GLK: FROTZ: Force v6 games to 320x200

As much as I'd like to allow for variable resolution sizes,
the graphics in Zork Zero are geared specifically for a 320x200
screen. Maybe in the future I can allow for automatic stretching
to fit any screen size, but for now it's more important to get
the v6 games working at all

5 files changed, 30 insertions, 13 deletions

diff --git a/engines/glk/frotz/frotz.cpp b/engines/glk/frotz/frotz.cpp
index 8ec3db7133..0c33f417ec 100644
--- a/engines/glk/frotz/frotz.cpp
+++ b/engines/glk/frotz/frotz.cpp
@@ -24,6 +24,7 @@
 #include "glk/frotz/frotz_types.h"
 #include "glk/frotz/screen.h"
 #include "glk/frotz/quetzal.h"
+#include "engines/util.h"
 #include "common/config-manager.h"
 
 namespace Glk {
@@ -40,6 +41,19 @@ Frotz::~Frotz() {
 	reset_memory();
 }
 
+void Frotz::initGraphicsMode() {
+	_gameFile.seek(0);
+	byte version = _gameFile.readByte();
+
+	if (version == 6) {
+		// The V6 games have graphics that expect 320x200 mode
+		Graphics::PixelFormat pixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0);
+		initGraphics(320, 200, &pixelFormat);
+	} else {
+		GlkEngine::initGraphicsMode();
+	}
+}
+
 Screen *Frotz::createScreen() {
 	return new FrotzScreen();
 }
diff --git a/engines/glk/frotz/frotz.h b/engines/glk/frotz/frotz.h
index b5de82d7f8..8312e16b49 100644
--- a/engines/glk/frotz/frotz.h
+++ b/engines/glk/frotz/frotz.h
@@ -37,6 +37,11 @@ class Frotz : public Processor {
 	friend class FrotzScreen;
 protected:
 	/**
+	 * Setup the video mode
+	 */
+	virtual void initGraphicsMode();
+
+	/**
 	 * Create the screen class
 	 */
 	virtual Screen *createScreen() override;
diff --git a/engines/glk/frotz/glk_interface.cpp b/engines/glk/frotz/glk_interface.cpp
index 959ab31064..46a6caa707 100644
--- a/engines/glk/frotz/glk_interface.cpp
+++ b/engines/glk/frotz/glk_interface.cpp
@@ -350,13 +350,11 @@ void GlkInterface::gos_update_height() {
 
 void GlkInterface::reset_status_ht() {
 	uint height;
-	if (_wp._upper) {
+	if (_wp._upper && h_version != 6) {
 		glk_window_get_size(_wp._upper, nullptr, &height);
 		if ((uint)mach_status_ht != height) {
-			glk_window_set_arrangement(
-				glk_window_get_parent(_wp._upper),
-				winmethod_Above | winmethod_Fixed,
-				mach_status_ht, nullptr);
+			glk_window_set_arrangement(glk_window_get_parent(_wp._upper),
+				winmethod_Above | winmethod_Fixed, mach_status_ht, nullptr);
 		}
 	}
 }
diff --git a/engines/glk/frotz/screen.cpp b/engines/glk/frotz/screen.cpp
index 06b36167e8..f364a23142 100644
--- a/engines/glk/frotz/screen.cpp
+++ b/engines/glk/frotz/screen.cpp
@@ -42,9 +42,9 @@ void FrotzScreen::loadFonts(Common::Archive *archive) {
 	byte version = g_vm->_gameFile.readByte();
 
 	if (version == 6) {
-		// For graphical games, force both mono and proportinate fonts to be the same size.
-		// This simplifies calculation of pixels when setting window position and sizes
-		g_conf->_monoInfo._size = g_conf->_propInfo._size = MAX(g_conf->_monoInfo._size, g_conf->_propInfo._size);
+		// For graphical games, ignore any font configurations and force their size
+		g_conf->_monoInfo._size = g_conf->_propInfo._size = 7;
+		g_conf->_monoInfo._aspect = g_conf->_propInfo._aspect = 1.0;
 	}
 
 	// Load the basic fonts
diff --git a/engines/glk/glk.h b/engines/glk/glk.h
index 2782353547..17ee3568aa 100644
--- a/engines/glk/glk.h
+++ b/engines/glk/glk.h
@@ -72,11 +72,6 @@ private:
 	 * Handles basic initialization
 	 */
 	void initialize();
-
-	/**
-	 * Setup the video mode
-	 */
-	void initGraphicsMode();
 protected:
 	const GlkGameDescription _gameDescription;
 	Common::RandomSource _random;
@@ -92,6 +87,11 @@ protected:
 	virtual bool hasFeature(EngineFeature f) const;
 
 	/**
+	 * Setup the video mode
+	 */
+	virtual void initGraphicsMode();
+
+	/**
 	 * Create the screen
 	 */
 	virtual Screen *createScreen();