Day 3 complete!

Day 3/main.cpp

@@ -24,19 +24,27 @@ void wait(int pauseMs=0){
 #pragma endregion
 
 const int DAY = 3;
-Run runInput=FILE1;
+Run runInput=FILE2;
 
 struct numb{
 	vi2d pos;
+	vi2d endPos;
 	int number;
+	bool operator<(numb&rhs){
+		return number<rhs.number;
+	}
+	bool operator==(numb&rhs){
+		return number==rhs.number;
+	}
 };
 
 std::vector<numb>parts;
 std::vector<std::vector<char>>board;
+std::vector<vi2d>gears;
 
 void doStuff2(){
 	while(true){ //lines is accessible as a global.
-		int sum=0;
+		long sum=0;
 		vi2d pos={};
 		for(std::string&line:lines){
 			std::string numb="";
@@ -44,6 +52,7 @@ void doStuff2(){
 			std::vector<char>row;
 			vi2d initialNumberPos={};
 			for(int i=0;i<line.size();i++){
+				if(line[i]=='*')gears.push_back(pos);
 				if(line[i]>='0'&&line[i]<='9'){
 					if(numb.length()==0){
 						initialNumberPos=pos;
@@ -52,7 +61,7 @@ void doStuff2(){
 				}else
 				if(numb.length()>0){
 					//A number has been parsed.
-					parts.push_back({initialNumberPos,atoi(numb.c_str())});
+					parts.push_back({initialNumberPos,pos+vi2d{-1,0},atoi(numb.c_str())});
 					numb="";
 				}
 				row.push_back(line[i]);
@@ -60,41 +69,49 @@ void doStuff2(){
 			}
 			if(numb.length()>0){
 				//A number has been parsed.
-				parts.push_back({initialNumberPos,atoi(numb.c_str())});
+				parts.push_back({initialNumberPos,pos+vi2d{-1,0},atoi(numb.c_str())});
 			}
 			board.push_back(row);
 			pos.y++;
 			pos.x=0;
 			std::cout<<line<<std::endl;
 		}
-
-		for(numb&number:parts){
-			int myNumb=number.number;
-			vi2d startingPos=number.pos;
-			while(myNumb>0){
-				auto validatePos=[&](vi2d checkPos){
-					return startingPos.y+checkPos.y>0&&startingPos.y+checkPos.y<board.size()-1&&
-						startingPos.x+checkPos.x>0&&startingPos.x+checkPos.x<board[startingPos.y+checkPos.y].size()-1;
-				};
-				auto testChar=[&](char test){
-					if(test!='.'&&!(test>='0'&&test<='9')){
-						sum+=number.number;
-						std::cout<<number.number<<" was adjacent to a symbol"<<std::endl;
-						return true;
+		
+		for(vi2d&pos:gears){
+			std::function<numb*(vi2d)>validatePos=[&](vi2d checkPos){
+				if(pos.y+checkPos.y>=0&&pos.y+checkPos.y<=board.size()-1&&
+					pos.x+checkPos.x>=0&&pos.x+checkPos.x<=board[pos.y+checkPos.y].size()-1){
+					char c=board[pos.y+checkPos.y][pos.x+checkPos.x];
+					if(c>='0'&&c<='9'){
+						for(numb&number:parts){
+							if(number.pos.y==pos.y+checkPos.y&&number.pos.x<=pos.x+checkPos.x&&number.endPos.x>=pos.x+checkPos.x){
+								return &number;
+							}
+						}
+						throw; //Something went terribly wrong.
 					}
-					return false;
-				};
-				vi2d checkPos={1,0};
-				if(validatePos({1,0})){if(testChar(board[startingPos.y][startingPos.x+1]))break;}
-				if(validatePos({0,1})){if(testChar(board[startingPos.y+1][startingPos.x]))break;}
-				if(validatePos({-1,0})){if(testChar(board[startingPos.y][startingPos.x-1]))break;}
-				if(validatePos({0,-1})){if(testChar(board[startingPos.y-1][startingPos.x]))break;}
-				if(validatePos({1,1})){if(testChar(board[startingPos.y+1][startingPos.x+1]))break;}
-				if(validatePos({1,-1})){if(testChar(board[startingPos.y-1][startingPos.x+1]))break;}
-				if(validatePos({-1,1})){if(testChar(board[startingPos.y+1][startingPos.x-1]))break;}
-				if(validatePos({-1,-1})){if(testChar(board[startingPos.y-1][startingPos.x-1]))break;}
-				myNumb/=10;
-				startingPos.x++;
+				}
+				numb*test=nullptr;
+				return test;
+			};
+			numb*val;
+			std::vector<numb>numbers;
+			if((val=validatePos({1,0}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({0,1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({-1,0}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({0,-1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({1,1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({1,-1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({-1,1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if((val=validatePos({-1,-1}))!=nullptr){numbers.push_back(*val);val=nullptr;}
+			if(numbers.size()>=2){
+				std::sort(numbers.begin(),numbers.end());
+				auto last=std::unique(numbers.begin(),numbers.end());
+				numbers.erase(last,numbers.end());
+				if(numbers.size()==2){
+					sum+=numbers[0].number*numbers[1].number;
+					std::cout<<numbers[0].number<<"*"<<numbers[1].number<<std::endl;
+				}
 			}
 		}
 		std::cout<<sum<<std::endl;
@@ -102,7 +119,7 @@ void doStuff2(){
 		break;
 	}
 }
-
+/*
 void doStuff(){
 	while(true){ //lines is accessible as a global.
 		int sum=0;
@@ -171,7 +188,7 @@ void doStuff(){
 		break;
 	}
 }
-
+*/
 void draw(){ //Only use Sprites! If using decals, you must reference global variables!
 	Clear(BLACK);
 	int count=0;
@@ -189,10 +206,16 @@ void draw(){ //Only use Sprites! If using decals, you must reference global vari
 		int numb=number.number;
 		while(numb>0){
 			numbStr=std::to_string(numb%10)+numbStr;
+			if(numb<10){
+				DrawString(number.endPos*8,std::string(1,numbStr[numbStr.size()-1]),GREEN);
+			}
 			numb/=10;
 		}
 		DrawString(number.pos*8,numbStr,RED);
 	}
+	for(vi2d&pos:gears){
+		DrawString(pos*8,std::string(1,'*'),BLUE);
+	}
 }
 
 #pragma region Hidden Engine Stuff