Monsters move after the player moved

this allows direct counter attack or fleeing

src/game.rs

@@ -199,11 +199,13 @@ impl Game {
         }
     }
     /// updates the player's current level. This will remove collected artifacts and dead monsters.
-    pub fn update_level(&mut self, ticks: u128) {
+    /// ticks is measuring the progress of the game even if the player is not moving, player_moved
+    /// indicates the player moved
+    pub fn update_level(&mut self, ticks: u128, player_moved: bool) {
         let player_pos = &self.player.get_immutable_position();
         let player_level = player_pos.get_level();
         let level = &mut self.levels[player_level];
-        level.update(ticks, &mut self.player, &mut self.messages);
+        level.update(ticks, player_moved, &mut self.player, &mut self.messages);
     }
 }
 

src/level.rs

@@ -109,7 +109,7 @@ impl Level {
             }
         }
     }
-    pub fn update(&mut self, ticks: u128, player: &mut Player, messages: &mut Vec<String>) {
+    pub fn update(&mut self, ticks: u128, player_moved: bool, player: &mut Player, messages: &mut Vec<String>) {
         for (index, a) in &mut self.artifacts.iter().enumerate() {
             if a.was_collected() {
                 self.artifacts.remove(index);
@@ -120,7 +120,8 @@ impl Level {
             if self.monsters[index].is_dead() {
                 continue;
             }
-            if ticks % self.monsters[index].get_ticks_between_steps() != 0 {
+            // if the player moved, the monsters move as well all the time
+            if !player_moved && ticks % self.monsters[index].get_ticks_between_steps() != 0 {
                 continue;
             }
             loop {

src/main.rs

@@ -132,6 +132,7 @@ fn main() -> Result<()> {
                 messages_area,
             );
         })?;
+        let mut player_moved = false;
         if event::poll(std::time::Duration::from_millis(FRAME_LENGTH))? {
             if let event::Event::Key(key) = event::read()? {
                 if key.kind == KeyEventKind::Press && key.code == KeyCode::Char('v') {
@@ -149,10 +150,22 @@ fn main() -> Result<()> {
                 }
                 if key.kind == KeyEventKind::Press {
                     let new_pos = match key.code {
-                        KeyCode::Left => { game.move_player(-1, 0) }
-                        KeyCode::Right => { game.move_player(1, 0) }
-                        KeyCode::Up => { game.move_player(0, -1) }
-                        KeyCode::Down => { game.move_player(0, 1) }
+                        KeyCode::Left => {
+                            player_moved = true;
+                            game.move_player(-1, 0)
+                        }
+                        KeyCode::Right => {
+                            player_moved = true;
+                            game.move_player(1, 0)
+                        }
+                        KeyCode::Up => {
+                            player_moved = true;
+                            game.move_player(0, -1)
+                        }
+                        KeyCode::Down => {
+                            player_moved = true;
+                            game.move_player(0, 1)
+                        }
                         _ => { (0, 0) }
                     };
                     if !game.player_fights_monster() {
@@ -163,7 +176,7 @@ fn main() -> Result<()> {
                 }
             }
         }
-        game.update_level(ticks);
+        game.update_level(ticks, player_moved);
         if game.get_game_state() != GameState::RUNNING {
             break;
         }