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Info_Mac IV CD-ROM (Pacific HiTech Inc.)(August 1994).iso
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MSG Demo 1.4.source Folder
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Rescue Raiders.c
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1994-04-15
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/**********************************************************************\
File: Rescue Raiders.c
Purpose: Graphic effect from offscreen bitmap to main window (on
screen). 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 RescueRaiders(GrafPtr sourceGrafPtr, GrafPtr destGrafPtr, Rect boundsRect);
/* 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 RescueRaiders(GrafPtr sourceGrafPtr, GrafPtr destGrafPtr, Rect boundsRect)
{
RgnHandle curregion;
int cx,cy,lastx,lasty;
int BlockSize, VBlockSize;
cx = theWindowWidth / 2;
cy = theWindowHeight / 2;
BlockSize=theWindowWidth/25;
VBlockSize=theWindowHeight/25;
lasty=lastx=0;
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);
CopyBits(&(sourceGrafPtr->portBits), &(destGrafPtr->portBits),
&boundsRect, &boundsRect, 0, curregion);
lastx+=BlockSize;
lasty+=VBlockSize;
TimeCorrection(CorrectTime);
}
while (lastx<cx);
CopyBits(&(sourceGrafPtr->portBits), &(destGrafPtr->portBits),
&boundsRect, &boundsRect, 0, 0L); /* in case we missed any bits */
DisposeRgn(curregion);
return 0;
}