add: assets, some changes

src/main.rs

@@ -17,6 +17,7 @@ pub fn main() -> Result<(), String> {
         .window("rust-sdl2 demo: Video", 1024, 600)
         .position_centered()
         .opengl()
+        .fullscreen()
         .build()
         .map_err(|e| e.to_string())?;
 
@@ -195,6 +196,12 @@ pub fn main() -> Result<(), String> {
             .load_texture_bytes(include_bytes!("../assets/dog.png"))
             .unwrap(),
     );
+    textures.insert(
+        "heart",
+        texture_creator
+            .load_texture_bytes(include_bytes!("../assets/heart.png"))
+            .unwrap(),
+    );
 
     let opts: Vec<&str> = textures.keys().map(|s| *s).collect();
 
@@ -251,26 +258,41 @@ pub fn main() -> Result<(), String> {
             }
         }
 
+        // Find the most-exact match to show
         let mut matches = vec![];
-        let mut skip_chars = 0;
         let mut chars = line.chars();
         for i in 0..line.len() {
             let part_line = find_matches(chars.as_str(), &opts);
             for part in part_line {
                 matches.push((i, part));
             }
-            if matches.len() == 0 {
-                // Advance the line so we don't leak chars
-                skip_chars = i;
-            }
             chars.next();
         }
         let matches: Vec<&str> = matches.into_iter().map(|(_, s)| s).collect();
         let show = if matches.len() > 0 { matches[0] } else { "" };
-        // Discard extra characters from line
+
+        // Discard extra characters from line; find any lines that could match
+        // and discard up to there
+        let mut skip_chars = 0;
+        let mut chars = line.chars();
+        for i in 0..line.len() {
+            let part_line = find_could_match(chars.as_str(), &opts);
+            if part_line.len() == 0 {
+                // Advance the line so we don't leak chars
+                skip_chars = i;
+            } else {
+                break;
+            }
+            chars.next();
+        }
         let (_, tline) = line.split_at(skip_chars);
         line = String::from(tline);
 
+
+        //println!("Show {show}");
+        //println!("Matches {:?}", matches);
+        //println!("Line {line}");
+
         canvas.clear();
         if let Some(tex) = textures.get(show) {
             canvas.copy(tex, None, None).unwrap();
@@ -295,3 +317,17 @@ fn find_matches<'a, 'b>(word: &'b str, opts: &'a [&'a str]) -> Vec<&'a str> {
     }
     ret
 }
+
+
+fn find_could_match<'a, 'b>(word: &'b str, opts: &'a [&'a str]) -> Vec<&'a str> {
+    if word.len() == 0 {
+        return vec![];
+    }
+    let mut ret = vec![];
+    for opt in opts {
+        if opt.starts_with(word) {
+            ret.push(*opt)
+        }
+    }
+    ret
+}