void Grid::update()
{
if (!m_IsPlaying)
return;
// Maps coordinates to its new state
std::map<std::pair<int,int>, int> stateChanges;
for (int x = 0; x < NUM_CELLS; ++x)
{
for (int y = 0; y < NUM_CELLS; ++y)
{
auto numLiveNeighbors = getNumLiveNeighbors(x, y);
if (m_Cells[x][y] == 1)
{
if ((numLiveNeighbors < 2) || (numLiveNeighbors > 3))
stateChanges[std::make_pair(x, y)] = 0;
}
else
{
if (numLiveNeighbors == 3)
stateChanges[std::make_pair(x, y)] = 1;
}
}
}
for (auto& pair : stateChanges)
{
auto x = pair.first.first;
auto y = pair.first.second;
setCellState(x, y, pair.second);
}
++m_NumGenerations;
}
void Grid::toggleState(int x, int y)
{
setCellState(x, y, (m_Cells[x][y] == 0 ? 1 : 0));
}
void FieldRandomizer::randomizeShips() {
field.clear();
unsigned i,j,k,iterator;
// Set 4block ship
k = rand(0,1);
i = rand(0,FieldSize-1);
j = rand(0,FieldSize-1);
iterator = 4;
if (k==0) {
// then horizontal
while(iterator > 0) {
if (m_field[i][j] == EMPTY) {
setCellState(i,j,SHIP_NORMAL);
iterator -= 1;
}
k = rand(0,1);
if (k==0) {
if (j+1 < FieldSize) { j += 1; } else { j -= 1; };
} else {
if (j > 0) { j -= 1; } else { j += 1; };
}
}
} else {
// then vertical
while(iterator > 0) {
if (m_field[i][j] == EMPTY) {
setCellState(i,j,SHIP_NORMAL);
iterator -= 1;
}
k = rand(0,1);
if (k==0) {
if (i+1 < FieldSize) { i += 1; } else { i -= 1; }
} else {
if (i > 0) { i -= 1; } else { i += 1; }
}
}
}
// Set 3block ships
iterator = 2;
while(iterator > 0) {
k = rand(0,1);
i = rand(0,FieldSize-1);
j = rand(0,FieldSize-1);
if (k==0) {
// then horizontal
if (checkNeighborhoodFor3BlockHorizontal(i,j)&& j<FieldSize-2) {
setCellState(i,j,SHIP_NORMAL);
setCellState(i,j+1,SHIP_NORMAL);
setCellState(i,j+2,SHIP_NORMAL);
iterator -= 1;
}
} else {
// then vertical
if (checkNeighborhoodFor3BlockVertical(i,j)&& i<FieldSize-2) {
setCellState(i,j,SHIP_NORMAL);
setCellState(i+1,j,SHIP_NORMAL);
setCellState(i+2,j,SHIP_NORMAL);
iterator -= 1;
}
}
}
// Set 2block ships
iterator = 3;
while(iterator > 0) {
k = rand(0,1);
i = rand(0,FieldSize-1);
j = rand(0,FieldSize-1);
if (k==0) {
// then horizontal
if (checkNeighborhoodFor2BlockHorizontal(i,j)&& j<FieldSize-1) {
setCellState(i,j,SHIP_NORMAL);
setCellState(i,j+1,SHIP_NORMAL);
iterator -= 1;
}
} else {
// then vertical
if (checkNeighborhoodFor2BlockVertical(i,j)&& i<FieldSize-1) {
setCellState(i,j,SHIP_NORMAL);
setCellState(i+1,j,SHIP_NORMAL);
iterator -= 1;
}
}
}
// Set 1block ships
iterator = 4;
while(iterator > 0) {
i = rand(0,FieldSize-1);
j = rand(0,FieldSize-1);
if (checkNeighborhoodFor1Block(i,j)) {
setCellState(i,j,SHIP_NORMAL);
iterator -= 1;
}
}
}
