Customizing Assistants

Preamble

Everything presented in this chapter is fully optional and I even recommend to not use it right from the start, since it requires some effort to configure and maybe several tests to get it right. But, once you have mastered it, it will take the experience with the Assistants to a whole new level. Welcome to the fascinating world of GPT and large language models (aka LLMs).

Introduction

All Virtual Assistants like the Race Engineer, Race Strategist and Race Spotter have been implemented using a specialized rule engine and classical voice recognition and speech generation.

The rule sets for the Race Assistants can be found in the Resources\Rules directory in the installation folder of Simulator Controller. But as with most of the configuration files of Simulator Controller, they can be locally customized or extended. Simply make a copy of one of the rule files and place it in the Simulator Controller\Rules directory, which can be found in your user Documents folder. Modifying or extending the rule sets of a given Assistant require programming skills and good understanding of logical programming languages. A good introduction and reference for the builtin Hybrid Rule Engine can be found here.

The Driving Coach is already different than the other Assistants, since the purpose of this Assistant is a natural conversation with you as a driver using a lot of real world knowledge about sim racing and motorsports in general. The Driving Coach therefore is based on the famous GPT (aka general pretrained transformer, a kind of neural network) technology using a large language model (also termed LLM).

But is also possible to connect the rule based Assistants to an LLM to improve the cnversational capabilities or to alter or even extend the behavior of them. This all can be achieved by configuring the so called Assistant Boosters. The following documentation will give you all information you need to setup the Assistant Boosters.

Note: Seting up a connection to a GPT service and configuring the Assistant Boosters require some knowledge. Customizing the Conversation and the Reasoning bosters may require even some development skills. If you feel overwhelmed, no problem. Simply leave it aside and use the Assistants without connecting them to a GPT service. The will do their job. Or you can become a Patreon of the project and I will setup everything for you.

Important: Even if you are not using a local LLM Runtime are the resource requirements significantly higher compared to running an Assistant based on the rule engine alone. Therefore take a look at the Windows Task Manager to check whether your system can handle all that while using your favorite simulator.

Connecting an Assistant to an LLM

The voice recognition for all Assistants except the Driving Coach is normally pattern-based. Here, for example, you can find a documentation for the definition of the recognized commands of the Race Engineer and similar documentation is available for the other Assistants as well. The speech output of all Assistants is also preprogrammed with several different phrases for each message, to create at least a little variation.

Said this, it is clear, that the interaction with the Assistants, although already impressive, will not feel absolutely natural in many cases. But using the latest development in AI with LLMs (aka large language model) it became possible to improve the conversation capabilities of the Assistants even further. Whenever you see a small button with an icon which looks like a launching space rocket, you can configure AI pre- and post-processing for voice recognition, speech output and general conversation.

Please note, that the first three conversation-related boosters all share a GPT service and a single model, whereas you can choose a separate GPT service and model for the Reasoning booster, which requires strong reasoning skills, but no conversational skills at all. This might be helpful to select the best possible model for each task.

Please take a look at the documentation for the Driving Coach for a description of the different providers and LLMs which can be configured here.

IMPORTANT: As said in the beginning, all this is optional. The Race Assistants will do their job really good even without being connected to an LLM. Additionally, using a GPT service like OpenAI may create some costs, and running an LLM locally on your PC will require a very powerful system, especially when doing this while on the track. Therefore I recommend to use this feature not before everything else has been configured and is fully functional.

Disclaimer: Large Language Models, although incredibly impressive, are still under heavy development. Therefore it depends on the quality and capabilities of the model, whether the Assistant will react like expected. And in most cases, the support for non-English languages is quite limited. I recommend to use the Assistant Booster only for English-speaking Assistants for the time being. Beside that, you will get good results for the Rephrasing booster with almost any model, whereas for the Conversation or Reasoning boosters you will need one of the big boys like GPT 3.5 and above for decent results. The requirements in terms of language understanding is somewhat in between for the Recognition booster. You will have to invest some time experimenting with different models, but that is part of the the fun.

Overview of the different Assistant Boosters

Several boosters are available at the moment. The boosters Rephrasing and Understanding will not introduce additional capabilities or functionality, but will make the conversation more natural. I recommend to start with these boosters.

Good to know: Whenever one or more Assistant Boosters are configured for a Race Assistant, a transcript of every LLM activation is stored in the Simulator Controller\Logs\Transcripts folder which is located in your user Documents folder.

Rephrasing Booster

More variations in the speech output of the Assistants will be created, if Rephrasing is activated. This is done by using a GPT to rephrase one of the predefined phrases. The Activation setting defines the probability, with which the rephrasing happens (and thereby how many calls to the GPT service will be done) and using the Creativity setting, you can define, how strong the rephrasing will be. According to my tests, a value of 50% will create some intersting variation without altering the original sense of the message. Please note, that there are messages, especially the urgent alerts of the Spotter, which are time-critical. Those messages will never be send to the AI for rephrasing.

A very small context window can be used here, since only the phrase which is to be process plus a couple of instructions are send to the LLM.

Understanding Booster

If Understanding is activated, a GPT is used to semantically analyze your voice commands and match them to any of the pattern-bassed commands defined by the Assistants. This allows you to formulate your commands in any way you like, as long as the meaning the same as for the predefined command. Here is an example:

Grammar: [{Check, Please check} {the brake wear, the brake wear at the moment}, Tell me {the brake wear, the brake wear at the moment}]

A valid command that will be recognized for the pattern, will be: "Check the brake wear". When using the GPT-based semantically mapping, a command like: "We should check the brakes" will also be understood.

There are two Activation methods available, both with their pros and cons. "Always" means, that the LLM is always asked to interpret the given command, whereas "Unrecognized" means, that it is only used, when the pattern-based voice recognition cannot identify the command. The later will result in less calls to the LLM and therefore will probably reduce costs and - even more important - will be better in terms of responsiveness, if you are already quite familar with the command patterns.

Note: Using the semantic Understanding booster may only be usable in conjunction with voice recognition methods, that are cabable to recognize continuous, unstructured text. This is true for Google and Azure voice recognition, but not for the builtin voice recognition of Windows, which only work reliable for pattern-based recognition.

A context window of at least 2048 tokens is required for this booster, since all predefined command phrases will be supplied to the LLM for matching.

Conversation Booster

Normally an Assistant will tell you that he didn't understand you, when the spoken command has matched none of the predefined commands. Using the Conversation booster a special mode can be activated, that will redirect all non-recognized commands to the LLM for interpretation and processing. This LLM will have full access to the knowledebase of the Assistant and will therefore be able to run a knowledgeable conversation with you. The following table lists the type of knowledge, that will be available to a specific Assistant:

Assistant	Knowledge (1)
Race Engineer	Telemetry data incl. tyre pressures, tyre temperatures, tyre wear, brake temperatures, brake wear, fuel level, fuel consumption, damage, and so on. All this is available as real time values as well as historic values for the past 5 laps. Full pitstop history is also included and when a pitstop is planned, the plan is available, otherwise a forecast of the next pitstop will be part of the knowledge.
Race Strategist	Basic telemetry data (both real time and historic) but no detailed information about tyres, brakes and car damage. A reduced pitstop history is available and full information about the active strategy is included. Current position incl. detailed standings with gap and lap time information for all opponents is also available.
Race Spotter	Very basic telemetry data (both real time and historic) and no pitstop information. But current position incl. detailed standings with gap and lap time information for all opponents is provided.
Driving Coach	Beside the instructions that can be configured for the Driving Coach in general, the same information available to the Race Strategist is available to the Driving Coach as well.

(1) Depending on the availabilty of the data by the current simulator.

Since large parts of the knowledge base of the Assistants will be supplied to the LLM for matching, a context window of at least 4k tokens is required for this booster. Full standings history isn't possible at the moment, since this will overflow the input context area of the LLM, at least for the smaller models like GPT 3.5, Mistral 7b, and so on. Time will cure this problem, and I will update the capabilities of the integration, when more capable models become available. For the time being, the position data is available for the most recent laps and also the gaps for the most important opponents are passed to the LLM (for Strategist and Spotter).

Here is an example of the knowledge supplied by the Race Engineer to the LLM:

{
	"Damage": {
		"Bodywork": {
			"Front": "66.4 %",
			"Left": "0.0 %",
			"Rear": "0.0 %",
			"Right": "33.6 %"
		},
		"LapTimeLoss": "3.3 Seconds",
		"RepairTime": "0 Seconds",
		"Suspension": {
			"Suspension": {
				"FrontLeft": "27.3 %",
				"FrontRight": "43.2 %",
				"RearLeft": "15.9 %",
				"RearRight": "13.6 %"
			}
		}
	},
	"Fuel": {
		"Capacity": "125 Liter",
		"Consumption": "2.6 Liter",
		"Remaining": "1.5 Liter"
	},
	"Laps": [
		{
			"AirTemperature": 25,
			"BodyworkDamage": 0.0,
			"EngineDamage": 0.0,
			"FuelConsumption": "2 Liters",
			"FuelRemaining": "9 Liters",
			"Grip": "Green",
			"Nr": 2,
			"SuspensionDamage": 0.0,
			"Time": "110 Seconds",
			"TrackTemperature": 32,
			"Tyres": {
				"Pressures": {
					"Front.Left": "27.13 PSI",
					"Front.Right": "27.34 PSI",
					"Rear.Left": "27.17 PSI",
					"Rear.Right": "27.50 PSI"
				},
				"Temperatures": {
					"Front.Left": "82.8 Celsius",
					"Front.Right": "71.4 Celsius",
					"Rear.Left": "86.3 Celsius",
					"Rear.Right": "77.3 Celsius"
				}
			},
			"Valid": true,
			"Weather": "Dry"
		},
		{
			"AirTemperature": 25,
			"BodyworkDamage": 0.0,
			"EngineDamage": 0.0,
			"FuelConsumption": "3 Liters",
			"FuelRemaining": "7 Liters",
			"Grip": "Green",
			"Nr": 3,
			"SuspensionDamage": 0.0,
			"Time": "108 Seconds",
			"TrackTemperature": 32,
			"Tyres": {
				"Pressures": {
					"Front.Left": "27.22 PSI",
					"Front.Right": "27.41 PSI",
					"Rear.Left": "27.26 PSI",
					"Rear.Right": "27.58 PSI"
				},
				"Temperatures": {
					"Front.Left": "83.8 Celsius",
					"Front.Right": "72.2 Celsius",
					"Rear.Left": "87.3 Celsius",
					"Rear.Right": "78.1 Celsius"
				}
			},
			"Valid": true,
			"Weather": "Dry"
		},
		{
			"AirTemperature": 25,
			"BodyworkDamage": 0.0,
			"EngineDamage": 0.0,
			"FuelConsumption": "3 Liters",
			"FuelRemaining": "4 Liters",
			"Grip": "Green",
			"Nr": 4,
			"SuspensionDamage": 3.099,
			"Time": "113 Seconds",
			"TrackTemperature": 32,
			"Tyres": {
				"Pressures": {
					"Front.Left": "27.03 PSI",
					"Front.Right": "27.34 PSI",
					"Rear.Left": "27.14 PSI",
					"Rear.Right": "26.57 PSI"
				},
				"Temperatures": {
					"Front.Left": "82.3 Celsius",
					"Front.Right": "71.5 Celsius",
					"Rear.Left": "87.2 Celsius",
					"Rear.Right": "78.0 Celsius"
				}
			},
			"Valid": true,
			"Weather": "Dry"
		},
		{
			"AirTemperature": 25,
			"BodyworkDamage": 22.90,
			"EngineDamage": 0.0,
			"FuelConsumption": "3 Liters",
			"FuelRemaining": "2 Liters",
			"Grip": "Green",
			"Nr": 5,
			"SuspensionDamage": 4.399,
			"Time": "107 Seconds",
			"TrackTemperature": 32,
			"Tyres": {
				"Pressures": {
					"Front.Left": "27.24 PSI",
					"Front.Right": "27.52 PSI",
					"Rear.Left": "27.23 PSI",
					"Rear.Right": "26.62 PSI"
				},
				"Temperatures": {
					"Front.Left": "84.4 Celsius",
					"Front.Right": "73.4 Celsius",
					"Rear.Left": "88.2 Celsius",
					"Rear.Right": "78.6 Celsius"
				}
			},
			"Valid": true,
			"Weather": "Dry"
		}
	],
	"Pitstop": {
		"Refuel": "60.0 Liters",
		"Repairs": false,
		"Status": "Forecast",
		"TyreChange": true,
		"TyreCompound": "Dry (Black)",
		"TyrePressures": {
			"FrontLeft": "27.1 PSI",
			"FrontRight": "26.7 PSI",
			"RearLeft": "27.1 PSI",
			"RearRight": "27.2 PSI"
		},
		"TyreSet": 9
	},
	"Pitstops": [
		{
			"AirTemperature": "25.0 Celsius",
			"Lap": 4,
			"Nr": 1,
			"Refuel": "56.8 Liters",
			"Repairs": false,
			"TrackTemperature": "32.0 Celsius",
			"TyreChange": true,
			"TyreCompound": "Dry (Black)",
			"TyrePressures": {
				"FrontLeft": "26.6 PSI",
				"FrontRight": "26.4 PSI",
				"RearLeft": "26.6 PSI",
				"RearRight": "26.1 PSI"
			},
			"TyreSet": 8
		}
	],
	"Session": {
		"Car": "mclaren_720s_gt3",
		"Format": "Time",
		"RemainingLaps": 21,
		"RemainingTime": "2140 seconds",
		"Simulator": "Unknown",
		"Track": "Barcelona",
		"TrackLength": "0 Meters",
		"Type": "Practice"
		"AvailableTyres": [
			{
				"Compound": "Dry (Black)",
				"Sets": 99,
				"Weather": [ "Dry", "Drizzle" ]
			},
			{
				"Compound": "Wet (Black)",
				"Sets": 99,
				"Weather": [ "LightRain", "MediumRain", "HeavyRain", "Thunderstorm" ]
			}
		]
	},
	"Stint": {
		"Driver": "Oliver Doe (JD)",
		"Lap": 6,
		"RemainingTime": "2140 Seconds"
	},
	"Track": {
		"Grip": "Green",
		"Temperature": "32 Celsius"
	},
	"Tyres": {
		"Compound": "Dry (Black)",
		"Pressures": {
			"Current": {
				"FrontLeft": "27.24 PSI",
				"FrontRight": "27.52 PSI",
				"RearLeft": "27.23 PSI",
				"RearRight": "26.62 PSI"
			},
			"Ideal": {
				"FrontLeft": "27.7 PSI",
				"FrontRight": "27.7 PSI",
				"RearLeft": "27.7 PSI",
				"RearRight": "27.7 PSI"
			},
			"Setup": {
				"FrontLeft": "26.6 PSI",
				"FrontRight": "26.4 PSI",
				"RearLeft": "26.6 PSI",
				"RearRight": "26.1 PSI"
			}
		},
		"Temperatures": {
			"Current": {
				"FrontLeft": "84.4 Celsius",
				"FrontRight": "73.4 Celsius",
				"RearLeft": "88.2 Celsius",
				"RearRight": "78.6 Celsius"
			}
		}
	},
	"Weather": {
		"10 Minutes": "Dry",
		"30 Minutes": "Dry",
		"Now": "Dry",
		"Temperature": "25 Celsius"
	}
}

Notes:

• As said, the available data depeneds on the current simulator. If available, information about tyre wear, brake temperatures and wear and so on are included as well.
• The number of laps in the lap history is limited to the 5 recent laps.
• The number of pitstops in the pitstop history is unlimited.

Additionally, you can allow the LLM to call predefined or custom actions as a result of your conversation. For example, if you ask the Strategist whether an undercut might be possible in one of the next laps, the LLM may call the Monte Carlo traffic simulation using an internal action. Which actions will be available to the LLM depends on the current Assistant. See corresponding documentation for the Strategist for an example.

IMPORTANT: When action handling is enabled, it might be necessary to disable the Recognition booster or at least set the "Creativity" to a very low value. Otherwise the "Recognition" booster might detect a command pattern, which will match to a pre-defined voice command, thereby preventing the LLM from creating a custom action plan.

Reasoning Booster

Reasoning is the most complex and most capable booster, since it allows you to alter or extend the behavior of the Assistant. You can use predefined events or even define your own ones in the Rule Engine (as shown below), which then result in a request to the LLM (actually you can process events even without using the LLM directly in rule engine, but this is only half of the fun). Similar to the Conversation bosster above, the LLM then can decide to activate one or more predefined or custom actions to fulfill the request or react to the situation. To support its conclusion, the LLM will have full access to the same knowledge as in the Conversation booster.

The Reasoning booster implements an LLM agent framework architecture also used by famous open-source agent development environments like LangChain. The difference here is the deep integration with the rule engine of the Assistants as the central instance for the LLM activation.

As already mentioned, you can choose a different LLM for this booster, because here strong reasoning skills are way more important than conversational excellence.

Important: This booster directly alters the behavior of the Assistant for the good or for the bad. Even if you don't change or extend the definition of the events and actions, it still depends on the reasoning capabilities of the used language model, whether the Assistant will behave as expected. Therefore, always test everything before using it in an important race.

Using Actions & Events

The Reasoning bosster as well as to some extent the Conversation booster rely on the capability of the configured LLM to call external functions as part of their reasoning process. This is achieved by the so-called tool interface of the LLM. Tools are supported at the time of this writing by the following models:

• GPT 3.5 and above from OpenAI
• Mistral Small, Mistral Large and Mixtral 8x22b from Mistral AI
• Claude3 and above by Anthropic (via OpenRouter)
• Command-R+ by Cohere (via OpenRouter, but not working properly yet)
• Some Open Source models, such as Open Hermes, also support tools but with a varying degree of reliability

Please note that calling actions is currently only available when using OpenAI, Mistral AI or OpenRouter are used as GPT service providers.

Instructions

For each of the above Assistant Boosters, you can edit the instructions that are send to the LLM by clicking on the button labeled "Instructions...". A new window will open, where you can edit all related instructions for each of the supported languages. Whenever you want to restore the original instruction, you can do this by clicking on the small button with the "Reload" icon.

Below you find all instruction categories and the supported variables:

Booster	Instruction (1)	What	Description
Rephrasing	Rephrase	Scope	This instruction is used when a given phrase by an Assistant should be rephrased without changing its language.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
		%text%	The text or phrase, which should be rephrased.
	RephraseTranslate	Scope	This instruction is used when a given phrase by an Assistant should be rephrased and then translated to a different language.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
		%language%	This variable specifies the target language, for example "French", in which the resulting phrase should be formulated.
		%text%	The text or phrase, which should be rephrased and then translated.
	Translate	Scope	This instruction is used when a given phrase by an Assistant should only be translated without changing the wording.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
		%language%	This variable specifies the target language, for example "French", for the resulting phrase.
		%text%	The text or phrase, which should be translated.
Understanding	Recognize	Scope	This instruction is used when a voice command has been recognized, which cannot be mapped to one of the predefined command patterns.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
		%commands%	A table of examples for all predefined commands, so that the LLM can match the unrecognized command to one of those examples. Each line consist of a command name followed by an equal sign and a number of examples for the command. Example: "Yes=Yes thank you, Yes of course, Yes please". The LLM should the return the name of the command or "Unknown", if no match was possible.
		%text%	The text of the command that should be identified.
Conversation	Character	Scope	This instruction is used when a voice command has been recognized, which cannot be mapped to one of the predefined command patterns, even after using the LLM to map the command semantically. It is assumed that the user wants a free conversation with the LLM. This instruction then defines the profession and the personality of the Assistant. You can also include general instructions like "Keep your answers short and precise", and so on.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
		%name%	Specifies the name of the Assistant.
	Knowledge	Scope	This instruction is used to supply the current content of the knowledge base to the LLM. The content of the knowledge base depends on the type of the Assistant.
		%knowledge%	This variable is substituted with the content of the knowledge base in a self-explaining JSON format.
Reasoning	Character	Scope	This instruction is used when an event has been raised by the rule engine. The LLM must decide which of the provided actions shall be used to deal with the situaton.
		%assistant%	The type or role of the current Assistant, for example "Race Engineer".
	Knowledge	Scope	This instruction is used to supply the current content of the knowledge base to the LLM. The content of the knowledge base depends on the type of the Assistant.
		%knowledge%	This variable is substituted with the content of the knowledge base in a self-explaining JSON format.
	Event	Scope	The event represents the main instruction for the LLM, which describes what just happened or how the situation has changed.
		%event%	This variable is substituted by the phrase which describes the event. Example: "It just started raining.". This phrase is defined by the event code for a predefined event or the event definition for a custom event.
	Goal	Scope	The goal supplies additional information to the LLM by some predefined events, which helps the LLM to come up with a good conclusion.
		%goal%	This variable is substituted by the phrase which instructs the LLM how to handle the given event. Example: "Check how to set up the car for wet onditions.". This phrase is defined by the event code for a predefined event. It cannot be provided for custom event definitions.

Notes

(1) Each phrase is available in different languages, for example "Rephrase (DE)" for the German version.

How it works

Since the control flow between the rule engine and the LLM especially for the Reasoning booster is not exactly easy to understand at the beginning - and since, as we all know, a picture is worth a thousand words - here is a picture.

1. It all starts with an event, typically signalled by the rule engine. An event will be in most cases a special condition in the state of the car or the session (fuel is running low, weather is changing, and so on). There are many predefined events available, which you can find below and you can define your own events, of course.
2. The event will generate a command or information phrase for the LLM and this will be passed to the GPT service together with a complete representation of the current knowledge, as show above, and a list of available actions to call.
3. The LLM can decide to call one or more of these actions, which then will be executed in parallel.
4. An action can do almost anything. Typically it triggers a special behaviour of the Assistant, for example, create a pitstop plan, but it can also call any of the available action functions in Simulator Controller, or it can generate voice output, or ...

Managing Actions

A special editor is provided to manage the actions for a given Assistant. An action allows the LLM not only to react with a message to your request, but also to trigger some predefined functions. There are several predefined actions available for the different assistants, but you can also define your own ones.

To open this editor, click on the small button with the "Pencil" icon on the right of the "Actions" drop down menu in the Conversation booster or by clicking on the "Actions..." button for a Reasoning booster.

You can enable or disable individual predefined actions using the checkbox on the left of the action name. And you can define your own actions with a click on the "+" button. But this requires a very detailed understanding of the architecture and inner workings of Simulator Controller and the Assistants as well as an excellent understanding of LLMs and how they call tools and functions. This is far beyond the scope of this documentation, but I try to give a brief introduction.

1. When an LLM is activated, it is possible to provide a list of function descriptions to the LLM. OpenAI has defined the quasi-standard for the function description in JSON format as part of their API:

   {
       "type": "function",
       "function": {
    	   "name": "get_current_temperature",
    	   "description": "Get the current temperature for a specific location",
    	   "parameters": {
    		   "type": "object",
    		   "properties": {
    			   "location": {
    				   "type": "string",
    				   "description": "The city and state, e.g., San Francisco, CA"
    			   },
    			   "unit": {
    				   "type": "string",
    				   "enum": ["Celsius", "Fahrenheit"],
    				   "description": "The temperature unit to use. Infer this from the user's location."
    			   }
    		   },
    		   "required": ["location", "unit"]
    	   }
       }
   }
   

   This format is used by many other GPT service providers as well. Every LLM, that understands this type of function description, will be able to trigger actions, when used as a Conversation or Reasoning booster. The editor for the Conversation or Reasoning actions shown above is for the most part a graphical user interface for this type of function definitions. But it also let you define how to react to a function call by the LLM (see next section).

   Additionally to all the information required by the LLM function definition you can specify whether the corresponding action will be available during the learning phase of the Assistant and whether the Assistant will acknowledge your request like it is done with many of the builtin voice commands. As a rule of thumb. this should be enabled for all actions you want to trigger by a corresponding question or command and should be disabled for all functions you expect the LLM to call automatically whenever needed.

   Note: The description of a function and each of their parameters is very important, since these are used by the LLM to understand when and how to invoke the function. It may require several iterations and different formulations until the LLM reacts as desired.

2. When the LLM decides to call such a function, it returns a special response which indicates the function(s) to be called together with values for at least all required parameters. You can now decide what to do, when the logical function is called by the LLM. Four different types of actions are available:

   Action Type	Description
   Assistant Method	A method of the object which represents the given Race Assistant is called. The method can either simply be the name of the method or it can have the format of a function call with a fixed number of predefined arguments (Example: requestInformation("Position"), which will let the Strategist give you information bout your current position in the race). Additional arguments will be appended, if defined for the action. You can also name several methods to be called located on multiple lines.
   Assistant Rule	The supplied rules are loaded into the Rule Engine of the given Race Assistant. These rules have full access to the knowledge base and all other rules of this Assistant. All arguments supplied by the LLM are created as facts in the knowledge base for the time of the execution. Please use enclosing percentage signs to reference the arguments. Example: %location% A special fact named %activation% will be set as well, which can be used to trigger rules, when no other fact is suitable.
   Controller Method	A method of the single instance of the SimulatorController class is called in the process "Simulator Controller.exe". The method can either simply be the name of the method or it can have the format of a function call with a fixed number of predefined arguments (Example: setMode("Launch"), which activates the Launch mode on one of the connected Button Boxes). Additional arguments will be appended, if defined for the action. You can also name several methods to be called located on multiple lines.
   Controller Function	A global function is called in the process "Simulator Controller.exe". The function can either simply be the name of the function to be called or it can have the format of a function call with a fixed number of predefined arguments (Example: trigger("!w"), which sends the keyboard command "Alt w" to the current simulator). Additional arguments will be appended, if defined for the action. You can also name several functions to be called located on multiple lines. Good candidates are the controller action functions, which are provided by the different plugins. See here for a complete overview.

3. The most versatile Action Type is obviously the "Assistant Rule", since it allows you to do almost anything, but it requires very good programming skills in the area of logical programming languages like Prolog and forward chaining production rule systems. Simulator Controller comes with a builtin Hybrid Rule Engine, which has been created exclusivly with the requirements of intelligent agents in mind. The Race Assistants have been implemented using this rule engine, but other applications of Simulator Controller are using it as well. You will find an extensive, developer-oriented documentation for the rule engine here and you can take a look at the rule sets of the Race Assistants to learn the language. They can be found in the Resources\Rules folder in the program folder of Simulator Controller. Start with "Race Engineer.rules".

   When defining the rules for a custom action, you can use the following predicates to connect to the given Assistant or even the "Simulator Controller.exe" process:

   • Assistant.Call(method, p1, p2, ...)

     Invokes the method on the instance of the Race Assistant class with some arguments. A variable number of arguments are supported.

   • Assistant.Speak(phrase)

     Outputs the given phrase using the voice of the given Race Assistant. phrase can be the label of a predefined phrase from the grammar definition of the Assistant.

   • Assistant.Ask(question)

     Asks the given Race Assistant a question or give a command. The result will be the same, as if the question or the command has been given by voice input.

   • Controller.Call(method, p1, p2, ...)

     Invokes the method on the instance of the SimulatorController class in the process "Simulator Controller.exe". with some arguments. A variable number of arguments are supported.

   • Function.Call(function, p1, p2, ...)

     Invokes the global function in the process "Simulator Controller.exe". with some arguments. A variable number of arguments are supported.

   You can use this predicates in backward chaining rules directly. Example:

   estimateTrackWetness() <= calculateTrackWetness(), Assistant.Speak("It will be too wet. I will come up with a new strategy."), Assistant.Call(planPitstop)
   

   Up to 6 arguments are supported for predicates with a variable number of arguments. If you need to pass more arguments, use the syntax Call(Assistant.Call, function, p1, ..., pn) for backward chaining rules. Same applies to any other of the above calls.

   In forward chaining rules, the syntax is a bit different:

   [?Track.Grip = Wet] => (Call: Assistant.Speak("It will be too wet. I will come up with a new strategy.")), (Call: Assistant.Call(planPitstop))
   

   Here you can use (Call: Assistant.Call(function, p1, ..., pn)), if more than 6 arguments should be passed to the function. Same applies to any other of the above calls.

As you can see, defining individual actions is really an expert topic and therefore nothing for the casual user. If you want use this feature, I can offer a personal introduction and coaching as part of the Patreon membership.

Here is a very simple example:

This action calls the controller acton "trigger" with "!w" as an argument in the Simulator Cntroller process. This sends the keyboard command Alt-w to the current simulator, thereby starting the windscreen wiper. This action may be activated by a voice command like "Can you start the windscreen wiper?" when using the Conversation booster, or it can be automatically triggered by the Reasoning booster, when an event is signalled that tells that it just started raining.

Managing Events

As discussed above, you can use predefined events or define your own events in the rule engine of a given Assistant, when using the Reasoning booster.

A special editor is provided to manage the events for a given Assistant. There are several predefined events available for the different assistants, but you can also define your own ones.

As you can see, this editor looks very similar to the actions editor discussed above. But there are many differences in the details. Please follow the instructions below, when defining your own events.

1. You have to supply a "Signal" name which uniquely identifies the event. When an event is raised by code, you have to supply exactly this identifier.

2. You have to supply a phrase which decribes the event to the LLM. Example: "It just started raining." If your event has defined parameters, you can reference the values of the arguments to the event in the phrase by enclosing them in "%". Example: "We started lap %lapNumber%."

   

3. The following event typs are supported:

   Event Type	Description
   Event Class	The event is handled by an instance of a builtin class. This is mainly used for predefined events provided by the Assistant implementation. Butif you are an experienced developer, you can implement your own event classes, which are based on the "AssistantEvent" class. Notes: 1. The name of the class must be entered into the "Class" field. It must be in the global name space. 2. You have to supply the "Signal" identifier, but you don't have to provide an event phrase, since this is derived by the implementation of the event class.
   Event Rule	The supplied rules are loaded into the rule engine of the given Race Assistant. These rules have full access to the knowledge base and all other rules of this Assistant. The event rules can use the full knowledge to derive whether the event in question should be raised. They then raise the event by calling the "Assistant.Raise* predicate, optionally supplying additional arguments to the event, which can be referenced in the event phrase. Note: Actually, you don't have to raise an event in the event rules, if you are able to handle the situation directly using the rules. In this case, the LLM is not activated.
   Event Disabled	This is a special one, inidcated by a "-" in the "Active" column in the list of events. It declares that the event is consumed, so that the rule engine does not do the default processing for this event. But the event is also processed by the LLM effectively disabling this type of event at all. This makes sense in combination with very smart LLMs, which will trigger actions simply by looking at the data (see the discussion here. This makes only sense for the builtin events, of course.

4. When defining the rules for a custom event, you can use all the predicates introduced above for actions. Additionally, you can use:

   • Assistant.Raise(signal, p1, p2, ...)

     Raises the given signal, thereby identifying the event to be processed by the LLM.

Here is an example of a few rules that together detect that it just started raining. Then the event "RainStart" is signalled to the LLM, which then can react and switch on the wiper, for example.

{None: [?Rain.Last]} => (Prove: Rain.Start.updateRain(Rain.Last))

{All: [?Lap], {Prove: Rain.Stop.updateRain(Rain.Now)},
	  [?Rain.Now != ?Rain.Last], [?Rain.Now = true]} => (Call: Assistant.Raise(RainStart))

priority: -5, {All: [?Lap], [?Rain.Now != ?Rain.Last]} => (Prove: Rain.Start.updateRain(Rain.Last))

Rain.Start.updateRain(?fact) <= !Weather.Weather.Now = Dry, !, Set(?fact, false)
Rain.Start.updateRain(?fact) <= !Weather.Weather.Now = Drizzle, !, Set(?fact, false)
Rain.Start.updateRain(?fact) <= Set(?fact, true)

Another example, this time using arguments:

This event signals a position change. The previous position and the new position are passed to the LLM for further investigation. Please note the subtle usage of the previous value of Position.Lost in the rule actions. Although it will be reset in the first action, the old value will be used in the second action. See here for more information about this variable behaviour.

Please also take a look at the other predefined events of the Race Engineer or the other Assistants to learn more about writing event rules. And I recommend to take a look at the knowledge base of a session to learn more about all the facts you canuse in the event rules (and also the action rules). To do this, activate the "Debug Knowledgebase" item in the tray bar menu of a given Assistant applicaton. Then open the corrsponding "*.knowledge" file in the Simulator Controller\Temp folder which is located in your user Documents folder.

Good to know: When an event handler is located for a given event signal, custom events are checked before all predefined events. This allows for customization of the predefined events.

Predefined Actions & Events

All Race Assistants come with a set of predefined Actions and Events for you to choose from. Most of the Actions will be available both in the Conversation and in the Reasoning boosters, but there are exceptions. Below is a complete reference for each Assistant.

Please note, that it depends on the available data in the knowledge base, whether the LLM will decide to trigger an action or not. If the LLM refuses to do so, you still have all the traditional voice commands and the controller actions at your disposal.

Beside the predefined actions for the different Assistant, which come with the standard installation as listed below, you can also define your own actions & events. But this will require a very deep knowledge of the inner workings of Simulator Controller and the Assistants. You have been warned.

Race Engineer

Actions

Action	Parameter(s)	Conversation	Reasoning	Command(s) / Description
Pitstop Planning	1. [Optional] targetLap 2. [Optional] refuelAmount 3. [Optional] changeTyres 4. [Optional] tyreCompound 5. [Optional] repairDamage 6. [Optional] swapDriver	Yes	Yes	"We must pit for repairs. Can you create a plan without refueling and without tyre change?" changeTyres, repairDamage and swapDriver all indicate using a Boolean whether the repsective service will be provided during pitstop. A tyre compound for the new tyres can be supplied with tyreCompound, if a tyre change is requested.
Pitstop Clearance	-	Yes	Yes	"I have changed my mind, the pitstop is no longer needed."
Damage Impact Recalculation	-	Yes	No	"Can you recalculate the time loss caused by the damage?"
Damage Reporting	1. [Required] suspensionDamage 2. [Required] bodyworkDamage 3. [Required] engineDamage	No	Yes	Typically activated when new damage is detected in the telemetry data. There is an event available, that signals new damage. The parameters accept Boolean values to indicate, whether this type of damage is to be reported.
Pressure Loss Warning	1. [Required] tyre 2. [Required] lostPressure	No	Yes	Typically activated when a pressure loss has been detected in the telemetry data. There is an event available, that signals pressure loss. tyre must be one of "FL", "FR", "RL" and "RR" and lostPressure must be the amount of lost pressure in PSI.
Weather Reporting (1)	1. [Required] weather 2. [Required] minutes 3. [Required] impactsStrategy	No	Yes	Typically activated when an upcoming weather change is detected in the telemetry data. There is an event available, that signals a change in the weather forecast. weather must be one of "Dry", "Drizzle", "LightRain", "MediumRain", "HeavyRain" and "Thunderstorm". minutes specify the time, when the new weather will arrive and impactsStrategy accepts a Boolean that indicates, whether a tyre change might be beneficial.

Notes

1. Not available, when the Race Strategist is active.

Events

Event	Parameter(s)	Description
Fuel Low	1. [Required] remainingFuel 2. [Required] remainingLaps	When the car is running low on fuel, this event is signalled.
Damage Collected	1. [Required] suspensionDamage 2. [Required] bodyworkDamage 3. [Required] engineDamage	This event is signalled, if new damage is detected for a part of the car. The parameters accept Boolean values to indicate where the damage occured.
Pressure Loss	1. [Required] tyre 2. [Required] lostPressure	This event is signalled, if a loss of ressure has been detected in a tyre. tyre will be one of "FL", "FR", "RL" and "RR" and lostPressure will be the amount of lost pressure in PSI.
Weather Update (1)	1. [Required] weather 2. [Required] minutes 3. [Required] impactsStrategy 4. [Optional] tyreCompound	Indicates an upcoming weather change. weather must be one of "Dry", "Drizzle", "LightRain", "MediumRain", "HeavyRain" and "Thunderstorm". minutes specify the time, when the new weather will arrive and impactsStrategy accepts a Boolean that indicates, whether a tyre change might be beneficial. If tyreCompound has been supplied, this indicates that a pitstop for tyre change should be planned.
Rain Started	-	This event is signalled, if rain just started.
Rain Stopped	-	This event is signalled, if rain just stopped.

Notes

1. Not available, when the Race Strategist is active.

Race Strategist

Actions

Action	Parameter(s)	Conversation	Reasoning	Command(s) / Description
Pitstop Simulation	[Optional] lap	Yes	No	"What do you think? Can we go for an undercut in lap 7?" or "Can we get some clean air when we pit earlier?"
Pitstop Planning	[Optional] lap	Yes	Yes	"Can you ask the Engineer to create a pitstop plan for the next lap?"
Pitstop Announcement	[Required] lap	No	Yes	Announces an upcoming pitstop according to the currently active strategy.
Strategy Recalculation	-	Yes	No	"Can you check whether we can skip the last pitstop, if we use a fuel saving map from now on?"
Weather Reporting	1. [Required] weather 2. [Required] minutes 3. [Required] impactsStrategy	No	Yes	Typically activated when an upcoming weather change is detected in the telemetry data. There is an event available, that signals a change in the weather forecast. weather must be one of "Dry", "Drizzle", "LightRain", "MediumRain", "HeavyRain" and "Thunderstorm". minutes specify the time, when the new weather will arrive and impactsStrategy accepts a Boolean that indicates, whether a tyre change might be beneficial.

Events

Event	Parameter(s)	Description
Pitstop Upcoming	[Required] plannedLap	This event is triggered when the next pitstop according to the currently active strategy is upcoming. plannedLap accepts an Integer.
Weather Update	1. [Required] weather 2. [Required] minutes 3. [Required] impactsStrategy 4. [Optional] tyreCompound	Indicates an upcoming weather change. weather must be one of "Dry", "Drizzle", "LightRain", "MediumRain", "HeavyRain" and "Thunderstorm". minutes specify the time, when the new weather will arrive and impactsStrategy accepts a Boolean that indicates, whether a tyre change might be beneficial. If tyreCompound has been supplied, this indicates that a pitstop for tyre change should be planned.
Rain Started	-	This event is signalled, if rain just started.
Rain Stopped	-	This event is signalled, if rain just stopped.
Position Lost	1. [Required] previousPosition 2. [Required] currentPosition	This event is signalled, if one or more positions has just been lost. previousPosition and currentPosition inidcate the position before and after the overtake.
Position Gained	1. [Required] previousPosition 2. [Required] currentPosition	This event is signalled, if one or more positions has just been gained. previousPosition and currentPosition inidcate the position before and after the overtake.

Race Spotter

Actions

Action	Parameter(s)	Conversation	Reasoning	Command(s) / Description
Reset Deltas	-	Yes	No	"Can you reset the delta information for all cars?"
Reset Accident Detection	-	Yes	No	"There are false positives for accidents and slow cars on the track. Please correct that."

Events

Event	Parameter(s)	Description
Position Lost	1. [Required] previousPosition 2. [Required] currentPosition	This event is signalled, if one or more positions has just been lost. previousPosition and currentPosition inidcate the position before and after the overtake.
Position Gained	1. [Required] previousPosition 2. [Required] currentPosition	This event is signalled, if one or more positions has just been gained. previousPosition and currentPosition inidcate the position before and after the overtake.

Connecting Events & Actions

As usual, it depends on the capabilities of the LLM, which actions will be called as a result of a given event. Additionally, because of the inherent non-deterministic nature of LLMs, the behaviour may vary between invocations. You have to decide which events you will send to the LLM (i.e. are activated) and which events should be handled by the rule engine (i.e. are deactivated). Anyway, using the predefined events will not result in a very different behaviour than running an Assistant without the Reasoning booster, since in most cases the LLM will decide to connect an event to its natural corresponding action. Example: Fuel Low -> Low Fuel Reporting

As LLMs become smarter, we will be able to rely more and more on the intelligence and the domain specific knowledge of the LLM. I have run some tests using some of the current high end models (GPT 4o, Claude 3.5 Sonnet, ...) by disabling all events and running only one very simple event:

The results are very promising, but these models are still very expensive. If you want to use this approach, make sure, that you leave all predefined events "Active" but set their type to "Event Disabled", because otherwise they will be handled by the rule engine and you might end up with duplicate behaviour, for example a pitstop being planned twice.