breakout in c#

pbivens67 · 2021-03-11T16:33:27

I am working on a breakout game using c# and gdi+. I am unsure of how to implement the collision detection between the ball and the bricks. I am thinking about using a list function. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Timers; namespace WindowsFormsApp1 { public partial class Form1 : Form { private static System.Timers.Timer aTimer; int xstep = 5; int ystep = 5; int x1 = 0; int y1 = 0; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { this.DoubleBuffered = true; this.Paint += new PaintEventHandler (Form1_Paint); this.KeyDown += new KeyEventHandler(Form1_KeyDown); aTimer = new System.Timers.Timer(50); aTimer.Elapsed += new ElapsedEventHandler(timer1_Tick); aTimer.Start(); } int move_paddle = 0; private void Form1_KeyDown(object sender, KeyEventArgs e) { switch (e.KeyCode) { case Keys.Left: move_paddle-=5; if(move_paddle <= -320) { move_paddle = -320; } break; case Keys.Right: move_paddle+=5; if(move_paddle >= 320) { move_paddle = 320; } break; default: return; } } private void Form1_Paint(object sender, PaintEventArgs e) { e.Graphics.FillRectangle(Brushes.Black, 0, 0, 1104, 768); e.Graphics.DrawImage(Properties.Resources.paddle, new Rectangle(320+move_paddle, 425, 80, 40)); this.Invalidate(); for (int i = 0; i <= 480; i += 240) { e.Graphics.DrawImage(Properties.Resources.red, new Rectangle(i, 0, 80, 40)); } for (int i = 80; i <= 560; i += 240) { e.Graphics.DrawImage(Properties.Resources.green, new Rectangle(i, 0, 80, 40)); } for (int i = 160; i <= 640; i += 240) { e.Graphics.DrawImage(Properties.Resources.blue, new Rectangle(i, 0, 80, 40)); } for (int i = 0; i <= 480; i += 240) { e.Graphics.DrawImage(Properties.Resources.green, new Rectangle(i, 40, 80, 40)); } for (int i = 80; i <= 560; i += 240) { e.Graphics.DrawImage(Properties.Resources.blue, new Rectangle(i, 40, 80, 40)); } for (int i = 160; i <= 640; i += 240) { e.Graphics.DrawImage(Properties.Resources.red, new Rectangle(i, 40, 80, 40)); } for (int i = 0; i <= 480; i += 240) { e.Graphics.DrawImage(Properties.Resources.blue, new Rectangle(i, 80, 80, 40)); } for (int i = 80; i <= 560; i += 240) { e.Graphics.DrawImage(Properties.Resources.red, new Rectangle(i, 80, 80, 40)); } for (int i = 160; i <= 640; i += 240) { e.Graphics.DrawImage(Properties.Resources.green, new Rectangle(i, 80, 80, 40)); } e.Graphics.DrawImage(Properties.Resources.bullet, new Rectangle(355 + x1, 232 + y1, 10, 10)); } private void timer1_Tick(object sender, EventArgs e) { if (x1 >= 360 || x1 <= -360) { xstep = -xstep; } if (y1 >= 227 || y1 <= -232) { ystep = -ystep; } x1 += xstep; y1 += ystep; } } }

For Beginners C# gdi

Started by pbivens67 February 26, 2021 08:32 PM

22 comments, last by Tom Sloper 3 years, 8 months ago

Shaarigan

1,471

March 11, 2021 06:59 AM

pbivens67 said:
I am using a list to store the bricks, is there a way to remove the bricks from the list

Lists are dangerous as they do allow adding multiple entries of the same brick (however you defined that) to it. Instead go for a HashSet<T> where T is your brick class/struct/id? and make sure you properly overriden GetHashCode and Equals. Then a simple Remove(instance) will erase the brick from the list