Implement inventory scrolling for HoF.

svn-id: r31043

6 files changed, 175 insertions, 16 deletions

diff --git a/engines/kyra/gui_v2.cpp b/engines/kyra/gui_v2.cpp
index cfaa9f4d2c..43d480b142 100644
--- a/engines/kyra/gui_v2.cpp
+++ b/engines/kyra/gui_v2.cpp
@@ -26,6 +26,7 @@
 #include "kyra/kyra.h"
 #include "kyra/kyra_v2.h"
 #include "kyra/screen.h"
+#include "kyra/wsamovie.h"
 
 namespace Kyra {
 
@@ -370,13 +371,16 @@ int KyraEngine_v2::processButtonList(Button *buttonList, uint16 inputFlag) {
 		uint16 inFlags = inputFlag & 0xFF;
 		uint16 temp = 0;
 
-		if (inFlags == 199)
-			temp = 0x1000;
-		else if (inFlags == 198)
-			temp = 0x0100;
+		// this is NOT like in the original
+		// the original game somehow just enabled flag 0x1000 here
+		// but did some other magic, which looks like it depends on how the handle
+		// key input... so we just enable 0x1000 and 0x4000 here to allow
+		// all GUI buttons to work (for now at least...)
+		if (inFlags == 199 || inFlags == 198)
+			temp = 0x1000 | 0x4000;
 
-		if (inputFlag & 0x800)
-			temp <<= 2;
+		//if (inputFlag & 0x800)
+		//	temp <<= 2;
 
 		// the original did some flag hackery here, this works fine too
 		flags |= temp;
@@ -616,6 +620,24 @@ int KyraEngine_v2::buttonInventory(Button *button) {
 	return 0;
 }
 
+int KyraEngine_v2::scrollInventory(Button *button) {
+	uint16 *src = _mainCharacter.inventory;
+	uint16 *dst = &_mainCharacter.inventory[10];
+	uint16 temp[5];
+
+	memcpy(temp, src, sizeof(uint16)*5);
+	memcpy(src, src+5, sizeof(uint16)*5);
+	memcpy(src+5, dst, sizeof(uint16)*5);
+	memcpy(dst, dst+5, sizeof(uint16)*5);
+	memcpy(dst+5, temp, sizeof(uint16)*5);
+	_screen->hideMouse();
+	_screen->copyRegion(0x46, 0x90, 0x46, 0x90, 0x71, 0x2E, 0, 2);
+	_screen->showMouse();
+	redrawInventory(2);
+	scrollInventoryWheel();
+	return 0;
+}
+
 bool KyraEngine_v2::checkInventoryItemExchange(uint16 handItem, int slot) {
 	bool removeItem = false;
 	uint16 newItem = 0xFFFF;
@@ -662,5 +684,68 @@ void KyraEngine_v2::clearInventorySlot(int slot, int page) {
 	_screen->updateScreen();
 }
 
+void KyraEngine_v2::redrawInventory(int page) {
+	int pageBackUp = _screen->_curPage;
+	_screen->_curPage = page;
+
+	const uint16 *inventory = _mainCharacter.inventory;
+	_screen->hideMouse();
+	for (int i = 0; i < 10; ++i) {
+		clearInventorySlot(i, page);
+		if (inventory[i] != 0xFFFF) {
+			_screen->drawShape(page, getShapePtr(inventory[i]+64), _inventoryX[i], _inventoryY[i], 0, 0);
+			drawInventoryShape(page, inventory[i], i);
+		}
+	}
+	_screen->showMouse();
+	_screen->updateScreen();
+
+	_screen->_curPage = pageBackUp;
+}
+
+void KyraEngine_v2::scrollInventoryWheel() {
+	WSAMovieV2 movie(this);
+	movie.open("INVWHEEL.WSA", 0, 0);
+	int frames = movie.opened() ? movie.frames() : 6;
+	memcpy(_screenBuffer, _screen->getCPagePtr(2), 64000);
+	uint8 overlay[0x100];
+	_screen->generateOverlay(_screen->getPalette(0), overlay, 0, 32);
+	_screen->hideMouse();
+	_screen->copyRegion(0x46, 0x90, 0x46, 0x79, 0x71, 0x17, 0, 2);
+	_screen->showMouse();
+	snd_playSoundEffect(0x25);
+
+	movie.setDrawPage(0);
+	movie.setX(0);
+	movie.setY(0);
+
+	bool breakFlag = false;
+	for (int i = 0; i <= 6 && !breakFlag; ++i) {
+		if (movie.opened()) {
+			_screen->hideMouse();
+			movie.displayFrame(i % frames, 0, 0);
+			_screen->showMouse();
+			_screen->updateScreen();
+		}
+
+		uint32 endTime = _system->getMillis() + _tickLength;
+
+		int y = (i * 981) >> 8;
+		if (y >= 23 || i == 6) {
+			y = 23;
+			breakFlag = true;
+		}
+
+		_screen->applyOverlay(0x46, 0x79, 0x71, 0x17, 2, overlay);
+		_screen->copyRegion(0x46, y+0x79, 0x46, 0x90, 0x71, 0x2E, 2, 0);
+		_screen->updateScreen();
+
+		delayUntil(endTime);
+	}
+
+	_screen->copyBlockToPage(2, 0, 0, 320, 200, _screenBuffer);
+	movie.close();
+}
+
 } // end of namespace Kyra
 
diff --git a/engines/kyra/kyra_v2.h b/engines/kyra/kyra_v2.h
index 3fec195d60..c9e54b57e9 100644
--- a/engines/kyra/kyra_v2.h
+++ b/engines/kyra/kyra_v2.h
@@ -563,6 +563,8 @@ protected:
 	bool checkInventoryItemExchange(uint16 item, int slot);
 	void drawInventoryShape(int page, uint16 item, int slot);
 	void clearInventorySlot(int slot, int page);
+	void redrawInventory(int page);
+	void scrollInventoryWheel();
 
 	// gui
 	void loadButtonShapes();
@@ -610,6 +612,7 @@ protected:
 	Button *addButtonToList(Button *list, Button *newButton);
 	int processButtonList(Button *button, uint16 inputFlag);
 
+	int scrollInventory(Button *button);
 	int buttonInventory(Button *button);
 
 	// localization
diff --git a/engines/kyra/screen_v2.cpp b/engines/kyra/screen_v2.cpp
index 2bec373266..ab46dce6f3 100644
--- a/engines/kyra/screen_v2.cpp
+++ b/engines/kyra/screen_v2.cpp
@@ -84,12 +84,81 @@ void Screen_v2::generateGrayOverlay(const uint8 *srcPal, uint8 *grayOverlay, int
 		grayOverlay[i] = findLeastDifferentColor(tmpPal + 3 * i, srcPal, lastColor);
 }
 
-void Screen_v2::applyGrayOverlay(int x, int y, int w, int h, int pageNum, const uint8 *grayOverlay) {
+uint8 *Screen_v2::generateOverlay(const uint8 *palette, uint8 *buffer, int startColor, int fac) {
+	if (!palette || !buffer)
+		return buffer;
+
+	fac = MIN(0xFF, fac);
+
+	byte col1, col2, col3;
+	col1 = palette[startColor * 3 + 0];
+	col2 = palette[startColor * 3 + 1];
+	col3 = palette[startColor * 3 + 2];
+	*buffer = 0;
+
+	uint8 *dst = buffer + 1;
+	for (int i = 1; i != 255; ++i) {
+		byte procCol1, procCol2, procCol3;
+		const uint8 *src = palette + i*3;
+		const int factor = (fac >> 1) & 0xFF;
+		byte col;
+		
+		col = *src++;
+		col -= ((((col - col1) * factor) << 1) >> 8) & 0xFF;
+		procCol1 = col;
+
+		col = *src++;
+		col -= ((((col - col2) * factor) << 1) >> 8) & 0xFF;
+		procCol2 = col;
+
+		col = *src++;
+		col -= ((((col - col3) * factor) << 1) >> 8) & 0xFF;
+		procCol3 = col;
+
+		uint16 minValue = 0xFFFF;
+		uint8 colorNumber = startColor;
+		const uint8 *pal = palette + 3;
+		for (int count = 0xFF, cur = 1; count > 0; --count, ++cur) {
+			pal += 3;
+			if (cur != i) {
+				uint16 value = 0;
+				pal -= 3;
+				col = *pal++ - procCol1;
+				col *= col;
+				value += col;
+
+				col = *pal++ - procCol2;
+				col *= col;
+				value += col;
+
+				col = *pal++ - procCol3;
+				col *= col;
+				value += col;
+
+				if (value == 0) {
+					colorNumber = i;
+					break;
+				} else if (value < minValue) {
+					minValue = value;
+					colorNumber = cur;
+				}
+			}
+		}
+
+		*dst++ = colorNumber;
+	}
+
+	return buffer;
+}
+
+void Screen_v2::applyOverlay(int x, int y, int w, int h, int pageNum, const uint8 *overlay) {
 	uint8 * dst = getPagePtr(pageNum) + y * 320 + x;
 	while (h--) {
-		for (int wi = 0; wi < 320; wi++)
-			dst[wi] = grayOverlay[dst[wi]];
-		dst += 320;
+		for (int wi = 0; wi < w; ++wi) {
+			uint8 index = *dst;
+			*dst++ = overlay[index];
+		}
+		dst += 320 - w;
 	}
 }
 
diff --git a/engines/kyra/screen_v2.h b/engines/kyra/screen_v2.h
index b31b1de46a..a00cad6b18 100644
--- a/engines/kyra/screen_v2.h
+++ b/engines/kyra/screen_v2.h
@@ -43,7 +43,6 @@ public:
 
 	// sequence player
 	void generateGrayOverlay(const uint8 *srcPal, uint8 *grayOverlay, int factor, int addR, int addG, int addB, int lastColor, bool flag);
-	void applyGrayOverlay(int x, int y, int w, int h, int pageNum, const uint8 *grayOverlay);
 	int findLeastDifferentColor(const uint8 *paletteEntry, const uint8 *palette, uint16 numColors);
 	bool calcBounds(int w0, int h0, int &x1, int &y1, int &w1, int &h1, int &x2, int &y2, int &w2);
 	void wsaFrameAnimationStep(int x1, int y1, int x2, int y2, int w1, int h1, int w2, int h2,	int srcPage, int dstPage, int dim);
@@ -55,6 +54,9 @@ public:
 	void copyWsaRect(int x, int y, int w, int h, int dimState, int plotFunc, const uint8 *src,
 					int unk1, const uint8 *unkPtr1, const uint8 *unkPtr2);
 
+	uint8 *generateOverlay(const uint8 *palette, uint8 *buffer, int color, int factor);
+	void applyOverlay(int x, int y, int w, int h, int pageNum, const uint8 *overlay);
+
 	// shape handling
 	uint8 *getPtrToShape(uint8 *shpFile, int shape);
 	const uint8 *getPtrToShape(const uint8 *shpFile, int shape);
diff --git a/engines/kyra/sequences_v2.cpp b/engines/kyra/sequences_v2.cpp
index e14e78bc42..57773bb107 100644
--- a/engines/kyra/sequences_v2.cpp
+++ b/engines/kyra/sequences_v2.cpp
@@ -405,7 +405,7 @@ int KyraEngine_v2::seq_introOverview(WSAMovieV2 *wsaObj, int x, int y, int frm)
 		case 201:
 			_screen->setScreenPalette(_screen->getPalette(2));
 			_screen->updateScreen();
-			_screen->applyGrayOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
+			_screen->applyOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
 			_screen->copyPage(2, 12);
 			_screen->copyRegion(0, 0, 0, 0, 320, 200, 2, 0);
 			_screen->setScreenPalette(_screen->getPalette(0));
@@ -472,7 +472,7 @@ int KyraEngine_v2::seq_introLibrary(WSAMovieV2 *wsaObj, int x, int y, int frm) {
 			seq_waitForTextsTimeout();
 
 			_screen->copyPage(12, 2);
-			_screen->applyGrayOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
+			_screen->applyOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
 			_screen->copyRegion(0, 0, 0, 0, 320, 200, 2, 0);
 			_screen->updateScreen();
 			_screen->copyPage(2, 12);
@@ -493,7 +493,7 @@ int KyraEngine_v2::seq_introLibrary(WSAMovieV2 *wsaObj, int x, int y, int frm) {
 
 		case 340:
 			seq_resetActiveWSA(0);
-			_screen->applyGrayOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
+			_screen->applyOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
 			_screen->copyPage(2, 12);
 			_screen->copyRegion(0, 0, 0, 0, 320, 200, 2, 0);
 			_screen->updateScreen();
@@ -548,7 +548,7 @@ int KyraEngine_v2::seq_introHand(WSAMovieV2 *wsaObj, int x, int y, int frm) {
 
 		case 201:
 			seq_waitForTextsTimeout();
-			_screen->applyGrayOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
+			_screen->applyOverlay(0, 0, 320, 200, 2, _screen->getPalette(3));
 			_screen->copyPage(2, 12);
 			_screen->copyRegion(0, 0, 0, 0, 320, 200, 2, 0);
 			_screen->updateScreen();
diff --git a/engines/kyra/staticres.cpp b/engines/kyra/staticres.cpp
index cded12e8a9..8517332906 100644
--- a/engines/kyra/staticres.cpp
+++ b/engines/kyra/staticres.cpp
@@ -1452,7 +1452,7 @@ void KyraEngine_v2::initMainButtonList() {
 		{ 0, 0x2, 0x00, 0, 1, 1, 1, 0x4487, 0, 0, 0, 0, 0x104, 0x90, 0x3C, 0x2C, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, /*&KyraEngine_v2::sub_27037*/0 },
 		{ 0, 0x5, 0x00, 0, 1, 1, 1, 0x4487, 0, 0, 0, 0, 0x0FA, 0x90, 0x0A, 0x2C, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, /*&KyraEngine_v2::sub_27032*/0 },
 		{ 0, 0x3, 0x00, 0, 1, 1, 1, 0x4487, 0, 0, 0, 0, 0x0CE, 0x90, 0x2C, 0x2C, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, /*&KyraEngine_v2::gui_showBook*/0 },
-		{ 0, 0x4, 0x00, 0, 1, 1, 1, 0x4487, 0, 0, 0, 0, 0x0B6, 0x9D, 0x18, 0x1E, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, /*&KyraEngine_v2::sub_2735E*/0 },
+		{ 0, 0x4, 0x00, 0, 1, 1, 1, 0x4487, 0, 0, 0, 0, 0x0B6, 0x9D, 0x18, 0x1E, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, &KyraEngine_v2::scrollInventory },
 		{ 0, 0x6, 0x00, 0, 0, 0, 0, 0x1100, 0, 0, 0, 0, 0x04D, 0x92, 0x13, 0x15, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, &KyraEngine_v2::buttonInventory },
 		{ 0, 0x7, 0x00, 0, 0, 0, 0, 0x1100, 0, 0, 0, 0, 0x061, 0x92, 0x13, 0x15, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, &KyraEngine_v2::buttonInventory },
 		{ 0, 0x8, 0x00, 0, 0, 0, 0, 0x1100, 0, 0, 0, 0, 0x075, 0x92, 0x13, 0x15, 0xC7, 0xCF, 0xC7, 0xCF, 0xC7, 0xCF, 0, &KyraEngine_v2::buttonInventory },