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annotate src/th06/ecl.rs @ 665:965ecdbf0316

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Make rank user-defined in eclrenderer.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 11 Aug 2019 20:14:20 +0200
parents f08e8e3c6196
children 1bb8b34dbd32
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1 //! ECL enemy script format support.
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2
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3 use nom::{
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4 IResult,
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5 bytes::complete::take_while_m_n,
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6 number::complete::{le_u8, le_u16, le_u32, le_i16, le_i32, le_f32},
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7 };
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8 use encoding_rs::SHIFT_JIS;
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9 use bitflags::bitflags;
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10
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11 bitflags! {
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12 /// Bit flags describing the current difficulty level.
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13 pub struct Rank: u16 {
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14 /// Easy mode.
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15 const Easy = 0x100;
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16
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17 /// Normal mode.
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18 const Normal = 0x200;
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19
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20 /// Hard mode.
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21 const Hard = 0x400;
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22
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23 /// Lunatic mode.
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24 const Lunatic = 0x800;
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25
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26 /// Any or all modes.
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27 const All = 0xff00;
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28 }
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29 }
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30
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31 impl std::str::FromStr for Rank {
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32 type Err = String;
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33
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34 fn from_str(s: &str) -> Result<Rank, Self::Err> {
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35 Ok(match s {
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36 "easy" => Rank::Easy,
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37 "normal" => Rank::Normal,
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38 "hard" => Rank::Hard,
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39 "lunatic" => Rank::Lunatic,
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40 _ => return Err(format!("unknown rank {}", s))
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41 })
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42 }
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43 }
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44
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45 /// A single instruction, part of a `Script`.
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46 #[derive(Debug, Clone)]
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47 pub struct CallSub {
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48 /// Time at which this instruction will be called.
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49 pub time: i32,
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50
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51 /// The difficulty level(s) this instruction will be called at.
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52 pub rank_mask: Rank,
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53
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54 /// TODO
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55 pub param_mask: u16,
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56
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57 /// The instruction to call.
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58 pub instr: SubInstruction,
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59 }
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60
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61 /// Script driving an animation.
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62 #[derive(Debug, Clone)]
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63 pub struct Sub {
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64 /// List of instructions in this script.
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65 pub instructions: Vec<CallSub>,
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66 }
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67
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68 /// A single instruction, part of a `Script`.
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69 #[derive(Debug, Clone)]
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70 pub struct CallMain {
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71 /// Time at which this instruction will be called.
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72 pub time: u16,
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73
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74 /// Subroutine to call for this enemy.
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75 pub sub: u16,
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76
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77 /// The instruction to call.
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78 pub instr: MainInstruction,
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79 }
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80
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81 /// Script driving an animation.
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82 #[derive(Debug, Clone)]
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83 pub struct Main {
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84 /// List of instructions in this script.
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85 pub instructions: Vec<CallMain>,
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86 }
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87
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88 /// Main struct of the ANM0 animation format.
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89 #[derive(Debug, Clone)]
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90 pub struct Ecl {
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91 /// A list of subs.
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92 pub subs: Vec<Sub>,
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93
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94 /// A list of mains.
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95 pub mains: Vec<Main>,
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96 }
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97
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98 impl Ecl {
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99 /// Parse a slice of bytes into an `Ecl` struct.
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100 pub fn from_slice(data: &[u8]) -> IResult<&[u8], Ecl> {
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101 parse_ecl(data)
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102 }
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103 }
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104
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105 macro_rules! declare_main_instructions {
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106 ($($opcode:tt => fn $name:ident($($arg:ident: $arg_type:ident),*)),*,) => {
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107 /// Available instructions in an `Ecl`.
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108 #[allow(missing_docs)]
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109 #[derive(Debug, Clone, Copy)]
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110 pub enum MainInstruction {
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111 $(
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112 $name($($arg_type),*)
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113 ),*
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114 }
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115
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116 fn parse_main_instruction_args(input: &[u8], opcode: u16) -> IResult<&[u8], MainInstruction> {
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117 let mut i = &input[..];
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118 let instr = match opcode {
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119 $(
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120 $opcode => {
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121 $(
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122 let (i2, $arg) = concat_idents!(le_, $arg_type)(i)?;
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123 i = i2;
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124 )*
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125 MainInstruction::$name($($arg),*)
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126 }
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127 )*
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128 _ => unreachable!()
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129 };
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130 Ok((i, instr))
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131 }
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132 };
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133 }
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134
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135 /// Parse a SHIFT_JIS byte string of length 34 into a String.
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136 pub fn le_String(i: &[u8]) -> IResult<&[u8], String> {
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137 assert_eq!(i.len(), 34);
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138 let data = i.splitn(2, |c| *c == b'\0').collect::<Vec<_>>()[0];
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139 let (string, encoding, replaced) = SHIFT_JIS.decode(data);
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140 Ok((&i[34..], string.into_owned()))
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141 }
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142
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143 macro_rules! declare_sub_instructions {
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144 ($($opcode:tt => fn $name:ident($($arg:ident: $arg_type:ident),*)),*,) => {
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145 /// Available instructions in an `Ecl`.
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146 #[allow(missing_docs)]
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147 #[derive(Debug, Clone)]
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148 pub enum SubInstruction {
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149 $(
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150 $name($($arg_type),*)
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151 ),*
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152 }
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153
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154 fn parse_sub_instruction_args(input: &[u8], opcode: u16) -> IResult<&[u8], SubInstruction> {
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155 let mut i = &input[..];
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156 let instr = match opcode {
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157 $(
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158 $opcode => {
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159 $(
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160 let (i2, $arg) = concat_idents!(le_, $arg_type)(i)?;
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161 i = i2;
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162 )*
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163 SubInstruction::$name($($arg),*)
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164 }
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165 )*
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166 _ => unreachable!()
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167 };
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168 Ok((i, instr))
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169 }
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170 };
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171 }
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172
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173 declare_main_instructions!{
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174 0 => fn SpawnEnemy(x: f32, y: f32, z: f32, life: i16, bonus_dropped: i16, die_score: u32),
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175 2 => fn SpawnEnemyMirrored(x: f32, y: f32, z: f32, life: i16, bonus_dropped: i16, die_score: u32),
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176 4 => fn SpawnEnemyRandom(x: f32, y: f32, z: f32, life: i16, bonus_dropped: i16, die_score: u32),
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177 6 => fn SpawnEnemyMirroredRandom(x: f32, y: f32, z: f32, life: i16, bonus_dropped: i16, die_score: u32),
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178 8 => fn CallMessage(),
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179 9 => fn WaitMessage(),
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180 10 => fn ResumeEcl(x: f32, y: f32),
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181 12 => fn WaitForBossDeath(),
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182 }
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183
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184 declare_sub_instructions!{
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185 0 => fn Noop(),
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186 1 => fn Destroy(unused: u32),
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187 2 => fn RelativeJump(frame: i32, ip: i32),
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188 3 => fn RelativeJumpEx(frame: i32, ip: i32, variable_id: i32),
650
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189 4 => fn SetInt(var: i32, value: i32),
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190 5 => fn SetFloat(var: i32, value: f32),
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191 6 => fn SetRandomInt(var: i32, max: i32),
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192 8 => fn SetRandomFloat(var: i32, max: f32),
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193 9 => fn SetRandomFloatMin(var: i32, amplitude: f32, min: f32),
650
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194 10 => fn StoreX(var: i32),
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195 13 => fn AddInt(var: i32, a: i32, b: i32),
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196 14 => fn SubstractInt(var: i32, a: i32, b: i32),
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197 15 => fn MultiplyInt(var: i32, a: i32, b: i32),
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198 16 => fn DivideInt(var: i32, a: i32, b: i32),
660
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199 17 => fn ModuloInt(var: i32, a: i32, b: i32),
650
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200 18 => fn Increment(var: i32),
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201 20 => fn AddFloat(var: i32, a: f32, b: f32),
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202 21 => fn SubstractFloat(var: i32, a: f32, b: f32),
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203 23 => fn DivideFloat(var: i32, a: f32, b: f32),
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204 25 => fn GetDirection(var: i32, x1: f32, y1: f32, x2: f32, y2: f32),
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205 26 => fn FloatToUnitCircle(var: i32),
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206 27 => fn CompareInts(a: i32, b: i32),
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207 28 => fn CompareFloats(a: f32, b: f32),
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208 29 => fn RelativeJumpIfLowerThan(frame: i32, ip: i32),
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209 30 => fn RelativeJumpIfLowerOrEqual(frame: i32, ip: i32),
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210 31 => fn RelativeJumpIfEqual(frame: i32, ip: i32),
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211 32 => fn RelativeJumpIfGreaterThan(frame: i32, ip: i32),
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212 33 => fn RelativeJumpIfGreaterOrEqual(frame: i32, ip: i32),
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213 34 => fn RelativeJumpIfNotEqual(frame: i32, ip: i32),
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214 35 => fn Call(sub: i32, param1: i32, param2: f32),
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215 36 => fn Return(),
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216 39 => fn CallIfEqual(sub: i32, param1: i32, param2: f32, a: i32, b: i32),
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217 43 => fn SetPosition(x: f32, y: f32, z: f32),
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218 45 => fn SetAngleAndSpeed(angle: f32, speed: f32),
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219 46 => fn SetRotationSpeed(speed: f32),
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220 47 => fn SetSpeed(speed: f32),
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221 48 => fn SetAcceleration(acceleration: f32),
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222 49 => fn SetRandomAngle(min: f32, max: f32),
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223 50 => fn SetRandomAngleEx(min: f32, max: f32),
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224 51 => fn TargetPlayer(TODO: f32, speed: f32),
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225 52 => fn MoveInDecel(duration: i32, angle: f32, speed: f32),
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226 56 => fn MoveToLinear(duration: i32, x: f32, y: f32, z: f32),
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227 57 => fn MoveToDecel(duration: i32, x: f32, y: f32, z: f32),
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228 59 => fn MoveToAccel(duration: i32, x: f32, y: f32, z: f32),
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229 61 => fn StopIn(duration: i32),
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230 63 => fn StopInAccel(duration: i32),
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231 65 => fn SetScreenBox(xmin: f32, ymin: f32, xmax: f32, ymax: f32),
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232 66 => fn ClearScreenBox(),
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233 67 => fn SetBulletAttributes1(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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234 68 => fn SetBulletAttributes2(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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235 69 => fn SetBulletAttributes3(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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236 70 => fn SetBulletAttributes4(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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237 71 => fn SetBulletAttributes5(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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238 74 => fn SetBulletAttributes6(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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239 75 => fn SetBulletAttributes7(anim: i16, sprite_index_offset: i16, bullets_per_shot: i32, number_of_shots: i32, speed: f32, speed2: f32, launch_angle: f32, angle: f32, flags: i32),
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240 76 => fn SetBulletInterval(interval: i32),
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241 77 => fn SetBulletIntervalEx(interval: i32),
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242 78 => fn DelayAttack(),
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243 79 => fn NoDelayAttack(),
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244 81 => fn SetBulletLaunchOffset(x: f32, y: f32, z: f32),
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245 82 => fn SetExtendedBulletAttributes(a: i32, b: i32, c: i32, d: i32, e: f32, f: f32, g: f32, h: f32),
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246 83 => fn ChangeBulletsInStarBonus(),
664
f08e8e3c6196 Use bitflags for the rank, instead of an u16.
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247 84 => fn UNK0(UNK: i32),
650
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248 85 => fn NewLaser(laser_type: i16, sprite_idx_offset: i16, angle: f32, speed: f32, start_offset: f32, end_offset: f32, max_length: f32, width: f32, start_duration: i32, duration: i32, end_duration: i32, grazing_delay: i32, grazing_extra_duration: i32, UNK1: i32),
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249 86 => fn NewLaserTowardsPlayer(laser_type: i16, sprite_idx_offset: i16, angle: f32, speed: f32, start_offset: f32, end_offset: f32, max_length: f32, width: f32, start_duration: i32, duration: i32, end_duration: i32, grazing_delay: i32, grazing_extra_duration: i32, UNK1: i32),
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parents:
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250 87 => fn SetUpcomingLaserId(id: i32),
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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251 88 => fn AlterLaserAngle(id: i32, delta: f32),
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252 90 => fn RepositionLaser(id: i32, ox: f32, oy: f32, oz: f32),
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parents:
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253 92 => fn CanceLaser(id: i32),
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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254 93 => fn SetSpellcard(face: i16, number: i16, name: String),
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255 94 => fn Endspellcard(),
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256 95 => fn SpawnEnemy(sub: i32, x: f32, y: f32, z: f32, life: i16, bonus_dropped: i16, die_score: i32),
f6bfc9e6dab0 Add an ECL parser.
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257 96 => fn KillAllEnemies(),
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258 97 => fn SetAnim(script: i32),
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259 98 => fn SetMultipleAnims(default: i16, end_left: i16, end_right: i16, left: i16, right: i16, UNUSED: i16),
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260 99 => fn SetAuxAnm(number: i32, script: i32),
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261 100 => fn SetDeathAnim(sprite_index: i32),
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262 101 => fn SetBossMode(value: i32),
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263 102 => fn CreateSquares(UNK1: i32, UNK2: f32, UNK3: f32, UNK4: f32, UNK5: f32),
661
598f3125cbac Implement enough instructions to execute sub 0 from stage 1.
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parents: 660
diff changeset
264 103 => fn SetHitbox(width: f32, height: f32, depth: f32),
650
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265 104 => fn SetCollidable(collidable: i32),
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266 105 => fn SetDamageable(damageable: i32),
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267 106 => fn PlaySound(index: i32),
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268 107 => fn SetDeathFlags(death_flags: i32),
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269 108 => fn SetDeathCallback(sub: i32),
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270 109 => fn MemoryWriteInt(value: i32, index: i32),
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271 111 => fn SetLife(life: i32),
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272 112 => fn SetEllapsedTime(frame: i32),
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273 113 => fn SetLowLifeTrigger(trigger: i32),
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274 114 => fn SetLowLifeCallback(sub: i32),
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275 115 => fn SetTimeout(timeout: i32),
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276 116 => fn SetTimeoutCallback(sub: i32),
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277 117 => fn SetTouchable(touchable: i32),
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278 118 => fn DropParticles(anim: i32, number: u32, r: u8, g: u8, b: u8, UNUSED: u8),
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279 119 => fn DropBonus(number: i32),
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280 120 => fn SetAutomaticOrientation(automatic: i32),
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281 121 => fn CallSpecialFunction(function: i32, argument: i32),
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282 122 => fn UNK1(TODO: i32),
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283 123 => fn SkipFrames(frames: i32),
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284 124 => fn DropSpecificBonus(type_: i32),
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285 125 => fn UNK2(),
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286 126 => fn SetRemainingLives(lives: i32),
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287 127 => fn UNK3(TODO: i32),
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288 128 => fn Interrupt(event: i32),
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289 129 => fn InterruptAux(number: i32, event: i32),
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290 130 => fn UNK5(TODO: i32),
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291 131 => fn SetDifficultyCoeffs(speed_a: f32, speed_b: f32, nb_a: i32, nb_b: i32, shots_a: i32, shots_b: i32),
f6bfc9e6dab0 Add an ECL parser.
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292 132 => fn SetInvisible(invisible: i32),
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293 133 => fn CopyCallbacks(),
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294 134 => fn UNK6(),
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295 135 => fn EnableSpellcardBonus(UNKNOW: i32),
f6bfc9e6dab0 Add an ECL parser.
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296 }
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297
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298 fn parse_ecl(input: &[u8]) -> IResult<&[u8], Ecl> {
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299 let i = input;
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300
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301 let (i, sub_count) = le_u16(i)?;
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302 let (mut i, main_count) = le_u16(i)?;
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303 assert_eq!(main_count, 0);
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304
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305 let mut main_offsets = Vec::new();
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306 for _ in 0..3 {
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307 let (i2, offset) = le_u32(i)?;
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308 main_offsets.push(offset as usize);
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309 i = i2;
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310 }
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311
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312 let mut sub_offsets = Vec::new();
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313 for _ in 0..sub_count {
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314 let (i2, offset) = le_u32(i)?;
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315 sub_offsets.push(offset as usize);
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316 i = i2;
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317 }
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318
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319 // Read all subs.
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320 let mut subs = Vec::new();
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321 for offset in sub_offsets {
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322 let mut i = &input[offset..];
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323 let mut instructions = Vec::new();
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324 loop {
660
31fc0d881105 Make ecl_vm compile, and use it in eclrenderer (doesn’t render yet).
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325 let (i2, time) = le_i32(i)?;
650
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326 let (i2, opcode) = le_u16(i2)?;
660
31fc0d881105 Make ecl_vm compile, and use it in eclrenderer (doesn’t render yet).
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327 if time == -1 || opcode == 0xffff {
650
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328 break;
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329 }
f6bfc9e6dab0 Add an ECL parser.
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330
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331 let (i2, size) = le_u16(i2)?;
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332 let (i2, rank_mask) = le_u16(i2)?;
664
f08e8e3c6196 Use bitflags for the rank, instead of an u16.
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parents: 661
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333 let rank_mask = Rank::from_bits(rank_mask).unwrap();
650
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334 let (i2, param_mask) = le_u16(i2)?;
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335 // FIXME: this - 12 can trigger a panic, fuzz it!
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336 let data = &i2[..size as usize - 12];
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337 let (data, instr) = parse_sub_instruction_args(data, opcode)?;
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338 assert_eq!(data.len(), 0);
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339 instructions.push(CallSub { time, rank_mask, param_mask, instr });
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340 i = &i[size as usize..];
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341 }
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342 subs.push(Sub { instructions });
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343 }
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344
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345 // Read all mains (always a single one atm).
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346 let mut mains = Vec::new();
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347 for offset in main_offsets {
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348 if offset == 0 {
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349 break;
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350 }
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351
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352 let mut i = &input[offset..];
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353 let mut instructions = Vec::new();
f6bfc9e6dab0 Add an ECL parser.
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354 loop {
f6bfc9e6dab0 Add an ECL parser.
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355 let (i2, time) = le_u16(i)?;
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356 let (i2, sub) = le_u16(i2)?;
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357 if time == 0xffff && sub == 4 {
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358 break;
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359 }
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360
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361 let (i2, opcode) = le_u16(i2)?;
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362 let (i2, size) = le_u16(i2)?;
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363 // FIXME: this - 8 can trigger a panic, fuzz it!
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364 let data = &i2[..size as usize - 8];
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365 let (data, instr) = parse_main_instruction_args(data, opcode)?;
f6bfc9e6dab0 Add an ECL parser.
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366 assert_eq!(data.len(), 0);
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367 instructions.push(CallMain { time, sub, instr });
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368 i = &i[size as usize..];
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369 }
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370 mains.push(Main { instructions });
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371 }
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372
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373 let ecl = Ecl {
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374 subs,
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375 mains,
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376 };
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377 Ok((b"", ecl))
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378 }
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379
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diff changeset
380 #[cfg(test)]
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381 mod tests {
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382 use super::*;
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383 use std::io::{self, Read};
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384 use std::fs::File;
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385
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386 #[test]
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387 fn ecl() {
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388 let file = File::open("EoSD/ST/ecldata1.ecl").unwrap();
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389 let mut file = io::BufReader::new(file);
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390 let mut buf = vec![];
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391 file.read_to_end(&mut buf).unwrap();
f6bfc9e6dab0 Add an ECL parser.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
392 let (_, ecl) = Ecl::from_slice(&buf).unwrap();
f6bfc9e6dab0 Add an ECL parser.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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393 assert_eq!(ecl.subs.len(), 24);
f6bfc9e6dab0 Add an ECL parser.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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394 assert_eq!(ecl.mains.len(), 1);
f6bfc9e6dab0 Add an ECL parser.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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395 }
f6bfc9e6dab0 Add an ECL parser.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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396 }