feat: initialized template and wrote first gameplay code

modules/wave_survival/player_camera.cpp

@@ -0,0 +1,38 @@
+#include "player_camera.h"
+#include "macros.h"
+#include "player_input.h"
+
+void PlayerCamera::_bind_methods() {
+}
+
+void PlayerCamera::on_look_input(Vector2 input) {
+	GETSET(rotation, {
+		rotation.x = CLAMP(rotation.x + input.y, -Math::PI / 2.0, Math::PI / 2.0);
+	});
+}
+
+void PlayerCamera::update_fov() {
+	if (!Engine::get_singleton()->is_editor_hint() && is_ready()) {
+		set_fov(this->base_fov * this->fov_factor);
+	}
+}
+
+void PlayerCamera::_notification(int what) {
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+	if (what == NOTIFICATION_READY) {
+		PlayerInput *input{ cast_to<PlayerInput>(get_node(NodePath("%PlayerInput"))) };
+		input->connect(PlayerInput::sig_look_input, callable_mp(this, &self_type::on_look_input));
+		this->base_fov = get_fov();
+	}
+}
+
+void PlayerCamera::set_fov_factor(float value) {
+	this->fov_factor = value;
+	update_fov();
+}
+
+float PlayerCamera::get_fov_factor() const {
+	return this->fov_factor;
+}