/*

    Copyright (C) 2015 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Demonstrates seek behavior. Click (OS X) or touch (iOS) and drag and the agent follows the mouse/touch location.

 */

#import "AAPLSeekScene.h"

#import "AAPLAgentNode.h"

@interface AAPLSeekScene ()

@property AAPLAgentNode *player;

@property GKGoal *seekGoal;

@end

@implementation AAPLSeekScene

- (NSString *)sceneName {

    return @"SEEKING";

}

- (void)didMoveToView:(nonnull SKView *)view {

    [super didMoveToView:view];

    // The player agent follows the tracking agent.

    self.player = [[AAPLAgentNode alloc] initWithScene:self

                                                radius:AAPLDefaultAgentRadius

                                              position:CGPointMake(CGRectGetMidX(self.frame),

                                                                   CGRectGetMidY(self.frame))];

    self.player.agent.behavior = [[GKBehavior alloc] init];

    [self.agentSystem addComponent:self.player.agent];

    // Create the seek goal, but add it to the behavior only in -setSeeking:.

    self.seekGoal = [GKGoal goalToSeekAgent:self.trackingAgent];

}

- (void)setSeeking:(BOOL)seeking {

    [super setSeeking:seeking];

    // Switch between enabling seek and stop goals so that the agent stops when not seeking.

    if (seeking) {

        [self.player.agent.behavior setWeight:1 forGoal:self.seekGoal];

        [self.player.agent.behavior setWeight:0 forGoal:self.stopGoal];

    }

    else {

        [self.player.agent.behavior setWeight:0 forGoal:self.seekGoal];

        [self.player.agent.behavior setWeight:1 forGoal:self.stopGoal];

    }

}

@end