Factorio Forums

Posted: **Mon Jan 23, 2017 3:04 pm**

very simple code

data.raw["unit-spawner"]["biter-spawner"].max_health = 1000 + (game.evolution_factor * 2000)
data.raw["unit-spawner"]["spitter-spawner"].max_health = 1000 + (game.evolution_factor * 2000)

data.raw.unit["small-biter"].max_health = data.raw.unit["small-biter"].max_health * (1 + game.evolution_factor)
data.raw.unit["medium-biter"].max_health = data.raw.unit["medium-biter"].max_health * (1 + (0.5 * game.evolution_factor))
data.raw.unit["small-spitter"].max_health = data.raw.unit["small-spitter"].max_health * (1 + game.evolution_factor)
data.raw.unit["medium-spitter"].max_health = data.raw.unit["medium-spitter"].max_health * (1 + (0.5 * game.evolution_factor))

data.raw.unit["small-biter"].movement_speed = data.raw.unit["small-biter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["medium-biter"].movement_speed = data.raw.unit["medium-biter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["big-biter"].movement_speed = data.raw.unit["big-biter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["behemoth-biter"].movement_speed = data.raw.unit["behemoth-biter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["small-spitter"].movement_speed = data.raw.unit["small-spitter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["medium-spitter"].movement_speed = data.raw.unit["medium-spitter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["big-spitter"].movement_speed = data.raw.unit["big-spitter"].movement_speed * (1 + (0.5 * game.evolution_factor))
data.raw.unit["behemoth-spitter"].movement_speed = data.raw.unit["behemoth-spitter"].movement_speed * (1 + (0.5 * game.evolution_factor))

and... it displays error(nil value)
how can I solve it?

Posted: **Mon Jan 23, 2017 3:13 pm**

game.evolution_factor doesn't exists whe defining things at the data stage

Posted: **Mon Jan 23, 2017 3:17 pm**

Klonan wrote:game.evolution_factor doesn't exists whe defining things at the data stage

Yes thats what I thought but
when I added
game.evolution_factor = 0, still does not work

Posted: **Mon Jan 23, 2017 3:51 pm**

/odosk/ wrote:
Klonan wrote:game.evolution_factor doesn't exists whe defining things at the data stage
Yes thats what I thought but
when I added
game.evolution_factor = 0, still does not work

"game" doesn't exist during setting up prototypes - the main menu isn't even loaded yet let alone a map loaded.

Posted: **Mon Jan 23, 2017 4:23 pm**

Did you add it as

Code: Select all

game={evolution_factor=0}

?

Also, it tells you more than just "error(nil value)", why are you telling us less?

Posted: **Mon Jan 23, 2017 4:43 pm**

Adil wrote:Did you add it as
Code: Select all
game={evolution_factor=0}
?

Even then what he's trying to do won't work. The purpose of the code is to change the max health and movement speed of enemies at runtime depending on the evolution factor, which is not possible in Factorio. Values in data.raw are only loaded when loading Factorio, you can't change them later during a game.

Posted: **Tue Jan 24, 2017 8:57 am**

Then there is no way to do what I thought?

Posted: **Tue Jan 24, 2017 9:23 am**

What actually did you "thought"?

Posted: **Tue Jan 24, 2017 11:15 am**

It looks like he's trying to change the max health of a biter based on the evolution factor. This is a thing that is currently not possible to do.

There was recently a similar question about increasing the max health of a turret based on kill count, the answer there was the same.

Max health can only be modified during data phase. Evolution factor is a game variable (as is kill count), therefore, one cannot be used to modify the other.

Posted: **Tue Jan 24, 2017 11:50 am**

bobingabout wrote:It looks like he's trying to change the max health of a biter based on the evolution factor. This is a thing that is currently not possible to do.

There was recently a similar question about increasing the max health of a turret based on kill count, the answer there was the same.

Max health can only be modified during data phase. Evolution factor is a game variable (as is kill count), therefore, one cannot be used to modify the other.

But mobs (and turrets) can have some slots for special items, like beacons with modules. It didn't change the entities, but some properties. Not now, but in 0.15 or later.

If it's stuckable, you can add this items every experience and mobs can be changed with it.

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