private static double getScore(
TetrisGrid grid, TetrisBlock block, int moveHeight, int rowsCleared) {
double lh = moveHeight + (block.getHeight() - 1) / 2.0;
int re = rowsCleared;
int rt = RowTransitions.getRowTransitions(grid);
int ct = ColumnTransitions.getColumnTransitions(grid);
int ho = Holes.getHoles(grid);
int ws = Wells.getWellSumsEl(grid);
return w[0] * lh + w[1] * re + w[2] * rt + w[3] * ct + w[4] * ho + w[5] * ws;
}
@Override
public AIMove getMove(TetrisGrid grid, Tetromino t, List<Tetromino> next) {
double bestScore = Double.NEGATIVE_INFINITY;
int bestColumn = -1;
int bestOrientation = -1;
List<TetrisBlock> blocks = t.getBlockChain();
for (int or = 0; or < blocks.size(); or++) {
TetrisBlock block = blocks.get(or);
int maxCol = grid.getWidth() - block.getWidth();
for (int c = 0; c <= maxCol; c++) {
int row = grid.getDropRow(c, block);
if (row + block.getHeight() > grid.getHeight()) {
continue;
}
TetrisGrid subGrid = new TetrisGrid(grid);
int rowsCleared = subGrid.addAndClearRows(row, c, block);
if (next.size() > 0) {
List<TetrisBlock> blocks2 = next.get(0).getBlockChain();
for (int or2 = 0; or2 < blocks2.size(); or2++) {
TetrisBlock block2 = blocks2.get(or2);
int maxCol2 = subGrid.getWidth() - block2.getWidth();
for (int c2 = 0; c2 <= maxCol2; c2++) {
int row2 = subGrid.getDropRow(c2, block2);
if (row2 + block2.getHeight() > subGrid.getHeight()) {
continue;
}
TetrisGrid subGrid2 = new TetrisGrid(subGrid);
int rowsCleared2 = subGrid2.addAndClearRows(row2, c2, block2);
double score = getScore(subGrid2, block2, row2, rowsCleared + rowsCleared2);
if (score > bestScore) {
bestScore = score;
bestColumn = c;
bestOrientation = or;
}
}
}
} else {
double score = getScore(subGrid, block, row, rowsCleared);
if (score > bestScore) {
bestScore = score;
bestColumn = c;
bestOrientation = or;
}
}
}
}
return (bestColumn >= 0) ? new AIMove(bestColumn, bestOrientation) : null;
}