+void DrawEnvelopeBackground(int envelope_nr, int startx, int starty,
+ int x, int y, int xsize, int ysize, int font_nr)
+{
+ int font_width = getFontWidth(font_nr);
+ int font_height = getFontHeight(font_nr);
+ int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
+ Bitmap *src_bitmap;
+ int src_x, src_y;
+ int dst_x = SX + startx + x * font_width;
+ int dst_y = SY + starty + y * font_height;
+ int width = graphic_info[graphic].width;
+ int height = graphic_info[graphic].height;
+ int inner_width = MAX(width - 2 * font_width, font_width);
+ int inner_height = MAX(height - 2 * font_height, font_height);
+ int inner_sx = (width >= 3 * font_width ? font_width : 0);
+ int inner_sy = (height >= 3 * font_height ? font_height : 0);
+ boolean draw_masked = graphic_info[graphic].draw_masked;
+
+ getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
+
+ if (src_bitmap == NULL || width < font_width || height < font_height)
+ {
+ ClearRectangle(drawto, dst_x, dst_y, font_width, font_height);
+ return;
+ }
+
+ src_x += (x == 0 ? 0 : x == xsize - 1 ? width - font_width :
+ inner_sx + (x - 1) * font_width % inner_width);
+ src_y += (y == 0 ? 0 : y == ysize - 1 ? height - font_height :
+ inner_sy + (y - 1) * font_height % inner_height);
+
+ if (draw_masked)
+ {
+ SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc,
+ dst_x - src_x, dst_y - src_y);
+ BlitBitmapMasked(src_bitmap, drawto, src_x, src_y, font_width, font_height,
+ dst_x, dst_y);
+ }
+ else
+ BlitBitmap(src_bitmap, drawto, src_x, src_y, font_width, font_height,
+ dst_x, dst_y);
+}
+
+void AnimateEnvelope(int envelope_nr, int anim_mode, int action)
+{
+ int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
+ boolean draw_masked = graphic_info[graphic].draw_masked;
+ int mask_mode = (draw_masked ? BLIT_MASKED : BLIT_ON_BACKGROUND);
+ boolean ffwd_delay = (tape.playing && tape.fast_forward);
+ unsigned long anim_delay = 0;
+ int anim_delay_value = (ffwd_delay ? FfwdFrameDelay : GameFrameDelay);
+ int font_nr = FONT_ENVELOPE_1 + envelope_nr;
+ int font_width = getFontWidth(font_nr);
+ int font_height = getFontHeight(font_nr);
+ int max_xsize = level.envelope_xsize[envelope_nr];
+ int max_ysize = level.envelope_ysize[envelope_nr];
+ int xstart = (anim_mode & ANIM_VERTICAL ? max_xsize : 0);
+ int ystart = (anim_mode & ANIM_HORIZONTAL ? max_ysize : 0);
+ int xend = max_xsize;
+ int yend = (anim_mode != ANIM_DEFAULT ? max_ysize : 0);
+ int xstep = (xstart < xend ? 1 : 0);
+ int ystep = (ystart < yend || xstep == 0 ? 1 : 0);
+ int x, y;
+
+ for (x = xstart, y = ystart; x <= xend && y <= yend; x += xstep, y += ystep)
+ {
+ int xsize = (action == ACTION_CLOSING ? xend - (x - xstart) : x) + 2;
+ int ysize = (action == ACTION_CLOSING ? yend - (y - ystart) : y) + 2;
+ int sx = (SXSIZE - xsize * font_width) / 2;
+ int sy = (SYSIZE - ysize * font_height) / 2;
+ int xx, yy;
+
+ SetDrawtoField(DRAW_BUFFERED);
+
+ BlitBitmap(fieldbuffer, backbuffer, FX, FY, SXSIZE, SYSIZE, SX, SY);
+
+ SetDrawtoField(DRAW_BACKBUFFER);
+
+ for (yy = 0; yy < ysize; yy++) for (xx = 0; xx < xsize; xx++)
+ DrawEnvelopeBackground(envelope_nr, sx,sy, xx,yy, xsize, ysize, font_nr);
+
+ DrawTextToTextArea(SX + sx + font_width, SY + sy + font_height,
+ level.envelope_text[envelope_nr], font_nr, max_xsize,
+ xsize - 2, ysize - 2, mask_mode);
+
+ redraw_mask |= REDRAW_FIELD | REDRAW_FROM_BACKBUFFER;
+ BackToFront();
+
+ WaitUntilDelayReached(&anim_delay, anim_delay_value / 2);
+ }
+}
+
+void ShowEnvelope(int envelope_nr)
+{
+ int element = EL_ENVELOPE_1 + envelope_nr;
+ int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
+ int sound_opening = element_info[element].sound[ACTION_OPENING];
+ int sound_closing = element_info[element].sound[ACTION_CLOSING];
+ boolean ffwd_delay = (tape.playing && tape.fast_forward);
+ int wait_delay_value = (ffwd_delay ? 500 : 1000);
+ int anim_mode = graphic_info[graphic].anim_mode;
+ int main_anim_mode = (anim_mode == ANIM_NONE ? ANIM_VERTICAL|ANIM_HORIZONTAL:
+ anim_mode == ANIM_DEFAULT ? ANIM_VERTICAL : anim_mode);
+
+ game.envelope_active = TRUE; /* needed for RedrawPlayfield() events */
+
+ PlaySoundStereo(sound_opening, SOUND_MIDDLE);
+
+ if (anim_mode == ANIM_DEFAULT)
+ AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_OPENING);
+
+ AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_OPENING);
+
+ if (tape.playing)
+ Delay(wait_delay_value);
+ else
+ WaitForEventToContinue();
+
+ PlaySoundStereo(sound_closing, SOUND_MIDDLE);
+
+ if (anim_mode != ANIM_NONE)
+ AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_CLOSING);
+
+ if (anim_mode == ANIM_DEFAULT)
+ AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_CLOSING);
+
+ game.envelope_active = FALSE;
+
+ SetDrawtoField(DRAW_BUFFERED);
+
+ redraw_mask |= REDRAW_FIELD;
+ BackToFront();
+}
+