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#include "aoc.h"
namespace aoc2022 {
static line_view moves;
static uint8_t at(uint8_t r, int p) {
// p 0..7
uint8_t m = 0x01;
while (p-- > 0)
m <<= 1;
return m & r;
}
char next() {
static int i{0};
i %= (moves.length - 1);
const char* p = moves.line;
i++;
return *(p + i);
}
void print(const rock17& r) {
for (size_t i = r.rs.size(); i > 0; i--) {
uint8_t x = r.rs[i - 1];
int c{6};
while (c >= 0) {
printf("%c", at(x, c) ? '#' : '.');
c--;
}
printf("\n");
}
}
rock17 make_rock(int i) {
rock17 r;
r.type = (rock_type)(i % 5);
switch (r.type) {
case r1:
r.rs = {0x1E};
break;
case r2:
r.rs = {0x08, 0x1C, 0x08};
break;
case r3:
r.rs = {0x1C, 0x04, 0x04};
break;
case r4:
r.rs = {0x10, 0x10, 0x10, 0x10};
break;
case r5:
r.rs = {0x18, 0x18};
break;
default:
break;
}
/*
case chamber:
r.rs = {0x7F};
break;
case three:
r.rs = {0x00, 0x00, 0x00};
break;
*/
return r;
}
rock17 right(rock17 r) {
switch (r.type) {
case r1:
if (at(r.rs[0], 0) == 0) {
r.rs[0] >>= 1;
}
break;
case r2:
case r3:
if (at(r.rs[1], 0) == 0) {
r.rs[0] >>= 1;
r.rs[1] >>= 1;
r.rs[2] >>= 1;
}
break;
case r4:
if (at(r.rs[0], 0) == 0) {
r.rs[0] >>= 1;
r.rs[1] >>= 1;
r.rs[2] >>= 1;
r.rs[3] >>= 1;
}
break;
case r5:
if (at(r.rs[0], 0) == 0) {
r.rs[0] >>= 1;
r.rs[1] >>= 1;
}
break;
default:
break;
}
return r;
}
rock17 left(rock17 r) {
switch (r.type) {
case r1:
if (at(r.rs[0], 6) == 0) {
r.rs[0] <<= 1;
}
break;
case r2:
if (at(r.rs[1], 6) == 0) {
r.rs[0] <<= 1;
r.rs[1] <<= 1;
r.rs[2] <<= 1;
}
break;
case r3:
if (at(r.rs[0], 6) == 0) {
r.rs[0] <<= 1;
r.rs[1] <<= 1;
r.rs[2] <<= 1;
}
break;
case r4:
if (at(r.rs[0], 6) == 0) {
r.rs[0] <<= 1;
r.rs[1] <<= 1;
r.rs[2] <<= 1;
r.rs[3] <<= 1;
}
break;
case r5:
if (at(r.rs[0], 6) == 0) {
r.rs[0] <<= 1;
r.rs[1] <<= 1;
}
break;
default:
break;
}
return r;
}
void merge(rock17& floor, rock17 r) {}
std::pair<int, int> day17(line_view file) {
moves = file;
rock17 floor{chamber, {0x7F}};
int n{10};
for (int i = 0; i < n; i++) {
rock17 r = make_rock(i);
auto three{3};
while (three-- > 0) {
floor.rs.push_back(0x00);
}
merge(floor, r);
}
print(floor);
return {0, 0};
}
} // namespace aoc2022
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