- Added dummy code generation for states that pass parameters to action functions.

Currently, they're only good for disassembly and pasting into a proper text editor
  for viewing.
- Fixed some problems with the FxExpression emitters that were revealed by actually
  using them on the standard actors.

SVN r1911 (scripting)

src/d_dehacked.cpp

@@ -611,8 +611,6 @@ enum MBFCodePointers
 	SMMU_NailBomb,	// No misc, but it's basically A_Explode with an added effect
 };
 
-int PrepareStateParameters(FState * state, int numparams, const PClass *cls);// Should probably be in a .h file.
-
 // Hacks the parameter list for the given state so as to convert MBF-args (misc1 and misc2) into real args.
 
 void SetDehParams(FState * state, int codepointer)
@@ -636,6 +634,7 @@ void SetDehParams(FState * state, int codepointer)
 	// Bleargh! This will all have to be redone once scripting works
 
 	// Not sure exactly why the index for a state is greater by one point than the index for a symbol.
+#if 0
 	DPrintf("SetDehParams: Paramindex is %d, default is %d.\n", 
 		state->ParameterIndex-1, sym->defaultparameterindex);
 	if (state->ParameterIndex-1 == sym->defaultparameterindex)
@@ -716,6 +715,7 @@ void SetDehParams(FState * state, int codepointer)
 		// This simply should not happen.
 		Printf("Unmanaged dehacked codepointer alias num %i\n", codepointer);
 	}
+#endif
 }
 
 static int PatchThing (int thingy)

src/p_states.cpp

@@ -817,13 +817,16 @@ bool FStateDefinitions::SetLoop()
 //==========================================================================
 //
 // AddStates
-// adds some state to the current definition set
+//
+// Adds some state to the current definition set. Returns the number of
+// states added. Positive = no errors, negative = errors.
 //
 //==========================================================================
 
-bool FStateDefinitions::AddStates(FState *state, const char *framechars)
+int FStateDefinitions::AddStates(FState *state, const char *framechars)
 {
 	bool error = false;
+	int count = 0;
 	while (*framechars)
 	{
 		int frame;
@@ -842,9 +845,10 @@ bool FStateDefinitions::AddStates(FState *state, const char *framechars)
 
 		state->Frame = (state->Frame&(SF_FULLBRIGHT)) | frame;
 		StateArray.Push(*state);
+		++count;
 	}
 	laststate = &StateArray[StateArray.Size() - 1];
-	return !error;
+	return !error ? count : -count;
 }
 
 //==========================================================================

src/thingdef/thingdef.cpp

@@ -64,6 +64,7 @@
 #include "thingdef.h"
 #include "thingdef_exp.h"
 #include "a_sharedglobal.h"
+#include "vmbuilder.h"
 
 // EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
 void InitThingdef();
@@ -279,8 +280,42 @@ void FinishActor(const FScriptPosition &sc, FActorInfo *info, Baggage &bag)
 static void FinishThingdef()
 {
 	int errorcount = StateParams.ResolveAll();
+	unsigned i, j;
 
-	for (unsigned i = 0;i < PClass::m_Types.Size(); i++)
+	for (i = 0; i < StateTempCalls.Size(); ++i)
+	{
+		FStateTempCall *tcall = StateTempCalls[i];
+		FCompileContext ctx(tcall->ActorInfo->Class, true);
+		for (j = 0; j < tcall->Parameters.Size(); ++j)
+		{
+			tcall->Parameters[j]->Resolve(ctx);
+		}
+		VMFunctionBuilder buildit;
+		for (j = 0; j < tcall->Parameters.Size(); ++j)
+		{
+			FxExpression *p = /*new FxParameter*/(tcall->Parameters[j]);
+			p->Emit(&buildit);
+			delete p;
+		}
+		// FIXME: Call a real function
+		buildit.Emit(OP_CALL_K, buildit.GetConstantAddress(NULL, ATAG_OBJECT), j, 0);
+		VMScriptFunction *func = buildit.MakeFunction();
+#if 1
+		const char *marks = "=======================================================";
+		char label[40];
+		int labellen = mysnprintf(label, countof(label), "Function %s.States[%d] (*%d)",
+			tcall->ActorInfo->Class->TypeName.GetChars(),
+			tcall->FirstState, tcall->NumStates);
+		Printf("\n%.*s %s %.*s", MAX(3, 38 - labellen / 2), marks, label, MAX(3, 38 - labellen / 2), marks);
+		VMDumpConstants(func);
+		Printf("\nDisassembly:\n");
+		VMDisasm(func->Code, func->NumCodeBytes / 4, func);
+#endif
+		//if(i==6) I_Error("Poop");
+	}
+	I_Error("Poop");
+
+	for (i = 0; i < PClass::m_Types.Size(); i++)
 	{
 		PClass * ti = PClass::m_Types[i];
 

src/thingdef/thingdef.h

@@ -99,9 +99,8 @@ public:
 	bool SetStop();
 	bool SetWait();
 	bool SetLoop();
-	bool AddStates(FState *state, const char *framechars);
+	int AddStates(FState *state, const char *framechars);
 	int GetStateCount() const { return StateArray.Size(); }
-
 };
 
 //==========================================================================
@@ -110,6 +109,15 @@ public:
 //
 //==========================================================================
 
+struct FStateTempCall
+{
+	FActorInfo *ActorInfo;
+	int FirstState;
+	int NumStates;
+	TArray<FxExpression *> Parameters;
+};
+extern TDeletingArray<FStateTempCall *> StateTempCalls;
+
 struct FStateExpression
 {
 	FxExpression *expr;

src/thingdef/thingdef_exp.h

@@ -314,6 +314,7 @@ public:
 		return true;
 	}
 	ExpVal EvalExpression (AActor *self);
+	ExpEmit Emit(VMFunctionBuilder *build);
 };
 
 
@@ -439,7 +440,7 @@ public:
 	FxBinary(int, FxExpression*, FxExpression*);
 	~FxBinary();
 	bool ResolveLR(FCompileContext& ctx, bool castnumeric);
-	void Promote();
+	void Promote(FCompileContext &ctx);
 };
 
 //==========================================================================

src/thingdef/thingdef_expression.cpp

@@ -79,7 +79,7 @@ DEFINE_MEMBER_VARIABLE(Score, AActor)
 DEFINE_MEMBER_VARIABLE(uservar, AActor)
 
 ExpEmit::ExpEmit(VMFunctionBuilder *build, int type)
-: RegNum(build->Registers[type].Get(1)), RegType(type)
+: RegNum(build->Registers[type].Get(1)), RegType(type), Konst(false)
 {
 }
 
@@ -371,7 +371,7 @@ ExpEmit FxParameter::Emit(VMFunctionBuilder *build)
 		}
 		else if (val.Type == VAL_Float)
 		{
-			build->Emit(OP_PARAM, 0, REGT_FLOAT | REGT_KONST, build->GetConstantFloat(val.Int));
+			build->Emit(OP_PARAM, 0, REGT_FLOAT | REGT_KONST, build->GetConstantFloat(val.Float));
 		}
 		else if (val.Type == VAL_Class || val.Type == VAL_Object)
 		{
@@ -390,11 +390,15 @@ ExpEmit FxParameter::Emit(VMFunctionBuilder *build)
 	{
 		ExpEmit where = Operand->Emit(build);
 
-		if (where.RegNum == REGT_NIL)
+		if (where.RegType == REGT_NIL)
 		{
 			ScriptPosition.Message(MSG_ERROR, "Attempted to pass a non-value");
 			build->Emit(OP_PARAM, 0, where.RegType, where.RegNum);
 		}
+		else
+		{
+			build->Emit(OP_PARAM, 0, where.RegType, where.RegNum);
+		}
 	}
 	return ExpEmit();
 }
@@ -445,6 +449,40 @@ FxExpression *FxConstant::MakeConstant(PSymbol *sym, const FScriptPosition &pos)
 	return x;
 }
 
+ExpEmit FxConstant::Emit(VMFunctionBuilder *build)
+{
+	ExpEmit out;
+
+	out.Konst = true;
+	if (value.Type == VAL_Int || value.Type == VAL_Sound || value.Type == VAL_Name || value.Type == VAL_Color)
+	{
+		out.RegType = REGT_INT;
+		out.RegNum = build->GetConstantInt(value.Int);
+	}
+	else if (value.Type == VAL_Float)
+	{
+		out.RegType = REGT_FLOAT;
+		out.RegNum = build->GetConstantFloat(value.Float);
+	}
+	else if (value.Type == VAL_Class || value.Type == VAL_Object)
+	{
+		out.RegType = REGT_POINTER;
+		out.RegNum = build->GetConstantAddress(value.pointer, ATAG_OBJECT);
+	}
+	else if (value.Type == VAL_State)
+	{
+		out.RegType = REGT_POINTER;
+		out.RegNum = build->GetConstantAddress(value.pointer, ATAG_STATE);
+	}
+	else
+	{
+		ScriptPosition.Message(MSG_ERROR, "Cannot emit needed constant");
+		out.RegType = REGT_NIL;
+		out.RegNum = 0;
+	}
+	return out;
+}
+
 //==========================================================================
 //
 //
@@ -610,6 +648,7 @@ ExpEmit FxFloatCast::Emit(VMFunctionBuilder *build)
 	ExpEmit from = basex->Emit(build);
 	assert(!from.Konst);
 	assert(basex->ValueType == VAL_Int);
+	build->FreeReg(from.RegType, from.RegNum);
 	ExpEmit to(build, REGT_FLOAT);
 	build->Emit(OP_CAST, to.RegNum, from.RegNum, CAST_I2F);
 	return to;
@@ -1033,15 +1072,15 @@ bool FxBinary::ResolveLR(FCompileContext& ctx, bool castnumeric)
 	return true;
 }
 
-void FxBinary::Promote()
+void FxBinary::Promote(FCompileContext &ctx)
 {
 	if (left->ValueType == VAL_Float && right->ValueType == VAL_Int)
 	{
-		right = new FxFloatCast(right);
+		right = (new FxFloatCast(right))->Resolve(ctx);
 	}
 	else if (left->ValueType == VAL_Int && right->ValueType == VAL_Float)
 	{
-		left = new FxFloatCast(left);
+		left = (new FxFloatCast(left))->Resolve(ctx);
 	}
 }
 
@@ -1103,7 +1142,7 @@ FxExpression *FxAddSub::Resolve(FCompileContext& ctx)
 
 		}
 	}
-	Promote();
+	Promote(ctx);
 	return this;
 }
 
@@ -1280,7 +1319,7 @@ FxExpression *FxMulDiv::Resolve(FCompileContext& ctx)
 
 		}
 	}
-	Promote();
+	Promote(ctx);
 	return this;
 }
 
@@ -1342,6 +1381,7 @@ ExpEmit FxMulDiv::Emit(VMFunctionBuilder *build)
 			swap(op1, op2);
 		}
 		assert(!op1.Konst);
+		build->FreeReg(op1.RegType, op1.RegNum);
 		if (!op2.Konst)
 		{
 			build->FreeReg(op2.RegType, op2.RegNum);
@@ -1451,7 +1491,7 @@ FxExpression *FxCompareRel::Resolve(FCompileContext& ctx)
 		delete this;
 		return e;
 	}
-	Promote();
+	Promote(ctx);
 	ValueType = VAL_Int;
 	return this;
 }
@@ -1604,7 +1644,7 @@ cont:
 		delete this;
 		return e;
 	}
-	Promote();
+	Promote(ctx);
 	ValueType = VAL_Int;
 	return this;
 }
@@ -2357,6 +2397,14 @@ FxExpression *FxRandom::Resolve(FCompileContext &ctx)
 	CHECKRESOLVED();
 	if (min && max)
 	{
+		if (min->ValueType != VAL_Int)
+		{
+			min = new FxIntCast(min);
+		}
+		if (max->ValueType != VAL_Int)
+		{
+			max = new FxIntCast(max);
+		}
 		RESOLVE(min, ctx);
 		RESOLVE(max, ctx);
 		ABORT(min && max);

src/thingdef/thingdef_states.cpp

@@ -56,18 +56,7 @@
 #include "colormatcher.h"
 #include "thingdef_exp.h"
 
-//==========================================================================
+TDeletingArray<FStateTempCall *> StateTempCalls;
-//***
-// PrepareStateParameters
-// creates an empty parameter list for a parameterized function call
-//
-//==========================================================================
-int PrepareStateParameters(FState * state, int numparams, const PClass *cls)
-{
-	int paramindex=StateParams.Reserve(numparams, cls);
-	state->ParameterIndex = paramindex+1;
-	return paramindex;
-}
 
 //==========================================================================
 //***
@@ -75,7 +64,7 @@ int PrepareStateParameters(FState * state, int numparams, const PClass *cls)
 // handles action specials as code pointers
 //
 //==========================================================================
-bool DoActionSpecials(FScanner &sc, FState & state, Baggage &bag)
+bool DoActionSpecials(FScanner &sc, FState & state, Baggage &bag, FStateTempCall *tcall)
 {
 	int i;
 	int min_args, max_args;
@@ -85,17 +74,14 @@ bool DoActionSpecials(FScanner &sc, FState & state, Baggage &bag)
 
 	if (special > 0 && min_args >= 0)
 	{
-
+		tcall->Parameters.Push(new FxParameter(new FxConstant(special, sc)));
-		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));
+				tcall->Parameters.Push(new FxParameter(ParseExpression(sc, bag.Info->Class)));
 				i++;
 				if (!sc.CheckToken (',')) break;
 			}
@@ -154,6 +140,7 @@ void ParseStates(FScanner &sc, FActorInfo * actor, AActor * defaults, Baggage &b
 	FString statestring;
 	FState state;
 	char lastsprite[5] = "";
+	FStateTempCall *tcall = NULL;
 
 	sc.MustGetStringName ("{");
 	sc.SetEscape(false);	// disable escape sequences in the state parser
@@ -238,6 +225,10 @@ do_stop:
 
 			sc.MustGetNumber();
 			state.Tics = clamp<int>(sc.Number, -1, 32767);
+			if (tcall == NULL)
+			{
+				tcall = new FStateTempCall;
+			}
 
 			while (sc.GetString() && !sc.Crossed)
 			{
@@ -262,7 +253,7 @@ do_stop:
 				// Make the action name lowercase to satisfy the gperf hashers
 				strlwr (sc.String);
 
-				if (DoActionSpecials(sc, state, bag))
+				if (DoActionSpecials(sc, state, bag, tcall))
 				{
 					goto endofstate;
 				}
@@ -292,19 +283,19 @@ do_stop:
 							}
 						}
 						
-						int paramindex = PrepareStateParameters(&state, numparams, bag.Info->Class);
+//						int paramindex = PrepareStateParameters(&state, numparams, bag.Info->Class);
-						int paramstart = paramindex;
+//						int paramstart = paramindex;
 						bool varargs = params[numparams - 1] == '+';
-						int varargcount=0;
+						int argcount = 0;
 
 
 						if (varargs)
 						{
-							paramindex++;
+//							paramindex++;
 						}
 						else if (afd->defaultparameterindex > -1)
 						{
-							StateParams.Copy(paramindex, afd->defaultparameterindex, int(afd->Arguments.Len()));
+//							StateParams.Copy(paramindex, afd->defaultparameterindex, int(afd->Arguments.Len()));
 						}
 
 						while (*params)
@@ -338,19 +329,17 @@ do_stop:
 								// Use the generic parameter parser for everything else
 								x = ParseParameter(sc, bag.Info->Class, *params, false);
 							}
-							StateParams.Set(paramindex++, x);
+//							StateParams.Set(paramindex++, x);
+							tcall->Parameters.Push(new FxParameter(x));
 							params++;
-							if (varargs)
+							argcount++;
-							{
-								varargcount++;
-							}
 							if (*params)
 							{
 								if (*params == '+')
 								{
 									if (sc.CheckString(")"))
 									{
-										StateParams.Set(paramstart, new FxConstant(varargcount, sc));
+//										StateParams.Set(paramstart, new FxConstant(argcount, sc));
 										goto endofstate;
 									}
 									params--;
@@ -380,12 +369,26 @@ do_stop:
 			}
 			sc.UnGet();
 endofstate:
-			if (!bag.statedef.AddStates(&state, statestring))
+			int count = bag.statedef.AddStates(&state, statestring);
+			if (count < 0)
 			{
 				sc.ScriptError ("Invalid frame character string '%s'", statestring.GetChars());
+				count = -count;
+			}
+			if (tcall->Parameters.Size() != 0)
+			{
+				tcall->ActorInfo = actor;
+				tcall->FirstState = bag.statedef.GetStateCount() - count;
+				tcall->NumStates = count;
+				StateTempCalls.Push(tcall);
+				tcall = NULL;
 			}
 		}
 	}
+	if (tcall != NULL)
+	{
+		delete tcall;
+	}
 	sc.SetEscape(true);	// re-enable escape sequences
 }
 

src/zscript/vm.h

@@ -812,6 +812,7 @@ void VMSelectEngine(EVMEngine engine);
 extern int (*VMExec)(VMFrameStack *stack, const VM_UBYTE *pc, VMReturn *ret, int numret);
 void VMFillParams(VMValue *params, VMFrame *callee, int numparam);
 
+void VMDumpConstants(const VMScriptFunction *func);
 void VMDisasm(const VM_UBYTE *code, int codesize, const VMScriptFunction *func);
 
 #endif

src/zscript/vmbuilder.cpp

@@ -227,6 +227,10 @@ int VMFunctionBuilder::GetConstantString(FString val)
 
 int VMFunctionBuilder::GetConstantAddress(void *ptr, VM_ATAG tag)
 {
+	if (ptr == NULL)
+	{ // Make all NULL pointers generic. (Or should we allow typed NULLs?)
+		tag = ATAG_GENERIC;
+	}
 	AddrKonst *locp = AddressConstants.CheckKey(ptr);
 	if (locp != NULL)
 	{

src/zscript/vmbuilder.h

@@ -51,7 +51,7 @@ public:
 	RegAvailability Registers[4];
 
 	// Free a register.
-	void FreeReg(int regtype, int regnum);
+	void FreeReg(int regtype, int regnum) { Registers[regtype].Return(regnum, 1); }
 
 private:
 	struct AddrKonst

src/zscript/vmdisasm.cpp

@@ -101,6 +101,63 @@ const VMOpInfo OpInfo[NUM_OPS] =
 
 static int print_reg(int col, int arg, int mode, int immshift, const VMScriptFunction *func);
 
+void VMDumpConstants(const VMScriptFunction *func)
+{
+	char tmp[21];
+	int i, j, k, kk;
+
+	if (func->KonstD != NULL && func->NumKonstD != 0)
+	{
+		Printf("\nConstant integers:\n");
+		kk = (func->NumKonstD + 3) / 4;
+		for (i = 0; i < kk; ++i)
+		{
+			for (j = 0, k = i; j < 4 && k < func->NumKonstD; j++, k += kk)
+			{
+				mysnprintf(tmp, countof(tmp), "%3d. %d", k, func->KonstD[k]);
+				Printf("%-20s", tmp);
+			}
+			Printf("\n");
+		}
+	}
+	if (func->KonstF != NULL && func->NumKonstF != 0)
+	{
+		Printf("\nConstant floats:\n");
+		kk = (func->NumKonstF + 3) / 4;
+		for (i = 0; i < kk; ++i)
+		{
+			for (j = 0, k = i; j < 4 && k < func->NumKonstF; j++, k += kk)
+			{
+				mysnprintf(tmp, countof(tmp), "%3d. %.16f", k, func->KonstF[k]);
+				Printf("%-20s", tmp);
+			}
+			Printf("\n");
+		}
+	}
+	if (func->KonstA != NULL && func->NumKonstA != 0)
+	{
+		Printf("\nConstant addresses:\n");
+		kk = (func->NumKonstA + 3) / 4;
+		for (i = 0; i < kk; ++i)
+		{
+			for (j = 0, k = i; j < 4 && k < func->NumKonstA; j++, k += kk)
+			{
+				mysnprintf(tmp, countof(tmp), "%3d. %p", k, func->KonstA[k]);
+				Printf("%-20s", tmp);
+			}
+			Printf("\n");
+		}
+	}
+	if (func->KonstS != NULL && func->NumKonstS != 0)
+	{
+		Printf("\nConstant strings:\n");
+		for (i = 0; i < func->NumKonstS; ++i)
+		{
+			Printf("%3d. %s\n", func->KonstS[k].GetChars());
+		}
+	}
+}
+
 void VMDisasm(const VM_UBYTE *code, int codesize, const VMScriptFunction *func)
 {
 	const char *name;
@@ -129,13 +186,13 @@ void VMDisasm(const VM_UBYTE *code, int codesize, const VMScriptFunction *func)
 			a &= CMP_CHECK | CMP_APPROX;
 		}
 
-		printf("%08x: %02x%02x%02x%02x %-8s", i, code[i], code[i+1], code[i+2], code[i+3], name);
+		Printf("%08x: %02x%02x%02x%02x %-8s", i, code[i], code[i+1], code[i+2], code[i+3], name);
 		col = 0;
 		switch (code[i])
 		{
 		case OP_JMP:
 		case OP_TRY:
-			col = printf("%08x", i + 4 + JMPOFS(&code[i]));
+			col = Printf("%08x", i + 4 + JMPOFS(&code[i]));
 			break;
 
 		case OP_RET:
@@ -151,7 +208,7 @@ void VMDisasm(const VM_UBYTE *code, int codesize, const VMScriptFunction *func)
 					col += print_reg(col, *(VM_UHALF *)&code[i+2], MODE_PARAM, 16, func);
 					if (code[i+2] & REGT_FINAL)
 					{
-						col += printf(" [final]");
+						col += Printf(" [final]");
 					}
 				}
 			}
@@ -229,14 +286,14 @@ void VMDisasm(const VM_UBYTE *code, int codesize, const VMScriptFunction *func)
 		{
 			col = 30;
 		}
-		printf("%*c", 30 - col, ';');
+		Printf("%*c", 30 - col, ';');
 		if (code[i] == OP_JMP || code[i] == OP_TRY)
 		{
-			printf("%d\n", JMPOFS(&code[i]) >> 2);
+			Printf("%d\n", JMPOFS(&code[i]) >> 2);
 		}
 		else
 		{
-			printf("%d,%d,%d\n", code[i+1], code[i+2], code[i+3]);
+			Printf("%d,%d,%d\n", code[i+1], code[i+2], code[i+3]);
 		}
 	}
 }
@@ -249,57 +306,57 @@ static int print_reg(int col, int arg, int mode, int immshift, const VMScriptFun
 	}
 	if (col > 0)
 	{
-		col = printf(",");
+		col = Printf(",");
 	}
 	switch(mode)
 	{
 	case MODE_I:
-		return col+printf("d%d", arg);
+		return col+Printf("d%d", arg);
 	case MODE_F:
-		return col+printf("f%d", arg);
+		return col+Printf("f%d", arg);
 	case MODE_S:
-		return col+printf("s%d", arg);
+		return col+Printf("s%d", arg);
 	case MODE_P:
-		return col+printf("a%d", arg);
+		return col+Printf("a%d", arg);
 	case MODE_V:
-		return col+printf("v%d", arg);
+		return col+Printf("v%d", arg);
 
 	case MODE_KI:
 		if (func != NULL)
 		{
-			return col+printf("%d", func->KonstD[arg]);
+			return col+Printf("%d", func->KonstD[arg]);
 		}
-		return printf("kd%d", arg);
+		return Printf("kd%d", arg);
 	case MODE_KF:
 		if (func != NULL)
 		{
-			return col+printf("%f", func->KonstF[arg]);
+			return col+Printf("%f", func->KonstF[arg]);
 		}
-		return col+printf("kf%d", arg);
+		return col+Printf("kf%d", arg);
 	case MODE_KS:
 		if (func != NULL)
 		{
-			return col+printf("\"%s\"", func->KonstS[arg].GetChars());
+			return col+Printf("\"%s\"", func->KonstS[arg].GetChars());
 		}
-		return col+printf("ks%d", arg);
+		return col+Printf("ks%d", arg);
 	case MODE_KP:
 		if (func != NULL)
 		{
-			return col+printf("%p", func->KonstA[arg]);
+			return col+Printf("%p", func->KonstA[arg]);
 		}
-		return col+printf("ka%d", arg);
+		return col+Printf("ka%d", arg);
 	case MODE_KV:
 		if (func != NULL)
 		{
-			return col+printf("(%f,%f,%f)", func->KonstF[arg], func->KonstF[arg+1], func->KonstF[arg+2]);
+			return col+Printf("(%f,%f,%f)", func->KonstF[arg], func->KonstF[arg+1], func->KonstF[arg+2]);
 		}
-		return col+printf("kv%d", arg);
+		return col+Printf("kv%d", arg);
 
 	case MODE_IMMS:
-		return col+printf("%d", (arg << immshift) >> immshift);
+		return col+Printf("%d", (arg << immshift) >> immshift);
 
 	case MODE_IMMZ:
-		return col+printf("%d", arg);
+		return col+Printf("%d", arg);
 
 	case MODE_PARAM:
 		{
@@ -308,15 +365,15 @@ static int print_reg(int col, int arg, int mode, int immshift, const VMScriptFun
 			switch (p.RegType & (REGT_TYPE | REGT_KONST | REGT_MULTIREG))
 			{
 			case REGT_INT:
-				return col+printf("d%d", p.RegNum);
+				return col+Printf("d%d", p.RegNum);
 			case REGT_FLOAT:
-				return col+printf("f%d", p.RegNum);
+				return col+Printf("f%d", p.RegNum);
 			case REGT_STRING:
-				return col+printf("s%d", p.RegNum);
+				return col+Printf("s%d", p.RegNum);
 			case REGT_POINTER:
-				return col+printf("a%d", p.RegNum);
+				return col+Printf("a%d", p.RegNum);
 			case REGT_FLOAT | REGT_MULTIREG:
-				return col+printf("v%d", p.RegNum);
+				return col+Printf("v%d", p.RegNum);
 			case REGT_INT | REGT_KONST:
 				return col+print_reg(0, p.RegNum, MODE_KI, 0, func);
 			case REGT_FLOAT | REGT_KONST:
@@ -328,7 +385,11 @@ static int print_reg(int col, int arg, int mode, int immshift, const VMScriptFun
 			case REGT_FLOAT | REGT_MULTIREG | REGT_KONST:
 				return col+print_reg(0, p.RegNum, MODE_KV, 0, func);
 			default:
-				return col+printf("param[t=%d,%c,%c,n=%d]",
+				if (p.RegType == REGT_NIL)
+				{
+					return col+Printf("nil");
+				}
+				return col+Printf("param[t=%d,%c,%c,n=%d]",
 					p.RegType & REGT_TYPE,
 					p.RegType & REGT_KONST ? 'k' : 'r',
 					p.RegType & REGT_MULTIREG ? 'm' : 's',
@@ -337,7 +398,7 @@ static int print_reg(int col, int arg, int mode, int immshift, const VMScriptFun
 		}
 
 	default:
-		return col+printf("$%d", arg);
+		return col+Printf("$%d", arg);
 	}
 	return col;
 }