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//! A configuration is the special rules defined by the game host in a world.
//!
//! For example, each texture is a configuration, and each liquid type is a configuration.
//!
//! Configurations are stored as resources in the Legion.
//! They are referenced using IDs.

use std::f64::consts::PI;

use super::time;
use crate::{units, SetupEcs};

/// Scalar configuration values
pub struct Scalar {
    /// The angle the sun moves per tick
    pub sun_speed:         time::Rate<f64>,
    /// The threshold below which liquid storages are considered zero.
    pub negligible_volume: units::LiquidVolume,
}

impl Default for Scalar {
    fn default() -> Self {
        Self {
            sun_speed:         time::Rate(PI * 2. / 300. / 10.), // 5 minutes = 1 year
            negligible_volume: units::LiquidVolume(1.),
        }
    }
}

/// Initializes ECS
pub fn setup_ecs(setup: SetupEcs) -> SetupEcs { setup }