Add optional file logging and fix board offsets

Introduce --log CLI flag to enable logging to
war_in_tunnels.log via simplelog.

.gitignore

@@ -1,2 +1,4 @@
 /target
 /result
+
+war_in_tunnels.log

Cargo.lock

@@ -1245,6 +1245,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "simplelog"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16257adbfaef1ee58b1363bdc0664c9b8e1e30aed86049635fb5f147d065a9c0"
+dependencies = [
+ "log",
+ "termcolor",
+ "time",
+]
+
 [[package]]
 name = "siphasher"
 version = "1.0.2"
@@ -1312,6 +1323,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "terminfo"
 version = "0.9.0"
@@ -1422,12 +1442,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
+ "itoa",
  "libc",
  "num-conv",
  "num_threads",
  "powerfmt",
  "serde_core",
  "time-core",
+ "time-macros",
 ]
 
 [[package]]
@@ -1436,6 +1458,16 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7694e1cfe791f8d31026952abf09c69ca6f6fa4e1a1229e18988f06a04a12dca"
 
+[[package]]
+name = "time-macros"
+version = "0.2.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e70e4c5a0e0a8a4823ad65dfe1a6930e4f4d756dcd9dd7939022b5e8c501215"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "typenum"
 version = "1.19.0"
@@ -1521,7 +1553,9 @@ name = "war_in_tunnels"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "log",
  "ratatui",
+ "simplelog",
 ]
 
 [[package]]
@@ -1715,6 +1749,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"

Cargo.toml

@@ -12,3 +12,6 @@ strip = true
 [dependencies]
 clap = { version = "4.5.53", features = ["derive"] }
 ratatui = "0.30.0"
+
+log = "0.4.29"
+simplelog = "0.12.2"

src/app/widgets/board.rs

@@ -23,13 +23,13 @@ impl BoardWidget {
         let rows: u16 = area_height / CELL_HIGHT;
         let cols: u16 = area_width / CELL_WIDTH;
 
-        let h_max_offset: usize = if app.states.settings.map_height as u16 > rows {
+        let v_max_offset: usize = if app.states.settings.map_height as u16 > rows {
             app.states.settings.map_height as u16 - rows
         } else {
             0
         } as usize;
 
-        let v_max_offset: usize = if app.states.settings.map_width as u16 > cols {
+        let h_max_offset: usize = if app.states.settings.map_width as u16 > cols {
             app.states.settings.map_width as u16 - cols
         } else {
             0

src/cli.rs

@@ -97,6 +97,13 @@ pub struct Cli {
         default_value = "120"
     )]
     pub skill_points_limit: u16,
+
+    #[arg(
+        long,
+        help = "Enable logging to file (default: disabled)",
+        default_value_t = false
+    )]
+    pub log: bool,
 }
 
 pub fn get_args() -> Cli {

src/lib.rs

@@ -1,2 +1,3 @@
 pub mod app;
 pub mod cli;
+pub mod logs;

src/logs.rs

@@ -0,0 +1,11 @@
+use simplelog::{Config, LevelFilter, WriteLogger};
+use std::fs::File;
+
+pub fn init_logger() {
+    WriteLogger::init(
+        LevelFilter::Info,
+        Config::default(),
+        File::create("war_in_tunnels.log").expect("Failed to create log file"),
+    )
+    .expect("Failed to initialize logger");
+}

src/main.rs

@@ -7,10 +7,15 @@ use std::{
 use war_in_tunnels::{
     app::{App, Event, handle_input_events},
     cli::{Cli, get_args},
+    logs::init_logger,
 };
 
 fn main() -> Result<()> {
     let args: Cli = get_args();
+    if args.log {
+        init_logger();
+    }
+
     let mut terminal: Terminal<CrosstermBackend<Stdout>> = ratatui::init();
     let mut app: App = App::new(args);