WIP Bon. Il reste juste cette inversion Nord/Sud dans le dessin, semble-t-il.

src/graphics/arrows.c

@@ -90,5 +90,3 @@ int write_one_arrow_line(int offset_vertex, int print)
     graphics_write_line (offset_vertex + 0, offset_vertex + 1, print);
     return 2;
 }
-
-

src/graphics/graphics.c

@@ -596,6 +596,7 @@ bool graphics_shutdown(const void *gl_area)
 
 static int rewrite_arrow (int arrows_nb, int address, int load, int site, int x, int y, int z, int console)
 {
+    printf("WARNING in rewrite_arrow()  <>  address  or  address / 5  ?   (et pourquoi ?)\n");
     arrows_ptr[address].load = load;
 
     if (console) print_arrows_array (arrows_ptr, arrows_nb, 2);
@@ -665,11 +666,13 @@ static inline int erase_arrow (int arrows_nb, int arrow_address_in_list,
             arrows_nb + 1, arrows_nb, arrow_address_in_list, arrow_address_in_list, mem, arrows_nb, arrows_ptr[arrows_nb].site);
     }
 
-    for (long i = 0 + arrow_address_in_list * 6; i < 6 + arrow_address_in_list * 6; i++)
+    for (long i = 0; i < 6; i++)
-        buffer_vertex_origin [buffer_vertex_0_arrow + i] = buffer_vertex_origin [buffer_vertex_size - 6 + i];
+        buffer_vertex_origin [buffer_vertex_0_arrow + arrow_address_in_list * 6 + i]
+      = buffer_vertex_origin [buffer_vertex_size - 6 + i];
 
-    for (long i = 0 + arrow_address_in_list * 6; i < 6 + arrow_address_in_list * 6; i++)
+    for (long i = 0; i < 6; i++)
-        buffer_colors_origin [buffer_colors_0_arrow + i] = buffer_colors_origin [buffer_colors_size - 6 + i];
+        buffer_colors_origin [buffer_colors_0_arrow + arrow_address_in_list * 6 + i]
+      = buffer_colors_origin [buffer_colors_size - 6 + i];
 
     buffer_vertex_size -= 6;   // <<<   l'inverse de ce qui est fait dans : graphics_write_vertex()
     buffer_colors_size -= 6;   // <<<   l'inverse de ce qui est fait dans : graphics_write_colors()
@@ -725,7 +728,7 @@ static inline int set_arrow (struct arrow_t *arrows_ptr, int arrows_nb, int spac
     if (address >=  0 && requested_weight == 0) //   address >=  0  if and only if  arrows_nb > 0
         return erase_arrow   (arrows_nb, address, site, arrow_x, arrow_y, arrow_z, console);
     if (address >=  0 && current_weight != requested_weight)
-        return rewrite_arrow (arrows_nb, address/5, requested_weight, site, arrow_x, arrow_y, arrow_z, console);
+        return rewrite_arrow (arrows_nb, address, requested_weight, site, arrow_x, arrow_y, arrow_z, console);
     if (address >=  0 && current_weight == requested_weight && console) print_arrows_array(arrows_ptr, arrows_nb, 3);
     if (address == -1 && requested_weight == 0 && console)              print_arrows_array(arrows_ptr, arrows_nb, 4);
 
@@ -784,11 +787,11 @@ void main_test_graphics (void)
                                rand() % space_Z,    //    z
                                console);
     /* else for (int i = 0; i < 1; i++) ; */
-    arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 0, 0, 0, 0, 1);
+    /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 0, 0, 0, 0, 1); */
-    arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 1, 0, 0, 0, 1);
+    /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 1, 0, 0, 0, 1); */
     /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 2, 0, 0, 0, 1); */
     /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 3, 0, 0, 0, 1); */
-    /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 4, 0, 0, 0, 1); */
+    arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 4, 0, 0, 0, 1);
     /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 5, 0, 0, 0, 1); */
     /* arrows_nb = set_arrow (arrows_ptr, arrows_nb, 1, 1, 1, 0, 6, 0, 0, 0, 1); */