MADS: Fixes for reading in HOGANUS entries

3 files changed, 68 insertions, 6 deletions

diff --git a/engines/mads/nebular/dialogs_nebular.cpp b/engines/mads/nebular/dialogs_nebular.cpp
index 5aede49b90..cd7ab86590 100644
--- a/engines/mads/nebular/dialogs_nebular.cpp
+++ b/engines/mads/nebular/dialogs_nebular.cpp
@@ -31,6 +31,45 @@ namespace MADS {
 
 namespace Nebular {
 
+bool CopyProtectionDialog::show(MADSEngine *vm) {
+	CopyProtectionDialog *dlg = new CopyProtectionDialog(vm);
+
+	delete dlg;
+	return true;
+}
+
+CopyProtectionDialog::CopyProtectionDialog(MADSEngine *vm): _vm(vm) {
+	getHogAnusEntry(_hogEntry);
+}
+
+bool CopyProtectionDialog::getHogAnusEntry(HOGANUS &entry) {
+	File f;
+	f.open("*HOGANUS.DAT");
+
+	// Read in the total number of entries, and randomly pick an entry to use
+	int numEntries = f.readUint16LE();
+	int entryIndex = _vm->getRandomNumber(numEntries - 2) + 1;
+
+	// Read in the encrypted entry
+	f.seek(28 * entryIndex + 2);
+	byte entryData[28];
+	f.read(entryData, 28);
+
+	// Decrypt it
+	for (int i = 0; i < 28; ++i)
+		entryData[i] = ~entryData[i];
+
+	// Fill out the fields
+	entry._bookId = entryData[0];
+	entry._pageNum = READ_LE_UINT16(&entryData[2]);
+	entry._lineNum = READ_LE_UINT16(&entryData[4]);
+	entry._wordNum = READ_LE_UINT16(&entryData[6]);
+	entry._word = Common::String((char *)&entryData[8]);
+
+	f.close();
+	return true;
+}
+
 
 } // End of namespace Nebular
 
diff --git a/engines/mads/nebular/dialogs_nebular.h b/engines/mads/nebular/dialogs_nebular.h
index a747f7575d..6417c2cdc3 100644
--- a/engines/mads/nebular/dialogs_nebular.h
+++ b/engines/mads/nebular/dialogs_nebular.h
@@ -20,8 +20,8 @@
  *
  */
 
-#ifndef MADS_GAME_NEBULAR_H
-#define MADS_GAME_NEBULAR_H
+#ifndef MADS_DIALOGS_NEBULAR_H
+#define MADS_DIALOGS_NEBULAR_H
 
 #include "common/scummsys.h"
 #include "mads/game.h"
@@ -30,15 +30,37 @@ namespace MADS {
 
 namespace Nebular {
 
+struct HOGANUS {
+	int _bookId;
+	int _pageNum;
+	int _lineNum;
+	int _wordNum;
+	Common::String _word;
+};
+
 class CopyProtectionDialog {
 private:
+	MADSEngine *_vm;
+	HOGANUS _hogEntry;
+
+	/**
+	 * Constructor
+	 */
+	CopyProtectionDialog(MADSEngine *vm);
 
+	/**
+	 * Get a random copy protection entry from the HOGANUS resource
+	 */
+	bool getHogAnusEntry(HOGANUS &entry);
 public:
-	static bool show() { return false; }
+	/**
+	 * Show the dialog
+	 */
+	static bool show(MADSEngine *vm);
 };
 
 } // End of namespace Nebular
 
 } // End of namespace MADS
 
-#endif /* MADS_GAME_NEBULAR_H */
+#endif /* MADS_DIALOGS_NEBULAR_H */
diff --git a/engines/mads/nebular/game_nebular.cpp b/engines/mads/nebular/game_nebular.cpp
index 43d705fcf8..10c210c6eb 100644
--- a/engines/mads/nebular/game_nebular.cpp
+++ b/engines/mads/nebular/game_nebular.cpp
@@ -27,6 +27,7 @@
 #include "mads/graphics.h"
 #include "mads/msurface.h"
 #include "mads/nebular/game_nebular.h"
+#include "mads/nebular/dialogs_nebular.h"
 
 namespace MADS {
 
@@ -37,10 +38,10 @@ GameNebular::GameNebular(MADSEngine *vm): Game(vm) {
 }
 
 bool GameNebular::checkCopyProtection() {
-	if (!ConfMan.getBool("copy_protection") || (ConfMan.hasKey("passed_protection") &&
-			ConfMan.getInt("passed_protection") == 1))
+	if (!ConfMan.getBool("copy_protection"))
 		return true;
 
+	CopyProtectionDialog::show(_vm);
 	return false;
 }