+char *getElementDescriptionFilename(int element)
+{
+ char *docs_dir = options.docs_directory;
+ char *elements_subdir = "elements";
+ static char *filename = NULL;
+ char basename[MAX_FILENAME_LEN];
+
+ if (filename != NULL)
+ free(filename);
+
+ /* 1st try: look for element description file for exactly this element */
+ sprintf(basename, "%s.txt", element_info[element].token_name);
+ filename = getPath3(docs_dir, elements_subdir, basename);
+ if (fileExists(filename))
+ return filename;
+
+ free(filename);
+
+ /* 2nd try: look for element description file for this element's class */
+ sprintf(basename, "%s.txt", element_info[element].class_name);
+ filename = getPath3(docs_dir, elements_subdir, basename);
+ if (fileExists(filename))
+ return filename;
+
+ return NULL;
+}
+
+static int PrintElementDescriptionFromFile(char *filename)
+{
+ int font_nr = FONT_TEXT_2;
+ int font_width = getFontWidth(font_nr);
+ int font_height = getFontHeight(font_nr);
+ int pad_x = ED_SETTINGS_XPOS;
+ int pad_y = 5 * TILEY;
+ int sx = SX + pad_x;
+ int sy = SY + pad_y;
+ int max_chars_per_line = (SXSIZE - 2 * pad_x) / font_width;
+ int max_lines_per_screen = (SYSIZE - pad_y) / font_height - 1;
+ int screen_line_nr = 0;
+ char line[MAX_LINE_LEN];
+ char buffer[max_chars_per_line + 1];
+ int buffer_len;
+ FILE *file;
+
+ if (filename == NULL)
+ return 0;
+
+ if (!(file = fopen(filename, MODE_READ)))
+ return 0;
+
+ buffer[0] = '\0';
+ buffer_len = 0;
+
+ while(!feof(file))
+ {
+ char *line_ptr, *word_ptr;
+ boolean last_line_was_empty = TRUE;
+
+ /* read next line of input file */
+ if (!fgets(line, MAX_LINE_LEN, file))
+ break;
+
+ /* skip comments (lines directly beginning with '#') */
+ if (line[0] == '#')
+ continue;
+
+ /* cut trailing newline from input line */
+ for (line_ptr = line; *line_ptr; line_ptr++)
+ {
+ if (*line_ptr == '\n' || *line_ptr == '\r')
+ {
+ *line_ptr = '\0';
+ break;
+ }
+ }
+
+ if (strlen(line) == 0) /* special case: force empty line */
+ strcpy(line, "\n");
+
+ word_ptr = line;
+
+ while (*word_ptr)
+ {
+ boolean print_buffer = FALSE;
+ int word_len;
+
+ /* skip leading whitespaces */
+ while (*word_ptr == ' ' || *word_ptr == '\t')
+ word_ptr++;
+
+ line_ptr = word_ptr;
+ word_len = 0;
+
+ /* look for end of next word */
+ while (*line_ptr != ' ' && *line_ptr != '\t' && *line_ptr != '\0')
+ {
+ line_ptr++;
+ word_len++;
+ }
+
+ if (word_len == 0)
+ {
+ continue;
+ }
+ else if (*word_ptr == '\n') /* special case: force empty line */
+ {
+ if (buffer_len == 0)
+ word_ptr++;
+
+ /* prevent printing of multiple empty lines */
+ if (buffer_len > 0 || !last_line_was_empty)
+ print_buffer = TRUE;
+ }
+ else if (word_len < max_chars_per_line - buffer_len)
+ {
+ /* word fits into text buffer -- add word */
+
+ if (buffer_len > 0)
+ buffer[buffer_len++] = ' ';
+
+ strncpy(&buffer[buffer_len], word_ptr, word_len);
+ buffer_len += word_len;
+ buffer[buffer_len] = '\0';
+ word_ptr += word_len;
+ }
+ else if (buffer_len > 0)
+ {
+ /* not enough space left for word in text buffer -- print buffer */
+
+ print_buffer = TRUE;
+ }
+ else
+ {
+ /* word does not fit at all into empty text buffer -- cut word */
+
+ strncpy(buffer, word_ptr, max_chars_per_line);
+ buffer[max_chars_per_line] = '\0';
+ word_ptr += max_chars_per_line;
+ print_buffer = TRUE;
+ }
+
+ if (print_buffer)
+ {
+ DrawText(sx, sy + screen_line_nr * font_height, buffer, FONT_TEXT_2);
+
+ last_line_was_empty = (buffer_len == 0);
+
+ buffer[0] = '\0';
+ buffer_len = 0;
+ print_buffer = FALSE;
+
+ if (++screen_line_nr >= max_lines_per_screen)
+ return screen_line_nr; /* currently too much text gets cut */
+ }
+ }
+ }
+
+ if (buffer_len > 0)
+ {
+ DrawText(sx, sy + screen_line_nr * font_height, buffer, FONT_TEXT_2);
+ screen_line_nr++;
+ }
+
+ fclose(file);
+
+ return screen_line_nr;
+}
+
+static void DrawPropertiesInfo()
+{
+ char *filename = getElementDescriptionFilename(properties_element);
+
+ if (PrintElementDescriptionFromFile(filename) == 0)
+ DrawText(SX + ED_SETTINGS_XPOS, SY + 5 * TILEY,
+ "No description available.", FONT_TEXT_1);
+}
+
+static void DrawPropertiesAdvanced()
+{
+ DrawText(SX + ED_SETTINGS_XPOS, SY + 5 * TILEY, "Coming soon!", FONT_TEXT_1);
+}
+
+static void DrawPropertiesWindow()
+{
+ int xstart = 2;
+ int ystart = 4;
+
+ /* make sure that previous properties edit mode exists for this element */
+ if (edit_mode_properties == ED_MODE_PROPERTIES_ADVANCED &&
+ !IS_CUSTOM_ELEMENT(properties_element))
+ edit_mode_properties = ED_MODE_PROPERTIES_MAIN;
+
+ UnmapLevelEditorWindowGadgets();
+
+ SetMainBackgroundImage(IMG_BACKGROUND_EDITOR);
+ ClearWindow();
+
+ DrawText(SX + ED_SETTINGS2_XPOS, SY + ED_SETTINGS_YPOS,
+ "Element Settings", FONT_TITLE_1);
+
+ DrawElementBorder(SX + xstart * MINI_TILEX,
+ SY + ystart * MINI_TILEY + MINI_TILEY / 2,
+ TILEX, TILEY);
+ DrawGraphicAnimationExt(drawto,
+ SX + xstart * MINI_TILEX,
+ SY + ystart * MINI_TILEY + MINI_TILEY / 2,
+ el2edimg(properties_element), -1, NO_MASKING);
+
+ FrameCounter = 0; /* restart animation frame counter */
+
+ DrawTextF((xstart + 3) * MINI_TILEX, (ystart + 1) * MINI_TILEY,
+ FONT_TEXT_1, getElementInfoText(properties_element));
+
+ DrawPropertiesTabulatorGadgets();
+
+ if (edit_mode_properties == ED_MODE_PROPERTIES_MAIN)
+ DrawPropertiesMain();
+ else if (edit_mode_properties == ED_MODE_PROPERTIES_INFO)
+ DrawPropertiesInfo();
+ else /* edit_mode_properties == ED_MODE_PROPERTIES_ADVANCED */
+ DrawPropertiesAdvanced();
+}
+