mirror of
https://github.com/Karaka-Management/cOMS.git
synced 2026-01-11 11:18:40 +00:00
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
#ifndef TOS_ENVIRONMENT_GLOBE_H
|
|
#define TOS_ENVIRONMENT_GLOBE_H
|
|
|
|
#include "../stdlib/Types.h"
|
|
#include "../utils/MathUtils.h"
|
|
#include <math.h>
|
|
|
|
/**
|
|
* Calculates the time of the day
|
|
*
|
|
* @param f64 time Can be any reference value, as long as it increments every second
|
|
* @param f32 day_length The length of a day in seconds
|
|
*
|
|
* @return f32 A day time ranging from 0.0 to 1.0
|
|
*/
|
|
f32 time_of_day(f64 time, f32 day_length) {
|
|
f64 t = time;
|
|
t /= day_length;
|
|
t -= (int32) t;
|
|
|
|
return (f32) t;
|
|
}
|
|
|
|
/**
|
|
* Calculates a daylight intensity based on the time of the day
|
|
*
|
|
* @param f64 time Can be any reference value, as long as it increments every second
|
|
* @param f32 day_length The length of a day in seconds
|
|
*
|
|
* @return f32 Light intensity
|
|
*/
|
|
f32 daylight_get(f64 time, f32 day_length) {
|
|
f32 timer = time_of_day(time, day_length);
|
|
|
|
if (timer < 0.5f) {
|
|
f32 t = (timer - 0.25f) * 100.0f;
|
|
|
|
return 1.0f / (1.0f + powf(2.0f, -t));
|
|
}
|
|
|
|
f32 t = (timer - 0.85f) * 100.0f;
|
|
|
|
return 1.0f - 1.0f / (1.0f + powf(2.0f, -t));
|
|
}
|
|
|
|
void sun_position_get(v3_f32* sun_position, f32 time, f32 radius, f32 day_duration) {
|
|
f32 angle = (time / day_duration) * 2.0f * OMS_PI;
|
|
|
|
sun_position->x = radius * cosf(angle);
|
|
sun_position->y = radius * sinf(angle);
|
|
sun_position->z = 0.0f;
|
|
}
|
|
|
|
#endif |