more missing simulator functions

sim/libmbit.ts

@@ -564,6 +564,34 @@ namespace pxsim.ImageMethods {
         runtime.queueDisplayUpdate()
     }
 
+    export function height(leds: Image) : number {
+        if (!leds) panic(PanicCode.MICROBIT_NULL_DEREFERENCE);        
+        return Image.height;
+    }
+
+    export function width(leds: Image) : number {
+        if (!leds) panic(PanicCode.MICROBIT_NULL_DEREFERENCE);        
+        return leds.width;
+    }
+    
+    export function plotFrame(leds: Image, frame: number) {
+        ImageMethods.plotImage(leds, frame * Image.height);
+    }
+
+    export function showFrame(leds: Image, frame: number) {
+        ImageMethods.showImage(leds, frame * Image.height);
+    }
+    
+    export function pixel(leds: Image, x: number, y: number) : number {
+        if (!leds) panic(PanicCode.MICROBIT_NULL_DEREFERENCE);        
+        return leds.get(x,y);
+    }
+    
+    export function setPixel(leds: Image, x: number, y: number, v:number) {
+        if (!leds) panic(PanicCode.MICROBIT_NULL_DEREFERENCE);        
+        leds.set(x,y,v);        
+    }
+
     export function clear(leds: Image) {
         if (!leds) panic(PanicCode.MICROBIT_NULL_DEREFERENCE);        
         

sim/state.ts

@@ -611,6 +611,7 @@ namespace pxsim {
     }
 
     export class Image {
+        public static height: number = 5;
         public width: number;
         public data: number[];
         constructor(width: number, data: number[]) {