Placing items

src/main.rs

@@ -7,6 +7,7 @@ use rand::Rng;
 use std::cmp;
 use tcod::colors::*;
 use tcod::console::*;
+use tcod::input::{self, Event, Key, Mouse};
 use tcod::map::{FovAlgorithm, Map as FovMap};
 
 const SCREEN_WIDTH: i32 = 80;
@@ -51,6 +52,8 @@ struct Tcod {
   con: Offscreen,
   panel: Offscreen,
   fov: FovMap,
+  key: Key,
+  mouse: Mouse,
 }
 
 #[derive(Debug)]
@@ -271,10 +274,8 @@ fn handle_keys(tcod: &mut Tcod, game: &mut Game, objects: &mut Vec<Object>) -> P
   use tcod::input::KeyCode::*;
   use PlayerAction::*;
 
-  let key = tcod.root.wait_for_keypress(true);
   let player_alive = objects[PLAYER].alive;
-
-  match (key, key.text(), player_alive) {
+  match (tcod.key, tcod.key.text(), player_alive) {
     (
       Key {
         code: Enter,
@@ -556,6 +557,19 @@ fn render_bar(
   );
 }
 
+fn get_names_under_mouse(mouse: Mouse, objects: &[Object], fov_map: &FovMap) -> String {
+  let (x, y) = (mouse.cx as i32, mouse.cy as i32);
+
+  // Create a list with the names of all objects at the mouse's coordinates and in FOV
+  let names = objects
+    .iter()
+    .filter(|obj| obj.pos() == (x, y) && fov_map.is_in_fov(obj.x, obj.y))
+    .map(|obj| obj.name.clone())
+    .collect::<Vec<_>>();
+
+  names.join(", ")
+}
+
 fn render_all(tcod: &mut Tcod, game: &mut Game, objects: &[Object], fov_recompute: bool) {
   if fov_recompute {
     let player = &objects[PLAYER];
@@ -633,6 +647,16 @@ fn render_all(tcod: &mut Tcod, game: &mut Game, objects: &[Object], fov_recomput
     DARKER_RED,
   );
 
+  // Display names of objects under the mouse
+  tcod.panel.set_default_foreground(LIGHT_GREY);
+  tcod.panel.print_ex(
+    1,
+    0,
+    BackgroundFlag::None,
+    TextAlignment::Left,
+    get_names_under_mouse(tcod.mouse, objects, &tcod.fov),
+  );
+
   // Print the game messages, one line at a time
   let mut y = MSG_HEIGHT as i32;
   for &(ref msg, color) in game.messages.iter().rev() {
@@ -672,6 +696,8 @@ fn main() {
     con: Offscreen::new(MAP_WIDTH, MAP_HEIGHT),
     panel: Offscreen::new(SCREEN_WIDTH, PANEL_HEIGHT),
     fov: FovMap::new(MAP_WIDTH, MAP_HEIGHT),
+    key: Default::default(),
+    mouse: Default::default(),
   };
 
   // Create player object
@@ -716,8 +742,13 @@ fn main() {
 
   // Main game loop
   while !tcod.root.window_closed() {
-    tcod.con.clear();
+    match input::check_for_event(input::MOUSE | input::KEY_PRESS) {
+      Some((_, Event::Mouse(m))) => tcod.mouse = m,
+      Some((_, Event::Key(k))) => tcod.key = k,
+      _ => tcod.key = Default::default(),
+    }
 
+    tcod.con.clear();
     let fov_recompute = previous_player_position != (objects[PLAYER].pos());
     render_all(&mut tcod, &mut game, &objects, fov_recompute);
     tcod.root.flush();