v0.1

Subsurface/Source/Items/Components/Signal/AndComponent.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Xml.Linq;
+
+namespace Subsurface.Items.Components
+{
+    class AndComponent : ItemComponent
+    {
+        protected string output;
+
+        //an array to keep track of how long ago a non-zero signal was received on both inputs
+        protected float[] timeSinceReceived;
+
+        //the output is sent if both inputs have received a signal within the timeframe
+        protected float timeFrame;
+        
+        [InGameEditable, HasDefaultValue(0.1f, true)]
+        public float TimeFrame
+        {
+            get { return timeFrame; }
+            set
+            {
+                timeFrame = Math.Max(0.0f, value);
+            }
+        }
+
+        [InGameEditable, HasDefaultValue("1", true)]
+        public string Output
+        {
+            get { return output; }
+            set { output = value; }
+        }
+
+        public AndComponent(Item item, XElement element)
+            : base (item, element)
+        {
+            timeSinceReceived = new float[] { timeFrame*2.0f, timeFrame*2.0f};
+
+            //output = "1";
+        }
+
+        public override void Update(float deltaTime, Camera cam)
+        {
+            bool sendOutput = true;
+            for (int i = 0; i<timeSinceReceived.Length; i++)
+            {                
+                if (timeSinceReceived[i] > timeFrame) sendOutput = false;
+                timeSinceReceived[i] += deltaTime;
+            }
+
+            if (sendOutput)
+            {
+                item.SendSignal(output, "signal_out");
+            }
+        }
+
+        public override void ReceiveSignal(string signal, Connection connection, Item sender, float power=0.0f)
+        {
+            switch (connection.Name)
+            {
+                case "signal_in1":
+                    if (signal == "0") return;
+                    timeSinceReceived[0] = 0.0f;
+                    isActive = true;
+                    break;
+                case "signal_in2":
+                    if (signal == "0") return;
+                    timeSinceReceived[1] = 0.0f;
+                    isActive = true;
+                    break;
+                case "set_output":
+                    output = signal;
+                    break;
+            }
+        }
+    }
+}