diff --git a/demo3.cpp b/demo3.cpp
index 1191be2..fa57895 100644
--- a/demo3.cpp
+++ b/demo3.cpp
@@ -26,10 +26,192 @@ char ceilingColor = 0;
 
 #define HEIGHT_PROFILE_LENGTH 256
 const int8_t heightProfile[] = {
-9,9,9,10,10,10,11,11,12,13,13,14,14,14,15,15,15,16,16,16,16,16,15,15,15,14,14,13,13,12,11,10,10,9,9,9,8,8,8,8,8,8,7,7,7,6,5,4,4,3,3,3,3,3,3,4,5,7,8,10,11,12,12,13,13,13,14,16,19,20,21,21,22,22,22,23,23,23,23,22
-,22,21,20,19,18,18,17,17,17,17,16,16,16,16,16,16,16,15,15,15,14,14,13,12,11,10,8,7,6,5,5,5,4,4,4,4,4,5,5,5,6,6,7,7,7,8,8,8,8,8,8,8,7,7,7,7,6,6,5,4,4,3,2,2,2,1,1,1,1,2,3,5,6,7,9,13,13,13,18,18
-,22,22,22,22,22,22,21,21,20,20,19,16,16,16,14,14,14,15,15,15,15,15,16,17,17,18,18,18,16,16,16,16,15,15,15,14,14,13,12,8,7,7,7,8,9,11,12,12,13,13,13,12,11,10,10,10,10,11,11,12,13,13,12,12,11,11,10,10,9,9,9,9,9,9,10,10,11,12,13,13
-,14,14,14,14,14,13,13,12,11,11,11,11,10,10,10,10};
+9,9,9,10,10,10,11,11,12,13,13,14,14,14,15,15,15,16,16,16,16,16,15,15,15,14,14,
+13,13,12,11,10,10,9,9,9,8,8,8,8,8,8,7,7,7,6,5,4,4,3,3,3,3,3,3,4,5,7,8,10,11,12,
+12,13,13,13,14,16,19,20,21,21,22,22,22,23,23,23,23,22,22,21,20,19,18,18,17,17,
+17,17,16,16,16,16,16,16,16,15,15,15,14,14,13,12,11,10,8,7,6,5,5,5,4,4,4,4,4,5,
+5,5,6,6,7,7,7,8,8,8,8,8,8,8,7,7,7,7,6,6,5,4,4,3,2,2,2,1,1,1,1,2,3,5,6,7,9,13,
+13,13,18,18,22,22,22,22,22,22,21,21,20,20,19,16,16,16,14,14,14,15,15,15,15,15,
+16,17,17,18,18,18,16,16,16,16,15,15,15,14,14,13,12,8,7,7,7,8,9,11,12,12,13,13,
+13,12,11,10,10,10,10,11,11,12,13,13,12,12,11,11,10,10,9,9,9,9,9,9,10,10,11,12,
+13,13,14,14,14,14,14,13,13,12,11,11,11,11,10,10,10,10};
+
+const unsigned char imageBackground[] =
+{  55, 44 // width, height
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xff,0xff
+  ,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2
+  ,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff
+  ,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xff
+  ,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xff,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2
+  ,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xff,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xff,0xff,0xff
+  ,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xd2,0xff,0xff
+  ,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff
+  ,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xff
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xff,0xff,0xff,0xd2,0xff,0xff,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xff,0xff,0xd2,0xff,0xff,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xff,0xff,0xd2,0xff,0xff
+  ,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xff,0xff,0xd2
+  ,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xff
+  ,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xff,0xd2,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xff,0xd2,0xff,0xff,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xff,0xd2,0xff,0xff,0xd2,0xff,0xff,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xff,0xd2,0xff,0xff,0xd2,0xff,0xff,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xff,0xd2,0xd2,0xd2
+  ,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff,0xd2,0xd2
+  ,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xff
+  ,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff
+  ,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xff,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0x3b,0x3b,0x3b
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2
+  ,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xd2,0xff,0xff,0xd2,0xd2,0xd2,0xd2
+  ,0xd2,0xd2,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x3b,0x14,0x14,0x14
+  ,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14,0x14
+};
 
 Unit floorHeightAt(int16_t x, int16_t y)
 {
@@ -38,6 +220,9 @@ Unit floorHeightAt(int16_t x, int16_t y)
          UNITS_PER_SQUARE;
 }
 
+uint16_t previousColumn = 255;
+uint16_t backgroundColumn = 0;
+
 /**
   Function for drawing a single pixel (like fragment shader).
 */
@@ -45,19 +230,33 @@ inline void pixelFunc(PixelInfo pixel)
 {
   uint8_t c;
 
-  int16_t intensity = pixel.depth / (UNITS_PER_SQUARE * 5);
+  int16_t intensity = 0;
 
   if (pixel.isWall)
   {
     c = 50;
-    intensity += (pixel.hit.direction % 2 == 0 ? 2 : 0);
+    intensity = pixel.hit.direction % 2 == 0 ? 2 : 0;
+  }
+  else if (pixel.isFloor && !pixel.isHorizon)
+  {
+    c = floorColor;
+    intensity = pixel.depth / (UNITS_PER_SQUARE * 3);
   }
   else
-    c = pixel.isFloor && pixel.depth < UNITS_PER_SQUARE * 16 ?
-      floorColor : ceilingColor;
+  {
+    if (previousColumn == pixel.position.x)
+    {
+      c = imageBackground[2 + backgroundColumn * 44 + pixel.position.y / 2];
+    }
+    else
+    {
+      backgroundColumn = absVal(pixel.position.x / 2 + (110 * player.mCamera.direction) / UNITS_PER_SQUARE) % 55;
+      previousColumn = pixel.position.x;
+    }
+  }
 
-  if (c != ceilingColor)
-    c = addRGB(c,intensity / 2,intensity / 2,intensity / 2);
+  if (intensity != 0)
+    c = addIntensity(c,intensity);
 
   uint8_t *buf = pokitto.display.screenbuffer;
 
@@ -75,8 +274,8 @@ void draw()
   RayConstraints c;
 
   c.maxHits = 6;
-  c.maxSteps = 15;
-  c.computeTextureCoords = 1;
+  c.maxSteps = 12;
+  c.computeTextureCoords = 0;
 
   render(player.mCamera,floorHeightAt,0,0,pixelFunc,c);
 /*