home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
NeXTSTEP 3.0
/
NeXTSTEP3.0.iso
/
NextDeveloper
/
Examples
/
DistributedObjects
/
remoteSpot
/
Spot.m
< prev
next >
Wrap
Text File
|
1992-07-24
|
3KB
|
167 lines
#import "Spot.h"
#import "Thinker.h"
#import <appkit/color.h>
@implementation Spot
// This should return a float between 0 and 1
float frandom()
{
floatE'( = (random() & 0x7fffffff);
val /= 0x7fffffff;
return val;
}
float randBetween(float a, float b)
{
float val, scale, t;
if (a > b)
{ t = a; a = b; b = t;
}
scale = (b-a);
val = scale * frandom();
return (a + val);
}
- init
{
float r,g,b;
srandom(time(0));
r = frandom();
g = frandom();
b = frandom();
color = NXConvertRGBToColor(r,g,b);
location.x = randBetween(0,320);
location.y = randBetween(0,220);
isValid = YES;
return self;
}
- (NXColor) color
{ return color;
}
- (NXPoint) location
{ return location;
}
- (BOOL) setLocation:(NXPoint)pnt
{
if (!isValid)
{
[[NXApp delegate] spotDidChange];
return NO;
}
if (pnt.x < -15) pnt.x = -15;
else if (pnt.x > 335) pnt.x = 335;
if (pnt.y < -15) pnt.y = -15;
else if (pnt.y > 235) pnt.y = 235;
location = pnt;
[[NXApp delegate] spotDidChange];
return YES;
}
- (BOOL) doLock
{
if (locked) return NO;
locked = YES;
return YES;
}
- unlock
{
locked = NO;
return self;
}
- invalidate
{ isValid = NO;
return nil;
}
- (BOOL) isValid
{ return isValid;
}
- encodeRemotelyFor:(NXConnection *)connection
freeAfterEncoding:(BOOL *)flagp
isBycopy:(BOOL)isBycopy
{
if (isBycopy) return self;
return [super encodeRemotelyFor:connection
freeAfterEncoding:flagp
isBycopy:isBycopy];
}
- encodeUsing:(id <NXEncoding>)portal
{
//xxx should encode valid flag
float r,g,b;
NXConvertColorToRGB(color, &r, &g, &b);
[portal encodeData:&location.x ofType:"f"];
[portal encodeData:&location.y ofType:"f"];
[portal encodeData:&r ofType:"f"];
[portal encodeData:&g ofType:"f"];
[portal encodeData:&b ofType:"f"];
return self;
}
- decodeUsing:(id <NXDecoding>)portal
{
float r,g,b;
NXPoint p;
NXColor c;
[portal decodeData:&p.x ofType:"f"];
[portal decodeData:&p.y ofType:"f"];
[portal decodeData:&r ofType:"f"];
[portal decodeData:&g ofType:"f"];
[portal decodeData:&b ofType:"f"];
c = NXConvertRGBToColor(r,g,b);
// [self init]; //not really necessary in this case...
color = c;
location = p;
return self;
}
- (unsigned) references
{
return refs;
}
- addReference
{
refs++;
// printf("Spot: adding reference, refs = %d\n",(int)refs);
return self;
}
- free
{
refs--;
// printf("Spot: decrementing reference, refs = %d\n", (int)refs);
if (refs > 0) return self;
// printf("Spot: ...and freeing\n");
// this cleans up remoteE')nections that still have refs to theSpot
[NXConnection removeObject:self];
return [super free];
}
@end