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# Factorio Runtime Docs Version 2.0.7

## Class LuaBurnerPrototype changed

Prototype of a burner energy source.

## Members

emissions_per_joule new | :: R dictionary[string → double] | The table of emissions of this energy source in `pollution/Joule`, indexed by pollutant type. [...]
The table of emissions of this energy source in `pollution/Joule`, indexed by pollutant type. [...]
render_no_network_icon | :: R boolean |
render_no_power_icon | :: R boolean |
effectivity | :: R double |
fuel_inventory_size | :: R uint |
burnt_inventory_size | :: R uint |
smoke | :: R array[SmokeSource] ? | The smoke sources for this burner prototype.
The smoke sources for this burner prototype.
light_flicker | :: R table ? | The light flicker definition for this burner prototype.
The light flicker definition for this burner prototype.
fuel_categories | :: R dictionary[string → `true`] | The value in the dictionary is meaningless and exists just to allow for easy lookup.
The value in the dictionary is meaningless and exists just to allow for easy lookup.
valid | :: R boolean | Is this object valid? [...]
Is this object valid? [...]
object_name | :: R string | The class name of this object. [...]
The class name of this object. [...]

## Attributes

### emissions_per_joule :: Read dictionary[string → double] new

The table of emissions of this energy source in `pollution/Joule`, indexed by pollutant type. Multiplying it by energy consumption in `Watt` gives `pollution/second`.

### render_no_network_icon :: Read boolean

### render_no_power_icon :: Read boolean

### effectivity :: Read double

### fuel_inventory_size :: Read uint

### burnt_inventory_size :: Read uint

### smoke :: Read array[SmokeSource] ?

The smoke sources for this burner prototype.

### light_flicker :: Read table ?

The light flicker definition for this burner prototype.

#### Table fields

minimum_intensity | :: float |
maximum_intensity | :: float |
derivation_change_frequency | :: float |
derivation_change_deviation | :: float |
border_fix_speed | :: float |
minimum_light_size | :: float |
light_intensity_to_size_coefficient | :: float |
color | :: Color |

### fuel_categories :: Read dictionary[string → `true`]

The value in the dictionary is meaningless and exists just to allow for easy lookup.

### valid :: Read boolean

Is this object valid? This Lua object holds a reference to an object within the game engine. It is possible that the game-engine object is removed whilst a mod still holds the corresponding Lua object. If that happens, the object becomes invalid, i.e. this attribute will be `false`. Mods are advised to check for object validity if any change to the game state might have occurred between the creation of the Lua object and its access.

### object_name :: Read string

The class name of this object. Available even when `valid` is false. For LuaStruct objects it may also be suffixed with a dotted path to a member of the struct.