NSTimer/NSAffineTransform

Coin

Member

Posts: 102
Joined: 2005.01

Post: #1

Feb 2, 2005 — 09:41 PM

using them in togeather for the first time by myself and its failed miserably. here is what i have

crashView.h

Code:

#import <Cocoa/Cocoa.h>

enum{UP, DOWN, LEFT, RIGHT};

@interface crashView : NSView

{

    NSBezierPath *obsticales;

    NSBezierPath *sirCrashalot;

    NSAffineTransform *at;

    float dx, dy;

    BOOL canChangedir;

}

- (void)moveADirection:(int)dir;

@end

crashView.m

Code:

#import "crashView.h"

@implementation crashView

- (id)initWithFrame:(NSRect)frame

{

    NSRect sirCrashalotRect;

    self = [super initWithFrame:frame];

    if (self)    {

        dx = 0;

        dy = 0;

        at = [[NSAffineTransform transform] retain];

        [at translateXBy:dx yBy:dy];

        sirCrashalotRect = NSMakeRect(([self bounds].size.width/2)-5, 0, 10, 10);

        sirCrashalot = [[NSBezierPath bezierPathWithOvalInRect:sirCrashalotRect] retain];

        [NSTimer scheduledTimerWithTimeInterval:0.04

                                         target:self 

                                       selector:@selector(stepAnimation:) 

                                       userInfo:nil 

                                        repeats:YES];

    }

    return self;

}

- (void)drawRect:(NSRect)rect

{

    [[NSColor blueColor] set];

    [sirCrashalot fill];

}

-(void)keyDown:(NSEvent *)event

{

    NSString *key = [event charactersIgnoringModifiers];

    switch ([key characterAtIndex:0])    {

        case NSUpArrowFunctionKey:

            [self moveADirection:UP];

            break;

        case NSDownArrowFunctionKey:

            [self moveADirection:DOWN];

            break;

        case NSLeftArrowFunctionKey:

            [self moveADirection:LEFT];

            break;

        case NSRightArrowFunctionKey:

            [self moveADirection:RIGHT];

            break;

    }

}

//- (

- (BOOL)acceptsFirstResponder

{

    return YES;

}

- (void)moveADirection:(int)dir

{

    //moving directions here

        switch (dir)    {

            case UP:

                dy = 3;

                break;

            case DOWN:

                dy = -3;

                break;

            case LEFT:

                dx = -3;

                break;

            case RIGHT:

                dx = 3;

                break;

        }

}

- (void)stepAnimation:(NSTimer *)timer;

{

    [sirCrashalot transformUsingAffineTransform:at];

    [self setNeedsDisplay:YES];

}

@end

what it does is just sit there, and do absolutly nothing, what i want it to do is move around when i hit the keys... duh

:edit:
i changed keyDown to this

Code:

-(void)keyDown:(NSEvent *)event

{

    NSRunAlertPanel(@"down",nil,@"is a key",nil,nil);

    NSString *key = [event charactersIgnoringModifiers];

    switch ([key characterAtIndex:0])    {

        case NSUpArrowFunctionKey:

            NSRunAlertPanel(@"up",nil,@"d",nil,nil);

            [self moveADirection:UP];

            break;

        case NSDownArrowFunctionKey:

            NSRunAlertPanel(@"down",nil,@"d",nil,nil);

            [self moveADirection:DOWN];

            break;

        case NSLeftArrowFunctionKey:

            NSRunAlertPanel(@"left",nil,@"d",nil,nil);

            [self moveADirection:LEFT];

            break;

        case NSRightArrowFunctionKey:

            NSRunAlertPanel(@"right",nil,@"d",nil,nil);

            [self moveADirection:RIGHT];

            break;

    }

}

none of the panels pop up....
i checked the view is the first responder of the window and obviously it accepts that its in the code.

belthaczar

Unregistered

Post: #2

Feb 2, 2005 — 11:09 PM

Naming your subclass "CrashView" is just asking for trouble. If you click on the view with the mouse, does it start accepting key presses?

Coin

Member

Posts: 102
Joined: 2005.01

Post: #3

Feb 2, 2005 — 11:43 PM

yea i guess it is... and no, it was accepting keys in the begining then i added the timer and stuff and it stoped accepting keys

codemattic

Member

Posts: 304
Joined: 2002.04

Post: #4

Feb 3, 2005 — 10:49 PM

if you take out the timer does it work then? Are you sure that in IB you made your view a crashView? If you upload an example of your project Im sure I can puzzle it out - but nothing jumps out at me from what you posted here.

Coin

Member

Posts: 102
Joined: 2005.01

Post: #5

Feb 4, 2005 — 11:30 AM

I tried the noting out of the timer and it still doesnt work. and i cant upload things, not sure why.

jfaller

Apprentice

Posts: 19
Joined: 2004.10

Post: #6

Feb 4, 2005 — 02:31 PM

I experienced weirdness like this once. I know this sounds weird but I just moved the [NSTImer init] code out of the view's -init routine and into -awakeFromNib, and it worked fine.

Again, if you find a place to put the project, I'm sure someone can help you puzzle it out.

Coin

Member

Posts: 102
Joined: 2005.01

Post: #7

Feb 4, 2005 — 06:23 PM

grunt, didnt work, do i have to rebuild the NSAffineTransform object when i hit a button? im just editing its values...

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