Add "dont snap" callback to prevent snapshot creation.

Use it for Columbia simultaneous card selection states to prevent the
"duplicate" snapshot when going from both player selecting to the
remaining player only.

1 files changed, 11 insertions, 1 deletions

diff --git a/tools/patchgame.js b/tools/patchgame.js
index c2b0802..1426a75 100755
--- a/tools/patchgame.js
+++ b/tools/patchgame.js
@@ -89,6 +89,16 @@ function is_valid_action(rules, state, role, action, arg) {
 	return false
 }
 
+function dont_snap(rules, state, old_active) {
+	if (state.state === "game_over")
+		return true
+	if (state.active === old_active)
+		return true
+	if (rules.dont_snap && rules.dont_snap(state))
+		return true
+	return false
+}
+
 function patch_game(game_id, {validate_actions=true, save_snaps=true, delete_undo=false, delete_invalid=false}, verbose) {
 	let game = select_game.get(game_id)
 	if (!game) {
@@ -142,7 +152,7 @@ function patch_game(game_id, {validate_actions=true, save_snaps=true, delete_und
 
 			item.state = snapshot(state)
 			item.checksum = crc32c(item.state)
-			if (old_active !== state.active)
+			if (!dont_snap(rules, state, old_active))
 				item.save = 1
 			old_active = state.active