fix: re-implement selecting specific cards from stacks

.gitignore

@@ -1,2 +1,2 @@
 zig-out/
-zig-cache/
+.zig-cache/

build.zig

@@ -44,7 +44,7 @@ pub fn addSeizerSolitaireExe(b: *std.Build, install_step: *std.Build.Step, optio
 
     const exe = b.addExecutable(.{
         .name = "seizer-solitaire",
-        .root_source_file = .{ .path = "src/main.zig" },
+        .root_source_file = b.path("src/main.zig"),
         .target = options.target,
         .optimize = options.optimize,
     });

build.zig.zon

@@ -16,8 +16,8 @@
     // internet connectivity.
     .dependencies = .{
         .seizer = .{
-            .url = "https://github.com/leroycep/seizer/archive/54a39bf2c2f867a2caa69c4a63fa4732ebc7ac71.tar.gz",
+            .url = "https://github.com/leroycep/seizer/archive/e065ae24f5ae4be546c6f1eb170677b0ac835452.tar.gz",
-            .hash = "12208d8ee636719b6b4fbb75014cfaa9aa0d9557d2ca4e160ad245825eaa20849b48",
+            .hash = "12200e611cb9ea7aa15b43cc52a6ff31aa8dbcf33a360c858ea237a6df102ee8da6d",
         },
     },
     .paths = .{

src/main.zig

@@ -582,6 +582,8 @@ pub fn doSelectOrPlace(pressed: bool) !void {
             new_snapshot.selected_card = null;
             try history.append(seizer.platform.allocator(), new_snapshot);
             hovered_card = @intCast(indexOfTopOfStack(new_snapshot.getDeck(hovered_deck.?)));
+        } else {
+            snapshot.selected_card = null;
         }
     }
 }
@@ -653,9 +655,16 @@ pub fn moveUp(pressed: bool) !void {
         return try menu_fn(.up);
     }
 
-    // move which pile is hovered
+    // move which card/pile is hovered
     const snapshot = &history.items[history.items.len - 1];
     if (hovered_deck) |hovered| {
+        if (hovered_card != null and hovered.getDeckKind() == .stack) {
+            const top_of_movable_stack = indexOfTopOfStack(snapshot.getDeck(hovered));
+            if (hovered_card.? > top_of_movable_stack) {
+                hovered_card = hovered_card.? - 1;
+                return;
+            }
+        }
         hovered_deck = hovered.getDeckUpwards(last_hovered_stack);
     } else {
         hovered_deck = .draw_pile;
@@ -682,9 +691,15 @@ pub fn moveDown(pressed: bool) !void {
         return try menu_fn(.down);
     }
 
-    // move which pile is hovered
+    // move which card/pile is hovered
     const snapshot = &history.items[history.items.len - 1];
     if (hovered_deck) |hovered| {
+        if (hovered_card != null and hovered.getDeckKind() == .stack) {
+            if (hovered_card.? + 1 < snapshot.deck_card_count[@intFromEnum(hovered)]) {
+                hovered_card = hovered_card.? + 1;
+                return;
+            }
+        }
         hovered_deck = hovered.getDeckDownwards(last_hovered_stack);
     } else {
         hovered_deck = .draw_pile;