celesteia archive, last updated april 9th 2024

Signed-off-by: hazel <hazel@hazelthats.me>

1 files changed, 37 insertions, 0 deletions

diff --git a/source/game/systems/TargetPositionSystem.cs b/source/game/systems/TargetPositionSystem.cs
new file mode 100644
index 0000000..7089bc1
--- /dev/null
+++ b/source/game/systems/TargetPositionSystem.cs
@@ -0,0 +1,37 @@
+using Celesteia.Game.Components;
+using Celesteia.Game.Planets;
+using Microsoft.Xna.Framework;
+using MonoGame.Extended;
+using MonoGame.Extended.Entities;
+using MonoGame.Extended.Entities.Systems;
+
+namespace Celesteia.Game.Systems {
+    public class TargetPositionSystem : EntityUpdateSystem {
+        private ChunkMap _chunkMap;
+        
+        private ComponentMapper<Transform2> transformMapper;
+        private ComponentMapper<TargetPosition> targetPositionMapper;
+
+        public TargetPositionSystem(ChunkMap chunkMap) : base(Aspect.All(typeof(Transform2), typeof(TargetPosition)))
+        => _chunkMap = chunkMap;
+
+        public override void Initialize(IComponentMapperService mapperService)
+        {
+            transformMapper = mapperService.GetMapper<Transform2>();
+            targetPositionMapper = mapperService.GetMapper<TargetPosition>();
+        }
+
+        public override void Update(GameTime gameTime)
+        {
+            foreach (int entityId in ActiveEntities) {
+                TargetPosition targetPosition = targetPositionMapper.Get(entityId);
+                Transform2 transform = transformMapper.Get(entityId);
+
+                if (targetPosition.Target.X < 0 || targetPosition.Target.X > _chunkMap.BlockWidth)
+                    targetPosition.Target.X = MathHelper.Clamp(targetPosition.Target.X, 0f, _chunkMap.BlockWidth);
+                
+                transform.Position = targetPosition.Target;
+            }
+        }
+    }
+}
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