feat: added interactions, demo packs and destructables

modules/wave_survival/player_interactor.cpp

@@ -0,0 +1,87 @@
+#include "player_interactor.h"
+#include "interactable.h"
+#include "player_body.h"
+#include "player_input.h"
+
+void PlayerInteractor::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("pickup_demo_pack"), &self_type::pickup_demo_pack);
+	ClassDB::bind_method(D_METHOD("try_use_demo_pack"), &self_type::try_use_demo_pack);
+}
+
+void PlayerInteractor::highlight_removed() {
+	this->interactable->disconnect("tree_exiting", this->on_highlight_removed);
+	this->interactable->set_highlighted(this, false);
+	this->interactable = nullptr;
+}
+
+void PlayerInteractor::activate() {
+	if (interactable != nullptr) {
+		interactable->activate(this);
+	}
+}
+
+void PlayerInteractor::ready() {
+	PlayerInput *input{ cast_to<PlayerInput>(get_node(NodePath("%PlayerInput"))) };
+	input->connect(PlayerInput::sig_activate, callable_mp(this, &self_type::activate));
+}
+
+void PlayerInteractor::process(double delta) {
+	Interactable *new_interactable{ nullptr };
+	if (is_colliding()) {
+		if (Node * hit{ cast_to<Node>(this->get_collider(0)) }) {
+			TypedArray<Node> interactables = hit->find_children("*", Interactable::get_class_static());
+			new_interactable = interactables.size() > 0 ? cast_to<Interactable>(interactables[0]) : nullptr;
+		}
+	}
+	if (new_interactable != this->interactable) {
+		if (this->interactable != nullptr) {
+			this->interactable->set_highlighted(this, false);
+			this->interactable->disconnect("tree_exiting", this->on_highlight_removed);
+		}
+		this->interactable = new_interactable;
+		if (this->interactable != nullptr) {
+			this->interactable->set_highlighted(this, true);
+			this->interactable->connect("tree_exiting", this->on_highlight_removed);
+		}
+	}
+}
+
+void PlayerInteractor::_notification(int what) {
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+	switch (what) {
+		default:
+			return;
+		case NOTIFICATION_READY:
+			set_process(true);
+			ready();
+			return;
+		case NOTIFICATION_PROCESS:
+			process(get_process_delta_time());
+			return;
+	}
+}
+
+PackedStringArray PlayerInteractor::get_configuration_warnings() const {
+	PackedStringArray warnings{ super_type::get_configuration_warnings() };
+	if (cast_to<PlayerBody>(get_owner()) == nullptr) {
+		warnings.push_back("PlayerInteractor should be part of and owned by a PlayerBody node to work properly.");
+	}
+	if (get_node(NodePath("%PlayerInput")) == nullptr) {
+		warnings.push_back("PlayerInteractor should have a node named '%PlayerInput' in the same scene as it");
+	}
+	return warnings;
+}
+
+void PlayerInteractor::pickup_demo_pack() {
+	++this->num_demo_packs;
+}
+
+bool PlayerInteractor::try_use_demo_pack() {
+	if (this->num_demo_packs > 0) {
+		--this->num_demo_packs;
+		return true;
+	}
+	return false;
+}