bevy_mod_scripting 0.19.0

Multi language scripting in Bevy
Documentation 
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// #main_script multi_lang.lua
SetCurrentLanguage language="Lua"
InstallPlugin emit_responses=false
SetupHandler OnTest=null, Update=null

SetCurrentLanguage language="Rhai"
InstallPlugin emit_responses=false
SetupHandler OnTest=null, Update=null
FinalizeApp

// load lua script
SetCurrentLanguage language="Lua"
LoadScriptAs as_name="script_lua", path="multi_lang.lua"
WaitForScriptLoaded name="script_lua"
AttachStaticScript script="script_lua"

// load rhai script
SetCurrentLanguage language="Rhai"
LoadScriptAs as_name="script_rhai", path="multi_lang.rhai"
WaitForScriptLoaded name="script_rhai"
AttachStaticScript script="script_rhai"

// expect no responses
RunUpdateOnce
AssertNoCallbackResponsesEmitted

// emit callbacks
EmitScriptCallbackEvent emit_response=true, label="OnTest", language="Lua", recipients="AllScripts", script="script_lua"
RunUpdateOnce
AssertCallbackSuccess attachment="StaticScript", label="OnTest", language="Lua", script="script_lua", expect_string_value="Hi from Lua!"
AssertNoCallbackResponsesEmitted

EmitScriptCallbackEvent emit_response=true, label="OnTest", language="Rhai", recipients="AllScripts", script="script_rhai"
RunUpdateOnce
AssertCallbackSuccess attachment="StaticScript", label="OnTest", language="Rhai", script="script_rhai", expect_string_value="Hi from Rhai!"
AssertNoCallbackResponsesEmitted

EmitScriptCallbackEvent emit_response=true, label="OnTest", recipients="AllScripts", script="script_lua", expect_string_value="Hi from Lua!"
RunUpdateOnce
AssertCallbackSuccess attachment="StaticScript", label="OnTest", language="Lua", script="script_lua"
AssertCallbackSuccess attachment="StaticScript", label="OnTest", language="Rhai", script="script_rhai"