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

* [CSM] Add basic HUD manipulation.

Workaround for on_connect not working right now.

1 files changed, 775 insertions, 0 deletions

diff --git a/src/client/hud.cpp b/src/client/hud.cpp
new file mode 100644
index 000000000..5137c2f3e
--- /dev/null
+++ b/src/client/hud.cpp
@@ -0,0 +1,775 @@
+/*
+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 "client/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()
+{
+	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);
+	}
+}
+
+struct MeshTimeInfo {
+	u64 time;
+	scene::IMesh *mesh;
+};
+
+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)
+{
+	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);
+	}
+}