using System;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Drawing;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using OpenTK.Graphics;
namespace Snake
{
public partial class GameWindow : Form
{
private int glcontrolFieldWidth = 20, glcontrolFieldHeight = 20; //Playing Field
public int speedincr = 0; //Speed, Increase by 5% Check out GenerateFood()
public int GamePoints = -10; //Score
private int shaderProgram, color_attribute; //Shader Program
private int view, model, projection;//Shader Program
private Matrix4 ViewMatrix, ModelMatrix, ProjectionMatrix; // Matrix4
private List<Point> snake = new List<Point>() { new Point(1, 1) }; //Where the Snake Start off
private Point snakeDirection = new Point(1, 0);//Snake Direction
private Point mouse = new Point(); //Food
private Random random = new Random(); //Random Genereator
public bool bGameOver;
private static readonly Timer timer = new Timer();
public GameWindow()
{
//Form1.Designer
InitializeComponent();
// Centers the form on the current screen
CenterToScreen();
// Create a timer
//var timer = new Timer();
timer.Tick += new EventHandler(GameLoop);
timer.Interval = 150; // This is the snake inital speed
timer.Start();
// Generate an initial random position for the food
GenerateFood();
}
public void GameOver(bool bGameOver)
{
//Snake Collision with its own body
//for (int i = 0; i < snake.Count; i++)
//{
// //if Snake equal itself then snake hasn't touch any other parts of its body
// if (snake[0].X == snake[i].X || snake[0].Y == snake[i].Y)
// {
// this.bGameOver = false;
// //Console.WriteLine("Snake " + snake2[i].X + "," + snake2[i].Y);
// //Console.WriteLine("Snake2 " + snake[i].X + "," + snake[i].Y);
// }
// else
// {
// this.bGameOver = true;
// //Console.WriteLine(snake[i].X+","+snake[i].Y);
// }
//}
////---Display GameOver Message If Where Dead-- - //
//if (bGameOver == true)
//{
// Console.WriteLine("Game Over! Push Enter to Continue");
// if (bGameOver == false)
// {
// //Game Start Over
// }
//}
return;
} //GameOver Reset Game
public void GameLoop(object sender, System.EventArgs e)
{
// Update coordinates of game entities and check collisions
Update();
// UpdateWall check collisions with snake to bounce off wall
UpdateWall();
GameOver(bGameOver);
glControl.Invalidate();
} //Basic of the Game Loop
private void UpdateWall()
{
// Snake collison with Walls
if (snake[0].X < 1)
{
//snake[0].X = (glcontrolFieldWidth - 2) / 10; //Warp to right
//snakeDirection.X = (snake[0].X + glcontrolFieldWidth-2)/10;
//snakeDirection.X = (glcontrolFieldWidth-2)/10;
snakeDirection.X = (int)(glcontrolFieldWidth-0.5) / 10;
snakeDirection.Y = (int)(glcontrolFieldWidth-0.5) / 10;
Console.WriteLine("Snake hit left wall");
}
else if (snake[0].X > glcontrolFieldWidth - 2)
{
//snakeDirection.X = 0; //Warp to left
snakeDirection.X = (int)(glcontrolFieldWidth - 0.5) / -10;
snakeDirection.Y = (int)(glcontrolFieldWidth - 0.5) / -10;
Console.WriteLine("Snake hit right wall");
}
if (snake[0].Y < 1)
{
//snake.getFirst().y = windowHeight / 10; //Warp to bottom
//snakeDirection.Y = (snake[0].Y + glcontrolFieldWidth - 2)/10;
snakeDirection.X = (int)(glcontrolFieldHeight - 0.5)/10;
snakeDirection.Y = (int)(glcontrolFieldHeight - 0.5)/10;
Console.WriteLine("Snake hit Top wall");
}
else if (snake[0].Y > glcontrolFieldHeight - 2)
{
//snake.getFirst().y = 0; //Warp to top
snakeDirection.X = (int)(glcontrolFieldHeight - 0.5) / -10;
snakeDirection.Y = (int)(glcontrolFieldHeight - 0.5) / -10;
Console.WriteLine("Snake hit Bottom wall");
}
} //Wall Collision
private new void Update()
{
// Calculate a new position of the head of the snake
Point newHeadPosition = new Point(snake[0].X + snakeDirection.X, snake[0].Y + snakeDirection.Y);
// Insert new position in the beginning of the snake list
snake.Insert(0, newHeadPosition);
snake.RemoveAt(snake.Count - 1);
// Check snake collision with the food
if (snake[0].X != mouse.X || snake[0].Y != mouse.Y)
{
return;
}
else
{
//Snake Grow
snake.Add(new Point(mouse.X, mouse.Y));
}
Console.WriteLine();
//foreach (Point aPart in snake)
//{
// Console.WriteLine(aPart);
//}
// Generate a new food(mouse) position
GenerateFood();
}//...more code.
The rest of the code in GitHub @mrcoffeecode Snake Game C#. I manage to create the wall,food and snake. Also the detection with food and walls. Now am stuck in trying to figure out Game Over basically the snake detect it self getting bitten. The code is ready to run without any errors you just need opentk, opengl, openglcontrol.dll.
It is sufficient to evaluate if the head of the snake hits its body. Test if snake[0] hits any element from 1 to snake.Count-1.
You have to verify if the x component and (&&) the y component is equal:
//Snake Collision with its own body
for (int i = 1; i < snake.Count; i++)
{
//if Snake equal itself then snake hasn't touch any other parts of its body
if (snake[0].X == snake[i].X && snake[0].Y == snake[i].Y)
{
this.bGameOver = true;
break;
}
}
Note, in your code every time when the snake grows, a collision of the head with the body will be detected, because you insert a new element at the had position.
You can get rid about set, if you just avoid to remove the tail element of the snake instead:
private new void Update()
{
// Calculate a new position of the head of the snake
Point newHeadPosition = new Point(snake[0].X + snakeDirection.X, snake[0].Y + snakeDirection.Y);
// Insert new position in the beginning of the snake list
snake.Insert(0, newHeadPosition);
# snake.RemoveAt(snake.Count - 1); <--------- DELETE
// Check snake collision with the food
if (snake[0].X != mouse.X || snake[0].Y != mouse.Y)
{
# remove tail if snake does not grow
snake.RemoveAt(snake.Count - 1); # <---------- ADD
return;
}
else
{
//Snake Grow
// snake.Add(new Point(mouse.X, mouse.Y)); <------ DELETE
}
Console.WriteLine();
// Generate a new food(mouse) position
GenerateFood();
} //Events