Add support for recording "TerrainState::In" and GameRecord version support system.

src/main.rs

@@ -2,7 +2,7 @@ mod calculator;
 mod gamelog;
 
 use clap::Parser;
-use gamelog::LogFile;
+use gamelog::{GAMELOG_MIN_VER, LogFile};
 use std::path::PathBuf;
 
 #[derive(Debug, Parser)]
@@ -12,9 +12,9 @@ struct Args {
         short,
         long,
         value_hint = clap::ValueHint::DirPath,
-        default_value = std::env::current_dir()
+        default_value = dbg!(format!("{}/templates/logfile.ron", std::env::current_dir()
             .expect("Failed to get current working dir.")
-            .into_os_string()
+            .into_os_string().to_str().unwrap()))
     )]
     logfile_path: PathBuf,
 }
@@ -22,7 +22,7 @@ struct Args {
 fn main() {
     let config = Args::parse();
 
-    let log: LogFile = LogFile::try_from(
+    let mut log: LogFile = LogFile::try_from(
         match std::fs::OpenOptions::new() // Defaults to setting all options false.
             .read(true) // Only need ensure that reading is possible.
             .open(&config.logfile_path.as_path())
@@ -32,4 +32,14 @@ fn main() {
         },
     )
     .expect("Failed to open game log file");
+
+    let log_ver = dbg!(log.get_min_ver());
+
+    if log_ver.cmp_precedence(&GAMELOG_MIN_VER).is_lt() {
+        panic!(
+            "Error: Log file GameRecord version deviates as low as {:?}, while minimum {:?} is required",
+            log_ver.to_string(),
+            GAMELOG_MIN_VER.to_string()
+        )
+    }
 }