nuclear@0: #import "glview.h"
nuclear@0: #include "game.h"
nuclear@0: #include "screen.h"
nuclear@0: #include "logger.h"
nuclear@0: 
nuclear@0: unsigned int default_fbo;
nuclear@0: 
nuclear@0: static GLView *view;
nuclear@0: 
nuclear@0: void request_redisplay()
nuclear@0: {
nuclear@0: 	// TODO
nuclear@0: }
nuclear@0: 
nuclear@0: void swap_buffers()
nuclear@0: {
nuclear@0: 	if(view) {
nuclear@0: 		[view swap_buffers];
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: @implementation GLView
nuclear@0: 
nuclear@0: @synthesize animating;
nuclear@0: @dynamic anim_frame_interval;
nuclear@0: 
nuclear@0: // You must implement this method
nuclear@0: + (Class)layerClass
nuclear@0: {
nuclear@0: 	return [CAEAGLLayer class];
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: - (id)initWithFrame: (CGRect) frame
nuclear@0: {
nuclear@0: 	if((self = [super initWithFrame: frame]))
nuclear@0: 	{
nuclear@0: 		// Get the layer
nuclear@0: 		CAEAGLLayer *eaglLayer = (CAEAGLLayer*)self.layer;
nuclear@0: 
nuclear@0: 		//self.contentScaleFactor = 2.0;
nuclear@0: 
nuclear@0: 		eaglLayer.opaque = TRUE;
nuclear@0: 		eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:FALSE],
nuclear@0: 				kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8,
nuclear@0: 				kEAGLDrawablePropertyColorFormat, nil];
nuclear@0: 
nuclear@0: 		// initialize OpenGL ES context
nuclear@0: 		context = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2];
nuclear@0: 		if(!context || ![EAGLContext setCurrentContext: context]) {
nuclear@0: 			[self release];
nuclear@0: 			return self;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		// create the framebuffer
nuclear@0: 		glGenFramebuffers(1, &fbo);
nuclear@0: 		glBindFramebuffer(GL_FRAMEBUFFER, fbo);
nuclear@0: 
nuclear@0: 		glGenRenderbuffers(1, &rbuf_color);
nuclear@0: 		glBindRenderbuffer(GL_RENDERBUFFER, rbuf_color);
nuclear@0: 		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbuf_color);
nuclear@0: 
nuclear@0: 		glGenRenderbuffers(1, &rbuf_depth);
nuclear@0: 		glBindRenderbuffer(GL_RENDERBUFFER, rbuf_depth);
nuclear@0: 		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbuf_depth);
nuclear@0: 
nuclear@0: 		default_fbo = fbo;
nuclear@0: 
nuclear@0: 		animating = FALSE;
nuclear@0: 		display_link_supported = FALSE;
nuclear@0: 		anim_frame_interval = 1;
nuclear@0: 		display_link = nil;
nuclear@0: 		anim_timer = nil;
nuclear@0: 
nuclear@0: 		// A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer
nuclear@0: 		// class is used as fallback when it isn't available.
nuclear@0: 		NSString *reqSysVer = @"3.1";
nuclear@0: 		NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
nuclear@0: 		if([currSysVer compare: reqSysVer options: NSNumericSearch] != NSOrderedAscending) {
nuclear@0: 			display_link_supported = TRUE;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		self.multipleTouchEnabled = 1;
nuclear@0: 
nuclear@0: 		if(!game_init()) {
nuclear@0: 			exit(1);
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	view = self;
nuclear@0: 	return self;
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)drawView: (id)sender
nuclear@0: {
nuclear@0: 	game_display();
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)swap_buffers
nuclear@0: {
nuclear@0: 	glBindRenderbuffer(GL_RENDERBUFFER, rbuf_color);
nuclear@0: 	[context presentRenderbuffer: GL_RENDERBUFFER];
nuclear@0: }
nuclear@0: 
nuclear@0: - (BOOL)resize: (CAEAGLLayer*)layer
nuclear@0: {
nuclear@0: 	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
nuclear@0: 
nuclear@0: 	glBindRenderbuffer(GL_RENDERBUFFER, rbuf_color);
nuclear@0: 	[context renderbufferStorage: GL_RENDERBUFFER fromDrawable: layer];
nuclear@0: 	glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &xsz);
nuclear@0: 	glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &ysz);
nuclear@0: 
nuclear@0: 	glBindRenderbuffer(GL_RENDERBUFFER, rbuf_depth);
nuclear@0: 	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, xsz, ysz);
nuclear@0: 
nuclear@0: 	if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
nuclear@0: 		error_log("resize failed, framebuffer incomplete\n");
nuclear@0: 		return FALSE;
nuclear@0: 	}
nuclear@0: 	assert(glGetError() == GL_NO_ERROR);
nuclear@0: 
nuclear@0: 	game_reshape(xsz, ysz);
nuclear@0: 	return TRUE;
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)layoutSubviews
nuclear@0: {
nuclear@0: 	[self resize: (CAEAGLLayer*)self.layer];
nuclear@0: 	[self drawView:nil];
nuclear@0: }
nuclear@0: 
nuclear@0: - (NSInteger)anim_frame_interval
nuclear@0: {
nuclear@0: 	return anim_frame_interval;
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)setAnimationFrameInterval: (NSInteger)frameInterval
nuclear@0: {
nuclear@0: 	// Frame interval defines how many display frames must pass between each time the
nuclear@0: 	// display link fires. The display link will only fire 30 times a second when the
nuclear@0: 	// frame internal is two on a display that refreshes 60 times a second. The default
nuclear@0: 	// frame interval setting of one will fire 60 times a second when the display refreshes
nuclear@0: 	// at 60 times a second. A frame interval setting of less than one results in undefined
nuclear@0: 	// behavior.
nuclear@0: 	if(frameInterval >= 1) {
nuclear@0: 		anim_frame_interval = frameInterval;
nuclear@0: 
nuclear@0: 		if(animating) {
nuclear@0: 			[self stopAnimation];
nuclear@0: 			[self startAnimation];
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)startAnimation
nuclear@0: {
nuclear@0: 	if(!animating) {
nuclear@0: 		if(display_link_supported) {
nuclear@0: 			// CADisplayLink is API new to iPhone SDK 3.1. Compiling against earlier versions will result in a warning, but can be dismissed
nuclear@0: 			// if the system version runtime check for CADisplayLink exists in -initWithCoder:. The runtime check ensures this code will
nuclear@0: 			// not be called in system versions earlier than 3.1.
nuclear@0: 
nuclear@0: 			display_link = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget:self selector:@selector(drawView:)];
nuclear@0: 			[display_link setFrameInterval: anim_frame_interval];
nuclear@0: 			[display_link addToRunLoop: [NSRunLoop currentRunLoop] forMode: NSDefaultRunLoopMode];
nuclear@0: 		} else {
nuclear@0: 			anim_timer = [NSTimer scheduledTimerWithTimeInterval: (NSTimeInterval)((1.0 / 60.0) * anim_frame_interval)
nuclear@0: 					target: self selector: @selector(drawView:) userInfo: nil repeats: TRUE];
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		animating = TRUE;
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)stopAnimation
nuclear@0: {
nuclear@0: 	if(animating) {
nuclear@0: 		if(display_link_supported) {
nuclear@0: 			[display_link invalidate];
nuclear@0: 			display_link = nil;
nuclear@0: 		} else {
nuclear@0: 			[anim_timer invalidate];
nuclear@0: 			anim_timer = nil;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		animating = FALSE;
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)dealloc
nuclear@0: {
nuclear@0: 	game_cleanup();
nuclear@0: 
nuclear@0: 	if(fbo) {
nuclear@0: 		glDeleteFramebuffers(1, &fbo);
nuclear@0: 		fbo = 0;
nuclear@0: 		default_fbo = 0;
nuclear@0: 	}
nuclear@0: 	if(rbuf_color) {
nuclear@0: 		glDeleteRenderbuffers(1, &rbuf_color);
nuclear@0: 		rbuf_color = 0;
nuclear@0: 	}
nuclear@0: 	if(rbuf_depth) {
nuclear@0: 		glDeleteRenderbuffers(1, &rbuf_depth);
nuclear@0: 		rbuf_depth = 0;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	if([EAGLContext currentContext] == context) {
nuclear@0: 		[EAGLContext setCurrentContext: nil];
nuclear@0: 	}
nuclear@0: 	[context release];
nuclear@0: 	context = nil;
nuclear@0: 
nuclear@0: 	[super dealloc];
nuclear@0: }
nuclear@0: 
nuclear@0: #define MOUSEX(x)	((int)((x) * xsz / 320.0))
nuclear@0: #define MOUSEY(y)	((int)((y) * ysz / 480.0))
nuclear@0: static bool bn_pressed;
nuclear@0: 
nuclear@0: - (void)touchesBegan: (NSSet*)touches withEvent: (UIEvent*)event
nuclear@0: {
nuclear@0: 	UITouch *touch = [[touches allObjects] objectAtIndex: 0];
nuclear@0: 	CGPoint pt = [touch locationInView: self];
nuclear@0: 
nuclear@0: 	int x = MOUSEX(pt.x);
nuclear@0: 	int y = MOUSEY(pt.y);
nuclear@0: 	current_screen()->button(0, true, x, y);
nuclear@0: 
nuclear@0: 	bn_pressed = true;
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)touchesMoved: (NSSet*)touches withEvent: (UIEvent*)event
nuclear@0: {
nuclear@0: 	UITouch *touch = [[touches allObjects] objectAtIndex: 0];
nuclear@0: 	CGPoint pt = [touch locationInView: self];
nuclear@0: 
nuclear@0: 	int x = MOUSEX(pt.x);
nuclear@0: 	int y = MOUSEY(pt.y);
nuclear@0: 	current_screen()->motion(x, y, bn_pressed);
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)touchesEnded: (NSSet*)touches withEvent: (UIEvent*)event
nuclear@0: {
nuclear@0: 	UITouch *touch = [[touches allObjects] objectAtIndex: 0];
nuclear@0: 	CGPoint pt = [touch locationInView: self];
nuclear@0: 
nuclear@0: 	int x = MOUSEX(pt.x);
nuclear@0: 	int y = MOUSEY(pt.y);
nuclear@0: 	current_screen()->button(0, false, x, y);
nuclear@0: 	bn_pressed = false;
nuclear@0: }
nuclear@0: 
nuclear@0: - (void)touchesCancelled: (NSSet*)touches withEvent: (UIEvent*)event
nuclear@0: {
nuclear@0: 	[self touchesEnded: touches withEvent: event];
nuclear@0: }
nuclear@0: 
nuclear@0: @end