Debug: Show ObjectSpec flags and more fields in debug window

src/table/newgrf_debug_data.h

@@ -856,6 +856,34 @@ class NIHObject : public NIHelper {
 		if (spec) {
 			seprintf(buffer, lastof(buffer), "  animation: frames: %u, status: %u, speed: %u, triggers: 0x%X", spec->animation.frames, spec->animation.status, spec->animation.speed, spec->animation.triggers);
 			output.print(buffer);
+			seprintf(buffer, lastof(buffer), "  size: %ux%u, height: %u, views: %u", GB(spec->size, 4, 4), GB(spec->size, 0, 4), spec->height, spec->views);
+			output.print(buffer);
+
+			output.register_next_line_click_flag_toggle(1);
+			seprintf(buffer, lastof(buffer), "  [%c] flags: 0x%X", output.flags & 1 ? '-' : '+', spec->flags);
+			output.print(buffer);
+			if (output.flags & 1) {
+				auto check_flag = [&](ObjectFlags flag, const char *name) {
+					if (spec->flags & flag) {
+						seprintf(buffer, lastof(buffer), "    %s", name);
+						output.print(buffer);
+					}
+				};
+				check_flag(OBJECT_FLAG_ONLY_IN_SCENEDIT,   "OBJECT_FLAG_ONLY_IN_SCENEDIT");
+				check_flag(OBJECT_FLAG_CANNOT_REMOVE,      "OBJECT_FLAG_CANNOT_REMOVE");
+				check_flag(OBJECT_FLAG_AUTOREMOVE,         "OBJECT_FLAG_AUTOREMOVE");
+				check_flag(OBJECT_FLAG_BUILT_ON_WATER,     "OBJECT_FLAG_BUILT_ON_WATER");
+				check_flag(OBJECT_FLAG_CLEAR_INCOME,       "OBJECT_FLAG_CLEAR_INCOME");
+				check_flag(OBJECT_FLAG_HAS_NO_FOUNDATION,  "OBJECT_FLAG_HAS_NO_FOUNDATION");
+				check_flag(OBJECT_FLAG_ANIMATION,          "OBJECT_FLAG_ANIMATION");
+				check_flag(OBJECT_FLAG_ONLY_IN_GAME,       "OBJECT_FLAG_ONLY_IN_GAME");
+				check_flag(OBJECT_FLAG_2CC_COLOUR,         "OBJECT_FLAG_2CC_COLOUR");
+				check_flag(OBJECT_FLAG_NOT_ON_LAND,        "OBJECT_FLAG_NOT_ON_LAND");
+				check_flag(OBJECT_FLAG_DRAW_WATER,         "OBJECT_FLAG_DRAW_WATER");
+				check_flag(OBJECT_FLAG_ALLOW_UNDER_BRIDGE, "OBJECT_FLAG_ALLOW_UNDER_BRIDGE");
+				check_flag(OBJECT_FLAG_ANIM_RANDOM_BITS,   "OBJECT_FLAG_ANIM_RANDOM_BITS");
+				check_flag(OBJECT_FLAG_SCALE_BY_WATER,     "OBJECT_FLAG_SCALE_BY_WATER");
+			}
 		}
 	}
 };