Mercurial > touhou
annotate src/th06/anm0.rs @ 647:1520b559cacc
Double checked prng.
| author | Gauvain "GovanifY" Roussel-Tarbouriech <gauvain@govanify.com> |
|---|---|
| date | Sun, 04 Aug 2019 00:07:46 +0200 |
| parents | 7bde50132735 |
| children | 3ff1af76e413 |
| rev | line source |
|---|---|
| 638 | 1 //! ANM0 animation format support. |
| 2 | |
| 3 use nom::{ | |
| 4 IResult, | |
| 5 bytes::complete::{tag, take_while_m_n}, | |
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6 number::complete::{le_u8, le_u16, le_u32, le_i32, le_f32}, |
| 638 | 7 }; |
| 8 use std::collections::HashMap; | |
| 9 | |
| 10 /// Coordinates of a sprite into the image. | |
| 11 #[derive(Debug, Clone)] | |
| 12 pub struct Sprite { | |
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13 /// Index inside the anm0. |
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14 pub index: u32, |
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15 |
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16 /// X coordinate in the sprite sheet. |
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17 pub x: f32, |
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18 |
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19 /// Y coordinate in the sprite sheet. |
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20 pub y: f32, |
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21 |
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22 /// Width of the sprite. |
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23 pub width: f32, |
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24 |
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25 /// Height of the sprite. |
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26 pub height: f32, |
| 638 | 27 } |
| 28 | |
| 29 /// A single instruction, part of a `Script`. | |
| 30 #[derive(Debug, Clone)] | |
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31 pub struct Call { |
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32 /// Time at which this instruction will be called. |
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33 pub time: u16, |
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34 |
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35 /// The instruction to call. |
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36 pub instr: Instruction, |
| 638 | 37 } |
| 38 | |
| 39 /// Script driving an animation. | |
| 40 #[derive(Debug, Clone)] | |
| 41 pub struct Script { | |
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42 /// List of instructions in this script. |
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43 pub instructions: Vec<Call>, |
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44 |
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45 /// List of interrupts in this script. |
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46 pub interrupts: HashMap<i32, u8> |
| 638 | 47 } |
| 48 | |
| 49 /// Main struct of the ANM0 animation format. | |
| 50 #[derive(Debug, Clone)] | |
| 51 pub struct Anm0 { | |
| 52 /// Resolution of the image used by this ANM. | |
| 53 pub size: (u32, u32), | |
| 54 | |
| 55 /// Format of this ANM. | |
| 56 pub format: u32, | |
| 57 | |
| 58 /// File name of the main image. | |
| 59 pub first_name: String, | |
| 60 | |
| 61 /// File name of an alpha channel image. | |
| 62 pub second_name: String, | |
| 63 | |
| 64 /// A list of sprites, coordinates into the attached image. | |
| 65 pub sprites: Vec<Sprite>, | |
| 66 | |
| 67 /// A map of scripts. | |
| 68 pub scripts: HashMap<u8, Script>, | |
| 69 } | |
| 70 | |
| 71 impl Anm0 { | |
| 72 /// Parse a slice of bytes into an `Anm0` struct. | |
| 73 pub fn from_slice(data: &[u8]) -> Result<Anm0, ()> { | |
| 74 // XXX: report the exact nom error instead! | |
| 75 let (_, anm0) = parse_anm0(data).or_else(|_| Err(()))?; | |
| 76 assert_eq!(anm0.len(), 1); | |
| 77 Ok(anm0[0].clone()) | |
| 78 } | |
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79 |
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80 /// TODO |
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81 pub fn inv_size(&self) -> (f32, f32) { |
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82 let (x, y) = self.size; |
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83 (1. / x as f32, 1. / y as f32) |
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84 } |
| 638 | 85 } |
| 86 | |
| 87 fn parse_name(i: &[u8], is_present: bool) -> IResult<&[u8], String> { | |
| 88 if !is_present { | |
| 89 return Ok((i, String::new())); | |
| 90 } | |
| 91 let (_, slice) = take_while_m_n(0, 32, |c| c != 0)(i)?; | |
| 92 // XXX: no unwrap! | |
| 93 let string = String::from_utf8(slice.to_vec()).unwrap(); | |
| 94 Ok((i, string)) | |
| 95 } | |
| 96 | |
| 97 fn parse_sprite(i: &[u8]) -> IResult<&[u8], Sprite> { | |
| 98 let (i, index) = le_u32(i)?; | |
| 99 let (i, x) = le_f32(i)?; | |
| 100 let (i, y) = le_f32(i)?; | |
| 101 let (i, width) = le_f32(i)?; | |
| 102 let (i, height) = le_f32(i)?; | |
| 103 Ok((i, Sprite { | |
| 104 index, | |
| 105 x, | |
| 106 y, | |
| 107 width, | |
| 108 height, | |
| 109 })) | |
| 110 } | |
| 111 | |
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112 macro_rules! declare_anm_instructions { |
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113 ($($opcode:tt => fn $name:ident($($arg:ident: $arg_type:ident),*)),*,) => { |
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114 /// Available instructions in an `Anm0`. |
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115 #[allow(missing_docs)] |
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116 #[derive(Debug, Clone, Copy)] |
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117 pub enum Instruction { |
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118 $( |
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119 $name($($arg_type),*) |
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120 ),* |
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121 } |
| 638 | 122 |
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123 fn parse_instruction_args(input: &[u8], opcode: u8) -> IResult<&[u8], Instruction> { |
| 638 | 124 let mut i = &input[..]; |
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125 let instr = match opcode { |
| 638 | 126 $( |
| 127 $opcode => { | |
| 128 $( | |
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129 let (i2, $arg) = concat_idents!(le_, $arg_type)(i)?; |
| 638 | 130 i = i2; |
| 131 )* | |
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132 Instruction::$name($($arg),*) |
| 638 | 133 } |
| 134 )* | |
| 135 _ => unreachable!() | |
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136 }; |
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137 Ok((i, instr)) |
| 638 | 138 } |
| 139 }; | |
| 140 } | |
| 141 | |
| 142 declare_anm_instructions!{ | |
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143 0 => fn Delete(), |
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144 1 => fn LoadSprite(sprite_number: u32), |
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145 2 => fn SetScale(sx: f32, sy: f32), |
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146 3 => fn SetAlpha(alpha: u32), |
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147 4 => fn SetColor(red: u8, green: u8, blue: u8/*, XXX: x8*/), |
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148 5 => fn Jump(instruction: u32), |
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149 7 => fn ToggleMirrored(), |
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150 9 => fn SetRotations3d(x: f32, y: f32, z: f32), |
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151 10 => fn SetRotationsSpeed3d(x: f32, y: f32, z: f32), |
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152 11 => fn SetScaleSpeed(sx: f32, sy: f32), |
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153 12 => fn Fade(alpha: u32, duration: u32), |
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154 13 => fn SetBlendmodeAdd(), |
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155 14 => fn SetBlendmodeAlphablend(), |
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156 15 => fn KeepStill(), |
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157 16 => fn LoadRandomSprite(min_index: u32, amplitude: u32), |
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158 17 => fn Move(x: f32, y: f32, z: f32), |
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159 18 => fn MoveToLinear(x: f32, y: f32, z: f32, duration: u32), |
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160 19 => fn MoveToDecel(x: f32, y: f32, z: f32, duration: u32), |
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161 20 => fn MoveToAccel(x: f32, y: f32, z: f32, duration: u32), |
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162 21 => fn Wait(), |
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163 22 => fn InterruptLabel(label: i32), |
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164 23 => fn SetCornerRelativePlacement(), |
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165 24 => fn WaitEx(), |
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166 25 => fn SetAllowOffset(allow: u32), // TODO: better name |
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167 26 => fn SetAutomaticOrientation(automatic: u32), |
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168 27 => fn ShiftTextureX(dx: f32), |
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169 28 => fn ShiftTextureY(dy: f32), |
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170 29 => fn SetVisible(visible: u32), |
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171 30 => fn ScaleIn(sx: f32, sy: f32, duration: u32), |
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172 31 => fn Todo(todo: u32), |
| 638 | 173 } |
| 174 | |
| 175 fn parse_anm0(input: &[u8]) -> IResult<&[u8], Vec<Anm0>> { | |
| 176 let mut list = vec![]; | |
| 177 let start_offset = 0; | |
| 178 loop { | |
| 179 let i = &input[start_offset..]; | |
| 180 let (i, num_sprites) = le_u32(i)?; | |
| 181 let (i, num_scripts) = le_u32(i)?; | |
| 182 let (i, _) = tag(b"\0\0\0\0")(i)?; | |
| 183 let (i, width) = le_u32(i)?; | |
| 184 let (i, height) = le_u32(i)?; | |
| 185 let (i, format) = le_u32(i)?; | |
| 186 let (i, _unknown1) = le_u32(i)?; | |
| 187 let (i, first_name_offset) = le_u32(i)?; | |
| 188 let (i, _unused) = le_u32(i)?; | |
| 189 let (i, second_name_offset) = le_u32(i)?; | |
| 190 let (i, version) = le_u32(i)?; | |
| 191 let (i, _unknown2) = le_u32(i)?; | |
| 192 let (i, _texture_offset) = le_u32(i)?; | |
| 193 let (i, has_data) = le_u32(i)?; | |
| 194 let (i, _next_offset) = le_u32(i)?; | |
| 195 let (mut i, unknown3) = le_u32(i)?; | |
| 196 | |
| 197 assert_eq!(version, 0); | |
| 198 assert_eq!(unknown3, 0); | |
| 199 assert_eq!(has_data, 0); | |
| 200 | |
| 201 let mut sprite_offsets = vec![]; | |
| 202 for _ in 0..num_sprites { | |
| 203 let (i2, offset) = le_u32(i)?; | |
| 204 sprite_offsets.push(offset as usize); | |
| 205 i = i2; | |
| 206 } | |
| 207 | |
| 208 let mut script_offsets = vec![]; | |
| 209 for _ in 0..num_scripts { | |
| 210 let (i2, index) = le_u32(i)?; | |
| 211 let (i2, offset) = le_u32(i2)?; | |
| 212 script_offsets.push((index as u8, offset as usize)); | |
| 213 i = i2; | |
| 214 } | |
| 215 | |
| 216 let i = &input[start_offset + first_name_offset as usize..]; | |
| 217 let (_, first_name) = parse_name(i, first_name_offset > 0)?; | |
| 218 | |
| 219 let i = &input[start_offset + second_name_offset as usize..]; | |
| 220 let (_, second_name) = parse_name(i, second_name_offset > 0)?; | |
| 221 | |
| 222 let mut sprites = vec![]; | |
| 223 let mut i; | |
| 224 for offset in sprite_offsets { | |
| 225 i = &input[start_offset + offset..]; | |
| 226 let (_, sprite) = parse_sprite(i)?; | |
| 227 sprites.push(sprite); | |
| 228 } | |
| 229 | |
| 230 let mut scripts = HashMap::new(); | |
| 231 for (index, offset) in script_offsets { | |
| 232 i = &input[start_offset + offset..]; | |
| 233 let mut instruction_offsets = vec![]; | |
| 234 | |
| 235 let mut instructions = vec![]; | |
| 236 loop { | |
| 237 let tell = input.len() - i.len(); | |
| 238 instruction_offsets.push(tell - (start_offset + offset)); | |
| 239 let (i2, time) = le_u16(i)?; | |
| 240 let (i2, opcode) = le_u8(i2)?; | |
| 241 // TODO: maybe check against the size of parsed data? | |
| 242 let (i2, _size) = le_u8(i2)?; | |
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changeset
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243 let (i2, instr) = parse_instruction_args(i2, opcode)?; |
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244 instructions.push(Call { time, instr }); |
| 638 | 245 i = i2; |
| 246 if opcode == 0 { | |
| 247 break; | |
| 248 } | |
| 249 } | |
| 250 let mut interrupts = HashMap::new(); | |
| 251 let mut j = 0; | |
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252 for Call { time: _, instr } in &mut instructions { |
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253 match instr { |
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254 Instruction::Jump(ref mut offset) => { |
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parents:
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255 let result = instruction_offsets.binary_search(&(*offset as usize)); |
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256 match result { |
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257 Ok(ptr) => *offset = ptr as u32, |
| 638 | 258 // TODO: make that a recoverable error instead. |
| 259 Err(ptr) => panic!("Instruction offset not found for pointer: {}", ptr), | |
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260 } |
| 638 | 261 } |
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parents:
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262 Instruction::InterruptLabel(interrupt) => { |
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parents:
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263 interrupts.insert(*interrupt, j + 1); |
| 638 | 264 } |
| 265 _ => () | |
| 266 } | |
| 267 j += 1; | |
| 268 } | |
| 269 scripts.insert(index, Script { | |
| 270 instructions, | |
| 271 interrupts, | |
| 272 }); | |
| 273 } | |
| 274 | |
| 275 assert!(has_data == 0); | |
| 276 | |
| 277 let anm0 = Anm0 { | |
| 278 size: (width, height), | |
| 279 format, | |
| 280 first_name, | |
| 281 second_name, | |
| 282 sprites, | |
| 283 scripts, | |
| 284 }; | |
| 285 list.push(anm0); | |
| 286 break; | |
| 287 } | |
| 288 Ok((b"", list)) | |
| 289 } | |
| 290 | |
| 291 #[cfg(test)] | |
| 292 mod tests { | |
| 293 use super::*; | |
| 294 use std::io::{self, Read}; | |
| 295 use std::fs::File; | |
| 296 | |
| 297 #[test] | |
| 298 fn anm0() { | |
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299 let file = File::open("EoSD/CM/player01.anm").unwrap(); |
| 638 | 300 let mut file = io::BufReader::new(file); |
| 301 let mut buf = vec![]; | |
| 302 file.read_to_end(&mut buf).unwrap(); | |
| 303 let anm0 = Anm0::from_slice(&buf).unwrap(); | |
| 304 assert_eq!(anm0.size, (256, 256)); | |
| 305 assert_eq!(anm0.format, 5); | |
| 306 } | |
| 307 } |