feat: updated player and added player input

src/game_mode.cpp

@@ -1,12 +1,16 @@
 #include "game_mode.hpp"
 #include <optional>
 #include "godot_cpp/variant/utility_functions.hpp"
+#include "godot_cpp/classes/viewport.hpp"
 #include "godot_macros.h"
 #include "level.hpp"
 #include "player.hpp"
 
 namespace godot {
-GameMode* GameMode::static_instance{nullptr};
+GameMode *GameMode::static_instance{nullptr};
+
+GameMode *GameMode::get_singleton() { return GameMode::static_instance; }
+bool GameMode::has_singleton() { return GameMode::static_instance != nullptr; }
 
 void GameMode::_bind_methods() {
 #define CLASSNAME GameMode

src/game_mode.hpp

@@ -31,6 +31,9 @@ public:
     void load_level(Ref<PackedScene>& levelScene,
                     std::optional<String> entrance);
 
+    static GameMode *get_singleton();
+    static bool has_singleton();
+
     Player* get_player_instance() const;
 
     void set_first_level(Ref<PackedScene> level);

src/player.cpp

@@ -1,8 +1,10 @@
 #include "player.hpp"
 #include <utility>
+#include "game_mode.hpp"
 #include "godot_cpp/classes/animation_tree.hpp"
 #include "godot_cpp/classes/node3d.hpp"
 #include "godot_cpp/classes/skeleton3d.hpp"
+#include "godot_cpp/variant/utility_functions.hpp"
 #include "godot_macros.h"
 
 namespace godot {
@@ -11,50 +13,64 @@ void Player::_bind_methods() {
 #ifndef NDEBUG
     GDPROPERTY(active_customization, Variant::DICTIONARY);
 #endif
+    GDFUNCTION_ARGS(on_horizontal, "event", "value");
+    GDFUNCTION_ARGS(on_vertical, "event", "value");
 }
 void Player::_enter_tree() {
     this->model = this->get_node<Node3D>("Model");
     this->animTree = this->get_node<AnimationTree>("AnimationTree");
-    this->customization_init();
+    GDGAMEONLY();
+    this->input = this->get_node<PlayerInput>("PlayerInput");
 }
 
-void Player::_exit_tree() {
-    // free the customization options that were removed from the tree
-    for(std::pair<const String, CustomizationState>& pair: this->customization) {
-        for(Node3D *option: pair.second.options) {
-            if(!option->is_inside_tree()) {
-                option->queue_free();
-            }
-        }
-    }
+void Player::_ready() {
+    this->customization_init();
+    GDGAMEONLY();
+    this->input->listen_to(PlayerInput::Listener("move_left", "move_right", this, "on_horizontal"));
+    this->input->listen_to(PlayerInput::Listener("move_forward", "move_back", this, "on_vertical"));
 }
 
 void Player::_process(double deltaTime) {}
 void Player::_physics_process(double deltaTime) {}
 
-void Player::select_customization(String category, std::optional<size_t> index) {
-    if(this->customization.find(category) == this->customization.end())
+void Player::set_customization_active(Node3D *node, bool active) {
+    node->set_visible(active);
+    node->set_process(active);
+}
+
+void Player::on_horizontal(Ref<InputEvent> event, float value) {
+    this->moveInput.x = value;
+}
+
+void Player::on_vertical(Ref<InputEvent> event, float value) {
+    this->moveInput.y = value;
+}
+
+void Player::select_customization(String category,
+                                  std::optional<size_t> index) {
+    if (this->customization.find(category) == this->customization.end())
         return;
-    CustomizationState &pair = this->customization.at(category);
+    CustomizationState& pair = this->customization.at(category);
     // invalid keys are stored as the size of the array
-    if(index.has_value() && index.value() > pair.options.size())
+    if (index.has_value() && index.value() > pair.options.size())
         index = std::nullopt;
     // nothing changes
-    if(index == pair.currentSelected)
+    if (index == pair.currentSelected)
         return;
     // disable previous chosen option, if any
-    if(pair.currentSelected.has_value())
-        customizationParent->remove_child(pair.options.at(pair.currentSelected.value()));
+    if (pair.currentSelected.has_value())
+        Player::set_customization_active(pair.options.at(pair.currentSelected.value()), false);
     // enable chosen option, if any
-    if(index.has_value())
-        customizationParent->add_child(pair.options.at(index.value()));
+    if (index.has_value())
+        Player::set_customization_active(pair.options.at(index.value()), false);
     pair.currentSelected = index;
 }
 
 Dictionary Player::get_active_customization() const {
     Dictionary result{};
     // translate the map to a dictionary of keys and indexes
-    for(std::pair<String, CustomizationState> const &pair: this->customization)
+    for (std::pair<String, CustomizationState> const& pair :
+         this->customization)
         result[pair.first] = pair.second.currentSelected.has_value()
                                  ? pair.second.currentSelected.value()
                                  : -1;  // an invalid key will always be -1
@@ -62,58 +78,66 @@ Dictionary Player::get_active_customization() const {
 }
 
 void Player::set_active_customization(Dictionary value) {
-    for(size_t i = 0; i < value.size(); ++i) {
+    for (size_t i = 0; i < value.size(); ++i) {
         String key = value.keys()[i];
         size_t selection = value[key];
-        bool exists = this->customization.find(key) != this->customization.end(); // wether or not the a given key exists in the customization map
-        // if not, it can be added, as long as the customization map has not yet been initialized by _enter_tree
-        if(!exists && !this->is_inside_tree())
+        // wether or not the a given key exists in the customization map
+        bool exists = this->customization.find(key) != this->customization.end();
+        // if not, it can be added, as long as the customization map has not yet
+        // been initialized by _ready
+        if (!exists && !this->is_inside_tree())
             this->customization.insert({key, {std::optional{selection}, {}}});
-        // if the key does not exist in customization and _enter_tree is already called, the key is not valid and discarted
-        else if(!exists)
+        // if the key does not exist in customization and _ready is already
+        // called, the key is not valid and discarted
+        else if (!exists)
             return;
         else
-            this->select_customization(key, selection >= 0 ? std::optional{selection} : std::nullopt);
+            this->select_customization(
+                key, selection >= 0 ? std::optional{selection} : std::nullopt);
     }
 }
 
 void Player::customization_init() {
-    this->customizationParent = this->get_node<Skeleton3D>("Model/RootNode/Skeleton3D");
-    if(!this->customizationParent)
+    this->customizationParent =
+        this->get_node<Skeleton3D>("Model/RootNode/GeneralSkeleton");
+    if (this->customizationParent == nullptr)
         return;
-    for(int i = 0; i < customizationParent->get_child_count(); ++i) {
+    for (int i = 0; i < customizationParent->get_child_count(); ++i) {
         // get the next valid child
-        Node3D *child = Object::cast_to<Node3D>(this->customizationParent->get_child(i));
-        if(!child) continue;
+        Node3D* child = Object::cast_to<Node3D>(this->customizationParent->get_child(i));
+        if (child == nullptr)
+            continue;
         // split it's name into parts based on _
-        // the format for the names will be Chr_<CATEGORY NAME>_<ADDITIONAL IDENTIFIERS>_<NUMBER>
-        // numbering IS NOT guaranteed to start at 0 OR 1
+        // the format for the names will be Chr_<CATEGORY NAME>_<ADDITIONAL IDENTIFIERS>_<NUMBER> numbering IS NOT guaranteed to start at 0 OR 1
         // the category name will serve as the key to the customization map
         // additional identifiers are ignored
         PackedStringArray slices = child->get_name().split("_", false);
         // create a new customization state if one does not exist for this category
-        if(this->customization.find(slices[1]) == this->customization.end())
+        if (this->customization.find(slices[1]) == this->customization.end())
             this->customization.insert({slices[1], {std::optional{0}, {}}});
         // add the new child to the customization options for this category
-        CustomizationState &state = this->customization.at(slices[1]);
+        CustomizationState& state = this->customization.at(slices[1]);
         state.options.push_back(child);
-        // only allow this child to exist in the scene tree if it was saved as the current selection
-        if(state.currentSelected != state.options.size()-1) {
-            this->customizationParent->remove_child(child);
-            --i;
+        // set invisible if this child is not the current selection
+        if (state.currentSelected != state.options.size() - 1) {
+            Player::set_customization_active(child, false);
         }
     }
     // collect customization categories that do not contain any options
     std::vector<String> empty{};
-    for(std::pair<const String, CustomizationState>& pair: this->customization) {
-        if(pair.second.options.size() == 0)
+    for (std::pair<const String, CustomizationState>& pair :
+         this->customization) {
+        if (pair.second.options.size() == 0)
             empty.push_back(pair.first);
-        if(pair.second.currentSelected.has_value() && pair.second.currentSelected.value() > pair.second.options.size())
+        if (pair.second.currentSelected.has_value() &&
+            pair.second.currentSelected.value() > pair.second.options.size())
             pair.second.currentSelected = std::nullopt;
+        UtilityFunctions::print("- ", pair.first);
     }
     // remove collected empty categories
-    for(String const& key: empty) {
+    for (String const& key : empty) {
         this->customization.erase(key);
+        UtilityFunctions::print("removing ", key);
     }
 }
 }  // namespace godot

src/player.hpp

@@ -4,7 +4,9 @@
 #include <map>
 #include "godot_cpp/classes/animation_tree.hpp"
 #include "godot_cpp/classes/character_body3d.hpp"
+#include "godot_cpp/classes/input_event.hpp"
 #include "godot_cpp/classes/skeleton3d.hpp"
+#include "player_input.hpp"
 #include <optional>
 
 namespace godot {
@@ -26,13 +28,23 @@ protected:
     AnimationTree* animTree{nullptr};
     // the skeleton of the customizable character model
     Skeleton3D *customizationParent{nullptr};
+    PlayerInput *input{nullptr};
+
+    float walkSpeed{10.f};
+
+    Vector2 moveInput{0.f, 0.f};
 
 public:
     virtual void _enter_tree() override;
-    virtual void _exit_tree() override;
+    virtual void _ready() override;
     virtual void _process(double deltaTime) override;
     virtual void _physics_process(double deltaTime) override;
 
+    static void set_customization_active(Node3D *node, bool active);
+
+    void on_horizontal(Ref<InputEvent> event, float value);
+    void on_vertical(Ref<InputEvent> event, float value);
+
     // Swap out the currently active customization for this category
     void select_customization(String category, std::optional<size_t> value);
     // Construct a dictionary of [String, int] where the key is a category

src/player_input.cpp

@@ -0,0 +1,63 @@
+#include "player_input.hpp"
+#include "godot_macros.h"
+#include "godot_cpp/classes/input.hpp"
+#include "godot_cpp/classes/input_event.hpp"
+#include <algorithm>
+
+namespace godot {
+void PlayerInput::_bind_methods() {}
+
+PlayerInput::Listener::Listener(String positive, String negative, Node *object, String method)
+: actionNegative{negative}
+, actionPositive{positive}
+, methodName{method}
+, object{object} {}
+
+bool PlayerInput::Listener::has_changed(Ref<InputEvent> const &event) {
+    return event->is_action(this->actionNegative) || event->is_action(this->actionPositive);
+}
+float PlayerInput::Listener::evaluate(Ref<InputEvent> const &event) {
+    float newest = static_cast<float>(event->is_action_pressed(this->actionPositive))
+                 - static_cast<float>(event->is_action_pressed(this->actionNegative));
+    if(lastCached != newest)
+        this->object->call(this->methodName, event, newest);
+    return (lastCached = newest);
+}
+
+bool PlayerInput::Listener::operator==(godot::PlayerInput::Listener const& b) {
+    return this->methodName == b.methodName
+        && this->object == b.object
+        && this->actionNegative == b.actionNegative
+        && this->actionPositive == b.actionPositive;
+}
+
+void PlayerInput::_unhandled_input(Ref<InputEvent> const &event) {
+    GDGAMEONLY();
+    for(Listener& listener: this->listeners) {
+        if(listener.has_changed(event)) {
+            listener.evaluate(event);
+        }
+    }
+}
+
+void PlayerInput::listen_to(Listener const& listener) {
+    this->listeners.push_back(listener);
+}
+
+void PlayerInput::stop_listening(Node *node) {
+    for(size_t i = 0; i < this->listeners.size(); ++i) {
+        Listener& l = this->listeners.at(i);
+        if(l.object == node) {
+            this->listeners.erase(this->listeners.begin() + i);
+            i--;
+        }
+    }
+}
+
+void PlayerInput::stop_listening(Listener const& listener) {
+    std::vector<Listener>::iterator itr = std::find(this->listeners.begin(), this->listeners.end(), listener);
+    if(itr != this->listeners.end())
+        this->listeners.erase(itr);
+}
+}
+

src/player_input.hpp

@@ -0,0 +1,37 @@
+#ifndef PLAYER_INPUT_HPP
+#define PLAYER_INPUT_HPP
+
+#include <vector>
+#include "godot_cpp/classes/input_event.hpp"
+#include "godot_cpp/classes/node.hpp"
+
+namespace godot {
+class PlayerInput : public Node {
+    GDCLASS(PlayerInput, Node)
+    static void _bind_methods();
+public:
+    struct Listener {
+        String actionNegative{""};
+        String actionPositive{""};
+        float lastCached{0.f};
+        String methodName{""};
+        Node *object;
+
+        Listener(String positive, String negative, Node *object, String method);
+        bool has_changed(Ref<InputEvent> const &event);
+        float evaluate(Ref<InputEvent> const &event);
+        bool operator==(godot::PlayerInput::Listener const& b);
+    };
+private:
+    std::vector<Listener> listeners;
+public:
+    virtual void _unhandled_input(Ref<InputEvent> const &event) override;
+
+    void listen_to(Listener const& listener);
+    void stop_listening(Node *node);
+    void stop_listening(Listener const& listener);
+};
+}
+
+
+#endif // !PLAYER_INPUT_HPP

src/register_types.cpp

@@ -8,6 +8,7 @@
 #include "game_mode.hpp"
 #include "level.hpp"
 #include "player.hpp"
+#include "player_input.hpp"
 
 using namespace godot;
 
@@ -19,6 +20,7 @@ void initialize_gdextension_types(ModuleInitializationLevel p_level) {
     ClassDB::register_class<Level>();
     ClassDB::register_class<Entrance>();
     ClassDB::register_class<GameMode>();
+    ClassDB::register_class<PlayerInput>();
 }
 
 extern "C" {