Mercurial > touhou

annotate src/th06/interpolator.rs @ 678:1d81a449c436

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement ECL instructions DelayAttack and NoDelayAttack.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 15 Aug 2019 21:35:22 +0200
parents 9e40bd5cc26d
children 6020e33d4fc4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
642
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
1 //! Animation runner.
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
2
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
3 #[derive(Debug, Clone, Copy, PartialEq)]
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
4 pub(crate) enum Formula {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
5 Linear,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
6 Power2,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
7 InvertPower2,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
8 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
9
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
10 impl Formula {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
11 fn apply(&self, x: f32) -> f32 {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
12 match self {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
13 Formula::Linear => x,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
14 Formula::Power2 => x * x,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
15 Formula::InvertPower2 => 2. * x - x * x,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
16 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
17 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
18 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
19
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
20 macro_rules! generate_interpolator {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
21 ($name:ident, $n:tt) => {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
22 #[derive(Debug, Clone)]
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
23 pub(crate) struct $name<T> {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
24 start_values: [T; $n],
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
25 end_values: [T; $n],
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
26 start_frame: u16,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
27 end_frame: u16,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
28 formula: Formula,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
29 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
30
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
31 impl<T> $name<T>
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
32 where f32: From<T>,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
33 T: From<f32>,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
34 T: std::ops::Sub<Output = T>,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
35 T: std::ops::Add<Output = T>,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
36 T: Copy,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
37 T: Default,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
38 {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
39 pub fn new(start_values: [T; $n], start_frame: u16, end_values: [T; $n], end_frame: u16, formula: Formula) -> $name<T> {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
40 $name {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
41 start_values,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
42 end_values,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
43 start_frame,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
44 end_frame,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
45 formula,
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
46 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
47 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
48
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
49 // XXX: Make it return [T; $n] instead, we don’t want to only do f32 here.
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
50 pub fn values(&self, frame: u16) -> [f32; $n] {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
51 if frame + 1 >= self.end_frame {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
52 // XXX: skip the last interpolation step.
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
53 // This bug is replicated from the original game.
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
54 //self.start_frame = self.end_frame;
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
55 //self.end_values
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
56 let mut values: [f32; $n] = [Default::default(); $n];
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
57 for (i, value) in self.end_values.iter().enumerate() {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
58 values[i] = f32::from(*value);
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
59 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
60 values
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
61 } else {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
62 let mut coeff = (frame - self.start_frame) as f32 / (self.end_frame - self.start_frame) as f32;
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
63 coeff = self.formula.apply(coeff);
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
64 let mut values: [f32; $n] = [Default::default(); $n];
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
65 for (i, (start, end)) in self.start_values.iter().zip(&self.end_values).enumerate() {
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
66 values[i] = f32::from(*start + T::from(coeff * f32::from(*end - *start)));
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
67 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
68 values
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
69 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
70 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
71 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
72 };
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
73 }
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
74
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
75 generate_interpolator!(Interpolator1, 1);
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
76 generate_interpolator!(Interpolator2, 2);
9e40bd5cc26d Move interpolators in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
77 generate_interpolator!(Interpolator3, 3);