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update conway game of life example to auto-reset
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@michaelkamprath
michaelkamprath committed Nov 27, 2018
1 parent 5089474 commit 015a585
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
## [Unreleased]

### Changed
- Updated the Conway Game of Life example to auto-reset itself it the game evolves to a static, unchanging state.

### Added
- Basic capability to specify the endian-ness of the column layout for a matrix. While column 0 is meant to indicate the left most column, the hardware layout of the matrix might not make the left most column the MSB in the shift register chain. This might happen if you make a mistake in your hardware (oops!). By setting the column endian value of the matrix,the high level software can still reference column 0 to mean the left most column, and the bit layout sent the shift registers will be adjusted according to where column 0 physically is in the hardware.
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101 changes: 79 additions & 22 deletions examples/conway-game-of-life-10x10/conway-game-of-life-10x10.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ public:
const static LifeState BORN = 2;
const static LifeState DYING = 3;
const static LifeState DEAD = 0;
const static LifeState GAME_OVER = 4;

private:

Expand All @@ -37,7 +38,10 @@ private:
LifeState* _cells;
LifeState* _nextCells;

bool _isReseting;

RGBColorType getColorForLifeState( LifeState state ) const;


protected:
virtual void action();
Expand All @@ -49,11 +53,12 @@ public:
unsigned long updateMicros
);

void setCellStatus(int row, int column, LifeState cellStatus);
LifeState getCellStatus(int row, int column) const;

bool isAlive(int row, int column) const;
int countAliveNeighbors(int row, int column) const;
void setCellStatus(unsigned int row, unsigned int column, LifeState cellStatus);
LifeState getCellStatus(unsigned int row, unsigned int column) const;
void createRandomState();

bool isAlive(unsigned int row, unsigned int column) const;
int countAliveNeighbors(unsigned int row, unsigned int column) const;

void drawToScreen();
};
Expand All @@ -64,46 +69,47 @@ CellUniverse::CellUniverse(
) : TimerAction(updateMicros),
_leds(matrix),
_cells(new LifeState[matrix.rows()*matrix.columns()]),
_nextCells(new LifeState[matrix.rows()*matrix.columns()])
_nextCells(new LifeState[matrix.rows()*matrix.columns()]),
_isReseting(false)
{
memset(_cells,DEAD,matrix.rows()*matrix.columns()*sizeof(LifeState));
memset(_nextCells,DEAD,matrix.rows()*matrix.columns()*sizeof(LifeState));
}

void CellUniverse::setCellStatus(int row, int column, LifeState cellStatus) {
void CellUniverse::setCellStatus(unsigned int row, unsigned int column, LifeState cellStatus) {
if (row < 0 || row >= _leds.rows() || column < 0 || column >= _leds.columns()) {
return;
}

int idx = row*_leds.columns() + column;
unsigned int idx = row*_leds.columns() + column;

_cells[idx] = cellStatus;
}

CellUniverse::LifeState CellUniverse::getCellStatus(int row, int column) const {
CellUniverse::LifeState CellUniverse::getCellStatus(unsigned int row, unsigned int column) const {
// this causes the matrix to be a toroidal array
int r = row < 0 ? row + _leds.rows() : ( row >= _leds.rows() ? row - _leds.rows() : row );
int c = column < 0 ? column + _leds.columns() : ( column >= _leds.columns() ? column - _leds.columns() : column );
unsigned int r = row < 0 ? row + _leds.rows() : ( row >= _leds.rows() ? row - _leds.rows() : row );
unsigned int c = column < 0 ? column + _leds.columns() : ( column >= _leds.columns() ? column - _leds.columns() : column );

// double check just to be sure
if (r < 0 || r >= _leds.rows() || c < 0 || c >= _leds.columns()) {
return CellUniverse::DEAD;
}

int idx = r*_leds.columns() + c;
unsigned int idx = r*_leds.columns() + c;

return _cells[idx];
}

bool CellUniverse::isAlive(int row, int column) const {
bool CellUniverse::isAlive(unsigned int row, unsigned int column) const {
return (this->getCellStatus(row, column) == CellUniverse::ALIVE || this->getCellStatus(row, column) == CellUniverse::BORN);
}

int CellUniverse::countAliveNeighbors(int row, int column) const {
int CellUniverse::countAliveNeighbors(unsigned int row, unsigned int column) const {
int aliveCount = 0;

for (int x = column - 1; x <= column+1; x++) {
for (int y = row - 1; y <= row + 1; y++ ) {
for (unsigned int x = column - 1; x <= column+1; x++) {
for (unsigned int y = row - 1; y <= row + 1; y++ ) {
if (this->isAlive(y, x) && !(x == column && y == row)) {
aliveCount++;
}
Expand All @@ -114,9 +120,18 @@ int CellUniverse::countAliveNeighbors(int row, int column) const {
}

void CellUniverse::action() {
if (_isReseting) {
delay(5000);
this->createRandomState();
_isReseting = false;
return;
}

_leds.startDrawing();
for (int x = 0; x < _leds.columns(); x++) {
for (int y = 0; y < _leds.rows(); y++ ) {
bool isSame = true;

for (unsigned int x = 0; x < _leds.columns(); x++) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
LifeState newState = DEAD;
LifeState currentState = this->getCellStatus(y, x);
int count = this->countAliveNeighbors(y, x);
Expand All @@ -139,8 +154,11 @@ void CellUniverse::action() {
}
break;
}

int idx = y*_leds.columns() + x;
if (currentState != newState) {
isSame = false;
}

unsigned int idx = y*_leds.columns() + x;
_nextCells[idx] = newState;

RGBColorType cellColor = this->getColorForLifeState(newState);
Expand All @@ -149,13 +167,49 @@ void CellUniverse::action() {
}
_leds.stopDrawing();

// determine if life needs to start over
if (isSame) {
for (unsigned int x = 0; x < _leds.columns(); x++ ) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
if (this->getCellStatus(y, x) == DEAD) {
this->setCellStatus(y, x, GAME_OVER);
}
}
}
this->drawToScreen();
_isReseting = true;
}
else {
memcpy(_cells, _nextCells, _leds.rows()*_leds.columns()*sizeof(LifeState));
}

}

void CellUniverse::createRandomState() {
unsigned int numTotalCells = _leds.rows()*_leds.columns();

for (unsigned int x = 0; x < _leds.columns(); x++ ) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
this->setCellStatus(y, x, CellUniverse::DEAD);
}
}

unsigned int countStartingCells = random(0.25*numTotalCells, 0.75*numTotalCells);

for (unsigned int i = 0; i < countStartingCells; i++ ) {
int randomRow = random(0,_leds.rows());
int randomColumn = random(0,_leds.columns());

this->setCellStatus(randomRow, randomColumn, CellUniverse::BORN);
}

this->drawToScreen();
}

void CellUniverse::drawToScreen() {
_leds.startDrawing();
for (int x = 0; x < _leds.columns(); x++) {
for (int y = 0; y < _leds.rows(); y++ ) {
for (unsigned int x = 0; x < _leds.columns(); x++) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
LifeState currentState = this->getCellStatus(y, x);
RGBColorType cellColor = this->getColorForLifeState(currentState);
_leds.image().pixel(y, x) = cellColor;
Expand All @@ -176,6 +230,9 @@ RGBColorType CellUniverse::getColorForLifeState( LifeState state ) const {
case DYING:
cellColor = RED_COLOR;
break;
case GAME_OVER:
cellColor = BLACK_COLOR;
break;
case DEAD:
default:
cellColor = BLACK_COLOR;
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101 changes: 79 additions & 22 deletions examples/conway-game-of-life-8x8/conway-game-of-life-8x8.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ public:
const static LifeState BORN = 2;
const static LifeState DYING = 3;
const static LifeState DEAD = 0;
const static LifeState GAME_OVER = 4;

private:

Expand All @@ -37,7 +38,10 @@ private:
LifeState* _cells;
LifeState* _nextCells;

bool _isReseting;

RGBColorType getColorForLifeState( LifeState state ) const;


protected:
virtual void action();
Expand All @@ -49,11 +53,12 @@ public:
unsigned long updateMicros
);

void setCellStatus(int row, int column, LifeState cellStatus);
LifeState getCellStatus(int row, int column) const;

bool isAlive(int row, int column) const;
int countAliveNeighbors(int row, int column) const;
void setCellStatus(unsigned int row, unsigned int column, LifeState cellStatus);
LifeState getCellStatus(unsigned int row, unsigned int column) const;
void createRandomState();

bool isAlive(unsigned int row, unsigned int column) const;
int countAliveNeighbors(unsigned int row, unsigned int column) const;

void drawToScreen();
};
Expand All @@ -64,46 +69,47 @@ CellUniverse::CellUniverse(
) : TimerAction(updateMicros),
_leds(matrix),
_cells(new LifeState[matrix.rows()*matrix.columns()]),
_nextCells(new LifeState[matrix.rows()*matrix.columns()])
_nextCells(new LifeState[matrix.rows()*matrix.columns()]),
_isReseting(false)
{
memset(_cells,DEAD,matrix.rows()*matrix.columns()*sizeof(LifeState));
memset(_nextCells,DEAD,matrix.rows()*matrix.columns()*sizeof(LifeState));
}

void CellUniverse::setCellStatus(int row, int column, LifeState cellStatus) {
void CellUniverse::setCellStatus(unsigned int row, unsigned int column, LifeState cellStatus) {
if (row < 0 || row >= _leds.rows() || column < 0 || column >= _leds.columns()) {
return;
}

int idx = row*_leds.columns() + column;
unsigned int idx = row*_leds.columns() + column;

_cells[idx] = cellStatus;
}

CellUniverse::LifeState CellUniverse::getCellStatus(int row, int column) const {
CellUniverse::LifeState CellUniverse::getCellStatus(unsigned int row, unsigned int column) const {
// this causes the matrix to be a toroidal array
int r = row < 0 ? row + _leds.rows() : ( row >= _leds.rows() ? row - _leds.rows() : row );
int c = column < 0 ? column + _leds.columns() : ( column >= _leds.columns() ? column - _leds.columns() : column );
unsigned int r = row < 0 ? row + _leds.rows() : ( row >= _leds.rows() ? row - _leds.rows() : row );
unsigned int c = column < 0 ? column + _leds.columns() : ( column >= _leds.columns() ? column - _leds.columns() : column );

// double check just to be sure
if (r < 0 || r >= _leds.rows() || c < 0 || c >= _leds.columns()) {
return CellUniverse::DEAD;
}

int idx = r*_leds.columns() + c;
unsigned int idx = r*_leds.columns() + c;

return _cells[idx];
}

bool CellUniverse::isAlive(int row, int column) const {
bool CellUniverse::isAlive(unsigned int row, unsigned int column) const {
return (this->getCellStatus(row, column) == CellUniverse::ALIVE || this->getCellStatus(row, column) == CellUniverse::BORN);
}

int CellUniverse::countAliveNeighbors(int row, int column) const {
int CellUniverse::countAliveNeighbors(unsigned int row, unsigned int column) const {
int aliveCount = 0;

for (int x = column - 1; x <= column+1; x++) {
for (int y = row - 1; y <= row + 1; y++ ) {
for (unsigned int x = column - 1; x <= column+1; x++) {
for (unsigned int y = row - 1; y <= row + 1; y++ ) {
if (this->isAlive(y, x) && !(x == column && y == row)) {
aliveCount++;
}
Expand All @@ -114,9 +120,18 @@ int CellUniverse::countAliveNeighbors(int row, int column) const {
}

void CellUniverse::action() {
if (_isReseting) {
delay(5000);
this->createRandomState();
_isReseting = false;
return;
}

_leds.startDrawing();
for (int x = 0; x < _leds.columns(); x++) {
for (int y = 0; y < _leds.rows(); y++ ) {
bool isSame = true;

for (unsigned int x = 0; x < _leds.columns(); x++) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
LifeState newState = DEAD;
LifeState currentState = this->getCellStatus(y, x);
int count = this->countAliveNeighbors(y, x);
Expand All @@ -139,8 +154,11 @@ void CellUniverse::action() {
}
break;
}

int idx = y*_leds.columns() + x;
if (currentState != newState) {
isSame = false;
}

unsigned int idx = y*_leds.columns() + x;
_nextCells[idx] = newState;

RGBColorType cellColor = this->getColorForLifeState(newState);
Expand All @@ -149,13 +167,49 @@ void CellUniverse::action() {
}
_leds.stopDrawing();

// determine if life needs to start over
if (isSame) {
for (unsigned int x = 0; x < _leds.columns(); x++ ) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
if (this->getCellStatus(y, x) == DEAD) {
this->setCellStatus(y, x, GAME_OVER);
}
}
}
this->drawToScreen();
_isReseting = true;
}
else {
memcpy(_cells, _nextCells, _leds.rows()*_leds.columns()*sizeof(LifeState));
}

}

void CellUniverse::createRandomState() {
unsigned int numTotalCells = _leds.rows()*_leds.columns();

for (unsigned int x = 0; x < _leds.columns(); x++ ) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
this->setCellStatus(y, x, CellUniverse::DEAD);
}
}

unsigned int countStartingCells = random(0.25*numTotalCells, 0.75*numTotalCells);

for (unsigned int i = 0; i < countStartingCells; i++ ) {
int randomRow = random(0,_leds.rows());
int randomColumn = random(0,_leds.columns());

this->setCellStatus(randomRow, randomColumn, CellUniverse::BORN);
}

this->drawToScreen();
}

void CellUniverse::drawToScreen() {
_leds.startDrawing();
for (int x = 0; x < _leds.columns(); x++) {
for (int y = 0; y < _leds.rows(); y++ ) {
for (unsigned int x = 0; x < _leds.columns(); x++) {
for (unsigned int y = 0; y < _leds.rows(); y++ ) {
LifeState currentState = this->getCellStatus(y, x);
RGBColorType cellColor = this->getColorForLifeState(currentState);
_leds.image().pixel(y, x) = cellColor;
Expand All @@ -176,6 +230,9 @@ RGBColorType CellUniverse::getColorForLifeState( LifeState state ) const {
case DYING:
cellColor = RED_COLOR;
break;
case GAME_OVER:
cellColor = BLACK_COLOR;
break;
case DEAD:
default:
cellColor = BLACK_COLOR;
Expand Down

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