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Added new enemy ships. Cleaned up enemy code.

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This commit is contained in:
Brian Bicknell
2026-01-05 09:16:58 -05:00
parent 7f47e2617c
commit 804c03b1d8
9 changed files with 333 additions and 169 deletions
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18
AlientAttack.MonoGame/GameLoops/GameLoop.cs
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@@ -344,6 +344,24 @@ internal class GameLoop : GameLoopBase
Sprites.Add(enemy);
_spawnNewEnemyThreshold = 100 + _random.Next(0, 100);
}
else if (randomNumber == 3)
{
Enemy02Green enemy = new(_random.Next(0, ViewTransform.ScreenWidth - 64), -64);
Sprites.Add(enemy);
_spawnNewEnemyThreshold = 100 + _random.Next(0, 100);
}
else if (randomNumber == 4)
{
Enemy02Red enemy = new(_random.Next(0, ViewTransform.ScreenWidth - 64), -64);
Sprites.Add(enemy);
_spawnNewEnemyThreshold = 100 + _random.Next(0, 100);
}
else if (randomNumber == 5)
{
Enemy02Teal enemy = new(_random.Next(0, ViewTransform.ScreenWidth - 64), -64);
Sprites.Add(enemy);
_spawnNewEnemyThreshold = 100 + _random.Next(0, 100);
}
}
}
}

72
AlientAttack.MonoGame/Things/Enemies/Enemy02Green.cs Normal file
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@@ -0,0 +1,72 @@
using AlienAttack.MonoGame.Things.Bullets;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace AlienAttack.MonoGame.Things.Enemies;
public class Enemy02Green : EnemyShip
{
public const int Width = 64;
public const int Height = 64;
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected override int Health { get; set; } = 5;
public Enemy02Green(int x, int y) : base(x, y)
{
BoundBox = new(0, 0, Width, Height);
YVelocity = 2;
XVelocity = 0;
}
public override void Draw(SpriteDrawArgs args)
{
int frame = XVelocity > 0 ? 2 : XVelocity < 0 ? 3 : 1;
SpriteEffects spriteEffects = XVelocity > 0 ? SpriteEffects.FlipHorizontally : SpriteEffects.None;
Texture2D texture = args.Content.Load<Texture2D>(@$"Sprites\Enemy02Green_Frame_{frame}_png_processed");
//SpriteEffects spriteEffects = SpriteEffects.None;
args.SpriteBatch.Draw(texture, Position, null, DrawColor, 0, new Vector2(0, 0), 1, spriteEffects, 1);
base.Draw(args);
}
protected override void TryMove(SpriteUpdateContext context)
{
if (XPosition + BoundBox.Width >= context.ViewTransform.ScreenWidth)
{
XPosition = context.ViewTransform.ScreenWidth - BoundBox.Width;
XVelocity *= -1;
}
else if (XPosition <= 0)
{
XPosition = 0;
XVelocity *= -1;
}
}
protected override void TryFire(SpriteUpdateContext context)
{
if (CurrentFireThreshold > 0)
{
CurrentFireThreshold--;
}
if (CurrentFireThreshold == 0 && context.Random.Next(0, 30) == 1)
{
float originX = XPosition + (BoundBox.Width / 2) - (7 / 2);
//context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
//context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, -1, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 3, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 1, 2 + YVelocity, this));
CurrentFireThreshold = FireThreshold;
context.AudioManager.PlayEnemyFire();
}
}
}

72
AlientAttack.MonoGame/Things/Enemies/Enemy02Red.cs Normal file
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@@ -0,0 +1,72 @@
using AlienAttack.MonoGame.Things.Bullets;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace AlienAttack.MonoGame.Things.Enemies;
public class Enemy02Red : EnemyShip
{
public const int Width = 64;
public const int Height = 64;
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected override int Health { get; set; } = 5;
public Enemy02Red(int x, int y) : base(x, y)
{
BoundBox = new(0, 0, Width, Height);
YVelocity = 3;
XVelocity = 0;
}
public override void Draw(SpriteDrawArgs args)
{
int frame = XVelocity > 0 ? 2 : XVelocity < 0 ? 3 : 1;
SpriteEffects spriteEffects = XVelocity > 0 ? SpriteEffects.FlipHorizontally : SpriteEffects.None;
Texture2D texture = args.Content.Load<Texture2D>(@$"Sprites\Enemy02Red_Frame_{frame}_png_processed");
//SpriteEffects spriteEffects = SpriteEffects.None;
args.SpriteBatch.Draw(texture, Position, null, DrawColor, 0, new Vector2(0, 0), 1, spriteEffects, 1);
base.Draw(args);
}
protected override void TryMove(SpriteUpdateContext context)
{
if (XPosition + BoundBox.Width >= context.ViewTransform.ScreenWidth)
{
XPosition = context.ViewTransform.ScreenWidth - BoundBox.Width;
XVelocity *= -1;
}
else if (XPosition <= 0)
{
XPosition = 0;
XVelocity *= -1;
}
}
protected override void TryFire(SpriteUpdateContext context)
{
if (CurrentFireThreshold > 0)
{
CurrentFireThreshold--;
}
if (CurrentFireThreshold == 0 && context.Random.Next(0, 30) == 1)
{
float originX = XPosition + (BoundBox.Width / 2) - (7 / 2);
//context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
//context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, -1, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 3, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 1, 2 + YVelocity, this));
CurrentFireThreshold = FireThreshold;
context.AudioManager.PlayEnemyFire();
}
}
}

72
AlientAttack.MonoGame/Things/Enemies/Enemy02Teal.cs Normal file
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@@ -0,0 +1,72 @@
using AlienAttack.MonoGame.Things.Bullets;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace AlienAttack.MonoGame.Things.Enemies;
public class Enemy02Teal : EnemyShip
{
public const int Width = 64;
public const int Height = 64;
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected override int Health { get; set; } = 5;
public Enemy02Teal(int x, int y) : base(x, y)
{
BoundBox = new(0, 0, Width, Height);
YVelocity = 1;
XVelocity = 4;
}
public override void Draw(SpriteDrawArgs args)
{
int frame = XVelocity > 0 ? 2 : XVelocity < 0 ? 3 : 1;
SpriteEffects spriteEffects = XVelocity > 0 ? SpriteEffects.FlipHorizontally : SpriteEffects.None;
Texture2D texture = args.Content.Load<Texture2D>(@$"Sprites\Enemy02_Teal_Frame_{frame}_png_processed");
//SpriteEffects spriteEffects = SpriteEffects.None;
args.SpriteBatch.Draw(texture, Position, null, DrawColor, 0, new Vector2(0, 0), 1, spriteEffects, 1);
base.Draw(args);
}
protected override void TryMove(SpriteUpdateContext context)
{
if (XPosition + BoundBox.Width >= context.ViewTransform.ScreenWidth)
{
XPosition = context.ViewTransform.ScreenWidth - BoundBox.Width;
XVelocity *= -1;
}
else if (XPosition <= 0)
{
XPosition = 0;
XVelocity *= -1;
}
}
protected override void TryFire(SpriteUpdateContext context)
{
if (CurrentFireThreshold > 0)
{
CurrentFireThreshold--;
}
if (CurrentFireThreshold == 0 && context.Random.Next(0, 30) == 1)
{
float originX = XPosition + (BoundBox.Width / 2) - (7 / 2);
//context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
//context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, -1, 3 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 3, YPosition + BoundBox.Height - 12, 0, 3 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 1, 3 + YVelocity, this));
CurrentFireThreshold = FireThreshold;
context.AudioManager.PlayEnemyFire();
}
}
}

63
AlientAttack.MonoGame/Things/Enemies/EnemyShip.cs
View File

@@ -1,6 +1,67 @@
namespace AlienAttack.MonoGame.Things.Enemies;
using AlienAttack.MonoGame.Things.Bullets;
namespace AlienAttack.MonoGame.Things.Enemies;
public abstract class EnemyShip(int x, int y) : MoveableSprite(x, y)
{
protected abstract int Health { get; set; }
public virtual int CrashDamage => 10;
public override sealed void Update(SpriteUpdateContext context)
{
if (Health <= 0)
{
IsDead = true;
SpawnExplosion(context);
OnKilled(context);
return;
}
base.Update(context);
TryMove(context);
if (YPosition > context.ViewTransform.ScreenHeight)
{
IsDead = true;
return;
}
TryFire(context);
}
protected virtual void TryMove(SpriteUpdateContext context)
{
}
protected virtual void TryFire(SpriteUpdateContext context)
{
}
public override void OnCollision(SpriteCollisionContext context)
{
if (context.Sprite is Bullet bullet && bullet.Owner is Player)
{
Health -= bullet.Damage;
}
if (context.Sprite is Player)
{
Health = 0;
}
}
private void SpawnExplosion(SpriteUpdateContext context)
{
context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
context.AudioManager.PlayExplosion();
}
protected virtual void OnKilled(SpriteUpdateContext context)
{
}
}

95
AlientAttack.MonoGame/Things/Enemies/GreenEnemy.cs
View File

@@ -14,7 +14,7 @@ public class GreenEnemy : EnemyShip
protected ICollection<IWeapon> ActiveWeapons = [];
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected int Health { get; set; } = 5;
protected override int Health { get; set; } = 5;
public GreenEnemy(int x, int y) : base(x, y)
{
@@ -34,43 +34,8 @@ public class GreenEnemy : EnemyShip
base.Draw(args);
}
public override void Update(SpriteUpdateContext context)
protected override void TryFire(SpriteUpdateContext context)
{
//YPosition += 1;
if (Health <= 0)
{
IsDead = true;
SpawnExplosion(context);
switch (context.Random.Next(0, 5))
{
case 0:
context.SpawnSprite(new Health((int)XPosition, (int)YPosition));
break;
case 1:
context.SpawnSprite(new Shields((int)XPosition, (int)YPosition));
break;
case 2:
context.SpawnSprite(new Ammo((int)XPosition, (int)YPosition));
break;
case 3:
context.SpawnSprite(new Energy((int)XPosition, (int)YPosition));
break;
case 4:
context.SpawnSprite(new Rockets((int)XPosition, (int)YPosition));
break;
}
return;
}
if (YPosition > context.ViewTransform.ScreenHeight)
{
IsDead = true;
return;
}
if (CurrentFireThreshold > 0)
{
CurrentFireThreshold--;
@@ -87,48 +52,30 @@ public class GreenEnemy : EnemyShip
context.AudioManager.PlayEnemyFire();
}
//CheckMove(context);
CheckFire(context);
base.Update(context);
}
private void SpawnExplosion(SpriteUpdateContext context)
protected override void OnKilled(SpriteUpdateContext context)
{
context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
int itemXPosition = (int)XPosition + 32 - Item.Width / 2;
int itemYPosition = (int)YPosition + 32 - Item.Height / 2;
//int number = context.Random.Next(1, 7);
//SoundEffect soundEffect = context.Content.Load<SoundEffect>(@$"Sfx\Explosions\EXPLDsgn_Explosion Impact_0{number}_SFRMS_SCIWPNS");
//soundEffect.Play(0.95f, (float)(context.Random.NextDouble() * 0.1 - 0.05), 0);
context.AudioManager.PlayExplosion();
}
private void CheckFire(SpriteUpdateContext context)
{
//foreach (IWeapon weapon in ActiveWeapons)
//{
// weapon.UpdateFireThreshold();
//}
//foreach (IWeapon weapon in ActiveWeapons)
//{
// weapon.TryFire(this, context);
//}
}
public override void OnCollision(SpriteCollisionContext context)
{
if (context.Sprite is Bullet bullet && bullet.Owner is Player)
switch (context.Random.Next(0, 5))
{
Health -= bullet.Damage;
}
if (context.Sprite is Player)
{
Health = 0;
case 0:
context.SpawnSprite(new Health(itemXPosition, itemYPosition));
break;
case 1:
context.SpawnSprite(new Shields(itemXPosition, itemYPosition));
break;
case 2:
context.SpawnSprite(new Ammo(itemXPosition, itemYPosition));
break;
case 3:
context.SpawnSprite(new Energy(itemXPosition, itemYPosition));
break;
case 4:
context.SpawnSprite(new Rockets(itemXPosition, itemYPosition));
break;
}
}
}

48
AlientAttack.MonoGame/Things/Enemies/RedEnemy.cs
View File

@@ -8,7 +8,7 @@ public class RedEnemy : EnemyShip
{
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected int Health { get; set; } = 5;
protected override int Health { get; set; } = 5;
public RedEnemy(int x, int y) : base(x, y)
{
@@ -28,7 +28,7 @@ public class RedEnemy : EnemyShip
base.Draw(args);
}
public override void Update(SpriteUpdateContext context)
protected override void TryMove(SpriteUpdateContext context)
{
//YPosition += 2;
//if (YPosition > context.ViewTransform.ScreenHeight / 5 - BoundBox.Y / 2)
@@ -49,38 +49,9 @@ public class RedEnemy : EnemyShip
// XVelocity = 0;
// }
//}
if (Health <= 0)
{
IsDead = true;
SpawnExplosion(context);
return;
}
if (YPosition > context.ViewTransform.ScreenHeight)
{
IsDead = true;
return;
}
TryFire(context);
base.Update(context);
}
private void SpawnExplosion(SpriteUpdateContext context)
{
context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
//int number = context.Random.Next(1, 7);
//SoundEffect soundEffect = context.Content.Load<SoundEffect>(@$"Sfx\Explosions\EXPLDsgn_Explosion Impact_0{number}_SFRMS_SCIWPNS");
//soundEffect.Play(0.95f, (float)(context.Random.NextDouble() * 0.1 - 0.05), 0);
context.AudioManager.PlayExplosion();
}
private void TryFire(SpriteUpdateContext context)
protected override void TryFire(SpriteUpdateContext context)
{
if (CurrentFireThreshold > 0)
{
@@ -100,17 +71,4 @@ public class RedEnemy : EnemyShip
context.AudioManager.PlayEnemyFire();
}
}
public override void OnCollision(SpriteCollisionContext context)
{
if (context.Sprite is Bullet bullet && bullet.Owner is Player)
{
Health -= bullet.Damage;
}
if (context.Sprite is Player)
{
Health = 0;
}
}
}

57
AlientAttack.MonoGame/Things/Enemies/TealEnemy.cs
View File

@@ -8,7 +8,7 @@ public class TealEnemy : EnemyShip
{
protected int FireThreshold => 20;
protected int CurrentFireThreshold { get; set; } = 20;
protected int Health { get; set; } = 5;
protected override int Health { get; set; } = 5;
public TealEnemy(int x, int y) : base(x, y)
{
@@ -29,7 +29,7 @@ public class TealEnemy : EnemyShip
base.Draw(args);
}
public override void Update(SpriteUpdateContext context)
protected override void TryMove(SpriteUpdateContext context)
{
if (XPosition + BoundBox.Width >= context.ViewTransform.ScreenWidth)
{
@@ -41,39 +41,9 @@ public class TealEnemy : EnemyShip
XPosition = 0;
XVelocity *= -1;
}
if (Health <= 0)
{
IsDead = true;
SpawnExplosion(context);
return;
}
if (YPosition > context.ViewTransform.ScreenHeight)
{
IsDead = true;
return;
}
//CheckMove(context);
TryFire(context);
base.Update(context);
}
private void SpawnExplosion(SpriteUpdateContext context)
{
context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
//int number = context.Random.Next(1, 7);
//SoundEffect soundEffect = context.Content.Load<SoundEffect>(@$"Sfx\Explosions\EXPLDsgn_Explosion Impact_0{number}_SFRMS_SCIWPNS");
//soundEffect.Play(0.95f, (float)(context.Random.NextDouble() * 0.1 - 0.05), 0);
context.AudioManager.PlayExplosion();
}
private void TryFire(SpriteUpdateContext context)
protected override void TryFire(SpriteUpdateContext context)
{
if (CurrentFireThreshold > 0)
{
@@ -84,25 +54,16 @@ public class TealEnemy : EnemyShip
{
float originX = XPosition + (BoundBox.Width / 2) - (7 / 2);
context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
//context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
//context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX - 9, YPosition + BoundBox.Height - 12, -1, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 3, YPosition + BoundBox.Height - 12, 0, 2 + YVelocity, this));
context.SpawnSprite(new MinigunBulletSmall(originX + 14, YPosition + BoundBox.Height - 12, 1, 2 + YVelocity, this));
CurrentFireThreshold = FireThreshold;
context.AudioManager.PlayEnemyFire();
}
}
public override void OnCollision(SpriteCollisionContext context)
{
if (context.Sprite is Bullet bullet && bullet.Owner is Player)
{
Health -= bullet.Damage;
}
if (context.Sprite is Player)
{
Health = 0;
}
}
}

5
AlientAttack.MonoGame/Things/Items/Item.cs
View File

@@ -14,12 +14,15 @@ public abstract class Item : MoveableSprite
protected string TextureName;
public const int Width = 48;
public const int Height = 29;
protected abstract PickupKind Kind { get; }
public Item(int x, int y) : base(x, y)
{
YVelocity = .5f;
BoundBox = new Rectangle(0, 0, 48, 29);
BoundBox = new Rectangle(0, 0, Width, Height);
_anchor = new Vector2(x, y);
}