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Finished day 9 part 1 aoc

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This commit is contained in:
Philippe Zwietering
2022-12-16 16:20:09 +01:00
parent 77db9e7b4e
commit fa33f71139
1 changed files with 27 additions and 36 deletions
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63
advent_of_code/2022/9/main.cpp
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@@ -5,50 +5,39 @@ using namespace std;
using Coords = pair<int, int>; using Coords = pair<int, int>;
void moveTail(const Coords& head, Coords& tail){ void moveTail(const Coords& head, Coords& tail){
if(head.first - tail.first > 1){ if(abs(head.first - tail.first) <= 1 && abs(head.second - tail.second) <= 1){
tail.first++; return;
} else if(head.first - tail.first < -1){
tail.first--;
} }
if(head.second - tail.second > 1){ if(head.first == tail.first){
if(head.second > tail.second){
tail.second++;
} else{
tail.second--;
}
} else if(head.second == tail.second){
if(head.first > tail.first){
tail.first++;
} else{
tail.first--;
}
} else if(head.first > tail.first && head.second > tail.second){
tail.first++;
tail.second++; tail.second++;
} else if(head.second - tail.second < -1){ } else if(head.first < tail.first && head.second > tail.second){
tail.first--;
tail.second++;
} else if(head.first > tail.first && head.second < tail.second){
tail.first++;
tail.second--;
} else if(head.first < tail.first && head.second < tail.second){
tail.first--;
tail.second--; tail.second--;
} }
// if(abs(head.first - tail.first) > 1 || abs(head.second - tail.second) > 1){
// if(abs(head.first - tail.first) >= 1 && abs(head.second - tail.second) >= 1){
// if(head.first > tail.first && head.second > tail.second){
// tail.first++;
// tail.second++;
// } else if(head.first > tail.first && head.second < tail.second){
// tail.first++;
// tail.second--;
// } else if(head.first < tail.first && head.second > tail.second){
// tail.first--;
// tail.second++;
// } else{
// tail.first--;
// tail.second--;
// }
// } else if(abs(head.first - tail.first > 1)){
// if(head.first > tail.first){
// tail.first++;
// } else{
// tail.first--;
// }
// } else{
// if(head.second > tail.second){
// tail.second++;
// } else{
// tail.second--;
// }
// }
// }
} }
int main(){ int main(){
ifstream input_file("test.txt"); ifstream input_file("input.txt");
string line; string line;
Coords head(0, 0), tail(0, 0); Coords head(0, 0), tail(0, 0);
@@ -75,6 +64,8 @@ int main(){
moveTail(head, tail); moveTail(head, tail);
visited_by_tail.insert(tail); visited_by_tail.insert(tail);
steps--; steps--;
// cout << head.first << " " << head.second << " " << tail.first << " " << tail.second << '\n';
} }
} }