7 files changed, 612 insertions, 28 deletions

diff --git a/src/client/CMakeLists.txt b/src/client/CMakeLists.txt
index a1ec37fe3..5faa186a7 100644
--- a/src/client/CMakeLists.txt
+++ b/src/client/CMakeLists.txt
@@ -1,6 +1,7 @@
 set(client_SRCS
 	${CMAKE_CURRENT_SOURCE_DIR}/clientlauncher.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/tile.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/joystick_controller.cpp
 	PARENT_SCOPE
 )
 
diff --git a/src/client/clientlauncher.cpp b/src/client/clientlauncher.cpp
index 404a16310..6145e3dde 100644
--- a/src/client/clientlauncher.cpp
+++ b/src/client/clientlauncher.cpp
@@ -32,7 +32,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "guiEngine.h"
 #include "player.h"
 #include "fontengine.h"
+#include "joystick_controller.h"
 #include "clientlauncher.h"
+#include "version.h"
 
 /* mainmenumanager.h
  */
@@ -112,6 +114,8 @@ bool ClientLauncher::run(GameParams &game_params, const Settings &cmd_args)
 
 	porting::setXorgClassHint(video_driver->getExposedVideoData(), PROJECT_NAME_C);
 
+	porting::setXorgWindowIcon(device);
+
 	/*
 		This changes the minimum allowed number of vertices in a VBO.
 		Default is 500.
@@ -184,7 +188,9 @@ bool ClientLauncher::run(GameParams &game_params, const Settings &cmd_args)
 	{
 		// Set the window caption
 		const wchar_t *text = wgettext("Main Menu");
-		device->setWindowCaption((utf8_to_wide(PROJECT_NAME_C) + L" [" + text + L"]").c_str());
+		device->setWindowCaption((utf8_to_wide(PROJECT_NAME_C) +
+			L" " + utf8_to_wide(g_version_hash) +
+			L" [" + text + L"]").c_str());
 		delete[] text;
 
 		try {	// This is used for catching disconnects
@@ -499,7 +505,8 @@ void ClientLauncher::main_menu(MainMenuData *menudata)
 #endif
 
 	/* show main menu */
-	GUIEngine mymenu(device, guiroot, &g_menumgr, smgr, menudata, *kill);
+	GUIEngine mymenu(device, &input->joystick, guiroot,
+		&g_menumgr, smgr, menudata, *kill);
 
 	smgr->clear();	/* leave scene manager in a clean state */
 }
@@ -558,6 +565,22 @@ bool ClientLauncher::create_engine_device()
 	device = createDeviceEx(params);
 
 	if (device) {
+		if (g_settings->getBool("enable_joysticks")) {
+			irr::core::array<irr::SJoystickInfo> infos;
+			std::vector<irr::SJoystickInfo> joystick_infos;
+			// Make sure this is called maximum once per
+			// irrlicht device, otherwise it will give you
+			// multiple events for the same joystick.
+			if (device->activateJoysticks(infos)) {
+				infostream << "Joystick support enabled" << std::endl;
+				joystick_infos.reserve(infos.size());
+				for (u32 i = 0; i < infos.size(); i++) {
+					joystick_infos.push_back(infos[i]);
+				}
+			} else {
+				errorstream << "Could not activate joystick support." << std::endl;
+			}
+		}
 		porting::initIrrlicht(device);
 	}
 
diff --git a/src/client/inputhandler.h b/src/client/inputhandler.h
index 69e4b25fa..824b0da2e 100644
--- a/src/client/inputhandler.h
+++ b/src/client/inputhandler.h
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define INPUT_HANDLER_H
 
 #include "irrlichttypes_extrabloated.h"
+#include "joystick_controller.h"
 
 class MyEventReceiver : public IEventReceiver
 {
@@ -42,11 +43,15 @@ public:
 
 		// Remember whether each key is down or up
 		if (event.EventType == irr::EET_KEY_INPUT_EVENT) {
-			if (event.KeyInput.PressedDown) {
-				keyIsDown.set(event.KeyInput);
-				keyWasDown.set(event.KeyInput);
-			} else {
-				keyIsDown.unset(event.KeyInput);
+			const KeyPress &keyCode = event.KeyInput;
+			if (keysListenedFor[keyCode]) {
+				if (event.KeyInput.PressedDown) {
+					keyIsDown.set(keyCode);
+					keyWasDown.set(keyCode);
+				} else {
+					keyIsDown.unset(keyCode);
+				}
+				return true;
 			}
 		}
 
@@ -58,6 +63,14 @@ public:
 			return true;
 		}
 #endif
+
+		if (event.EventType == irr::EET_JOYSTICK_INPUT_EVENT) {
+			/* TODO add a check like:
+			if (event.JoystickEvent != joystick_we_listen_for)
+				return false;
+			*/
+			return joystick->handleEvent(event.JoystickEvent);
+		}
 		// handle mouse events
 		if (event.EventType == irr::EET_MOUSE_INPUT_EVENT) {
 			if (noMenuActive() == false) {
@@ -116,6 +129,15 @@ public:
 		return b;
 	}
 
+	void listenForKey(const KeyPress &keyCode)
+	{
+		keysListenedFor.set(keyCode);
+	}
+	void dontListenForKeys()
+	{
+		keysListenedFor.clear();
+	}
+
 	s32 getMouseWheel()
 	{
 		s32 a = mouse_wheel;
@@ -159,6 +181,8 @@ public:
 
 	s32 mouse_wheel;
 
+	JoystickController *joystick;
+
 #ifdef HAVE_TOUCHSCREENGUI
 	TouchScreenGUI* m_touchscreengui;
 #endif
@@ -168,6 +192,12 @@ private:
 	KeyList keyIsDown;
 	// Whether a key has been pressed or not
 	KeyList keyWasDown;
+	// List of keys we listen for
+	// TODO perhaps the type of this is not really
+	// performant as KeyList is designed for few but
+	// often changing keys, and keysListenedFor is expected
+	// to change seldomly but contain lots of keys.
+	KeyList keysListenedFor;
 };
 
 
@@ -183,6 +213,7 @@ public:
 		m_receiver(receiver),
 		m_mousepos(0,0)
 	{
+		m_receiver->joystick = &joystick;
 	}
 	virtual bool isKeyDown(const KeyPress &keyCode)
 	{
@@ -192,6 +223,14 @@ public:
 	{
 		return m_receiver->WasKeyDown(keyCode);
 	}
+	virtual void listenForKey(const KeyPress &keyCode)
+	{
+		m_receiver->listenForKey(keyCode);
+	}
+	virtual void dontListenForKeys()
+	{
+		m_receiver->dontListenForKeys();
+	}
 	virtual v2s32 getMousePos()
 	{
 		if (m_device->getCursorControl()) {
@@ -261,6 +300,7 @@ public:
 
 	void clear()
 	{
+		joystick.clear();
 		m_receiver->clearInput();
 	}
 private:
diff --git a/src/client/joystick_controller.cpp b/src/client/joystick_controller.cpp
new file mode 100644
index 000000000..ef8d18ab0
--- /dev/null
+++ b/src/client/joystick_controller.cpp
@@ -0,0 +1,179 @@
+/*
+Minetest
+Copyright (C) 2016 est31, <MTest31@outlook.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "joystick_controller.h"
+#include "irrlichttypes_extrabloated.h"
+#include "keys.h"
+#include "settings.h"
+#include "gettime.h"
+
+bool JoystickButtonCmb::isTriggered(const irr::SEvent::SJoystickEvent &ev) const
+{
+	u32 buttons = ev.ButtonStates;
+
+	buttons &= filter_mask;
+	return buttons == compare_mask;
+}
+
+bool JoystickAxisCmb::isTriggered(const irr::SEvent::SJoystickEvent &ev) const
+{
+	s16 ax_val = ev.Axis[axis_to_compare];
+
+	return (ax_val * direction < 0) && (thresh * direction > ax_val * direction);
+}
+
+// spares many characters
+#define JLO_B_PB(A, B, C)    jlo.button_keys.push_back(JoystickButtonCmb(A, B, C))
+#define JLO_A_PB(A, B, C, D) jlo.axis_keys.push_back(JoystickAxisCmb(A, B, C, D))
+
+static JoystickLayout create_default_layout()
+{
+	JoystickLayout jlo;
+
+	jlo.axes_dead_border = 1024;
+
+	const JoystickAxisLayout axes[JA_COUNT] = {
+		{0, 1}, // JA_SIDEWARD_MOVE
+		{1, 1}, // JA_FORWARD_MOVE
+		{3, 1}, // JA_FRUSTUM_HORIZONTAL
+		{4, 1}, // JA_FRUSTUM_VERTICAL
+	};
+	memcpy(jlo.axes, axes, sizeof(jlo.axes));
+
+	u32 sb = 1 << 7; // START button mask
+	u32 fb = 1 << 3; // FOUR button mask
+	u32 bm = sb | fb; // Mask for Both Modifiers
+
+	// The back button means "ESC".
+	JLO_B_PB(KeyType::ESC,        1 << 6,      1 << 6);
+
+	// The start button counts as modifier as well as use key.
+	// JLO_B_PB(KeyType::USE,        sb,          sb));
+
+	// Accessible without start modifier button pressed
+	// regardless whether four is pressed or not
+	JLO_B_PB(KeyType::SNEAK,      sb | 1 << 2, 1 << 2);
+
+	// Accessible without four modifier button pressed
+	// regardless whether start is pressed or not
+	JLO_B_PB(KeyType::MOUSE_L,    fb | 1 << 4, 1 << 4);
+	JLO_B_PB(KeyType::MOUSE_R,    fb | 1 << 5, 1 << 5);
+
+	// Accessible without any modifier pressed
+	JLO_B_PB(KeyType::JUMP,       bm | 1 << 0, 1 << 0);
+	JLO_B_PB(KeyType::SPECIAL1,   bm | 1 << 1, 1 << 1);
+
+	// Accessible with start button not pressed, but four pressed
+	// TODO find usage for button 0
+	JLO_B_PB(KeyType::DROP,       bm | 1 << 1, fb | 1 << 1);
+	JLO_B_PB(KeyType::SCROLL_UP,  bm | 1 << 4, fb | 1 << 4);
+	JLO_B_PB(KeyType::SCROLL_DOWN,bm | 1 << 5, fb | 1 << 5);
+
+	// Accessible with start button and four pressed
+	// TODO find usage for buttons 0, 1 and 4, 5
+
+	// Now about the buttons simulated by the axes
+
+	// Movement buttons, important for vessels
+	JLO_A_PB(KeyType::FORWARD,  1,  1, 1024);
+	JLO_A_PB(KeyType::BACKWARD, 1, -1, 1024);
+	JLO_A_PB(KeyType::LEFT,     0,  1, 1024);
+	JLO_A_PB(KeyType::RIGHT,    0, -1, 1024);
+
+	// Scroll buttons
+	JLO_A_PB(KeyType::SCROLL_UP,   2, -1, 1024);
+	JLO_A_PB(KeyType::SCROLL_DOWN, 5, -1, 1024);
+
+	return jlo;
+}
+
+static const JoystickLayout default_layout = create_default_layout();
+
+JoystickController::JoystickController()
+{
+	m_layout = &default_layout;
+	doubling_dtime = g_settings->getFloat("repeat_joystick_button_time");
+
+	for (size_t i = 0; i < KeyType::INTERNAL_ENUM_COUNT; i++) {
+		m_past_pressed_time[i] = 0;
+	}
+	clear();
+}
+
+bool JoystickController::handleEvent(const irr::SEvent::SJoystickEvent &ev)
+{
+	m_internal_time = getTimeMs() / 1000.f;
+
+	std::bitset<KeyType::INTERNAL_ENUM_COUNT> keys_pressed;
+
+	// First generate a list of keys pressed
+
+	for (size_t i = 0; i < m_layout->button_keys.size(); i++) {
+		if (m_layout->button_keys[i].isTriggered(ev)) {
+			keys_pressed.set(m_layout->button_keys[i].key);
+		}
+	}
+
+	for (size_t i = 0; i < m_layout->axis_keys.size(); i++) {
+		if (m_layout->axis_keys[i].isTriggered(ev)) {
+			keys_pressed.set(m_layout->axis_keys[i].key);
+		}
+	}
+
+	// Then update the values
+
+	for (size_t i = 0; i < KeyType::INTERNAL_ENUM_COUNT; i++) {
+		if (keys_pressed[i]) {
+			if (!m_past_pressed_keys[i] &&
+					m_past_pressed_time[i] < m_internal_time - doubling_dtime) {
+				m_past_pressed_keys[i] = true;
+				m_past_pressed_time[i] = m_internal_time;
+			}
+		} else if (m_pressed_keys[i]) {
+			m_past_released_keys[i] = true;
+		}
+
+		m_pressed_keys[i] = keys_pressed[i];
+	}
+
+	for (size_t i = 0; i < JA_COUNT; i++) {
+		const JoystickAxisLayout &ax_la = m_layout->axes[i];
+		m_axes_vals[i] = ax_la.invert * ev.Axis[ax_la.axis_id];
+	}
+
+
+	return true;
+}
+
+void JoystickController::clear()
+{
+	m_pressed_keys.reset();
+	m_past_pressed_keys.reset();
+	m_past_released_keys.reset();
+	memset(m_axes_vals, 0, sizeof(m_axes_vals));
+}
+
+s16 JoystickController::getAxisWithoutDead(JoystickAxis axis)
+{
+	s16 v = m_axes_vals[axis];
+	if (((v > 0) && (v < m_layout->axes_dead_border)) ||
+			((v < 0) && (v > -m_layout->axes_dead_border)))
+		return 0;
+	return v;
+}
diff --git a/src/client/joystick_controller.h b/src/client/joystick_controller.h
new file mode 100644
index 000000000..ed0ee4068
--- /dev/null
+++ b/src/client/joystick_controller.h
@@ -0,0 +1,163 @@
+/*
+Minetest
+Copyright (C) 2016 est31, <MTest31@outlook.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef JOYSTICK_HEADER
+#define JOYSTICK_HEADER
+
+#include "irrlichttypes_extrabloated.h"
+#include "keys.h"
+#include <bitset>
+#include <vector>
+
+enum JoystickAxis {
+	JA_SIDEWARD_MOVE,
+	JA_FORWARD_MOVE,
+
+	JA_FRUSTUM_HORIZONTAL,
+	JA_FRUSTUM_VERTICAL,
+
+	// To know the count of enum values
+	JA_COUNT,
+};
+
+struct JoystickAxisLayout {
+	u16 axis_id;
+	// -1 if to invert, 1 if to keep it.
+	int invert;
+};
+
+
+struct JoystickCombination {
+
+	virtual bool isTriggered(const irr::SEvent::SJoystickEvent &ev) const=0;
+
+	GameKeyType key;
+};
+
+struct JoystickButtonCmb : public JoystickCombination {
+
+	JoystickButtonCmb() {}
+	JoystickButtonCmb(GameKeyType key, u32 filter_mask, u32 compare_mask) :
+		filter_mask(filter_mask),
+		compare_mask(compare_mask)
+	{
+		this->key = key;
+	}
+
+	virtual bool isTriggered(const irr::SEvent::SJoystickEvent &ev) const;
+
+	u32 filter_mask;
+	u32 compare_mask;
+};
+
+struct JoystickAxisCmb : public JoystickCombination {
+
+	JoystickAxisCmb() {}
+	JoystickAxisCmb(GameKeyType key, u16 axis_to_compare, int direction, s16 thresh) :
+		axis_to_compare(axis_to_compare),
+		direction(direction),
+		thresh(thresh)
+	{
+		this->key = key;
+	}
+
+	virtual bool isTriggered(const irr::SEvent::SJoystickEvent &ev) const;
+
+	u16 axis_to_compare;
+
+	// if -1, thresh must be smaller than the axis value in order to trigger
+	// if  1, thresh must be bigger  than the axis value in order to trigger
+	int direction;
+	s16 thresh;
+};
+
+struct JoystickLayout {
+	std::vector<JoystickButtonCmb> button_keys;
+	std::vector<JoystickAxisCmb> axis_keys;
+	JoystickAxisLayout axes[JA_COUNT];
+	s16 axes_dead_border;
+};
+
+class JoystickController {
+
+public:
+	JoystickController();
+	bool handleEvent(const irr::SEvent::SJoystickEvent &ev);
+	void clear();
+
+	bool wasKeyDown(GameKeyType b)
+	{
+		bool r = m_past_pressed_keys[b];
+		m_past_pressed_keys[b] = false;
+		return r;
+	}
+	bool getWasKeyDown(GameKeyType b)
+	{
+		return m_past_pressed_keys[b];
+	}
+	void clearWasKeyDown(GameKeyType b)
+	{
+		m_past_pressed_keys[b] = false;
+	}
+
+	bool wasKeyReleased(GameKeyType b)
+	{
+		bool r = m_past_released_keys[b];
+		m_past_released_keys[b] = false;
+		return r;
+	}
+	bool getWasKeyReleased(GameKeyType b)
+	{
+		return m_past_pressed_keys[b];
+	}
+	void clearWasKeyReleased(GameKeyType b)
+	{
+		m_past_pressed_keys[b] = false;
+	}
+
+	bool isKeyDown(GameKeyType b)
+	{
+		return m_pressed_keys[b];
+	}
+
+	s16 getAxis(JoystickAxis axis)
+	{
+		return m_axes_vals[axis];
+	}
+
+	s16 getAxisWithoutDead(JoystickAxis axis);
+
+	f32 doubling_dtime;
+
+private:
+	const JoystickLayout *m_layout;
+
+	s16 m_axes_vals[JA_COUNT];
+
+	std::bitset<KeyType::INTERNAL_ENUM_COUNT> m_pressed_keys;
+
+	f32 m_internal_time;
+
+	f32 m_past_pressed_time[KeyType::INTERNAL_ENUM_COUNT];
+
+	std::bitset<KeyType::INTERNAL_ENUM_COUNT> m_past_pressed_keys;
+	std::bitset<KeyType::INTERNAL_ENUM_COUNT> m_past_released_keys;
+};
+
+#endif
diff --git a/src/client/keys.h b/src/client/keys.h
new file mode 100644
index 000000000..6467c443e
--- /dev/null
+++ b/src/client/keys.h
@@ -0,0 +1,86 @@
+/*
+Minetest
+Copyright (C) 2016 est31, <MTest31@outlook.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef KEYS_HEADER
+#define KEYS_HEADER
+
+#include<list>
+
+class KeyType {
+public:
+	enum T {
+		// Player movement
+		FORWARD,
+		BACKWARD,
+		LEFT,
+		RIGHT,
+		JUMP,
+		SPECIAL1,
+		SNEAK,
+		AUTORUN,
+
+		ESC,
+
+		// Other
+		DROP,
+		INVENTORY,
+		CHAT,
+		CMD,
+		CONSOLE,
+		MINIMAP,
+		FREEMOVE,
+		FASTMOVE,
+		NOCLIP,
+		CINEMATIC,
+		SCREENSHOT,
+		TOGGLE_HUD,
+		TOGGLE_CHAT,
+		TOGGLE_FORCE_FOG_OFF,
+		TOGGLE_UPDATE_CAMERA,
+		TOGGLE_DEBUG,
+		TOGGLE_PROFILER,
+		CAMERA_MODE,
+		INCREASE_VIEWING_RANGE,
+		DECREASE_VIEWING_RANGE,
+		RANGESELECT,
+		ZOOM,
+
+		QUICKTUNE_NEXT,
+		QUICKTUNE_PREV,
+		QUICKTUNE_INC,
+		QUICKTUNE_DEC,
+
+		DEBUG_STACKS,
+
+		// joystick specific keys
+		MOUSE_L,
+		MOUSE_R,
+		SCROLL_UP,
+		SCROLL_DOWN,
+
+		// Fake keycode for array size and internal checks
+		INTERNAL_ENUM_COUNT
+
+	};
+};
+
+typedef KeyType::T GameKeyType;
+
+
+#endif
diff --git a/src/client/tile.cpp b/src/client/tile.cpp
index ec8c95f02..8f0c39465 100644
--- a/src/client/tile.cpp
+++ b/src/client/tile.cpp
@@ -948,11 +948,10 @@ video::ITexture* TextureSource::generateTextureFromMesh(
 
 video::IImage* TextureSource::generateImage(const std::string &name)
 {
-	/*
-		Get the base image
-	*/
+	// Get the base image
 
 	const char separator = '^';
+	const char escape = '\\';
 	const char paren_open = '(';
 	const char paren_close = ')';
 
@@ -960,7 +959,9 @@ video::IImage* TextureSource::generateImage(const std::string &name)
 	s32 last_separator_pos = -1;
 	u8 paren_bal = 0;
 	for (s32 i = name.size() - 1; i >= 0; i--) {
-		switch(name[i]) {
+		if (i > 0 && name[i-1] == escape)
+			continue;
+		switch (name[i]) {
 		case separator:
 			if (paren_bal == 0) {
 				last_separator_pos = i;
@@ -1028,10 +1029,12 @@ video::IImage* TextureSource::generateImage(const std::string &name)
 			return NULL;
 		}
 		core::dimension2d<u32> dim = tmp->getDimension();
-		if (!baseimg)
-			baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
-		blit_with_alpha(tmp, baseimg, v2s32(0, 0), v2s32(0, 0), dim);
-		tmp->drop();
+		if (baseimg) {
+			blit_with_alpha(tmp, baseimg, v2s32(0, 0), v2s32(0, 0), dim);
+			tmp->drop();
+		} else {
+			baseimg = tmp;
+		}
 	} else if (!generateImagePart(last_part_of_name, baseimg)) {
 		// Generate image according to part of name
 		errorstream << "generateImage(): "
@@ -1099,9 +1102,27 @@ video::IImage * Align2Npot2(video::IImage * image,
 
 #endif
 
+static std::string unescape_string(const std::string &str, const char esc = '\\')
+{
+	std::string out;
+	size_t pos = 0, cpos;
+	out.reserve(str.size());
+	while (1) {
+		cpos = str.find_first_of(esc, pos);
+		if (cpos == std::string::npos) {
+			out += str.substr(pos);
+			break;
+		}
+		out += str.substr(pos, cpos - pos) + str[cpos + 1];
+		pos = cpos + 2;
+	}
+	return out;
+}
+
 bool TextureSource::generateImagePart(std::string part_of_name,
 		video::IImage *& baseimg)
 {
+	const char escape = '\\'; // same as in generateImage()
 	video::IVideoDriver* driver = m_device->getVideoDriver();
 	sanity_check(driver);
 
@@ -1251,7 +1272,7 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 		}
 		/*
 			[combine:WxH:X,Y=filename:X,Y=filename2
-			Creates a bigger texture from an amount of smaller ones
+			Creates a bigger texture from any amount of smaller ones
 		*/
 		else if (str_starts_with(part_of_name, "[combine"))
 		{
@@ -1259,7 +1280,6 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			sf.next(":");
 			u32 w0 = stoi(sf.next("x"));
 			u32 h0 = stoi(sf.next(":"));
-			//infostream<<"combined w="<<w0<<" h="<<h0<<std::endl;
 			core::dimension2d<u32> dim(w0,h0);
 			if (baseimg == NULL) {
 				baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
@@ -1268,11 +1288,11 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			while (sf.at_end() == false) {
 				u32 x = stoi(sf.next(","));
 				u32 y = stoi(sf.next("="));
-				std::string filename = sf.next(":");
+				std::string filename = unescape_string(sf.next_esc(":", escape), escape);
 				infostream<<"Adding \""<<filename
 						<<"\" to combined ("<<x<<","<<y<<")"
 						<<std::endl;
-				video::IImage *img = m_sourcecache.getOrLoad(filename, m_device);
+				video::IImage *img = generateImage(filename);
 				if (img) {
 					core::dimension2d<u32> dim = img->getDimension();
 					infostream<<"Size "<<dim.Width
@@ -1295,7 +1315,7 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			}
 		}
 		/*
-			"[brighten"
+			[brighten
 		*/
 		else if (str_starts_with(part_of_name, "[brighten"))
 		{
@@ -1309,7 +1329,7 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			brighten(baseimg);
 		}
 		/*
-			"[noalpha"
+			[noalpha
 			Make image completely opaque.
 			Used for the leaves texture when in old leaves mode, so
 			that the transparent parts don't look completely black
@@ -1336,7 +1356,7 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			}
 		}
 		/*
-			"[makealpha:R,G,B"
+			[makealpha:R,G,B
 			Convert one color to transparent.
 		*/
 		else if (str_starts_with(part_of_name, "[makealpha:"))
@@ -1375,7 +1395,7 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			}
 		}
 		/*
-			"[transformN"
+			[transformN
 			Rotates and/or flips the image.
 
 			N can be a number (between 0 and 7) or a transform name.
@@ -1543,12 +1563,11 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			Strfnd sf(part_of_name);
 			sf.next(":");
 			u32 percent = stoi(sf.next(":"));
-			std::string filename = sf.next(":");
-			//infostream<<"power part "<<percent<<"%% of "<<filename<<std::endl;
+			std::string filename = unescape_string(sf.next_esc(":", escape), escape);
 
 			if (baseimg == NULL)
 				baseimg = driver->createImage(video::ECF_A8R8G8B8, v2u32(16,16));
-			video::IImage *img = m_sourcecache.getOrLoad(filename, m_device);
+			video::IImage *img = generateImage(filename);
 			if (img)
 			{
 				core::dimension2d<u32> dim = img->getDimension();
@@ -1628,9 +1647,9 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			}
 			Strfnd sf(part_of_name);
 			sf.next(":");
-			std::string filename = sf.next(":");
+			std::string filename = unescape_string(sf.next_esc(":", escape), escape);
 
-			video::IImage *img = m_sourcecache.getOrLoad(filename, m_device);
+			video::IImage *img = generateImage(filename);
 			if (img) {
 				apply_mask(img, baseimg, v2s32(0, 0), v2s32(0, 0),
 						img->getDimension());
@@ -1673,6 +1692,10 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 
 			apply_colorize(baseimg, v2u32(0, 0), baseimg->getDimension(), color, ratio, keep_alpha);
 		}
+		/*
+			[applyfiltersformesh
+			Internal modifier
+		*/
 		else if (str_starts_with(part_of_name, "[applyfiltersformesh"))
 		{
 			// Apply the "clean transparent" filter, if configured.
@@ -1735,6 +1758,75 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			baseimg->drop();
 			baseimg = image;
 		}
+		/*
+			[opacity:R
+			Makes the base image transparent according to the given ratio.
+			R must be between 0 and 255.
+			0 means totally transparent.
+			255 means totally opaque.
+		*/
+		else if (str_starts_with(part_of_name, "[opacity:")) {
+			if (baseimg == NULL) {
+				errorstream << "generateImagePart(): baseimg == NULL "
+						<< "for part_of_name=\"" << part_of_name
+						<< "\", cancelling." << std::endl;
+				return false;
+			}
+
+			Strfnd sf(part_of_name);
+			sf.next(":");
+
+			u32 ratio = mystoi(sf.next(""), 0, 255);
+
+			core::dimension2d<u32> dim = baseimg->getDimension();
+
+			for (u32 y = 0; y < dim.Height; y++)
+			for (u32 x = 0; x < dim.Width; x++)
+			{
+				video::SColor c = baseimg->getPixel(x, y);
+				c.setAlpha(floor((c.getAlpha() * ratio) / 255 + 0.5));
+				baseimg->setPixel(x, y, c);
+			}
+		}
+		/*
+			[invert:mode
+			Inverts the given channels of the base image.
+			Mode may contain the characters "r", "g", "b", "a".
+			Only the channels that are mentioned in the mode string
+			will be inverted.
+		*/
+		else if (str_starts_with(part_of_name, "[invert:")) {
+			if (baseimg == NULL) {
+				errorstream << "generateImagePart(): baseimg == NULL "
+						<< "for part_of_name=\"" << part_of_name
+						<< "\", cancelling." << std::endl;
+				return false;
+			}
+
+			Strfnd sf(part_of_name);
+			sf.next(":");
+
+			std::string mode = sf.next("");
+			u32 mask = 0;
+			if (mode.find("a") != std::string::npos)
+				mask |= 0xff000000UL;
+			if (mode.find("r") != std::string::npos)
+				mask |= 0x00ff0000UL;
+			if (mode.find("g") != std::string::npos)
+				mask |= 0x0000ff00UL;
+			if (mode.find("b") != std::string::npos)
+				mask |= 0x000000ffUL;
+
+			core::dimension2d<u32> dim = baseimg->getDimension();
+
+			for (u32 y = 0; y < dim.Height; y++)
+			for (u32 x = 0; x < dim.Width; x++)
+			{
+				video::SColor c = baseimg->getPixel(x, y);
+				c.color ^= mask;	
+				baseimg->setPixel(x, y, c);
+			}
+		}
 		else
 		{
 			errorstream << "generateImagePart(): Invalid "