Add Spider game variant

ComputerSolitaire/Animation/UndoAnimationCoordinator.swift

@@ -63,6 +63,18 @@ enum UndoAnimationCoordinator {
             }
             return Plan(items: items, targets: targets, needsPostUndoFrames: true)
 
+        case .dealTableauRow:
+            // Spider's dealt row flies from the tableau (or a banked run's pile)
+            // back onto the stock; unlike a waste draw there is no fan position
+            // to fall back to when a card's frame is unknown.
+            for (index, id) in cardIDs.enumerated() {
+                guard let card = beforeCards[id] ?? afterCards[id],
+                      let startFrame = cardFrames[id] else { continue }
+                items.append(UndoAnimationItem(id: id, card: card, startFrame: startFrame, endFrame: startFrame))
+                targets[id] = .stock(index)
+            }
+            return Plan(items: items, targets: targets, needsPostUndoFrames: false)
+
         case .flipTableauTop:
             return Plan(items: [], targets: [:], needsPostUndoFrames: false)
         }

ComputerSolitaire/Animation/WinCelebrationController.swift

@@ -88,7 +88,7 @@ final class WinCelebrationController {
         }
 
         var launchFrames: [Int: CGRect] = [:]
-        for index in 0..<4 {
+        for index in foundations.indices {
             if let frame = dropFrames[.foundation(index)]?.snapFrame, frame != .zero {
                 launchFrames[index] = frame
             }
@@ -159,7 +159,7 @@ final class WinCelebrationController {
         guard boardBounds.width > 0, boardBounds.height > 0 else { return [] }
 
         var launchFrames: [Int: CGRect] = [:]
-        for index in 0..<4 {
+        for index in foundations.indices {
             if let frame = dropFrames[.foundation(index)]?.snapFrame, frame != .zero {
                 launchFrames[index] = frame
             }

ComputerSolitaire/Fixtures/ScreenshotFixtures.swift

@@ -31,7 +31,8 @@ enum ScreenshotFixtures {
     static let bundled: [ScreenshotFixture] = [
         ScreenshotFixture(name: "klondike-draw3", title: "Klondike – Draw 3"),
         ScreenshotFixture(name: "freecell", title: "FreeCell – fresh deal"),
-        ScreenshotFixture(name: "yukon", title: "Yukon – fresh deal")
+        ScreenshotFixture(name: "yukon", title: "Yukon – fresh deal"),
+        ScreenshotFixture(name: "spider", title: "Spider – 2 suits")
     ]
 
     static func payloadFromLaunchArguments() -> SavedGamePayload? {