/**
* \brief This function is called by the game when a command is pressed
* while a dialog is active.
*
* Nothing happens if the dialog is handled in Lua.
*
* \param command The command pressed.
* \return \c true if the command was handled (that is, if the dialog box
* is active and is the built-in one).
*/
bool DialogBoxSystem::notify_command_pressed(GameCommand command) {
if (!is_enabled()) {
return false;
}
if (!built_in) {
// The dialog box is handled by a Lua script.
return false;
}
if (command == GameCommand::ACTION) {
show_more_lines();
}
else if (command == GameCommand::UP || command == GameCommand::DOWN) {
if (is_question && !has_more_lines()) {
// Switch the selected answer.
selected_first_answer = !selected_first_answer;
int selected_line_index = selected_first_answer ? 1 : 2;
for (int i = 0; i < nb_visible_lines; i++) {
line_surfaces[i]->set_text_color(Color::white);
}
line_surfaces[selected_line_index]->set_text_color(Color::yellow);
}
}
return true;
}
/**
* @brief This function is called when the user presses the action key.
*/
void DialogBox::action_key_pressed() {
if (is_full()) { // the current group of 3 lines is over
show_more_lines();
}
else if (skip_mode != Dialog::SKIP_NONE) {
show_all_now();
}
}
/**
* @brief Starts a dialog.
*
* If there was already a dialog, it must be finished.
*
* @param dialog_id of the dialog
* @param issuer_script the script that issued the request to start a dialog
* (will be notified when the dialog finishes), or NULL
* @param vertical_position vertical position where to display the dialog box (default: auto)
*/
void DialogBox::start_dialog(const std::string& dialog_id, Script* issuer_script,
VerticalPosition vertical_position) {
Debug::check_assertion(!is_enabled() || is_full(), StringConcat()
<< "Cannot start dialog '" << dialog_id
<< "': another dialog '" << this->dialog_id << "' is already started");
bool first = !is_enabled();
if (first) {
// save the action and sword keys
KeysEffect& keys_effect = game.get_keys_effect();
action_key_effect_saved = keys_effect.get_action_key_effect();
sword_key_effect_saved = keys_effect.get_sword_key_effect();
this->icon_number = -1;
this->skip_mode = Dialog::SKIP_NONE;
this->char_delay = char_delays[SPEED_FAST];
this->dialog_id = dialog_id;
}
// initialize the dialog data
this->dialog = DialogResource::get_dialog(dialog_id);
this->line_it = dialog.get_lines().begin();
this->line_index = 0;
this->char_index = 0;
this->skipped = false;
if (dialog.get_skip_mode() != Dialog::SKIP_UNCHANGED) {
this->skip_mode = dialog.get_skip_mode();
}
if (dialog.get_icon() != -2) { // -2 means unchanged
this->icon_number = dialog.get_icon();
}
if (dialog.is_question()) {
this->last_answer = 0;
}
else {
this->last_answer = -1;
}
question_dst_position.set_y(box_dst_position.get_y() + 27);
if (first) {
set_vertical_position(vertical_position);
// notify the scripts
game.get_map_script().event_dialog_started(dialog_id);
this->issuer_script = issuer_script;
if (issuer_script != NULL) {
issuer_script->event_dialog_started(dialog_id);
}
}
// start displaying text
show_more_lines();
}
/**
* @brief This function is called when the user presses the sword key.
*/
void DialogBox::sword_key_pressed() {
if (skip_mode == Dialog::SKIP_ALL) {
skipped = true;
close();
}
else if (is_full()) {
show_more_lines();
}
else if (skip_mode == Dialog::SKIP_CURRENT) {
show_all_now();
}
}
/**
* @brief Stops displaying gradually the current 3 lines, shows them
* immediately.
* If the 3 lines were already finished, the next group of 3 lines starts
* (if any).
*/
void DialogBox::show_all_now() {
if (is_full()) {
show_more_lines();
}
else {
// check the end of the current line
while (!is_full()) {
while (!is_full() && char_index >= lines[line_index].size()) {
char_index = 0;
line_index++;
}
if (!is_full()) {
add_character();
}
}
}
}
/**
* \brief Opens the dialog box to show a dialog.
*
* No other dialog should be already running.
*
* \param dialog_id Id of the dialog to show.
* \param info_ref Lua ref to an optional info parameter to pass to the
* dialog box, or an empty ref.
* \param callback_ref Lua ref to a function to call when the dialog finishes,
* or an empty ref.
*/
void DialogBoxSystem::open(
const std::string& dialog_id,
const ScopedLuaRef& info_ref,
const ScopedLuaRef& callback_ref
) {
Debug::check_assertion(!is_enabled(), "A dialog is already active");
this->dialog_id = dialog_id;
this->dialog = DialogResource::get_dialog(dialog_id);
this->callback_ref = callback_ref;
// Save commands.
KeysEffect& keys_effect = game.get_keys_effect();
keys_effect.save_action_key_effect();
keys_effect.set_action_key_effect(KeysEffect::ACTION_KEY_NONE);
keys_effect.save_sword_key_effect();
keys_effect.set_sword_key_effect(KeysEffect::SWORD_KEY_NONE);
keys_effect.save_pause_key_effect();
keys_effect.set_pause_key_effect(KeysEffect::PAUSE_KEY_NONE);
// A dialog was just started: notify Lua.
LuaContext& lua_context = game.get_lua_context();
lua_State* l = lua_context.get_internal_state();
built_in = !lua_context.notify_dialog_started(
game, dialog, info_ref
);
if (built_in) {
// Show a built-in default dialog box.
keys_effect.set_action_key_effect(KeysEffect::ACTION_KEY_NEXT);
// Prepare the text.
std::string text = dialog.get_text();
this->is_question = false;
if (dialog_id == "_shop.question") {
// Built-in dialog with the "do you want to buy" question and the price.
this->is_question = true;
size_t index = text.find("$v");
if (index != std::string::npos) {
// Replace the special sequence '$v' by the price of the shop item.
info_ref.push();
int price = LuaTools::check_int(l, -1);
lua_pop(l, -1);
std::ostringstream oss;
oss << price;
text = text.replace(index, 2, oss.str());
}
}
remaining_lines.clear();
std::istringstream iss(text);
std::string line;
while (std::getline(iss, line)) {
remaining_lines.push_back(line);
}
// Determine the position.
const Rectangle& camera_position = game.get_current_map().get_camera_position();
bool top = false;
if (game.get_hero()->get_y() >= camera_position.get_y() + 130) {
top = true;
}
int x = camera_position.get_width() / 2 - 110;
int y = top ? 32 : camera_position.get_height() - 96;
text_position = { x, y };
// Start showing text.
show_more_lines();
}
}
