paint: external plugins

.gitignore

@@ -1,4 +1,4 @@
 **/build*/
+paint/plugins/external
 .vscode
 *.DS_Store
-*.blend1

paint/plugins/plugins.c

@@ -148,6 +148,10 @@ static void *import_fbx(char *path) {
 	return res;
 }
 
+#ifdef WITH_EXTERNAL
+	void external_init();
+#endif
+
 void plugins_init() {
 	path_texture_formats(); // Init array
 	any_map_set(import_texture_importers, "exr", import_exr);
@@ -170,6 +174,10 @@ void plugins_init() {
 	any_array_push(_path_mesh_formats, "fbx");
 
 	any_map_set(util_mesh_unwrappers, "uv_unwrap", proc_uv_unwrap);
+
+#ifdef WITH_EXTERNAL
+	external_init();
+#endif
 }
 
 #endif

paint/plugins/project.js

@@ -9,4 +9,9 @@ project.add_cfiles("io_gltf/**");
 project.add_cfiles("io_fbx/**");
 project.add_cfiles("io_tiff/**");
 
+if (fs_exists(os_cwd() + "/../paint/plugins/external")) {
+    project.add_cfiles("external/**");
+    project.add_define("WITH_EXTERNAL");
+}
+
 return project;