Updated README.md with C++ instructions

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "evolve-die-repeat/thirdparty/godot-cpp"]
+	path = evolve-die-repeat/thirdparty/godot-cpp
+	url = https://github.com/godotengine/godot-cpp.git
+	branch = 4.5

README.md

@@ -1,2 +1,25 @@
-# notSpore
+# Evolve Die Repeat TODO: The name is a work in progress
+
+This is currently quite empty.
+
+## C++ setup
+From anywhere in proejct:
+```bash
+git submodule update --init --recursive
+```
+
+In `thirdparty`:
+```bash
+godot --headless --dump-extension-api
+```
+
+To compile the cpp extension, run this from `thirdparty/godot-cpp`:
+```bash
+scons platform=linux target=template_debug generate_bindings=yes custom_api_file=../extension_api.json -j8
+```
+
+Finally, to compile and extern local `.cpp` files, run this from `thirdparty`:
+```bash
+scons platform=linux target=template_debug -j8
+```
 

evolve-die-repeat/debug_label.gd

@@ -0,0 +1,13 @@
+extends Label
+
+var counter := Test.new()  # C++ class
+
+func _ready() -> void:
+	text += str(counter.get_counter())
+
+func _process(delta: float) -> void:
+	#if Input.is_action_just_pressed("ui_accept"):
+	counter.increment()
+	var baseText := text
+	baseText = baseText.left(baseText.length() - str(counter.get_counter()).length())
+	text = baseText + str(counter.get_counter())

evolve-die-repeat/debug_label.gd.uid

@@ -0,0 +1 @@
+uid://ceut2lrvkns75

evolve-die-repeat/molecular_stag.tscn

@@ -1,8 +1,12 @@
-[gd_scene format=3 uid="uid://b55w56d4twno1"]
+[gd_scene load_steps=2 format=3 uid="uid://b55w56d4twno1"]
+
+[ext_resource type="Script" uid="uid://ceut2lrvkns75" path="res://debug_label.gd" id="1_quyes"]
 
 [node name="MolecularStag" type="Node2D"]
 
-[node name="Label" type="Label" parent="."]
+[node name="DebugLabel" type="Label" parent="."]
 offset_right = 40.0
 offset_bottom = 23.0
-text = "Debug: You made it into the game!"
+text = "Debug: You made it into the game!
+This is running from C++:                         "
+script = ExtResource("1_quyes")

evolve-die-repeat/thirdparty/.gitignore

@@ -0,0 +1,8 @@
+bin
+*.uid
+*sconsign.dblite
+**.os
+
+godot-cpp/bin/
+*.o
+*.so

evolve-die-repeat/thirdparty/SConstruct

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+import os
+from SCons.Script import DefaultEnvironment, ARGUMENTS, Glob, Dir
+
+env = DefaultEnvironment()
+platform = ARGUMENTS.get("platform", "linux")
+target = ARGUMENTS.get("target", "template_debug")  # or template_release
+arch = ARGUMENTS.get("arch", "x86_64")
+
+HERE = Dir(".").abspath
+GODOTCPP = os.path.join(HERE, "godot-cpp")
+
+inc_paths = [
+    os.path.join(GODOTCPP, "include"),
+    os.path.join(GODOTCPP, "gen", "include"),
+]
+for extra in ("godot-headers", "gdextension"):
+    p = os.path.join(GODOTCPP, extra)
+    if os.path.isdir(p):
+        inc_paths.append(p)
+
+env.Append(CPPPATH=inc_paths)
+env.Append(LIBPATH=[os.path.join(GODOTCPP, "bin")])
+env.Append(CXXFLAGS=["-std=c++17", "-fPIC"])
+
+env.Append(LIBS=[f"godot-cpp.{platform}.{target}.{arch}"])
+
+outdir = os.path.join(HERE, "bin")
+os.makedirs(outdir, exist_ok=True)
+soname = f"gol.{platform}.{'debug' if target == 'template_debug' else 'release'}.{arch}"
+
+env.SharedLibrary(target=os.path.join(outdir, soname), source=Glob("src/*.cpp"))

evolve-die-repeat/thirdparty/cpp.gdextension

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+
+[configuration]
+entry_symbol = "gol_library_init"
+compatibility_minimum = "4.5"   ; required in 4.5+
+reloadable = true
+
+[libraries]
+linux.debug.x86_64   = "res://thirdparty/bin/libgol.linux.debug.x86_64"
+
+

evolve-die-repeat/thirdparty/godot-cpp

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+Subproject commit e83fd0904c13356ed1d4c3d09f8bb9132bdc6b77

evolve-die-repeat/thirdparty/src/test.cpp

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+
+#include <gdextension_interface.h>
+#include <godot_cpp/classes/ref_counted.hpp>
+#include <godot_cpp/core/class_db.hpp>
+#include <godot_cpp/core/defs.hpp>
+#include <godot_cpp/godot.hpp>
+
+using namespace godot;
+
+class Test : public RefCounted {
+  GDCLASS(Test, RefCounted);
+
+  int counter = 0;
+
+  static void _bind_methods() {
+    ClassDB::bind_method(D_METHOD("increment"), &Test::increment);
+    ClassDB::bind_method(D_METHOD("get_counter"), &Test::get_counter);
+    ClassDB::bind_method(D_METHOD("set_counter", "value"), &Test::set_counter);
+    ClassDB::add_property("Test", PropertyInfo(Variant::INT, "counter"),
+                          "set_counter", "get_counter");
+  }
+
+public:
+  int increment() {
+    counter += 1;
+    return counter;
+  }
+
+  int get_counter() const { return counter; }
+
+  void set_counter(int p_value) { counter = p_value; }
+};
+
+extern "C" GDExtensionBool GDE_EXPORT
+gol_library_init(GDExtensionInterfaceGetProcAddress get_proc_address,
+                 GDExtensionClassLibraryPtr library,
+                 GDExtensionInitialization *r_initialization) {
+
+  static GDExtensionBinding::InitObject init(get_proc_address, library,
+                                             r_initialization);
+
+  init.register_initializer([](ModuleInitializationLevel p_level) {
+    if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
+      return;
+    }
+    ClassDB::register_class<Test>();
+  });
+
+  init.register_terminator([](ModuleInitializationLevel /*p_level*/) {
+    // no-op
+  });
+
+  init.set_minimum_library_initialization_level(
+      MODULE_INITIALIZATION_LEVEL_SCENE);
+  return init.init();
+}