added some missing files

4 files changed, 363 insertions, 163 deletions

diff --git a/src/irrlichtwrapper.cpp b/src/irrlichtwrapper.cpp
new file mode 100644
index 000000000..69b08a6d8
--- /dev/null
+++ b/src/irrlichtwrapper.cpp
@@ -0,0 +1,136 @@
+#include "irrlichtwrapper.h"
+
+IrrlichtWrapper::IrrlichtWrapper(IrrlichtDevice *device)
+{
+	m_main_thread = get_current_thread_id();
+	m_device_mutex.Init();
+	m_device = device;
+}
+
+void IrrlichtWrapper::Run()
+{
+	/*
+		Fetch textures
+	*/
+	if(m_get_texture_queue.size() > 0)
+	{
+		GetRequest<TextureSpec, video::ITexture*, u8, u8>
+				request = m_get_texture_queue.pop();
+
+		dstream<<"got request with key.name="<<request.key.name<<std::endl;
+
+		GetResult<TextureSpec, video::ITexture*, u8, u8>
+				result;
+		result.key = request.key;
+		result.callers = request.callers;
+		result.item = getTextureDirect(request.key);
+
+		request.dest->push_back(result);
+	}
+}
+
+video::ITexture* IrrlichtWrapper::getTexture(TextureSpec spec)
+{
+	video::ITexture *t = m_texturecache.get(spec.name);
+	if(t != NULL)
+		return t;
+	
+	if(get_current_thread_id() == m_main_thread)
+	{
+		dstream<<"Loading texture directly: "<<spec.name<<std::endl;
+		t = getTextureDirect(spec);
+	}
+	else
+	{
+		// We're gonna ask the result to be put into here
+		ResultQueue<TextureSpec, video::ITexture*, u8, u8> result_queue;
+		
+		// Throw a request in
+		m_get_texture_queue.add(spec, 0, 0, &result_queue);
+		
+		dstream<<"Waiting for texture "<<spec.name<<std::endl;
+
+		// Wait result
+		GetResult<TextureSpec, video::ITexture*, u8, u8>
+				result = result_queue.pop_front(true);
+		
+		// Check that at least something worked OK
+		assert(result.key.name == spec.name);
+
+		t = result.item;
+	}
+
+	// Add to cache and return
+	m_texturecache.set(spec.name, t);
+	return t;
+}
+
+video::ITexture* IrrlichtWrapper::getTexture(const std::string &path)
+{
+	/*TextureSpec spec;
+	spec.name = path;
+	spec.path = path;
+	return getTexture(spec);*/
+	return getTexture(TextureSpec(path, path, NULL));
+}
+
+/*
+	Non-thread-safe functions
+*/
+
+video::ITexture* IrrlichtWrapper::getTextureDirect(TextureSpec spec)
+{
+	video::IVideoDriver* driver = m_device->getVideoDriver();
+	//TODO
+	if(spec.mod != NULL)
+	{
+		dstream<<"IrrlichtWrapper::getTextureDirect: Modified textures"
+				" not supported"<<std::endl;
+	}
+	return driver->getTexture(spec.path.c_str());
+}
+
+video::ITexture * CrackTextureMod::make(video::ITexture *original,
+		video::IVideoDriver* driver)
+{
+	//TODO
+	dstream<<__FUNCTION_NAME<<std::endl;
+	return NULL;
+}
+
+#if 0
+video::ITexture * createAlphaBlitTexture(const char *name, video::ITexture *base,
+		video::ITexture *other, v2u32 size, v2s32 pos_base, v2s32 pos_other)
+{
+	if(g_device == NULL)
+		return NULL;
+	video::IVideoDriver* driver = g_device->getVideoDriver();
+
+	core::dimension2d<u32> dim(size.X, size.Y);
+
+	video::IImage *baseimage = driver->createImage(
+			base,
+			core::position2d<s32>(pos_base.X, pos_base.Y),
+			dim);
+	assert(baseimage);
+
+	video::IImage *otherimage = driver->createImage(
+			other,
+			core::position2d<s32>(pos_other.X, pos_other.Y),
+			dim);
+	assert(sourceimage);
+	
+	otherimage->copyToWithAlpha(baseimage, v2s32(0,0),
+			core::rect<s32>(v2s32(0,0), dim),
+			video::SColor(255,255,255,255),
+			core::rect<s32>(v2s32(0,0), dim));
+	otherimage->drop();
+
+	video::ITexture *newtexture = driver->addTexture(name, baseimage);
+
+	baseimage->drop();
+
+	return newtexture;
+}
+#endif
+
diff --git a/src/irrlichtwrapper.h b/src/irrlichtwrapper.h
new file mode 100644
index 000000000..a78edfe78
--- /dev/null
+++ b/src/irrlichtwrapper.h
@@ -0,0 +1,182 @@
+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 IRRLICHTWRAPPER_HEADER
+#define IRRLICHTWRAPPER_HEADER
+
+#include "threads.h"
+#include "common_irrlicht.h"
+#include "debug.h"
+#include "utility.h"
+
+#include <jmutex.h>
+#include <jmutexautolock.h>
+#include <string>
+
+/*
+	A thread-safe texture pointer cache.
+	
+	This is used so that irrlicht doesn't get called from many
+	threads, because texture pointers have to be handled in
+	background threads.
+*/
+
+class TextureCache
+{
+public:
+	TextureCache()
+	{
+		m_mutex.Init();
+		assert(m_mutex.IsInitialized());
+	}
+	
+	void set(std::string name, video::ITexture *texture)
+	{
+		JMutexAutoLock lock(m_mutex);
+
+		m_textures[name] = texture;
+	}
+	
+	video::ITexture* get(std::string name)
+	{
+		JMutexAutoLock lock(m_mutex);
+
+		core::map<std::string, video::ITexture*>::Node *n;
+		n = m_textures.find(name);
+
+		if(n != NULL)
+			return n->getValue();
+
+		return NULL;
+	}
+
+private:
+	core::map<std::string, video::ITexture*> m_textures;
+	JMutex m_mutex;
+};
+
+struct TextureMod
+{
+	/*
+		Returns a new texture which can be based on the original.
+		Shall not modify or delete the original texture.
+	*/
+	virtual video::ITexture * make(video::ITexture *original,
+			video::IVideoDriver* driver) = 0;
+};
+
+struct CrackTextureMod: public TextureMod
+{
+	CrackTextureMod(u16 a_progression)
+	{
+		progression = a_progression;
+	}
+	
+	virtual video::ITexture * make(video::ITexture *original,
+			video::IVideoDriver* driver);
+	
+	u16 progression;
+};
+
+/*
+	A class for specifying a requested texture
+*/
+struct TextureSpec
+{
+	TextureSpec()
+	{
+		mod = NULL;
+	}
+	TextureSpec(const std::string &a_name, const std::string &a_path,
+			TextureMod *a_mod)
+	{
+		name = a_name;
+		path = a_path;
+		mod = a_mod;;
+	}
+	~TextureSpec()
+	{
+	}
+	bool operator==(const TextureSpec &other)
+	{
+		return name == other.name;
+	}
+	// An unique name for the texture. Usually the same as the path.
+	// Note that names and paths reside the same namespace.
+	std::string name;
+	// This is the path of the base texture
+	std::string path;
+	// Modification to do to the base texture
+	// NOTE: This is deleted by the one who processes the request
+	TextureMod *mod;
+};
+
+/*
+	A thread-safe wrapper for irrlicht, to be accessed from
+	background worker threads.
+
+	Queues tasks to be done in the main thread.
+*/
+
+class IrrlichtWrapper
+{
+public:
+	/*
+		These are called from the main thread
+	*/
+	IrrlichtWrapper(IrrlichtDevice *device);
+	
+	// Run queued tasks
+	void Run();
+
+	/*
+		These are called from other threads
+	*/
+
+	// Not exactly thread-safe but this needs to be fast
+	u32 getTime()
+	{
+		return m_device->getTimer()->getTime();
+	}
+	
+	video::ITexture* getTexture(TextureSpec spec);
+	video::ITexture* getTexture(const std::string &path);
+
+private:
+	/*
+		Non-thread-safe variants of stuff, for internal use
+	*/
+	video::ITexture* getTextureDirect(TextureSpec spec);
+	
+	/*
+		Members
+	*/
+	
+	threadid_t m_main_thread;
+
+	JMutex m_device_mutex;
+	IrrlichtDevice *m_device;
+
+	TextureCache m_texturecache;
+	
+	RequestQueue<TextureSpec, video::ITexture*, u8, u8> m_get_texture_queue;
+};
+
+#endif
+
diff --git a/src/loadstatus.h b/src/loadstatus.h
deleted file mode 100644
index 06d515ae3..000000000
--- a/src/loadstatus.h
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 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 General Public License for more details.
-
-You should have received a copy of the GNU 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 LOADSTATUS_HEADER
-#define LOADSTATUS_HEADER
-
-class LoadStatus
-{
-	bool ready;
-	JMutex ready_mutex;
-	
-	u32 done;
-	JMutex done_mutex;
-
-	u32 todo;
-	JMutex todo_mutex;
-
-	wchar_t *text;
-	JMutex text_mutex;
-
-public:
-
-	LoadStatus(bool a_ready=false, u32 a_done=0, u32 a_todo=0)
-	{
-		ready = a_ready;
-		done = a_done;
-		todo = a_todo;
-		text = NULL;
-		ready_mutex.Init();
-		done_mutex.Init();
-		todo_mutex.Init();
-		text_mutex.Init();
-	}
-
-	void setReady(bool a_ready)
-	{
-		ready_mutex.Lock();
-		ready = a_ready;
-		ready_mutex.Unlock();
-	}
-
-	bool getReady(void)
-	{
-		ready_mutex.Lock();
-		bool a_ready = ready;
-		ready_mutex.Unlock();
-		return a_ready;
-	}
-
-	void setDone(u32 a_done)
-	{
-		done_mutex.Lock();
-		done = a_done;
-		done_mutex.Unlock();
-	}
-
-	u32 getDone(void)
-	{
-		done_mutex.Lock();
-		u32 a_done = done;
-		done_mutex.Unlock();
-		return a_done;
-	}
-
-	void setTodo(u32 a_todo)
-	{
-		todo_mutex.Lock();
-		todo = a_todo;
-		todo_mutex.Unlock();
-	}
-
-	u32 getTodo(void)
-	{
-		todo_mutex.Lock();
-		u32 a_todo = todo;
-		todo_mutex.Unlock();
-		return a_todo;
-	}
-
-	/*
-		Copies the text if not NULL,
-		If NULL; sets text to NULL.
-	*/
-	void setText(const wchar_t *a_text)
-	{
-		text_mutex.Lock();
-		if(text != NULL)
-			free(text);
-		if(a_text == NULL){
-			text = NULL;
-			text_mutex.Unlock();
-			return;
-		}
-		u32 len = wcslen(a_text);
-		text = (wchar_t*)malloc(sizeof(wchar_t) * (len+1));
-		if(text == NULL) throw;
-		swprintf(text, len+1, L"%ls", a_text);
-		text_mutex.Unlock();
-	}
-	
-	/*
-		Return value must be free'd
-		Return value can be NULL
-	*/
-	wchar_t * getText()
-	{
-		text_mutex.Lock();
-		if(text == NULL){
-			text_mutex.Unlock();
-			return NULL;
-		}
-		u32 len = wcslen(text);
-		wchar_t *b_text = (wchar_t*)malloc(sizeof(wchar_t) * (len+1));
-		if(b_text == NULL) throw;
-		swprintf(b_text, len+1, L"%ls", text);
-		text_mutex.Unlock();
-		return b_text;
-	}
-	
-	/*
-		Return value must be free'd
-	*/
-	wchar_t * getNiceText()
-	{
-		const wchar_t *defaulttext = L"Loading";
-		wchar_t *t = getText();
-		u32 maxlen = 20; // " (%i/%i)"
-		if(t != NULL)
-			maxlen += wcslen(t);
-		else
-			maxlen += wcslen(defaulttext);
-		wchar_t *b_text = (wchar_t*)malloc(sizeof(wchar_t) * (maxlen+1));
-		if(b_text == NULL) throw;
-		if(t != NULL)
-			swprintf(b_text, maxlen+1, L"%ls (%i/%i)",
-					t, getDone(), getTodo());
-		else
-			swprintf(b_text, maxlen+1, L"%ls (%i/%i)",
-					defaulttext, getDone(), getTodo());
-		if(t != NULL)
-			free(t);
-		return b_text;
-	}
-};
-
-#endif
-
diff --git a/src/threads.h b/src/threads.h
new file mode 100644
index 000000000..1ea7d0a94
--- /dev/null
+++ b/src/threads.h
@@ -0,0 +1,45 @@
+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 THREADS_HEADER
+#define THREADS_HEADER
+
+#include <jmutex.h>
+
+#if (defined(WIN32) || defined(_WIN32_WCE))
+typedef DWORD threadid_t;
+#define __NORETURN __declspec(noreturn)
+#define __FUNCTION_NAME __FUNCTION__
+#else
+typedef pthread_t threadid_t;
+#define __NORETURN __attribute__ ((__noreturn__))
+#define __FUNCTION_NAME __PRETTY_FUNCTION__
+#endif
+
+inline threadid_t get_current_thread_id()
+{
+#if (defined(WIN32) || defined(_WIN32_WCE))
+	return GetCurrentThreadId();
+#else
+	return pthread_self();
+#endif
+}
+
+#endif
+