[CSM] Add basic HUD manipulation. (#6067)

* [CSM] Add basic HUD manipulation.

Workaround for on_connect not working right now.

1 files changed, 31 insertions, 767 deletions

diff --git a/src/hud.cpp b/src/hud.cpp
index ecd2a521d..0d2d092a7 100644
--- a/src/hud.cpp
+++ b/src/hud.cpp
@@ -1,775 +1,39 @@
-/*
-Minetest
-Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
-Copyright (C) 2010-2013 blue42u, Jonathon Anderson <anderjon@umail.iu.edu>
-Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
-
-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 "hud.h"
-#include "settings.h"
-#include "util/numeric.h"
-#include "log.h"
-#include "client.h"
-#include "inventory.h"
-#include "shader.h"
-#include "client/tile.h"
-#include "localplayer.h"
-#include "camera.h"
-#include "porting.h"
-#include "fontengine.h"
-#include "guiscalingfilter.h"
-#include "mesh.h"
-#include "wieldmesh.h"
-#include "client/renderingengine.h"
-
-#ifdef HAVE_TOUCHSCREENGUI
-#include "gui/touchscreengui.h"
-#endif
-
-Hud::Hud(gui::IGUIEnvironment *guienv, Client *client, LocalPlayer *player,
-		Inventory *inventory)
-{
-	driver            = RenderingEngine::get_video_driver();
-	this->guienv      = guienv;
-	this->client      = client;
-	this->player      = player;
-	this->inventory   = inventory;
-
-	m_hud_scaling      = g_settings->getFloat("hud_scaling");
-	m_hotbar_imagesize = floor(HOTBAR_IMAGE_SIZE *
-		RenderingEngine::getDisplayDensity() + 0.5f);
-	m_hotbar_imagesize *= m_hud_scaling;
-	m_padding = m_hotbar_imagesize / 12;
-
-	for (auto &hbar_color : hbar_colors)
-		hbar_color = video::SColor(255, 255, 255, 255);
-
-	tsrc = client->getTextureSource();
-
-	v3f crosshair_color = g_settings->getV3F("crosshair_color");
-	u32 cross_r = rangelim(myround(crosshair_color.X), 0, 255);
-	u32 cross_g = rangelim(myround(crosshair_color.Y), 0, 255);
-	u32 cross_b = rangelim(myround(crosshair_color.Z), 0, 255);
-	u32 cross_a = rangelim(g_settings->getS32("crosshair_alpha"), 0, 255);
-	crosshair_argb = video::SColor(cross_a, cross_r, cross_g, cross_b);
-
-	v3f selectionbox_color = g_settings->getV3F("selectionbox_color");
-	u32 sbox_r = rangelim(myround(selectionbox_color.X), 0, 255);
-	u32 sbox_g = rangelim(myround(selectionbox_color.Y), 0, 255);
-	u32 sbox_b = rangelim(myround(selectionbox_color.Z), 0, 255);
-	selectionbox_argb = video::SColor(255, sbox_r, sbox_g, sbox_b);
-
-	use_crosshair_image = tsrc->isKnownSourceImage("crosshair.png");
-
-	m_selection_boxes.clear();
-	m_halo_boxes.clear();
-
-	std::string mode_setting = g_settings->get("node_highlighting");
-
-	if (mode_setting == "halo") {
-		m_mode = HIGHLIGHT_HALO;
-	} else if (mode_setting == "none") {
-		m_mode = HIGHLIGHT_NONE;
-	} else {
-		m_mode = HIGHLIGHT_BOX;
-	}
-
-	m_selection_material.Lighting = false;
-
-	if (g_settings->getBool("enable_shaders")) {
-		IShaderSource *shdrsrc = client->getShaderSource();
-		u16 shader_id = shdrsrc->getShader(
-			m_mode == HIGHLIGHT_HALO ? "selection_shader" : "default_shader", 1, 1);
-		m_selection_material.MaterialType = shdrsrc->getShaderInfo(shader_id).material;
-	} else {
-		m_selection_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
-	}
-
-	if (m_mode == HIGHLIGHT_BOX) {
-		m_selection_material.Thickness =
-			rangelim(g_settings->getS16("selectionbox_width"), 1, 5);
-	} else if (m_mode == HIGHLIGHT_HALO) {
-		m_selection_material.setTexture(0, tsrc->getTextureForMesh("halo.png"));
-		m_selection_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
-	} else {
-		m_selection_material.MaterialType = video::EMT_SOLID;
-	}
-}
-
-Hud::~Hud()
-{
-	if (m_selection_mesh)
-		m_selection_mesh->drop();
-}
-
-void Hud::drawItem(const ItemStack &item, const core::rect<s32>& rect,
-		bool selected)
-{
-	if (selected) {
-		/* draw hihlighting around selected item */
-		if (use_hotbar_selected_image) {
-			core::rect<s32> imgrect2 = rect;
-			imgrect2.UpperLeftCorner.X  -= (m_padding*2);
-			imgrect2.UpperLeftCorner.Y  -= (m_padding*2);
-			imgrect2.LowerRightCorner.X += (m_padding*2);
-			imgrect2.LowerRightCorner.Y += (m_padding*2);
-				video::ITexture *texture = tsrc->getTexture(hotbar_selected_image);
-				core::dimension2di imgsize(texture->getOriginalSize());
-			draw2DImageFilterScaled(driver, texture, imgrect2,
-					core::rect<s32>(core::position2d<s32>(0,0), imgsize),
-					NULL, hbar_colors, true);
-		} else {
-			video::SColor c_outside(255,255,0,0);
-			//video::SColor c_outside(255,0,0,0);
-			//video::SColor c_inside(255,192,192,192);
-			s32 x1 = rect.UpperLeftCorner.X;
-			s32 y1 = rect.UpperLeftCorner.Y;
-			s32 x2 = rect.LowerRightCorner.X;
-			s32 y2 = rect.LowerRightCorner.Y;
-			// Black base borders
-			driver->draw2DRectangle(c_outside,
-				core::rect<s32>(
-				v2s32(x1 - m_padding, y1 - m_padding),
-				v2s32(x2 + m_padding, y1)
-				), NULL);
-			driver->draw2DRectangle(c_outside,
-				core::rect<s32>(
-				v2s32(x1 - m_padding, y2),
-				v2s32(x2 + m_padding, y2 + m_padding)
-				), NULL);
-			driver->draw2DRectangle(c_outside,
-				core::rect<s32>(
-				v2s32(x1 - m_padding, y1),
-					v2s32(x1, y2)
-				), NULL);
-			driver->draw2DRectangle(c_outside,
-				core::rect<s32>(
-					v2s32(x2, y1),
-				v2s32(x2 + m_padding, y2)
-				), NULL);
-			/*// Light inside borders
-			driver->draw2DRectangle(c_inside,
-				core::rect<s32>(
-					v2s32(x1 - padding/2, y1 - padding/2),
-					v2s32(x2 + padding/2, y1)
-				), NULL);
-			driver->draw2DRectangle(c_inside,
-				core::rect<s32>(
-					v2s32(x1 - padding/2, y2),
-					v2s32(x2 + padding/2, y2 + padding/2)
-				), NULL);
-			driver->draw2DRectangle(c_inside,
-				core::rect<s32>(
-					v2s32(x1 - padding/2, y1),
-					v2s32(x1, y2)
-				), NULL);
-			driver->draw2DRectangle(c_inside,
-				core::rect<s32>(
-					v2s32(x2, y1),
-					v2s32(x2 + padding/2, y2)
-				), NULL);
-			*/
-		}
-	}
-
-	video::SColor bgcolor2(128, 0, 0, 0);
-	if (!use_hotbar_image)
-		driver->draw2DRectangle(bgcolor2, rect, NULL);
-	drawItemStack(driver, g_fontengine->getFont(), item, rect, NULL,
-		client, selected ? IT_ROT_SELECTED : IT_ROT_NONE);
-}
-
-//NOTE: selectitem = 0 -> no selected; selectitem 1-based
-void Hud::drawItems(v2s32 upperleftpos, v2s32 screen_offset, s32 itemcount,
-		s32 inv_offset, InventoryList *mainlist, u16 selectitem, u16 direction)
-{
-#ifdef HAVE_TOUCHSCREENGUI
-	if (g_touchscreengui && inv_offset == 0)
-		g_touchscreengui->resetHud();
-#endif
-
-	s32 height  = m_hotbar_imagesize + m_padding * 2;
-	s32 width   = (itemcount - inv_offset) * (m_hotbar_imagesize + m_padding * 2);
-
-	if (direction == HUD_DIR_TOP_BOTTOM || direction == HUD_DIR_BOTTOM_TOP) {
-		s32 tmp = height;
-		height = width;
-		width = tmp;
-	}
-
-	// Position of upper left corner of bar
-	v2s32 pos = screen_offset;
-	pos.X *= m_hud_scaling * RenderingEngine::getDisplayDensity();
-	pos.Y *= m_hud_scaling * RenderingEngine::getDisplayDensity();
-	pos += upperleftpos;
-
-	// Store hotbar_image in member variable, used by drawItem()
-	if (hotbar_image != player->hotbar_image) {
-		hotbar_image = player->hotbar_image;
-		if (!hotbar_image.empty())
-			use_hotbar_image = tsrc->isKnownSourceImage(hotbar_image);
-		else
-			use_hotbar_image = false;
-	}
-
-	// Store hotbar_selected_image in member variable, used by drawItem()
-	if (hotbar_selected_image != player->hotbar_selected_image) {
-		hotbar_selected_image = player->hotbar_selected_image;
-		if (!hotbar_selected_image.empty())
-			use_hotbar_selected_image = tsrc->isKnownSourceImage(hotbar_selected_image);
-		else
-			use_hotbar_selected_image = false;
-	}
-
-	// draw customized item background
-	if (use_hotbar_image) {
-		core::rect<s32> imgrect2(-m_padding/2, -m_padding/2,
-			width+m_padding/2, height+m_padding/2);
-		core::rect<s32> rect2 = imgrect2 + pos;
-		video::ITexture *texture = tsrc->getTexture(hotbar_image);
-		core::dimension2di imgsize(texture->getOriginalSize());
-		draw2DImageFilterScaled(driver, texture, rect2,
-			core::rect<s32>(core::position2d<s32>(0,0), imgsize),
-			NULL, hbar_colors, true);
-	}
-
-	// Draw items
-	core::rect<s32> imgrect(0, 0, m_hotbar_imagesize, m_hotbar_imagesize);
-	for (s32 i = inv_offset; i < itemcount && (size_t)i < mainlist->getSize(); i++) {
-		s32 fullimglen = m_hotbar_imagesize + m_padding * 2;
-
-		v2s32 steppos;
-		switch (direction) {
-		case HUD_DIR_RIGHT_LEFT:
-			steppos = v2s32(-(m_padding + (i - inv_offset) * fullimglen), m_padding);
-			break;
-		case HUD_DIR_TOP_BOTTOM:
-			steppos = v2s32(m_padding, m_padding + (i - inv_offset) * fullimglen);
-			break;
-		case HUD_DIR_BOTTOM_TOP:
-			steppos = v2s32(m_padding, -(m_padding + (i - inv_offset) * fullimglen));
-			break;
-		default:
-			steppos = v2s32(m_padding + (i - inv_offset) * fullimglen, m_padding);
-			break;
-		}
-
-		drawItem(mainlist->getItem(i), (imgrect + pos + steppos), (i + 1) == selectitem);
-
-#ifdef HAVE_TOUCHSCREENGUI
-		if (g_touchscreengui)
-			g_touchscreengui->registerHudItem(i, (imgrect + pos + steppos));
-#endif
-	}
-}
-
-
-void Hud::drawLuaElements(const v3s16 &camera_offset)
-{
-	u32 text_height = g_fontengine->getTextHeight();
-	irr::gui::IGUIFont* font = g_fontengine->getFont();
-	for (size_t i = 0; i != player->maxHudId(); i++) {
-		HudElement *e = player->getHud(i);
-		if (!e)
-			continue;
-
-		v2s32 pos(floor(e->pos.X * (float) m_screensize.X + 0.5),
-				floor(e->pos.Y * (float) m_screensize.Y + 0.5));
-		switch (e->type) {
-			case HUD_ELEM_IMAGE: {
-				video::ITexture *texture = tsrc->getTexture(e->text);
-				if (!texture)
-					continue;
-
-				const video::SColor color(255, 255, 255, 255);
-				const video::SColor colors[] = {color, color, color, color};
-				core::dimension2di imgsize(texture->getOriginalSize());
-				v2s32 dstsize(imgsize.Width * e->scale.X,
-				              imgsize.Height * e->scale.Y);
-				if (e->scale.X < 0)
-					dstsize.X = m_screensize.X * (e->scale.X * -0.01);
-				if (e->scale.Y < 0)
-					dstsize.Y = m_screensize.Y * (e->scale.Y * -0.01);
-				v2s32 offset((e->align.X - 1.0) * dstsize.X / 2,
-				             (e->align.Y - 1.0) * dstsize.Y / 2);
-				core::rect<s32> rect(0, 0, dstsize.X, dstsize.Y);
-				rect += pos + offset + v2s32(e->offset.X, e->offset.Y);
-				draw2DImageFilterScaled(driver, texture, rect,
-					core::rect<s32>(core::position2d<s32>(0,0), imgsize),
-					NULL, colors, true);
-				break; }
-			case HUD_ELEM_TEXT: {
-				video::SColor color(255, (e->number >> 16) & 0xFF,
-										 (e->number >> 8)  & 0xFF,
-										 (e->number >> 0)  & 0xFF);
-				core::rect<s32> size(0, 0, e->scale.X, text_height * e->scale.Y);
-				std::wstring text = unescape_translate(utf8_to_wide(e->text));
-				core::dimension2d<u32> textsize = font->getDimension(text.c_str());
-				v2s32 offset((e->align.X - 1.0) * (textsize.Width / 2),
-				             (e->align.Y - 1.0) * (textsize.Height / 2));
-				v2s32 offs(e->offset.X, e->offset.Y);
-				font->draw(text.c_str(), size + pos + offset + offs, color);
-				break; }
-			case HUD_ELEM_STATBAR: {
-				v2s32 offs(e->offset.X, e->offset.Y);
-				drawStatbar(pos, HUD_CORNER_UPPER, e->dir, e->text, e->number, offs, e->size);
-				break; }
-			case HUD_ELEM_INVENTORY: {
-				InventoryList *inv = inventory->getList(e->text);
-				drawItems(pos, v2s32(e->offset.X, e->offset.Y), e->number, 0,
-					inv, e->item, e->dir);
-				break; }
-			case HUD_ELEM_WAYPOINT: {
-				v3f p_pos = player->getPosition() / BS;
-				v3f w_pos = e->world_pos * BS;
-				float distance = floor(10 * p_pos.getDistanceFrom(e->world_pos)) / 10;
-				scene::ICameraSceneNode* camera =
-					RenderingEngine::get_scene_manager()->getActiveCamera();
-				w_pos -= intToFloat(camera_offset, BS);
-				core::matrix4 trans = camera->getProjectionMatrix();
-				trans *= camera->getViewMatrix();
-				f32 transformed_pos[4] = { w_pos.X, w_pos.Y, w_pos.Z, 1.0f };
-				trans.multiplyWith1x4Matrix(transformed_pos);
-				if (transformed_pos[3] < 0)
-					break;
-				f32 zDiv = transformed_pos[3] == 0.0f ? 1.0f :
-					core::reciprocal(transformed_pos[3]);
-				pos.X = m_screensize.X * (0.5 * transformed_pos[0] * zDiv + 0.5);
-				pos.Y = m_screensize.Y * (0.5 - transformed_pos[1] * zDiv * 0.5);
-				video::SColor color(255, (e->number >> 16) & 0xFF,
-										 (e->number >> 8)  & 0xFF,
-										 (e->number >> 0)  & 0xFF);
-				core::rect<s32> size(0, 0, 200, 2 * text_height);
-				std::wstring text = unescape_translate(utf8_to_wide(e->name));
-				font->draw(text.c_str(), size + pos, color);
-				std::ostringstream os;
-				os << distance << e->text;
-				text = unescape_translate(utf8_to_wide(os.str()));
-				pos.Y += text_height;
-				font->draw(text.c_str(), size + pos, color);
-				break; }
-			default:
-				infostream << "Hud::drawLuaElements: ignoring drawform " << e->type <<
-					" of hud element ID " << i << " due to unrecognized type" << std::endl;
-		}
-	}
-}
-
-
-void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture,
-		s32 count, v2s32 offset, v2s32 size)
-{
-	const video::SColor color(255, 255, 255, 255);
-	const video::SColor colors[] = {color, color, color, color};
-
-	video::ITexture *stat_texture = tsrc->getTexture(texture);
-	if (!stat_texture)
-		return;
-
-	core::dimension2di srcd(stat_texture->getOriginalSize());
-	core::dimension2di dstd;
-	if (size == v2s32()) {
-		dstd = srcd;
-	} else {
-		float size_factor = m_hud_scaling * RenderingEngine::getDisplayDensity();
-		dstd.Height = size.Y * size_factor;
-		dstd.Width  = size.X * size_factor;
-		offset.X *= size_factor;
-		offset.Y *= size_factor;
-	}
-
-	v2s32 p = pos;
-	if (corner & HUD_CORNER_LOWER)
-		p -= dstd.Height;
-
-	p += offset;
-
-	v2s32 steppos;
-	core::rect<s32> srchalfrect, dsthalfrect;
-	switch (drawdir) {
-		case HUD_DIR_RIGHT_LEFT:
-			steppos = v2s32(-1, 0);
-			srchalfrect = core::rect<s32>(srcd.Width / 2, 0, srcd.Width, srcd.Height);
-			dsthalfrect = core::rect<s32>(dstd.Width / 2, 0, dstd.Width, dstd.Height);
-			break;
-		case HUD_DIR_TOP_BOTTOM:
-			steppos = v2s32(0, 1);
-			srchalfrect = core::rect<s32>(0, 0, srcd.Width, srcd.Height / 2);
-			dsthalfrect = core::rect<s32>(0, 0, dstd.Width, dstd.Height / 2);
-			break;
-		case HUD_DIR_BOTTOM_TOP:
-			steppos = v2s32(0, -1);
-			srchalfrect = core::rect<s32>(0, srcd.Height / 2, srcd.Width, srcd.Height);
-			dsthalfrect = core::rect<s32>(0, dstd.Height / 2, dstd.Width, dstd.Height);
-			break;
-		default:
-			steppos = v2s32(1, 0);
-			srchalfrect = core::rect<s32>(0, 0, srcd.Width / 2, srcd.Height);
-			dsthalfrect = core::rect<s32>(0, 0, dstd.Width / 2, dstd.Height);
-	}
-	steppos.X *= dstd.Width;
-	steppos.Y *= dstd.Height;
 
-	for (s32 i = 0; i < count / 2; i++) {
-		core::rect<s32> srcrect(0, 0, srcd.Width, srcd.Height);
-		core::rect<s32> dstrect(0,0, dstd.Width, dstd.Height);
 
-		dstrect += p;
-		draw2DImageFilterScaled(driver, stat_texture, dstrect, srcrect, NULL, colors, true);
-		p += steppos;
-	}
-
-	if (count % 2 == 1) {
-		dsthalfrect += p;
-		draw2DImageFilterScaled(driver, stat_texture, dsthalfrect, srchalfrect, NULL, colors, true);
-	}
-}
-
-
-void Hud::drawHotbar(u16 playeritem) {
-
-	v2s32 centerlowerpos(m_displaycenter.X, m_screensize.Y);
-
-	InventoryList *mainlist = inventory->getList("main");
-	if (mainlist == NULL) {
-		//silently ignore this we may not be initialized completely
-		return;
-	}
-
-	s32 hotbar_itemcount = player->hud_hotbar_itemcount;
-	s32 width = hotbar_itemcount * (m_hotbar_imagesize + m_padding * 2);
-	v2s32 pos = centerlowerpos - v2s32(width / 2, m_hotbar_imagesize + m_padding * 3);
-
-	const v2u32 &window_size = RenderingEngine::get_instance()->getWindowSize();
-	if ( (float) width / (float) window_size.X <=
-			g_settings->getFloat("hud_hotbar_max_width")) {
-		if (player->hud_flags & HUD_FLAG_HOTBAR_VISIBLE) {
-			drawItems(pos, v2s32(0, 0), hotbar_itemcount, 0, mainlist, playeritem + 1, 0);
-		}
-	} else {
-		pos.X += width/4;
-
-		v2s32 secondpos = pos;
-		pos = pos - v2s32(0, m_hotbar_imagesize + m_padding);
-
-		if (player->hud_flags & HUD_FLAG_HOTBAR_VISIBLE) {
-			drawItems(pos, v2s32(0, 0), hotbar_itemcount / 2, 0,
-				mainlist, playeritem + 1, 0);
-			drawItems(secondpos, v2s32(0, 0), hotbar_itemcount,
-				hotbar_itemcount / 2, mainlist, playeritem + 1, 0);
-		}
-	}
-
-	//////////////////////////// compatibility code to be removed //////////////
-	// this is ugly as hell but there's no other way to keep compatibility to
-	// old servers
-	if ((player->hud_flags & HUD_FLAG_HEALTHBAR_VISIBLE)) {
-		drawStatbar(v2s32(floor(0.5 * (float)m_screensize.X + 0.5),
-			floor(1 * (float) m_screensize.Y + 0.5)),
-			HUD_CORNER_UPPER, 0, "heart.png",
-			player->hp, v2s32((-10*24)-25,-(48+24+10)), v2s32(24,24));
-	}
-
-	if ((player->hud_flags & HUD_FLAG_BREATHBAR_VISIBLE) &&
-			(player->getBreath() < 11)) {
-		drawStatbar(v2s32(floor(0.5 * (float)m_screensize.X + 0.5),
-			floor(1 * (float) m_screensize.Y + 0.5)),
-			HUD_CORNER_UPPER, 0, "bubble.png",
-			player->getBreath(), v2s32(25,-(48+24+10)), v2s32(24,24));
-	}
-	////////////////////////////////////////////////////////////////////////////
-}
-
-
-void Hud::drawCrosshair()
+const struct EnumString es_HudElementType[] =
 {
-	if (use_crosshair_image) {
-		video::ITexture *crosshair = tsrc->getTexture("crosshair.png");
-		v2u32 size  = crosshair->getOriginalSize();
-		v2s32 lsize = v2s32(m_displaycenter.X - (size.X / 2),
-				m_displaycenter.Y - (size.Y / 2));
-		driver->draw2DImage(crosshair, lsize,
-				core::rect<s32>(0, 0, size.X, size.Y),
-				0, crosshair_argb, true);
-	} else {
-		driver->draw2DLine(m_displaycenter - v2s32(10, 0),
-				m_displaycenter + v2s32(10, 0), crosshair_argb);
-		driver->draw2DLine(m_displaycenter - v2s32(0, 10),
-				m_displaycenter + v2s32(0, 10), crosshair_argb);
-	}
-}
-
-void Hud::setSelectionPos(const v3f &pos, const v3s16 &camera_offset)
-{
-	m_camera_offset = camera_offset;
-	m_selection_pos = pos;
-	m_selection_pos_with_offset = pos - intToFloat(camera_offset, BS);
-}
-
-void Hud::drawSelectionMesh()
-{
-	if (m_mode == HIGHLIGHT_BOX) {
-		// Draw 3D selection boxes
-		video::SMaterial oldmaterial = driver->getMaterial2D();
-		driver->setMaterial(m_selection_material);
-		for (std::vector<aabb3f>::const_iterator
-				i = m_selection_boxes.begin();
-				i != m_selection_boxes.end(); ++i) {
-			aabb3f box = aabb3f(
-				i->MinEdge + m_selection_pos_with_offset,
-				i->MaxEdge + m_selection_pos_with_offset);
-
-			u32 r = (selectionbox_argb.getRed() *
-					m_selection_mesh_color.getRed() / 255);
-			u32 g = (selectionbox_argb.getGreen() *
-					m_selection_mesh_color.getGreen() / 255);
-			u32 b = (selectionbox_argb.getBlue() *
-					m_selection_mesh_color.getBlue() / 255);
-			driver->draw3DBox(box, video::SColor(255, r, g, b));
-		}
-		driver->setMaterial(oldmaterial);
-	} else if (m_mode == HIGHLIGHT_HALO && m_selection_mesh) {
-		// Draw selection mesh
-		video::SMaterial oldmaterial = driver->getMaterial2D();
-		driver->setMaterial(m_selection_material);
-		setMeshColor(m_selection_mesh, m_selection_mesh_color);
-		video::SColor face_color(0,
-			MYMIN(255, m_selection_mesh_color.getRed() * 1.5),
-			MYMIN(255, m_selection_mesh_color.getGreen() * 1.5),
-			MYMIN(255, m_selection_mesh_color.getBlue() * 1.5));
-		setMeshColorByNormal(m_selection_mesh, m_selected_face_normal,
-			face_color);
-		scene::IMesh* mesh = cloneMesh(m_selection_mesh);
-		translateMesh(mesh, m_selection_pos_with_offset);
-		u32 mc = m_selection_mesh->getMeshBufferCount();
-		for (u32 i = 0; i < mc; i++) {
-			scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
-			driver->drawMeshBuffer(buf);
-		}
-		mesh->drop();
-		driver->setMaterial(oldmaterial);
-	}
-}
-
-void Hud::updateSelectionMesh(const v3s16 &camera_offset)
-{
-	m_camera_offset = camera_offset;
-	if (m_mode != HIGHLIGHT_HALO)
-		return;
-
-	if (m_selection_mesh) {
-		m_selection_mesh->drop();
-		m_selection_mesh = NULL;
-	}
-
-	if (m_selection_boxes.empty()) {
-		// No pointed object
-		return;
-	}
-
-	// New pointed object, create new mesh.
-
-	// Texture UV coordinates for selection boxes
-	static f32 texture_uv[24] = {
-		0,0,1,1,
-		0,0,1,1,
-		0,0,1,1,
-		0,0,1,1,
-		0,0,1,1,
-		0,0,1,1
-	};
-
-	// Use single halo box instead of multiple overlapping boxes.
-	// Temporary solution - problem can be solved with multiple
-	// rendering targets, or some method to remove inner surfaces.
-	// Thats because of halo transparency.
-
-	aabb3f halo_box(100.0, 100.0, 100.0, -100.0, -100.0, -100.0);
-	m_halo_boxes.clear();
-
-	for (const auto &selection_box : m_selection_boxes) {
-		halo_box.addInternalBox(selection_box);
-	}
-
-	m_halo_boxes.push_back(halo_box);
-	m_selection_mesh = convertNodeboxesToMesh(
-		m_halo_boxes, texture_uv, 0.5);
-}
-
-void Hud::resizeHotbar() {
-	const v2u32 &window_size = RenderingEngine::get_instance()->getWindowSize();
-
-	if (m_screensize != window_size) {
-		m_hotbar_imagesize = floor(HOTBAR_IMAGE_SIZE *
-			RenderingEngine::getDisplayDensity() + 0.5);
-		m_hotbar_imagesize *= m_hud_scaling;
-		m_padding = m_hotbar_imagesize / 12;
-		m_screensize = window_size;
-		m_displaycenter = v2s32(m_screensize.X/2,m_screensize.Y/2);
-	}
-}
+	{HUD_ELEM_IMAGE,     "image"},
+	{HUD_ELEM_TEXT,      "text"},
+	{HUD_ELEM_STATBAR,   "statbar"},
+	{HUD_ELEM_INVENTORY, "inventory"},
+	{HUD_ELEM_WAYPOINT,  "waypoint"},
+	{0, NULL},
+};
 
-struct MeshTimeInfo {
-	u64 time;
-	scene::IMesh *mesh;
+const struct EnumString es_HudElementStat[] =
+{
+	{HUD_STAT_POS,    "position"},
+	{HUD_STAT_POS,    "pos"}, /* Deprecated, only for compatibility's sake */
+	{HUD_STAT_NAME,   "name"},
+	{HUD_STAT_SCALE,  "scale"},
+	{HUD_STAT_TEXT,   "text"},
+	{HUD_STAT_NUMBER, "number"},
+	{HUD_STAT_ITEM,   "item"},
+	{HUD_STAT_DIR,    "direction"},
+	{HUD_STAT_ALIGN,  "alignment"},
+	{HUD_STAT_OFFSET, "offset"},
+	{HUD_STAT_WORLD_POS, "world_pos"},
+	{0, NULL},
 };
 
-void drawItemStack(video::IVideoDriver *driver,
-		gui::IGUIFont *font,
-		const ItemStack &item,
-		const core::rect<s32> &rect,
-		const core::rect<s32> *clip,
-		Client *client,
-		ItemRotationKind rotation_kind)
+const struct EnumString es_HudBuiltinElement[] =
 {
-	static MeshTimeInfo rotation_time_infos[IT_ROT_NONE];
-	static thread_local bool enable_animations =
-		g_settings->getBool("inventory_items_animations");
-
-	if (item.empty()) {
-		if (rotation_kind < IT_ROT_NONE) {
-			rotation_time_infos[rotation_kind].mesh = NULL;
-		}
-		return;
-	}
-
-	const ItemDefinition &def = item.getDefinition(client->idef());
-	ItemMesh *imesh = client->idef()->getWieldMesh(def.name, client);
-
-	if (imesh && imesh->mesh) {
-		scene::IMesh *mesh = imesh->mesh;
-		driver->clearZBuffer();
-		s32 delta = 0;
-		if (rotation_kind < IT_ROT_NONE) {
-			MeshTimeInfo &ti = rotation_time_infos[rotation_kind];
-			if (mesh != ti.mesh) {
-				ti.mesh = mesh;
-				ti.time = porting::getTimeMs();
-			} else {
-				delta = porting::getDeltaMs(ti.time, porting::getTimeMs()) % 100000;
-			}
-		}
-		core::rect<s32> oldViewPort = driver->getViewPort();
-		core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
-		core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
-		core::matrix4 ProjMatrix;
-		ProjMatrix.buildProjectionMatrixOrthoLH(2, 2, -1, 100);
-		driver->setTransform(video::ETS_PROJECTION, ProjMatrix);
-		driver->setTransform(video::ETS_VIEW, ProjMatrix);
-		core::matrix4 matrix;
-		matrix.makeIdentity();
-
-		if (enable_animations) {
-			float timer_f = (float) delta / 5000.0;
-			matrix.setRotationDegrees(core::vector3df(0, 360 * timer_f, 0));
-		}
-
-		driver->setTransform(video::ETS_WORLD, matrix);
-		driver->setViewPort(rect);
-
-		video::SColor basecolor =
-			client->idef()->getItemstackColor(item, client);
-
-		u32 mc = mesh->getMeshBufferCount();
-		for (u32 j = 0; j < mc; ++j) {
-			scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
-			// we can modify vertices relatively fast,
-			// because these meshes are not buffered.
-			assert(buf->getHardwareMappingHint_Vertex() == scene::EHM_NEVER);
-			video::SColor c = basecolor;
-			if (imesh->buffer_colors.size() > j) {
-				ItemPartColor *p = &imesh->buffer_colors[j];
-				if (p->override_base)
-					c = p->color;
-			}
-			if (imesh->needs_shading)
-				colorizeMeshBuffer(buf, &c);
-			else
-				setMeshBufferColor(buf, c);
-			video::SMaterial &material = buf->getMaterial();
-			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-			material.Lighting = false;
-			driver->setMaterial(material);
-			driver->drawMeshBuffer(buf);
-		}
-
-		driver->setTransform(video::ETS_VIEW, oldViewMat);
-		driver->setTransform(video::ETS_PROJECTION, oldProjMat);
-		driver->setViewPort(oldViewPort);
-	}
-
-	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;
-		core::rect<s32> progressrect(
-			rect.UpperLeftCorner.X + barpad_x,
-			rect.LowerRightCorner.Y - barpad_y - barheight,
-			rect.LowerRightCorner.X - barpad_x,
-			rect.LowerRightCorner.Y - barpad_y);
-
-		// Shrink progressrect by amount of tool damage
-		float wear = item.wear / 65535.0;
-		int progressmid =
-			wear * progressrect.UpperLeftCorner.X +
-			(1-wear) * progressrect.LowerRightCorner.X;
-
-		// Compute progressbar color
-		//   wear = 0.0: green
-		//   wear = 0.5: yellow
-		//   wear = 1.0: red
-		video::SColor color(255,255,255,255);
-		int wear_i = MYMIN(floor(wear * 600), 511);
-		wear_i = MYMIN(wear_i + 10, 511);
-		if(wear_i <= 255)
-			color.set(255, wear_i, 255, 0);
-		else
-			color.set(255, 255, 511-wear_i, 0);
-
-		core::rect<s32> progressrect2 = progressrect;
-		progressrect2.LowerRightCorner.X = progressmid;
-		driver->draw2DRectangle(color, progressrect2, clip);
-
-		color = video::SColor(255,0,0,0);
-		progressrect2 = progressrect;
-		progressrect2.UpperLeftCorner.X = progressmid;
-		driver->draw2DRectangle(color, progressrect2, clip);
-	}
-
-	if(font != NULL && item.count >= 2)
-	{
-		// Get the item count as a string
-		std::string text = itos(item.count);
-		v2u32 dim = font->getDimension(utf8_to_wide(text).c_str());
-		v2s32 sdim(dim.X,dim.Y);
-
-		core::rect<s32> rect2(
-			/*rect.UpperLeftCorner,
-			core::dimension2d<u32>(rect.getWidth(), 15)*/
-			rect.LowerRightCorner - sdim,
-			sdim
-		);
-
-		video::SColor bgcolor(128,0,0,0);
-		driver->draw2DRectangle(bgcolor, rect2, clip);
-
-		video::SColor color(255,255,255,255);
-		font->draw(text.c_str(), rect2, color, false, false, clip);
-	}
-}
+	{HUD_FLAG_HOTBAR_VISIBLE,    "hotbar"},
+	{HUD_FLAG_HEALTHBAR_VISIBLE, "healthbar"},
+	{HUD_FLAG_CROSSHAIR_VISIBLE, "crosshair"},
+	{HUD_FLAG_WIELDITEM_VISIBLE, "wielditem"},
+	{HUD_FLAG_BREATHBAR_VISIBLE, "breathbar"},
+	{HUD_FLAG_MINIMAP_VISIBLE,   "minimap"},
+	{0, NULL},
+};