VirtualComputer/src/sznp/virtualcomputer/PXCLib.java

@@ -1,5 +1,6 @@
 package sznp.virtualcomputer;
 
+@SuppressWarnings("unused")
 public interface PXCLib {
 	/**
 	 * Testing only
@@ -14,13 +15,14 @@ public interface PXCLib {
 	 * @param address Bitmap address from VirtualBox
 	 * @param w Width of the screen
 	 * @param h Height of the screen
-	 * @param mc Total count of maps used for the screen
+	 * @param mcx Width of the screen in maps
+	 * @param mcy Height of the screen in maps
 	 */
 	void setSource(long address, int w, int h, int mcx, int mcy);
 
 	/**
-	 * Updates map and returns it's content
-	 * @return Full map data [mapc][data]
+	 * Updates map and returns it's content, where affected
+	 * @return Partial map data [mapc][data]
 	 */
 	byte[][] updateAndGetMap(int x, int y, int width, int height); //TODO: Only update parts that actually updated and return them per-map (flagDirty)
 }

libpxc/pxc.c

@@ -25,14 +25,12 @@ typedef struct { //BGRA
 	int alpha : 8;
 } NativeColor; //Used for the screen data
 
-char matchColor(NativeColor* p);
+char matchColor(NativeColor nc);
 
 void* image=NULL;
 void* maps=NULL; //Per map data (1st map, second map etc.)
 
 short width, height, mapcx, mapcy;
-char* mapp=NULL; //Pointer inside the map
-NativeColor* imgp=NULL; //Pointer inside the image
 
 void setSource(addr address, short w, short h, short mcx, short mcy) {
 	ct_assert(sizeof(char)==1); //Compile-time assert
@@ -40,28 +38,33 @@ void setSource(addr address, short w, short h, short mcx, short mcy) {
 	image=(void*)address;
 	maps=malloc(MAPSIZE*MAPSIZE*mcx*mcy); //1 byte per pixel
 	width=w, height=h, mapcx=mcx, mapcy=mcy;
-	mapp=maps;
 }
 
 //May return 0
 void* updateAndGetMap(int x, int y, int w, int h) { //TODO: Support the parameters
 	if(image==NULL || maps==NULL) return 0;
-	void* const retp = mapp;
-	for(short i=0; i<MAPSIZE; i++) { //We need to jump
-		for(short j=0; j<MAPSIZE; j++) {
-			*mapp=matchColor(imgp);
-			imgp++; //Increment by the size of Nativecolor so 4
-			mapp++;
+	char* mapp = maps;
+	NativeColor* imgp = image;
+	for(int k=0; k<mapcx; k++) {
+		for(int l=0; l<mapcy; l++) {
+			mapp = maps + MAPSIZE*k + MAPSIZE*mapcx*MAPSIZE*l; //Go to the start of the map
+			for(short i=0; i<MAPSIZE; i++) { //We need to jump
+				for(short j=0; j<MAPSIZE; j++) {
+					*mapp=matchColor(*imgp);
+					imgp++; //Increment by the size of NativeColor so 4
+					mapp++;
+				}
+				imgp+=width-MAPSIZE; //Go back to the first column
+			}
+			imgp+=MAPSIZE; //Go to the next map, kind of - TODO: Use X and Y coords!
+			if((void*)mapp - maps     >    MAPSIZE * MAPSIZE * mapcx * mapcy ||
+			   (void*)imgp - image    >    width   * height  * sizeof(NativeColor)) {
+				mapp = maps;  //Start over
+				imgp = image; //Start over
+			}
 		}
-		imgp+=width-MAPSIZE; //Go back to the first column
 	}
-	imgp+=MAPSIZE; //Go to the next map, kind of - TODO: Use X and Y coords!
-	if((void*)mapp - maps     >    MAPSIZE * MAPSIZE * mapcx * mapcy ||
-	   (void*)imgp - image    >    width   * height  * sizeof(NativeColor)) {
-		mapp = maps;  //Start over
-		imgp = image; //Start over
-	} //TODO: This is only one map, do it for all of them
-	return retp;
+	return maps; //TODO: Return changed only
 }
 
 const Color colors[] = {
@@ -133,9 +136,9 @@ double getDistance(Color c1, Color c2) {
 }
 
 //Code from Bukkit's MapPalette class
-char matchColor(NativeColor* const p) {
-	if (p->alpha < 128) return 0;
-	Color color={.red=p->red, .green=p->green, .blue=p->blue};
+char matchColor(NativeColor nc) {
+	if (nc.alpha < 128) return 0;
+	Color color={.red=nc.red, .green=nc.green, .blue=nc.blue};
 
 	char index = 0;
 	double best = -1;