tmaze 1.17.0

Simple multiplatform maze solving game for terminal written entirely in Rust
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
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

use cmaze::dims::*;

use substring::Substring as _;

use crate::{
    helpers::box_center,
    renderer::{drawable::Drawable, Frame},
    settings::theme::{Style, ThemeResolver},
};

use super::draw_box;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct Rect {
    pub start: Dims,
    pub end: Dims,
}

impl Rect {
    pub fn new(start: Dims, end: Dims) -> Self {
        Self { start, end }
    }

    pub fn sized_at(start: Dims, size: Dims) -> Self {
        Self::new(start, Dims(start.0 + size.0, start.1 + size.1) - Dims(1, 1))
    }

    pub fn sized(size: Dims) -> Self {
        Self::sized_at(Dims(0, 0), size)
    }

    pub fn size(&self) -> Dims {
        Dims(self.end.0 - self.start.0, self.end.1 - self.start.1) + Dims(1, 1)
    }

    pub fn contains(&self, pos: Dims) -> bool {
        pos.0 >= self.start.0 && pos.0 <= self.end.0 && pos.1 >= self.start.1 && pos.1 <= self.end.1
    }

    // TODO: make it generic over `Borrow`
    pub fn trim_absolute<'a>(
        &'a self,
        text: &'a impl AsRef<str>,
        mut pos: Dims,
    ) -> (&'a str, Dims) {
        let mut text = text.as_ref();
        let size = self.size();

        if pos.1 < self.start.1 || pos.1 > self.end.1 {
            return ("", pos);
        }

        if pos.0 < self.start.0 {
            let offset = self.start.0 - pos.0;
            text = text.substring(offset as usize, text.chars().count());
            pos = Dims(self.start.0, pos.1);
        }

        if text.chars().count() as i32 + pos.0 > self.end.0 {
            let x = size.0 - (pos.0 - self.start.0);
            let x = x.max(0) as usize;
            text = text.substring(0, x);
        }

        (text, pos)
    }

    pub fn trim_relative<'a>(&'a self, text: &'a impl AsRef<str>, pos: Dims) -> (&'a str, Dims) {
        let (text, pos) = self.trim_absolute(text, pos + self.start);
        (text, pos - self.start)
    }
}

impl Rect {
    pub fn centered(&self, inner: Dims) -> Self {
        let pos = box_center(self.start, self.end, inner);
        Self::sized_at(pos, inner)
    }

    pub fn centered_x(&self, inner: Dims) -> Self {
        let pos = Dims(self.start.0 + (self.size().0 - inner.0) / 2, self.start.1);
        Self::sized_at(pos, inner)
    }

    pub fn centered_y(&self, inner: Dims) -> Self {
        let pos = Dims(self.start.0, self.start.1 + (self.size().1 - inner.1) / 2);
        Self::sized_at(pos, inner)
    }

    pub fn margin(&self, margin: Dims) -> Self {
        Self {
            start: self.start + margin,
            end: self.end - margin,
        }
    }

    pub fn offset(&self, offset: Dims) -> Self {
        Self {
            start: self.start + offset,
            end: self.end + offset,
        }
    }
}

impl Rect {
    pub fn split_x(&self, ratio: Offset) -> (Self, Self) {
        let chars = ratio.to_abs(self.size().0);
        let left = Rect::sized_at(self.start, Dims(chars, self.size().1));
        let right = Rect::sized_at(
            Dims(self.start.0 + chars, self.start.1),
            Dims(self.size().0 - chars, self.size().1),
        );
        (left, right)
    }

    pub fn split_x_end(&self, ratio: Offset) -> (Self, Self) {
        let chars = self.size().0 - ratio.to_abs(self.size().0);
        let left = Rect::sized_at(self.start, Dims(chars, self.size().1));
        let right = Rect::sized_at(
            Dims(self.start.0 + chars, self.start.1),
            Dims(self.size().0 - chars, self.size().1),
        );
        (left, right)
    }

    pub fn split_y(&self, ratio: Offset) -> (Self, Self) {
        let chars = ratio.to_abs(self.size().1);
        let top = Rect::sized_at(self.start, Dims(self.size().0, chars));
        let bottom = Rect::sized_at(
            Dims(self.start.0, self.start.1 + chars),
            Dims(self.size().0, self.size().1 - chars),
        );
        (top, bottom)
    }

    pub fn split_y_end(&self, ratio: Offset) -> (Self, Self) {
        let Dims(width, height) = self.size();
        let chars = height - ratio.to_abs(height);

        let top = Rect::sized_at(self.start, Dims(width, chars));
        let bottom = Rect::sized_at(
            Dims(self.start.0, self.start.1 + chars),
            Dims(width, height - chars),
        );
        (top, bottom)
    }
}

impl Rect {
    pub fn render(&self, frame: &mut Frame, style: Style) {
        draw_box(frame, self.start, self.size(), style);
    }
}

impl Drawable<Style> for Rect {
    fn draw(&self, pos: Dims, frame: &mut Frame, style: Style) {
        draw_box(frame, pos + self.start, self.size(), style);
    }
}

pub fn rect_theme_resolver() -> ThemeResolver {
    ThemeResolver::new()
}

#[cfg(test)]
mod tests {
    use super::{Dims, Rect};

    #[test]
    fn frame_trim_absolute() {
        let frame = Rect::sized(Dims(3, 1));
        let (text, ..) = frame.trim_absolute(&"123456", Dims(0, 0));
        assert_eq!(text, "123");

        let (text, ..) = frame.trim_absolute(&"123456", Dims(1, 0));
        assert_eq!(text, "12");

        let (text, ..) = frame.trim_absolute(&"123456", Dims(-1, 0));
        assert_eq!(text, "234");

        let (text, ..) = frame.trim_absolute(&"123456", Dims(-4, 0));
        assert_eq!(text, "56");

        let (text, ..) = frame.trim_absolute(&"123456", Dims(-3, 0));
        assert_eq!(text, "456");
    }
}