From 1a0924b86bf4c4f542d9b7fbed5e05f8dbc373c9 Mon Sep 17 00:00:00 2001
From: Tom Barrett <tombarrett@siu.edu>
Date: Tue, 24 Oct 2017 09:36:05 -0500
Subject: -centering works more closely

---
 src/main.rs | 21 ++++++++++++++-------
 src/view.rs | 26 ++++++++++++--------------
 2 files changed, 26 insertions(+), 21 deletions(-)

(limited to 'src')

diff --git a/src/main.rs b/src/main.rs
index 81583b8..2e8ca3e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -31,30 +31,37 @@ fn init() -> pancurses::Window {
 fn main() {
 
     let main = init();
-
     let mut map = Map::new();
     let mut view = View::new(main.get_max_yx(), &map.window);
-    let cursor = Character::new('X', 3, Location{x:150,y:150});
 
-    map.fill();
+    let mut cursor = Character::new('X', 3, Location{x:150,y:150});
+
     let list = List::new(map.impassable.to_vec());
-    list.draw(&map.window);
-    cursor.draw(&map.window);
 
     let paused = false;
     loop{
         match main.getch() {
-            Some(Input::Character(c)) => break,
+            Some(Input::Character(c)) => {
+                match c {
+                    'h' => cursor.location.y -= 1,
+                    'l' => cursor.location.y += 1,
+                    'k' => cursor.location.x -= 1,
+                    'j' => cursor.location.x += 1,
+                    'q' => break,
+                    _ => (),
+                }
+            },
             _ => ()
         }
 
         if !paused {
             list.action();
         }
+
         map.fill();
         list.draw(&map.window);
         cursor.draw(&map.window);
-        view.center(cursor, map.window.get_max_yx());
+        view.center(cursor, &map.window);
     }
 
 	endwin();
diff --git a/src/view.rs b/src/view.rs
index 51a052b..acd4807 100644
--- a/src/view.rs
+++ b/src/view.rs
@@ -12,7 +12,7 @@ pub struct View{
 
 impl View{
     pub fn new((x,y) : (i32, i32), map_window : &pancurses::Window) -> View {
-        let window = map_window.derwin(x,y,0,0).expect("help");
+        let window = map_window.derwin(x,y,0,0).expect("Cannot create derwin.");
         View{
             width : 	    x,
             height : 	    y,
@@ -22,40 +22,38 @@ impl View{
         }
     }
 
-    pub fn center(&mut self, character : Character, (hh, ww) : (i32,i32)) {
-        let mut rr = self.row;
-        let mut cc = self.col;
+    pub fn center(&mut self, character : Character, map_window : &pancurses::Window) {
         let r = character.location.x - self.height/2;
         let c = character.location.y - self.width/2;
+
+        let (hh, ww) = map_window.get_max_yx();
         
         if c + self.width >= ww {
             let delta = ww - (c + self.width);
-            cc = c + delta;
+            self.col = c + delta;
         }
         else {
-            cc = c;
+            self.col = c;
         }
 
         if r + self.height >= hh {
             let delta = hh - (r + self.height);
-            rr = r + delta;
+            self.row = r + delta;
         }
         else {
-            rr = r;
+            self.row = r;
         }
 
         if r < 0 {
-            rr = 0;
+            self.row = 0;
         }
 
         if c < 0 {
-            cc = 0;
+            self.col = 0;
         }
         
-        self.window.refresh();
-        self.window.mv(rr, cc);
-        self.row = rr;
-        self.col = cc;
+        self.window.mvderwin(self.row, self.col);
+        map_window.touch();
         self.window.refresh();
     }
 }
-- 
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