Function ascii_forge::math::vec2

source · 
pub fn vec2(x: u16, y: u16) -> Vec2
Expand description

Creates a Vec2 from the given inputs.

Examples found in repository?
examples/space_invaders.rs (line 33)
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285

    pub fn draw_loc(&self) -> Vec2 {
        vec2(self.loc.0.floor() as u16, self.loc.1.floor() as u16)
    }

    pub fn draw(&self, window: &mut Window) {
        render!(window, [
            self.draw_loc() => self.element
        ])
    }

    pub fn alive(&self, window: &Window) -> bool {
        self.loc.1 >= 2.0 && self.loc.1 < (window.size().y - 2) as f32
    }
}

pub struct Player<E: Render> {
    loc: Vec2,
    element: E,
    input: i32,
}

impl<E: Render> Player<E> {
    pub fn new(window: &Window, element: E) -> Self {
        Self {
            loc: vec2(window.size().x / 2, window.size().y - 3),
            input: 0,
            element,
        }
    }

    pub fn draw(&self, window: &mut Window) {
        render!(window, [
            self.loc => self.element
        ])
    }

    pub fn update(&mut self, window: &mut Window) {
        if window.key(KeyEvent::new_with_kind(
            KeyCode::Right,
            KeyModifiers::NONE,
            KeyEventKind::Press,
        )) {
            self.input = 1;
        } else if window.key(KeyEvent::new_with_kind(
            KeyCode::Right,
            KeyModifiers::NONE,
            KeyEventKind::Release,
        )) {
            self.input = self.input.min(0);
        }
        if window.key(KeyEvent::new_with_kind(
            KeyCode::Left,
            KeyModifiers::NONE,
            KeyEventKind::Press,
        )) {
            self.input = -1;
        } else if window.key(KeyEvent::new_with_kind(
            KeyCode::Left,
            KeyModifiers::NONE,
            KeyEventKind::Release,
        )) {
            self.input = self.input.max(0);
        }

        self.loc.x = (self.loc.x as i32 + self.input).clamp(0, window.size().x as i32) as u16;
    }

    pub fn hit<R: Render>(&mut self, projectiles: &[Projectile<R>]) -> bool {
        projectiles.iter().any(|x| x.draw_loc() == self.loc)
    }
}

pub struct Enemy<E: Render> {
    loc: Vec2,
    right: bool,
    element: E,
    score: u32,
}

impl<E: Render> Enemy<E> {
    pub fn new(loc: Vec2, element: E, score: u32) -> Self {
        Self {
            loc,
            right: true,
            element,
            score,
        }
    }

    pub fn draw(&mut self, window: &mut Window) {
        render!(
            window, [
                self.loc => self.element
            ]
        );
    }

    pub fn hit<R: Render>(&mut self, projectiles: &[Projectile<R>]) -> bool {
        projectiles.iter().any(|x| {
            let loc = x.draw_loc();
            loc.y == self.loc.y && ((loc.x)..=(loc.x + 2)).contains(&self.loc.x)
        })
    }

    pub fn enemy_move(&mut self, window: &Window) -> bool {
        if self.loc.y >= window.size().y - 4 {
            true
        } else {
            match self.right {
                true => {
                    self.loc.x += 1;
                    if self.loc.x >= window.size().x {
                        self.right = false;
                        self.loc.y += 1;
                    }
                }
                false => {
                    self.loc.x -= 1;
                    if self.loc.x == 0 {
                        self.right = true;
                        self.loc.y += 1;
                    }
                }
            }

            false
        }
    }
}

pub fn main() -> io::Result<()> {
    // Create the window, and ask the engine to catch a panic
    let mut window = Window::init()?;
    handle_panics();

    // Run the application
    // Store the result so restore happens no matter what.
    let result = app(&mut window);

    // Restore the previous screen on the terminal
    // Since a print statement will come after this, we want to restore the window.
    window.restore()?;

    // Now check if error
    let result = result?;

    // Print Exit Message
    println!("{}", result);
    Ok(())
}

pub fn app(window: &mut Window) -> io::Result<String> {
    let mut score = 0;
    let mut player = Player::new(window, 'W'.green());

    let mut projectiles = vec![];

    let mut enemies = vec![];

    let mut delta = Duration::ZERO;

    let mut spawner = Duration::from_millis(800);

    let mut move_timer = Duration::from_millis(200);

    let mut shoot_timer = Duration::from_millis(500);

    let info_text = Buffer::sized_element("Press C-q to quit");

    // Main Game Loop
    loop {
        let start = SystemTime::now();
        // update the window, without blocking the screen
        window.update(Duration::from_secs_f64(1.0 / 60.0))?;

        if window.code(KeyCode::Char(' ')) {
            projectiles.push(Projectile::new(
                vec2(player.loc.x - 1, player.loc.y - 1),
                -0.3,
                "|||".green(),
            ))
        }

        // Render and update projectiles
        projectiles.retain(|x| x.alive(window));

        projectiles.iter_mut().for_each(|x| {
            x.update();
            x.draw(window);
        });

        // Render and update the player.
        player.update(window);
        player.draw(window);

        match spawner.checked_sub(delta) {
            Some(s) => spawner = s,
            None => {
                enemies.push(Enemy::new(vec2(0, 3), 'M'.red(), 10));
                spawner = Duration::from_secs(2);
            }
        }

        match move_timer.checked_sub(delta) {
            Some(m) => move_timer = m,
            None => {
                if enemies.iter_mut().any(|x| x.enemy_move(window)) {
                    return Ok(format!("Game Over\nScore was: {}", score));
                }
                move_timer = Duration::from_millis(200);
            }
        }

        if player.hit(&projectiles) {
            return Ok(format!("Game Over\nScore was: {}", score));
        }

        match shoot_timer.checked_sub(delta) {
            Some(s) => shoot_timer = s,
            None => {
                enemies.iter_mut().for_each(|x| {
                    projectiles.push(Projectile::new(vec2(x.loc.x, x.loc.y + 1), 0.3, "|".red()))
                });
                shoot_timer = Duration::from_millis(500);
            }
        }

        enemies.retain_mut(|x| {
            if x.hit(&projectiles) {
                score += x.score;
                false
            } else {
                true
            }
        });

        enemies.iter_mut().for_each(|x| x.draw(window));

        render!(
            window, [
                vec2(0, 0) => format!("Score: {}", score),
                vec2(window.size().x - info_text.size().x, 0) => info_text
            ]
        );

        if window.key(KeyEvent::new(KeyCode::Char('c'), KeyModifiers::CONTROL)) {
            break;
        }

        delta = SystemTime::now().duration_since(start).unwrap();
    }

    Ok("Game Exited".to_string())
}
More examples
Hide additional examples
examples/confirmation.rs (line 8)
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

pub fn confirmation() -> io::Result<bool> {
    let mut window = Window::init_inline(1)?;

    loop {
        render!(window, [vec2(0, 0) => "Are You Sure? (`Y` / `N`)"]);

        if window.code(KeyCode::Char('y')) || window.code(KeyCode::Char('Y')) {
            return Ok(true);
        }
        if window.code(KeyCode::Char('n')) || window.code(KeyCode::Char('N')) {
            return Ok(false);
        }

        // Update the window
        window.update(Duration::from_millis(1000))?;
    }
}
examples/event_visualizer.rs (line 24)
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

fn main() -> Result<(), Box<dyn Error>> {
    let mut event = Event::FocusGained;
    let mut window = Window::init()?;

    if !window.supports().keyboard() {
        window.restore()?;
        eprintln!("This game does not support this terminal.\nIf Curious, look up terminals that support the kitty keyboard protocol");
        return Err("Terminal Unsupported".into());
    }

    loop {
        window.update(Duration::ZERO)?;

        if let Some(new_event) = window.event() {
            event = new_event.clone();
        }

        render!(
            window, [
                vec2(0, 20) => "To Quit, Press Ctrl + C".red(),
                vec2(0, 0) => format!("{:#?}", event).replace('\t', "   "),
            ]
        );

        if window.key(KeyEvent::new(KeyCode::Char('c'), KeyModifiers::CONTROL)) {
            break;
        }
    }

    Ok(())
}
examples/simple.rs (line 19)
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

fn main() -> io::Result<()> {
    // Will init the window for you, handling all required procedures.
    let mut window = Window::init()?;

    // Ask the system to handle panics for us.
    handle_panics();

    loop {
        // Ask the window to draw, handle events, and fix sizing issues.
        // Duration is the time for which to poll events before re-rendering.
        window.update(Duration::from_millis(200))?;

        // Render elements to the window
        render!(window, [
            vec2(0, 0) => "Hello World!",
            vec2(0, 1) => "Press `Enter` to exit!".red(),
        ]);

        // Check if the Enter Key was pressed, and exit the app if it was.
        if window.code(KeyCode::Enter) {
            break;
        }
    }

    // Restore the window, enabling the window to function normally again
    // If nothing will be run after this, once the window is dropped, this will be run implicitly.
    window.restore()
}
examples/inline.rs (line 34)
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

fn progress_bar() -> io::Result<()> {
    let mut window = Window::init_inline(2)?;

    let timer = SystemTime::now();
    let duration = Duration::from_secs(3);

    // The Inline Render Loop
    loop {
        // Render's the Window and captures events
        window.update(Duration::ZERO)?;

        let amount_done = SystemTime::now().duration_since(timer).unwrap();

        let percent = amount_done.as_secs_f64() / duration.as_secs_f64();

        if percent >= 1.0 {
            break;
        }

        let x = (window.size().x as f64 * percent).round() as u16;

        // Create the progress bar text
        let text_green = "|".repeat(x as usize).green();
        let text_red = "|".repeat((window.size().x - x) as usize).red();

        // Render the Progress Bar
        render!(window, [
            vec2(0, 1) => text_green,
            vec2(x, 1) => text_red,
            vec2(0, 0) => "Progress"
        ]);

        // End the loop if key is pressed early
        if window.key(KeyEvent::new(KeyCode::Char('c'), KeyModifiers::CONTROL)) {
            break;
        }
    }

    window.restore()
}