author | unC0Rr |
Mon, 20 May 2024 14:58:30 +0200 | |
changeset 16016 | 4933920eba89 |
parent 15890 | 8a6a2d931bae |
permissions | -rw-r--r-- |
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extern crate libloading; |
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use libloading::{Library, Symbol}; |
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use std::ops::Deref; |
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use std::cmp::{min,max}; |
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use std::env; |
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use getopts::Options; |
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use std::io::prelude::*; |
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use std::io::{self, Read}; |
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use std::net::{Shutdown, TcpStream}; |
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struct EngineInstance {} |
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struct Engine<'a> { |
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protocol_version: Symbol<'a, unsafe fn() -> u32>, |
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start_engine: Symbol<'a, unsafe fn() -> *mut EngineInstance>, |
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generate_preview: Symbol<'a, unsafe fn(engine_state: &mut EngineInstance, preview: &mut PreviewInfo)>, |
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dispose_preview: Symbol<'a, unsafe fn(engine_state: &mut EngineInstance, preview: &mut PreviewInfo)>, |
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cleanup: Symbol<'a, unsafe fn(engine_state: *mut EngineInstance)>, |
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send_ipc: Symbol<'a, unsafe fn(engine_state: &mut EngineInstance, buf: *const u8, size: usize)>, |
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read_ipc: Symbol<'a, unsafe fn(engine_state: &mut EngineInstance, buf: *mut u8, size: usize) -> usize>, |
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} |
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#[repr(C)] |
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#[derive(Copy, Clone)] |
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struct PreviewInfo { |
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width: u32, |
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height: u32, |
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hedgehogs_number: u8, |
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land: *const u8, |
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} |
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const PREVIEW_WIDTH: u32 = 256; |
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const PREVIEW_HEIGHT: u32 = 128; |
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const PREVIEW_NPIXELS: usize = (PREVIEW_WIDTH * PREVIEW_HEIGHT) as usize; |
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const SCALE_FACTOR: u32 = 16; |
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const VALUE_PER_INPIXEL: u8 = 1; |
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/// Resizes the land preview from the library into appropriate format for --preview command. |
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/// |
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/// # Arguments |
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/// |
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/// * `mono_pixels` - Raw pixels of a land preview (monochrome, 0 = empty, else = filled) |
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/// * `in_width` - Width of the preview stored in `mono_pixels` |
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/// * `in_height` - Height of the preview stored in `mono_pixels` |
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/// * `preview_pixels` - Used as **output** for a resized and (kinda) anti-aliased grayscale preview |
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fn resize_mono_preview(mono_pixels: &[u8], in_width: u32, in_height: u32, preview_pixels: &mut [u8]) { |
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assert!(mono_pixels.len() == (in_width * in_height) as usize); |
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let v_offset: u32 = max(0, PREVIEW_HEIGHT as i64 - (in_height / SCALE_FACTOR) as i64) as u32; |
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let h_offset: u32 = max(0, (PREVIEW_WIDTH as i64 / 2) - (in_width / SCALE_FACTOR / 2) as i64) as u32; |
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for y in v_offset..PREVIEW_HEIGHT { |
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let in_y = v_offset + (y * SCALE_FACTOR); |
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for x in h_offset..(PREVIEW_WIDTH - h_offset) { |
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let in_x = h_offset + (x * SCALE_FACTOR); |
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let out_px_address = (PREVIEW_WIDTH * y + x) as usize; |
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let mut in_px_address = (in_width * in_y + in_x) as usize; |
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let mut value = 0; |
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for i in 0..SCALE_FACTOR as usize { |
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for j in 0..SCALE_FACTOR as usize { |
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if (value < 0xff) && (mono_pixels[in_px_address + j] != 0) { |
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value += VALUE_PER_INPIXEL; |
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} |
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} |
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in_px_address += in_width as usize; |
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} |
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preview_pixels[out_px_address] = value; |
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} |
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} |
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} |
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fn main() { |
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let hwlib = Library::new("libhedgewars_engine.so").unwrap(); |
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unsafe { |
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let engine = Engine { |
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protocol_version: hwlib.get(b"hedgewars_engine_protocol_version").unwrap(), |
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start_engine: hwlib.get(b"start_engine").unwrap(), |
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generate_preview: hwlib.get(b"generate_preview").unwrap(), |
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dispose_preview: hwlib.get(b"dispose_preview").unwrap(), |
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cleanup: hwlib.get(b"cleanup").unwrap(), |
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send_ipc: hwlib.get(b"send_ipc").unwrap(), |
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read_ipc: hwlib.get(b"read_ipc").unwrap(), |
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}; |
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println!("Hedgewars engine, protocol version {}", engine.protocol_version.deref()()); |
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let args: Vec<String> = env::args().collect(); |
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let mut opts = getopts::Options::new(); |
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opts.optflag("", "internal", "[internal]"); |
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opts.optflag("", "landpreview", "[internal]"); |
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opts.optflag("", "recorder", "[internal]"); |
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opts.optopt("", "port", "[internal]", "PORT"); |
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opts.optopt("", "user-prefix", "Set the path to the custom data folder to find game content", "PATH_TO_FOLDER"); |
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opts.optopt("", "prefix", "Set the path to the system game data folder", "PATH_TO_FOLDER"); |
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let matches = match opts.parse(&args[1..]) { |
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Ok(m) => { m } |
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Err(f) => { panic!(f.to_string()) } |
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}; |
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let engine_state = &mut *engine.start_engine.deref()(); |
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let port: String = matches.opt_str("port").expect("Need IPC port number!"); |
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println!("PORT: {}", port); |
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if matches.opt_present("landpreview") { |
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let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port)).expect("Failed to connect to IPC port. Feelsbadman."); |
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122 |
|
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123 |
//stream.write(b"\x01C").unwrap(); // config |
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//stream.write(b"\x01?").unwrap(); // ping |
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125 |
|
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let mut buf = [0;1]; |
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127 |
loop { |
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let bytes_read = stream.read(&mut buf).unwrap(); |
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if bytes_read == 0 { |
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130 |
break; |
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131 |
} |
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132 |
engine.send_ipc.deref()(engine_state, &buf[0], buf.len()); |
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133 |
// this looks like length 1 is being announced |
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if buf[0] == 1 { |
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let bytes_read = stream.read(&mut buf).unwrap(); |
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if bytes_read == 0 { |
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137 |
break; |
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138 |
} |
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if buf[0] == 33 { |
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140 |
println!("Ping? Pong!"); |
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141 |
break; |
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142 |
} |
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143 |
} |
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144 |
}; |
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145 |
|
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146 |
let preview_info = &mut PreviewInfo { |
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147 |
width: 0, |
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148 |
height: 0, |
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149 |
hedgehogs_number: 0, |
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150 |
land: std::ptr::null(), |
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151 |
}; |
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152 |
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println!("Generating preview..."); |
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154 |
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engine.generate_preview.deref()(engine_state, preview_info); |
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156 |
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157 |
//println!("Preview: w = {}, h = {}, n = {}", preview_info.width, preview_info.height, preview_info.hedgehogs_number); |
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158 |
|
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159 |
let land_size: usize = (preview_info.width * preview_info.height) as usize; |
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160 |
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161 |
let land_array: &[u8] = std::slice::from_raw_parts(preview_info.land, land_size); |
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162 |
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163 |
const PREVIEW_WIDTH: u32 = 256; |
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const PREVIEW_HEIGHT: u32 = 128; |
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165 |
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println!("Resizing preview..."); |
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167 |
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let preview_image: &mut [u8] = &mut [0; PREVIEW_NPIXELS]; |
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resize_mono_preview(land_array, preview_info.width, preview_info.height, preview_image); |
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170 |
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171 |
println!("Sending preview..."); |
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172 |
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stream.write(preview_image).unwrap(); |
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174 |
stream.flush().unwrap(); |
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175 |
stream.write(&[preview_info.hedgehogs_number]).unwrap(); |
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176 |
stream.flush().unwrap(); |
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177 |
|
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178 |
println!("Preview sent, disconnect"); |
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179 |
|
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180 |
stream.shutdown(Shutdown::Both).expect("IPC shutdown call failed"); |
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181 |
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182 |
engine.dispose_preview.deref()(engine_state, preview_info); |
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183 |
} |
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184 |
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185 |
engine.cleanup.deref()(engine_state); |
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} |
187 |
} |