camera: implement fixed cursor movement

On platforms with PERIPHERAL_TYPE_PAD, navigating through menus and
options can be cumbersome if moving the cursor freely around the
screen.

Therefore, this commit instead defines a list of (X, Y) coordinates that
the cursor can jump to. The implementation also attempts to guess which
direction the cursor should jump to for the previous/next point, and
hence determine which button should be pressed by the user.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/camera/inc/camera.h b/src/camera/inc/camera.h
index 98cb240..9841315 100644
--- a/src/camera/inc/camera.h
+++ b/src/camera/inc/camera.h
@@ -35,6 +35,16 @@ struct camera
         {
             int last_w, last_h;
         } screen;
+
+        struct cursor_pos_rt
+        {
+            const struct cursor_pos
+            {
+                unsigned x, y;
+            } *list;
+
+            size_t i, n;
+        } rt;
     } cursor;
 };
 
@@ -45,6 +55,7 @@ bool camera_translate(const struct camera *cam, const struct util_rect *dim, sho
 void cursor_init(struct cursor *c);
 bool cursor_collision(const struct camera *cam, const struct util_rect *d);
 void cursor_pos(const struct camera *cam, unsigned long *x, unsigned long *y);
+void cursor_set_pos_list(struct cursor *c, const struct cursor_pos *pos, size_t n);
 int cursor_render(const struct cursor *c);
 
 #ifdef __cplusplus