a bunch of mini optimizations

src/engine.cpp

@@ -1,8 +1,6 @@
-#include <engine.hpp>
-#include <algorithm>
 #include <cctype>
+#include <engine.hpp>
 #include <chrono>
-#include <format>
 #include <iostream>
 #include <thread>
 
@@ -11,12 +9,14 @@ Window::Window() {
 }
 
 void Window::draw_display() const {
-	std::cout << "\033[H" << std::format(
-		"{} | {} | {}\r\n- + - + -\r\n{} | {} | {}\r\n- + - + -\r\n{} | {} | {}\r\n",
-		view.at(0), view.at(1), view.at(2),
-		view.at(3), view.at(4), view.at(5), 
-		view.at(6), view.at(7), view.at(8)
-	) << std::flush;
+	std::cout << "\033[H"
+		<< view[0] << " | " << view[1] << " | " << view[2]
+		<< "\r\n- + - + -\r\n"
+		<< view[3] << " | " << view[4] << " | " << view[5]
+		<< "\r\n- + - + -\r\n"
+		<< view[6] << " | " << view[7] << " | " << view[8]
+		<< "\r\n"
+	<< std::flush;
 }
 
 Engine::Engine() {
@@ -28,65 +28,50 @@ Engine::Engine() {
 }
 
 void Engine::run() {
-	while (exit_code() && process_input()) {
+	while (process_input()) {
+		bool game_over = exit_code();
+		if(!game_over) { status = "Current Player: " + std::string(1, temp->id) + "\n"; }
 		win.draw_display();
-		std::cout << "Current Player: " << temp->id << "\r\n";
-		std::this_thread::sleep_for(std::chrono::milliseconds((int) (150)));
+		std::cout << status;
+		if(game_over) { break; }
+		std::this_thread::sleep_for(std::chrono::milliseconds(150));
 	}
 }
 
 bool Engine::exit_code() {
-	if(check_line(player1.id)) {
-		std::cout << "Game Over! Player 1 wins!\n";
-		std::this_thread::sleep_for(std::chrono::seconds(2));
-		return false;
-	} else if(check_line(player2.id)) {
-		std::cout << "Game Over! Player 2 wins!\n";
-		std::this_thread::sleep_for(std::chrono::seconds(2));
-		return false;
+	if(check_line(player1.id)) { status = "Game Over! Player 1 wins!"; return true; }
+	if(check_line(player2.id)) { status = "Game Over! Player 2 wins!"; return true; }
+	if(std::count(win.view.begin(), win.view.end(), ' ') == 0) {
+		status = "Game Over! It's a tie!";
+		return true;
 	}
 
-	int filled = std::ranges::count_if(win.view, [](const auto &sym) { return sym != ' '; });
-
-	if(filled == ROW * COL) {
-		std::cout << "Game Over! Its a tie!\n";
-		std::this_thread::sleep_for(std::chrono::seconds(2));
-		return false;
-	}
-
-	return true;
+	return false;
 }
 
 bool Engine::process_input() {
-	int ch, index, x, y;
+	int ch, index;
 	while((ch = getch()) != ERR) {
 		if(ch == 'q') { return false; }
 		if(ch >= '1' && ch <= '9') {
 			index = ch - '1';
-			if(win.view.at(index) != ' ') continue;
-			win.view.at(index) = temp->id;
-			if(temp->id == 'x') { temp = &player2; }
-			else if(temp->id == 'o') { temp = &player1; }
+			if(win.view[index] == ' ') { win.view[index] = temp->id; }
+			temp = (temp == &player1) ? &player2 : &player1;
 		}
 	}
 	return true;
 }
 
-bool Engine::check_line(char id) {
-	for(int i = 0; i < COL; i++) {
-		if(win.view.at(i) == id && win.view.at(i + 3) == id && win.view.at(i + 6) == id) {
-			return true;
-		}
-	}
-	for(int i = 0; i < ROW * COL; i += ROW) {
-		if(win.view.at(i) == id && win.view.at(i + 1) == id && win.view.at(i + 2) == id) {
-			return true;
-		}
-	}
-	auto same_symbol = [&](int first, int last) {
-		return win.view.at(first) == id &&
-		win.view.at(4) == id &&
-		win.view.at(last) == id;
+bool Engine::check_line(char id) const {
+	static constexpr int wins[8][3] = {
+		{0, 1, 2}, {3, 4, 5}, {6, 7, 8},
+		{0, 3, 6}, {1, 4, 7}, {2, 5, 8},
+		{0, 4, 8}, {2, 4, 6}
 	};
-	return same_symbol(0, 8) || same_symbol(2, 6);
+	for(const auto& i : wins) {
+		if(win.view[i[0]] == id && win.view[i[1]] == id && win.view[i[2]] == id) {
+			return true;
+		}
+	}
+	return false;
 }