[Scummvm-cvs-logs] SF.net SVN: scummvm: [28538] scummvm/trunk/engines/parallaction

[peres001 at users.sourceforge.net]

Revision: 28538
          http://scummvm.svn.sourceforge.net/scummvm/?rev=28538&view=rev
Author:   peres001
Date:     2007-08-12 01:26:20 -0700 (Sun, 12 Aug 2007)

Log Message:
-----------
Added very basic support for backgrounds larger than screen:
- background surfaces are now reallocated for every location
- screen is copied according to _scrollX/Y position

Modified Paths:
--------------
    scummvm/trunk/engines/parallaction/graphics.cpp
    scummvm/trunk/engines/parallaction/graphics.h

Modified: scummvm/trunk/engines/parallaction/graphics.cpp
===================================================================
--- scummvm/trunk/engines/parallaction/graphics.cpp	2007-08-11 21:08:08 UTC (rev 28537)
+++ scummvm/trunk/engines/parallaction/graphics.cpp	2007-08-12 08:26:20 UTC (rev 28538)
@@ -280,7 +280,7 @@
 }
 
 void Gfx::updateScreen() {
-	g_system->copyRectToScreen((const byte*)_buffers[kBitFront]->pixels, _vm->_screenWidth, 0, 0, _vm->_screenWidth, _vm->_screenHeight);
+	g_system->copyRectToScreen((const byte*)_buffers[kBitFront]->pixels, _buffers[kBitFront]->pitch, _screenX, _screenY, _vm->_screenWidth, _vm->_screenHeight);
 	g_system->updateScreen();
 	return;
 }
@@ -695,6 +695,10 @@
 
 void Gfx::setBackground(Graphics::Surface *surface) {
 	_buffers[kBit2] = surface;
+
+	_buffers[kBitFront]->create(surface->w, surface->h, 1);
+	_buffers[kBitBack]->create(surface->w, surface->h, 1);
+
 	copyScreen(kBit2, kBitBack);
 }
 
@@ -778,13 +782,15 @@
 	_buffers[kBitFront]->create(_vm->_screenWidth, _vm->_screenHeight, 1);
 	_buffers[kBitBack] = new Graphics::Surface;
 	_buffers[kBitBack]->create(_vm->_screenWidth, _vm->_screenHeight, 1);
-
 	_buffers[kBit2] = 0;
 
 	_depthMask = 0;
 
 	setPalette(_palette);
 
+	_screenX = 0;
+	_screenY = 0;
+
 	_bgLayers[0] = _bgLayers[1] = _bgLayers[2] = _bgLayers[3] = 0;
 
 	memset(_palettefx, 0, sizeof(_palettefx));

Modified: scummvm/trunk/engines/parallaction/graphics.h
===================================================================
--- scummvm/trunk/engines/parallaction/graphics.h	2007-08-11 21:08:08 UTC (rev 28537)
+++ scummvm/trunk/engines/parallaction/graphics.h	2007-08-12 08:26:20 UTC (rev 28538)
@@ -241,6 +241,9 @@
 	PaletteFxRange		_palettefx[6];
 	Palette				_palette;
 
+	uint				_screenX;		// scrolling position
+	uint				_screenY;
+
 protected:
 	Parallaction*		_vm;
 	Graphics::Surface	*_buffers[NUM_BUFFERS];


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