Simulator refactoring to support better resizing of modules and controls

sim/state/color.ts

@@ -20,7 +20,7 @@ namespace pxsim {
     export class ColorSensorNode extends UartSensorNode {
         id = NodeType.ColorSensor;
 
-        private color: number;
+        private color: number = 50;
 
         constructor(port: number) {
             super(port);
@@ -31,10 +31,8 @@ namespace pxsim {
         }
 
         setColor(color: number) {
-            if (this.color != color) {
-                this.color = color;
-                this.setChangedState();
-            }
+            this.color = color;
+            this.setChangedState();
         }
 
         getValue() {

sim/state/motors.ts

@@ -48,6 +48,7 @@ namespace pxsim {
 
         stop() {
             // TODO: implement
+            this.setSpeed(0);
         }
 
         start() {

sim/state/uart.ts

@@ -88,7 +88,7 @@ namespace pxsim {
                     const inputNodes = ev3board().getInputNodes();
                     for (let port = 0; port < DAL.NUM_INPUTS; port++) {
                         const node = inputNodes[port];
-                        if (node) {
+                        if (node && node.isUart()) {
                             // Actual
                             const index = 0; //UartOff.Actual + port * 2;
                             util.map16Bit(data, UartOff.Raw + DAL.MAX_DEVICE_DATALENGTH * 300 * port + DAL.MAX_DEVICE_DATALENGTH * index, Math.floor(node.getValue()))