DIRECTOR: Lingo: Split out opcodes from actual function implementations

3 files changed, 318 insertions, 263 deletions

diff --git a/engines/director/lingo/lingo-code.cpp b/engines/director/lingo/lingo-code.cpp
new file mode 100644
index 0000000000..a77d6fc01e
--- /dev/null
+++ b/engines/director/lingo/lingo-code.cpp
@@ -0,0 +1,317 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+// Heavily inspired by hoc
+// Copyright (C) AT&T 1995
+// All Rights Reserved
+//
+// Permission to use, copy, modify, and distribute this software and
+// its documentation for any purpose and without fee is hereby
+// granted, provided that the above copyright notice appear in all
+// copies and that both that the copyright notice and this
+// permission notice and warranty disclaimer appear in supporting
+// documentation, and that the name of AT&T or any of its entities
+// not be used in advertising or publicity pertaining to
+// distribution of the software without specific, written prior
+// permission.
+//
+// AT&T DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+// INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+// IN NO EVENT SHALL AT&T OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+// SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+// ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+// THIS SOFTWARE.
+
+#include "engines/director/lingo/lingo.h"
+#include "common/file.h"
+#include "audio/decoders/wave.h"
+
+#include "director/lingo/lingo-gr.h"
+
+namespace Director {
+
+void Lingo::execute(int pc) {
+	for(_pc = pc; (*_currentScript)[_pc] != STOP;) {
+		_pc++;
+		(*((*_currentScript)[_pc - 1]))();
+	}
+}
+
+void Lingo::push(Datum d) {
+	_stack.push_back(d);
+}
+
+Datum Lingo::pop(void) {
+	if (_stack.size() == 0)
+		error("stack underflow");
+
+	Datum ret = _stack.back();
+	_stack.pop_back();
+
+	return ret;
+}
+
+void Lingo::func_xpop() {
+	g_lingo->pop();
+}
+
+void Lingo::func_printtop(void) {
+	Datum d = g_lingo->pop();
+
+	warning("%d", d.val);
+}
+
+void Lingo::func_constpush() {
+	Datum d;
+	inst i = (*g_lingo->_currentScript)[g_lingo->_pc++];
+	d.val = READ_LE_UINT32(&i);
+	g_lingo->push(d);
+}
+
+void Lingo::func_varpush() {
+	Datum d;
+	Symbol *sym;
+	char *name = (char *)&(*g_lingo->_currentScript)[g_lingo->_pc];
+
+	if (!g_lingo->_vars.contains(name)) { // Create variable if it was not defined
+		sym = new Symbol;
+		sym->name = (char *)calloc(strlen(name) + 1, 1);
+		Common::strlcpy(sym->name, name, strlen(name) + 1);
+		sym->type = UNDEF;
+		sym->u.val = 0;
+
+		g_lingo->_vars[name] = sym;
+	} else {
+		sym = g_lingo->_vars[name];
+	}
+
+	d.sym = sym;
+
+	g_lingo->_pc += g_lingo->calcStringAlignment(name);
+
+	g_lingo->push(d);
+}
+
+void Lingo::func_assign() {
+	Datum d1, d2;
+	d1 = g_lingo->pop();
+	d2 = g_lingo->pop();
+
+	if (d1.sym->type != VAR && d1.sym->type != UNDEF) {
+		warning("assignment to non-variable '%s'", d1.sym->name);
+		return;
+	}
+
+	d1.sym->u.val = d2.val;
+	d1.sym->type = VAR;
+	g_lingo->push(d2);
+}
+
+bool Lingo::verify(Symbol *s) {
+	if (s->type != VAR && s->type != UNDEF) {
+		warning("attempt to evaluate non-variable '%s'", s->name);
+
+		return false;
+	}
+
+	if (s->type == UNDEF) {
+		warning("undefined variable '%s'", s->name);
+
+		return false;
+	}
+
+	return true;
+}
+
+void Lingo::func_eval() {
+	Datum d;
+	d = g_lingo->pop();
+
+	if (!g_lingo->verify(d.sym))
+		return;
+
+	d.val = d.sym->u.val;
+
+	g_lingo->push(d);
+}
+
+void Lingo::func_add() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val += d2.val;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_sub() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val -= d2.val;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_mul() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val *= d2.val;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_div() {
+	Datum d2 = g_lingo->pop();
+
+	if (d2.val == 0)
+		error("division by zero");
+
+	Datum d1 = g_lingo->pop();
+
+	d1.val /= d2.val;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_negate() {
+	Datum d = g_lingo->pop();
+
+	d.val -= d.val;
+	g_lingo->push(d);
+}
+
+void Lingo::func_eq() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val == d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_neq() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val != d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_gt() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val > d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_lt() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val < d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_ge() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val >= d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+void Lingo::func_le() {
+	Datum d2 = g_lingo->pop();
+	Datum d1 = g_lingo->pop();
+
+	d1.val = (d1.val <= d2.val) ? 1 : 0;
+	g_lingo->push(d1);
+}
+
+
+void Lingo::func_ifcode() {
+	Datum d;
+	int savepc = g_lingo->_pc;	/* then part */
+
+	int then = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc]);
+	int elsep = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc + 1]);
+	int end = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc + 2]);
+
+	warning("cond: %d end: %d  then: %d elesp: %d", savepc + 3, end, then, elsep);
+
+	g_lingo->execute(savepc + 3);	/* condition */
+
+	d = g_lingo->pop();
+	warning("res: %d", d.val);
+
+	if (d.val) {
+		g_lingo->execute(then);
+	} else if (elsep) { /* else part? */
+		g_lingo->execute(elsep);
+	}
+
+	//if (!returning)
+	g_lingo->_pc = end; /* next stmt */
+}
+
+//************************
+// Built-in functions
+//************************
+void Lingo::func_mci() {
+	Common::String s((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
+
+	g_lingo->exec_mci(s);
+
+	g_lingo->_pc += g_lingo->calcStringAlignment(s.c_str());
+}
+
+void Lingo::func_mciwait() {
+	Common::String s((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
+
+	g_lingo->exec_mciwait(s);
+
+	g_lingo->_pc += g_lingo->calcStringAlignment(s.c_str());
+}
+
+void Lingo::func_goto() {
+	Common::String frame((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
+	g_lingo->_pc += g_lingo->calcStringAlignment(frame.c_str());
+
+	Common::String movie((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
+	g_lingo->_pc += g_lingo->calcStringAlignment(movie.c_str());
+
+	g_lingo->exec_goto(frame, movie);
+}
+
+void Lingo::func_gotoloop() {
+	warning("STUB: func_gotoloop()");
+}
+
+void Lingo::func_gotonext() {
+	warning("STUB: func_gotonext()");
+}
+
+void Lingo::func_gotoprevious() {
+	warning("STUB: func_gotoprevious()");
+}
+
+}
diff --git a/engines/director/lingo/lingo-funcs.cpp b/engines/director/lingo/lingo-funcs.cpp
index f9f2e5cdef..6fbd35c7cb 100644
--- a/engines/director/lingo/lingo-funcs.cpp
+++ b/engines/director/lingo/lingo-funcs.cpp
@@ -193,267 +193,4 @@ void Lingo::exec_goto(Common::String &frame, Common::String &movie) {
 	warning("STUB: go to %s movie %s", frame.c_str(), movie.c_str());
 }
 
-void Lingo::execute(int pc) {
-	for(_pc = pc; (*_currentScript)[_pc] != STOP;) {
-		_pc++;
-		(*((*_currentScript)[_pc - 1]))();
-	}
-}
-
-void Lingo::push(Datum d) {
-	_stack.push_back(d);
-}
-
-Datum Lingo::pop(void) {
-	if (_stack.size() == 0)
-		error("stack underflow");
-
-	Datum ret = _stack.back();
-	_stack.pop_back();
-
-	return ret;
-}
-
-void Lingo::func_xpop() {
-	g_lingo->pop();
-}
-
-void Lingo::func_printtop(void) {
-	Datum d = g_lingo->pop();
-
-	warning("%d", d.val);
-}
-
-void Lingo::func_constpush() {
-	Datum d;
-	inst i = (*g_lingo->_currentScript)[g_lingo->_pc++];
-	d.val = READ_LE_UINT32(&i);
-	g_lingo->push(d);
-}
-
-void Lingo::func_varpush() {
-	Datum d;
-	Symbol *sym;
-	char *name = (char *)&(*g_lingo->_currentScript)[g_lingo->_pc];
-
-	if (!g_lingo->_vars.contains(name)) { // Create variable if it was not defined
-		sym = new Symbol;
-		sym->name = (char *)calloc(strlen(name) + 1, 1);
-		Common::strlcpy(sym->name, name, strlen(name) + 1);
-		sym->type = UNDEF;
-		sym->u.val = 0;
-
-		g_lingo->_vars[name] = sym;
-	} else {
-		sym = g_lingo->_vars[name];
-	}
-
-	d.sym = sym;
-
-	g_lingo->_pc += g_lingo->calcStringAlignment(name);
-
-	g_lingo->push(d);
-}
-
-void Lingo::func_assign() {
-	Datum d1, d2;
-	d1 = g_lingo->pop();
-	d2 = g_lingo->pop();
-
-	if (d1.sym->type != VAR && d1.sym->type != UNDEF) {
-		warning("assignment to non-variable '%s'", d1.sym->name);
-		return;
-	}
-
-	d1.sym->u.val = d2.val;
-	d1.sym->type = VAR;
-	g_lingo->push(d2);
-}
-
-bool Lingo::verify(Symbol *s) {
-	if (s->type != VAR && s->type != UNDEF) {
-		warning("attempt to evaluate non-variable '%s'", s->name);
-
-		return false;
-	}
-
-	if (s->type == UNDEF) {
-		warning("undefined variable '%s'", s->name);
-
-		return false;
-	}
-
-	return true;
-}
-
-void Lingo::func_eval() {
-	Datum d;
-	d = g_lingo->pop();
-
-	if (!g_lingo->verify(d.sym))
-		return;
-
-	d.val = d.sym->u.val;
-
-	g_lingo->push(d);
-}
-
-void Lingo::func_add() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val += d2.val;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_sub() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val -= d2.val;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_mul() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val *= d2.val;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_div() {
-	Datum d2 = g_lingo->pop();
-
-	if (d2.val == 0)
-		error("division by zero");
-
-	Datum d1 = g_lingo->pop();
-
-	d1.val /= d2.val;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_negate() {
-	Datum d = g_lingo->pop();
-
-	d.val -= d.val;
-	g_lingo->push(d);
-}
-
-void Lingo::func_eq() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val == d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_neq() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val != d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_gt() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val > d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_lt() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val < d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_ge() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val >= d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-void Lingo::func_le() {
-	Datum d2 = g_lingo->pop();
-	Datum d1 = g_lingo->pop();
-
-	d1.val = (d1.val <= d2.val) ? 1 : 0;
-	g_lingo->push(d1);
-}
-
-
-void Lingo::func_ifcode() {
-	Datum d;
-	int savepc = g_lingo->_pc;	/* then part */
-
-	int then = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc]);
-	int elsep = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc + 1]);
-	int end = READ_LE_UINT32(&(*g_lingo->_currentScript)[savepc + 2]);
-
-	warning("cond: %d end: %d  then: %d elesp: %d", savepc + 3, end, then, elsep);
-
-	g_lingo->execute(savepc + 3);	/* condition */
-
-	d = g_lingo->pop();
-	warning("res: %d", d.val);
-
-	if (d.val) {
-		g_lingo->execute(then);
-	} else if (elsep) { /* else part? */
-		g_lingo->execute(elsep);
-	}
-
-	//if (!returning)
-	g_lingo->_pc = end; /* next stmt */
-}
-
-//************************
-// Built-in functions
-//************************
-void Lingo::func_mci() {
-	Common::String s((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
-
-	g_lingo->exec_mci(s);
-
-	g_lingo->_pc += g_lingo->calcStringAlignment(s.c_str());
-}
-
-void Lingo::func_mciwait() {
-	Common::String s((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
-
-	g_lingo->exec_mciwait(s);
-
-	g_lingo->_pc += g_lingo->calcStringAlignment(s.c_str());
-}
-
-void Lingo::func_goto() {
-	Common::String frame((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
-	g_lingo->_pc += g_lingo->calcStringAlignment(frame.c_str());
-
-	Common::String movie((char *)&(*g_lingo->_currentScript)[g_lingo->_pc]);
-	g_lingo->_pc += g_lingo->calcStringAlignment(movie.c_str());
-
-	g_lingo->exec_goto(frame, movie);
-}
-
-void Lingo::func_gotoloop() {
-	warning("STUB: func_gotoloop()");
-}
-
-void Lingo::func_gotonext() {
-	warning("STUB: func_gotonext()");
-}
-
-void Lingo::func_gotoprevious() {
-	warning("STUB: func_gotoprevious()");
-}
-
 }
diff --git a/engines/director/module.mk b/engines/director/module.mk
index 0d46b09890..d903223f15 100644
--- a/engines/director/module.mk
+++ b/engines/director/module.mk
@@ -10,6 +10,7 @@ MODULE_OBJS = \
 	sound.o \
 	lingo/lingo-gr.o \
 	lingo/lingo.o \
+	lingo/lingo-code.o \
 	lingo/lingo-funcs.o \
 	lingo/lingo-lex.o