wip

include/engine.hpp

@@ -1,8 +1,8 @@
-#ifndef ENGINE_HPP
-#define ENGINE_HPP
+#pragma once
 
 #include <string>
-#include <vector>
+#include <deque>
+#include <array>
 
 constexpr int ROW = 11;
 constexpr int COL = 11;
@@ -21,7 +21,7 @@ struct vec2 {
 struct Window {
 	std::array<std::array<char, COL>, ROW> view;
 	void draw_display();
-	void update_display(vec2 &head, vec2 &fruit, std::vector<vec2> &buf);
+	void update_display(vec2 &head, vec2 &fruit, std::deque<vec2> &buf);
 };
 
 class Engine {
@@ -32,7 +32,7 @@ public:
 
 private:
 	Window win;
-	std::vector<vec2> tail;
+	std::deque<vec2> tail;
 	std::string status;
 	vec2 head { COL / 2, ROW / 2 };
 	vec2 fruit { rand() % COL, rand() % ROW };
@@ -45,5 +45,3 @@ private:
 	void add_tail_and_respawn_fruit();
 	bool exit_summary();
 };
-
-#endif // ELEMENT_HPP

src/engine.cpp

@@ -17,8 +17,7 @@ void Window::draw_display() {
 	refresh();
 }
 
-void Window::update_display(vec2 &head, vec2 &fruit, std::vector<vec2> &buf) {
-	for(auto& row : view) row.fill('.');
+void Window::update_display(vec2 &head, vec2 &fruit, std::deque<vec2> &buf) {
 	view[head.y][head.x] = '*';
 	view[fruit.y][fruit.x] = 'o';
 
@@ -36,6 +35,7 @@ Engine::Engine() {
 	noecho();
 	curs_set(0);
 	nodelay(stdscr, true);
+	for(auto& row : win.view) row.fill('.');
 }
 
 Engine::~Engine() { endwin(); }
@@ -59,7 +59,7 @@ void Engine::run() {
 bool Engine::process_input() {
 	int ch;
 	while((ch = getch()) != ERR) {
-		if(ch == 'q') { return false; }
+		if(ch == 'q') { return status = "Quitting", false; }
 		else if(ch == 'w') { if(dir != Direction::DOWN)  dir = Direction::UP; }
 		else if(ch == 's') { if(dir != Direction::UP)    dir = Direction::DOWN; }
 		else if(ch == 'd') { if(dir != Direction::LEFT)  dir = Direction::RIGHT; }
@@ -85,12 +85,15 @@ void Engine::determine_index_zero_pos() {
 	else if(dir == Direction::RIGHT) { head.x = (head.x + 1) % COL; }
 	else if(dir == Direction::UP) 	 { head.y = (head.y + ROW - 1) % ROW; }
 	else if(dir == Direction::DOWN)  { head.y = (head.y + 1) % ROW; }
+	win.view[prev_head.y][prev_head.x] = '.';
 }
 
 void Engine::move_tail_indicies() {
 	if(tail.empty()) return;
+	vec2 last_tail = tail.back();
 	tail.pop_back();
-	tail.insert(tail.begin(), prev_head);
+	tail.push_front(prev_head);
+	if(last_tail.x < COL && last_tail.y < ROW) { win.view[last_tail.y][last_tail.x] = '.'; }
 }
 
 void Engine::add_tail_and_respawn_fruit() {
@@ -99,6 +102,6 @@ void Engine::add_tail_and_respawn_fruit() {
 	do { new_pos.set((rand() % ROW), (rand() % COL)); }
 	while (new_pos == head || std::any_of(tail.begin(), tail.end(), [&](const vec2& seg) { return seg == new_pos; }));
 	fruit = new_pos;
-	tail.insert(tail.begin(), vec2 { ROW, COL });
+	tail.push_front(vec2 { ROW, COL });
 	m_score++;
 }