CGE: Fix for HLINE not being available for demo

The HorizLine class is really only used for on-screen debugging information anyway, so it's not a problem.

3 files changed, 17 insertions, 8 deletions

diff --git a/engines/cge/cge.cpp b/engines/cge/cge.cpp
index cfd941017e..936aeea75a 100644
--- a/engines/cge/cge.cpp
+++ b/engines/cge/cge.cpp
@@ -131,7 +131,7 @@ void CGEEngine::setup() {
 	_pocLight = new PocLight(this);
 	for (int i = 0; i < kPocketNX; i++)
 		_pocket[i] = NULL;
-	_horzLine = new HorizLine(this);
+	_horzLine = isDemo() ? NULL : new HorizLine(this);
 	_infoLine = new InfoLine(this, kInfoW);
 	_cavLight = new CavLight(this);
 	_debugLine = new InfoLine(this, kScrWidth);
@@ -247,4 +247,8 @@ bool CGEEngine::canSaveGameStateCurrently() {
 	return (_startupMode == 0) && _mouse->_active;
 }
 
+bool CGEEngine::isDemo() const {
+	return _gameDescription->flags & ADGF_DEMO;
+}
+
 } // End of namespace CGE
diff --git a/engines/cge/cge.h b/engines/cge/cge.h
index bd347c6e26..8aff3334a0 100644
--- a/engines/cge/cge.h
+++ b/engines/cge/cge.h
@@ -104,6 +104,7 @@ public:
 	virtual bool hasFeature(EngineFeature f) const;
 	virtual bool canLoadGameStateCurrently();
 	virtual bool canSaveGameStateCurrently();
+	bool isDemo() const;
 	virtual Common::Error loadGameState(int slot);
 	virtual Common::Error saveGameState(int slot, const Common::String &desc);
 
diff --git a/engines/cge/cge_main.cpp b/engines/cge/cge_main.cpp
index 1dd6e49650..24cdaf5e92 100644
--- a/engines/cge/cge_main.cpp
+++ b/engines/cge/cge_main.cpp
@@ -651,7 +651,7 @@ void CGEEngine::caveDown() {
 	debugC(1, kCGEDebugEngine, "CGEEngine::caveDown()");
 
 	Sprite *spr;
-	if (!_horzLine->_flags._hide)
+	if (_horzLine && !_horzLine->_flags._hide)
 		switchMapping();
 
 	for (spr = _vga->_showQ->first(); spr;) {
@@ -858,7 +858,7 @@ void System::touch(uint16 mask, int x, int y) {
 			if (cav && _snail->idle() && _hero->_tracePtr < 0)
 				_vm->switchCave(cav);
 
-			if (!_horzLine->_flags._hide) {
+			if (_horzLine && !_horzLine->_flags._hide) {
 				if (y >= kMapTop && y < kMapTop + kMapHig) {
 					int8 x1, z1;
 					XZ(x, y).split(x1, z1);
@@ -958,9 +958,10 @@ void CGEEngine::takeName() {
 }
 
 void CGEEngine::switchMapping() {
+	assert(_horzLine);
 	debugC(1, kCGEDebugEngine, "CGEEngine::switchMapping()");
 
-	if (_horzLine->_flags._hide) {
+	if (_horzLine && _horzLine->_flags._hide) {
 		int i;
 		for (i = 0; i < kMapZCnt; i++) {
 			int j;
@@ -1559,9 +1560,11 @@ void CGEEngine::runGame() {
 	_debugLine->_z = 126;
 	_vga->_showQ->insert(_debugLine);
 
-	_horzLine->_y = kMapTop - (kMapTop > 0);
-	_horzLine->_z = 126;
-	_vga->_showQ->insert(_horzLine);
+	if (_horzLine) {
+		_horzLine->_y = kMapTop - (kMapTop > 0);
+		_horzLine->_z = 126;
+		_vga->_showQ->insert(_horzLine);
+	}
 
 	_mouse->_busy = _vga->_spareQ->locate(kBusyRef);
 	if (_mouse->_busy)
@@ -1739,7 +1742,8 @@ void CGEEngine::cge_main() {
 		_mode = 2;
 
 	_debugLine->_flags._hide = true;
-	_horzLine->_flags._hide = true;
+	if (_horzLine)
+		_horzLine->_flags._hide = true;
 
 	if (_music && _soundOk)
 		_midiPlayer.loadMidi(0);