question about handling

[gozza]

Have anyone tested handling values ? I mean TD of 4 stars and CD of 4 stars usually produce 70% chassis handling, 3 stars both usually about 56%... Know there is small bonus based on championsip position, but what values you get from lets say TD 3 stars and CD 5 stars, or vice versa ?

[jose21crisis]

OK, so if I understand things correctly, there's a formula for this. The formula is this.
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + CarEfficiency0To20 - Random0To10
That formula applies to the player. Basically, if you have both CD and TD at level 4, you would have a minimum of 50% (15% CD + 45% TD - 10% RNG) and a maximum of 80% (15% CD + 45% TD + 20% Car Design Efficiency - 0% RNG). You can toy around with this formula to figure out how much you'd get for any combination of TD and CD. For the case you mentioned, 3* TD and 5* CD for example, you'd have a minimum of 40% and a maximum of 70%.
Then there's the AI formula, which is a bit different:
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + (31 - ChampionshipPosition1To11 - Random0To20)
They don't have a car design efficiency, so that's replaced by the effect of championship position and some more RNG. For 4* CD and TD for example, they'd have a minimum of 60% and a maximum of 90%.

[gozza]

Feb 12, 2024 22:55:09 GMT 2 jose21crisis said:

OK, so if I understand things correctly, there's a formula for this. The formula is this.
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + CarEfficiency0To20 - Random0To10
That formula applies to the player. Basically, if you have both CD and TD at level 4, you would have a minimum of 50% (15% CD + 45% TD - 10% RNG) and a maximum of 80% (15% CD + 45% TD + 20% Car Design Efficiency - 0% RNG). You can toy around with this formula to figure out how much you'd get for any combination of TD and CD. For the case you mentioned, 3* TD and 5* CD for example, you'd have a minimum of 40% and a maximum of 70%.
Then there's the AI formula, which is a bit different:
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + (31 - ChampionshipPosition1To11 - Random0To20)
They don't have a car design efficiency, so that's replaced by the effect of championship position and some more RNG. For 4* CD and TD for example, they'd have a minimum of 60% and a maximum of 90%.

Thank you very much !

[alben]

Feb 12, 2024 22:55:09 GMT 2 jose21crisis said:

OK, so if I understand things correctly, there's a formula for this. The formula is this.
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + CarEfficiency0To20 - Random0To10
That formula applies to the player. Basically, if you have both CD and TD at level 4, you would have a minimum of 50% (15% CD + 45% TD - 10% RNG) and a maximum of 80% (15% CD + 45% TD + 20% Car Design Efficiency - 0% RNG). You can toy around with this formula to figure out how much you'd get for any combination of TD and CD. For the case you mentioned, 3* TD and 5* CD for example, you'd have a minimum of 40% and a maximum of 70%.
Then there's the AI formula, which is a bit different:
(DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + (31 - ChampionshipPosition1To11 - Random0To20)
They don't have a car design efficiency, so that's replaced by the effect of championship position and some more RNG. For 4* CD and TD for example, they'd have a minimum of 60% and a maximum of 90%.

Great, anyway we can modify these values or formulas? Thx.

[veedub]

alben Unfortunately the new car handling formula is hard coded into the GPW Edit program. How it works could be changed by a programmer but it is not easy, as it is all written in assembly code. Is there anything that you don't like about the new formula? While it is not perfect, it is a significant improvement on the formula that the game came out with. If I remember correctly, I think GPW Edit allows you to choose the basic formula or the advanced formula.

[alben]

Mar 17, 2024 12:37:38 GMT 2 veedub said:

alben Unfortunately the new car handling formula is hard coded into the GPW Edit program. How it works could be changed by a programmer but it is not easy, as it is all written in assembly code. Is there anything that you don't like about the new formula? While it is not perfect, it is a significant improvement on the formula that the game came out with. If I remember correctly, I think GPW Edit allows you to choose the basic formula or the advanced formula.

Thx veedub. It's all good, i'm just being curious. I don't know where is the basic formula or the advanced formula, is that Chassis handling - Use original 1998 season values?

also would you be willing to put up a tutorial on how to use the track editor, is it possible to add more tracks to the game? thank you.    

[veedub]

No worries alben . I found some old documentation that should explain the old and new formulas used to calculate the car handling percentage.

If I remember correctly, I believe the old and new formulas are available in GPW Edit v1.0 or v1.1.

Original calculation formula (official version v1.01b)

For player teams:
- Player teams multiply the *designers* skill level, minus one, by 20%
- e.g. Designer of 4 out of 5 skill rating = handling percentage of 60% (20 * (4 - 1))
- Player teams add 1% handling for every 5% of design efficiency achieved
- e.g. Design efficiency achieved of 68% = additional handling percentage of 13% (1 * (68 / 5)).
- e.g. Final design percentage = 73% (60 + 13).

For AI teams:
- AI teams multiply the *engineers* skill level, minus one, by 20%
- e.g. Engineer of 4 out of 5 skill rating = handling percentage of 60% (20 * (4 - 1))
- AI teams get a handling bonus by subtracting the championship position achieved from the previous year from 21
- e.g. Championship Position of 5th = 16% handling bonus (21 - 5).
- AI teams get a random factor of 0-4% subtracted from the handling bonus.
- e.g. A random factor of 3% = 13% handling bonus (16 - 3).
- e.g. Final design percentage = 73% (60 + 13).

Actual race performance for both player and AI teams rounds down to the nearest 10%.
- e.g. Final design percentage of 73% would only have the car handling performance of 70%

I then came along and introduced a patch... 

Custom calculation formula (unofficial v1.02b)

* Formulas have been updated so that both the player and computer/AI teams use the skill level of the Technical Director.
* This also helps to explain why the base game has a significant salary gap between Chief Designers and Technical Directors.
* The skill level of the Chief Designer will still play an important role, as it is used to generate technology ratings each new season (e.g. brakes, electronics).

And then we introduced further improvements, as mentioned earlier in this thread.

Custom calculation formula (unofficial v1.03b/v1.03 and GPW Edit v1.0/1.1)

* Formulas have been updated to use the combined skill from both the Chief Designer (25%) and Technical Director (75%), and also add some random factors to the calculation.

PlayerHandlingPercentage = (DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + CarEfficiency0To20 - Random0To10

AiHandlingPercentage = (DesignerSkill - 1) * 5 + (EngineerSkill - 1) * 15 + (31 - ChampionshipPosition1To11 - Random0To20)

* Some code optimization was required to free up code space for new logic.
* As a result, the first 40% of design efficiency achieved is now calculated in 10% steps, adding 2% handling at a time (not really a difference, it's just slightly less rewarding for designs with poor design efficiency)
* ChampionshipPosition1To11 refers to the finishing position in the constructors championship at the end of the previous year (e.g. 1999 designs are calculated on 1997 results).

Actual race performance for both player and AI teams no longer rounds down to the nearest 10%.
- e.g. Final design percentage of 73% would actually have the car handling performance of 73% on the track, so that designs make an immediate difference.

Regarding the track editor, there are a bunch of magic buttons to press to get things to work.  It's not particularly easy to use but you can start changing the lines and speed of the cars etc.

If I find the documentation I will let you know but I think I lost it when gpracegames went down.