// best tactical result for the moving side
Score StaticExchangeEvaluation(Board &board, Move mv)
{
board.ResetSee();
// convert the move to SEE format
PieceType pt;
Square from;
Square to;
pt = GetPieceType(mv);
from = GetFromSquare(mv);
to = GetToSquare(mv);
PieceType capturedPT = board.ApplyMoveSee(pt, from, to);
// the first move is forced
Score ret = 0;
if (capturedPT != EMPTY)
{
ret = SEE_MAT[capturedPT] - StaticExchangeEvaluationSq(board, to);
}
else
{
ret = -StaticExchangeEvaluationSq(board, to);
}
board.UndoMoveSee();
return ret;
}
std::string GetMoveSAN(Position &position, const Move move)
{
const Square from = GetFrom(move);
const Square to = GetTo(move);
const Move moveType = GetMoveType(move);
std::string result;
if (moveType == MoveTypeCastle)
{
if (GetColumn(to) > FILE_E)
{
result = "O-O";
}
else
{
result = "O-O-O";
}
}
else
{
// Piece that is moving
const PieceType fromPieceType = GetPieceType(position.Board[from]);
switch (fromPieceType)
{
case PAWN: break;
case KNIGHT: result += "N"; break;
case BISHOP: result += "B"; break;
case ROOK: result += "R"; break;
case QUEEN: result += "Q"; break;
case KING: result += "K"; break;
}
Move legalMoves[256];
int legalMoveCount = GenerateLegalMoves(position, legalMoves);
// Do we need to disambiguate?
bool dupe = false, rowDiff = true, columnDiff = true;
for (int i = 0; i < legalMoveCount; i++)
{
if (GetFrom(legalMoves[i]) != from &&
GetTo(legalMoves[i]) == to &&
GetPieceType(position.Board[GetFrom(legalMoves[i])]) == fromPieceType)
{
dupe = true;
if (GetRow(GetFrom(legalMoves[i])) == GetRow(from))
{
rowDiff = false;
}
if (GetColumn(GetFrom(legalMoves[i])) == GetColumn(from))
{
columnDiff = false;
}
}
}
if (dupe)
{
if (columnDiff)
{
result += GetSquareSAN(from)[0];
}
else if (rowDiff)
{
result += GetSquareSAN(from)[1];
}
else
{
result += GetSquareSAN(from);
}
}
else if (fromPieceType == PAWN && position.Board[to] != PIECE_NONE)
{
// Pawn captures need a row
result += GetSquareSAN(from)[0];
}
// Capture?
if (position.Board[to] != PIECE_NONE ||
moveType == MoveTypeEnPassent)
{
result += "x";
}
// Target square
result += GetSquareSAN(to);
}
if (moveType == MoveTypePromotion)
{
switch (GetPromotionMoveType(move))
{
case KNIGHT: result += "=N"; break;
case BISHOP: result += "=B"; break;
case ROOK: result += "=R"; break;
case QUEEN: result += "=Q"; break;
}
}
MoveUndo moveUndo;
position.MakeMove(move, moveUndo);
if (position.IsInCheck())
{
Move checkEscapes[64];
result += GenerateCheckEscapeMoves(position, checkEscapes) == 0 ? "#" : "+";
}
position.UnmakeMove(move, moveUndo);
return result;
}
bool StreetMap::GetRandomPavementArea(uint32_t x, uint32_t y, sm::Vec3 &position, sm::Vec3 &direction)
{
static Randomizer random;
StreetPiece::PieceType type = GetPieceType(x, y);
float streetWidth = 10.0f;
float pavementWidth = 2.0f;
switch (type)
{
case StreetPiece::PieceType_Pavement:
return false;
break;
case StreetPiece::PieceType_StraightHori_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
y * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * random.GetSign());
direction = sm::Vec3(MathUtils::Sign(random.GetFloat(-1, 1)), 0, 0);
return true;
case StreetPiece::PieceType_StraightVert_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * random.GetSign(),
0,
y * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2));
direction = sm::Vec3(0, 0, MathUtils::Sign(random.GetFloat(-1, 1)));
return true;
case StreetPiece::PieceType_TurnUpRight_1:
if (random.GetInt(0, 1) == 1)
{
position = sm::Vec3(
x * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
y * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2));
}
else
{
position = sm::Vec3(
x * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1,
0,
y * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2));
}
direction = sm::Vec3(0, 0, MathUtils::Sign(random.GetFloat(-1, 1)));
return true;
case StreetPiece::PieceType_TurnUpLeft_1:
if (random.GetInt(0, 1) == 1)
{
position = sm::Vec3(
random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1);
}
else
{
position = sm::Vec3(
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1,
0,
random.GetFloat(-streetWidth / 2, streetWidth / 2));
}
position = Street::Instance->GetStreetPiece((uint8_t)type)->GetTransform() * position;
position.x += streetWidth * x;
position.z += streetWidth * y;
direction = sm::Vec3(0, 0, MathUtils::Sign(random.GetFloat(-1, 1)));
return true;
case StreetPiece::PieceType_TurnDownRight_1:
if (random.GetInt(0, 1) == 1)
{
position = sm::Vec3(
random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1);
}
else
{
position = sm::Vec3(
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1,
0,
random.GetFloat(-streetWidth / 2, streetWidth / 2));
}
position = Street::Instance->GetStreetPiece((uint8_t)type)->GetTransform() * position;
position.x += streetWidth * x;
position.z += streetWidth * y;
direction = sm::Vec3(0, 0, MathUtils::Sign(random.GetFloat(-1, 1)));
return true;
case StreetPiece::PieceType_TurnDownLeft_1:
if (random.GetInt(0, 1) == 1)
{
position = sm::Vec3(
random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1);
}
else
{
position = sm::Vec3(
random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1,
0,
random.GetFloat(-streetWidth / 2, streetWidth / 2));
}
position = Street::Instance->GetStreetPiece((uint8_t)type)->GetTransform() * position;
position.x += streetWidth * x;
position.z += streetWidth * y;
direction = sm::Vec3(0, 0, MathUtils::Sign(random.GetFloat(-1, 1)));
return true;
case StreetPiece::PieceType_Cross_1:
break;
case StreetPiece::PieceType_TUp_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
y * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1);
direction = sm::Vec3(MathUtils::Sign(random.GetFloat(-1, 1)), 0, 0);
return true;
case StreetPiece::PieceType_TDown_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2),
0,
y * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * 1);
direction = sm::Vec3(MathUtils::Sign(random.GetFloat(-1, 1)), 0, 0);
return true;
case StreetPiece::PieceType_TLeft_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * 1,
0,
y * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2));
direction = sm::Vec3(MathUtils::Sign(random.GetFloat(-1, 1)), 0, 0);
return true;
case StreetPiece::PieceType_TRight_1:
position = sm::Vec3(
x * streetWidth + random.GetFloat(streetWidth / 2 - pavementWidth, streetWidth / 2) * -1,
0,
y * streetWidth + random.GetFloat(-streetWidth / 2, streetWidth / 2));
direction = sm::Vec3(MathUtils::Sign(random.GetFloat(-1, 1)), 0, 0);
return true;
case StreetPiece::PieceType_Skycrapper_1:
case StreetPiece::PieceType_Skycrapper_2:
case StreetPiece::PieceType_Skycrapper_3:
break;
default:
break;
}
return false;
}
