flatbox 0.1.0

Rust ECS game engine with editor written in C#
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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

use std::time::Instant;

use anyhow::Result;
use flatbox::{
    core::math::{
        glm, transform::Transform
    }, ecs::{CommandBuffer, Write}, egui, extension::RenderGuiExtension, render::{
        context::*, pbr::{
            camera::{Camera, CameraType}, material::DefaultMaterial, model::Model, texture::Texture
        }
    }, Flatbox
};
use flatbox_assets::resources::Resources;
use flatbox_ecs::{event::{AppExit, Events}, Read, SubWorld};
use flatbox_egui::{backend::EguiBackend, command::DrawEguiCommand};
use flatbox_render::renderer::Renderer;

fn main() {
    Flatbox::init(WindowBuilder {
        title:  "Flatbox basic example",
        width:  800,
        height: 600,
        ..Default::default()
    })
        .add_default_extensions() 
        .add_extension(RenderGuiExtension) 
        .add_setup_system(setup)
        .add_render_system(render)
        .add_system(update)
        .run();
}

fn render(
    display: Read<Display>,
    control_flow: Read<ControlFlow>,
    events: Read<Events>,
    resources: Read<Resources>,
    mut renderer: Write<Renderer>,
){
    let mut egui_backend = resources.get_resource_mut::<EguiBackend>().unwrap();

    let repaint_after = egui_backend.run((*display).clone(), |egui_ctx|{
        egui::SidePanel::left("my_side_panel").show(egui_ctx, |ui| {
            ui.heading("Hello World!");
            if ui.button("Quit").clicked() {
                events.get_handler_mut::<AppExit>().unwrap().send(AppExit);
            }
        });
    });

    if events.get_handler::<AppExit>().unwrap().read().is_some() {
        control_flow.exit();
    } else if repaint_after.is_zero() {
        display.lock().window().request_redraw();
        control_flow.set_poll();
    } else if let Some(repaint_after_instant) = Instant::now().checked_add(repaint_after) {
        control_flow.set_wait_until(repaint_after_instant);
    }

    renderer.execute(&mut DrawEguiCommand::new(&mut egui_backend)).unwrap();
}

fn setup(mut cmd: Write<CommandBuffer>) -> Result<()> {
    cmd.spawn((
        Model::cube(), 
        DefaultMaterial {
            diffuse_map: Texture::new("assets/crate.png", None)?,
            specular_map: Texture::new("assets/crate_spec.png", None)?,
            ..Default::default()
        },
        Transform::new_from_translation(glm::vec3(2.0, 0.0, 0.0)),
    ));

    cmd.spawn((
        Model::cube(), 
        DefaultMaterial {
            diffuse_map: Texture::new("assets/crate.png", None)?,
            specular_map: Texture::new("assets/crate_spec.png", None)?,
            ..Default::default()
        },
        Transform::new_from_translation(glm::vec3(-2.0, 0.0, 0.0)),
    ));

    cmd.spawn((
        Model::cube(), 
        DefaultMaterial {
            diffuse_map: Texture::new("assets/crate.png", None)?,
            specular_map: Texture::new("assets/crate_spec.png", None)?,
            ..Default::default()
        },
        Transform::new_from_translation(glm::vec3(0.0, 0.0, 2.0)),
    ));

    cmd.spawn((
        Model::cube(), 
        DefaultMaterial {
            diffuse_map: Texture::new("assets/crate.png", None)?,
            specular_map: Texture::new("assets/crate_spec.png", None)?,
            ..Default::default()
        },
        Transform::new_from_translation(glm::vec3(0.0, 0.0, -2.0)),
    ));

    cmd.spawn((
        Camera::builder()
            .camera_type(CameraType::FirstPerson)
            .is_active(true)
            .build(),
        Transform {
            translation: glm::vec3(3.0, -3.0, 3.0),
            rotation: glm::safe_quat_look_at(
                &glm::vec3(0.0, 0.0, 0.0), 
                &glm::vec3(3.0, -3.0, 3.0),
                &glm::Vec3::y_axis(), 
                &glm::Vec3::y_axis(),
            ),
            scale: 1.0,
        },
    ));

    Ok(())
}

fn update(events: Read<Events>, cam_world: SubWorld<(&Camera, &mut Transform)>){
    if let Some(WindowEvent::KeyboardInput { input, .. }) = events.get_handler::<WindowEvent>().unwrap().read() {
        for (_, (_, mut t)) in &mut cam_world.query::<(&Camera, &mut Transform)>() {
            match input.virtual_keycode {
                Some(VirtualKeyCode::W) => t.translation.z -= 1.0,
                Some(VirtualKeyCode::S) => t.translation.z += 1.0,
                Some(VirtualKeyCode::A) => t.translation.x -= 1.0,
                Some(VirtualKeyCode::D) => t.translation.x += 1.0,
                _ => {},
            }
        }
    }
}