/**
* Updates fog/shroud based on the undo stack, then updates stack as needed.
* Call this when "updating shroud now".
* This may fire events and change the game state.
* @param[in] is_replay Set to true when this is called during a replay.
*/
void undo_list::commit_vision()
{
// Update fog/shroud.
bool cleared_something = apply_shroud_changes();
if (cleared_something) {
// The actions that led to information being revealed can no longer
// be undone.
undos_.clear();
//undos_.erase(undos_.begin(), undos_.begin() + erase_to);
committed_actions_ = true;
}
}
/**
* Clears the stack of undoable (and redoable) actions.
* (Also handles updating fog/shroud if needed.)
* Call this if an action alters the game state, but add that action to the
* stack before calling this (if the action is a kind that can be undone).
* This may fire events and change the game state.
*/
void undo_list::clear()
{
// The fact that this function was called indicates that something was done.
// (Some actions, such as attacks, are never put on the stack.)
committed_actions_ = true;
// We can save some overhead by not calling apply_shroud_changes() for an
// empty stack.
if ( !undos_.empty() ) {
apply_shroud_changes();
undos_.clear();
}
// No special handling for redos, so just clear that stack.
redos_.clear();
}
/**
* Updates fog/shroud based on the undo stack, then updates stack as needed.
* Call this when "updating shroud now".
* This may fire events and change the game state.
* @param[in] is_replay Set to true when this is called during a replay.
*/
void undo_list::commit_vision()
{
// Update fog/shroud.
size_t erase_to = apply_shroud_changes();
if ( erase_to != 0 ) {
// The actions that led to information being revealed can no longer
// be undone.
undos_.erase(undos_.begin(), undos_.begin() + erase_to);
committed_actions_ = true;
}
// Record that vision was updated.
add_update_shroud();
}
