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/* Conway's Game of Life for RVController
* A product of Advanced Mesecons Devices, a Cheapie Systems company
* This is free and unencumbered software released into the public domain.
* See http://unlicense.org/ for more information */
#include <stdint.h>
#include <stdbool.h>
#include "rvcontroller-ecalls.h"
bool field[176] = {false}; // 22*8, extra pixel on each edge will just always be false, makes generation logic easier
bool field2[176] = {false};
char screenbuf[121] = {'x'}; //20*6 + terminator
void randomFill(void) {
for (int y=1;y<=6;y++) {
for (int x=1;x<=20;x++) {
int cell = (y*22)+x;
field[cell] = (randomint(0,1) == 1);
}
}
}
void draw(void) {
char channelbuf[3] = {0};
for (int y=1;y<=6;y++) {
channelbuf[1] = 0x30+y;
for (int x=1;x<=20;x++) {
channelbuf[0] = 0x40+x;
int cell = (y*22)+x;
int outpos = ((y-1)*20)+x-1;
if (field[cell]) {
screenbuf[outpos] = '*';
digiline_send(channelbuf,"ffaa55");
} else {
screenbuf[outpos] = ' ';
digiline_send(channelbuf,"552200");
}
}
}
screenbuf[120] = 0;
printstr(screenbuf);
}
int countLivingCells(int cell) {
int count = 0;
if (field[cell-23]) { count += 1; } //Up-left
if (field[cell-22]) { count += 1; } //Up
if (field[cell-21]) { count += 1; } //Up-right
if (field[cell-1]) { count += 1; } //Left
if (field[cell+1]) { count += 1; } //Right
if (field[cell+21]) { count += 1; } //Down-left
if (field[cell+22]) { count += 1; } //Down
if (field[cell+23]) { count += 1; } //Down-right
return count;
}
void calculateNewGeneration(void) {
for (int y=1;y<=6;y++) {
for (int x=1;x<=20;x++) {
int cell = (y*22)+x;
int living = countLivingCells(cell);
if (field[cell]) {
//Currently alive, stay if 2 or 3
field2[cell] = (living == 2 || living == 3);
} else {
//Not currently alive, spawn if 3
field2[cell] = (living == 3);
}
}
}
}
void copyNewGeneration(void) {
for (int y=1;y<=6;y++) {
for (int x=1;x<=20;x++) {
int cell = (y*22)+x;
field[cell] = field2[cell];
}
}
}
void main(void) {
randomFill();
while (true) {
draw();
calculateNewGeneration();
copyNewGeneration();
}
}
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