nightshade-api 0.56.0

Procedural high level API for the nightshade game engine
Documentation 
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//! Every camera mode. Press 1-6 to switch between orbit, fly, first-person,
//! third-person, fixed, and orthographic cameras; the HUD shows live camera state.

use nightshade_api::prelude::*;

struct State {
    target: Entity,
    label: Entity,
}

fn main() {
    run(
        |world| {
            set_background(world, Background::Sky);
            spawn_floor(world, 20.0);
            for index in 0..6 {
                let cube = spawn_cube(world, vec3(index as f32 * 2.0 - 5.0, 0.5, -3.0));
                set_color(world, cube, [GOLD, TEAL, PURPLE, RED, GREEN, BLUE][index]);
            }
            let target = spawn_sphere(world, vec3(0.0, 1.0, 0.0));
            set_color(world, target, ORANGE);

            let focus = position(world, target);
            orbit_camera(world, focus, 10.0);
            set_orbit_view(world, focus, 10.0, 0.6, 0.4);
            set_orbit_zoom(world, true);

            let label = spawn_text(world, "1 orbit", ScreenAnchor::TopLeft);
            State { target, label }
        },
        |world, state| {
            rotate(world, state.target, Vec3::y(), delta_time(world));
            let focus = position(world, state.target);

            if key_pressed(world, KeyCode::Digit1) {
                orbit_camera(world, focus, 10.0);
                set_orbit_focus(world, focus);
                set_field_of_view(world, 60.0);
            } else if key_pressed(world, KeyCode::Digit2) {
                fly_camera(world, vec3(0.0, 4.0, 10.0));
                set_perspective(world, 70.0);
            } else if key_pressed(world, KeyCode::Digit3) {
                first_person(world, vec3(0.0, 1.6, 8.0));
            } else if key_pressed(world, KeyCode::Digit4) {
                third_person_camera(world, state.target, 6.0);
            } else if key_pressed(world, KeyCode::Digit5) {
                fixed_camera(world, vec3(8.0, 6.0, 8.0), focus);
                look_at(world, vec3(8.0, 6.0, 8.0), focus);
            } else if key_pressed(world, KeyCode::Digit6) {
                set_orthographic(world, 6.0);
            }

            let camera = camera_position(world);
            let forward = camera_forward(world);
            set_text(
                world,
                state.label,
                &format!(
                    "pos {:.1},{:.1},{:.1}  fwd {:.2},{:.2},{:.2}",
                    camera.x, camera.y, camera.z, forward.x, forward.y, forward.z
                ),
            );
        },
    )
    .unwrap();
}