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path: root/builtin/common/information_formspecs.lua
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local COLOR_BLUE = "#7AF"
local COLOR_GREEN = "#7F7"
local COLOR_GRAY = "#BBB"

local LIST_FORMSPEC = [[
		size[13,6.5]
		label[0,-0.1;%s]
		tablecolumns[color;tree;text;text]
		table[0,0.5;12.8,5.5;list;%s;0]
		button_exit[5,6;3,1;quit;%s]
	]]

local LIST_FORMSPEC_DESCRIPTION = [[
		size[13,7.5]
		label[0,-0.1;%s]
		tablecolumns[color;tree;text;text]
		table[0,0.5;12.8,4.8;list;%s;%i]
		box[0,5.5;12.8,1.5;#000]
		textarea[0.3,5.5;13.05,1.9;;;%s]
		button_exit[5,7;3,1;quit;%s]
	]]

local F = core.formspec_escape
local S = core.get_translator("__builtin")
local check_player_privs = core.check_player_privs


-- CHAT COMMANDS FORMSPEC

local mod_cmds = {}

local function load_mod_command_tree()
	mod_cmds = {}

	for name, def in pairs(core.registered_chatcommands) do
		mod_cmds[def.mod_origin] = mod_cmds[def.mod_origin] or {}
		local cmds = mod_cmds[def.mod_origin]

		-- Could be simplified, but avoid the priv checks whenever possible
		cmds[#cmds + 1] = { name, def }
	end
	local sorted_mod_cmds = {}
	for modname, cmds in pairs(mod_cmds) do
		table.sort(cmds, function(a, b) return a[1] < b[1] end)
		sorted_mod_cmds[#sorted_mod_cmds + 1] = { modname, cmds }
	end
	table.sort(sorted_mod_cmds, function(a, b) return a[1] < b[1] end)
	mod_cmds = sorted_mod_cmds
end

core.after(0, load_mod_command_tree)

local function build_chatcommands_formspec(name, sel, copy)
	local rows = {}
	rows[1] = "#FFF,0,"..F(S("Command"))..","..F(S("Parameters"))

	local description = S("For more information, click on "
		.. "any entry in the list.").. "\n" ..
		S("Double-click to copy the entry to the chat history.")

	for i, data in ipairs(mod_cmds) do
		rows[#rows + 1] = COLOR_BLUE .. ",0," .. F(data[1]) .. ","
		for j, cmds in ipairs(data[2]) do
			local has_priv = check_player_privs(name, cmds[2].privs)
			rows[#rows + 1] = ("%s,1,%s,%s"):format(
				has_priv and COLOR_GREEN or COLOR_GRAY,
				cmds[1], F(cmds[2].params))
			if sel == #rows then
				description = cmds[2].description
				if copy then
					core.chat_send_player(name, S("Command: @1 @2",
						core.colorize("#0FF", "/" .. cmds[1]), cmds[2].params))
				end
			end
		end
	end

	return LIST_FORMSPEC_DESCRIPTION:format(
			F(S("Available commands: (see also: /help <cmd>)")),
			table.concat(rows, ","), sel or 0,
			F(description), F(S("Close"))
		)
end


-- PRIVILEGES FORMSPEC

local function build_privs_formspec(name)
	local privs = {}
	for priv_name, def in pairs(core.registered_privileges) do
		privs[#privs + 1] = { priv_name, def }
	end
	table.sort(privs, function(a, b) return a[1] < b[1] end)

	local rows = {}
	rows[1] = "#FFF,0,"..F(S("Privilege"))..","..F(S("Description"))

	local player_privs = core.get_player_privs(name)
	for i, data in ipairs(privs) do
		rows[#rows + 1] = ("%s,0,%s,%s"):format(
			player_privs[data[1]] and COLOR_GREEN or COLOR_GRAY,
				data[1], F(data[2].description))
	end

	return LIST_FORMSPEC:format(
			F(S("Available privileges:")),
			table.concat(rows, ","),
			F(S("Close"))
		)
end


-- DETAILED CHAT COMMAND INFORMATION

core.register_on_player_receive_fields(function(player, formname, fields)
	if formname ~= "__builtin:help_cmds" or fields.quit then
		return
	end

	local event = core.explode_table_event(fields.list)
	if event.type ~= "INV" then
		local name = player:get_player_name()
		core.show_formspec(name, "__builtin:help_cmds",
			build_chatcommands_formspec(name, event.row, event.type == "DCL"))
	end
end)

function core.show_general_help_formspec(name)
	core.show_formspec(name, "__builtin:help_cmds",
		build_chatcommands_formspec(name))
end

function core.show_privs_help_formspec(name)
	core.show_formspec(name, "__builtin:help_privs",
		build_privs_formspec(name))
end
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/*
Copyright (C) 2014 sapier
Copyright (C) 2018 srifqi, Muhammad Rifqi Priyo Susanto
		<muhammadrifqipriyosusanto@gmail.com>

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 "touchscreengui.h"
#include "irrlichttypes.h"
#include "irr_v2d.h"
#include "log.h"
#include "client/keycode.h"
#include "settings.h"
#include "gettime.h"
#include "util/numeric.h"
#include "porting.h"
#include "client/guiscalingfilter.h"

#include <iostream>
#include <algorithm>

#include <ISceneCollisionManager.h>

using namespace irr::core;

const char **button_imagenames = (const char *[]) {
	"jump_btn.png",
	"down.png",
	"zoom.png",
	"aux_btn.png"
};

const char **joystick_imagenames = (const char *[]) {
	"joystick_off.png",
	"joystick_bg.png",
	"joystick_center.png"
};

static irr::EKEY_CODE id2keycode(touch_gui_button_id id)
{
	std::string key = "";
	switch (id) {
		case forward_id:
			key = "forward";
			break;
		case left_id:
			key = "left";
			break;
		case right_id:
			key = "right";
			break;
		case backward_id:
			key = "backward";
			break;
		case inventory_id:
			key = "inventory";
			break;
		case drop_id:
			key = "drop";
			break;
		case jump_id:
			key = "jump";
			break;
		case crunch_id:
			key = "sneak";
			break;
		case zoom_id:
			key = "zoom";
			break;
		case special1_id:
			key = "special1";
			break;
		case fly_id:
			key = "freemove";
			break;
		case noclip_id:
			key = "noclip";
			break;
		case fast_id:
			key = "fastmove";
			break;
		case debug_id:
			key = "toggle_debug";
			break;
		case toggle_chat_id:
			key = "toggle_chat";
			break;
		case minimap_id:
			key = "minimap";
			break;
		case chat_id:
			key = "chat";
			break;
		case camera_id:
			key = "camera_mode";
			break;
		case range_id:
			key = "rangeselect";
			break;
		default:
			break;
	}
	assert(!key.empty());
	return keyname_to_keycode(g_settings->get("keymap_" + key).c_str());
}

TouchScreenGUI *g_touchscreengui;

static void load_button_texture(button_info *btn, const char *path,
		const rect<s32> &button_rect, ISimpleTextureSource *tsrc, video::IVideoDriver *driver)
{
	unsigned int tid;
	video::ITexture *texture = guiScalingImageButton(driver,
			tsrc->getTexture(path, &tid), button_rect.getWidth(),
			button_rect.getHeight());
	if (texture) {
		btn->guibutton->setUseAlphaChannel(true);
		if (g_settings->getBool("gui_scaling_filter")) {
			rect<s32> txr_rect = rect<s32>(0, 0, button_rect.getWidth(), button_rect.getHeight());
			btn->guibutton->setImage(texture, txr_rect);
			btn->guibutton->setPressedImage(texture, txr_rect);
			btn->guibutton->setScaleImage(false);
		} else {
			btn->guibutton->setImage(texture);
			btn->guibutton->setPressedImage(texture);
			btn->guibutton->setScaleImage(true);
		}
		btn->guibutton->setDrawBorder(false);
		btn->guibutton->setText(L"");
	}
}

AutoHideButtonBar::AutoHideButtonBar(IrrlichtDevice *device,
		IEventReceiver *receiver) :
			m_driver(device->getVideoDriver()),
			m_guienv(device->getGUIEnvironment()),
			m_receiver(receiver)
{
}

void AutoHideButtonBar::init(ISimpleTextureSource *tsrc,
		const char *starter_img, int button_id, const v2s32 &UpperLeft,
		const v2s32 &LowerRight, autohide_button_bar_dir dir, float timeout)
{
	m_texturesource = tsrc;

	m_upper_left = UpperLeft;
	m_lower_right = LowerRight;

	// init settings bar

	irr::core::rect<int> current_button = rect<s32>(UpperLeft.X, UpperLeft.Y,
			LowerRight.X, LowerRight.Y);

	m_starter.guibutton         = m_guienv->addButton(current_button, nullptr, button_id, L"", nullptr);
	m_starter.guibutton->grab();
	m_starter.repeatcounter     = -1;
	m_starter.keycode           = KEY_OEM_8; // use invalid keycode as it's not relevant
	m_starter.immediate_release = true;
	m_starter.ids.clear();

	load_button_texture(&m_starter, starter_img, current_button,
			m_texturesource, m_driver);

	m_dir = dir;
	m_timeout_value = timeout;

	m_initialized = true;
}

AutoHideButtonBar::~AutoHideButtonBar()
{
	if (m_starter.guibutton) {
		m_starter.guibutton->setVisible(false);
		m_starter.guibutton->drop();
	}
}

void AutoHideButtonBar::addButton(touch_gui_button_id button_id,
		const wchar_t *caption, const char *btn_image)
{

	if (!m_initialized) {
		errorstream << "AutoHideButtonBar::addButton not yet initialized!"
				<< std::endl;
		return;
	}
	int button_size = 0;

	if ((m_dir == AHBB_Dir_Top_Bottom) || (m_dir == AHBB_Dir_Bottom_Top))
		button_size = m_lower_right.X - m_upper_left.X;
	else
		button_size = m_lower_right.Y - m_upper_left.Y;

	irr::core::rect<int> current_button;

	if ((m_dir == AHBB_Dir_Right_Left) || (m_dir == AHBB_Dir_Left_Right)) {
		int x_start = 0;
		int x_end = 0;

		if (m_dir == AHBB_Dir_Left_Right) {
			x_start = m_lower_right.X + (button_size * 1.25 * m_buttons.size())
					+ (button_size * 0.25);
			x_end = x_start + button_size;
		} else {
			x_end = m_upper_left.X - (button_size * 1.25 * m_buttons.size())
					- (button_size * 0.25);
			x_start = x_end - button_size;
		}

		current_button = rect<s32>(x_start, m_upper_left.Y, x_end,
				m_lower_right.Y);
	} else {
		double y_start = 0;
		double y_end = 0;

		if (m_dir == AHBB_Dir_Top_Bottom) {
			y_start = m_lower_right.X + (button_size * 1.25 * m_buttons.size())
					+ (button_size * 0.25);
			y_end = y_start + button_size;
		} else {
			y_end = m_upper_left.X - (button_size * 1.25 * m_buttons.size())
					- (button_size * 0.25);
			y_start = y_end - button_size;
		}

		current_button = rect<s32>(m_upper_left.X, y_start,
				m_lower_right.Y, y_end);
	}

	auto *btn              = new button_info();
	btn->guibutton         = m_guienv->addButton(current_button,
					nullptr, button_id, caption, nullptr);
	btn->guibutton->grab();
	btn->guibutton->setVisible(false);
	btn->guibutton->setEnabled(false);
	btn->repeatcounter     = -1;
	btn->keycode           = id2keycode(button_id);
	btn->immediate_release = true;
	btn->ids.clear();

	load_button_texture(btn, btn_image, current_button, m_texturesource,
			m_driver);

	m_buttons.push_back(btn);
}

void AutoHideButtonBar::addToggleButton(touch_gui_button_id button_id,
		const wchar_t *caption, const char *btn_image_1,
		const char *btn_image_2)
{
	addButton(button_id, caption, btn_image_1);
	button_info *btn = m_buttons.back();
	btn->togglable = 1;
	btn->textures.push_back(btn_image_1);
	btn->textures.push_back(btn_image_2);
}

bool AutoHideButtonBar::isButton(const SEvent &event)
{
	IGUIElement *rootguielement = m_guienv->getRootGUIElement();

	if (rootguielement == nullptr)
		return false;

	gui::IGUIElement *element = rootguielement->getElementFromPoint(
			core::position2d<s32>(event.TouchInput.X, event.TouchInput.Y));

	if (element == nullptr)
		return false;

	if (m_active) {
		// check for all buttons in vector
		auto iter = m_buttons.begin();

		while (iter != m_buttons.end()) {
			if ((*iter)->guibutton == element) {

				auto *translated = new SEvent();
				memset(translated, 0, sizeof(SEvent));
				translated->EventType            = irr::EET_KEY_INPUT_EVENT;
				translated->KeyInput.Key         = (*iter)->keycode;
				translated->KeyInput.Control     = false;
				translated->KeyInput.Shift       = false;
				translated->KeyInput.Char        = 0;

				// add this event
				translated->KeyInput.PressedDown = true;
				m_receiver->OnEvent(*translated);

				// remove this event
				translated->KeyInput.PressedDown = false;
				m_receiver->OnEvent(*translated);

				delete translated;

				(*iter)->ids.push_back(event.TouchInput.ID);

				m_timeout = 0;

				if ((*iter)->togglable == 1) {
					(*iter)->togglable = 2;
					load_button_texture(*iter, (*iter)->textures[1],
							(*iter)->guibutton->getRelativePosition(),
							m_texturesource, m_driver);
				} else if ((*iter)->togglable == 2) {
					(*iter)->togglable = 1;
					load_button_texture(*iter, (*iter)->textures[0],
							(*iter)->guibutton->getRelativePosition(),
							m_texturesource, m_driver);
				}

				return true;
			}
			++iter;
		}
	} else {
		// check for starter button only
		if (element == m_starter.guibutton) {
			m_starter.ids.push_back(event.TouchInput.ID);
			m_starter.guibutton->setVisible(false);
			m_starter.guibutton->setEnabled(false);
			m_active = true;
			m_timeout = 0;

			auto iter = m_buttons.begin();

			while (iter != m_buttons.end()) {
				(*iter)->guibutton->setVisible(true);
				(*iter)->guibutton->setEnabled(true);
				++iter;
			}

			return true;
		}
	}
	return false;
}

void AutoHideButtonBar::step(float dtime)
{
	if (m_active) {
		m_timeout += dtime;

		if (m_timeout > m_timeout_value)
			deactivate();
	}
}

void AutoHideButtonBar::deactivate()
{
	if (m_visible) {
		m_starter.guibutton->setVisible(true);
		m_starter.guibutton->setEnabled(true);
	}
	m_active = false;

	auto iter = m_buttons.begin();

	while (iter != m_buttons.end()) {
		(*iter)->guibutton->setVisible(false);
		(*iter)->guibutton->setEnabled(false);
		++iter;
	}
}

void AutoHideButtonBar::hide()
{
	m_visible = false;
	m_starter.guibutton->setVisible(false);
	m_starter.guibutton->setEnabled(false);

	auto iter = m_buttons.begin();

	while (iter != m_buttons.end()) {
		(*iter)->guibutton->setVisible(false);
		(*iter)->guibutton->setEnabled(false);
		++iter;
	}
}

void AutoHideButtonBar::show()
{
	m_visible = true;

	if (m_active) {
		auto iter = m_buttons.begin();

		while (iter != m_buttons.end()) {
			(*iter)->guibutton->setVisible(true);
			(*iter)->guibutton->setEnabled(true);
			++iter;
		}
	} else {
		m_starter.guibutton->setVisible(true);
		m_starter.guibutton->setEnabled(true);
	}
}

TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, IEventReceiver *receiver):
	m_device(device),
	m_guienv(device->getGUIEnvironment()),
	m_receiver(receiver),
	m_settingsbar(device, receiver),
	m_rarecontrolsbar(device, receiver)
{
	for (auto &button : m_buttons) {
		button.guibutton     = nullptr;
		button.repeatcounter = -1;
		button.repeatdelay   = BUTTON_REPEAT_DELAY;
	}

	m_touchscreen_threshold = g_settings->getU16("touchscreen_threshold");
	m_fixed_joystick = g_settings->getBool("fixed_virtual_joystick");
	m_joystick_triggers_special1 = g_settings->getBool("virtual_joystick_triggers_aux");
	m_screensize = m_device->getVideoDriver()->getScreenSize();
	button_size = MYMIN(m_screensize.Y / 4.5f,
			porting::getDisplayDensity() *
			g_settings->getFloat("hud_scaling") * 65.0f);
}

void TouchScreenGUI::initButton(touch_gui_button_id id, const rect<s32> &button_rect,
		const std::wstring &caption, bool immediate_release, float repeat_delay)
{
	button_info *btn       = &m_buttons[id];
	btn->guibutton         = m_guienv->addButton(button_rect, nullptr, id, caption.c_str());
	btn->guibutton->grab();
	btn->repeatcounter     = -1;
	btn->repeatdelay       = repeat_delay;
	btn->keycode           = id2keycode(id);
	btn->immediate_release = immediate_release;
	btn->ids.clear();

	load_button_texture(btn, button_imagenames[id], button_rect,
			m_texturesource, m_device->getVideoDriver());
}

button_info *TouchScreenGUI::initJoystickButton(touch_gui_button_id id,
		const rect<s32> &button_rect, int texture_id, bool visible)
{
	auto *btn = new button_info();
	btn->guibutton = m_guienv->addButton(button_rect, nullptr, id, L"O");
	btn->guibutton->setVisible(visible);
	btn->guibutton->grab();
	btn->ids.clear();

	load_button_texture(btn, joystick_imagenames[texture_id],
			button_rect, m_texturesource, m_device->getVideoDriver());

	return btn;
}

void TouchScreenGUI::init(ISimpleTextureSource *tsrc)
{
	assert(tsrc);

	m_visible       = true;
	m_texturesource = tsrc;

	/* Init joystick display "button"
	 * Joystick is placed on bottom left of screen.
	 */
	if (m_fixed_joystick) {
		m_joystick_btn_off = initJoystickButton(joystick_off_id,
				rect<s32>(button_size,
						m_screensize.Y - button_size * 4,
						button_size * 4,
						m_screensize.Y - button_size), 0);
	} else {
		m_joystick_btn_off = initJoystickButton(joystick_off_id,
				rect<s32>(button_size,
						m_screensize.Y - button_size * 3,
						button_size * 3,
						m_screensize.Y - button_size), 0);
	}

	m_joystick_btn_bg = initJoystickButton(joystick_bg_id,
			rect<s32>(button_size,
					m_screensize.Y - button_size * 4,
					button_size * 4,
					m_screensize.Y - button_size),
			1, false);

	m_joystick_btn_center = initJoystickButton(joystick_center_id,
			rect<s32>(0, 0, button_size, button_size), 2, false);

	// init jump button
	initButton(jump_id,
			rect<s32>(m_screensize.X - (1.75 * button_size),
					m_screensize.Y - button_size,
					m_screensize.X - (0.25 * button_size),
					m_screensize.Y),
			L"x", false);

	// init crunch button
	initButton(crunch_id,
			rect<s32>(m_screensize.X - (3.25 * button_size),
					m_screensize.Y - button_size,
					m_screensize.X - (1.75 * button_size),
					m_screensize.Y),
			L"H", false);

	// init zoom button
	initButton(zoom_id,
			rect<s32>(m_screensize.X - (1.25 * button_size),
					m_screensize.Y - (4 * button_size),
					m_screensize.X - (0.25 * button_size),
					m_screensize.Y - (3 * button_size)),
			L"z", false);

	// init special1/aux button
	if (!m_joystick_triggers_special1)
		initButton(special1_id,
				rect<s32>(m_screensize.X - (1.25 * button_size),
						m_screensize.Y - (2.5 * button_size),
						m_screensize.X - (0.25 * button_size),
						m_screensize.Y - (1.5 * button_size)),
				L"spc1", false);

	m_settingsbar.init(m_texturesource, "gear_icon.png", settings_starter_id,
		v2s32(m_screensize.X - (1.25 * button_size),
			m_screensize.Y - ((SETTINGS_BAR_Y_OFFSET + 1.0) * button_size)
				+ (0.5 * button_size)),
		v2s32(m_screensize.X - (0.25 * button_size),
			m_screensize.Y - (SETTINGS_BAR_Y_OFFSET * button_size)
				+ (0.5 * button_size)),
		AHBB_Dir_Right_Left, 3.0);

	m_settingsbar.addButton(fly_id,     L"fly",       "fly_btn.png");
	m_settingsbar.addButton(noclip_id,  L"noclip",    "noclip_btn.png");
	m_settingsbar.addButton(fast_id,    L"fast",      "fast_btn.png");
	m_settingsbar.addButton(debug_id,   L"debug",     "debug_btn.png");
	m_settingsbar.addButton(camera_id,  L"camera",    "camera_btn.png");
	m_settingsbar.addButton(range_id,   L"rangeview", "rangeview_btn.png");
	m_settingsbar.addButton(minimap_id, L"minimap",   "minimap_btn.png");

	// Chat is shown by default, so chat_hide_btn.png is shown first.
	m_settingsbar.addToggleButton(toggle_chat_id, L"togglechat",
			"chat_hide_btn.png", "chat_show_btn.png");

	m_rarecontrolsbar.init(m_texturesource, "rare_controls.png",
		rare_controls_starter_id,
		v2s32(0.25 * button_size,
			m_screensize.Y - ((RARE_CONTROLS_BAR_Y_OFFSET + 1.0) * button_size)
				+ (0.5 * button_size)),
		v2s32(0.75 * button_size,
			m_screensize.Y - (RARE_CONTROLS_BAR_Y_OFFSET * button_size)
				+ (0.5 * button_size)),
		AHBB_Dir_Left_Right, 2.0);

	m_rarecontrolsbar.addButton(chat_id,      L"Chat", "chat_btn.png");
	m_rarecontrolsbar.addButton(inventory_id, L"inv",  "inventory_btn.png");
	m_rarecontrolsbar.addButton(drop_id,      L"drop", "drop_btn.png");
}

touch_gui_button_id TouchScreenGUI::getButtonID(s32 x, s32 y)
{
	IGUIElement *rootguielement = m_guienv->getRootGUIElement();

	if (rootguielement != nullptr) {
		gui::IGUIElement *element =
				rootguielement->getElementFromPoint(core::position2d<s32>(x, y));

		if (element)
			for (unsigned int i = 0; i < after_last_element_id; i++)
				if (element == m_buttons[i].guibutton)
					return (touch_gui_button_id) i;
	}

	return after_last_element_id;
}

touch_gui_button_id TouchScreenGUI::getButtonID(size_t eventID)
{
	for (unsigned int i = 0; i < after_last_element_id; i++) {
		button_info *btn = &m_buttons[i];

		auto id = std::find(btn->ids.begin(), btn->ids.end(), eventID);

		if (id != btn->ids.end())
			return (touch_gui_button_id) i;
	}

	return after_last_element_id;
}

bool TouchScreenGUI::isHUDButton(const SEvent &event)
{
	// check if hud item is pressed
	for (auto &hud_rect : m_hud_rects) {
		if (hud_rect.second.isPointInside(v2s32(event.TouchInput.X,
				event.TouchInput.Y))) {
			auto *translated = new SEvent();
			memset(translated, 0, sizeof(SEvent));
			translated->EventType = irr::EET_KEY_INPUT_EVENT;
			translated->KeyInput.Key         = (irr::EKEY_CODE) (KEY_KEY_1 + hud_rect.first);
			translated->KeyInput.Control     = false;
			translated->KeyInput.Shift       = false;
			translated->KeyInput.PressedDown = true;
			m_receiver->OnEvent(*translated);
			m_hud_ids[event.TouchInput.ID]   = translated->KeyInput.Key;
			delete translated;
			return true;
		}
	}
	return false;
}

void TouchScreenGUI::handleButtonEvent(touch_gui_button_id button,
		size_t eventID, bool action)
{
	button_info *btn = &m_buttons[button];
	auto *translated = new SEvent();
	memset(translated, 0, sizeof(SEvent));
	translated->EventType            = irr::EET_KEY_INPUT_EVENT;
	translated->KeyInput.Key         = btn->keycode;
	translated->KeyInput.Control     = false;
	translated->KeyInput.Shift       = false;
	translated->KeyInput.Char        = 0;

	// add this event
	if (action) {
		assert(std::find(btn->ids.begin(), btn->ids.end(), eventID) == btn->ids.end());

		btn->ids.push_back(eventID);

		if (btn->ids.size() > 1) return;

		btn->repeatcounter = 0;
		translated->KeyInput.PressedDown = true;
		translated->KeyInput.Key = btn->keycode;
		m_receiver->OnEvent(*translated);
	}

	// remove event
	if ((!action) || (btn->immediate_release)) {
		auto pos = std::find(btn->ids.begin(), btn->ids.end(), eventID);
		// has to be in touch list
		assert(pos != btn->ids.end());
		btn->ids.erase(pos);

		if (!btn->ids.empty())
			return;

		translated->KeyInput.PressedDown = false;
		btn->repeatcounter               = -1;
		m_receiver->OnEvent(*translated);
	}
	delete translated;
}

void TouchScreenGUI::handleReleaseEvent(size_t evt_id)
{
	touch_gui_button_id button = getButtonID(evt_id);


	if (button != after_last_element_id) {
		// handle button events
		handleButtonEvent(button, evt_id, false);
	} else if (evt_id == m_move_id) {
		// handle the point used for moving view
		m_move_id = -1;

		// if this pointer issued a mouse event issue symmetric release here
		if (m_move_sent_as_mouse_event) {
			auto *translated = new SEvent;
			memset(translated, 0, sizeof(SEvent));
			translated->EventType               = EET_MOUSE_INPUT_EVENT;
			translated->MouseInput.X            = m_move_downlocation.X;
			translated->MouseInput.Y            = m_move_downlocation.Y;
			translated->MouseInput.Shift        = false;
			translated->MouseInput.Control      = false;
			translated->MouseInput.ButtonStates = 0;
			translated->MouseInput.Event        = EMIE_LMOUSE_LEFT_UP;
			m_receiver->OnEvent(*translated);
			delete translated;
		} else {
			// do double tap detection
			doubleTapDetection();
		}
	}

	// handle joystick
	else if (evt_id == m_joystick_id) {
		m_joystick_id = -1;

		// reset joystick
		for (unsigned int i = 0; i < 4; i++)
			m_joystick_status[i] = false;
		applyJoystickStatus();

		m_joystick_btn_off->guibutton->setVisible(true);
		m_joystick_btn_bg->guibutton->setVisible(false);
		m_joystick_btn_center->guibutton->setVisible(false);
	} else {
		infostream
			<< "TouchScreenGUI::translateEvent released unknown button: "
			<< evt_id << std::endl;
	}

	for (auto iter = m_known_ids.begin();
			iter != m_known_ids.end(); ++iter) {
		if (iter->id == evt_id) {
			m_known_ids.erase(iter);
			break;
		}
	}
}

void TouchScreenGUI::translateEvent(const SEvent &event)
{
	if (!m_visible) {
		infostream
			<< "TouchScreenGUI::translateEvent got event but not visible!"
			<< std::endl;
		return;
	}

	if (event.EventType != EET_TOUCH_INPUT_EVENT)
		return;

	if (event.TouchInput.Event == ETIE_PRESSED_DOWN) {
		/*
		 * Add to own copy of event list...
		 * android would provide this information but Irrlicht guys don't
		 * wanna design a efficient interface
		 */
		id_status toadd{};
		toadd.id = event.TouchInput.ID;
		toadd.X  = event.TouchInput.X;
		toadd.Y  = event.TouchInput.Y;
		m_known_ids.push_back(toadd);

		size_t eventID = event.TouchInput.ID;

		touch_gui_button_id button =
				getButtonID(event.TouchInput.X, event.TouchInput.Y);

		// handle button events
		if (button != after_last_element_id) {
			handleButtonEvent(button, eventID, true);
			m_settingsbar.deactivate();
			m_rarecontrolsbar.deactivate();
		} else if (isHUDButton(event)) {
			m_settingsbar.deactivate();
			m_rarecontrolsbar.deactivate();
			// already handled in isHUDButton()
		} else if (m_settingsbar.isButton(event)) {
			m_rarecontrolsbar.deactivate();
			// already handled in isSettingsBarButton()
		} else if (m_rarecontrolsbar.isButton(event)) {
			m_settingsbar.deactivate();
			// already handled in isSettingsBarButton()
		} else {
			// handle non button events
			m_settingsbar.deactivate();
			m_rarecontrolsbar.deactivate();

			s32 dxj = event.TouchInput.X - button_size * 5.0f / 2.0f;
			s32 dyj = event.TouchInput.Y - m_screensize.Y + button_size * 5.0f / 2.0f;

			/* Select joystick when left 1/3 of screen dragged or
			 * when joystick tapped (fixed joystick position)
			 */
			if ((m_fixed_joystick && dxj * dxj + dyj * dyj <= button_size * button_size * 1.5 * 1.5) ||
					(!m_fixed_joystick && event.TouchInput.X < m_screensize.X / 3.0f)) {
				// If we don't already have a starting point for joystick make this the one.
				if (m_joystick_id == -1) {
					m_joystick_id               = event.TouchInput.ID;
					m_joystick_has_really_moved = false;

					m_joystick_btn_off->guibutton->setVisible(false);
					m_joystick_btn_bg->guibutton->setVisible(true);
					m_joystick_btn_center->guibutton->setVisible(true);

					// If it's a fixed joystick, don't move the joystick "button".
					if (!m_fixed_joystick)
						m_joystick_btn_bg->guibutton->setRelativePosition(v2s32(
								event.TouchInput.X - button_size * 3.0f / 2.0f,
								event.TouchInput.Y - button_size * 3.0f / 2.0f));

					m_joystick_btn_center->guibutton->setRelativePosition(v2s32(
							event.TouchInput.X - button_size / 2.0f,
							event.TouchInput.Y - button_size / 2.0f));
				}
			} else {
				// If we don't already have a moving point make this the moving one.
				if (m_move_id == -1) {
					m_move_id                  = event.TouchInput.ID;
					m_move_has_really_moved    = false;
					m_move_downtime            = porting::getTimeMs();
					m_move_downlocation        = v2s32(event.TouchInput.X, event.TouchInput.Y);
					m_move_sent_as_mouse_event = false;
				}
			}
		}

		m_pointerpos[event.TouchInput.ID] = v2s32(event.TouchInput.X, event.TouchInput.Y);
	}
	else if (event.TouchInput.Event == ETIE_LEFT_UP) {
		verbosestream
			<< "Up event for pointerid: " << event.TouchInput.ID << std::endl;
		handleReleaseEvent(event.TouchInput.ID);
	} else {
		assert(event.TouchInput.Event == ETIE_MOVED);

		if (m_pointerpos[event.TouchInput.ID] ==
				v2s32(event.TouchInput.X, event.TouchInput.Y))
			return;

		if (m_move_id != -1) {
			if ((event.TouchInput.ID == m_move_id) &&
				(!m_move_sent_as_mouse_event)) {

				double distance = sqrt(
						(m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) *
						(m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) +
						(m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y) *
						(m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y));

				if ((distance > m_touchscreen_threshold) ||
						(m_move_has_really_moved)) {
					m_move_has_really_moved = true;
					s32 X = event.TouchInput.X;
					s32 Y = event.TouchInput.Y;

					// update camera_yaw and camera_pitch
					s32 dx = X - m_pointerpos[event.TouchInput.ID].X;
					s32 dy = Y - m_pointerpos[event.TouchInput.ID].Y;

					// adapt to similar behaviour as pc screen
					double d = g_settings->getFloat("mouse_sensitivity") * 3.0f;