{
sc.MustGetString();
if (sc.Compare (":"))
{
do
{
bag.statedef.AddStateLabel(statestring);
statestring = ParseStateString(sc);
if (!statestring.CompareNoCase("GOTO"))
{
goto do_goto;
}
else if (!statestring.CompareNoCase("STOP"))
{
goto do_stop;
}
sc.MustGetString ();
} while (sc.Compare (":"));
// continue;
}
sc.UnGet ();
if (statestring.Len() != 4)
{
sc.ScriptError ("Sprite names must be exactly 4 characters\n");
}
state.sprite = GetSpriteIndex(statestring);
state.Misc1 = state.Misc2 = 0;
state.ParameterIndex = 0;
sc.MustGetString();
statestring = sc.String;
if (sc.CheckString("RANDOM"))
{
int min, max;
sc.MustGetStringName("(");
sc.MustGetNumber();
min = clamp<int>(sc.Number, -1, SHRT_MAX);
sc.MustGetStringName(",");
sc.MustGetNumber();
max = clamp<int>(sc.Number, -1, SHRT_MAX);
sc.MustGetStringName(")");
if (min > max)
{
swapvalues(min, max);
}
state.Tics = min;
state.TicRange = max - min;
}
else
{
sc.MustGetNumber();
state.Tics = clamp<int>(sc.Number, -1, SHRT_MAX);
state.TicRange = 0;
}
while (sc.GetString() && !sc.Crossed)
{
if (sc.Compare("BRIGHT"))
{
state.Fullbright = true;
continue;
}
if (sc.Compare("FAST"))
{
state.Fast = true;
continue;
}
if (sc.Compare("SLOW"))
{
state.Slow = true;
continue;
}
if (sc.Compare("NODELAY"))
{
if (bag.statedef.GetStateLabelIndex(NAME_Spawn) == bag.statedef.GetStateCount())
{
state.NoDelay = true;
}
else
{
sc.ScriptMessage("NODELAY may only be used immediately after Spawn:");
}
continue;
}
if (sc.Compare("OFFSET"))
{
// specify a weapon offset
sc.MustGetStringName("(");
sc.MustGetNumber();
state.Misc1 = sc.Number;
sc.MustGetStringName (",");
sc.MustGetNumber();
state.Misc2 = sc.Number;
sc.MustGetStringName(")");
continue;
}
if (sc.Compare("LIGHT"))
{
sc.MustGetStringName("(");
do
{
sc.MustGetString();
#ifdef DYNLIGHT
AddStateLight(&state, sc.String);
#endif
}
while (sc.CheckString(","));
sc.MustGetStringName(")");
continue;
}
if (sc.Compare("CANRAISE"))
{
state.CanRaise = true;
continue;
}
// Make the action name lowercase
strlwr (sc.String);
if (DoActionSpecials(sc, state, bag))
{
goto endofstate;
}
FName funcname = FName(sc.String, true);
PSymbol *sym = bag.Info->Class->Symbols.FindSymbol (funcname, true);
if (sym != NULL && sym->SymbolType == SYM_ActionFunction)
{
PSymbolActionFunction *afd = static_cast<PSymbolActionFunction *>(sym);
state.SetAction(afd, false);
if (!afd->Arguments.IsEmpty())
{
const char *params = afd->Arguments.GetChars();
int numparams = (int)afd->Arguments.Len();
int v;
if (!islower(*params))
{
sc.MustGetStringName("(");
}
else
{
if (!sc.CheckString("("))
{
state.ParameterIndex = afd->defaultparameterindex+1;
goto endofstate;
}
}
int paramindex = PrepareStateParameters(&state, numparams, bag.Info->Class);
int paramstart = paramindex;
bool varargs = params[numparams - 1] == '+';
int varargcount = 0;
if (varargs)
{
paramindex++;
}
else if (afd->defaultparameterindex > -1)
{
StateParams.Copy(paramindex, afd->defaultparameterindex, int(afd->Arguments.Len()));
}
while (*params)
{
FxExpression *x;
if ((*params == 'l' || *params == 'L') && sc.CheckNumber())
{
// Special case: State label as an offset
if (sc.Number > 0 && statestring.Len() > 1)
{
sc.ScriptError("You cannot use state jumps commands with a jump offset on multistate definitions\n");
}
v=sc.Number;
if (v<0)
{
sc.ScriptError("Negative jump offsets are not allowed");
}
if (v > 0)
{
x = new FxStateByIndex(bag.statedef.GetStateCount() + v, sc);
}
else
{
x = new FxConstant((FState*)NULL, sc);
}
}
else
{
// Use the generic parameter parser for everything else
x = ParseParameter(sc, bag.Info->Class, *params, false);
}
StateParams.Set(paramindex++, x);
params++;
if (varargs)
{
varargcount++;
}
if (*params)
{
if (*params == '+')
{
if (sc.CheckString(")"))
{
StateParams.Set(paramstart, new FxConstant(varargcount, sc));
goto endofstate;
}
params--;
StateParams.Reserve(1, bag.Info->Class);
}
else if ((islower(*params) || *params=='!') && sc.CheckString(")"))
{
goto endofstate;
}
sc.MustGetStringName (",");
}
}
sc.MustGetStringName(")");
}
else
{
sc.MustGetString();
if (sc.Compare("("))
{
sc.ScriptError("You cannot pass parameters to '%s'\n", funcname.GetChars());
}
sc.UnGet();
}
goto endofstate;
}
sc.ScriptError("Invalid state parameter %s\n", sc.String);
}
sc.UnGet();
endofstate:
if (!bag.statedef.AddStates(&state, statestring))
{
sc.ScriptError ("Invalid frame character string '%s'", statestring.GetChars());
}
}
}
sc.SetEscape(true); // re-enable escape sequences
}
