Fix some minor code issues all over the place

src/client/content_cao.cpp

@@ -1165,7 +1165,7 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
 		}
 	}
 
-	if (!getParent() && std::fabs(m_prop.automatic_rotate) > 0.001) {
+	if (!getParent() && node && fabs(m_prop.automatic_rotate) > 0.001f) {
 		// This is the child node's rotation. It is only used for automatic_rotate.
 		v3f local_rot = node->getRotation();
 		local_rot.Y = modulo360f(local_rot.Y - dtime * core::RADTODEG *
@@ -1174,7 +1174,7 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
 	}
 
 	if (!getParent() && m_prop.automatic_face_movement_dir &&
-			(fabs(m_velocity.Z) > 0.001 || fabs(m_velocity.X) > 0.001)) {
+			(fabs(m_velocity.Z) > 0.001f || fabs(m_velocity.X) > 0.001f)) {
 		float target_yaw = atan2(m_velocity.Z, m_velocity.X) * 180 / M_PI
 				+ m_prop.automatic_face_movement_dir_offset;
 		float max_rotation_per_sec =

src/client/game.cpp

@@ -186,7 +186,7 @@ struct LocalFormspecHandler : public TextDest
 			return;
 		}
 
-		if (m_client && m_client->modsLoaded())
+		if (m_client->modsLoaded())
 			m_client->getScript()->on_formspec_input(m_formname, fields);
 	}
 
@@ -583,7 +583,7 @@ public:
 
 	virtual IShaderConstantSetter* create()
 	{
-		GameGlobalShaderConstantSetter *scs = new GameGlobalShaderConstantSetter(
+		auto *scs = new GameGlobalShaderConstantSetter(
 				m_sky, m_force_fog_off, m_fog_range, m_client);
 		if (!m_sky)
 			created_nosky.push_back(scs);
@@ -1338,7 +1338,7 @@ bool Game::createClient(const GameStartData &start_data)
 		return false;
 	}
 
-	GameGlobalShaderConstantSetterFactory *scsf = new GameGlobalShaderConstantSetterFactory(
+	auto *scsf = new GameGlobalShaderConstantSetterFactory(
 			&m_flags.force_fog_off, &runData.fog_range, client);
 	shader_src->addShaderConstantSetterFactory(scsf);
 
@@ -1348,20 +1348,14 @@ bool Game::createClient(const GameStartData &start_data)
 	/* Camera
 	 */
 	camera = new Camera(*draw_control, client);
-	if (!camera || !camera->successfullyCreated(*error_message))
+	if (!camera->successfullyCreated(*error_message))
 		return false;
 	client->setCamera(camera);
 
 	/* Clouds
 	 */
-	if (m_cache_enable_clouds) {
+	if (m_cache_enable_clouds)
 		clouds = new Clouds(smgr, -1, time(0));
-		if (!clouds) {
-			*error_message = "Memory allocation error (clouds)";
-			errorstream << *error_message << std::endl;
-			return false;
-		}
-	}
 
 	/* Skybox
 	 */
@@ -1369,12 +1363,6 @@ bool Game::createClient(const GameStartData &start_data)
 	scsf->setSky(sky);
 	skybox = NULL;	// This is used/set later on in the main run loop
 
-	if (!sky) {
-		*error_message = "Memory allocation error sky";
-		errorstream << *error_message << std::endl;
-		return false;
-	}
-
 	/* Pre-calculated values
 	 */
 	video::ITexture *t = texture_src->getTexture("crack_anylength.png");
@@ -1404,12 +1392,6 @@ bool Game::createClient(const GameStartData &start_data)
 
 	hud = new Hud(guienv, client, player, &player->inventory);
 
-	if (!hud) {
-		*error_message = "Memory error: could not create HUD";
-		errorstream << *error_message << std::endl;
-		return false;
-	}
-
 	mapper = client->getMinimap();
 
 	if (mapper && client->modsLoaded())
@@ -1431,11 +1413,6 @@ bool Game::initGui()
 	// Chat backend and console
 	gui_chat_console = new GUIChatConsole(guienv, guienv->getRootGUIElement(),
 			-1, chat_backend, client, &g_menumgr);
-	if (!gui_chat_console) {
-		*error_message = "Could not allocate memory for chat console";
-		errorstream << *error_message << std::endl;
-		return false;
-	}
 
 #ifdef HAVE_TOUCHSCREENGUI
 
@@ -1492,9 +1469,6 @@ bool Game::connectToServer(const GameStartData &start_data,
 			itemdef_manager, nodedef_manager, sound, eventmgr,
 			connect_address.isIPv6(), m_game_ui.get());
 
-	if (!client)
-		return false;
-
 	client->m_simple_singleplayer_mode = simple_singleplayer_mode;
 
 	infostream << "Connecting to server at ";

src/client/hud.cpp

@@ -1055,9 +1055,9 @@ void drawItemStack(
 
 	if (def.type == ITEM_TOOL && item.wear != 0) {
 		// Draw a progressbar
-		float barheight = rect.getHeight() / 16;
-		float barpad_x = rect.getWidth() / 16;
-		float barpad_y = rect.getHeight() / 16;
+		float barheight = static_cast<float>(rect.getHeight()) / 16;
+		float barpad_x = static_cast<float>(rect.getWidth()) / 16;
+		float barpad_y = static_cast<float>(rect.getHeight()) / 16;
 
 		core::rect<s32> progressrect(
 			rect.UpperLeftCorner.X + barpad_x,

src/client/mapblock_mesh.cpp

@@ -1201,13 +1201,13 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
 MapBlockMesh::~MapBlockMesh()
 {
 	for (scene::IMesh *m : m_mesh) {
-		if (m_enable_vbo && m)
+		if (m_enable_vbo) {
 			for (u32 i = 0; i < m->getMeshBufferCount(); i++) {
 				scene::IMeshBuffer *buf = m->getMeshBuffer(i);
 				RenderingEngine::get_video_driver()->removeHardwareBuffer(buf);
 			}
+		}
 		m->drop();
-		m = NULL;
 	}
 	delete m_minimap_mapblock;
 }

src/client/tile.cpp

@@ -1633,6 +1633,13 @@ bool TextureSource::generateImagePart(std::string part_of_name,
 			/* IMPORTANT: When changing this, getTextureForMesh() needs to be
 			 * updated too. */
 
+			if (!baseimg) {
+				errorstream << "generateImagePart(): baseimg == NULL "
+						<< "for part_of_name=\"" << part_of_name
+						<< "\", cancelling." << std::endl;
+				return false;
+			}
+
 			// Apply the "clean transparent" filter, if configured.
 			if (g_settings->getBool("texture_clean_transparent"))
 				imageCleanTransparent(baseimg, 127);