Mercurial > touhou
annotate src/th06/anm0.rs @ 694:3ff1af76e413
anm0: only use recoverable errors, no panics except for anm0 asserts.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Fri, 23 Aug 2019 02:24:08 +0200 |
| parents | 7bde50132735 |
| children | b6c351ca0a35 |
| 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)?; | |
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92 let string = match String::from_utf8(slice.to_vec()) { |
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93 Ok(string) => string, |
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94 // XXX: use a more specific error instead. |
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95 Err(_) => return Err(nom::Err::Failure((i, nom::error::ErrorKind::Eof))) |
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96 }; |
| 638 | 97 Ok((i, string)) |
| 98 } | |
| 99 | |
| 100 fn parse_sprite(i: &[u8]) -> IResult<&[u8], Sprite> { | |
| 101 let (i, index) = le_u32(i)?; | |
| 102 let (i, x) = le_f32(i)?; | |
| 103 let (i, y) = le_f32(i)?; | |
| 104 let (i, width) = le_f32(i)?; | |
| 105 let (i, height) = le_f32(i)?; | |
| 106 Ok((i, Sprite { | |
| 107 index, | |
| 108 x, | |
| 109 y, | |
| 110 width, | |
| 111 height, | |
| 112 })) | |
| 113 } | |
| 114 | |
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115 macro_rules! declare_anm_instructions { |
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116 ($($opcode:tt => fn $name:ident($($arg:ident: $arg_type:ident),*)),*,) => { |
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117 /// Available instructions in an `Anm0`. |
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118 #[allow(missing_docs)] |
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119 #[derive(Debug, Clone, Copy)] |
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120 pub enum Instruction { |
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121 $( |
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122 $name($($arg_type),*) |
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123 ),* |
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124 } |
| 638 | 125 |
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126 fn parse_instruction_args(mut i: &[u8], opcode: u8) -> IResult<&[u8], Instruction> { |
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127 let instr = match opcode { |
| 638 | 128 $( |
| 129 $opcode => { | |
| 130 $( | |
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131 let (i2, $arg) = concat_idents!(le_, $arg_type)(i)?; |
| 638 | 132 i = i2; |
| 133 )* | |
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134 Instruction::$name($($arg),*) |
| 638 | 135 } |
| 136 )* | |
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137 // XXX: use a more specific error instead. |
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138 _ => return Err(nom::Err::Failure((i, nom::error::ErrorKind::Eof))) |
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139 }; |
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140 Ok((i, instr)) |
| 638 | 141 } |
| 142 }; | |
| 143 } | |
| 144 | |
| 145 declare_anm_instructions!{ | |
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146 0 => fn Delete(), |
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147 1 => fn LoadSprite(sprite_number: u32), |
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148 2 => fn SetScale(sx: f32, sy: f32), |
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149 3 => fn SetAlpha(alpha: u32), |
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150 4 => fn SetColor(red: u8, green: u8, blue: u8/*, XXX: x8*/), |
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151 5 => fn Jump(instruction: u32), |
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152 7 => fn ToggleMirrored(), |
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153 9 => fn SetRotations3d(x: f32, y: f32, z: f32), |
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154 10 => fn SetRotationsSpeed3d(x: f32, y: f32, z: f32), |
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155 11 => fn SetScaleSpeed(sx: f32, sy: f32), |
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156 12 => fn Fade(alpha: u32, duration: u32), |
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157 13 => fn SetBlendmodeAdd(), |
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158 14 => fn SetBlendmodeAlphablend(), |
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159 15 => fn KeepStill(), |
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160 16 => fn LoadRandomSprite(min_index: u32, amplitude: u32), |
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161 17 => fn Move(x: f32, y: f32, z: f32), |
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162 18 => fn MoveToLinear(x: f32, y: f32, z: f32, duration: u32), |
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163 19 => fn MoveToDecel(x: f32, y: f32, z: f32, duration: u32), |
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164 20 => fn MoveToAccel(x: f32, y: f32, z: f32, duration: u32), |
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165 21 => fn Wait(), |
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166 22 => fn InterruptLabel(label: i32), |
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167 23 => fn SetCornerRelativePlacement(), |
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168 24 => fn WaitEx(), |
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169 25 => fn SetAllowOffset(allow: u32), // TODO: better name |
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170 26 => fn SetAutomaticOrientation(automatic: u32), |
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171 27 => fn ShiftTextureX(dx: f32), |
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172 28 => fn ShiftTextureY(dy: f32), |
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173 29 => fn SetVisible(visible: u32), |
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174 30 => fn ScaleIn(sx: f32, sy: f32, duration: u32), |
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175 31 => fn Todo(todo: u32), |
| 638 | 176 } |
| 177 | |
| 178 fn parse_anm0(input: &[u8]) -> IResult<&[u8], Vec<Anm0>> { | |
| 179 let mut list = vec![]; | |
| 180 let start_offset = 0; | |
| 181 loop { | |
| 182 let i = &input[start_offset..]; | |
| 183 let (i, num_sprites) = le_u32(i)?; | |
| 184 let (i, num_scripts) = le_u32(i)?; | |
| 185 let (i, _) = tag(b"\0\0\0\0")(i)?; | |
| 186 let (i, width) = le_u32(i)?; | |
| 187 let (i, height) = le_u32(i)?; | |
| 188 let (i, format) = le_u32(i)?; | |
| 189 let (i, _unknown1) = le_u32(i)?; | |
| 190 let (i, first_name_offset) = le_u32(i)?; | |
| 191 let (i, _unused) = le_u32(i)?; | |
| 192 let (i, second_name_offset) = le_u32(i)?; | |
| 193 let (i, version) = le_u32(i)?; | |
| 194 let (i, _unknown2) = le_u32(i)?; | |
| 195 let (i, _texture_offset) = le_u32(i)?; | |
| 196 let (i, has_data) = le_u32(i)?; | |
| 197 let (i, _next_offset) = le_u32(i)?; | |
| 198 let (mut i, unknown3) = le_u32(i)?; | |
| 199 | |
| 200 assert_eq!(version, 0); | |
| 201 assert_eq!(unknown3, 0); | |
| 202 assert_eq!(has_data, 0); | |
| 203 | |
| 204 let mut sprite_offsets = vec![]; | |
| 205 for _ in 0..num_sprites { | |
| 206 let (i2, offset) = le_u32(i)?; | |
| 207 sprite_offsets.push(offset as usize); | |
| 208 i = i2; | |
| 209 } | |
| 210 | |
| 211 let mut script_offsets = vec![]; | |
| 212 for _ in 0..num_scripts { | |
| 213 let (i2, index) = le_u32(i)?; | |
| 214 let (i2, offset) = le_u32(i2)?; | |
| 215 script_offsets.push((index as u8, offset as usize)); | |
| 216 i = i2; | |
| 217 } | |
| 218 | |
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219 if input.len() < start_offset + first_name_offset as usize { |
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220 return Err(nom::Err::Failure((input, nom::error::ErrorKind::Eof))); |
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221 } |
| 638 | 222 let i = &input[start_offset + first_name_offset as usize..]; |
| 223 let (_, first_name) = parse_name(i, first_name_offset > 0)?; | |
| 224 | |
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225 if input.len() < start_offset + second_name_offset as usize { |
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226 return Err(nom::Err::Failure((input, nom::error::ErrorKind::Eof))); |
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227 } |
| 638 | 228 let i = &input[start_offset + second_name_offset as usize..]; |
| 229 let (_, second_name) = parse_name(i, second_name_offset > 0)?; | |
| 230 | |
| 231 let mut sprites = vec![]; | |
| 232 let mut i; | |
| 233 for offset in sprite_offsets { | |
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234 if input.len() < start_offset + offset { |
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235 return Err(nom::Err::Failure((input, nom::error::ErrorKind::Eof))); |
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236 } |
| 638 | 237 i = &input[start_offset + offset..]; |
| 238 let (_, sprite) = parse_sprite(i)?; | |
| 239 sprites.push(sprite); | |
| 240 } | |
| 241 | |
| 242 let mut scripts = HashMap::new(); | |
| 243 for (index, offset) in script_offsets { | |
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244 if input.len() < start_offset + offset { |
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245 return Err(nom::Err::Failure((input, nom::error::ErrorKind::Eof))); |
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246 } |
| 638 | 247 i = &input[start_offset + offset..]; |
| 248 let mut instruction_offsets = vec![]; | |
| 249 | |
| 250 let mut instructions = vec![]; | |
| 251 loop { | |
| 252 let tell = input.len() - i.len(); | |
| 253 instruction_offsets.push(tell - (start_offset + offset)); | |
| 254 let (i2, time) = le_u16(i)?; | |
| 255 let (i2, opcode) = le_u8(i2)?; | |
| 256 // TODO: maybe check against the size of parsed data? | |
| 257 let (i2, _size) = le_u8(i2)?; | |
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258 let (i2, instr) = parse_instruction_args(i2, opcode)?; |
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259 instructions.push(Call { time, instr }); |
| 638 | 260 i = i2; |
| 261 if opcode == 0 { | |
| 262 break; | |
| 263 } | |
| 264 } | |
| 265 let mut interrupts = HashMap::new(); | |
| 266 let mut j = 0; | |
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267 for Call { time: _, instr } in &mut instructions { |
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268 match instr { |
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269 Instruction::Jump(ref mut offset) => { |
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270 let result = instruction_offsets.binary_search(&(*offset as usize)); |
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271 match result { |
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272 Ok(ptr) => *offset = ptr as u32, |
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273 Err(ptr) => { |
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274 // XXX: use a more specific error instead. |
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275 return Err(nom::Err::Failure((input, nom::error::ErrorKind::Eof))); |
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276 //println!("Instruction offset not found for pointer: {}", ptr); |
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277 } |
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278 } |
| 638 | 279 } |
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280 Instruction::InterruptLabel(interrupt) => { |
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281 interrupts.insert(*interrupt, j + 1); |
| 638 | 282 } |
| 283 _ => () | |
| 284 } | |
| 285 j += 1; | |
| 286 } | |
| 287 scripts.insert(index, Script { | |
| 288 instructions, | |
| 289 interrupts, | |
| 290 }); | |
| 291 } | |
| 292 | |
| 293 assert!(has_data == 0); | |
| 294 | |
| 295 let anm0 = Anm0 { | |
| 296 size: (width, height), | |
| 297 format, | |
| 298 first_name, | |
| 299 second_name, | |
| 300 sprites, | |
| 301 scripts, | |
| 302 }; | |
| 303 list.push(anm0); | |
| 304 break; | |
| 305 } | |
| 306 Ok((b"", list)) | |
| 307 } | |
| 308 | |
| 309 #[cfg(test)] | |
| 310 mod tests { | |
| 311 use super::*; | |
| 312 use std::io::{self, Read}; | |
| 313 use std::fs::File; | |
| 314 | |
| 315 #[test] | |
| 316 fn anm0() { | |
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317 let file = File::open("EoSD/CM/player01.anm").unwrap(); |
| 638 | 318 let mut file = io::BufReader::new(file); |
| 319 let mut buf = vec![]; | |
| 320 file.read_to_end(&mut buf).unwrap(); | |
| 321 let anm0 = Anm0::from_slice(&buf).unwrap(); | |
| 322 assert_eq!(anm0.size, (256, 256)); | |
| 323 assert_eq!(anm0.format, 5); | |
| 324 } | |
| 325 } |