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//
// Cart.m
// Cart Collect
//
// Created by Starla Insigna on 8/9/11.
// Copyright 2011 Four Island. All rights reserved.
//
#import "Cart.h"
@implementation Cart
@synthesize sprite, immobile, delegate, falling, boundedByScreen;
- (id)initWithSprite:(CCSprite*)m_sprite
{
self = [super init];
if (nil != self)
{
sprite = m_sprite;
immobile = NO;
falling = NO;
boundedByScreen = YES;
}
return self;
}
- (void)tick
{
if (!immobile)
{
// Move the cart based on acceleration gathered from accelerometer
CGPoint prevLoc = sprite.position;
if (boundedByScreen)
{
sprite.position = ccp(MIN(MAX(sprite.position.x+accelX, 16),464), sprite.position.y);
} else {
sprite.position = ccp(sprite.position.x+accelX, sprite.position.y);
}
if ((delegate != nil) && ([delegate respondsToSelector:@selector(cartIsObstructed:)]))
{
if ([delegate cartIsObstructed:self])
{
sprite.position = prevLoc;
}
}
if (falling)
{
if ((delegate != nil) && ([delegate respondsToSelector:@selector(cartShouldFall:)]))
{
int bottom = [delegate cartShouldFall:self];
sprite.position = ccp(sprite.position.x, MAX(bottom, sprite.position.y-8));
} else {
NSLog(@"Falling is set on a cart without a compatible game mode.");
}
}
}
}
- (void)accelerometer:(UIAccelerometer*)accelerometer didAccelerate:(UIAcceleration*)acceleration
{
static float prevY=0;
#define kFilterFactor 0.05f
float accelY = -((float) acceleration.y * kFilterFactor + (1- kFilterFactor)*prevY);
prevY = accelY;
accelX = accelY * 750;
}
@end
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