c code collaboration competition
if you can comprehend what i've started here, this is your chance to express your aesthetic in a new branch of automata
Code:
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#define OP_GT (0)
#define OP_GTE (1)
#define OP_LT (2)
#define OP_LTE (3)
typedef struct grid grid_t;
typedef struct rule rule_t;
typedef struct page page_t;
typedef struct ofst ofst_t;
struct grid
{
uint32_t d;
uint32_t *m;
};
struct ofst
{
int8_t x;
int8_t y;
};
struct rule
{
uint8_t f : 1;
uint8_t op : 2;
uint8_t x : 3;
uint8_t z : 2; // not used
};
struct page
{
rule_t r;
uint8_t n;
};
void wcell(grid_t *g, uint32_t x, uint32_t y, uint8_t v)
{
uint32_t d = g->d;
if (x >= d || y >= d)
return;
g[x + d * y] = v;
}
uint8_t rcell(grid_t *g, uint32_t x, uint32_t y)
{
uint32_t d = g->d;
if (x >= d || y >= d)
return 0;
return g[x + d * y];
}
void info(page_t *p, grid_t *g, uint32_t x, uint32_t y)
{
offset_t o[8] = {
{ .x = -1, .y = -1 },
{ .x = 0, .y = -1 },
{ .x = 1, .y = -1 },
{ .x = 1, .y = 0 },
{ .x = 1, .y = 1 },
{ .x = 0, .y = 1 },
{ .x = -1, .y = 1 },
{ .x = -1, .y = 0 },
};
uint8_t c;
// 0 1 2
// 7 3
// 6 5 4
memset(p, 0, sizeof(page_t));
for (i = 0; i < 8; i++) {
c = rcell(g, x + o[i].x, y + o[i].y);
p.n += c;
p.r = (p.r << 1) | c;
}
}
void next_step(grid_t *n, grid_t *g, uint32_t x, uint32_t y)
{
page_t p;
info(&p, g, x, y);
switch (p.r.op)
{
case OP_GT: if (p.r.x > p.n) wcell(n, x, y, p.r.f); return;
case OP_GTE: if (p.r.x >= p.n) wcell(n, x, y, p.r.f); return;
case OP_LT: if (p.r.x < p.n) wcell(n, x, y, p.r.f); return;
case OP_LTE: if (p.r.x <= p.n) wcell(n, x, y, p.r.f); return;
}
wcell(n, x, y, rcell(g, x, y));
}
void next_grid(grid_t *n, grid_t *g)
{
uint32_t x, y, d;
d = g->d;
for (x = 0; x < d; x++)
for (y = 0; y < d; y++)
next_step(n, g, x, y);
}
int main (int argc, char **argv)
{
grid_t a, b, *v, *w;
v = &a; w = &b;
memset(v, 0, sizeof(grid_t));
memset(w, 0, sizeof(grid_t));
// load v
for (;;) {
draw(v);
next_grid(w, v);
if (v == &a) { v = &b; w = &a; }
else { v = &a; w = &b; }
}
return 0;
}
it doesn't compile yet. i don't usually need the compiler until the very end. just fill in the blanks and don't talk shit
