Ragnarokkr/utils.odin

package main

import "core:math"
import "core:math/linalg"
import rl "vendor:raylib"


angle_cycle :: proc(value, min, max: f32) -> f32 {
    delta := (max - min)
    result := linalg.mod(value - min, delta)
    if result < 0 {
        result += delta
    }

    return min + result
}

angle_rotate :: proc(angle, target, speed: f32) -> f32 {
    diff := angle_cycle(target - angle, -math.PI, math.PI)
    if diff < -speed {return angle - speed}
    if diff > speed {return angle + speed}
    return target
}

get_vec_from_angle :: proc(angle: f32) -> vec3 {
    return rl.Vector3RotateByAxisAngle(vec3right, vec3backward, angle)
}

draw_text_centered :: proc(font: rl.Font, text: cstring, pos: vec2, size: f32, spacing : f32 = 1, color : rl.Color = rl.BLACK) {
    text_size := rl.MeasureTextEx(font, text, size, 1)
    rl.DrawTextPro(font, text, pos, text_size / 2, 0, size, 1, color)
}