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Bullet.cs
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Bullet.cs
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using System;
using System.Data;
using SplashKitSDK;
namespace RobotDodge
{
public class Bullet
{
private Bitmap _bulletBitmap = new Bitmap("Bullet", "Bullet.png");
private double _x, _y, _angle;
private bool _active = false;
public double X { get; private set; }
public double Y { get; private set; }
public Bullet(double x, double y, double angle)
{
_x = x - _bulletBitmap.Width / 2;
_y = y - _bulletBitmap.Height / 2;
_angle = angle;
_active = true;
}
public void Update()
{
const int BULLET_SPEED = 8;
Vector2D movement = new Vector2D();
Matrix2D rotation = SplashKit.RotationMatrix(_angle);
movement.X += BULLET_SPEED;
movement = SplashKit.MatrixMultiply(rotation, movement);
_x += movement.X;
_y += movement.Y;
if ((_x > SplashKit.ScreenWidth() || _x < 0) || _y > SplashKit.ScreenHeight() || _y < 0)
{ _active = false; }
}
public void Draw()
{
if (_active)
{
DrawingOptions options = SplashKit.OptionRotateBmp(_angle);
_bulletBitmap.Draw(_x, _y, options);
}
}
public Circle CollisionCircle
{
get
{
double centerX = _x + (_bulletBitmap.Width / 2);
double centerY = _y + (_bulletBitmap.Height / 2);
return SplashKit.CircleAt(centerX, centerY, 10);
}
}
}
}