great balls of fire

2026-07-26 00:45:20 +00:00 · 2018-07-27 22:27:27 +10:00
parent 21af326248
commit af773807d8
11 changed files with 187 additions and 17 deletions
@@ -0,0 +1,79 @@
+using JamGame.Components;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+using MonoGame.Extended;
+using MonoGame.Extended.Entities;
+using MonoGame.Extended.Entities.Systems;
+using MonoGame.Extended.Sprites;
+
+namespace JamGame.Systems
+{
+    public class PlayerControlSystem : EntityUpdateSystem
+    {
+        private readonly MainGame _mainGame;
+        private readonly EntityFactory _entityFactory;
+        private ComponentMapper<Transform2> _transformMapper;
+        private ComponentMapper<Sprite> _spriteMapper;
+        private const int _playerSpeed = 64;
+        private KeyboardState _previousKeyboardState;
+
+        private Entity _spawningFireball;
+
+        public PlayerControlSystem(MainGame mainGame, EntityFactory entityFactory) 
+            : base(Aspect.All(typeof(Player), typeof(Transform2), typeof(Sprite)))
+        {
+            _mainGame = mainGame;
+            _entityFactory = entityFactory;
+        }
+
+        public override void Initialize(IComponentMapperService mapperService)
+        {
+            _transformMapper = mapperService.GetMapper<Transform2>();
+            _spriteMapper = mapperService.GetMapper<Sprite>();
+        }
+        
+        public override void Update(GameTime gameTime)
+        {
+            var elapsedSeconds = gameTime.GetElapsedSeconds();
+
+            foreach (var entity in ActiveEntities)
+            {
+                var transform = _transformMapper.Get(entity);
+                var sprite = _spriteMapper.Get(entity);
+
+                if (_mainGame.KeyboardState.IsKeyDown(Keys.Left))
+                {
+                    transform.Position += new Vector2(-_playerSpeed, 0) * elapsedSeconds;
+                    sprite.Effect = SpriteEffects.FlipHorizontally;
+                }
+
+                if (_mainGame.KeyboardState.IsKeyDown(Keys.Right))
+                {
+                    transform.Position += new Vector2(_playerSpeed, 0) * elapsedSeconds;
+                    sprite.Effect = SpriteEffects.None;
+                }
+
+                if (_mainGame.KeyboardState.IsKeyDown(Keys.Up))
+                    transform.Position += new Vector2(0, -_playerSpeed) * elapsedSeconds;
+
+                if (_mainGame.KeyboardState.IsKeyDown(Keys.Down))
+                    transform.Position += new Vector2(0, _playerSpeed) * elapsedSeconds;
+
+                if (_previousKeyboardState.IsKeyUp(Keys.Space) && _mainGame.KeyboardState.IsKeyDown(Keys.Space))
+                    _spawningFireball = _entityFactory.SpawnFireball(transform.Position.X + 16, transform.Position.Y);
+
+                if (_spawningFireball != null && _previousKeyboardState.IsKeyDown(Keys.Space) && _mainGame.KeyboardState.IsKeyUp(Keys.Space))
+                {
+                    _spawningFireball.Get<Body>().Velocity = new Vector2(100, 0);
+                    _spawningFireball = null;
+                }
+
+                if(_spawningFireball != null)
+                    _spawningFireball.Get<Transform2>().Position = new Vector2(transform.Position.X + 16, transform.Position.Y);
+            }
+
+            _previousKeyboardState = _mainGame.KeyboardState;
+        }
+    }
+}