initial implementation

-implemented basic movement

config/game-config.txt

@@ -1,4 +1,11 @@
 framerate 60
 
-playerColor 1 1 1
+tickRate 60
 
+playerHeadColor 1 1 1
+
+playerBodyColor 1 1 1
+
+headGridStartPos 10 10
+
+gridSize 50

include/Game.h

@@ -1,36 +1,14 @@
 #pragma once
 
-#include <vector>
-
 #include <Util.h>
-
+#include <Player.h>
+#include <GameConfig.h>
 #include <SFML/Graphics.hpp>
 #include <SFML/Audio.hpp>
 #include <imgui-SFML.h>
 #include <imgui.h>
 
 
-class SnakeNode
-{
-
-};
-
-struct Player 
-{
-	Player() = default;
-	Player(sf::Vector2i gridPos_in);
-
-	sf::Vector2i gridPos{};
-	sf::Vector2i previousGridPos{};
-	sf::Vector2f windowPos{};
-	int score{};
-	int lives{3};
-	bool left{false};
-	bool right{false};
-	bool up{false};
-	bool down{false};
-};
-
 class Game 
 {
 public:
@@ -38,6 +16,8 @@ public:
 
 	void run();
 
+	bool init();
+
 private:
 	void imgui();
 
@@ -57,19 +37,26 @@ private:
 
 	void scoreSystem();
 
+	void failState();
+
 
 private:
+	GameConfig config;
 	sf::Clock clock; 
 	sf::RenderWindow window;
 	sf::Font font;
-	sf::Text lives;
 	sf::Text score;
 	
-	Player player;
+	sf::SoundBuffer failSoundBuffer;
 
-	// mostly used for imgui
+	sf::RectangleShape tempRect;
-	int framerate{};
+	
-	float volume{};
+	//sf::Sound failSound;
+	
+	Player player{};
+
+	size_t frameCount{};
 	bool useImgui;
-	static constexpr unsigned int numPhysicsUpdates{4};
+	bool fail;
+	bool running{true};
 };

include/GameConfig.h

@@ -0,0 +1,13 @@
+#include <Util.h>
+#include <SFML/Graphics.hpp>
+
+struct GameConfig
+{
+	float volume{10};
+    int tickRate{};
+	int framerate{};
+    Color playerHeadColor;
+    Color playerBodyColor;
+    sf::Vector2i headGridStartPos;
+    float gridSize;
+};

include/Player.h

@@ -0,0 +1,38 @@
+
+#include <SFML/Graphics.hpp>
+
+#include <Util.h>
+
+enum class Direction
+{
+	up,
+	down,
+	left,
+	right
+};
+
+struct SnakeNode
+{
+	SnakeNode(sf::Vector2i gridPos_in, sf::Color color_in = sf::Color::White);
+	sf::Vector2f windowPos{};
+	sf::Vector2i gridPos{};
+	sf::Vector2i previousGridPos{};
+	Color color{};
+};
+
+struct Player 
+{
+	Player() = default;
+
+	SnakeNode& head();
+
+	std::vector<SnakeNode> body;
+
+	int score{};
+	Direction facing{Direction::up};
+	Direction inputBuffer{};
+	bool left{false};
+	bool right{false};
+	bool up{false};
+	bool down{false};
+};

src/Game.cpp

@@ -12,22 +12,36 @@
 
 
 Game::Game(bool useImgui_in)
-	: window({sf::VideoMode({ 1920u, 1080u }), "project-breakout"})
+	: config()
+	, window({sf::VideoMode({ 1920u, 1080u }), "project-snake"})
 	, font("assets/fonts/ChakraPetch-Regular.ttf")
-	, lives(font)
 	, score(font)
-	, volume(10)
 	, useImgui(useImgui_in)
 { 
+	if (!ImGui::SFML::Init(window)) 
+	{
+		std::cout << "ERROR: Could not open window\n";
+		return;
+	}
 
-	if (!ImGui::SFML::Init(window)) return;
+	if (!parseConfigFile()) 
+	{
+		std::cout << "ERROR: Could not parse config file\n";
+		window.close();
+		return;
+	}
 
-	if (!parseConfigFile()) return;
+	player.body.reserve(100);
+	player.body.emplace_back(config.headGridStartPos);
+	player.head().windowPos.x = player.head().gridPos.x * config.gridSize;
+	player.head().windowPos.y = player.head().gridPos.y * config.gridSize;
 
-	lives.setPosition({10, static_cast<float>(window.getSize().y - 40)});
+	tempRect.setSize({config.gridSize, config.gridSize});
-	score.setPosition({10, static_cast<float>(window.getSize().y - 80)});
+	tempRect.setOutlineThickness(5);
 
-	window.setFramerateLimit(framerate);
+	score.setPosition({10, static_cast<float>(window.getSize().y - 40)});
+
+	window.setFramerateLimit(config.framerate);
 
 }
 
@@ -44,7 +58,35 @@ bool Game::parseConfigFile()
 	std::string inputBuff;
 	while(configFile >> inputBuff)
 	{
+		if (inputBuff == "framerate")
+		{
+			configFile >> config.framerate;
+		}
 
+		if (inputBuff == "tickRate")
+		{
+			configFile >> config.tickRate;
+		}
+
+		if (inputBuff == "playerHeadColor")
+		{
+			configFile >> config.playerHeadColor.r >> config.playerHeadColor.g >> config.playerHeadColor.b;
+		}
+
+		if (inputBuff == "playerBodyColor")
+		{
+			configFile >> config.playerBodyColor.r >> config.playerBodyColor.g >> config.playerBodyColor.b;
+		}
+		
+		if (inputBuff == "headGridStartPos")
+		{
+			configFile >> config.headGridStartPos.x >> config.headGridStartPos.y;
+		}
+
+		if (inputBuff == "gridSize")
+		{
+			configFile >> config.gridSize;
+		}
 	}
 
 	return true;
@@ -131,18 +173,83 @@ void Game::input()
 
 void Game::collision()
 {
+	const size_t limit = player.body.size();
+	for (size_t i = 1; i < limit; i++)
+	{
+		if (player.head().gridPos == player.body.at(i).gridPos)
+		{
+			fail = true;
+			//failSound.play();
+			return;
+		}
 
+	}
 
 }
 
 void Game::movement()
 {
+	if (player.left and !player.right and (player.facing == Direction::up or player.facing == Direction::down))
+	{
+		player.inputBuffer = Direction::left;
+	}
+
+	if (player.right and !player.left and (player.facing == Direction::up or player.facing == Direction::down))
+	{
+		player.inputBuffer = Direction::right;
+	}
+
+	if (player.up and !player.down and (player.facing == Direction::left or player.facing == Direction::right))
+	{
+		player.inputBuffer = Direction::up;
+	}
+
+	if (player.down and !player.up and (player.facing == Direction::left or player.facing == Direction::right))
+	{
+		player.inputBuffer = Direction::down;
+	}
+
+	if (frameCount % config.tickRate != 0) return;
+
+	switch (player.inputBuffer)
+	{
+        case Direction::up:
+			player.head().previousGridPos = player.head().gridPos;
+			player.head().gridPos += sf::Vector2i{ 0, -1 };
+			player.facing = Direction::up;
+			// std::cout << "up\n";
+			break;
+
+        case Direction::down:
+			player.head().previousGridPos = player.head().gridPos;
+			player.head().gridPos += sf::Vector2i{ 0, 1 };
+			player.facing = Direction::down;
+			// std::cout << "down\n";
+			break;
+
+        case Direction::left:
+			player.head().previousGridPos = player.head().gridPos;
+			player.head().gridPos += sf::Vector2i{ -1, 0 };
+			player.facing = Direction::left;
+			// std::cout << "left\n";
+			break;
+
+        case Direction::right:
+			player.head().previousGridPos = player.head().gridPos;
+			player.head().gridPos += sf::Vector2i{ 1, 0 };
+			player.facing = Direction::right;
+			// std::cout << "right\n";
+			break;
+	}
+
+	player.head().windowPos.x = player.head().gridPos.x * config.gridSize;
+	player.head().windowPos.y = player.head().gridPos.y * config.gridSize;
 
 }
 
 void Game::imgui()
 {
-	ImGui::SetNextWindowCollapsed(false, ImGuiCond_Once);
+	ImGui::SetNextWindowCollapsed(true, ImGuiCond_Once);
 	ImGui::SetNextWindowSize({490,375}, ImGuiCond_Once);
 	ImGui::SetNextWindowPos({26,29}, ImGuiCond_Once);
 	if(!ImGui::Begin("menu"))
@@ -156,7 +263,7 @@ void Game::imgui()
 	ImGui::Text("R: reset game");
 	ImGui::Unindent();
 
-	if (ImGui::SliderFloat("Game Volume", &volume, 0, 100, "%.1f"))
+	if (ImGui::SliderFloat("Game Volume", &config.volume, 0, 100, "%.1f"))
 	{
 
 	}
@@ -169,10 +276,15 @@ void Game::render()
 {
 		window.clear();
 
-		lives.setString("Lives: " + std::to_string(player.lives));
+		for (auto& node : player.body)
+		{
+			tempRect.setFillColor(node.color.sfml());
+			tempRect.setPosition(node.windowPos);
+			window.draw(tempRect);
+		}
+
 		score.setString("Score: " + std::to_string(player.score));
 
-		window.draw(lives);
 		window.draw(score);
 
 		ImGui::SFML::Render(window);
@@ -195,14 +307,27 @@ void Game::resetGame()
 
 }
 
+void Game::failState()
+{
+	// if (failSound.getStatus() == sf::Sound::Status::Stopped)
+	// {
+	// 	resetGame();
+	// 	return;
+	// }
+}
+
 void Game::run()
 {
 	while(window.isOpen())
 	{		
 		ImGui::SFML::Update(window, clock.restart());
 
+		frameCount++;
+
 		input();
 
+		if (!fail)
+		{
 			movement();
 
 			collision();
@@ -210,6 +335,11 @@ void Game::run()
 			soundSystem();
 
 			scoreSystem();
+		}
+		else
+		{
+			failState();
+		}
 
 		imgui();
 

src/Player.cpp

@@ -0,0 +1,11 @@
+#include <Player.h>
+
+SnakeNode::SnakeNode(sf::Vector2i gridPos_in, sf::Color color_in)
+	: gridPos(gridPos_in)
+	, color(color_in)
+{ }
+
+SnakeNode& Player::head()
+{
+	return body[0];
+}

src/main.cpp

@@ -11,7 +11,6 @@ int main(int argc, char* argv[])
 			useImgui = false;
 		}	
 	}
-
 	Game game(useImgui);
 
 	game.run();