//

//  overlayViewController.m

//  HedgewarsMobile

//

//  Created by Vittorio on 16/03/10.

//  Copyright 2010 __MyCompanyName__. All rights reserved.

//

#import "OverlayViewController.h"

#import "SDL_uikitappdelegate.h"

#import "PascalImports.h"

#import "CGPointUtils.h"

#import "SDL_mouse.h"

@implementation OverlayViewController

-(void) didReceiveMemoryWarning {

	// Releases the view if it doesn't have a superview.

    [super didReceiveMemoryWarning];

	// Release any cached data, images, etc that aren't in use.

}

-(void) viewDidLoad {

    self.view.alpha = 0;

    // needed for rotation to work on os < 3.2

    self.view.center = CGPointMake(self.view.frame.size.height/2.0, self.view.frame.size.width/2.0);

    self.view.transform = CGAffineTransformRotate(self.view.transform, (M_PI/2.0));

    dimTimer = [[NSTimer alloc] initWithFireDate:[NSDate dateWithTimeIntervalSinceNow:6]

                                        interval:1000

                                          target:self

                                        selector:@selector(dimOverlay)

                                        userInfo:nil

                                         repeats:YES];

    // add timer too runloop, otherwise it doesn't work

    [[NSRunLoop currentRunLoop] addTimer:dimTimer forMode:NSDefaultRunLoopMode];

    // listen for dismissal of the popover (see below)x

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dismissPopover) name:@"dismissPopover" object:nil];

    // present the overlay after 2 seconds

    [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(showMenuAfterwards) userInfo:nil repeats:NO];

}

-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation {

    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);

}

-(void) viewDidUnload {

	[dimTimer invalidate];

}

-(void) dealloc {

    // dimTimer is autoreleased

    [super dealloc];

}

// draws the controller overlay after the sdl window has taken control

-(void) showMenuAfterwards {

    [[SDLUIKitDelegate sharedAppDelegate].uiwindow bringSubviewToFront:self.view];

	[UIView beginAnimations:@"showing overlay" context:NULL];

	[UIView setAnimationDuration:1];

	self.view.alpha = 1;

	[UIView commitAnimations];

}

// dim the overlay when there's no more input for a certain amount of time

-(IBAction) buttonReleased:(id) sender {

	HW_allKeysUp();

    [dimTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:2.7]];

}

// nice transition for dimming

-(void) dimOverlay {

    [UIView beginAnimations:@"overlay dim" context:NULL];

   	[UIView setAnimationDuration:0.6];

    self.view.alpha = 0.2;

	[UIView commitAnimations];

}

// set the overlay visible and put off the timer for enough time

-(void) activateOverlay {

    self.view.alpha = 1;

    [dimTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:1000]];

}

// issue certain action based on the tag of the button 

-(IBAction) buttonPressed:(id) sender {

    [self activateOverlay];

    UIButton *theButton = (UIButton *)sender;

    switch (theButton.tag) {

        case 0:

            HW_walkLeft();

            break;

        case 1:

            HW_walkRight();

            break;

        case 2:

            HW_aimUp();

            break;

        case 3:

            HW_aimDown();

            break;

        case 4:

            HW_shoot();

            break;

        case 5:

            HW_jump();

            break;

        case 6:

            HW_backjump();

            break;

        case 7:

            HW_tab();

            break;

        default:

            NSLog(@"Nope");

            break;

    }

}

#pragma mark -

#define kMinimumPinchDelta      50

#define kMinimumGestureLength	10

#define kMaximumVariance        3

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

	NSArray *twoTouches;

	UITouch *touch = [touches anyObject];

	switch ([touches count]) {

		case 1:

			gestureStartPoint = [touch locationInView:self.view];

			initialDistanceForPinching = 0;

			switch ([touch tapCount]) {

				case 1:

					NSLog(@"X:%d Y:%d", (int)gestureStartPoint.x, (int)gestureStartPoint.y );

					SDL_WarpMouseInWindow([SDLUIKitDelegate sharedAppDelegate].window, 

					HW_click();

					break;

				case 2:

					HW_ammoMenu();

					break;

				default:

					break;

			}

			break;

		case 2:

			if (2 == [touch tapCount]) {

				HW_zoomReset();

			}

			// pinching

			twoTouches = [touches allObjects];

			UITouch *first = [twoTouches objectAtIndex:0];

			UITouch *second = [twoTouches objectAtIndex:1];

			initialDistanceForPinching = distanceBetweenPoints([first locationInView:self.view], [second locationInView:self.view]);

			break;

		default:

			break;

	}

}

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

	initialDistanceForPinching = 0;

	gestureStartPoint.x = 0;

	gestureStartPoint.y = 0;

	HW_allKeysUp();

}

-(void) touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {

	// this can happen if the user puts more than 5 touches on the screen at once, or perhaps in other circumstances.

	[self touchesEnded:touches withEvent:event];

}

-(void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {

	NSArray *twoTouches;

	CGPoint currentPosition;

	UITouch *touch = [touches anyObject];

	switch ([touches count]) {

		case 1:

			currentPosition = [touch locationInView:self.view];

			// panning

			SDL_WarpMouseInWindow([SDLUIKitDelegate sharedAppDelegate].window, 

			// remember that we have x and y inverted

			/* temporarily disabling hog movements for camera panning testing

			CGFloat vertDiff = gestureStartPoint.x - currentPosition.x;

			CGFloat horizDiff = gestureStartPoint.y - currentPosition.y;

			CGFloat deltaX = fabsf(vertDiff);

			CGFloat deltaY = fabsf(horizDiff);

			if (deltaY >= kMinimumGestureLength && deltaX <= kMaximumVariance) {

				NSLog(@"Horizontal swipe detected, begX:%f curX:%f", gestureStartPoint.x, currentPosition.x);

				if (horizDiff > 0) HW_walkLeft();

				else HW_walkRight();

			} else if (deltaX >= kMinimumGestureLength && deltaY <= kMaximumVariance){

				NSLog(@"Vertical swipe detected, begY:%f curY:%f", gestureStartPoint.y, currentPosition.y);

				if (vertDiff < 0) HW_aimUp();

				else HW_aimDown();

			}

			*/

			break;

		case 2:

			twoTouches = [touches allObjects];

			UITouch *first = [twoTouches objectAtIndex:0];

			UITouch *second = [twoTouches objectAtIndex:1];

			CGFloat currentDistanceOfPinching = distanceBetweenPoints([first locationInView:self.view], [second locationInView:self.view]);

			if (0 == initialDistanceForPinching) 

				initialDistanceForPinching = currentDistanceOfPinching;

			if (currentDistanceOfPinching < initialDistanceForPinching + kMinimumPinchDelta)

				HW_zoomOut();

			else if (currentDistanceOfPinching > initialDistanceForPinching + kMinimumPinchDelta)

				HW_zoomIn();

			currentDistanceOfPinching = initialDistanceForPinching;

			break;

		default:

			break;

	}

}

@end