Sword2: PSX version support, and GMM loading/saving

svn-id: r39896

1 files changed, 95 insertions, 3 deletions

diff --git a/engines/sword2/layers.cpp b/engines/sword2/layers.cpp
index ba59889acb..c54003920f 100644
--- a/engines/sword2/layers.cpp
+++ b/engines/sword2/layers.cpp
@@ -179,7 +179,7 @@ void Screen::initBackground(int32 res, int32 new_palette) {
 	}
 
 	// Background parallax layers
-
+	
 	for (i = 0; i < 2; i++) {
 		if (screenLayerTable.bg_parallax[i])
 			initialiseBackgroundLayer(_vm->fetchBackgroundParallaxLayer(file, i));
@@ -188,11 +188,11 @@ void Screen::initBackground(int32 res, int32 new_palette) {
 	}
 
 	// Normal backround layer
-
+	
 	initialiseBackgroundLayer(_vm->fetchBackgroundLayer(file));
 
 	// Foreground parallax layers
-
+	
 	for (i = 0; i < 2; i++) {
 		if (screenLayerTable.fg_parallax[i])
 			initialiseBackgroundLayer(_vm->fetchForegroundParallaxLayer(file, i));
@@ -203,4 +203,96 @@ void Screen::initBackground(int32 res, int32 new_palette) {
 	_vm->_resman->closeResource(_thisScreen.background_layer_id);
 }
 
+/**
+ * This function is called when entering a new room, PSX edition
+ * @param res resource id of the normal background layer
+ * @param new_palette 1 for new palette, otherwise 0
+ */
+
+void Screen::initPsxBackground(int32 res, int32 new_palette) {
+	int i;
+
+	assert(res);
+
+	_vm->_sound->clearFxQueue(false);
+	waitForFade();
+
+	debug(1, "CHANGED TO LOCATION \"%s\"", _vm->_resman->fetchName(res));
+
+	_vm->_logic->writeVar(EXIT_CLICK_ID, 0);
+
+	// Close the previous screen, if one is open
+	if (_thisScreen.background_layer_id)
+		closeBackgroundLayer();
+
+	_thisScreen.background_layer_id = res;
+	_thisScreen.new_palette = new_palette;
+
+	// ok, now read the resource and pull out all the normal sort layer
+	// info/and set them up at the beginning of the sort list - why do it
+	// each cycle
+
+	byte *file = _vm->_resman->openResource(_thisScreen.background_layer_id);
+	ScreenHeader screen_head;
+
+	screen_head.read(_vm->fetchScreenHeader(file));
+	screen_head.height *= 2;
+
+	// set number of special sort layers
+	_thisScreen.number_of_layers = screen_head.noLayers;
+	_thisScreen.screen_wide = screen_head.width;
+	_thisScreen.screen_deep = screen_head.height;
+
+	debug(2, "layers=%d width=%d depth=%d", screen_head.noLayers, screen_head.width, screen_head.height);
+
+	// initialise the driver back buffer
+	setLocationMetrics(screen_head.width, screen_head.height);
+
+	for (i = 0; i < screen_head.noLayers; i++) {
+		debug(3, "init layer %d", i);
+
+		LayerHeader layer;
+
+		layer.read(_vm->fetchLayerHeader(file, i));
+		_sortList[i].layer_number = i + 1;
+		_sortList[i].sort_y = layer.y + layer.height;
+	}
+
+	// reset scroll offsets
+	_thisScreen.scroll_offset_x = 0;
+	_thisScreen.scroll_offset_y = 0;
+
+	if (screen_head.width > _screenWide || screen_head.height > _screenDeep) {
+		_thisScreen.scroll_flag = 2;
+
+		_thisScreen.max_scroll_offset_x = screen_head.width - _screenWide;
+		_thisScreen.max_scroll_offset_y = screen_head.height - (_screenDeep - (MENUDEEP * 2));
+	} else {
+		// The later fits on the phyiscal screen. Switch off scrolling.
+		_thisScreen.scroll_flag = 0;
+	}
+
+	resetRenderEngine();
+
+	// These are the physical screen coords where the system will try to
+	// maintain George's actual feet coords.
+
+	_thisScreen.feet_x = 320;
+	_thisScreen.feet_y = 340;
+
+	// Background parallax layers
+	initialisePsxParallaxLayer(_vm->fetchBackgroundParallaxLayer(file, 0));
+	initialisePsxParallaxLayer(NULL);
+
+	// Normal backround layer
+	initialisePsxBackgroundLayer(_vm->fetchBackgroundLayer(file));
+
+	// Foreground parallax layers
+	initialisePsxParallaxLayer(_vm->fetchForegroundParallaxLayer(file, 1));
+	initialisePsxParallaxLayer(NULL);
+
+	_vm->_resman->closeResource(_thisScreen.background_layer_id);
+
+}
+
 } // End of namespace Sword2