Make most resources (save for packedscenes and scripts) reload if they change on disk. Closes #4059.

core/resource.cpp

@@ -30,7 +30,7 @@
 #include "core_string_names.h"
 #include <stdio.h>
 #include "os/file_access.h"
-
+#include "io/resource_loader.h"
 
 void ResourceImportMetadata::set_editor(const String& p_editor) {
 
@@ -218,14 +218,36 @@ String Resource::get_name() const {
 	return name;
 }
 
-bool Resource::can_reload_from_file() {
+bool Resource::editor_can_reload_from_file() {
 
-	return false;
+	return true; //by default yes
 }
 
 void Resource::reload_from_file() {
 
 
+	String path=get_path();
+	if (!path.is_resource_file())
+		return;
+
+	Ref<Resource> s = ResourceLoader::load(path,get_type(),true);
+
+	if (!s.is_valid())
+		return;
+
+	List<PropertyInfo> pi;
+	s->get_property_list(&pi);
+
+	for (List<PropertyInfo>::Element *E=pi.front();E;E=E->next()) {
+
+		if (!(E->get().usage&PROPERTY_USAGE_STORAGE))
+			continue;
+		if (E->get().name=="resource/path")
+			continue; //do not change path
+
+		set(E->get().name,s->get(E->get().name));
+
+	}
 }
 
 

core/resource.h

@@ -121,7 +121,7 @@ protected:
 	void _take_over_path(const String& p_path);
 public:
 
-	virtual bool can_reload_from_file();
+	virtual bool editor_can_reload_from_file();
 	virtual void reload_from_file();
 
 	void register_owner(Object *p_owner);

core/script_language.h

@@ -78,6 +78,7 @@ class Script : public Resource {
 
 protected:
 
+	virtual bool editor_can_reload_from_file() { return false; } // this is handled by editor better
 	void _notification( int p_what);
 	static void _bind_methods();
 

scene/resources/packed_scene.h

@@ -196,6 +196,7 @@ class PackedScene : public Resource {
 
 protected:
 
+	virtual bool editor_can_reload_from_file() { return false; } // this is handled by editor better
 	static void _bind_methods();
 public:
 

scene/resources/sample.cpp

@@ -187,6 +187,8 @@ RID Sample::get_rid() const {
 	return sample;
 }
 
+
+
 void Sample::_bind_methods(){
 
 

scene/resources/sample.h

@@ -75,6 +75,7 @@ protected:
 
 public:
 
+
 	void create(Format p_format, bool p_stereo, int p_length);
 
 	Format get_format() const;

scene/resources/texture.cpp

@@ -98,10 +98,6 @@ Texture::Texture() {
 
 
 
-bool ImageTexture::can_reload_from_file() {
-
-	return true;
-}
 
 void ImageTexture::reload_from_file() {
 

scene/resources/texture.h

@@ -103,7 +103,6 @@ private:
 	float lossy_storage_quality;
 
 protected:
-	virtual bool can_reload_from_file();
 	virtual void reload_from_file();
 
 	bool _set(const StringName& p_name, const Variant& p_value);

tools/editor/editor_node.cpp

@@ -2804,10 +2804,12 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 			List<Ref<Resource> > cached;
 			ResourceCache::get_cached_resources(&cached);
-
+			//this should probably be done in a thread..
 			for(List<Ref<Resource> >::Element *E=cached.front();E;E=E->next()) {
 
-				if (!E->get()->can_reload_from_file())
+				if (!E->get()->editor_can_reload_from_file())
+					continue;
+				if (!E->get()->get_path().is_resource_file() && !E->get()->get_path().is_abs_path())
 					continue;
 				if (!FileAccess::exists(E->get()->get_path()))
 					continue;