commando/Enemy.cs.txt at master · Derposoft/commando · GitHub

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace Commando
{
    public class Enemy
    {
        Game1 game;

        public Texture2D spawner_texture;
        public Texture2D texture;
        public Texture2D bulletTexture;

        public Vector2 spawner_position;
        public Vector2 position;
        public Vector2 origin;
        public Rectangle enemyRectangle;
        public Color alienColor;
        public List<Bullet> enemyBullets = new List<Bullet>();

        public float rotation;
        public bool isVisible = true;
        public float speed;
        public int health;
        int timer = 0;

        public Enemy(Texture2D enemyTexture, Texture2D spawnerTexture, Texture2D BulletTexture, Vector2 spawnerPos, Color AlienColor, Game1 Game)
        {
            spawner_texture = spawnerTexture;
            texture = enemyTexture;
            bulletTexture = BulletTexture;
            rotation = 0;
            spawner_position = spawnerPos;
            position = spawner_position;
            origin = new Vector2(texture.Bounds.Width / 2, texture.Bounds.Height / 2);
            alienColor = AlienColor;

            game = Game;

            if (alienColor == Color.White)
            {
                health = 1;
                speed = 3.0f;
            }
            if (alienColor == Color.Blue)
            {
                health = 2;
                speed = 0.5f;
            }
            if (alienColor == Color.Red)
            {
                health = 50;
                speed = 0.2f;
            }
            if (alienColor == Color.Green)
            {
                health = 100;
                speed = 0.1f;
            }
        }

        public void UpdateEnemy(ref Player p)
        {
            timer += 1;
            if (isVisible)
            {
                enemyRectangle =
                    new Rectangle((int)position.X, (int)position.Y, texture.Bounds.Width, texture.Bounds.Height);
            }
            else
            {
                enemyRectangle = new Rectangle(-1000, -1000, 1, 1);
            }

            Vector2 distance = new Vector2(position.X - p.position.X, position.Y - p.position.Y);

            rotation = (float)Math.Atan2(distance.Y, distance.X);

            if (alienColor == Color.Green)
            {
                if (timer % 120 == 0 && enemyRectangle != new Rectangle(-1000, -1000, 1, 1))
                {
                    Bullet newBullet = new Bullet(game.Content.Load<Texture2D>("commandoBullet"));

                    newBullet.velocity = new Vector2((float)Math.Cos(rotation),
                            (float)Math.Sin(rotation)) * -3;
                    newBullet.position += position + newBullet.velocity * 5.0f;

                    Vector2 distance_2 = new Vector2();
                    distance_2.X = p.position.X - position.X;
                    distance_2.X = p.position.Y - position.Y;

                    newBullet.rotation = (float)Math.Atan2(distance_2.Y, distance_2.X);
                    newBullet.isVisible = true;
                    if (enemyBullets.Count < 3000)
                        enemyBullets.Add(newBullet);

                }

                foreach (Bullet b in enemyBullets)
                {
                    b.rotation += MathHelper.ToRadians(5);
                }
                for (int i = 0; i < enemyBullets.Count; i++)
                {
                    if (!enemyBullets[i].isVisible)
                    {
                        enemyBullets.RemoveAt(i);
                        i--;
                    }
                }
            }

            Vector2 velocity = new Vector2((float)Math.Cos(rotation),
                (float)Math.Sin(rotation)) * speed;

            position -= velocity;
        }

        public void Draw(SpriteBatch SB)
        {
            SB.Begin();

            SB.Draw(spawner_texture, spawner_position, alienColor);

            foreach (Bullet b in enemyBullets)
            {
               // if (Vector2.Distance(position, b.position) < 2000)
                //{
                    SB.End();
                    b.Draw(SB);
                    SB.Begin();
               // }
            }

            if (isVisible && enemyRectangle != new Rectangle(-1000, -1000, 1, 1))
            {
                SB.Draw(texture, position, null, alienColor,
                    rotation, origin, 1.0f, SpriteEffects.None, 0);
            }

            SB.End();
        }
    }
}