Auto-call coin flips for win/lose outcomes

forge-gui-desktop/src/main/java/forge/screens/home/settings/CSubmenuPreferences.java

@@ -152,6 +152,7 @@ public void initialize() {
         lstControls.add(Pair.of(view.getCbTokensInSeparateRow(), FPref.UI_TOKENS_IN_SEPARATE_ROW));
         lstControls.add(Pair.of(view.getCbSeparateCombatStacks(), FPref.UI_SEPARATE_COMBAT_STACKS));
         lstControls.add(Pair.of(view.getCbManaLostPrompt(), FPref.UI_MANA_LOST_PROMPT));
+        lstControls.add(Pair.of(view.getCbAutoCallCoinFlip(), FPref.UI_AUTO_CALL_COIN_FLIP));
         lstControls.add(Pair.of(view.getCbEscapeEndsTurn(), FPref.UI_ALLOW_ESC_TO_END_TURN));
         lstControls.add(Pair.of(view.getCbDetailedPaymentDesc(), FPref.UI_DETAILED_SPELLDESC_IN_PROMPT));
         lstControls.add(Pair.of(view.getCbGrayText(), FPref.UI_GRAY_INACTIVE_TEXT));

forge-gui-desktop/src/main/java/forge/screens/home/settings/VSubmenuPreferences.java

@@ -76,6 +76,7 @@ public enum VSubmenuPreferences implements IVSubmenu<CSubmenuPreferences> {
     private final JCheckBox cbManaBurn = new OptionsCheckBox(localizer.getMessage("cbManaBurn"));
     private final JCheckBox cbOrderCombatants = new OptionsCheckBox(localizer.getMessage("cbOrderCombatants"));
     private final JCheckBox cbManaLostPrompt = new OptionsCheckBox(localizer.getMessage("cbManaLostPrompt"));
+    private final JCheckBox cbAutoCallCoinFlip = new OptionsCheckBox(localizer.getMessage("cbAutoCallCoinFlip"));
     private final JCheckBox cbDevMode = new OptionsCheckBox(localizer.getMessage("cbDevMode"));
     private final JCheckBox cbLoadCardsLazily = new OptionsCheckBox(localizer.getMessage("cbLoadCardsLazily"));
     private final JCheckBox cbLoadArchivedFormats = new OptionsCheckBox(localizer.getMessage("cbLoadArchivedFormats"));
@@ -249,6 +250,9 @@ public enum VSubmenuPreferences implements IVSubmenu<CSubmenuPreferences> {
         pnlPrefs.add(cbManaLostPrompt, titleConstraints);
         pnlPrefs.add(new NoteLabel(localizer.getMessage("nlManaLostPrompt")), descriptionConstraints);
 
+        pnlPrefs.add(cbAutoCallCoinFlip, titleConstraints);
+        pnlPrefs.add(new NoteLabel(localizer.getMessage("nlAutoCallCoinFlip")), descriptionConstraints);
+
         pnlPrefs.add(cbpStackAdditions, comboBoxConstraints);
         pnlPrefs.add(new NoteLabel(localizer.getMessage("nlpStackAdditions")), descriptionConstraints);
 
@@ -1075,6 +1079,10 @@ public final JCheckBox getCbManaLostPrompt() {
     	return cbManaLostPrompt;
     }
 
+    public final JCheckBox getCbAutoCallCoinFlip() {
+        return cbAutoCallCoinFlip;
+    }
+
     public final JCheckBox getCbDetailedPaymentDesc() {
         return cbDetailedPaymentDesc;
     }

forge-gui/res/languages/en-US.properties

@@ -94,6 +94,7 @@ cbEnableAICheats=Allow AI Cheating
 cbManaBurn=Mana Burn
 cbOrderCombatants=Order Combatants
 cbManaLostPrompt=Prompt Mana Pool Emptying
+cbAutoCallCoinFlip=Auto-Call Coin Flips
 cbDevMode=Developer Mode
 cbLoadCardsLazily=Load Card Scripts Lazily
 cbLoadArchivedFormats=Load Archived Formats
@@ -207,6 +208,7 @@ nlEnableAICheats=Allow the AI to cheat to gain advantage (for personalities that
 nlManaBurn=Play with mana burn (from pre-Magic 2010 rules).
 nlOrderCombatants=Play with legacy ordering combatants (rule from Magic 2010 to pre-Foundations).
 nlManaLostPrompt=When enabled, you get a warning if passing priority would cause you to lose mana in your mana pool.
+nlAutoCallCoinFlip=Automatically call Heads on coin flips where only the win/lose outcome matters (e.g. Krark's Thumb). Disable to manually choose each call.
 nlEnforceDeckLegality=Enforces deck legality relevant to each environment (minimum deck sizes, max card count etc).
 nlpAiSideboardingMode=Choose the way the AI sideboards: Off (the AI doesn't sideboard), AI (the AI sideboards for itself, currently mostly random), Human For AI (the human player sideboards for the AI in Constructed formats).
 nlExperimentalRestore=EXPERIMENTAL - Stores a snapshot to be used for undoing spells or abilities

forge-gui/src/main/java/forge/localinstance/properties/ForgePreferences.java

@@ -126,6 +126,7 @@ public enum FPref implements PreferencesStore.IPref {
         UI_ALLOW_ESC_TO_END_TURN ("false"),
         UI_ALT_PLAYERINFOLAYOUT ("false"),
         UI_ALT_PLAYERZONETABS ("false"),
+        UI_AUTO_CALL_COIN_FLIP ("true"),
         YIELD_INTERRUPT_ON_ATTACKERS ("true"),
         YIELD_INTERRUPT_ON_OPPONENT_SPELL ("true"),
         YIELD_INTERRUPT_ON_TARGETING ("false"),

forge-gui/src/main/java/forge/player/PlayerControllerHuman.java

@@ -1853,6 +1853,9 @@ public boolean chooseBinary(final SpellAbility sa, final String question, final
         final List<String> labels;
         switch (kindOfChoice) {
             case HeadsOrTails:
+                if (FModel.getPreferences().getPrefBoolean(FPref.UI_AUTO_CALL_COIN_FLIP)) {
+                    return true; // Auto-call Heads — for win/lose flips the call is irrelevant (50/50)
+                }
                 labels = ImmutableList.of(localizer.getMessage("lblHeads"), localizer.getMessage("lblTails"));
                 break;
             case TapOrUntap:
@@ -1888,6 +1891,12 @@ public boolean chooseBinary(final SpellAbility sa, final String question, final
 
     @Override
     public boolean chooseFlipResult(final SpellAbility sa, final Player flipper, final boolean call) {
+        // Krark's Thumb / Frenetic Efreet replacement effect: choose which of two flips to keep.
+        // For called flips (heads/tails was called), we already auto-called Heads above, so picking
+        // the matching result guarantees a "win". For NoCall flips, the player still chooses.
+        if (call && FModel.getPreferences().getPrefBoolean(FPref.UI_AUTO_CALL_COIN_FLIP)) {
+            return true;
+        }
         final List<String> labelsSrc = call ? List.of(localizer.getMessage("lblHeads"), localizer.getMessage("lblTails"))
                 : List.of(localizer.getMessage("lblWinTheFlip"), localizer.getMessage("lblLoseTheFlip"));
         return getGui().one(sa.getHostCard().getDisplayName() + " - " + localizer.getMessage("lblChooseAResult"), labelsSrc).equals(labelsSrc.get(0));