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Hotreload of externally edited GDScript #20910

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Hotreload of externally edited GDScript #20910

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9cbf6b3
[fix] Hotreload of externally edited GDScript
T4g1 Aug 14, 2018
e16f27a
Merge branch 'master' of https://github.com/godotengine/godot into fi…
T4g1 Oct 10, 2019
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7 changes: 2 additions & 5 deletions editor/plugins/script_text_editor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -789,12 +789,9 @@ void ScriptEditor::_update_modified_scripts_for_external_editor(Ref<Script> p_fo
uint64_t date = FileAccess::get_modified_time(script->get_path());

if (last_date != date) {
bool soft = script->get_instance_base_type() == "EditorPlugin"; //always soft-reload editor plugins

Ref<Script> rel_script = ResourceLoader::load(script->get_path(), script->get_class(), true);
ERR_CONTINUE(!rel_script.is_valid());
script->set_source_code(rel_script->get_source_code());
script->set_last_modified_time(rel_script->get_last_modified_time());
script->update_exports();
script->get_language()->reload_tool_script(script, soft);
}
}
}
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11 changes: 11 additions & 0 deletions modules/gdscript/gdscript.cpp
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Expand Up @@ -1681,6 +1681,17 @@ void GDScriptLanguage::reload_tool_script(const Ref<Script> &p_script, bool p_so
for (Map<Ref<GDScript>, Map<ObjectID, List<Pair<StringName, Variant> > > >::Element *E = to_reload.front(); E; E = E->next()) {

Ref<GDScript> scr = E->key();
Ref<Script> rel_scr = ResourceLoader::load(scr->get_path(), scr->get_class(), true);
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This may break scripts that were edited in the built-in editor but not saved? I think there has to be a different way to do this.

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This is still unresolved @T4g1.

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Sorry, I'm finally back into gamedev, I'll work on that this week.

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I looked at it, this fix is no longer working and I don't have a good enough understanding of the engine to fix it right now. I doubt that I will dive more on this part as I do not use an external editor anymore but here is where I'm stuck: https://github.com/godotengine/godot/blob/master/editor/plugins/script_editor_plugin.cpp#L785 So we keep the edited script and we then want to script->reload() it, problem is, "has_instances" is true in GDScript::reload so the fail condition triggers: What instances does and why it needs to be empty for reload is unclear for me but depending on that, one could: a) discard it before reload, b) clear it and re-populate it after reload, c) remove the fail condition on has_instances

ERR_CONTINUE(!rel_scr.is_valid());
scr->set_source_code(rel_scr->get_source_code());

#ifdef TOOLS_ENABLED

scr->set_last_modified_time(rel_scr->get_last_modified_time());

#endif

scr->update_exports();
scr->reload(p_soft_reload);

//restore state if saved
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