Add optional parameters to scenarios

[geegaz]

To be able to make more varied scenarios, here's a list of existing parameters that should be exposed in scenario files as optional parameters:

For Belts (accessible after initialization through input_belt and output_belt in Machines):

• size (default = number of tiles, defined by the environment)

For InputMachines

• infinite (default = false)
• create_order (default = 0, values = 0,1,2) - invalid values are treated as 0
• create_time (default = 0, values = 0,1) - invalid values are treated as 0
• time_step (default = 15)

[geegaz]

Thanks @Yirmandias for the suggestion !

For Robots

• max_battery (default = 10)
• battery_drain_rate (default = 0.1)
• battery_charge_rate (default = 0.8)

[geegaz]

OutputMachines have an optional parameter that could be used in scenarios too

For OutputMachines

• time_step (default = 20)