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minetest/src/gui/touchscreengui.cpp

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/*
Copyright (C) 2014 sapier
Copyright (C) 2018 srifqi, Muhammad Rifqi Priyo Susanto
<muhammadrifqipriyosusanto@gmail.com>
Copyright (C) 2024 grorp, Gregor Parzefall
<gregor.parzefall@posteo.de>
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 "gettime.h"
#include "irr_v2d.h"
#include "log.h"
#include "porting.h"
#include "settings.h"
#include "client/guiscalingfilter.h"
#include "client/keycode.h"
#include "client/renderingengine.h"
#include "util/numeric.h"
#include <ISceneCollisionManager.h>
#include <iostream>
#include <algorithm>
using namespace irr::core;
TouchScreenGUI *g_touchscreengui;
const std::string button_image_names[] = {
"jump_btn.png",
"down.png",
"zoom.png",
"aux1_btn.png"
};
const std::string joystick_image_names[] = {
"joystick_off.png",
"joystick_bg.png",
"joystick_center.png"
};
static EKEY_CODE id_to_keycode(touch_gui_button_id id)
{
EKEY_CODE code;
// ESC isn't part of the keymap.
if (id == exit_id)
return KEY_ESCAPE;
std::string key = "";
switch (id) {
case jump_id:
key = "jump";
break;
case crunch_id:
key = "sneak";
break;
case zoom_id:
key = "zoom";
break;
case aux1_id:
key = "aux1";
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 camera_id:
key = "camera_mode";
break;
case range_id:
key = "rangeselect";
break;
case minimap_id:
key = "minimap";
break;
case toggle_chat_id:
key = "toggle_chat";
break;
case chat_id:
key = "chat";
break;
case inventory_id:
key = "inventory";
break;
case drop_id:
key = "drop";
break;
default:
break;
}
assert(!key.empty());
std::string resolved = g_settings->get("keymap_" + key);
try {
code = keyname_to_keycode(resolved.c_str());
} catch (UnknownKeycode &e) {
code = KEY_UNKNOWN;
warningstream << "TouchScreenGUI: Unknown key '" << resolved
<< "' for '" << key << "', hiding button." << std::endl;
}
return code;
}
static void load_button_texture(const button_info *btn, const std::string &path,
const rect<s32> &button_rect, ISimpleTextureSource *tsrc, video::IVideoDriver *driver)
{
u32 tid;
video::ITexture *texture = guiScalingImageButton(driver,
tsrc->getTexture(path, &tid), button_rect.getWidth(),
button_rect.getHeight());
if (texture) {
btn->gui_button->setUseAlphaChannel(true);
if (g_settings->getBool("gui_scaling_filter")) {
rect<s32> txr_rect = rect<s32>(0, 0, button_rect.getWidth(), button_rect.getHeight());
btn->gui_button->setImage(texture, txr_rect);
btn->gui_button->setPressedImage(texture, txr_rect);
btn->gui_button->setScaleImage(false);
} else {
btn->gui_button->setImage(texture);
btn->gui_button->setPressedImage(texture);
btn->gui_button->setScaleImage(true);
}
btn->gui_button->setDrawBorder(false);
btn->gui_button->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 std::string &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;
rect<int> starter_rect = rect<s32>(UpperLeft.X, UpperLeft.Y, LowerRight.X, LowerRight.Y);
IGUIButton *starter_gui_button = m_guienv->addButton(starter_rect, nullptr,
button_id, L"", nullptr);
m_starter.gui_button = starter_gui_button;
m_starter.gui_button->grab();
m_starter.repeat_counter = -1.0f;
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, starter_rect,
m_texturesource, m_driver);
m_dir = dir;
m_timeout_value = timeout;
m_initialized = true;
}
AutoHideButtonBar::~AutoHideButtonBar()
{
if (m_starter.gui_button) {
m_starter.gui_button->setVisible(false);
m_starter.gui_button->drop();
m_starter.gui_button = nullptr;
}
for (auto &button : m_buttons) {
if (button->gui_button) {
button->gui_button->drop();
button->gui_button = nullptr;
}
}
}
void AutoHideButtonBar::addButton(touch_gui_button_id button_id, const wchar_t *caption,
const std::string &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 * 1.25f * m_buttons.size()
+ button_size * 0.25f;
x_end = x_start + button_size;
} else {
x_end = m_upper_left.X - button_size * 1.25f * m_buttons.size()
- button_size * 0.25f;
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 * 1.25f * m_buttons.size()
+ button_size * 0.25f;
y_end = y_start + button_size;
} else {
y_end = m_upper_left.X - button_size * 1.25f * m_buttons.size()
- button_size * 0.25f;
y_start = y_end - button_size;
}
current_button = rect<s32>(m_upper_left.X, y_start, m_lower_right.Y, y_end);
}
IGUIButton *btn_gui_button = m_guienv->addButton(current_button, nullptr, button_id,
caption, nullptr);
std::shared_ptr<button_info> btn(new button_info);
btn->gui_button = btn_gui_button;
btn->gui_button->grab();
btn->gui_button->setVisible(false);
btn->gui_button->setEnabled(false);
btn->repeat_counter = -1.0f;
btn->keycode = id_to_keycode(button_id);
btn->immediate_release = true;
btn->ids.clear();
load_button_texture(btn.get(), 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 std::string &btn_image_1, const std::string &btn_image_2)
{
addButton(button_id, caption, btn_image_1);
std::shared_ptr<button_info> btn = m_buttons.back();
btn->toggleable = button_info::FIRST_TEXTURE;
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(
v2s32(event.TouchInput.X, event.TouchInput.Y));
if (element == nullptr)
return false;
if (m_active) {
// check for all buttons in vector
for (const auto &button : m_buttons) {
if (button->gui_button == element) {
SEvent translated{};
translated.EventType = irr::EET_KEY_INPUT_EVENT;
translated.KeyInput.Key = button->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);
button->ids.push_back(event.TouchInput.ID);
m_timeout = 0.0f;
if (button->toggleable == button_info::FIRST_TEXTURE) {
button->toggleable = button_info::SECOND_TEXTURE;
load_button_texture(button.get(), button->textures[1],
button->gui_button->getRelativePosition(),
m_texturesource, m_driver);
} else if (button->toggleable == button_info::SECOND_TEXTURE) {
button->toggleable = button_info::FIRST_TEXTURE;
load_button_texture(button.get(), button->textures[0],
button->gui_button->getRelativePosition(),
m_texturesource, m_driver);
}
return true;
}
}
} else {
// check for starter button only
if (element == m_starter.gui_button) {
m_starter.ids.push_back(event.TouchInput.ID);
m_starter.gui_button->setVisible(false);
m_starter.gui_button->setEnabled(false);
m_active = true;
m_timeout = 0.0f;
for (const auto &button : m_buttons) {
button->gui_button->setVisible(true);
button->gui_button->setEnabled(true);
}
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.gui_button->setVisible(true);
m_starter.gui_button->setEnabled(true);
}
m_active = false;
for (const auto &button : m_buttons) {
button->gui_button->setVisible(false);
button->gui_button->setEnabled(false);
}
}
void AutoHideButtonBar::hide()
{
m_visible = false;
m_starter.gui_button->setVisible(false);
m_starter.gui_button->setEnabled(false);
for (const auto &button : m_buttons) {
button->gui_button->setVisible(false);
button->gui_button->setEnabled(false);
}
}
void AutoHideButtonBar::show()
{
m_visible = true;
if (m_active) {
for (const auto &button : m_buttons) {
button->gui_button->setVisible(true);
button->gui_button->setEnabled(true);
}
} else {
m_starter.gui_button->setVisible(true);
m_starter.gui_button->setEnabled(true);
}
}
TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, IEventReceiver *receiver):
m_device(device),
m_guienv(device->getGUIEnvironment()),
m_receiver(receiver),
m_settings_bar(device, receiver),
m_rare_controls_bar(device, receiver)
{
for (auto &button : m_buttons) {
button.gui_button = nullptr;
button.repeat_counter = -1.0f;
button.repeat_delay = BUTTON_REPEAT_DELAY;
}
m_touchscreen_threshold = g_settings->getU16("touchscreen_threshold");
m_fixed_joystick = g_settings->getBool("fixed_virtual_joystick");
m_joystick_triggers_aux1 = g_settings->getBool("virtual_joystick_triggers_aux1");
m_screensize = m_device->getVideoDriver()->getScreenSize();
button_size = MYMIN(m_screensize.Y / 4.5f,
RenderingEngine::getDisplayDensity() * 65.0f *
g_settings->getFloat("hud_scaling"));
}
void TouchScreenGUI::initButton(touch_gui_button_id id, const rect<s32> &button_rect,
const std::wstring &caption, bool immediate_release, float repeat_delay)
{
IGUIButton *btn_gui_button = m_guienv->addButton(button_rect, nullptr, id, caption.c_str());
button_info *btn = &m_buttons[id];
btn->gui_button = btn_gui_button;
btn->gui_button->grab();
btn->repeat_counter = -1.0f;
btn->repeat_delay = repeat_delay;
btn->keycode = id_to_keycode(id);
btn->immediate_release = immediate_release;
btn->ids.clear();
load_button_texture(btn, button_image_names[id], button_rect,
m_texturesource, m_device->getVideoDriver());
}
std::shared_ptr<button_info> TouchScreenGUI::initJoystickButton(touch_gui_button_id id,
const rect<s32> &button_rect, int texture_id, bool visible)
{
IGUIButton *btn_gui_button = m_guienv->addButton(button_rect, nullptr, id, L"O");
std::shared_ptr<button_info> btn(new button_info);
btn->gui_button = btn_gui_button;
btn->gui_button->setVisible(visible);
btn->gui_button->grab();
btn->ids.clear();
load_button_texture(btn.get(), joystick_image_names[texture_id], button_rect,
m_texturesource, m_device->getVideoDriver());
return btn;
}
void TouchScreenGUI::init(ISimpleTextureSource *tsrc)
{
assert(tsrc);
m_visible = true;
m_texturesource = tsrc;
// Initialize joystick display "button".
// Joystick is placed on the 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 - 1.75f * button_size,
m_screensize.Y - button_size,
m_screensize.X - 0.25f * button_size,
m_screensize.Y),
L"x", false);
// init crunch button
initButton(crunch_id,
rect<s32>(m_screensize.X - 3.25f * button_size,
m_screensize.Y - button_size,
m_screensize.X - 1.75f * button_size,
m_screensize.Y),
L"H", false);
// init zoom button
initButton(zoom_id,
rect<s32>(m_screensize.X - 1.25f * button_size,
m_screensize.Y - 4 * button_size,
m_screensize.X - 0.25f * button_size,
m_screensize.Y - 3 * button_size),
L"z", false);
// init aux1 button
if (!m_joystick_triggers_aux1)
initButton(aux1_id,
rect<s32>(m_screensize.X - 1.25f * button_size,
m_screensize.Y - 2.5f * button_size,
m_screensize.X - 0.25f * button_size,
m_screensize.Y - 1.5f * button_size),
L"spc1", false);
m_settings_bar.init(m_texturesource, "gear_icon.png", settings_starter_id,
v2s32(m_screensize.X - 1.25f * button_size,
m_screensize.Y - (SETTINGS_BAR_Y_OFFSET + 1.0f) * button_size
+ 0.5f * button_size),
v2s32(m_screensize.X - 0.25f * button_size,
m_screensize.Y - SETTINGS_BAR_Y_OFFSET * button_size
+ 0.5f * button_size),
AHBB_Dir_Right_Left, 3.0f);
const static std::map<touch_gui_button_id, std::string> settings_bar_buttons {
{fly_id, "fly"},
{noclip_id, "noclip"},
{fast_id, "fast"},
{debug_id, "debug"},
{camera_id, "camera"},
{range_id, "rangeview"},
{minimap_id, "minimap"},
};
for (const auto &pair : settings_bar_buttons) {
if (id_to_keycode(pair.first) == KEY_UNKNOWN)
continue;
std::wstring wide = utf8_to_wide(pair.second);
m_settings_bar.addButton(pair.first, wide.c_str(),
pair.second + "_btn.png");
}
// Chat is shown by default, so chat_hide_btn.png is shown first.
m_settings_bar.addToggleButton(toggle_chat_id, L"togglechat",
"chat_hide_btn.png", "chat_show_btn.png");
m_rare_controls_bar.init(m_texturesource, "rare_controls.png",
rare_controls_starter_id,
v2s32(0.25f * button_size,
m_screensize.Y - (RARE_CONTROLS_BAR_Y_OFFSET + 1.0f) * button_size
+ 0.5f * button_size),
v2s32(0.75f * button_size,
m_screensize.Y - RARE_CONTROLS_BAR_Y_OFFSET * button_size
+ 0.5f * button_size),
AHBB_Dir_Left_Right, 2.0f);
const static std::map<touch_gui_button_id, std::string> rare_controls_bar_buttons {
{chat_id, "chat"},
{inventory_id, "inventory"},
{drop_id, "drop"},
{exit_id, "exit"},
};
for (const auto &pair : rare_controls_bar_buttons) {
if (id_to_keycode(pair.first) == KEY_UNKNOWN)
continue;
std::wstring wide = utf8_to_wide(pair.second);
m_rare_controls_bar.addButton(pair.first, wide.c_str(),
pair.second + "_btn.png");
}
m_initialized = true;
}
touch_gui_button_id TouchScreenGUI::getButtonID(s32 x, s32 y)
{
IGUIElement *rootguielement = m_guienv->getRootGUIElement();
if (rootguielement != nullptr) {
gui::IGUIElement *element =
rootguielement->getElementFromPoint(v2s32(x, y));
if (element)
for (unsigned int i = 0; i < after_last_element_id; i++)
if (element == m_buttons[i].gui_button)
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::isHotbarButton(const SEvent &event)
{
const v2s32 touch_pos = v2s32(event.TouchInput.X, event.TouchInput.Y);
// check if hotbar item is pressed
for (auto &[index, rect] : m_hotbar_rects) {
if (rect.isPointInside(touch_pos)) {
// We can't just emit a keypress event because the number keys
// range from 1 to 9, but there may be more hotbar items.
m_hotbar_selection = index;
return true;
}
}
return false;
}
std::optional<u16> TouchScreenGUI::getHotbarSelection()
{
auto selection = m_hotbar_selection;
m_hotbar_selection = std::nullopt;
return selection;
}
void TouchScreenGUI::handleButtonEvent(touch_gui_button_id button,
size_t eventID, bool action)
{
button_info *btn = &m_buttons[button];
SEvent translated{};
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->repeat_counter = 0.0f;
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->repeat_counter = -1.0f;
m_receiver->OnEvent(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 (m_has_move_id && evt_id == m_move_id) {
// handle the point used for moving view
m_has_move_id = false;
// If m_tap_state is already set to TapState::ShortTap, we must keep
// that value. Otherwise, many short taps will be ignored if you tap
// very fast.
if (!m_move_has_really_moved && m_tap_state != TapState::LongTap) {
m_tap_state = TapState::ShortTap;
} else {
m_tap_state = TapState::None;
}
}
// handle joystick
else if (m_has_joystick_id && evt_id == m_joystick_id) {
m_has_joystick_id = false;
// reset joystick
m_joystick_direction = 0.0f;
m_joystick_speed = 0.0f;
m_joystick_status_aux1 = false;
applyJoystickStatus();
m_joystick_btn_off->gui_button->setVisible(true);
m_joystick_btn_bg->gui_button->setVisible(false);
m_joystick_btn_center->gui_button->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_initialized)
return;
if (!m_visible) {
infostream << "TouchScreenGUI::translateEvent got event but is not visible!"
<< std::endl;
return;
}
if (event.EventType != EET_TOUCH_INPUT_EVENT)
return;
const s32 half_button_size = button_size / 2.0f;
const s32 fixed_joystick_range_sq = half_button_size * half_button_size * 3 * 3;
const s32 X = event.TouchInput.X;
const s32 Y = event.TouchInput.Y;
const v2s32 touch_pos = v2s32(X, Y);
const v2s32 fixed_joystick_center = v2s32(half_button_size * 5,
m_screensize.Y - half_button_size * 5);
const v2s32 dir_fixed = touch_pos - fixed_joystick_center;
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 an efficient interface
*/
id_status to_be_added{};
to_be_added.id = event.TouchInput.ID;
to_be_added.X = event.TouchInput.X;
to_be_added.Y = event.TouchInput.Y;
m_known_ids.push_back(to_be_added);
size_t eventID = event.TouchInput.ID;
touch_gui_button_id button = getButtonID(X, Y);
// handle button events
if (button != after_last_element_id) {
handleButtonEvent(button, eventID, true);
m_settings_bar.deactivate();
m_rare_controls_bar.deactivate();
} else if (isHotbarButton(event)) {
m_settings_bar.deactivate();
m_rare_controls_bar.deactivate();
// already handled in isHotbarButton()
} else if (m_settings_bar.isButton(event)) {
m_rare_controls_bar.deactivate();
// already handled in isSettingsBarButton()
} else if (m_rare_controls_bar.isButton(event)) {
m_settings_bar.deactivate();
// already handled in isSettingsBarButton()
} else {
// handle non button events
if (m_settings_bar.active() || m_rare_controls_bar.active()) {
m_settings_bar.deactivate();
m_rare_controls_bar.deactivate();
return;
}
// Select joystick when joystick tapped (fixed joystick position) or
// when left 1/3 of screen dragged (free joystick position)
if ((m_fixed_joystick && dir_fixed.getLengthSQ() <= fixed_joystick_range_sq) ||
(!m_fixed_joystick && X < m_screensize.X / 3.0f)) {
// If we don't already have a starting point for joystick, make this the one.
if (!m_has_joystick_id) {
m_has_joystick_id = true;
m_joystick_id = event.TouchInput.ID;
m_joystick_has_really_moved = false;
m_joystick_btn_off->gui_button->setVisible(false);
m_joystick_btn_bg->gui_button->setVisible(true);
m_joystick_btn_center->gui_button->setVisible(true);
// If it's a fixed joystick, don't move the joystick "button".
if (!m_fixed_joystick)
m_joystick_btn_bg->gui_button->setRelativePosition(
touch_pos - half_button_size * 3);
m_joystick_btn_center->gui_button->setRelativePosition(
touch_pos - half_button_size);
}
} else {
// If we don't already have a moving point, make this the moving one.
if (!m_has_move_id) {
m_has_move_id = true;
m_move_id = event.TouchInput.ID;
m_move_has_really_moved = false;
m_move_downtime = porting::getTimeMs();
// DON'T reset m_tap_state here, otherwise many short taps
// will be ignored if you tap very fast.
}
}
}
m_pointer_pos[event.TouchInput.ID] = touch_pos;
}
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_has_joystick_id && m_fixed_joystick) &&
m_pointer_pos[event.TouchInput.ID] == touch_pos)
return;
const v2s32 free_joystick_center = v2s32(m_pointer_pos[event.TouchInput.ID].X,
m_pointer_pos[event.TouchInput.ID].Y);
const v2s32 dir_free = touch_pos - free_joystick_center;
const double touch_threshold_sq = m_touchscreen_threshold * m_touchscreen_threshold;
if (m_has_move_id && event.TouchInput.ID == m_move_id) {
if (dir_free.getLengthSQ() > touch_threshold_sq || m_move_has_really_moved) {
m_move_has_really_moved = true;
m_pointer_pos[event.TouchInput.ID] = touch_pos;
if (m_tap_state == TapState::None || m_draw_crosshair) {
// adapt to similar behavior as pc screen
const double d = g_settings->getFloat("touchscreen_sensitivity", 0.001f, 10.0f) * 3.0f;
// update camera_yaw and camera_pitch
m_camera_yaw_change -= dir_free.X * d;
m_camera_pitch_change += dir_free.Y * d;
}
}
}
if (m_has_joystick_id && event.TouchInput.ID == m_joystick_id) {
v2s32 dir = dir_free;
if (m_fixed_joystick)
dir = dir_fixed;
const bool inside_joystick = dir_fixed.getLengthSQ() <= fixed_joystick_range_sq;
const double distance_sq = dir.getLengthSQ();
if (m_joystick_has_really_moved || inside_joystick ||
(!m_fixed_joystick && distance_sq > touch_threshold_sq)) {
m_joystick_has_really_moved = true;
m_joystick_direction = atan2(dir.X, -dir.Y);
const double distance = sqrt(distance_sq);
if (distance <= m_touchscreen_threshold) {
m_joystick_speed = 0.0f;
} else {
m_joystick_speed = distance / button_size;
if (m_joystick_speed > 1.0f)
m_joystick_speed = 1.0f;
}
m_joystick_status_aux1 = distance > (half_button_size * 3);
if (distance > button_size) {
// move joystick "button"
v2s32 new_offset = dir * button_size / distance - half_button_size;
if (m_fixed_joystick)
m_joystick_btn_center->gui_button->setRelativePosition(
fixed_joystick_center + new_offset);
else
m_joystick_btn_center->gui_button->setRelativePosition(
free_joystick_center + new_offset);
} else {
m_joystick_btn_center->gui_button->setRelativePosition(
touch_pos - half_button_size);
}
}
}
if (!m_has_move_id && !m_has_joystick_id)
handleChangedButton(event);
}
}
void TouchScreenGUI::handleChangedButton(const SEvent &event)
{
for (unsigned int i = 0; i < after_last_element_id; i++) {
if (m_buttons[i].ids.empty())
continue;
for (auto iter = m_buttons[i].ids.begin(); iter != m_buttons[i].ids.end(); ++iter) {
if (event.TouchInput.ID == *iter) {
auto current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y);
if (current_button_id == i)
continue;
// remove old button
handleButtonEvent((touch_gui_button_id) i, *iter, false);
if (current_button_id == after_last_element_id)
return;
handleButtonEvent((touch_gui_button_id) current_button_id, *iter, true);
return;
}
}
}
int current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y);
if (current_button_id == after_last_element_id)
return;
button_info *btn = &m_buttons[current_button_id];
if (std::find(btn->ids.begin(), btn->ids.end(), event.TouchInput.ID) == btn->ids.end())
handleButtonEvent((touch_gui_button_id) current_button_id, event.TouchInput.ID, true);
}
void TouchScreenGUI::applyJoystickStatus()
{
if (m_joystick_triggers_aux1) {
SEvent translated{};
translated.EventType = irr::EET_KEY_INPUT_EVENT;
translated.KeyInput.Key = id_to_keycode(aux1_id);
translated.KeyInput.PressedDown = false;
m_receiver->OnEvent(translated);
if (m_joystick_status_aux1) {
translated.KeyInput.PressedDown = true;
m_receiver->OnEvent(translated);
}
}
}
TouchScreenGUI::~TouchScreenGUI()
{
if (!m_initialized)
return;
for (auto &button : m_buttons) {
if (button.gui_button) {
button.gui_button->drop();
button.gui_button = nullptr;
}
}
if (m_joystick_btn_off->gui_button) {
m_joystick_btn_off->gui_button->drop();
m_joystick_btn_off->gui_button = nullptr;
}
if (m_joystick_btn_bg->gui_button) {
m_joystick_btn_bg->gui_button->drop();
m_joystick_btn_bg->gui_button = nullptr;
}
if (m_joystick_btn_center->gui_button) {
m_joystick_btn_center->gui_button->drop();
m_joystick_btn_center->gui_button = nullptr;
}
}
void TouchScreenGUI::step(float dtime)
{
if (!m_initialized)
return;
// simulate keyboard repeats
for (auto &button : m_buttons) {
if (!button.ids.empty()) {
button.repeat_counter += dtime;
if (button.repeat_counter < button.repeat_delay)
continue;
button.repeat_counter = 0.0f;
SEvent translated {};
translated.EventType = irr::EET_KEY_INPUT_EVENT;
translated.KeyInput.Key = button.keycode;
translated.KeyInput.PressedDown = false;
m_receiver->OnEvent(translated);
translated.KeyInput.PressedDown = true;
m_receiver->OnEvent(translated);
}
}
// joystick
applyJoystickStatus();
// if a new placed pointer isn't moved for some time start digging
if (m_has_move_id && !m_move_has_really_moved && m_tap_state == TapState::None) {
u64 delta = porting::getDeltaMs(m_move_downtime, porting::getTimeMs());
if (delta > MIN_DIG_TIME_MS) {
m_tap_state = TapState::LongTap;
}
}
// Update the shootline.
// Since not only the pointer position, but also the player position and
// thus the camera position can change, it doesn't suffice to update the
// shootline when a touch event occurs.
// Note that the shootline isn't used if touch_use_crosshair is enabled.
if (!m_draw_crosshair) {
v2s32 pointer_pos = getPointerPos();
m_shootline = m_device
->getSceneManager()
->getSceneCollisionManager()
->getRayFromScreenCoordinates(pointer_pos);
}
m_settings_bar.step(dtime);
m_rare_controls_bar.step(dtime);
}
void TouchScreenGUI::resetHotbarRects()
{
m_hotbar_rects.clear();
}
void TouchScreenGUI::registerHotbarRect(u16 index, const rect<s32> &rect)
{
m_hotbar_rects[index] = rect;
}
void TouchScreenGUI::setVisible(bool visible)
{
if (!m_initialized)
return;
m_visible = visible;
for (auto &button : m_buttons) {
if (button.gui_button)
button.gui_button->setVisible(visible);
}
if (m_joystick_btn_off->gui_button)
m_joystick_btn_off->gui_button->setVisible(visible);
// clear all active buttons
if (!visible) {
while (!m_known_ids.empty())
handleReleaseEvent(m_known_ids.begin()->id);
m_settings_bar.hide();
m_rare_controls_bar.hide();
} else {
m_settings_bar.show();
m_rare_controls_bar.show();
}
}
void TouchScreenGUI::hide()
{
if (!m_visible)
return;
setVisible(false);
}
void TouchScreenGUI::show()
{
if (m_visible)
return;
setVisible(true);
}
v2s32 TouchScreenGUI::getPointerPos()
{
if (m_draw_crosshair)
return v2s32(m_screensize.X / 2, m_screensize.Y / 2);
return m_pointer_pos[m_move_id];
}
void TouchScreenGUI::emitMouseEvent(EMOUSE_INPUT_EVENT type)
{
v2s32 pointer_pos = getPointerPos();
SEvent event{};
event.EventType = EET_MOUSE_INPUT_EVENT;
event.MouseInput.X = pointer_pos.X;
event.MouseInput.Y = pointer_pos.Y;
event.MouseInput.Shift = false;
event.MouseInput.Control = false;
event.MouseInput.ButtonStates = 0;
event.MouseInput.Event = type;
m_receiver->OnEvent(event);
}
void TouchScreenGUI::applyContextControls(const TouchInteractionMode &mode)
{
// Since the pointed thing has already been determined when this function
// is called, we cannot use this function to update the shootline.
bool target_dig_pressed = false;
bool target_place_pressed = false;
u64 now = porting::getTimeMs();
// If the meanings of short and long taps have been swapped, abort any ongoing
// short taps because they would do something else than the player expected.
// Long taps don't need this, they're adjusted to the swapped meanings instead.
if (mode != m_last_mode) {
m_dig_pressed_until = 0;
m_place_pressed_until = 0;
}
m_last_mode = mode;
switch (m_tap_state) {
case TapState::ShortTap:
if (mode == SHORT_DIG_LONG_PLACE) {
if (!m_dig_pressed) {
// The button isn't currently pressed, we can press it.
m_dig_pressed_until = now + SIMULATED_CLICK_DURATION_MS;
// We're done with this short tap.
m_tap_state = TapState::None;
} else {
// The button is already pressed, perhaps due to another short tap.
// Release it now, press it again during the next client step.
// We can't release and press during the same client step because
// the digging code simply ignores that.
m_dig_pressed_until = 0;
}
} else {
if (!m_place_pressed) {
// The button isn't currently pressed, we can press it.
m_place_pressed_until = now + SIMULATED_CLICK_DURATION_MS;
// We're done with this short tap.
m_tap_state = TapState::None;
} else {
// The button is already pressed, perhaps due to another short tap.
// Release it now, press it again during the next client step.
// We can't release and press during the same client step because
// the digging code simply ignores that.
m_place_pressed_until = 0;
}
}
break;
case TapState::LongTap:
if (mode == SHORT_DIG_LONG_PLACE)
target_place_pressed = true;
else
target_dig_pressed = true;
break;
case TapState::None:
break;
}
// Apply short taps.
target_dig_pressed |= now < m_dig_pressed_until;
target_place_pressed |= now < m_place_pressed_until;
if (target_dig_pressed && !m_dig_pressed) {
emitMouseEvent(EMIE_LMOUSE_PRESSED_DOWN);
m_dig_pressed = true;
} else if (!target_dig_pressed && m_dig_pressed) {
emitMouseEvent(EMIE_LMOUSE_LEFT_UP);
m_dig_pressed = false;
}
if (target_place_pressed && !m_place_pressed) {
emitMouseEvent(EMIE_RMOUSE_PRESSED_DOWN);
m_place_pressed = true;
} else if (!target_place_pressed && m_place_pressed) {
emitMouseEvent(irr::EMIE_RMOUSE_LEFT_UP);
m_place_pressed = false;
}
}
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