maikor_platform/models/
sprite.rs

1use crate::graphics::sprite::{byte4, byte5};
2use crate::models::{Byteable, Sprite};
3
4impl Sprite {
5    #[allow(clippy::too_many_arguments)]
6    pub fn new(
7        x: usize,
8        y: usize,
9        id: usize,
10        flip_v: bool,
11        flip_h: bool,
12        palette: usize,
13        large: bool,
14        order: usize,
15        half_alpha: bool,
16        rotated: bool,
17        atlas: usize,
18        enabled: bool,
19    ) -> Self {
20        Self {
21            x,
22            y,
23            id,
24            flip_v,
25            flip_h,
26            palette,
27            large,
28            order,
29            half_alpha,
30            rotated,
31            atlas,
32            enabled,
33        }
34    }
35}
36
37impl Byteable for Sprite {
38    const SIZE: usize = 5;
39
40    fn from_bytes(bytes: &[u8]) -> Sprite {
41        Sprite {
42            x: bytes[0] as usize,
43            y: bytes[1] as usize,
44            id: bytes[2] as usize,
45            flip_v: bytes[3] & byte4::MASK_FLIP_V == byte4::MASK_FLIP_V,
46            flip_h: bytes[3] & byte4::MASK_FLIP_H == byte4::MASK_FLIP_H,
47            palette: (bytes[4] & byte5::MASK_PALETTE) as usize,
48            large: bytes[4] & byte5::MASK_LARGE == byte5::MASK_LARGE,
49            order: ((bytes[4] & byte5::MASK_ORDER) >> byte5::OFFSET_ORDER) as usize,
50            half_alpha: bytes[3] & byte4::MASK_HALF_ALPHA == byte4::MASK_HALF_ALPHA,
51            rotated: bytes[3] & byte4::MASK_ROTATED == byte4::MASK_ROTATED,
52            atlas: ((bytes[4] & byte5::MASK_ATLAS) >> byte5::OFFSET_ATLAS) as usize,
53            enabled: bytes[3] & byte4::MASK_ENABLED == byte4::MASK_ENABLED,
54        }
55    }
56
57    fn to_bytes(&self) -> Vec<u8> {
58        let mut byte4 = 0;
59        let mut byte5 = 0;
60        if self.flip_h {
61            byte4 |= byte4::MASK_FLIP_H;
62        }
63        if self.flip_v {
64            byte4 |= byte4::MASK_FLIP_V;
65        }
66        if self.half_alpha {
67            byte4 |= byte4::MASK_HALF_ALPHA;
68        }
69        if self.enabled {
70            byte4 |= byte4::MASK_ENABLED;
71        }
72        if self.rotated {
73            byte4 |= byte4::MASK_ROTATED;
74        }
75        if self.large {
76            byte5 |= byte5::MASK_LARGE;
77        }
78        byte5 |= (self.atlas << byte5::OFFSET_ATLAS) as u8;
79        byte5 |= (self.order << byte5::OFFSET_ORDER) as u8;
80        byte5 |= self.palette as u8;
81        vec![self.x as u8, self.y as u8, self.id as u8, byte4, byte5]
82    }
83}
84
85#[cfg(test)]
86mod test {
87    use crate::graphics::sprite::{byte4, byte5};
88    use crate::models::{Byteable, Sprite};
89
90    #[test]
91    fn write_test() {
92        let sprite = Sprite::default();
93        assert_eq!(sprite.to_bytes(), [0, 0, 0, 0, 0]);
94        let sprite = Sprite::new(255, 255, 255, true, true, 3, true, 3, true, true, 3, true);
95        assert_eq!(sprite.to_bytes(), [255, 255, 255, 241, 251]);
96        let sprite = Sprite::new(51, 120, 34, true, false, 1, true, 2, true, false, 0, true);
97        let bytes = sprite.to_bytes();
98        assert_eq!(bytes, [51, 120, 34, 161, 193]);
99        assert_eq!(bytes[3] & byte4::MASK_ENABLED, byte4::MASK_ENABLED);
100        assert_eq!(bytes[3] & byte4::MASK_FLIP_V, byte4::MASK_FLIP_V);
101        assert_eq!(bytes[3] & byte4::MASK_FLIP_H, 0);
102        assert_eq!(bytes[3] & byte4::MASK_ROTATED, 0);
103        assert_eq!(bytes[3] & byte4::MASK_HALF_ALPHA, byte4::MASK_HALF_ALPHA);
104        assert_eq!(bytes[4] & byte5::MASK_LARGE, byte5::MASK_LARGE);
105        assert_eq!((bytes[4] & byte5::MASK_ORDER) >> byte5::OFFSET_ORDER, 2);
106        assert_eq!(bytes[4] & byte5::MASK_PALETTE, 1);
107        assert_eq!((bytes[4] & byte5::MASK_ATLAS) >> byte5::OFFSET_ATLAS, 0);
108    }
109
110    #[test]
111    fn read_test() {
112        let sprite = Sprite::from_bytes(&[0, 0, 0, 0, 0]);
113        assert_eq!(sprite, Sprite::default());
114        let sprite = Sprite::from_bytes(&[255, 255, 255, 255, 255]);
115        assert_eq!(
116            sprite,
117            Sprite::new(255, 255, 255, true, true, 3, true, 3, true, true, 3, true)
118        );
119        let sprite = Sprite::from_bytes(&[
120            126,
121            69,
122            99,
123            byte4::MASK_ENABLED | byte4::MASK_FLIP_V | byte4::MASK_HALF_ALPHA,
124            byte5::MASK_LARGE | 1,
125        ]);
126        assert_eq!(
127            sprite,
128            Sprite::new(126, 69, 99, true, false, 1, true, 0, true, false, 0, true)
129        );
130    }
131}
maikor_platform/models/sprite.rs

maikor_platform/models/
sprite.rs
