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#include "player_input.hpp"
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#include "godot_macros.h"
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#include <godot_cpp/classes/input.hpp>
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#include <godot_cpp/classes/input_event.hpp>
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#include <godot_cpp/classes/input_event_mouse_motion.hpp>
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#include <godot_cpp/variant/callable.hpp>
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#include <optional>
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namespace utils {
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void PlayerInput::_bind_methods() {
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#define CLASSNAME PlayerInput
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}
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gd::Vector2 PlayerInput::lastMouseMotion{0.f, 0.f};
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bool PlayerInput::primaryExists{false};
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PlayerInput::Listener::Listener(gd::String negative, gd::String positive, gd::Callable callable)
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: actionNegative{negative}
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, actionPositive{positive}
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, callable{callable}
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, isMouseEvent{positive.begins_with("_mouse_") || negative.begins_with("_mouse_")} {}
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PlayerInput::Listener::Listener(gd::String action, gd::Callable callable)
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: PlayerInput::Listener::Listener(gd::String(), action, callable) {}
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std::optional<float> PlayerInput::Listener::evaluate_action(gd::String const &action) {
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gd::Input *input = gd::Input::get_singleton();
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if(action.begins_with("_mouse_")) {
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gd::Vector2 vector = PlayerInput::get_last_mouse_motion();
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if(action.ends_with("_up"))
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return vector.y > 0.f ? vector.y : 0.f;
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else if(action.ends_with("_down"))
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return vector.y < 0.f ? -vector.y : 0.f;
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else if(action.ends_with("_right"))
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return vector.x > 0.f ? vector.x : 0.f;
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else if(action.ends_with("_left"))
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return vector.x < 0.f ? -vector.x : 0.f;
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}
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if(action.is_empty()) {
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return 0.f;
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} else {
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return float(input->is_action_pressed(action));
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}
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}
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bool PlayerInput::Listener::has_changed(gd::Ref<gd::InputEvent> const &event) {
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bool const mouse_changed{this->isMouseEvent && event->is_class("InputEventMouseMotion")};
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bool const negative_changed{!this->actionNegative.is_empty() && event->is_action(this->actionNegative)};
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bool const positive_changed{!this->actionPositive.is_empty() && event->is_action(this->actionPositive)};
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return mouse_changed || negative_changed || positive_changed;
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}
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float PlayerInput::Listener::evaluate(gd::Ref<gd::InputEvent> const &event) {
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std::optional<float> positive = PlayerInput::Listener::evaluate_action(this->actionPositive);
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std::optional<float> negative = PlayerInput::Listener::evaluate_action(this->actionNegative);
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if(!positive.has_value() || !negative.has_value())
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return 0.f;
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float newest = positive.value() - negative.value();
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if(this->lastCached != newest || this->isMouseEvent)
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this->callable.call(event, newest);
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return (this->lastCached = newest);
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}
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bool PlayerInput::Listener::operator==(PlayerInput::Listener const& b) const {
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return this->callable == b.callable
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&& this->actionNegative == b.actionNegative
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&& this->actionPositive == b.actionPositive;
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}
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gd::Vector2 PlayerInput::get_last_mouse_motion() {
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return PlayerInput::lastMouseMotion;
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}
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void PlayerInput::_enter_tree() { GDGAMEONLY();
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if(!PlayerInput::primaryExists) {
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this->isPrimary = true;
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PlayerInput::primaryExists = true;
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}
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}
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void PlayerInput::_exit_tree() { GDGAMEONLY();
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if(this->isPrimary) {
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this->isPrimary = false;
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PlayerInput::primaryExists = false;
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}
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}
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void PlayerInput::_unhandled_input(gd::Ref<gd::InputEvent> const &event) { GDGAMEONLY();
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if(this->isPrimary && event->is_class("InputEventMouseMotion"))
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PlayerInput::lastMouseMotion = gd::Object::cast_to<gd::InputEventMouseMotion>(*event)->get_relative();
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for(Listener& listener: this->listeners) {
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if(listener.has_changed(event)) {
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listener.evaluate(event);
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}
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}
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}
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void PlayerInput::_process(double deltaTime) {
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if(this->isPrimary)
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PlayerInput::lastMouseMotion = {0.f, 0.f};
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}
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void PlayerInput::listen_to(Listener const& listener) {
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this->listeners.push_back(listener);
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}
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void PlayerInput::listen_to(gd::String action, gd::Callable callable) {
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this->listeners.push_back(Listener(action, callable));
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}
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void PlayerInput::listen_to(gd::String negative, gd::String positive, gd::Callable callable) {
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this->listeners.push_back(Listener(negative, positive, callable));
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}
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void PlayerInput::stop_listening(Node *node) {
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for(size_t i = 0; i < this->listeners.size(); ++i) {
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Listener l = this->listeners.get(i);
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if(l.callable.get_object() == node) {
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this->listeners.remove_at(i);
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i--;
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}
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}
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}
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void PlayerInput::stop_listening(Listener const& listener) {
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this->listeners.erase(listener);
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}
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void PlayerInput::clear_listeners() {
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this->listeners.clear();
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}
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}
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