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annotate src/th06/std_vm.rs @ 706:bca515da9047

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examples: use common module.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 23 Aug 2019 19:46:47 +0200
parents 6020e33d4fc4
children 377c241be559
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6020e33d4fc4 Implement a .std renderer, and its associated VM.
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1 //! Interpreter of STD files.
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2
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3 use crate::th06::std::{Stage, Position, Call, Instruction};
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4 use crate::th06::interpolator::{Interpolator1, Interpolator4};
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5 use crate::util::math::{Mat4, perspective, setup_camera};
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6 use std::cell::RefCell;
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7 use std::rc::Rc;
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8
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9 /// Interpreter for Stage.
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10 pub struct StageRunner {
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11 /// XXX: no pub.
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12 pub stage: Rc<RefCell<Stage>>,
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13 frame: u32,
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14
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15 // TODO: use interpolators.
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16 position: [f32; 3],
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17 direction: [f32; 3],
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18
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19 /// XXX: no pub.
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20 pub fog_color: [f32; 4],
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21 /// XXX: no pub.
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22 pub fog_near: f32,
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23 /// XXX: no pub.
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24 pub fog_far: f32,
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25 }
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26
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27 impl StageRunner {
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28 /// Create a new StageRunner attached to a Stage.
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29 pub fn new(stage: Rc<RefCell<Stage>>) -> StageRunner {
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30 StageRunner {
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31 stage,
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32 frame: 0,
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33 position: [0.; 3],
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34 direction: [0.; 3],
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35 fog_color: [1.; 4],
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36 fog_near: 0.,
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37 fog_far: 1000.,
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38 }
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39 }
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40
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41 /// Advance the simulation one frame.
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42 pub fn run_frame(&mut self) {
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43 let stage = self.stage.borrow();
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44
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45 for Call { time, instr } in stage.script.iter() {
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46 if *time != self.frame {
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47 continue;
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48 }
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49
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50 println!("{} {:?}", time, instr);
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51
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52 match *instr {
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53 Instruction::SetViewpos(x, y, z) => {
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54 self.position[0] = x;
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55 self.position[1] = y;
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56 self.position[2] = z;
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57 }
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58 Instruction::SetFog(b, g, r, a, near, far) => {
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59 self.fog_color = [r as f32 / 255., g as f32 / 255., b as f32 / 255., a as f32 / 255.];
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60 self.fog_near = near;
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61 self.fog_far = far;
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62 }
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63 Instruction::SetViewpos2(dx, dy, dz) => {
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64 self.direction[0] = dx;
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65 self.direction[1] = dy;
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66 self.direction[2] = dz;
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67 }
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68 Instruction::StartInterpolatingViewpos2(frame, _, _) => {
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69 }
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70 Instruction::StartInterpolatingFog(frame, _, _) => {
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71 }
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72 Instruction::Unknown(_, _, _) => {
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73 }
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74 }
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75 }
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76
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77 self.frame += 1;
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78 }
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79
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80 /// Generate the model-view matrix for the current frame.
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81 pub fn get_model_view(&self) -> Mat4 {
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82 let [x, y, z] = self.position;
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83
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84 let [dx, dy, dz] = self.direction;
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85
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86 let view = setup_camera(dx, dy, dz);
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87
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88 let model = Mat4::new([[1., 0., 0., 0.],
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89 [0., 1., 0., 0.],
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90 [0., 0., 1., 0.],
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91 [-x, -y, -z, 1.]]);
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92 model * view
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93 }
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94 }