hello_world/
hello_world.rs

1use micro_games_kit::{
2    assets::{make_directory_database, ShaderAsset},
3    config::Config,
4    context::GameContext,
5    game::{GameInstance, GameState, GameStateChange},
6    third_party::{
7        raui_core::layout::CoordsMappingScaling,
8        raui_immediate_widgets::core::{
9            text_box, Color, TextBoxFont, TextBoxHorizontalAlign, TextBoxProps,
10            TextBoxVerticalAlign,
11        },
12        spitfire_draw::{
13            sprite::{Sprite, SpriteTexture},
14            utils::{Drawable, TextureRef},
15        },
16        spitfire_glow::{
17            graphics::{CameraScaling, Shader},
18            renderer::GlowTextureFiltering,
19        },
20        spitfire_input::{
21            CardinalInputCombinator, InputActionRef, InputConsume, InputMapping, VirtualAction,
22        },
23        vek::Vec2,
24        windowing::event::VirtualKeyCode,
25    },
26    GameLauncher,
27};
28use std::error::Error;
29
30const SPEED: f32 = 100.0;
31
32#[derive(Default)]
33struct Preloader;
34
35impl GameState for Preloader {
36    fn enter(&mut self, context: GameContext) {
37        context.graphics.color = [0.2, 0.2, 0.2, 1.0];
38        context.graphics.main_camera.screen_alignment = 0.5.into();
39        context.graphics.main_camera.scaling = CameraScaling::FitVertical(500.0);
40        context.gui.coords_map_scaling = CoordsMappingScaling::FitVertical(500.0);
41
42        context
43            .assets
44            .spawn(
45                "shader://color",
46                (ShaderAsset::new(
47                    Shader::COLORED_VERTEX_2D,
48                    Shader::PASS_FRAGMENT,
49                ),),
50            )
51            .unwrap();
52        context
53            .assets
54            .spawn(
55                "shader://image",
56                (ShaderAsset::new(
57                    Shader::TEXTURED_VERTEX_2D,
58                    Shader::TEXTURED_FRAGMENT,
59                ),),
60            )
61            .unwrap();
62        context
63            .assets
64            .spawn(
65                "shader://text",
66                (ShaderAsset::new(Shader::TEXT_VERTEX, Shader::TEXT_FRAGMENT),),
67            )
68            .unwrap();
69
70        context.assets.ensure("texture://ferris.png").unwrap();
71
72        context.assets.ensure("font://roboto.ttf").unwrap();
73
74        *context.state_change = GameStateChange::Swap(Box::new(State::default()));
75    }
76}
77
78#[derive(Default)]
79struct State {
80    ferris: Sprite,
81    movement: CardinalInputCombinator,
82    exit: InputActionRef,
83}
84
85impl GameState for State {
86    fn enter(&mut self, context: GameContext) {
87        self.ferris = Sprite::single(SpriteTexture {
88            sampler: "u_image".into(),
89            texture: TextureRef::name("ferris.png"),
90            filtering: GlowTextureFiltering::Linear,
91        })
92        .pivot(0.5.into());
93
94        let move_left = InputActionRef::default();
95        let move_right = InputActionRef::default();
96        let move_up = InputActionRef::default();
97        let move_down = InputActionRef::default();
98        self.movement = CardinalInputCombinator::new(
99            move_left.clone(),
100            move_right.clone(),
101            move_up.clone(),
102            move_down.clone(),
103        );
104        context.input.push_mapping(
105            InputMapping::default()
106                .consume(InputConsume::Hit)
107                .action(
108                    VirtualAction::KeyButton(VirtualKeyCode::A),
109                    move_left.clone(),
110                )
111                .action(
112                    VirtualAction::KeyButton(VirtualKeyCode::D),
113                    move_right.clone(),
114                )
115                .action(VirtualAction::KeyButton(VirtualKeyCode::W), move_up.clone())
116                .action(
117                    VirtualAction::KeyButton(VirtualKeyCode::S),
118                    move_down.clone(),
119                )
120                .action(VirtualAction::KeyButton(VirtualKeyCode::Left), move_left)
121                .action(VirtualAction::KeyButton(VirtualKeyCode::Right), move_right)
122                .action(VirtualAction::KeyButton(VirtualKeyCode::Up), move_up)
123                .action(VirtualAction::KeyButton(VirtualKeyCode::Down), move_down)
124                .action(
125                    VirtualAction::KeyButton(VirtualKeyCode::Escape),
126                    self.exit.clone(),
127                ),
128        );
129    }
130
131    fn exit(&mut self, context: GameContext) {
132        context.input.pop_mapping();
133    }
134
135    fn fixed_update(&mut self, context: GameContext, delta_time: f32) {
136        let movement = Vec2::<f32>::from(self.movement.get());
137        self.ferris.transform.position += movement * SPEED * delta_time;
138
139        if self.exit.get().is_pressed() {
140            *context.state_change = GameStateChange::Pop;
141        }
142    }
143
144    fn draw(&mut self, context: GameContext) {
145        self.ferris.draw(context.draw, context.graphics);
146    }
147
148    fn draw_gui(&mut self, _: GameContext) {
149        text_box(TextBoxProps {
150            text: "Hello, World!".to_owned(),
151            horizontal_align: TextBoxHorizontalAlign::Center,
152            vertical_align: TextBoxVerticalAlign::Bottom,
153            font: TextBoxFont {
154                name: "roboto.ttf".to_owned(),
155                size: 50.0,
156            },
157            color: Color {
158                r: 1.0,
159                g: 1.0,
160                b: 0.0,
161                a: 1.0,
162            },
163            ..Default::default()
164        });
165    }
166}
167
168fn main() -> Result<(), Box<dyn Error>> {
169    GameLauncher::new(GameInstance::new(Preloader).setup_assets(|assets| {
170        *assets = make_directory_database("./resources/").unwrap();
171    }))
172    .title("Hello World!")
173    .config(Config::load_from_file("./resources/GameConfig.toml")?)
174    .run();
175    Ok(())
176}
hello_world/hello_world.rs

hello_world/
hello_world.rs
