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#pragma once
#include "common.h"
namespace aoc2021 {
struct meters {
int horizontal;
int depth;
int get_number(const char* p) {
int d{0};
while (*p >= '0' && *p <= '9') {
d = d * 10 + *p - '0';
p++;
}
return d;
}
void apply(line_view lv) {
const char* p = lv.contains(" ");
int d = get_number(p + 1);
if (line_view{lv.line, p} == line_view{"forward"}) {
horizontal += d;
}
if (line_view{lv.line, p} == line_view{"down"}) {
depth += d;
}
if (line_view{lv.line, p} == line_view{"up"}) {
depth -= d;
}
}
void apply(line_view lv, int* aim) {
const char* p = lv.contains(" ");
int d = get_number(p + 1);
if (line_view{lv.line, p} == line_view{"forward"}) {
horizontal += d;
depth += *aim * d;
}
if (line_view{lv.line, p} == line_view{"down"}) {
*aim += d;
}
if (line_view{lv.line, p} == line_view{"up"}) {
*aim -= d;
}
}
};
std::pair<int, int> day2(line_view);
} // namespace aoc2021
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