Ir proximity in simulator (#299)

* support for IR proximity

* fixing build issue

* missing break

* remove auto-start of sensor

* setting mode on onEvent

* flooring slider value

* bump up proximity

* fixing threshold blocks

sim/state/infrared.ts

@@ -0,0 +1,35 @@
+/// <reference path="./sensor.ts"/>
+
+namespace pxsim {
+    export enum InfraredSensorMode {
+        None = -1,
+        Proximity = 0,
+        Seek = 1,
+        RemoteControl = 2
+    }
+
+    export class InfraredSensorNode extends UartSensorNode {
+        id = NodeType.InfraredSensor;
+
+        private proximity: number = 50; // [0..100]
+
+        constructor(port: number) {
+            super(port);
+        }
+
+        getDeviceType() {
+            return DAL.DEVICE_TYPE_IR;
+        }
+
+        setPromixity(proximity: number) {
+            if (this.proximity != proximity) {
+                this.proximity = proximity;
+                this.setChangedState();
+            }
+        }
+
+        getValue() {
+            return this.proximity;
+        }
+    }
+}

sim/state/nodeTypes.ts

@@ -7,7 +7,8 @@ namespace pxsim {
         LargeMotor = 4,
         GyroSensor = 5,
         ColorSensor = 6,
-        UltrasonicSensor = 7
+        UltrasonicSensor = 7,
+        InfraredSensor = 8
     }
 
     export interface Node {