Add traveller main file and stubs for required headers

19 files changed, 1134 insertions, 14 deletions

diff --git a/apps/graphics/Kconfig b/apps/graphics/Kconfig
index a10650e27..55002bcc1 100644
--- a/apps/graphics/Kconfig
+++ b/apps/graphics/Kconfig
@@ -15,4 +15,20 @@ menu "TIFF Screenshot Utility"
 source "$APPSDIR/graphics/screenshot/Kconfig"
 endmenu
 
-endif
+endif # TIFF
+
+config GRAPHICS_TRAVELER
+	bool "Traveller game"
+	default n
+	select SYSTEM_INIFILE
+	---help---
+		Enable or disable the graphic Traveller game
+
+if GRAPHICS_TRAVELER
+
+menu "Traveller game"
+source "$APPSDIR/graphics/traveller/Kconfig"
+endmenu
+
+endif # GRAPHICS_TRAVELER
+
diff --git a/apps/graphics/Make.defs b/apps/graphics/Make.defs
index 8f940cbad..3376e941a 100644
--- a/apps/graphics/Make.defs
+++ b/apps/graphics/Make.defs
@@ -41,3 +41,7 @@ endif
 ifeq ($(CONFIG_GRAPHICS_SCREENSHOT),y)
 CONFIGURED_APPS += graphics/screenshot
 endif
+
+ifeq ($(CONFIG_GRAPHICS_TRAVELER),y)
+CONFIGURED_APPS += graphics/traveller
+endif
diff --git a/apps/graphics/Makefile b/apps/graphics/Makefile
index 7503c4343..551e21472 100644
--- a/apps/graphics/Makefile
+++ b/apps/graphics/Makefile
@@ -37,7 +37,7 @@
 
 # Sub-directories
 
-SUBDIRS = tiff screenshot
+SUBDIRS = tiff screenshot traveller
 
 # Sub-directories that might need context setup
 
diff --git a/apps/graphics/traveller/.gitignore b/apps/graphics/traveller/.gitignore
new file mode 100644
index 000000000..83bd7b811
--- /dev/null
+++ b/apps/graphics/traveller/.gitignore
@@ -0,0 +1,11 @@
+/Make.dep
+/.depend
+/.built
+/*.asm
+/*.rel
+/*.lst
+/*.sym
+/*.adb
+/*.lib
+/*.src
+/*.obj
diff --git a/apps/graphics/traveller/Kconfig b/apps/graphics/traveller/Kconfig
index 0906ebab9..3feee99bb 100644
--- a/apps/graphics/traveller/Kconfig
+++ b/apps/graphics/traveller/Kconfig
@@ -3,15 +3,14 @@
 # see misc/tools/kconfig-language.txt.
 #
 
-config GRAPHICS_TRAVELER
-	bool "Traveller game"
-	default n
-	select SYSTEM_INIFILE
-	---help---
-		Enable or disable the graphic Traveller game
-
 if GRAPHICS_TRAVELER
 
+config GRAPHICS_TRAVELER_PERFMON
+	bool "Performance monitor game"
+	default y
+	---help---
+		Enable or disable performance monitoring instrumentation and output.
+
 config GRAPHICS_TRAVELER_DEBUG_LEVEL
 	int "Debug output level"
 	default 0
diff --git a/apps/graphics/traveller/Makefile b/apps/graphics/traveller/Makefile
new file mode 100644
index 000000000..7a11a7b21
--- /dev/null
+++ b/apps/graphics/traveller/Makefile
@@ -0,0 +1,142 @@
+############################################################################
+# apps/graphics/traveller/Makefile
+#
+#   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# Hello, World! built-in application info
+
+APPNAME = traveller
+PRIORITY = SCHED_PRIORITY_DEFAULT
+STACKSIZE = 2048
+
+# Hello, World! Example
+
+ASRCS =
+CSRCS =
+MAINSRC = trv_main.c
+
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+COBJS = $(CSRCS:.c=$(OBJEXT))
+MAINOBJ = $(MAINSRC:.c=$(OBJEXT))
+
+SRCS = $(ASRCS) $(CSRCS) $(MAINSRC)
+OBJS = $(AOBJS) $(COBJS)
+
+ifneq ($(CONFIG_BUILD_KERNEL),y)
+  OBJS += $(MAINOBJ)
+endif
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  BIN = ..\..\libapps$(LIBEXT)
+else
+ifeq ($(WINTOOL),y)
+  BIN = ..\\..\\libapps$(LIBEXT)
+else
+  BIN = ../../libapps$(LIBEXT)
+endif
+endif
+
+ifeq ($(WINTOOL),y)
+  INSTALL_DIR = "${shell cygpath -w $(BIN_DIR)}"
+else
+  INSTALL_DIR = $(BIN_DIR)
+endif
+
+CONFIG_EXAMPLES_HELLO_PROGNAME ?= hello$(EXEEXT)
+PROGNAME = $(CONFIG_EXAMPLES_HELLO_PROGNAME)
+
+ifeq ($(WINTOOL),y)
+INCDIROPT = -w
+endif
+
+CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(APPDIR)/graphics/traveller/include}
+
+DEPPATH = --dep-path src
+VPATH = src
+
+# Common build
+
+all: .built
+.PHONY: clean depend distclean
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(MAINOBJ): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+.built: $(OBJS)
+	$(call ARCHIVE, $(BIN), $(OBJS))
+	@touch .built
+
+ifeq ($(CONFIG_BUILD_KERNEL),y)
+$(BIN_DIR)$(DELIM)$(PROGNAME): $(OBJS) $(MAINOBJ)
+	@echo "LD: $(PROGNAME)"
+	$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(PROGNAME) $(ARCHCRT0OBJ) $(MAINOBJ) $(LDLIBS)
+	$(Q) $(NM) -u  $(INSTALL_DIR)$(DELIM)$(PROGNAME)
+
+install: $(BIN_DIR)$(DELIM)$(PROGNAME)
+
+else
+install:
+
+endif
+
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(DEPCONFIG) Makefile
+	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
+
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	$(call DELFILE, .built)
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
+
+-include Make.dep
diff --git a/apps/graphics/traveller/include/trv_bitmaps.h b/apps/graphics/traveller/include/trv_bitmaps.h
new file mode 100644
index 000000000..43e6c84ea
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_bitmaps.h
@@ -0,0 +1,57 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_bitmaps.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_BITMAPS_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_BITMAPS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_BITMAPS_H */
diff --git a/apps/graphics/traveller/include/trv_color.h b/apps/graphics/traveller/include/trv_color.h
new file mode 100644
index 000000000..3f11b4148
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_color.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_color.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_COLOR_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_COLOR_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+#include "trv_graphics.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct trv_color_rgb_s
+{
+  uint8_t red;
+  uint8_t green;
+  uint8_t blue;
+};
+
+struct trv_color_lum_s
+{
+  float red;
+  float green;
+  float blue;
+  float luminance;
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+bool trv_color_allocate(FAR struct trv_palette_s *pinfo);
+void trv_color_endmapping(void);
+trv_pixel_t trv_color_rgb2pixel(FAR struct trv_color_rgb_s *pixel);
+void trv_color_pixel2lum(trv_pixel_t pixel, FAR struct trv_color_lum_s *lum);
+trv_pixel_t trv_color_lum2pixel(FAR struct trv_color_lum_s *lum);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_COLOR_H */
diff --git a/apps/graphics/traveller/include/trv_debug.h b/apps/graphics/traveller/include/trv_debug.h
index 33632df5f..e0912f4fe 100644
--- a/apps/graphics/traveller/include/trv_debug.h
+++ b/apps/graphics/traveller/include/trv_debug.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/graphics/traveller/trv_debug.h
+ * apps/graphics/traveller/include/trv_debug.h
  *
  *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
diff --git a/apps/graphics/traveller/include/trv_doors.h b/apps/graphics/traveller/include/trv_doors.h
new file mode 100644
index 000000000..44ab7e18c
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_doors.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_doors.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_DOORS_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_DOORS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void trv_door_initialize(void);
+void trv_door_animate(void);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_DOORS_H */
diff --git a/apps/graphics/traveller/include/trv_graphics.h b/apps/graphics/traveller/include/trv_graphics.h
new file mode 100644
index 000000000..d63557b1b
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_graphics.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_graphics.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_GRAPHICS_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_GRAPHICS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct trv_palette_s
+{
+  int ncolors;                  /* Number of colors in the look-up table */
+  FAR nxgl_mxpixel_t *lut;      /* Color lookup table */
+};
+
+struct trv_graphics_info_s
+{
+  nxgl_coord_t width;           /* Image width */
+  nxgl_coord_t height;          /* Image height */
+  struct trv_palette_s palette; /* Color palette */
+  FAR nxgl_mxpixel_t *buffer;   /* Hardware framebuffer */
+};
+
+struct trv_framebuffer_s
+{
+  nxgl_coord_t width;           /* Image width */
+  nxgl_coord_t height;          /* Image height */
+  FAR trv_pixel_t *buffer;      /* Software render buffer */
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+int trv_graphics_initialize(uint16_t width, uint16_t height,
+                            uint8_t scale_factor,
+                            FAR struct trv_graphics_info_s *ginfo);
+void trv_graphics_terminate(void);
+trv_pixel_t trv_graphics_index2pixel(int index);
+void trv_display_update(struct trv_framebuffer_s *fb);
+trv_pixel_t *trv_get_renderbuffer(uint16_t width, uint16_t height);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_GRAPHICS_H */
diff --git a/apps/graphics/traveller/include/trv_input.h b/apps/graphics/traveller/include/trv_input.h
new file mode 100644
index 000000000..beeeb8179
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_input.h
@@ -0,0 +1,53 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_input.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_INPUT_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_INPUT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void trv_input_initialize(void);
+void trv_input_read(void);
+void trv_input_terminate(void);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_INPUT_H */
diff --git a/apps/graphics/traveller/include/trv_main.h b/apps/graphics/traveller/include/trv_main.h
new file mode 100644
index 000000000..9d53c3ad5
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_main.h
@@ -0,0 +1,61 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_main.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_MAIN_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_MAIN_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+extern bool g_trv_terminate;
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void trv_abort(FAR char *format, ...);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_MAIN_H */
diff --git a/apps/graphics/traveller/include/trv_pov.h b/apps/graphics/traveller/include/trv_pov.h
new file mode 100644
index 000000000..986480e11
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_pov.h
@@ -0,0 +1,61 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_pov.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_POV_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_POV_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+#include "trv_world.h"
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* This structure defines the current camera position of the player's eyes */
+
+extern struct trv_camera_s g_trv_player;
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void trv_pov_reset(void);
+void trv_pov_new(void);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_POV_H */
diff --git a/apps/graphics/traveller/include/trv_raycntl.h b/apps/graphics/traveller/include/trv_raycntl.h
new file mode 100644
index 000000000..a843cd2c8
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_raycntl.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_raycntl.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYCNTL_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYCNTL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+extern uint8_t *trv_raycaster_initialize(uint16_t screen_width,
+                                         uint16_t screen_height,
+                                         uint8_t scale_factor,
+                                         FAR uint8_t *screen_buffer);
+extern void trv_raycaster(FAR struct trv_camera_s *player);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYCNTL_H */
diff --git a/apps/graphics/traveller/include/trv_rayrend.h b/apps/graphics/traveller/include/trv_rayrend.h
new file mode 100644
index 000000000..3773a977c
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_rayrend.h
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_rayrend.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYEND_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYEND_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+#include "trv_world.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+void trv_rend_backdrop (struct trv_camera_s *camera);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_RAYEND_H */
diff --git a/apps/graphics/traveller/include/trv_types.h b/apps/graphics/traveller/include/trv_types.h
index b7371b758..83ee29dd4 100644
--- a/apps/graphics/traveller/include/trv_types.h
+++ b/apps/graphics/traveller/include/trv_types.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/graphics/traveller/trv_types.h
+ * apps/graphics/traveller/include/trv_types.h
  *
  *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -63,11 +63,10 @@
  * Public Types
  ****************************************************************************/
 
-typedef uint8_t        trv_pixel_t;
-typedef nxgl_mxpixel_t dev_pixel_t;
+typedef uint8_t trv_pixel_t;
 
 /****************************************************************************
- * Pre-processor Definitions
+ * Public Function Prototypes
  ****************************************************************************/
 
 #endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_TYPES_H */
diff --git a/apps/graphics/traveller/include/trv_world.h b/apps/graphics/traveller/include/trv_world.h
new file mode 100644
index 000000000..5e06fc9a7
--- /dev/null
+++ b/apps/graphics/traveller/include/trv_world.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+ * apps/graphics/traveller/include/trv_world.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_WORLD_H
+#define __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_WORLD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "trv_types.h"
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* The following structure contains all information necessary to define
+ * a point-of-view.
+ */
+
+struct trv_camera_s
+{
+  nxgl_coord_t x;      /* Camera X position */
+  nxgl_coord_t y;      /* Camera Y position */
+  nxgl_coord_t z;      /* Camera Z position */
+  int16_t      yaw;    /* Camera yaw orientation */
+  int16_t      pitch;  /* Camera pitch orientation */
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+int  trv_world_create(FAR const char *mapfile);
+void trv_world_destroy(void);
+
+#endif /* __APPS_GRAPHICS_TRAVELLER_INCLUDE_TRV_WORLD_H */
diff --git a/apps/graphics/traveller/src/trv_main.c b/apps/graphics/traveller/src/trv_main.c
new file mode 100755
index 000000000..6e4339f84
--- /dev/null
+++ b/apps/graphics/traveller/src/trv_main.c
@@ -0,0 +1,312 @@
+/****************************************************************************
+ * apps/graphics/traveller/trv_debug.h
+ * This file contains the main logic for the NuttX version of Traveller
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <math.h>
+
+#include "trv_types.h"
+#include "trv_bitmaps.h"
+#include "trv_world.h"
+#include "trv_doors.h"
+#include "trv_pov.h"
+#include "trv_raycntl.h"
+#include "trv_rayrend.h"
+#include "trv_input.h"
+#include "trv_graphics.h"
+#include "trv_color.h"
+#include "trv_main.h"
+
+#if CONFIG_GRAPHICS_TRAVELER_PERFMON
+#  include <sys/types.h>
+#  include <sys/time.h>
+#  include <unistd.h>
+#endif
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static void trv_exit(int exitCode);
+static void trv_usage(char *execname);
+#if CONFIG_GRAPHICS_TRAVELER_PERFMON
+static double trv_current_time(void);
+#endif
+
+/****************************************************************************
+ * Public Data
+ *************************************************************************/
+
+bool g_trv_terminate;
+
+/****************************************************************************
+ * Private Data
+ *************************************************************************/
+
+static const char g_default_worldfile[] = "transfrm.wld";
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: trv_exit
+ *
+ * Description:
+ ****************************************************************************/
+
+static void trv_exit(int exitCode)
+{
+  /* Release memory held by the ray casting engine */
+
+  trv_world_destroy();
+
+  /* Close off input */
+
+  trv_input_terminate();
+  trv_graphics_terminate();
+
+  exit(exitCode);
+}
+
+/****************************************************************************
+ * Name: trv_usage
+ *
+ * Description:
+ ****************************************************************************/
+
+static void trv_usage(char *execname)
+{
+  fprintf(stderr, "Usage: %s [-b] [-p<path>] [world]\n", execname);
+  fprintf(stderr, "Where:\n");
+  fprintf(stderr, "  -b       Selects 640x400 window (default is 320x200)\n");
+  fprintf(stderr, "  -p<path> Selects the path to the world data file\n");
+  fprintf(stderr, "  world    Selects the world file name\n");
+  exit(EXIT_FAILURE);
+}
+
+/****************************************************************************
+ * Name: trv_current_time
+ *
+ * Description:
+ ****************************************************************************/
+
+#ifdef CONFIG_GRAPHICS_TRAVELER_PERFMON
+static double trv_current_time(void)
+{
+  struct timeval tv;
+
+  gettimeofday(&tv, NULL);
+  return (double) tv.tv_sec + (double) tv.tv_usec / 1000000.0;
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: main
+ *
+ * Description:
+ ****************************************************************************/
+
+int main(int argc, char *argv[])
+{
+  FAR struct trv_graphics_info_s ginfo;
+  struct trv_framebuffer_s frame;
+  FAR const char *world_filename;
+  uint8_t scale_factor = 1;
+#ifdef CONFIG_GRAPHICS_TRAVELER_PERFMON
+  int32_t frame_count = 0;
+  double elapsed_time = 0.0;
+  double start_time;
+#endif
+  int ret;
+  int i;
+
+  /* Check for command line arguments */
+
+  world_filename = g_default_worldfile;
+  for (i = 1; i < argc; i++)
+    {
+      FAR char *ptr = argv[i];
+      if (*ptr == '-')
+        {
+          ptr++;
+          switch (*ptr)
+            {
+            case 'b':
+              scale_factor = 2;
+              break;
+
+            case 'p' :
+              ptr++;
+              printf("World data path = %s\n", ptr);
+              if (chdir(ptr))
+                {
+                  fprintf(stderr, "Bad path name\n");
+                  trv_usage(argv[0]);
+                }
+              break;
+
+            default:
+              fprintf(stderr, "Invalid Switch\n");
+              trv_usage(argv[0]);
+              break;
+            }
+        }
+      else
+        {
+          world_filename = ptr;
+        }
+    }
+
+  printf("World data file = %s\n", world_filename);
+
+  /* Initialize the graphics interface */
+
+  ret = trv_graphics_initialize(320, 200, scale_factor, &ginfo);
+  if (ret < 0)
+    {
+      fprintf(stderr, "ERROR: trv_graphics_initialize failed: %d\n", ret);
+      trv_exit(EXIT_FAILURE);
+    }
+
+  /* Load the word data structures */
+
+  ret = trv_world_create(world_filename);
+  if (ret < 0)
+    {
+      fprintf(stderr, "ERROR: %d loading world file %s: %d\n",
+              world_filename, ret);
+      trv_exit(EXIT_FAILURE);
+    }
+
+  /* We can now release any color mapping tables */
+
+  trv_color_endmapping();
+
+  /* Set the player's POV in the new world */
+
+  trv_pov_reset();
+
+  /* Initialize the world's door */
+
+  trv_door_initialize();
+
+  /* Initialize the ray cast engine */
+
+  frame.width  = ginfo.width;
+  frame.height = ginfo.height;
+  frame.buffer = trv_get_renderbuffer(ginfo.width, ginfo.height);
+
+  if (!trv_raycaster_initialize(frame.width, frame.height,
+                                scale_factor, frame.buffer))
+    {
+      fprintf(stderr, "Error:  Initializing ray cast engine.\n");
+      trv_exit(EXIT_FAILURE);
+    }
+
+  /* Set up to receive input */
+
+  trv_input_initialize();
+
+  g_trv_terminate = false;
+  while (!g_trv_terminate)
+    {
+#ifdef CONFIG_GRAPHICS_TRAVELER_PERFMON
+      start_time = trv_current_time();
+#endif
+      trv_input_read();
+
+      /* Select the POV to use on this viewing cycle */
+
+      trv_pov_new();
+
+      /* Process door animations */
+
+      trv_door_animate();
+
+      /* Paint the back drop */
+
+      trv_rend_backdrop(&g_trv_player);
+
+      /* Render the 3-D view */
+
+      trv_raycaster(&g_trv_player);
+
+      /* Display the world. */
+
+      trv_display_update(&frame);
+#ifdef CONFIG_GRAPHICS_TRAVELER_PERFMON
+      frame_count++;
+      elapsed_time += trv_current_time() - start_time;
+      if (frame_count == 100)
+        {
+          fprintf(stderr, "fps = %3.2f\n", (double) frame_count / elapsed_time);
+          frame_count = 0;
+          elapsed_time = 0.0;
+        }
+#endif
+    }
+
+  trv_exit(EXIT_SUCCESS);
+  return 0;
+}
+
+/****************************************************************************
+ * Name: trv_abort
+ *
+ * Description:
+ ****************************************************************************/
+
+void trv_abort(FAR char *message, ...)
+{
+  va_list args;
+
+  va_start(args, message);
+  vfprintf(stderr, message, args);
+  putc('\n', stderr);
+  va_end(args);
+
+  trv_exit(EXIT_FAILURE);
+}