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AoC2023
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Day 10 part 2 partial commit.

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master
sigonasr2 12 months ago
parent 06ec995db6
commit aaf61c24f1
2 changed files with 221 additions and 21 deletions
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  1. 14
      Day 10/day10_1.txt
  2. 228
      Day 10/main.cpp

14
Day 10/day10_1.txt
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@ -1,5 +1,9 @@
-L|F7
7S-7|
L|7||
-L-J|
L|-JF
...........
.S-------7.
.|F-----7|.
.||.....||.
.||.....||.
.|L-7.F-J|.
.|..|.|..|.
.L--J.L--J.
...........

228
Day 10/main.cpp
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@ -26,6 +26,14 @@ void wait(int pauseMs=0){
const int DAY = 10;
Run runInput=FILE2;
enum Direction{
UP,
RIGHT,
DOWN,
LEFT,
};
struct Pipe{
bool down=false;
bool up=false;
@ -33,20 +41,214 @@ struct Pipe{
bool right=false;
char originalChar;
bool traversed=false;
int distance=0;
bool partOfLoop=false;
};
std::vector<std::vector<Pipe>>pipes;
std::vector<std::vector<Pipe>>tiles;
vi2d startingPipe;
std::optional<Pipe*>GetPipe(vi2d coords){
if(coords.x<0||coords.y<0||coords.y>=pipes.size()||coords.x>=pipes[coords.y].size())return {};
return &pipes[coords.y][coords.x];
if(coords.x<0||coords.y<0||coords.y>=tiles.size()||coords.x>=tiles[coords.y].size())return {};
return &tiles[coords.y][coords.x];
}
std::vector<vi2d>tilesRemaining;
void MarkAndMove(vi2d&pos,Direction dir){
tiles[pos.y][pos.x].partOfLoop=true;
tiles[pos.y][pos.x].traversed=true;
switch(dir){
case UP:{
pos.y-=1;
}break;
case RIGHT:{
pos.x+=1;
}break;
case DOWN:{
pos.y+=1;
}break;
case LEFT:{
pos.x-=1;
}break;
default:throw;
}
}
std::vector<vi2d>pipesRemaining;
void AddPipe(std::string row1,std::string row2,std::string row3,std::vector<Pipe>&upper,std::vector<Pipe>&middle,std::vector<Pipe>&lower){
auto ParseCharacter=[&](char c,std::vector<Pipe>&row){
switch(c){
case '.':{
row.push_back(Pipe{.originalChar=c});
}break;
case '-':{
row.push_back(Pipe{.left=true,.right=true,.originalChar=c});
}break;
case '|':{
row.push_back(Pipe{.down=true,.up=true,.originalChar=c});
}break;
case '7':{
row.push_back(Pipe{.down=true,.left=true,.originalChar=c});
}break;
case 'F':{
row.push_back(Pipe{.down=true,.right=true,.originalChar=c});
}break;
case 'L':{
row.push_back(Pipe{.up=true,.right=true,.originalChar=c});
}break;
case 'J':{
row.push_back(Pipe{.up=true,.left=true,.originalChar=c});
}break;
}
};
for(char&c:row1){
ParseCharacter(c,upper);
}
for(char&c:row2){
ParseCharacter(c,middle);
}
for(char&c:row3){
ParseCharacter(c,lower);
}
}
void doStuff2(){
while(true){ //lines is accessible as a global.
for(std::string&line:lines){
std::vector<Pipe>upperRow;
std::vector<Pipe>middleRow;
std::vector<Pipe>lowerRow;
for(int i=0;i<line.length();i++){
switch(line[i]){
case '|':{
AddPipe(
".|.",
".|.",
".|.",upperRow,middleRow,lowerRow);
}break;
case '-':{
AddPipe(
"...",
"---",
"...",upperRow,middleRow,lowerRow);
}break;
case 'L':{
AddPipe(
".L.",
".LL",
"...",upperRow,middleRow,lowerRow);
}break;
case 'J':{
AddPipe(
".J.",
"JJ.",
"...",upperRow,middleRow,lowerRow);
}break;
case '7':{
AddPipe(
"...",
"77.",
".7.",upperRow,middleRow,lowerRow);
}break;
case 'F':{
AddPipe(
"...",
".FF",
".F.",upperRow,middleRow,lowerRow);
}break;
case '.':{
for(int j=0;j<3;j++)upperRow.push_back({.originalChar=line[i]});
for(int j=0;j<3;j++)middleRow.push_back({.originalChar=line[i]});
for(int j=0;j<3;j++)lowerRow.push_back({.originalChar=line[i]});
}break;
case 'S':{
startingPipe={int(upperRow.size()),int(tiles.size())};
for(int j=0;j<3;j++)upperRow.push_back({.originalChar=line[i]});
for(int j=0;j<3;j++)middleRow.push_back({.originalChar=line[i]});
for(int j=0;j<3;j++)lowerRow.push_back({.originalChar=line[i]});
}break;
default:{
throw;
}
}
}
tiles.push_back(upperRow);
tiles.push_back(middleRow);
tiles.push_back(lowerRow);
}
//tilesRemaining.push_back(startingPipe);
auto initialPipe=GetPipe(startingPipe);
auto bottomPipe=GetPipe(startingPipe+vi2d{0,3}+vi2d{1,1});
if(bottomPipe&&bottomPipe.value()->up)initialPipe.value()->down=true;
auto topPipe=GetPipe(startingPipe+vi2d{0,-3}+vi2d{1,1});
if(topPipe&&topPipe.value()->down)initialPipe.value()->up=true;
auto leftPipe=GetPipe(startingPipe+vi2d{-3,0}+vi2d{1,1});
if(leftPipe&&leftPipe.value()->right)initialPipe.value()->left=true;
auto rightPipe=GetPipe(startingPipe+vi2d{3,0}+vi2d{1,1});
if(rightPipe&&rightPipe.value()->left)initialPipe.value()->right=true;
for(int y=0;y<3;y++){
for(int x=0;x<3;x++){
vi2d coords=startingPipe+vi2d{x,y};
tiles[coords.y][coords.x].originalChar='.';
}
}
char symbol='\0';
if(initialPipe.value()->down&&initialPipe.value()->up)symbol='|';
if(initialPipe.value()->left&&initialPipe.value()->right)symbol='-';
if(initialPipe.value()->down&&initialPipe.value()->left)symbol='7';
if(initialPipe.value()->down&&initialPipe.value()->right)symbol='F';
if(initialPipe.value()->up&&initialPipe.value()->left)symbol='J';
if(initialPipe.value()->up&&initialPipe.value()->right)symbol='L';
if(symbol=='\0')throw;
if(initialPipe.value()->down)tiles[startingPipe.y+2][startingPipe.x+1].originalChar=symbol;
if(initialPipe.value()->right)tiles[startingPipe.y+1][startingPipe.x+2].originalChar=symbol;
if(initialPipe.value()->up)tiles[startingPipe.y][startingPipe.x+1].originalChar=symbol;
if(initialPipe.value()->left)tiles[startingPipe.y+1][startingPipe.x].originalChar=symbol;
tiles[startingPipe.y+1][startingPipe.x+1].originalChar=symbol;
vi2d currentPos=startingPipe+vi2d{1,1};
if(initialPipe.value()->down)MarkAndMove(currentPos,DOWN);
else if(initialPipe.value()->right)MarkAndMove(currentPos,RIGHT);
else if(initialPipe.value()->up)MarkAndMove(currentPos,UP);
else if(initialPipe.value()->left)MarkAndMove(currentPos,LEFT);
else throw;
while(true){
auto pipe=GetPipe(currentPos);
if(pipe){
int moveCount=0;
auto upPipe=GetPipe(currentPos+vi2d{0,-1});
if(upPipe&&!upPipe.value()->traversed&&upPipe.value()->originalChar!='.'){moveCount++;MarkAndMove(currentPos,UP);continue;}
auto leftPipe=GetPipe(currentPos+vi2d{-1,0});
if(leftPipe&&!leftPipe.value()->traversed&&leftPipe.value()->originalChar!='.'){moveCount++;MarkAndMove(currentPos,LEFT);continue;}
auto rightPipe=GetPipe(currentPos+vi2d{1,0});
if(rightPipe&&!rightPipe.value()->traversed&&rightPipe.value()->originalChar!='.'){moveCount++;MarkAndMove(currentPos,RIGHT);continue;}
auto downPipe=GetPipe(currentPos+vi2d{0,1});
if(downPipe&&!downPipe.value()->traversed&&downPipe.value()->originalChar!='.'){moveCount++;MarkAndMove(currentPos,DOWN);continue;}
if(moveCount>1)throw;
if(moveCount==0)break;
}else{
throw;
}
}
//Test runs in all directions of looped pipes, see if they hit outer walls.
//If they do, starting from the wall, flood fill all adjacent tiles.
wait(0);
break;
//Wait for 0ms and render the screen (calls draw())
}
}
/*
void doStuff(){
while(true){ //lines is accessible as a global.
for(std::string&line:lines){
@ -82,7 +284,6 @@ void doStuff(){
pipes.push_back(row);
}
pipesRemaining.push_back(startingPipe);
int maxDistance=0;
auto AddPipe=[&](vi2d coords,int distance){
GetPipe(coords).value()->traversed=true;
@ -121,19 +322,14 @@ void doStuff(){
//wait(0); //Wait for 0ms and render the screen (calls draw())
}
}
*/
void draw(){ //Only use Sprites! If using decals, you must reference global variables!
Clear(BLACK);
int count=0;
for(int y=0;std::vector<Pipe>&row:pipes){
for(int y=0;std::vector<Pipe>&row:tiles){
for(int x=0;Pipe&pipe:row){
vi2d coords={x,y};
auto found=std::find(pipesRemaining.begin(),pipesRemaining.end(),coords);
Pixel col=GREY;
if(found!=pipesRemaining.end()){
col=YELLOW;
}
DrawString(coords*8,std::to_string(pipe.distance),col);
DrawString(coords*8,std::string(1,pipe.originalChar),pipe.partOfLoop?BLUE:(((x/3)+(y/3))%2==0)?YELLOW:WHITE);
x++;
}
y++;
@ -166,7 +362,7 @@ public:
bool OnUserUpdate(float fElapsedTime) override
{
static std::thread aocSolver(&AoC2023::doStuff,this);
static std::thread aocSolver(&AoC2023::doStuff2,this);
if(waitForRender){
draw();
@ -179,7 +375,7 @@ public:
int main()
{
AoC2023 game;
if (game.Construct(640, 480, 2, 2))
if (game.Construct(3360,3360, 2, 2))
game.Start();
return 0;
}

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