virtual void Decide(const DataObject &input, DataObject &output)
{
// There are two conditions that must be met in order for a player to
// be allowed to build a knight:
//
// 1) They must have the resources to activate a knight.
// 2) They must have at least one inactive knight on the board
//
// None of these conditions can be affected by other rulesets.
bool can = false;
wxInt32 trades = 0;
// Condition 1.
RULE.Decide(shLogicCanPurchaseActivateKnight, input, output);
wxASSERT(2 <= output.numItems());
if(true == output.read<bool>())
{
trades = output.read<wxInt32>(1);
// Condition 2.
output.reset();
RULE.Decide(shLogicCanPlaceActivateKnight, input, output);
can = (false ==
output.read<PlayerGame::CornerObjectArray>().empty());
}
output = DataObject(can, trades);
}
virtual void Decide(const DataObject &input, DataObject &output)
{
// There are three conditions that must be met in order for a player to
// be allowed to build a road:
//
// 1) They must have at least one road in stock.
// 2) They must have the resources to purchase a road.
// 3) They must have a location on the board to place the road.
//
// Condition 1 is static and cannot be affected by any other rulesets.
// Condition 2 may be affected by other rulesets (i.e. Road Building
// card).
// Condition 3 may be affected by other rulesets (i.e. Seafarers).
bool canBuild = false;
wxInt32 trades = 0;
// Condition 1.
if(0 < playerGameData<wxInt32>(shStockRoads))
{
// Condition 2.
RULE.Decide(shLogicCanPurchaseRoad, input, output);
wxASSERT(2 <= output.numItems());
if(true == output.read<bool>())
{
trades = output.read<wxInt32>(1);
// Condition 3.
output.reset();
RULE.Decide(shLogicCanPlaceRoad, input, output);
typedef std::pair<wxInt32, wxInt32> TileSide;
typedef std::set<TileSide> TileSideSet;
canBuild = (false == output.read<TileSideSet>().empty());
}
}
output = DataObject(canBuild, trades);
}
