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+//
+//  JumpGameMode.m
+//  Cart Collect
+//
+//  Created by Starla Insigna on 8/17/11.
+//  Copyright 2011 Four Island. All rights reserved.
+//
+
+#import "JumpGameMode.h"
+
+#define kMinimumGestureLength  50
+
+@implementation JumpGameMode
+
+- (id)init
+{
+    self = [super init];
+    
+    if (nil != self)
+    {
+        water = [CCSprite spriteWithFile:@"water.png"];
+        water.position = ccp(240, -80);
+        [self addChild:water];
+        
+        self.isTouchEnabled = YES;
+        
+        waterTick = 0;
+        wave = NO;
+    }
+    
+    return self;
+}
+
+- (void)onEnterTransitionDidFinish
+{
+    [super onEnterTransitionDidFinish];
+    
+    [self scheduleDelayedAction:^{
+        wave = YES;
+    } delay:3.0f];
+}
+
+- (void)tick:(ccTime)dt
+{
+    [super tick:dt];
+    
+    if (wave)
+    {
+        waterTick++;
+        
+        water.position = ccp(240, 160 * sin(waterTick / (36 * M_PI)) - 80);
+        
+        if (waterTick == 180)
+        {
+            wave = NO;
+            
+            [self scheduleDelayedAction:^{
+                wave = YES;
+            } delay:10.0f];
+        } else if (waterTick == 360)
+        {
+            wave = NO;
+            waterTick = 0;
+        }
+    }
+    
+    if (jump)
+    {
+        jumpTick++;
+        
+        cart.sprite.position = ccp(cart.sprite.position.x, MAX(100 * sin(jumpTick / (2 * M_PI)) + 22, water.position.y+80+11));
+        
+        if (jumpTick == 20)
+        {
+            jump = NO;
+            jumpTick = 0;
+        }
+    } else {
+        cart.sprite.position = ccp(cart.sprite.position.x, MAX(22, water.position.y+80+11));
+    }
+}
+
+- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    UITouch* touch = [touches anyObject];
+    gestureStartPoint = [touch locationInView:nil];
+}
+
+- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    UITouch* touch = [touches anyObject];
+    CGPoint gestureCurrentPosition = [touch locationInView:nil];
+    CGFloat angle = atan2f(gestureCurrentPosition.y - gestureStartPoint.y, gestureCurrentPosition.x - gestureStartPoint.x);
+    CGFloat distance = sqrt(powf((gestureCurrentPosition.x - gestureStartPoint.x),2) + powf((gestureCurrentPosition.y - gestureStartPoint.y),2));
+    
+    if ((distance >= kMinimumGestureLength) && (angle >= expectedAngle - M_PI_4) && (angle <= expectedAngle + M_PI_4) && (cart.sprite.position.y == 22))
+    {
+        jump = YES;
+    }
+}
+
+- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
+{
+    [super accelerometer:accelerometer didAccelerate:acceleration];
+    
+    expectedAngle = acceleration.y*M_PI_2;
+}
+
+@end