From a1f87fdaebc86be92b189086bba1dba0d3e049c6 Mon Sep 17 00:00:00 2001
From: uruk
Date: Mon, 29 Jul 2013 12:22:59 +0200
Subject: AVALANCHE: Modify Graphics and Lucerna, so the engine saves the
 background and redraws it every time before a sprite is drawn.

---
 engines/avalanche/graphics.cpp | 2 ++
 engines/avalanche/graphics.h   | 4 +++-
 engines/avalanche/lucerna2.cpp | 6 +++---
 3 files changed, 8 insertions(+), 4 deletions(-)

(limited to 'engines')

diff --git a/engines/avalanche/graphics.cpp b/engines/avalanche/graphics.cpp
index bed8136dd4..6338893dbf 100644
--- a/engines/avalanche/graphics.cpp
+++ b/engines/avalanche/graphics.cpp
@@ -62,6 +62,7 @@ void Graphics::init() {
 
 Graphics::~Graphics() {
 	_surface.free();
+	_background.free();
 }
 
 
@@ -85,6 +86,7 @@ void Graphics::drawBar(int16 x1, int16 y1, int16 x2, int16 y2, int16 color) {
 }
 
 void Graphics::drawSprite(const SpriteInfo &sprite, byte picnum, int16 x, int16 y) {
+	drawPicture(_background, 0, 10);
 
 	/* First we make the pixels of the spirte blank. */
 	for (byte qay = 0; qay < sprite.yl; qay++) {
diff --git a/engines/avalanche/graphics.h b/engines/avalanche/graphics.h
index 3d32bdafcb..d0adb17767 100644
--- a/engines/avalanche/graphics.h
+++ b/engines/avalanche/graphics.h
@@ -57,7 +57,9 @@ public:
 	static const int16 kScreenWidth = 640;
 	static const int16 kScreenHeight = 200;
 
-	
+	::Graphics::Surface _background;
+
+
 
 	Graphics(AvalancheEngine *vm);
 
diff --git a/engines/avalanche/lucerna2.cpp b/engines/avalanche/lucerna2.cpp
index eb5f5094c9..047301cf3e 100644
--- a/engines/avalanche/lucerna2.cpp
+++ b/engines/avalanche/lucerna2.cpp
@@ -245,11 +245,11 @@ void Lucerna::load(byte n) {     /* Load2, actually */
 	byte backgroundHeight = 8 * 12080 / _vm->_graphics->kScreenWidth; // With 640 width it's 151
 	// The 8 = number of bits in a byte, and 12080 comes from the original code (see above)
 
-	::Graphics::Surface background = _vm->_graphics->loadPictureRow(f, backgroundWidht, backgroundHeight);
+	_vm->_graphics->_background = _vm->_graphics->loadPictureRow(f, backgroundWidht, backgroundHeight);
 
-	_vm->_graphics->drawPicture(background, 0, 10);
+	_vm->_graphics->drawPicture(_vm->_graphics->_background, 0, 10);
 
-	background.free();
+	_vm->_graphics->refreshScreen();
 
 	f.close();
 
-- 
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