AGOS: Switch script debugging to debug flag, rather than level 4.

This is now set by --debugflags=script rather than -d 4, though
it will still require a debug level greater than 0.

engines/agos/agos.cpp

@@ -147,6 +147,7 @@ AGOSEngine::AGOSEngine(OSystem *system, const AGOSGameDescription *gd)
 
 	DebugMan.addDebugChannel(kDebugOpcode, "opcode", "Opcode debug level");
 	DebugMan.addDebugChannel(kDebugVGAOpcode, "vga_opcode", "VGA Opcode debug level");
+	DebugMan.addDebugChannel(kDebugScript, "script", "Script debug level");
 
 	_vcPtr = 0;
 	_vcGetOutOfCode = 0;
@@ -247,7 +248,6 @@ AGOSEngine::AGOSEngine(OSystem *system, const AGOSGameDescription *gd)
 
 	_backFlag = false;
 
-	_dumpScripts = false;
 	_dumpVgaScripts = false;
 	_dumpImages = false;
 
@@ -678,7 +678,6 @@ Common::Error AGOSEngine::init() {
 
 	// TODO: Use special debug levels instead of the following hack.
 	switch (gDebugLevel) {
-	case 4: _dumpScripts    = true; break;
 	case 5: _dumpVgaScripts = true; break;
 	}
 

engines/agos/agos.h

@@ -63,7 +63,8 @@ namespace AGOS {
 
 enum {
 	kDebugOpcode = 1 << 0,
-	kDebugVGAOpcode = 1 << 1
+	kDebugVGAOpcode = 1 << 1,
+	kDebugScript = 1 << 2
 };
 
 uint fileReadItemID(Common::SeekableReadStream *in);
@@ -332,7 +333,6 @@ class AGOSEngine : public Engine {
 	Common::Language _language;
 	bool _copyProtection;
 	bool _pause;
-	bool _dumpScripts;
 	bool _dumpVgaScripts;
 	bool _dumpImages;
 	bool _speech;

engines/agos/subroutine.cpp

@@ -20,8 +20,7 @@
  *
  */
 
-
-
+#include "common/debug-channels.h"
 #include "common/file.h"
 #include "common/textconsole.h"
 
@@ -531,7 +530,7 @@ int AGOSEngine::startSubroutine(Subroutine *sub) {
 	_classMode1 = 0;
 	_classMode2 = 0;
 
-	if (_dumpScripts)
+	if (DebugMan.isDebugChannelEnabled(kDebugScript))
 		dumpSubroutine(sub);
 
 	if (++_recursionDepth > 40)