lotus-shared 0.5.1

Shared code for LOTUS scripts and engine.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

#[cfg(feature = "bevy")]
use bevy::{
    prelude::{ReflectResource, Resource},
    reflect::Reflect,
};

#[cfg_attr(feature = "bevy", derive(Resource, Reflect, Debug, Clone, Copy))]
#[cfg_attr(feature = "bevy", reflect(Resource))]
pub struct GameTime {
    #[cfg(feature = "engine")]
    speed_multiplier: f32,
    time_unix_micros: i64,
}

impl GameTime {
    pub fn time_unix_micros(&self) -> i64 {
        self.time_unix_micros
    }
}

#[cfg(feature = "engine")]
mod _engine {
    use time::PrimitiveDateTime;

    use super::*;

    const MICROS_IN_DAY: i64 = 86_400_000_000;

    impl GameTime {
        pub fn increase(&mut self, seconds: f32) {
            self.time_unix_micros += (seconds * 1_000_000.0 * self.speed_multiplier).round() as i64;
        }

        pub fn days_since_vernal_equinox_24(&self) -> f64 {
            let diff = self.time_unix_micros - 1_710_975_600_000_000;
            diff as f64 / 86_400_000_000.0
        }

        pub fn set_time(&mut self, time: PrimitiveDateTime) {
            self.time_unix_micros = (time.assume_utc().unix_timestamp_nanos() / 1_000) as i64;
        }

        pub fn speed_multiplier(&self) -> f32 {
            self.speed_multiplier
        }

        pub fn set_speed_multiplier(&mut self, speed_multiplier: f32) {
            self.speed_multiplier = speed_multiplier;
        }

        /// Returns the time of day normalized to 0-1
        pub fn day_time(&self) -> f32 {
            (self.time_unix_micros % MICROS_IN_DAY) as f32 / MICROS_IN_DAY as f32
        }

        /// Returns the day of the week, 0 = Monday
        pub fn day_of_week(&self) -> u8 {
            ((self.time_unix_micros / MICROS_IN_DAY + 3) % 7) as u8
        }
    }
}

#[cfg(feature = "time")]
mod _time {
    use time::{Date, Duration, PrimitiveDateTime, Time};

    use super::*;

    impl GameTime {
        pub fn primitive_date_time(&self) -> PrimitiveDateTime {
            PrimitiveDateTime::new(
                Date::from_calendar_date(1970, time::Month::January, 1).unwrap(),
                Time::from_hms(0, 0, 0).unwrap(),
            ) + Duration::new(
                self.time_unix_micros / 1_000_000,
                (self.time_unix_micros % 1_000_000 * 1_000) as i32,
            )
        }

        pub fn from_unix_micros(unix_micros: i64) -> Self {
            Self {
                #[cfg(feature = "engine")]
                speed_multiplier: 1.0,
                time_unix_micros: unix_micros,
            }
        }
    }
}

#[cfg(feature = "engine")]
impl Default for GameTime {
    fn default() -> Self {
        Self {
            speed_multiplier: 1.0,
            time_unix_micros: 1_746_957_625_000_000,
        }
    }
}