first commit

.import/.gdignore

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+

.import/icon.png-487276ed1e3a0c39cad0279d744ee560.md5

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+source_md5="47313fa4c47a9963fddd764e1ec6e4a8"
+dest_md5="26ea799ea0a3da9e753b3ebe822e0570"
+

.import/rustgodottest.apple-touch-icon.png-ec42c4e60f08191988a15abdcdacae16.md5

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+source_md5="cf4aec4842e6f28b128d15ef58be76d0"
+dest_md5="f713b52cc8973914be7fa878566b7e90"
+

.import/rustgodottest.icon.png-d56bcdfb783f4fb63ef0fbffd631b690.md5

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+source_md5="47313fa4c47a9963fddd764e1ec6e4a8"
+dest_md5="26ea799ea0a3da9e753b3ebe822e0570"
+

.import/rustgodottest.png-3a0452a0c796f6e85991767fc67eb07c.md5

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+source_md5="7e41bf3051b18e392a4bb6c0cc45cd7c"
+dest_md5="73e4f4d3969b9486e63fd804f5f0f1a9"
+

NativeTest.gdns

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+[gd_resource type="NativeScript" load_steps=2 format=2]
+
+[sub_resource type="GDNativeLibrary" id=1]
+entry/HTML5.wasm32 = "res://nativetest/target/wasm32-unknown-emscripten/release/nativetest.wasm"
+entry/X11.64 = "res://nativetest/target/release/libnativetest.so"
+dependency/HTML5.wasm32 = [  ]
+dependency/X11.64 = [  ]
+
+[resource]
+class_name = "HelloWorld"
+library = SubResource( 1 )

Node2D.tscn

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+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://NativeTest.gdns" type="Script" id=1]
+
+[node name="Node2D" type="Node2D"]
+script = ExtResource( 1 )

default_env.tres

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+[gd_resource type="Environment" load_steps=2 format=2]
+
+[sub_resource type="ProceduralSky" id=1]
+
+[resource]
+background_mode = 2
+background_sky = SubResource( 1 )

export_presets.cfg

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+[preset.0]
+
+name="HTML5"
+platform="HTML5"
+runnable=true
+custom_features=""
+export_filter="all_resources"
+include_filter="*.wasm"
+exclude_filter=""
+export_path="test/rustgodottest.html"
+script_export_mode=1
+script_encryption_key=""
+
+[preset.0.options]
+
+custom_template/debug=""
+custom_template/release=""
+variant/export_type=2
+vram_texture_compression/for_desktop=true
+vram_texture_compression/for_mobile=false
+html/export_icon=true
+html/custom_html_shell="res://template.html"
+html/head_include=""
+html/canvas_resize_policy=2
+html/focus_canvas_on_start=true
+html/experimental_virtual_keyboard=false
+progressive_web_app/enabled=false
+progressive_web_app/offline_page=""
+progressive_web_app/display=1
+progressive_web_app/orientation=0
+progressive_web_app/icon_144x144=""
+progressive_web_app/icon_180x180=""
+progressive_web_app/icon_512x512=""
+progressive_web_app/background_color=Color( 0, 0, 0, 1 )

icon.png.import

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+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://icon.png"
+dest_files=[ "res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

nativetest/.cargo/config.toml

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+[target.wasm32-unknown-emscripten]
+rustflags = [
+    "-Clink-arg=-sSIDE_MODULE=2", # build a side module that Godot can load
+    "-Zlink-native-libraries=no", # workaround for a wasm-ld error during linking
+    "-Cpanic=abort", # workaround for a runtime error related to dyncalls
+]

nativetest/.envrc

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+use flake

nativetest/.gitignore

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+/target
+/Cargo.lock
+.direnv

nativetest/Cargo.toml

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+[package]
+name = "nativetest"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gdnative = "0.11.2"

nativetest/flake.lock

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+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1656363765,
+        "narHash": "sha256-al9eMT2a66tiQQMys40orUS7f2Wg9cBqbEd321HE/EA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ff8b619cfecb98bb94ae49ca7ceca937923a75fa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ff8b619cfecb98bb94ae49ca7ceca937923a75fa",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1665296151,
+        "narHash": "sha256-uOB0oxqxN9K7XGF1hcnY+PQnlQJ+3bP2vCn/+Ru/bbc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "14ccaaedd95a488dd7ae142757884d8e125b3363",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1672712534,
+        "narHash": "sha256-8S0DdMPcbITnlOu0uA81mTo3hgX84wK8S9wS34HEFY4=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "69fb7bf0a8c40e6c4c197fa1816773774c8ac59f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

nativetest/flake.nix

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+{
+  inputs = {
+    nixpkgs.url =
+      "github:NixOS/nixpkgs/ff8b619cfecb98bb94ae49ca7ceca937923a75fa";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+      in with pkgs; {
+        devShells.default = mkShell {
+          buildInputs = [
+            (rust-bin.nightly."2022-09-02".default.override {
+              extensions = [ "rust-src" ];
+              targets = [ "wasm32-unknown-emscripten" ];
+            })
+            libclang
+            emscripten
+          ];
+          C_INCLUDE_PATH = "${emscripten}/share/emscripten/cache/sysroot/include";
+          LIBCLANG_PATH = "${libclang.lib}/lib";
+          EM_CACHE = "/tmp/emscripten-cache";
+        };
+      });
+}

nativetest/src/lib.rs

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+use gdnative::prelude::*;
+
+#[derive(NativeClass)]
+#[inherit(Node)]
+struct HelloWorld;
+
+#[methods]
+impl HelloWorld {
+    fn new(_owner: &Node) -> Self {
+        HelloWorld
+    }
+
+    #[method]
+    fn _ready(&self) {
+        godot_print!("Hello from Rust!")
+    }
+}
+
+fn init(handle: InitHandle) {
+    handle.add_class::<HelloWorld>();
+}
+
+godot_init!(init);

project.godot

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+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=4
+
+[application]
+
+config/name="rustgodottest"
+run/main_scene="res://Node2D.tscn"
+config/icon="res://icon.png"
+
+[gui]
+
+common/drop_mouse_on_gui_input_disabled=true
+
+[physics]
+
+common/enable_pause_aware_picking=true
+
+[rendering]
+
+environment/default_environment="res://default_env.tres"

template.html

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+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Titled Jam Team (internal build)</title>
+        <meta charset="UTF-8">
+    </head>
+    <body>
+        <noscript>Why do you not have JavaScript?</noscript>
+        <canvas id="canvas"></canvas>
+        <script src="$GODOT_URL"></script>
+        <script>
+            const urlParams = new URLSearchParams(document.URL)
+            const wasm = "tmp_js_export"
+            const pck = "tmp_js_export.pck"
+            const engine = new Engine();
+
+            Promise.all([
+                engine.init(wasm),
+                engine.preloadFile(pck)
+            ]).then(() => {
+                return engine.start({args: ['--main-pack', pck]})
+            })
+        </script>
+    </body>
+</html>