Fixed "reject move" logic.

Added a system for tracking a pieces last move, which is not
necessary...

src/game.rs

@@ -207,11 +207,6 @@ pub(crate) struct BoardIndex {
     pub y: usize,
 }
 
-#[derive(Debug, Component, PartialEq, Clone, Default, Copy, Eq, Hash)]
-pub(crate) struct Previous {
-    board_index: BoardIndex,
-}
-
 #[derive(Debug, Component, PartialEq, Clone, Copy)]
 pub(crate) enum Side {
     A,
@@ -367,7 +362,7 @@ impl Board {
                             }
                         };
                         if valid_capture {
-                            // You cannot move a piece from SideB->SideA when it was just moved from SideA->SideB
+                            // You cannot move a piece from A to B and then back to A when it was just moved from SideA->SideB
                             // Move rejection is not allowed
                             let rejection = {
                                 if let Some(Move {
@@ -378,8 +373,8 @@ impl Board {
                                 {
                                     // TODO: I think this is more logic than we need to express
                                     // the sentiment...
-                                    Board::side(*last_from) == Board::side(this_board_index)
-                                        && Board::side(*last_to) == Board::side(current_board_index)
+                                    *last_from == this_board_index
+                                        && *last_to == current_board_index
                                         && Board::side(this_board_index)
                                             != Board::side(current_board_index)
                                 } else {
@@ -485,8 +480,8 @@ fn setup_board(mut commands: Commands) {
         inner: vec![
             vec![
                 Some(Queen),
-                None, // Some(Queen),
-                None, // Some(Drone),
+                Some(Queen),
+                Some(Drone),
                 None,
                 None,
                 None,
@@ -494,24 +489,24 @@ fn setup_board(mut commands: Commands) {
                 None,
             ],
             vec![
-                None, // Some(Queen),
-                None, // Some(Drone),
-                None, // Some(Pawn),
-                None, // None,
-                None, // None,
-                None, // Some(Pawn),
-                None, // Some(Pawn),
-                None, // Some(Drone),
+                Some(Queen),
+                Some(Drone),
+                Some(Pawn),
+                None,
+                None,
+                Some(Pawn),
+                Some(Pawn),
+                Some(Drone),
             ],
             vec![
-                None, // Some(Drone),
-                None, // Some(Pawn),
-                None, // Some(Pawn),
-                None, // None,
-                None, // None,
-                None, // Some(Pawn),
-                None, // Some(Drone),
-                None, // Some(Queen),
+                Some(Drone),
+                Some(Pawn),
+                Some(Pawn),
+                None,
+                None,
+                Some(Pawn),
+                Some(Drone),
+                Some(Queen),
             ],
             vec![
                 None,
@@ -519,8 +514,8 @@ fn setup_board(mut commands: Commands) {
                 None,
                 None,
                 None,
-                None, // Some(Drone),
-                None, // Some(Queen),
+                Some(Drone),
+                Some(Queen),
                 Some(Queen),
             ],
         ],
@@ -578,14 +573,6 @@ pub(crate) fn update_board(
     *played = false;
 }
 
-// Track the last spot that a piece was at
-fn track_previous_move(
-    events: Query<&BoardIndex, (With<Piece>, Changed<BoardIndex>)>,
-    mut commands: Commands,
-) {
-    todo!()
-}
-
 #[derive(Debug, Component)]
 struct Endgame;