Skip to content

GoL faster random during setup #189

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
troyhacks merged 1 commit into from
Nov 19, 2024
Merged

GoL faster random during setup #189

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
28 changes: 8 additions & 20 deletions wled00/FX.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5375,29 +5375,17 @@ uint16_t mode_2Dgameoflife(void) { // Written by Ewoud Wijma, inspired by https:
memset(cells, 0, dataSize);
random16_set_seed(strip.now>>2); //seed the random generator
unsigned cIndex = 0;
uint32_t xorshift32_state = random16();
const uint32_t threshold = (UINT32_MAX / 3);
for (unsigned y = 0; y < rows; ++y) for (unsigned x = 0; x < cols; ++x, ++cIndex) {
for (unsigned y = 0; y < rows; ++y) {
#if defined(ARDUINO_ARCH_ESP32)
// bool setAlive = esp_random() < 1374389534; // ~32%
// bool setAlive = random16(100) < 32;
// bool setAlive = (rand() & 0xFF) < 86;
// bool setAlive = random8(3);
uint32_t myrand = xorshift32_state;
myrand ^= myrand << 13;
myrand ^= myrand >> 17;
myrand ^= myrand << 5;
xorshift32_state = myrand;
bool setAlive = (myrand < threshold);
#else
bool setAlive = random16(100) < 32;
random16_add_entropy(esp_random() & 0xFFFF);
#endif
if (setAlive) {
grid.setCell(cIndex, x, y, true, wrap);
cells[cIndex].toggleStatus = 1; // Used to set initial color
for (unsigned x = 0; x < cols; ++x, ++cIndex) {
if ((random16() & 0xFF) < 82) { // ~32%
grid.setCell(cIndex, x, y, true, wrap);
cells[cIndex].toggleStatus = 1; // Used to set initial color
}
else cells[cIndex].superDead = 1;
}
else cells[cIndex].superDead = 1;

}
}

Expand Down