AoC2023/Day 8/main.cpp

#pragma region Hidden Setup Stuff
#define OLC_PGE_APPLICATION
#include "olcPixelGameEngine.h"

using namespace olc;

enum Run{
	FILE1,
	FILE2
};

// Override base class with your custom functionality
class AoC2023 : public olc::PixelGameEngine
{
std::vector<std::string>lines;
bool waitForRender=false;

void wait(int pauseMs=0){
	waitForRender=true;
	while(waitForRender);
	std::this_thread::sleep_for(std::chrono::milliseconds(pauseMs));
}

#pragma endregion

const int DAY = 8;
Run runInput=FILE2;

std::map<std::string,std::pair<std::string,std::string>>nodes;

std::string instructions;

std::string currentNode="AAA";
int instructionIndex=0;

void doStuff(){
	while(true){ //lines is accessible as a global.
		bool firstLine=true;
		for(int lineNumb=0;std::string&line:lines){
			if(lineNumb==0){
				instructions=line;
			}else
			if(lineNumb>=2){
				nodes[line.substr(0,3)]={line.substr(line.find('(')+1,3),line.substr(line.find(')')-3,3)};
			}
			lineNumb++;
		}
		int step=0;
		while(currentNode!="ZZZ"){
			char currentInstruction=instructions[instructionIndex];
			if(currentInstruction=='R'){
				currentNode=nodes[currentNode].second;
			}else{
				currentNode=nodes[currentNode].first;
			}
			instructionIndex=(instructionIndex+1)%instructions.length();
			step++;
		}
		std::cout<<step<<std::endl;
		break;
		//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(std::string&line:lines){
		DrawString({0,count*32},line,WHITE,4);
		count++;
	}
}

#pragma region Hidden Engine Stuff
public:
	AoC2023()
	{
		// Name your application
		std::string fileName="day"+std::to_string(DAY)+"_1.txt";
		if(runInput==FILE2){fileName="day"+std::to_string(DAY)+"_2.txt";}
		std::ifstream file(fileName);
		while(file.good()){
			std::string line;
			std::getline(file,line);
			lines.push_back(line);
		}

		sAppName = "Advent of Code 2023 - Day "+std::to_string(DAY);
	}

public:
	bool OnUserCreate() override
	{

		return true;
	}

	bool OnUserUpdate(float fElapsedTime) override
	{
		static std::thread aocSolver(&AoC2023::doStuff,this);

		if(waitForRender){
			draw();
			waitForRender=false;
		}
		return true;
	}
};

int main()
{
	AoC2023 game;
	if (game.Construct(640, 480, 2, 2))
		game.Start();
	return 0;
}
#pragma endregion