Update README.md

README.md

@@ -32,6 +32,12 @@ mkdir build && cd build
 cmake .. -B .
 make -j4
 ```
+or
+```
+mkdir build && cd build
+cmake --build . --config Release -j 10
+```
+
 ## Visual Studio
 
 1. Open the repository folder in **Visual Studio**.  
@@ -40,17 +46,28 @@ make -j4
 4. Press **Run** (or F5) to build and launch the game.
 
 ## Android
-Download [r14b Android NDK](http://dl.google.com/android/repository/android-ndk-r14b-windows-x86_64.zip) and run `build.ps1`:
-```
+
+1. Download **Android NDK r14b**:  
+   http://dl.google.com/android/repository/android-ndk-r14b-windows-x86_64.zip
+
+2. Extract it to the root of your `C:` drive so the path becomes:
+
+   ```
+   C:\android-ndk-r14b
+   ```
+
+3. Run the build script:
+
+```powershell
 # Full build (NDK + Java + APK + install)
 .\build.ps1
 
-# Skip NDK recompile (Java/assets changed only)
-.\build.ps1 -NoJava
-
-# Skip Java recompile (C++ changed only)  
+# Skip C++ compilation (Java/assets changed only)
 .\build.ps1 -NoCpp
 
-# Only repackage + install (no recompile at all)
+# Skip Java compilation (C++ changed only)
+.\build.ps1 -NoJava
+
+# Only repackage + install (no compilation)
 .\build.ps1 -NoBuild
 ```

src/client/gui/Screen.cpp

@@ -78,6 +78,14 @@ void Screen::updateEvents()
 void Screen::mouseEvent()
 {
 	const MouseAction& e = Mouse::getEvent();
+	// forward wheel events to subclasses
+	if (e.action == MouseAction::ACTION_WHEEL) {
+		int xm = e.x * width / minecraft->width;
+		int ym = e.y * height / minecraft->height - 1;
+		mouseWheel(e.dx, e.dy, xm, ym);
+		return;
+	}
+
 	if (!e.isButton())
 		return;
 

src/client/gui/Screen.h

@@ -57,6 +57,9 @@ protected:
 	virtual void mouseClicked(int x, int y, int buttonNum);
 	virtual void mouseReleased(int x, int y, int buttonNum);
 
+	// mouse wheel movement (dx/dy are wheel deltas, xm/ym are GUI coords)
+	virtual void mouseWheel(int dx, int dy, int xm, int ym) {}
+
 	virtual void keyPressed(int eventKey);
 	virtual void keyboardNewChar(char inputChar) {}
 public:

src/client/gui/components/ScrollingPane.cpp

@@ -548,6 +548,14 @@ void ScrollingPane::stepThroughDecelerationAnimation(bool noAnimation) {
 	}
 }
 
+void ScrollingPane::scrollBy(float dx, float dy) {
+	// adjust the translation offsets fpx/fpy by the requested amount
+	float nfpx = fpx + dx;
+	float nfpy = fpy + dy;
+	// convert back to content offset (fpx = -contentOffset.x)
+	setContentOffset(Vec3(-nfpx, -nfpy, 0));
+}
+
 void ScrollingPane::setContentOffset(float x, float y) {
 	this->setContentOffsetWithAnimation(Vec3(x, y, 0), false);
 }

src/client/gui/components/ScrollingPane.h

@@ -51,6 +51,10 @@ public:
 	void tick();
 	void render(int xm, int ym, float alpha);
 
+	// scroll the content by the given amount (dx horizontal, dy vertical)
+	// positive values move content downward/rightward
+	void scrollBy(float dx, float dy);
+
 	bool getGridItemFor_slow(int itemIndex, GridItem& out);
 
 	void setSelected(int id, bool selected);

src/client/gui/screens/IngameBlockSelectionScreen.cpp

@@ -202,6 +202,25 @@ void IngameBlockSelectionScreen::keyPressed(int eventKey)
 #endif
 }
 
+//------------------------------------------------------------------------------
+// wheel support for creative inventory; scroll moves selection vertically
+void IngameBlockSelectionScreen::mouseWheel(int dx, int dy, int xm, int ym)
+{
+	if (dy == 0) return;
+	// just move selection up/down one row; desktop UI doesn't have a pane
+	int cols = InventoryCols;
+	int maxIndex = InventorySize - 1;
+	int idx = selectedItem;
+	if (dy > 0) {
+		// wheel up -> previous row
+		if (idx >= cols) idx -= cols;
+	} else {
+		// wheel down -> next row
+		if (idx + cols <= maxIndex) idx += cols;
+	}
+	selectedItem = idx;
+}
+
 int IngameBlockSelectionScreen::getSelectedSlot(int x, int y)
 {
 	int left = width / 2 - InventoryCols * 10;

src/client/gui/screens/IngameBlockSelectionScreen.h

@@ -23,6 +23,9 @@ protected:
 
 	virtual void buttonClicked(Button* button);
 
+	// wheel input for creative inventory scrolling
+	virtual void mouseWheel(int dx, int dy, int xm, int ym) override;
+
 	virtual void keyPressed(int eventKey);
 private:
 	void renderSlots();

src/client/gui/screens/SelectWorldScreen.cpp

@@ -356,7 +356,7 @@ void SelectWorldScreen::render( int xm, int ym, float a )
 	worldsList->setComponentSelected(bWorldView.selected);
 	// #ifdef PLATFORM_DESKTOP
 
-	// We should add scrolling with mouse wheel but currently i dont know how to implement it
+	// desktop: render the list normally (mouse wheel handled separately below)
 	if (_mouseHasBeenUp)
 		worldsList->render(xm, ym, a);
 	else {
@@ -412,6 +412,28 @@ std::string SelectWorldScreen::getUniqueLevelName( const std::string& level )
 
 bool SelectWorldScreen::isInGameScreen() { return true;  }
 
+void SelectWorldScreen::mouseWheel(int dx, int dy, int xm, int ym)
+{
+	if (!worldsList)
+		return;
+	if (dy == 0)
+		return;
+	int num = worldsList->getNumberOfItems();
+	int idx = worldsList->selectedItem;
+	if (dy > 0) {
+		if (idx > 0) {
+			idx--;
+			worldsList->stepLeft();
+		}
+	} else {
+		if (idx < num - 1) {
+			idx++;
+			worldsList->stepRight();
+		}
+	}
+	worldsList->selectedItem = idx;
+}
+
 void SelectWorldScreen::keyPressed( int eventKey )
 {
 	if (bWorldView.selected) {

src/client/gui/screens/SelectWorldScreen.h

@@ -90,6 +90,9 @@ public:
 
 	void render(int xm, int ym, float a);
 
+	// mouse wheel scroll (new in desktop implementation)
+	virtual void mouseWheel(int dx, int dy, int xm, int ym);
+
 	bool isInGameScreen();
 private:
 	void loadLevelSource();

src/client/gui/screens/SimpleChooseLevelScreen.cpp

@@ -32,6 +32,13 @@ SimpleChooseLevelScreen::~SimpleChooseLevelScreen()
 
 void SimpleChooseLevelScreen::init()
 {
+    // make sure the base class loads the existing level list; the
+    // derived screen uses ChooseLevelScreen::getUniqueLevelName(), which
+    // depends on `levels` being populated.  omitting this used to result
+    // in duplicate IDs ("creating the second world would load the
+    // first") when the name already existed.
+    ChooseLevelScreen::init();
+
     tLevelName.text = "New world";
 
     // header + close button

src/client/gui/screens/StartMenuScreen.cpp

@@ -6,6 +6,7 @@
 #include "OptionsScreen.h"
 #include "PauseScreen.h"
 #include "PrerenderTilesScreen.h" // test button
+#include "../components/ImageButton.h"
 
 #include "../../../util/Mth.h"
 
@@ -25,7 +26,8 @@
 StartMenuScreen::StartMenuScreen()
 :	bHost(    2, 0, 0, 160, 24, "Start Game"),
 	bJoin(    3, 0, 0, 160, 24, "Join Game"),
-	bOptions( 4, 0, 0,  78, 22, "Options")
+	bOptions( 4, 0, 0,  78, 22, "Options"),
+	bQuit(    5, "")
 {
 }
 
@@ -54,10 +56,18 @@ void StartMenuScreen::init()
 		tabButtons.push_back(&bOptions);
 	#endif
 
-	#ifdef DEMO_MODE
-		buttons.push_back(&bBuy);
-		tabButtons.push_back(&bBuy);
-	#endif
+    // add quit button (top right X icon) – match OptionsScreen style
+    {
+        ImageDef def;
+        def.name = "gui/touchgui.png";
+        def.width = 34;
+        def.height = 26;
+        def.setSrc(IntRectangle(150, 0, (int)def.width, (int)def.height));
+        bQuit.setImageDef(def, true);
+        bQuit.scaleWhenPressed = false;
+        buttons.push_back(&bQuit);
+        // don't include in tab navigation
+    }
 
 	copyright = "\xffMojang AB";//. Do not distribute!";
 
@@ -100,8 +110,9 @@ void StartMenuScreen::setupPositions() {
 	bJoin.x = (width - bJoin.width) / 2;
 	bOptions.x = (width - bJoin.width) / 2;
 
-	copyrightPosX = width - minecraft->font->width(copyright) - 1;
-	versionPosX = (width - minecraft->font->width(version)) / 2;// - minecraft->font->width(version) - 2;
+    // position quit icon at top-right (use image-defined size)
+    bQuit.x = width - bQuit.width;
+    bQuit.y = 0;
 }
 
 void StartMenuScreen::tick() {
@@ -130,6 +141,10 @@ void StartMenuScreen::buttonClicked(Button* button) {
 	{
 		minecraft->setScreen(new OptionsScreen());
 	}
+	if (button == &bQuit)
+	{
+		minecraft->quit();
+	}
 }
 
 bool StartMenuScreen::isInGameScreen() { return false; }

src/client/gui/screens/StartMenuScreen.h

@@ -3,6 +3,7 @@
 
 #include "../Screen.h"
 #include "../components/Button.h"
+#include "../components/ImageButton.h"
 
 class StartMenuScreen: public Screen
 {
@@ -25,6 +26,7 @@ private:
 	Button bHost;
 	Button bJoin;
 	Button bOptions;
+	ImageButton bQuit; // X button in top-right corner
 
 	std::string copyright;
 	int copyrightPosX;

src/client/gui/screens/touch/TouchIngameBlockSelectionScreen.cpp

@@ -153,6 +153,11 @@ int IngameBlockSelectionScreen::getSlotPosY(int slotY) {
 	return height - 16 - 3 - 22 * 2 - 22 * slotY;
 }
 
+int IngameBlockSelectionScreen::getSlotHeight() {
+	// same as non-touch implementation
+	return 22;
+}
+
 void IngameBlockSelectionScreen::mouseClicked(int x, int y, int buttonNum) {
 	_pendingClose = _blockList->_clickArea->isInside((float)x, (float)y);
 	if (!_pendingClose)
@@ -166,6 +171,24 @@ void IngameBlockSelectionScreen::mouseReleased(int x, int y, int buttonNum) {
 		super::mouseReleased(x, y, buttonNum);
 }
 
+void IngameBlockSelectionScreen::mouseWheel(int dx, int dy, int xm, int ym)
+{
+	if (dy == 0) return;
+	if (_blockList) {
+		float amount = -dy * getSlotHeight();
+		_blockList->scrollBy(0, amount);
+	}
+	int cols = InventoryColumns;
+	int maxIndex = InventorySize - 1;
+	int idx = selectedItem;
+	if (dy > 0) {
+		if (idx >= cols) idx -= cols;
+	} else {
+		if (idx + cols <= maxIndex) idx += cols;
+	}
+	selectedItem = idx;
+}
+
 bool IngameBlockSelectionScreen::addItem(const InventoryPane* pane, int itemId)
 {
 	Inventory* inventory = minecraft->player->inventory;

src/client/gui/screens/touch/TouchIngameBlockSelectionScreen.h

@@ -39,12 +39,16 @@ public:
 protected:
 	virtual void mouseClicked(int x, int y, int buttonNum);
 	virtual void mouseReleased(int x, int y, int buttonNum);
+
+	// also support wheel scrolling
+	virtual void mouseWheel(int dx, int dy, int xm, int ym) override;
 private:
 	void renderDemoOverlay();
 
 	//int getLinearSlotId(int x, int y);
 	int getSlotPosX(int slotX);
 	int getSlotPosY(int slotY);
+	int getSlotHeight();
 
 private:
 	int selectedItem;

src/client/gui/screens/touch/TouchSelectWorldScreen.cpp

@@ -389,6 +389,26 @@ static char ILLEGAL_FILE_CHARACTERS[] = {
 	'/', '\n', '\r', '\t', '\0', '\f', '`', '?', '*', '\\', '<', '>', '|', '\"', ':'
 };
 
+void SelectWorldScreen::mouseWheel(int dx, int dy, int xm, int ym)
+{
+	if (!worldsList) return;
+	if (dy == 0) return;
+	int num = worldsList->getNumberOfItems();
+	int idx = worldsList->selectedItem;
+	if (dy > 0) {
+		if (idx > 0) {
+			idx--;
+			worldsList->stepLeft();
+		}
+	} else {
+		if (idx < num - 1) {
+			idx++;
+			worldsList->stepRight();
+		}
+	}
+	worldsList->selectedItem = idx;
+}
+
 void SelectWorldScreen::tick()
 {
 #if 0

src/client/gui/screens/touch/TouchSelectWorldScreen.h

@@ -97,6 +97,9 @@ public:
 	virtual void buttonClicked(Button* button);
 	virtual void keyPressed(int eventKey);
 
+	// support for mouse wheel when desktop code uses touch variant
+	virtual void mouseWheel(int dx, int dy, int xm, int ym) override;
+
 	bool isInGameScreen();
 private:
 	void loadLevelSource();

src/client/gui/screens/touch/TouchStartMenuScreen.cpp

@@ -30,7 +30,8 @@ namespace Touch {
 StartMenuScreen::StartMenuScreen()
 :	bHost(    2, "Start Game"),
 	bJoin(    3, "Join Game"),
-	bOptions( 4, "Options")
+	bOptions( 4, "Options"),
+	bQuit(    5, "")
 {
 	ImageDef def;
 	bJoin.width = 75;
@@ -58,8 +59,18 @@ void StartMenuScreen::init()
 	buttons.push_back(&bHost);
 	buttons.push_back(&bJoin);
 	buttons.push_back(&bOptions);
-    
 
+	// add quit icon (same look as options header)
+	{
+		ImageDef def;
+		def.name = "gui/touchgui.png";
+		def.width = 34;
+		def.height = 26;
+		def.setSrc(IntRectangle(150, 0, (int)def.width, (int)def.height));
+		bQuit.setImageDef(def, true);
+		bQuit.scaleWhenPressed = false;
+		buttons.push_back(&bQuit);
+	}
 
 	tabButtons.push_back(&bHost);
 	tabButtons.push_back(&bJoin);
@@ -108,6 +119,10 @@ void StartMenuScreen::setupPositions() {
 	bHost.x		= 1*buttonWidth + (int)(2*spacing);
 	bOptions.x	= 2*buttonWidth + (int)(3*spacing);
     
+	// quit icon top-right (use size assigned in init)
+	bQuit.x = width - bQuit.width;
+	bQuit.y = 0;
+
 	copyrightPosX = width - minecraft->font->width(copyright) - 1;
 	versionPosX = (width - minecraft->font->width(version)) / 2;// - minecraft->font->width(version) - 2;
 }
@@ -135,6 +150,10 @@ void StartMenuScreen::buttonClicked(::Button* button) {
 	{
 		minecraft->setScreen(new OptionsScreen());
 	}
+	if (button == &bQuit)
+	{
+		minecraft->quit();
+	}
 }
 
 bool StartMenuScreen::isInGameScreen() { return false; }

src/client/gui/screens/touch/TouchStartMenuScreen.h

@@ -3,6 +3,7 @@
 
 #include "../../Screen.h"
 #include "../../components/LargeImageButton.h"
+#include "../../components/ImageButton.h"
 #include "../../components/TextBox.h"
 
 namespace Touch {
@@ -27,6 +28,7 @@ private:
 	LargeImageButton bHost;
 	LargeImageButton bJoin;
 	LargeImageButton bOptions;
+	ImageButton bQuit; // X close icon
 
 	std::string copyright;
 	int copyrightPosX;

src/main_win32.h

@@ -113,6 +113,14 @@ LRESULT WINAPI windowProc ( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
 		Multitouch::feed(0, 0, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), 0);
 		break;
 	}
+	case WM_MOUSEWHEEL: {
+		// wheel delta is multiples of WHEEL_DELTA (120); convert to +/-1
+		int delta = GET_WHEEL_DELTA_WPARAM(wParam) / WHEEL_DELTA;
+		short x = GET_X_LPARAM(lParam);
+		short y = GET_Y_LPARAM(lParam);
+		Mouse::feed(MouseAction::ACTION_WHEEL, 0, x, y, 0, delta);
+		break;
+	}
 	default:
 		if (uMsg == WM_NCDESTROY) g_running = false;
 		else {

src/world/level/tile/DoorTile.cpp

@@ -165,7 +165,8 @@ void DoorTile::neighborChanged(Level* level, int x, int y, int z, int type) {
 		}
 		if (spawn) {
 			if (!level->isClientSide) {
-				spawnResources(level, x, y, z, data, 0);
+				// use default chance (1.0) so the drop always occurs
+				spawnResources(level, x, y, z, data);
 			}
 		} else {
 			bool signal = level->hasNeighborSignal(x, y, z) || level->hasNeighborSignal(x, y + 1, z);
@@ -174,13 +175,12 @@ void DoorTile::neighborChanged(Level* level, int x, int y, int z, int type) {
 			}
 		}
 	} else {
+		// upper half: removal should not drop a second door. the
+		// lower half neighbour handler takes care of spawning the item
+		// whenever the door is broken from either end.
 		if (level->getTile(x, y - 1, z) != id) {
 			level->setTile(x, y, z, 0);
-			if(material == Material::metal) {
-				popResource(level, x, y, z, ItemInstance(Item::door_iron));
-			} else {
-				popResource(level, x, y, z, ItemInstance(Item::door_wood));
-			}
+			// no resource spawn here
 		}
 		if (type > 0 && type != id) {
 			neighborChanged(level, x, y - 1, z, type);
@@ -189,7 +189,11 @@ void DoorTile::neighborChanged(Level* level, int x, int y, int z, int type) {
 }
 
 int DoorTile::getResource(int data, Random* random) {
-	if ((data & 8) != 0) return 0;
+	// only the lower half should return a resource ID; the upper half
+	// itself never drops anything and playerDestroy suppresses spawning
+	// from the top.  This prevents duplicate drops if the bottom half is
+	// mined.
+	if ((data & UPPER_BIT) != 0) return 0;
 	if (material == Material::metal) return Item::door_iron->id;
 	return Item::door_wood->id;
 }
@@ -199,6 +203,14 @@ HitResult DoorTile::clip(Level* level, int xt, int yt, int zt, const Vec3& a, co
 	return super::clip(level, xt, yt, zt, a, b);
 }
 
+// override to prevent double-dropping when top half is directly mined
+void DoorTile::playerDestroy(Level* level, Player* player, int x, int y, int z, int data) {
+	if ((data & UPPER_BIT) == 0) {
+		// only let the lower half handle the actual spawning
+		super::playerDestroy(level, player, x, y, z, data);
+	}
+}
+
 int DoorTile::getDir(LevelSource* level, int x, int y, int z) {
 	return getCompositeData(level, x, y, z) & C_DIR_MASK;
 }

src/world/level/tile/DoorTile.h

@@ -49,6 +49,9 @@ public:
 
     int getResource(int data, Random* random);
 
+    // override to avoid duplicate drops when upper half is mined directly
+    void playerDestroy(Level* level, Player* player, int x, int y, int z, int data) override;
+
     HitResult clip(Level* level, int xt, int yt, int zt, const Vec3& a, const Vec3& b);
 
     int getDir(LevelSource* level, int x, int y, int z);