Merged default into minor

--HG--
branch : minor

src/modules/audio/openal/Audio.cpp

@@ -37,6 +37,7 @@ Audio::PoolThread::PoolThread(Pool *pool)
 	, finish(false)
 {
 	mutex = thread::newMutex();
+	threadName = "AudioPool";
 }
 
 Audio::PoolThread::~PoolThread()

src/modules/audio/openal/Source.cpp

@@ -259,10 +259,7 @@ bool Source::update()
 
 			alGetSourcef(source, AL_SAMPLE_OFFSET, &curOffsetSamples);
 
-			ALint b;
-			alGetSourcei(source, AL_BUFFER, &b);
-			int freq;
-			alGetBufferi(b, AL_FREQUENCY, &freq);
+			int freq = decoder->getSampleRate();
 			curOffsetSecs = curOffsetSamples / freq;
 
 			// Get a free buffer.
@@ -338,11 +335,7 @@ void Source::seekAtomic(float offset, void *unit)
 			if (type == TYPE_STREAM)
 			{
 				offsetSamples = offset;
-				ALint buffer;
-				alGetSourcei(source, AL_BUFFER, &buffer);
-				int freq;
-				alGetBufferi(buffer, AL_FREQUENCY, &freq);
-				offset /= freq;
+				offset /= decoder->getSampleRate();
 				offsetSeconds = offset;
 				decoder->seek(offset);
 			}
@@ -357,11 +350,7 @@ void Source::seekAtomic(float offset, void *unit)
 			{
 				offsetSeconds = offset;
 				decoder->seek(offset);
-				ALint buffer;
-				alGetSourcei(source, AL_BUFFER, &buffer);
-				int freq;
-				alGetBufferi(buffer, AL_FREQUENCY, &freq);
-				offsetSamples = offset*freq;
+				offsetSamples = offset * decoder->getSampleRate();
 			}
 			else
 			{
@@ -403,11 +392,7 @@ float Source::tellAtomic(void *unit) const
 		default:
 			{
 				alGetSourcef(source, AL_SAMPLE_OFFSET, &offset);
-				ALint buffer;
-				alGetSourcei(source, AL_BUFFER, &buffer);
-				int freq;
-				alGetBufferi(buffer, AL_FREQUENCY, &freq);
-				offset /= freq;
+				offset /= decoder->getSampleRate();
 				if (type == TYPE_STREAM) offset += offsetSeconds;
 			}
 			break;

src/modules/event/sdl/Event.cpp

@@ -270,10 +270,7 @@ Message *Event::convertJoystickEvent(const SDL_Event &e) const
 
 			arg1 = new Variant(JOYSTICK_JOYSTICK_ID, (void *) &proxy);
 			arg2 = new Variant((double)(e.jaxis.axis+1));
-			float value = e.jaxis.value / 32768.0f;
-			if (fabsf(value) < 0.001f) value = 0.0f;
-			if (value < -0.99f) value = -1.0f;
-			if (value > 0.99f) value = 1.0f;
+			float value = joystick::Joystick::clampval(e.jaxis.value / 32768.0f);
 			arg3 = new Variant((double) value);
 			msg = new Message("joystickaxis", arg1, arg2, arg3);
 			arg1->release();
@@ -332,10 +329,7 @@ Message *Event::convertJoystickEvent(const SDL_Event &e) const
 			arg1 = new Variant(JOYSTICK_JOYSTICK_ID, (void *) &proxy);
 
 			arg2 = new Variant(txt, strlen(txt));
-			float value = e.jaxis.value / 32768.0f;
-			if (fabsf(value) < 0.001f) value = 0.0f;
-			if (value < -0.99f) value = -1.0f;
-			if (value > 0.99f) value = 1.0f;
+			float value = joystick::Joystick::clampval(e.caxis.value / 32768.0f);
 			arg3 = new Variant((double) value);
 			msg = new Message("gamepadaxis", arg1, arg2, arg3);
 			arg1->release();

src/modules/event/sdl/Event.h

@@ -80,7 +80,7 @@ private:
 	static EnumMap<love::mouse::Mouse::Button, Uint8, love::mouse::Mouse::BUTTON_MAX_ENUM>::Entry buttonEntries[];
 	static EnumMap<love::mouse::Mouse::Button, Uint8, love::mouse::Mouse::BUTTON_MAX_ENUM> buttons;
 
-}; // System
+}; // Event
 
 } // sdl
 } // event

src/modules/graphics/opengl/ParticleSystem.cpp

@@ -276,8 +276,8 @@ void ParticleSystem::initParticle(Particle *p, float t)
 	min = speedMin;
 	max = speedMax;
 	float speed = (float) rng.random(min, max);
-	p->speed = love::Vector(cosf(p->direction), sinf(p->direction));
-	p->speed *= speed;
+	p->velocity = love::Vector(cosf(p->direction), sinf(p->direction));
+	p->velocity *= speed;
 
 	p->linearAcceleration.x = (float) rng.random(linearAccelerationMin.x, linearAccelerationMax.x);
 	p->linearAcceleration.y = (float) rng.random(linearAccelerationMin.y, linearAccelerationMax.y);
@@ -302,7 +302,7 @@ void ParticleSystem::initParticle(Particle *p, float t)
 
 	p->angle = p->rotation;
 	if (relativeRotation)
-		p->angle += atan2f(p->speed.y, p->speed.x);
+		p->angle += atan2f(p->velocity.y, p->velocity.x);
 
 	p->color = colors[0];
 }
@@ -907,11 +907,11 @@ void ParticleSystem::update(float dt)
 			// Resize tangential.
 			tangential *= p->tangentialAcceleration;
 
-			// Update position.
-			p->speed += (radial+tangential+p->linearAcceleration)*dt;
+			// Update velocity.
+			p->velocity += (radial + tangential + p->linearAcceleration) * dt;
 
 			// Modify position.
-			ppos += p->speed * dt;
+			ppos += p->velocity * dt;
 
 			p->position[0] = ppos.getX();
 			p->position[1] = ppos.getY();
@@ -924,7 +924,7 @@ void ParticleSystem::update(float dt)
 			p->angle = p->rotation;
 
 			if (relativeRotation)
-				p->angle += atan2f(p->speed.y, p->speed.x);
+				p->angle += atan2f(p->velocity.y, p->velocity.x);
 
 			// Change size according to given intervals:
 			// i = 0       1       2      3          n-1

src/modules/graphics/opengl/ParticleSystem.h

@@ -516,7 +516,7 @@ protected:
 		// Particles gravitate towards this point.
 		love::Vector origin;
 
-		love::Vector speed;
+		love::Vector velocity;
 		love::Vector linearAcceleration;
 		float radialAcceleration;
 		float tangentialAcceleration;

src/modules/graphics/opengl/Shader.cpp

@@ -186,8 +186,16 @@ void Shader::createProgram(const std::vector<GLuint> &shaderids)
 	// Bind generic vertex attribute indices to names in the shader.
 	for (int i = 0; i < int(OpenGL::ATTRIB_MAX_ENUM); i++)
 	{
+		OpenGL::VertexAttrib attrib = (OpenGL::VertexAttrib) i;
+
+		// FIXME: We skip this both because pseudo-instancing is temporarily
+		// disabled (see graphics.lua), and because binding a non-existant
+		// attribute name to a location causes a shader linker warning.
+		if (attrib == OpenGL::ATTRIB_PSEUDO_INSTANCE_ID)
+			continue;
+
 		const char *name = nullptr;
-		if (attribNames.find((OpenGL::VertexAttrib) i, name))
+		if (attribNames.find(attrib, name))
 			glBindAttribLocation(program, i, (const GLchar *) name);
 	}
 
@@ -247,7 +255,7 @@ void Shader::mapActiveUniforms()
 		}
 
 		// If this is a built-in (LOVE-created) uniform, store the location.
-		BuiltinExtern builtin;
+		BuiltinUniform builtin;
 		if (builtinNames.find(u.name.c_str(), builtin))
 			builtinUniforms[int(builtin)] = u.location;
 
@@ -652,19 +660,36 @@ int Shader::getTextureUnit(const std::string &name)
 	return texunit;
 }
 
+Shader::UniformType Shader::getExternVariable(const std::string &name, int &components, int &count)
+{
+	auto it = uniforms.find(name);
+
+	if (it == uniforms.end())
+	{
+		components = 0;
+		count = 0;
+		return UNIFORM_UNKNOWN;
+	}
+
+	components = getUniformTypeSize(it->second.type);
+	count = (int) it->second.count;
+
+	return it->second.baseType;
+}
+
 bool Shader::hasVertexAttrib(OpenGL::VertexAttrib attrib) const
 {
 	return vertexAttributes[int(attrib)] != -1;
 }
 
-bool Shader::hasBuiltinExtern(BuiltinExtern builtin) const
+bool Shader::hasBuiltinUniform(BuiltinUniform builtin) const
 {
 	return builtinUniforms[int(builtin)] != -1;
 }
 
-bool Shader::sendBuiltinFloat(BuiltinExtern builtin, int size, const GLfloat *vec, int count)
+bool Shader::sendBuiltinFloat(BuiltinUniform builtin, int size, const GLfloat *vec, int count)
 {
-	if (!hasBuiltinExtern(builtin))
+	if (!hasBuiltinUniform(builtin))
 		return false;
 
 	GLint location = builtinUniforms[int(builtin)];
@@ -754,6 +779,16 @@ bool Shader::isSupported()
 	return getGLSLVersion() >= "1.2";
 }
 
+bool Shader::getConstant(const char *in, UniformType &out)
+{
+	return uniformTypes.find(in, out);
+}
+
+bool Shader::getConstant(UniformType in, const char *&out)
+{
+	return uniformTypes.find(in, out);
+}
+
 StringMap<Shader::ShaderType, Shader::TYPE_MAX_ENUM>::Entry Shader::typeNameEntries[] =
 {
 	{"vertex", Shader::TYPE_VERTEX},
@@ -762,6 +797,17 @@ StringMap<Shader::ShaderType, Shader::TYPE_MAX_ENUM>::Entry Shader::typeNameEntr
 
 StringMap<Shader::ShaderType, Shader::TYPE_MAX_ENUM> Shader::typeNames(Shader::typeNameEntries, sizeof(Shader::typeNameEntries));
 
+StringMap<Shader::UniformType, Shader::UNIFORM_MAX_ENUM>::Entry Shader::uniformTypeEntries[] =
+{
+	{"float", Shader::UNIFORM_FLOAT},
+	{"int", Shader::UNIFORM_INT},
+	{"bool", Shader::UNIFORM_BOOL},
+	{"image", Shader::UNIFORM_SAMPLER},
+	{"unknown", Shader::UNIFORM_UNKNOWN},
+};
+
+StringMap<Shader::UniformType, Shader::UNIFORM_MAX_ENUM> Shader::uniformTypes(Shader::uniformTypeEntries, sizeof(Shader::uniformTypeEntries));
+
 StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM>::Entry Shader::attribNameEntries[] =
 {
 	{"love_PseudoInstanceID", OpenGL::ATTRIB_PSEUDO_INSTANCE_ID},
@@ -769,12 +815,12 @@ StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM>::Entry Shader::attribNa
 
 StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM> Shader::attribNames(Shader::attribNameEntries, sizeof(Shader::attribNameEntries));
 
-StringMap<Shader::BuiltinExtern, Shader::BUILTIN_MAX_ENUM>::Entry Shader::builtinNameEntries[] =
+StringMap<Shader::BuiltinUniform, Shader::BUILTIN_MAX_ENUM>::Entry Shader::builtinNameEntries[] =
 {
 	{"love_ScreenSize", Shader::BUILTIN_SCREEN_SIZE},
 };
 
-StringMap<Shader::BuiltinExtern, Shader::BUILTIN_MAX_ENUM> Shader::builtinNames(Shader::builtinNameEntries, sizeof(Shader::builtinNameEntries));
+StringMap<Shader::BuiltinUniform, Shader::BUILTIN_MAX_ENUM> Shader::builtinNames(Shader::builtinNameEntries, sizeof(Shader::builtinNameEntries));
 
 } // opengl
 } // graphics

src/modules/graphics/opengl/Shader.h

@@ -56,13 +56,24 @@ public:
 		TYPE_MAX_ENUM
 	};
 
-	// Built-in extern (uniform) variables.
-	enum BuiltinExtern
+	// Built-in uniform (extern) variables.
+	enum BuiltinUniform
 	{
 		BUILTIN_SCREEN_SIZE,
 		BUILTIN_MAX_ENUM
 	};
 
+	// Types of potential uniform (extern) variables used in love's shaders.
+	enum UniformType
+	{
+		UNIFORM_FLOAT,
+		UNIFORM_INT,
+		UNIFORM_BOOL,
+		UNIFORM_SAMPLER,
+		UNIFORM_UNKNOWN,
+		UNIFORM_MAX_ENUM
+	};
+
 	// Type for a list of shader source codes in the form of sources[shadertype] = code
 	typedef std::map<ShaderType, std::string> ShaderSources;
 
@@ -135,12 +146,25 @@ public:
 	 **/
 	void sendTexture(const std::string &name, Texture *texture);
 
+	/**
+	 * Gets the type, number of components, and number of array elements of
+	 * an active 'extern' (uniform) variable in the shader. If a uniform
+	 * variable with the specified name doesn't exist, returns UNIFORM_UNKNOWN
+	 * and sets the 'components' and 'count' values to 0.
+	 *
+	 * @param name The name of the uniform variable in the source code.
+	 * @param[out] components Number of components of the variable (2 for vec2.)
+	 * @param[out] count Number of array elements, if the variable is an array.
+	 * @return The base type of the uniform variable.
+	 **/
+	UniformType getExternVariable(const std::string &name, int &components, int &count);
+
 	/**
 	 * Internal use only.
 	 **/
 	bool hasVertexAttrib(OpenGL::VertexAttrib attrib) const;
-	bool hasBuiltinExtern(BuiltinExtern builtin) const;
-	bool sendBuiltinFloat(BuiltinExtern builtin, int size, const GLfloat *m, int count);
+	bool hasBuiltinUniform(BuiltinUniform builtin) const;
+	bool sendBuiltinFloat(BuiltinUniform builtin, int size, const GLfloat *m, int count);
 	void checkSetScreenParams();
 
 	const std::map<std::string, Object *> &getBoundRetainables() const;
@@ -148,17 +172,10 @@ public:
 	static std::string getGLSLVersion();
 	static bool isSupported();
 
-private:
+	static bool getConstant(const char *in, UniformType &out);
+	static bool getConstant(UniformType in, const char *&out);
 
-	// Types of potential uniform variables used in love's shaders.
-	enum UniformType
-	{
-		UNIFORM_FLOAT,
-		UNIFORM_INT,
-		UNIFORM_BOOL,
-		UNIFORM_SAMPLER,
-		UNIFORM_UNKNOWN
-	};
+private:
 
 	// Represents a single uniform/extern shader variable.
 	struct Uniform
@@ -227,13 +244,16 @@ private:
 	static StringMap<ShaderType, TYPE_MAX_ENUM>::Entry typeNameEntries[];
 	static StringMap<ShaderType, TYPE_MAX_ENUM> typeNames;
 
+	static StringMap<UniformType, UNIFORM_MAX_ENUM>::Entry uniformTypeEntries[];
+	static StringMap<UniformType, UNIFORM_MAX_ENUM> uniformTypes;
+
 	// Names for the generic vertex attributes used by love.
 	static StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM>::Entry attribNameEntries[];
 	static StringMap<OpenGL::VertexAttrib, OpenGL::ATTRIB_MAX_ENUM> attribNames;
 
 	// Names for the built-in uniform variables.
-	static StringMap<BuiltinExtern, BUILTIN_MAX_ENUM>::Entry builtinNameEntries[];
-	static StringMap<BuiltinExtern, BUILTIN_MAX_ENUM> builtinNames;
+	static StringMap<BuiltinUniform, BUILTIN_MAX_ENUM>::Entry builtinNameEntries[];
+	static StringMap<BuiltinUniform, BUILTIN_MAX_ENUM> builtinNames;
 };
 
 } // opengl

src/modules/graphics/opengl/SpriteBatch.cpp

@@ -111,7 +111,7 @@ int SpriteBatch::add(float x, float y, float a, float sx, float sy, float ox, fl
 	memcpy(sprite, texture->getVertices(), sizeof(Vertex) * 4);
 
 	// Transform.
-	static Matrix t;
+	Matrix t;
 	t.setTransformation(x, y, a, sx, sy, ox, oy, kx, ky);
 	t.transform(sprite, sprite, 4);
 
@@ -138,7 +138,7 @@ int SpriteBatch::addq(Quad *quad, float x, float y, float a, float sx, float sy,
 	// Needed for colors.
 	memcpy(sprite, quad->getVertices(), sizeof(Vertex) * 4);
 
-	static Matrix t;
+	Matrix t;
 	t.setTransformation(x, y, a, sx, sy, ox, oy, kx, ky);
 	t.transform(sprite, sprite, 4);
 

src/modules/graphics/opengl/wrap_Shader.cpp

@@ -346,6 +346,38 @@ int w_Shader_send(lua_State *L)
 	return luaL_argerror(L, 3, "number, boolean, table, image, or canvas expected");
 }
 
+int w_Shader_getExternVariable(lua_State *L)
+{
+	Shader *shader = luax_checkshader(L, 1);
+	const char *name = luaL_checkstring(L, 2);
+
+	int components = 0;
+	int arrayelements = 0;
+	Shader::UniformType type = Shader::UNIFORM_UNKNOWN;
+
+	type = shader->getExternVariable(name, components, arrayelements);
+
+	// Check if the variable exists (function will set components to 0 if not.)
+	if (components > 0)
+	{
+		const char *tname = nullptr;
+		if (!Shader::getConstant(type, tname))
+			return luaL_error(L, "Unknown extern variable type name.");
+
+		lua_pushstring(L, tname);
+		lua_pushinteger(L, components);
+		lua_pushinteger(L, arrayelements);
+	}
+	else
+	{
+		lua_pushnil(L);
+		lua_pushnil(L);
+		lua_pushnil(L);
+	}
+
+	return 3;
+}
+
 static const luaL_Reg functions[] =
 {
 	{ "getWarnings", w_Shader_getWarnings },
@@ -355,6 +387,7 @@ static const luaL_Reg functions[] =
 	{ "sendMatrix",  w_Shader_sendMatrix },
 	{ "sendTexture", w_Shader_sendTexture },
 	{ "send",        w_Shader_send },
+	{ "getExternVariable", w_Shader_getExternVariable },
 	{ 0, 0 }
 };
 

src/modules/graphics/opengl/wrap_Shader.h

@@ -38,6 +38,7 @@ int w_Shader_sendFloat(lua_State *L);
 int w_Shader_sendMatrix(lua_State *L);
 int w_Shader_sendTexture(lua_State *L);
 int w_Shader_send(lua_State *L);
+int w_Shader_getExternVariable(lua_State *L);
 extern "C" int luaopen_shader(lua_State *L);
 
 } // opengl

src/modules/joystick/Joystick.cpp

@@ -29,7 +29,7 @@ namespace love
 namespace joystick
 {
 
-float Joystick::clampval(float x) const
+float Joystick::clampval(float x)
 {
 	if (fabsf(x) < 0.01)
 		return 0.0f;

src/modules/joystick/Joystick.h

@@ -173,9 +173,7 @@ public:
 	static bool getConstant(const char *in, InputType &out);
 	static bool getConstant(InputType in, const char *&out);
 
-protected:
-
-	float clampval(float x) const;
+	static float clampval(float x);
 
 private:
 

src/modules/keyboard/sdl/Keyboard.cpp

@@ -51,12 +51,11 @@ bool Keyboard::hasKeyRepeat() const
 
 bool Keyboard::isDown(Key *keylist) const
 {
-	const Uint8 *keystate = SDL_GetKeyboardState(0);
-	std::map<Key, SDL_Keycode>::const_iterator it;
+	const Uint8 *keystate = SDL_GetKeyboardState(nullptr);
 
 	for (Key key = *keylist; key != KEY_MAX_ENUM; key = *(++keylist))
 	{
-		it = keys.find(key);
+		auto it = keys.find(key);
 		if (it != keys.end() && keystate[SDL_GetScancodeFromKey(it->second)])
 			return true;
 	}

src/modules/keyboard/sdl/Keyboard.h

@@ -56,6 +56,8 @@ public:
 
 private:
 
+	// Whether holding down a key triggers repeated key press events.
+	// The real implementation is in love::event::sdl::Event::Convert.
 	bool key_repeat;
 
 	static std::map<Key, SDL_Keycode> createKeyMap();

src/modules/keyboard/wrap_Keyboard.cpp

@@ -29,7 +29,7 @@ namespace love
 namespace keyboard
 {
 
-static Keyboard *instance = 0;
+static Keyboard *instance = nullptr;
 
 int w_setKeyRepeat(lua_State *L)
 {
@@ -87,7 +87,7 @@ static const luaL_Reg functions[] =
 
 extern "C" int luaopen_love_keyboard(lua_State *L)
 {
-	if (instance == 0)
+	if (instance == nullptr)
 	{
 		EXCEPT_GUARD(instance = new love::keyboard::sdl::Keyboard();)
 	}

src/modules/math/RandomGenerator.cpp

@@ -77,7 +77,7 @@ void RandomGenerator::setSeed(RandomGenerator::Seed newseed)
 {
 	// 0 xor 0 is still 0, so Xorshift can't generate new numbers.
 	if (newseed.b64 == 0)
-		throw love::Exception("Invalid random seed.");
+		throw love::Exception("Random seed cannot be 0.");
 
 	seed = newseed;
 	rng_state = seed;

src/modules/mouse/sdl/Cursor.cpp

@@ -30,7 +30,7 @@ namespace sdl
 {
 
 Cursor::Cursor(image::ImageData *data, int hotx, int hoty)
-	: cursor(0)
+	: cursor(nullptr)
 	, type(CURSORTYPE_IMAGE)
 	, systemType(CURSOR_MAX_ENUM)
 {
@@ -63,7 +63,7 @@ Cursor::Cursor(image::ImageData *data, int hotx, int hoty)
 }
 
 Cursor::Cursor(mouse::Cursor::SystemCursor cursortype)
-	: cursor(0)
+	: cursor(nullptr)
 	, type(CURSORTYPE_SYSTEM)
 	, systemType(cursortype)
 {

src/modules/mouse/sdl/Mouse.cpp

@@ -71,7 +71,7 @@ const char *Mouse::getName() const
 }
 
 Mouse::Mouse()
-	: curCursor(0)
+	: curCursor(nullptr)
 {
 }
 
@@ -187,7 +187,7 @@ void Mouse::setVisible(bool visible)
 
 bool Mouse::isDown(Button *buttonlist) const
 {
-	Uint32 buttonstate = SDL_GetMouseState(0, 0);
+	Uint32 buttonstate = SDL_GetMouseState(nullptr, nullptr);
 
 	for (Button button = *buttonlist; button != BUTTON_MAX_ENUM; button = *(++buttonlist))
 	{

src/modules/mouse/wrap_Cursor.cpp

@@ -36,7 +36,7 @@ int w_Cursor_getType(lua_State *L)
 	Cursor *cursor = luax_checkcursor(L, 1);
 
 	Cursor::CursorType ctype = cursor->getType();
-	const char *typestr = 0;
+	const char *typestr = nullptr;
 
 	if (ctype == Cursor::CURSORTYPE_IMAGE)
 		mouse::Cursor::getConstant(ctype, typestr);

src/modules/mouse/wrap_Mouse.cpp

@@ -30,11 +30,11 @@ namespace love
 namespace mouse
 {
 
-static Mouse *instance = 0;
+static Mouse *instance = nullptr;
 
 int w_newCursor(lua_State *L)
 {
-	Cursor *cursor = 0;
+	Cursor *cursor = nullptr;
 
 	if (lua_isstring(L, 1) || luax_istype(L, 1, FILESYSTEM_FILE_T) || luax_istype(L, 1, FILESYSTEM_FILE_DATA_T))
 		luax_convobj(L, 1, "image", "newImageData");
@@ -212,7 +212,7 @@ static const lua_CFunction types[] =
 
 extern "C" int luaopen_love_mouse(lua_State *L)
 {
-	if (instance == 0)
+	if (instance == nullptr)
 	{
 		EXCEPT_GUARD(instance = new love::mouse::sdl::Mouse();)
 	}

src/modules/physics/box2d/Physics.cpp

@@ -133,12 +133,12 @@ int Physics::newPolygonShape(lua_State *L)
 int Physics::newChainShape(lua_State *L)
 {
 	int argc = lua_gettop(L)-1; // first argument is looping
+	if (argc % 2 != 0)
+		return luaL_error(L, "Number of vertex components must be a multiple of two.");
+
 	int vcount = (int)argc/2;
-
 	b2ChainShape *s = new b2ChainShape();
-
 	bool loop = luax_toboolean(L, 1);
-
 	b2Vec2 *vecs = new b2Vec2[vcount];
 
 	for (int i = 0; i<vcount; i++)
@@ -166,7 +166,6 @@ int Physics::newChainShape(lua_State *L)
 	delete[] vecs;
 
 	ChainShape *c = new ChainShape(s);
-
 	luax_pushtype(L, "ChainShape", PHYSICS_CHAIN_SHAPE_T, c);
 	return 1;
 }

src/modules/system/wrap_System.cpp

@@ -27,7 +27,7 @@ namespace love
 namespace system
 {
 
-static System *instance = 0;
+static System *instance = nullptr;
 
 int w_getOS(lua_State *L)
 {
@@ -99,7 +99,7 @@ static const luaL_Reg functions[] =
 
 extern "C" int luaopen_love_system(lua_State *L)
 {
-	if (instance == 0)
+	if (instance == nullptr)
 	{
 		instance = new love::system::sdl::System();
 	}
@@ -111,7 +111,7 @@ extern "C" int luaopen_love_system(lua_State *L)
 	w.name = "system";
 	w.flags = MODULE_T;
 	w.functions = functions;
-	w.types = 0;
+	w.types = nullptr;
 
 	return luax_register_module(L, w);
 }

src/modules/thread/Channel.h

@@ -26,13 +26,14 @@
 #include <string>
 
 // LOVE
-#include <common/Variant.h>
-#include <thread/threads.h>
+#include "common/Variant.h"
+#include "threads.h"
 
 namespace love
 {
 namespace thread
 {
+
 class Channel : public love::Object
 {
 // FOR WRAPPER USE ONLY
@@ -40,8 +41,10 @@ friend void retainVariant(Channel *, Variant *);
 friend void releaseVariant(Channel *, Variant *);
 
 public:
+
 	Channel();
 	~Channel();
+
 	static Channel *getChannel(const std::string &name);
 
 	unsigned long push(Variant *var);
@@ -56,6 +59,7 @@ public:
 	void release();
 
 private:
+
 	Channel(const std::string &name);
 	void lockMutex();
 	void unlockMutex();
@@ -68,7 +72,9 @@ private:
 
 	unsigned long sent;
 	unsigned long received;
+
 }; // Channel
+
 } // thread
 } // love
 

src/modules/thread/LuaThread.cpp

@@ -38,6 +38,7 @@ LuaThread::LuaThread(const std::string &name, love::Data *code)
 	, nargs(0)
 {
 	code->retain();
+	threadName = name;
 }
 
 LuaThread::~LuaThread()

src/modules/thread/LuaThread.h

@@ -25,15 +25,16 @@
 #include <string>
 
 // LOVE
-#include <common/Data.h>
-#include <common/Object.h>
-#include <common/Variant.h>
-#include <thread/threads.h>
+#include "common/Data.h"
+#include "common/Object.h"
+#include "common/Variant.h"
+#include "threads.h"
 
 namespace love
 {
 namespace thread
 {
+
 class LuaThread : public love::Object, public Threadable
 {
 public:
@@ -55,7 +56,9 @@ private:
 
 	Variant **args;
 	int nargs;
-};
+
+}; // LuaThread
+
 } // thread
 } // love
 

src/modules/thread/Thread.h

@@ -22,8 +22,8 @@
 #define LOVE_THREAD_THREAD_H
 
 // LOVE
-#include <common/runtime.h>
-#include <common/Object.h>
+#include "common/runtime.h"
+#include "common/Object.h"
 
 namespace love
 {

src/modules/thread/sdl/Thread.cpp

@@ -51,7 +51,7 @@ bool Thread::start()
 		return false;
 	if (thread) // Clean old handle up
 		SDL_WaitThread(thread, 0);
-	thread = SDL_CreateThread(thread_runner, NULL, this);
+	thread = SDL_CreateThread(thread_runner, t->getThreadName(), this);
 	running = (thread != 0);
 	return running;
 }

src/modules/thread/sdl/Thread.h

@@ -22,7 +22,7 @@
 #define LOVE_THREAD_SDL_THREAD_H
 
 // LOVE
-#include <thread/Thread.h>
+#include "thread/Thread.h"
 #include "threads.h"
 
 // SDL
@@ -34,6 +34,7 @@ namespace thread
 {
 namespace sdl
 {
+
 class Thread : public thread::Thread
 {
 public:

src/modules/thread/sdl/threads.cpp

@@ -27,6 +27,7 @@ namespace thread
 {
 namespace sdl
 {
+
 Mutex::Mutex()
 {
 	mutex = SDL_CreateMutex();
@@ -81,6 +82,11 @@ bool Conditional::wait(thread::Mutex *_mutex, int timeout)
 
 } // sdl
 
+
+/**
+ * Implementations of the functions declared in src/modules/threads.h.
+ **/
+
 thread::Mutex *newMutex()
 {
 	return new sdl::Mutex();

src/modules/thread/sdl/threads.h

@@ -21,8 +21,8 @@
 #ifndef LOVE_THREAD_SDL_THREADS_H
 #define LOVE_THREAD_SDL_THREADS_H
 
-#include <common/config.h>
-#include <thread/threads.h>
+#include "common/config.h"
+#include "thread/threads.h"
 
 #include <SDL_thread.h>
 
@@ -32,11 +32,13 @@ namespace thread
 {
 namespace sdl
 {
+
 class Conditional;
 
 class Mutex : public thread::Mutex
 {
 public:
+
 	Mutex();
 	~Mutex();
 
@@ -44,15 +46,18 @@ public:
 	void unlock();
 
 private:
+
 	SDL_mutex *mutex;
 	Mutex(const Mutex&/* mutex*/) {}
 
 	friend class Conditional;
-};
+
+}; // Mutex
 
 class Conditional : public thread::Conditional
 {
 public:
+
 	Conditional();
 	~Conditional();
 
@@ -61,8 +66,10 @@ public:
 	bool wait(thread::Mutex *mutex, int timeout=-1);
 
 private:
+
 	SDL_cond *cond;
-};
+
+}; // Conditional
 
 } // sdl
 } // thread

src/modules/thread/threads.cpp

@@ -99,5 +99,10 @@ bool Threadable::isRunning() const
 	return owner->isRunning();
 }
 
+const char *Threadable::getThreadName() const
+{
+	return threadName.empty() ? nullptr : threadName.c_str();
+}
+
 } // thread
 } // love

src/modules/thread/threads.h

@@ -21,9 +21,13 @@
 #ifndef LOVE_THREAD_THREADS_H
 #define LOVE_THREAD_THREADS_H
 
-#include <common/config.h>
+// LOVE
+#include "common/config.h"
 #include "Thread.h"
 
+// C++
+#include <string>
+
 namespace love
 {
 namespace thread
@@ -83,9 +87,13 @@ public:
 	bool start();
 	void wait();
 	bool isRunning() const;
+	const char *getThreadName() const;
 
 protected:
+
 	Thread *owner;
+	std::string threadName;
+
 };
 
 Mutex *newMutex();