+void DrawLevelFieldCrumbledSand(int x, int y)
+{
+ DrawLevelFieldCrumbledSandExt(x, y, IMG_SAND_CRUMBLED, 0);
+}
+
+void DrawLevelFieldCrumbledSandDigging(int x, int y, int direction,
+ int step_frame)
+{
+ int graphic1 = el_act_dir2img(EL_SAND, ACTION_DIGGING, direction);
+ int graphic2 = el_act_dir2img(EL_SAND_CRUMBLED, ACTION_DIGGING, direction);
+ int frame1 = getGraphicAnimationFrame(graphic1, step_frame);
+ int frame2 = getGraphicAnimationFrame(graphic2, step_frame);
+ int sx = SCREENX(x), sy = SCREENY(y);
+
+ DrawGraphic(sx, sy, graphic1, frame1);
+ DrawLevelFieldCrumbledSandExt(x, y, graphic2, frame2);
+}
+
+static int getBorderElement(int x, int y)
+{
+ int border[7][2] =
+ {
+ { EL_STEELWALL_TOPLEFT, EL_INVISIBLE_STEELWALL_TOPLEFT },
+ { EL_STEELWALL_TOPRIGHT, EL_INVISIBLE_STEELWALL_TOPRIGHT },
+ { EL_STEELWALL_BOTTOMLEFT, EL_INVISIBLE_STEELWALL_BOTTOMLEFT },
+ { EL_STEELWALL_BOTTOMRIGHT, EL_INVISIBLE_STEELWALL_BOTTOMRIGHT },
+ { EL_STEELWALL_VERTICAL, EL_INVISIBLE_STEELWALL_VERTICAL },
+ { EL_STEELWALL_HORIZONTAL, EL_INVISIBLE_STEELWALL_HORIZONTAL },
+ { EL_STEELWALL, EL_INVISIBLE_STEELWALL }
+ };
+ int steel_type = (BorderElement == EL_STEELWALL ? 0 : 1);
+ int steel_position = (x == -1 && y == -1 ? 0 :
+ x == lev_fieldx && y == -1 ? 1 :
+ x == -1 && y == lev_fieldy ? 2 :
+ x == lev_fieldx && y == lev_fieldy ? 3 :
+ x == -1 || x == lev_fieldx ? 4 :
+ y == -1 || y == lev_fieldy ? 5 : 6);
+
+ return border[steel_position][steel_type];
+}
+