Add fourth of several ray cast/rendering files

graphics/traveler/Makefile

@@ -47,8 +47,8 @@ STACKSIZE = 2048
 
 ASRCS   =
 CSRCS   = trv_bitmaps.c trv_color.c trv_doors.c trv_graphics.c trv_input.c
-CSRCS  += trv_mem.c trv_plane.c trv_pov.c trv_rayavoid.c trv_raycntl.c
+CSRCS  += trv_mem.c trv_plane.c trv_pov.c trv_rayavoid.c trv_raycast.c
-CSRCS  += trv_rayrend.c trv_trigtbl.c
+CSRCS  += trv_raycntl.c trv_rayrend.c trv_trigtbl.c
 MAINSRC = trv_main.c
 
 ifeq ($(CONFIG_NX),y)

graphics/traveler/include/trv_doors.h

@@ -42,6 +42,32 @@
 
 #include "trv_types.h"
 
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/* This structure describes the characteristics of the door which currently
+ * being opened.
+ */
+
+struct trv_opendoor_s
+{
+  FAR struct trv_rect_data_s *rect; /* Points to the current door rectangle */
+  uint8_t       state;              /* State of the door being opened */
+  trv_coord_t   zbottom;            /* Z-Coordinate of the bottom of the door */
+  trv_coord_t   zdist;              /* Distance which the door has moved */
+  int16_t       clock;              /* This is clock which counts down the time
+                                     * remaining to keep the door open */
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* This structure describes the door which is currently opening */
+
+struct trv_opendoor_s g_opendoor;
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/

graphics/traveler/include/trv_raycast.h

@@ -163,7 +163,7 @@ extern struct trv_camera_s g_camera;
  * Public Function Prototypes
  ****************************************************************************/
 
-void trv_raycast(int16_t pitchangle, int16_t yawangle, int16_t screenyaw,
+void trv_raycast(int16_t pitch, int16_t yaw, int16_t screenyaw,
                  FAR struct trv_raycast_s *result);
 
 #endif /* __APPS_GRAPHICS_TRAVELER_INCLUDE_TRV_RAYCAST_H */

graphics/traveler/include/trv_rayprune.h

@@ -42,6 +42,14 @@
 
 #include "trv_types.h"
 
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+extern struct trv_rect_head_s g_ray_xplane;  /* List of X=plane rectangles */
+extern struct trv_rect_head_s g_ray_yplane;  /* List of Y=plane rectangles */
+extern struct trv_rect_head_s g_ray_zplane;  /* List of Z=plane rectangles */
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/

graphics/traveler/src/trv_doors.c

@@ -69,20 +69,6 @@ enum trv_door_state_e
   DOOR_CLOSING,     /* A door is closing */
 };
 
-/* This structure describes the characteristics of the door which currently
- * being opened.
- */
-
-struct trv_opendoor_s
-{
-  FAR struct trv_rect_data_s *rect; /* Points to the current door rectangle */
-  uint8_t       state;              /* State of the door being opened */
-  trv_coord_t   zbottom;            /* Z-Coordinate of the bottom of the door */
-  trv_coord_t   zdistance;          /* Distance which the door has moved */
-  int16_t       clock;              /* This is clock which counts down the time
-                                     * remaining to keep the door open */
-};
-
 /****************************************************************************
  * Private Function Prototypes
  ****************************************************************************/
@@ -149,7 +135,7 @@ static void trv_door_startopen (void)
           g_opendoor.rect    = rect;
           g_opendoor.state   = DOOR_OPENING;
           g_opendoor.zbottom = rect->vstart;
-          g_opendoor.zdistance = 0;
+          g_opendoor.zdist   = 0;
 
           /* Mark the door's attribute to indicate that it is in motion */
 
@@ -177,7 +163,7 @@ static void trv_door_animation(void)
       /* Raise the door a little */
 
       g_opendoor.zbottom += DOOR_ZSTEP;
-      g_opendoor.zdistance += DOOR_ZSTEP;
+      g_opendoor.zdist   += DOOR_ZSTEP;
 
       /* When the bottom of the door is above the player's head, we will
        * say that the door is open
@@ -195,7 +181,7 @@ static void trv_door_animation(void)
           /* Make sure that the door does not open wider than it is tall */
 
           g_opendoor.zbottom = g_opendoor.rect->vend;
-          g_opendoor.zdistance = g_opendoor.rect->vend - g_opendoor.rect->vstart;
+          g_opendoor.zdist   = g_opendoor.rect->vend - g_opendoor.rect->vstart;
 
           /* The door is done opening, the next state is the DOOR_OPEN state
            * where we will hold the door open a while
@@ -229,7 +215,7 @@ static void trv_door_animation(void)
           /* Lower the door a little */
 
           g_opendoor.zbottom -= DOOR_ZSTEP;
-          g_opendoor.zdistance -= DOOR_ZSTEP;
+          g_opendoor.zdist   -= DOOR_ZSTEP;
 
           /* When the bottom of the door is below the player's head, we
            * will say that the door is closed
@@ -248,7 +234,7 @@ static void trv_door_animation(void)
       /* Lower the door a little */
 
       g_opendoor.zbottom -= DOOR_ZSTEP;
-      g_opendoor.zdistance -= DOOR_ZSTEP;
+      g_opendoor.zdist   -= DOOR_ZSTEP;
 
       /* When the bottom of the door is below the player's head, we will
        * say that the door is closed
@@ -261,7 +247,7 @@ static void trv_door_animation(void)
 
       /* Check if the door is fully closed */
 
-      if (g_opendoor.zdistance <= 0)
+      if (g_opendoor.zdist <= 0)
         {
           /* Indicate that the door is no longer in motion */