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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>
TouchScreenGUI *g_touchscreengui;
static const char *button_image_names[] = {
"jump_btn.png",
"down.png",
"zoom.png",
"aux1_btn.png",
"gear_icon.png",
"rare_controls.png",
"fly_btn.png",
"noclip_btn.png",
"fast_btn.png",
"debug_btn.png",
"camera_btn.png",
"rangeview_btn.png",
"minimap_btn.png",
"",
"chat_btn.png",
"inventory_btn.png",
"drop_btn.png",
"exit_btn.png",
"joystick_off.png",
"joystick_bg.png",
"joystick_center.png",
};
static void load_button_texture(IGUIImage *gui_button, const std::string &path,
const recti &button_rect, ISimpleTextureSource *tsrc, video::IVideoDriver *driver)
{
video::ITexture *texture = guiScalingImageButton(driver,
tsrc->getTexture(path), button_rect.getWidth(),
button_rect.getHeight());
gui_button->setImage(texture);
gui_button->setScaleImage(true);
}
void button_info::emitAction(bool action, video::IVideoDriver *driver,
IEventReceiver *receiver, ISimpleTextureSource *tsrc)
{
if (keycode == KEY_UNKNOWN)
return;
SEvent translated{};
translated.EventType = EET_KEY_INPUT_EVENT;
translated.KeyInput.Key = keycode;
translated.KeyInput.Control = false;
translated.KeyInput.Shift = false;
translated.KeyInput.Char = 0;
if (action) {
translated.KeyInput.PressedDown = true;
receiver->OnEvent(translated);
if (toggleable == button_info::FIRST_TEXTURE) {
toggleable = button_info::SECOND_TEXTURE;
load_button_texture(gui_button.get(), toggle_textures[1],
gui_button->getRelativePosition(),
tsrc, driver);
} else if (toggleable == button_info::SECOND_TEXTURE) {
toggleable = button_info::FIRST_TEXTURE;
load_button_texture(gui_button.get(), toggle_textures[0],
gui_button->getRelativePosition(),
tsrc, driver);
}
} else {
translated.KeyInput.PressedDown = false;
receiver->OnEvent(translated);
}
}
static bool buttons_handlePress(std::vector<button_info> &buttons, size_t pointer_id, IGUIElement *element,
video::IVideoDriver *driver, IEventReceiver *receiver, ISimpleTextureSource *tsrc)
{
if (!element)
return false;
for (button_info &btn : buttons) {
if (btn.gui_button.get() == element) {
assert(std::find(btn.pointer_ids.begin(), btn.pointer_ids.end(), pointer_id) == btn.pointer_ids.end());
btn.pointer_ids.push_back(pointer_id);
if (btn.pointer_ids.size() > 1)
return true;
btn.emitAction(true, driver, receiver, tsrc);
btn.repeat_counter = -BUTTON_REPEAT_DELAY;
return true;
}
}
return false;
}
static bool buttons_handleRelease(std::vector<button_info> &buttons, size_t pointer_id,
video::IVideoDriver *driver, IEventReceiver *receiver, ISimpleTextureSource *tsrc)
{
for (button_info &btn : buttons) {
auto it = std::find(btn.pointer_ids.begin(), btn.pointer_ids.end(), pointer_id);
if (it != btn.pointer_ids.end()) {
btn.pointer_ids.erase(it);
if (!btn.pointer_ids.empty())
return true;
btn.emitAction(false, driver, receiver, tsrc);
return true;
}
}
return false;
}
static bool buttons_step(std::vector<button_info> &buttons, float dtime,
video::IVideoDriver *driver, IEventReceiver *receiver, ISimpleTextureSource *tsrc)
{
bool has_pointers = false;
for (button_info &btn : buttons) {
if (btn.pointer_ids.empty())
continue;
has_pointers = true;
btn.repeat_counter += dtime;
if (btn.repeat_counter < BUTTON_REPEAT_INTERVAL)
continue;
btn.emitAction(false, driver, receiver, tsrc);
btn.emitAction(true, driver, receiver, tsrc);
btn.repeat_counter = 0.0f;
}
return has_pointers;
}
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 sneak_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;
}
AutoHideButtonBar::AutoHideButtonBar(IrrlichtDevice *device, ISimpleTextureSource *tsrc,
touch_gui_button_id starter_id, const std::string &starter_img,
recti starter_rect, autohide_button_bar_dir dir) :
m_driver(device->getVideoDriver()),
m_guienv(device->getGUIEnvironment()),
m_receiver(device->getEventReceiver()),
m_texturesource(tsrc)
{
m_upper_left = starter_rect.UpperLeftCorner;
m_lower_right = starter_rect.LowerRightCorner;
IGUIImage *starter_gui_button = m_guienv->addImage(starter_rect, nullptr,
starter_id);
load_button_texture(starter_gui_button, starter_img, starter_rect,
m_texturesource, m_driver);
m_starter = grab_gui_element<IGUIImage>(starter_gui_button);
m_dir = dir;
}
void AutoHideButtonBar::addButton(touch_gui_button_id id, const std::string &image)
{
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;
recti 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 = recti(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 = recti(m_upper_left.X, y_start, m_lower_right.Y, y_end);
}
IGUIImage *btn_gui_button = m_guienv->addImage(current_button, nullptr, id);
btn_gui_button->setVisible(false);
btn_gui_button->setEnabled(false);
load_button_texture(btn_gui_button, image, current_button, m_texturesource, m_driver);
button_info btn{};
btn.keycode = id_to_keycode(id);
btn.gui_button = grab_gui_element<IGUIImage>(btn_gui_button);
m_buttons.push_back(btn);
}
void AutoHideButtonBar::addToggleButton(touch_gui_button_id id,
const std::string &image_1, const std::string &image_2)
{
addButton(id, image_1);
button_info &btn = m_buttons.back();
btn.toggleable = button_info::FIRST_TEXTURE;
btn.toggle_textures[0] = image_1;
btn.toggle_textures[1] = image_2;
}
bool AutoHideButtonBar::handlePress(size_t pointer_id, IGUIElement *element)
{
if (m_active) {
return buttons_handlePress(m_buttons, pointer_id, element, m_driver,
m_receiver, m_texturesource);
}
if (m_starter.get() == element) {
activate();
return true;
}
return false;
}
bool AutoHideButtonBar::handleRelease(size_t pointer_id)
{
return buttons_handleRelease(m_buttons, pointer_id, m_driver,
m_receiver, m_texturesource);
}
void AutoHideButtonBar::step(float dtime)
{
// Since buttons can stay pressed after the buttonbar is deactivated,
// we call the step function even if the buttonbar is inactive.
bool has_pointers = buttons_step(m_buttons, dtime, m_driver, m_receiver,
m_texturesource);
if (m_active) {
if (!has_pointers) {
m_timeout += dtime;
if (m_timeout > BUTTONBAR_HIDE_DELAY)
deactivate();
} else {
m_timeout = 0.0f;
}
}
}
void AutoHideButtonBar::updateVisibility() {
bool starter_visible = m_visible && !m_active;
bool inner_visible = m_visible && m_active;
m_starter->setVisible(starter_visible);
m_starter->setEnabled(starter_visible);
for (auto &button : m_buttons) {
button.gui_button->setVisible(inner_visible);
button.gui_button->setEnabled(inner_visible);
}
}
void AutoHideButtonBar::activate()
{
m_active = true;
m_timeout = 0.0f;
updateVisibility();
}
void AutoHideButtonBar::deactivate()
{
m_active = false;
updateVisibility();
}
void AutoHideButtonBar::show()
{
m_visible = true;
updateVisibility();
}
void AutoHideButtonBar::hide()
{
m_visible = false;
updateVisibility();
}
TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, ISimpleTextureSource *tsrc):
m_device(device),
m_guienv(device->getGUIEnvironment()),
m_receiver(device->getEventReceiver()),
m_texturesource(tsrc)
{
m_touchscreen_threshold = g_settings->getU16("touchscreen_threshold");
m_long_tap_delay = g_settings->getU16("touch_long_tap_delay");
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();
m_button_size = MYMIN(m_screensize.Y / 4.5f,
RenderingEngine::getDisplayDensity() * 65.0f *
g_settings->getFloat("hud_scaling"));
// Initialize joystick display "button".
// Joystick is placed on the bottom left of screen.
if (m_fixed_joystick) {
m_joystick_btn_off = grab_gui_element<IGUIImage>(makeJoystickButton(joystick_off_id,
recti(m_button_size,
m_screensize.Y - m_button_size * 4,
m_button_size * 4,
m_screensize.Y - m_button_size), true));
} else {
m_joystick_btn_off = grab_gui_element<IGUIImage>(makeJoystickButton(joystick_off_id,
recti(m_button_size,
m_screensize.Y - m_button_size * 3,
m_button_size * 3,
m_screensize.Y - m_button_size), true));
}
m_joystick_btn_bg = grab_gui_element<IGUIImage>(makeJoystickButton(joystick_bg_id,
recti(m_button_size,
m_screensize.Y - m_button_size * 4,
m_button_size * 4,
m_screensize.Y - m_button_size), false));
m_joystick_btn_center = grab_gui_element<IGUIImage>(makeJoystickButton(joystick_center_id,
recti(0, 0, m_button_size, m_button_size), false));
// init jump button
addButton(jump_id, button_image_names[jump_id],
recti(m_screensize.X - 1.75f * m_button_size,
m_screensize.Y - m_button_size,
m_screensize.X - 0.25f * m_button_size,
m_screensize.Y));
// init sneak button
addButton(sneak_id, button_image_names[sneak_id],
recti(m_screensize.X - 3.25f * m_button_size,
m_screensize.Y - m_button_size,
m_screensize.X - 1.75f * m_button_size,
m_screensize.Y));
// init zoom button
addButton(zoom_id, button_image_names[zoom_id],
recti(m_screensize.X - 1.25f * m_button_size,
m_screensize.Y - 4 * m_button_size,
m_screensize.X - 0.25f * m_button_size,
m_screensize.Y - 3 * m_button_size));
// init aux1 button
if (!m_joystick_triggers_aux1)
addButton(aux1_id, button_image_names[aux1_id],
recti(m_screensize.X - 1.25f * m_button_size,
m_screensize.Y - 2.5f * m_button_size,
m_screensize.X - 0.25f * m_button_size,
m_screensize.Y - 1.5f * m_button_size));
AutoHideButtonBar &settings_bar = m_buttonbars.emplace_back(m_device, m_texturesource,
settings_starter_id, button_image_names[settings_starter_id],
recti(m_screensize.X - 1.25f * m_button_size,
m_screensize.Y - (SETTINGS_BAR_Y_OFFSET + 1.0f) * m_button_size
+ 0.5f * m_button_size,
m_screensize.X - 0.25f * m_button_size,
m_screensize.Y - SETTINGS_BAR_Y_OFFSET * m_button_size
+ 0.5f * m_button_size),
AHBB_Dir_Right_Left);
const static touch_gui_button_id settings_bar_buttons[] {
fly_id, noclip_id, fast_id, debug_id, camera_id, range_id, minimap_id,
};
for (auto id : settings_bar_buttons) {
if (id_to_keycode(id) == KEY_UNKNOWN)
continue;
settings_bar.addButton(id, button_image_names[id]);
}
// Chat is shown by default, so chat_hide_btn.png is shown first.
settings_bar.addToggleButton(toggle_chat_id,
"chat_hide_btn.png", "chat_show_btn.png");
AutoHideButtonBar &rare_controls_bar = m_buttonbars.emplace_back(m_device, m_texturesource,
rare_controls_starter_id, button_image_names[rare_controls_starter_id],
recti(0.25f * m_button_size,
m_screensize.Y - (RARE_CONTROLS_BAR_Y_OFFSET + 1.0f) * m_button_size
+ 0.5f * m_button_size,
0.75f * m_button_size,
m_screensize.Y - RARE_CONTROLS_BAR_Y_OFFSET * m_button_size
+ 0.5f * m_button_size),
AHBB_Dir_Left_Right);
const static touch_gui_button_id rare_controls_bar_buttons[] {
chat_id, inventory_id, drop_id, exit_id,
};
for (auto id : rare_controls_bar_buttons) {
if (id_to_keycode(id) == KEY_UNKNOWN)
continue;
rare_controls_bar.addButton(id, button_image_names[id]);
}
}
void TouchScreenGUI::addButton(touch_gui_button_id id, const std::string &image, const recti &rect)
{
IGUIImage *btn_gui_button = m_guienv->addImage(rect, nullptr, id);
load_button_texture(btn_gui_button, image, rect,
m_texturesource, m_device->getVideoDriver());
button_info &btn = m_buttons.emplace_back();
btn.keycode = id_to_keycode(id);
btn.gui_button = grab_gui_element<IGUIImage>(btn_gui_button);
}
IGUIImage *TouchScreenGUI::makeJoystickButton(touch_gui_button_id id,
const recti &button_rect, bool visible)
{
IGUIImage *btn_gui_button = m_guienv->addImage(button_rect, nullptr, id);
btn_gui_button->setVisible(visible);
load_button_texture(btn_gui_button, button_image_names[id], button_rect,
m_texturesource, m_device->getVideoDriver());
return btn_gui_button;
}
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::handleReleaseEvent(size_t pointer_id)
{
// By the way: Android reuses pointer IDs, so m_pointer_pos[pointer_id]
// will be overwritten soon anyway.
m_pointer_downpos.erase(pointer_id);
m_pointer_pos.erase(pointer_id);
// handle buttons
if (buttons_handleRelease(m_buttons, pointer_id, m_device->getVideoDriver(),
m_receiver, m_texturesource))
return;
// handle buttonbars
for (AutoHideButtonBar &bar : m_buttonbars) {
if (bar.handleRelease(pointer_id))
return;
}
if (m_has_move_id && pointer_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 && pointer_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->setVisible(true);
m_joystick_btn_bg->setVisible(false);
m_joystick_btn_center->setVisible(false);
} else {
infostream << "TouchScreenGUI::translateEvent released unknown button: "
<< pointer_id << std::endl;
}
}
void TouchScreenGUI::translateEvent(const SEvent &event)
{
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 = m_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) {
size_t pointer_id = event.TouchInput.ID;
m_pointer_downpos[pointer_id] = touch_pos;
m_pointer_pos[pointer_id] = touch_pos;
IGUIElement *element = m_guienv->getRootGUIElement()->getElementFromPoint(touch_pos);
// handle buttons
if (buttons_handlePress(m_buttons, pointer_id, element,
m_device->getVideoDriver(), m_receiver, m_texturesource)) {
for (AutoHideButtonBar &bar : m_buttonbars)
bar.deactivate();
return;
}
// handle buttonbars
for (AutoHideButtonBar &bar : m_buttonbars) {
if (bar.handlePress(pointer_id, element)) {
for (AutoHideButtonBar &other : m_buttonbars)
if (other != bar)
other.deactivate();
return;
}
}
// handle hotbar
if (isHotbarButton(event)) {
// already handled in isHotbarButton()
for (AutoHideButtonBar &bar : m_buttonbars)
bar.deactivate();
return;
}
// handle non button events
for (AutoHideButtonBar &bar : m_buttonbars) {
if (bar.isActive()) {
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 = pointer_id;
m_joystick_has_really_moved = false;
m_joystick_btn_off->setVisible(false);
m_joystick_btn_bg->setVisible(true);
m_joystick_btn_center->setVisible(true);
// If it's a fixed joystick, don't move the joystick "button".
if (!m_fixed_joystick)
m_joystick_btn_bg->setRelativePosition(
touch_pos - half_button_size * 3);
m_joystick_btn_center->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 = pointer_id;
m_move_has_really_moved = false;
m_move_downtime = porting::getTimeMs();
m_move_pos = touch_pos;
// DON'T reset m_tap_state here, otherwise many short taps
// will be ignored if you tap very fast.
m_had_move_id = true;
}
}
}
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 dir_free_original = touch_pos - m_pointer_downpos[event.TouchInput.ID];
const v2s32 free_joystick_center = m_pointer_pos[event.TouchInput.ID];
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) {
m_move_pos = touch_pos;
m_pointer_pos[event.TouchInput.ID] = touch_pos;
// update camera_yaw and camera_pitch
const double d = g_settings->getFloat("touchscreen_sensitivity", 0.001f, 10.0f)
* 6.0f / RenderingEngine::getDisplayDensity();
m_camera_yaw_change -= dir_free.X * d;
m_camera_pitch_change += dir_free.Y * d;
if (dir_free_original.getLengthSQ() > touch_threshold_sq)
m_move_has_really_moved = true;
}
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 / m_button_size;
if (m_joystick_speed > 1.0f)
m_joystick_speed = 1.0f;
}
m_joystick_status_aux1 = distance > (half_button_size * 3);
if (distance > m_button_size) {
// move joystick "button"
v2s32 new_offset = dir * m_button_size / distance - half_button_size;
if (m_fixed_joystick)
m_joystick_btn_center->setRelativePosition(
fixed_joystick_center + new_offset);
else
m_joystick_btn_center->setRelativePosition(
free_joystick_center + new_offset);
} else {
m_joystick_btn_center->setRelativePosition(
touch_pos - half_button_size);
}
}
}
}
}
void TouchScreenGUI::applyJoystickStatus()
{
if (m_joystick_triggers_aux1) {
SEvent translated{};
translated.EventType = 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);
}
}
}
void TouchScreenGUI::step(float dtime)
{
// simulate keyboard repeats
buttons_step(m_buttons, dtime, m_device->getVideoDriver(), m_receiver, m_texturesource);
for (AutoHideButtonBar &bar : m_buttonbars)
bar.step(dtime);
// 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 > m_long_tap_delay) {
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.
// Only updating when m_has_move_id means that the shootline will stay at
// it's last in-world position when the player doesn't need it.
if (!m_draw_crosshair && (m_has_move_id || m_had_move_id)) {
v2s32 pointer_pos = getPointerPos();
m_shootline = m_device
->getSceneManager()
->getSceneCollisionManager()
->getRayFromScreenCoordinates(pointer_pos);
}
m_had_move_id = false;
}
void TouchScreenGUI::resetHotbarRects()
{
m_hotbar_rects.clear();
}
void TouchScreenGUI::registerHotbarRect(u16 index, const recti &rect)
{
m_hotbar_rects[index] = rect;
}
void TouchScreenGUI::setVisible(bool visible)
{
m_visible = visible;
for (auto &button : m_buttons) {
if (button.gui_button)
button.gui_button->setVisible(visible);
}
if (m_joystick_btn_off)
m_joystick_btn_off->setVisible(visible);
// clear all active buttons
if (!visible) {
while (!m_pointer_pos.empty())
handleReleaseEvent(m_pointer_pos.begin()->first);
for (AutoHideButtonBar &bar : m_buttonbars)
bar.hide();
} else {
for (AutoHideButtonBar &bar : m_buttonbars)
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);
// We can't just use m_pointer_pos[m_move_id] because applyContextControls
// may emit release events after m_pointer_pos[m_move_id] is erased.
return m_move_pos;
}
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.
sanity_check(mode != TouchInteractionMode_USER);
u64 now = porting::getTimeMs();
bool target_dig_pressed = false;
bool target_place_pressed = false;
// 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(EMIE_RMOUSE_LEFT_UP);
m_place_pressed = false;
}
}
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