tested traditional chess knight movement

src/apr.rs

@@ -58,6 +58,14 @@ impl Apr {
                 vec![(1, -1), (-1, -1)],
             ));
         }
+        for i in 0..=1 {
+            // white side knights
+            actors.push(actor::Actor::new(_ctx, "/pawn.png", i, 0, 0));
+            behaviours.push(behaviour::Behaviour::new(
+                vec![(1, 2)],
+                vec![(1, -1), (-1, -1)],
+            ));
+        }
         for i in 0..r {
             // black side pawns
             actors.push(actor::Actor::new(_ctx, "/pawn2.png", i, c - 2, 0));
@@ -66,6 +74,15 @@ impl Apr {
                 vec![(1, 1), (-1, 1)],
             ));
         }
+        for i in 0..=1 {
+            // black side knights
+            actors.push(actor::Actor::new(_ctx, "/pawn2.png", i, c - 1, 0));
+            behaviours.push(behaviour::Behaviour::new(
+                vec![(1, 2)],
+                vec![(1, 1), (-1, 1)],
+            ));
+        }
+
         Ok(Apr {
             grid: make_grid(_ctx, r, c, board.board.as_slice())?,
             board,

src/behaviour.rs

@@ -16,8 +16,8 @@ impl Behaviour {
                 // mind blanking need to add something to confirm which direction we are iterating through
                 // println!("Permissible: ({}, {})",(origin.0 as i8) + dir.0 * moveset.0,(origin.1 as i8) - dir.1 * moveset.1);
                 if (
-                    ((origin.0 as i8) + dir.0 * moveset.0) as u8,
-                    ((origin.1 as i8) - dir.1 * moveset.1) as u8,
+                    ((origin.0 as i8) + moveset.0 * dir.0) as u8,
+                    ((origin.1 as i8) - moveset.1 * dir.1) as u8,
                 ) == destination
                 {
                     return true;