[Scummvm-cvs-logs] SF.net SVN: scummvm:[54793] scummvm/trunk/engines/mohawk

[fuzzie at users.sourceforge.net]

Revision: 54793
          http://scummvm.svn.sourceforge.net/scummvm/?rev=54793&view=rev
Author:   fuzzie
Date:     2010-12-05 22:11:07 +0000 (Sun, 05 Dec 2010)

Log Message:
-----------
MOHAWK: improve LBPaletteItem support

Modified Paths:
--------------
    scummvm/trunk/engines/mohawk/livingbooks.cpp
    scummvm/trunk/engines/mohawk/livingbooks.h

Modified: scummvm/trunk/engines/mohawk/livingbooks.cpp
===================================================================
--- scummvm/trunk/engines/mohawk/livingbooks.cpp	2010-12-05 22:10:50 UTC (rev 54792)
+++ scummvm/trunk/engines/mohawk/livingbooks.cpp	2010-12-05 22:11:07 UTC (rev 54793)
@@ -2573,6 +2573,7 @@
 
 LBPaletteItem::LBPaletteItem(MohawkEngine_LivingBooks *vm, Common::Rect rect) : LBItem(vm, rect) {
 	debug(3, "new LBPaletteItem");
+	_fadeInStart = 0;
 }
 
 void LBPaletteItem::readData(uint16 type, uint16 size, Common::SeekableSubReadStreamEndian *stream) {
@@ -2580,8 +2581,8 @@
 	case kLBPaletteXData:
 		{
 		assert(size == 8 + 255 * 4);
-		_start = stream->readUint16();
-		_count = stream->readUint16();
+		_fadeInPeriod = stream->readUint16();
+		_fadeInStep = stream->readUint16();
 		_drawStart = stream->readUint16();
 		_drawCount = stream->readUint16();
 		stream->read(_palette, 255 * 4);
@@ -2593,13 +2594,44 @@
 	}
 }
 
-void LBPaletteItem::draw() {
-	if (!_visible || !_globalVisible)
-		return;
+bool LBPaletteItem::togglePlaying(bool playing, bool restart) {
+	// TODO: this likely isn't the right place
 
-	_vm->_system->setPalette(_palette + _drawStart * 4, _drawStart, _drawCount);
+	if (playing) {
+		_fadeInStart = _vm->_system->getMillis();
+		_fadeInCurrent = 0;
+
+		return true;
+	}
+
+	return LBItem::togglePlaying(playing, restart);
 }
 
+void LBPaletteItem::update() {
+	if (_fadeInStart) {
+		uint32 elapsedTime = _vm->_system->getMillis() - _fadeInStart;
+		uint32 divTime = elapsedTime / _fadeInStep;
+
+		if (divTime > _fadeInPeriod)
+			divTime = _fadeInPeriod;
+
+		if (_fadeInCurrent != divTime) {
+			_fadeInCurrent = divTime;
+
+			// TODO: actual fading-in
+			if (_visible && _globalVisible)
+				_vm->_system->setPalette(_palette + _drawStart * 4, _drawStart, _drawCount);
+		}
+
+		if (elapsedTime >= (uint32)_fadeInPeriod * (uint32)_fadeInStep) {
+			// TODO: correct?
+			_fadeInStart = 0;
+		}
+	}
+
+	LBItem::update();
+}
+
 LBLiveTextItem::LBLiveTextItem(MohawkEngine_LivingBooks *vm, Common::Rect rect) : LBItem(vm, rect) {
 	_currentPhrase = 0xFFFF;
 	_currentWord = 0xFFFF;

Modified: scummvm/trunk/engines/mohawk/livingbooks.h
===================================================================
--- scummvm/trunk/engines/mohawk/livingbooks.h	2010-12-05 22:10:50 UTC (rev 54792)
+++ scummvm/trunk/engines/mohawk/livingbooks.h	2010-12-05 22:11:07 UTC (rev 54793)
@@ -365,10 +365,12 @@
 
 	void readData(uint16 type, uint16 size, Common::SeekableSubReadStreamEndian *stream);
 
-	void draw();
+	bool togglePlaying(bool playing, bool restart);
+	void update();
 
 protected:
-	uint16 _start, _count, _drawStart, _drawCount;
+	uint16 _fadeInPeriod, _fadeInStep, _drawStart, _drawCount;
+	uint32 _fadeInStart, _fadeInCurrent;
 	byte _palette[255 * 4];
 };
 


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