ftp.nice.ch/pub/next/games/fun/cookie.s.tar.gz#/Cookie/BattleZoneView.m

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/* Generated by Interface Builder */

#import "BattleZoneView.h"

void RunBattleEntry(DPSTimedEntry te, double timeNow, void *data)
{
  /* we set data to self so we can call this method from the timed entry */
	[(BattleZoneView *)data display];
}

void DisplayBattleFrame(float width,float height,float *Lines);

@implementation BattleZoneView

- drawSelf:(const NXRect *)rects :(int)rectCount
{
	int count;
	float myLines[5];

	if(step == -1)
	{
		PSsetgray(0.0);
		NXRectFill(&bounds);
		step = 0;
	}

	for(count = 0; count < 5; count++)
		myLines[count] = Lines[(count*10)+step];

	myLines[0] = Lines[0];

	step++;
	if(step == 10)
		step = 0;

	DisplayBattleFrame(bounds.size.width,bounds.size.height,myLines);

	return self;
}

- startAnimation
{
	myTimedEntry =
		DPSAddTimedEntry((float)0.02,
			&RunBattleEntry,self,NX_BASETHRESHOLD);

	return self;
}

- endAnimation
{
	DPSRemoveTimedEntry(myTimedEntry);

	return self;
}

- initFrame:(const NXRect *)frameRect
{
	int count;
	float totalSize = 0.0,Delta = 1.0,sofa = 0.0;

#define height frameRect->size.height

	[super initFrame :frameRect];

	step = -1;

	for(count = 0; count < 50; count++)
	{
		totalSize += Delta;
		Delta *= 1.075;
	}

	Delta = 1.0;

	for(count = 0; count < 50; count++)
	{
		sofa += Delta;
		Delta *= 1.075;

		Lines[count] = height-((sofa*height)/totalSize);
	}

	return self;
}

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.