3 files changed, 22 insertions, 1 deletions
diff --git a/engines/parallaction/graphics.cpp b/engines/parallaction/graphics.cpp
index bd4e094156..a60f272ca8 100644
--- a/engines/parallaction/graphics.cpp
+++ b/engines/parallaction/graphics.cpp
@@ -334,6 +334,21 @@ void Gfx::floodFill(Gfx::Buffers buffer, const Common::Rect& r, byte color) {
 	return;
 }
 
+void Gfx::invertRect(Gfx::Buffers buffer, const Common::Rect& r) {
+
+	byte *d = (byte*)_buffers[buffer]->getBasePtr(r.left, r.top);
+
+	for (int i = 0; i < r.height(); i++) {
+		for (int j = 0; j < r.width(); j++) {
+			*d ^= 0x1F;
+			d++;
+		}
+
+		d += (_buffers[buffer]->pitch - r.width());
+	}
+
+}
+
 void Gfx::screenClip(Common::Rect& r, Common::Point& p) {
 
 	int32 x = r.left;
diff --git a/engines/parallaction/graphics.h b/engines/parallaction/graphics.h
index 9f1101efa2..8a0779144a 100644
--- a/engines/parallaction/graphics.h
+++ b/engines/parallaction/graphics.h
@@ -238,6 +238,7 @@ public:
 	void copyRect(Gfx::Buffers dstbuffer, const Common::Rect& r, byte *src, uint16 pitch);
 	void grabRect(byte *dst, const Common::Rect& r, Gfx::Buffers srcbuffer, uint16 pitch);
 	void floodFill(Gfx::Buffers buffer, const Common::Rect& r, byte color);
+	void invertRect(Gfx::Buffers buffer, const Common::Rect& r);
 
 	// palette
 	void setPalette(Palette palette);
diff --git a/engines/parallaction/gui_ns.cpp b/engines/parallaction/gui_ns.cpp
index 21c1f87787..3909761501 100644
--- a/engines/parallaction/gui_ns.cpp
+++ b/engines/parallaction/gui_ns.cpp
@@ -350,8 +350,13 @@ int Parallaction_ns::guiGetSelectedBlock(const Common::Point &p) {
 		}
 	}
 
-	if (selection != -1) {
+	if ((selection != -1) && (getPlatform() == Common::kPlatformAmiga)) {
+		_gfx->invertRect(Gfx::kBitFront, codeTrueBlocks[selection]);
+		_gfx->updateScreen();
 		beep();
+		g_system->delayMillis(100);
+		_gfx->invertRect(Gfx::kBitFront, codeTrueBlocks[selection]);
+		_gfx->updateScreen();
 	}
 
 	return selection;