home *** CD-ROM | disk | FTP | other *** search
- /**********************************************************************\
-
- File: Rescue Raiders fade.c
-
- Purpose: Graphic effect to fade main screen to solid pattern.
- See comments below for more description.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program in a file named "GNU General Public License".
- If not, write to the Free Software Foundation, 675 Mass Ave,
- Cambridge, MA 02139, USA.
-
- \**********************************************************************/
-
- #include "timing.h"
-
- #define CorrectTime 5
- #define theWindowWidth (boundsRect.right-boundsRect.left)
- #define theWindowHeight (boundsRect.bottom-boundsRect.top)
-
- pascal short RescueRaidersFade(Rect boundsRect, Pattern *thePattern);
-
- /* One region in 8 parts. Each part of the region either starts at a corner
- or in the middle of a side and moves progressively clockwise until the
- entire screen is filled. Named after a similar effect in the game Rescue
- Raiders on the Apple ][e (now called Armor Alley™ on the Mac, but it doesn't
- have this effect in it anymore). */
-
- pascal short RescueRaidersFade(Rect boundsRect, Pattern *thePattern)
- {
- RgnHandle curregion, boundsRgn, sectrgn;
- int cx,cy,lastx,lasty;
- int BlockSize, VBlockSize;
-
- cx = theWindowWidth / 2;
- cy = theWindowHeight / 2;
- BlockSize=theWindowWidth/25;
- VBlockSize=theWindowHeight/25;
-
- lasty=lastx=0;
- boundsRgn=NewRgn();
- SetRectRgn(boundsRgn, boundsRect.left, boundsRect.top, boundsRect.right, boundsRect.bottom);
- sectrgn=NewRgn();
- curregion=NewRgn();
- do
- {
- StartTiming();
-
- SetEmptyRgn(curregion);
- MoveTo(cx,cy);
- OpenRgn();
- LineTo(lastx,0);
- Line(BlockSize,0);
- LineTo(theWindowWidth-lastx-BlockSize,theWindowHeight);
- Line(BlockSize,0);
- LineTo(cx,cy);
-
- LineTo(cx+lastx,0);
- Line(BlockSize,0);
- LineTo(cx-lastx-BlockSize,theWindowHeight);
- Line(BlockSize,0);
- LineTo(cx,cy);
-
- LineTo(theWindowWidth,lasty);
- Line(0,VBlockSize);
- LineTo(0,theWindowHeight-lasty-VBlockSize);
- Line(0,VBlockSize);
- LineTo(cx,cy);
-
- LineTo(theWindowWidth,cy+lasty);
- Line(0,VBlockSize);
- LineTo(0,cy-lasty-VBlockSize);
- Line(0,VBlockSize);
- LineTo(cx,cy);
- CloseRgn(curregion);
- OffsetRgn(curregion, boundsRect.left, boundsRect.top);
- SectRgn(curregion, boundsRgn, sectrgn);
- FillRgn(sectrgn, *thePattern);
-
- lastx+=BlockSize;
- lasty+=VBlockSize;
-
- TimeCorrection(CorrectTime);
- }
- while (lastx<cx);
-
- FillRect(&boundsRect, *thePattern); /* in case we missed any bits */
-
- DisposeRgn(curregion);
- DisposeRgn(boundsRgn);
- DisposeRgn(sectrgn);
-
- return 0;
- }
-