--- /dev/null
+//
+// Box2DView.mm
+// Box2D OpenGL View
+//
+// Box2D iPhone port by Simon Oliver - http://www.simonoliver.com - http://www.handcircus.com
+//
+
+#import <QuartzCore/QuartzCore.h>
+#import <OpenGLES/EAGLDrawable.h>
+
+#import "Box2DView.h"
+
+#define USE_DEPTH_BUFFER 0
+#define kAccelerometerFrequency 30
+#define FRAMES_BETWEEN_PRESSES_FOR_DOUBLE_CLICK 10
+
+Settings settings;
+
+// A class extension to declare private methods
+@interface Box2DView ()
+
+@property (nonatomic, retain) EAGLContext *context;
+@property (nonatomic, assign) NSTimer *animationTimer;
+
+- (BOOL) createFramebuffer;
+- (void) destroyFramebuffer;
+
+@end
+
+
+@implementation Box2DView
+
+@synthesize context;
+@synthesize animationTimer;
+@synthesize animationInterval;
+@synthesize delegate=_delegate;
+
+// You must implement this method
++ (Class)layerClass {
+ return [CAEAGLLayer class];
+}
+
+
+//The GL view is stored in the nib file. When it's unarchived it's sent -initWithCoder:
+- (id)initWithCoder:(NSCoder*)coder {
+
+ if ((self = [super initWithCoder:coder])) {
+ // Get the layer
+ CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
+
+ eaglLayer.opaque = YES;
+ eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
+ [NSNumber numberWithBool:NO], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil];
+
+ context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1];
+
+ if (!context || ![EAGLContext setCurrentContext:context]) {
+ [self release];
+ return nil;
+ }
+
+ animationInterval = 1.0 / 60.0;
+ sceneScale=10.0f;
+ positionOffset=CGPointMake(0, 0);
+ lastWorldTouch=CGPointMake(0, 0);
+
+ [[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / kAccelerometerFrequency)];
+ [[UIAccelerometer sharedAccelerometer] setDelegate:self];
+ }
+
+
+ return self;
+}
+
+-(void) selectTestEntry:(int) testIndex
+{
+ // Destroy existing scene
+ delete test;
+
+ entry = g_testEntries + testIndex;
+ test = entry->createFcn();
+
+ doubleClickValidCountdown=0;
+
+ sceneScale=10.0f;
+ positionOffset=CGPointMake(0, 0);
+ lastWorldTouch=CGPointMake(0, 0);
+}
+
+
+
+- (void)drawView {
+
+
+
+ if (doubleClickValidCountdown>0) doubleClickValidCountdown--;
+
+ [EAGLContext setCurrentContext:context];
+
+ glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
+ glViewport(0, 0, backingWidth, backingHeight);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+ glOrthof(-sceneScale, sceneScale, -sceneScale*1.5f, sceneScale*1.5f, -1.0f, 1.0f);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(positionOffset.x, positionOffset.y,0);
+ glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ test->Step(&settings);
+
+ glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
+ [context presentRenderbuffer:GL_RENDERBUFFER_OES];
+}
+
+
+- (void)layoutSubviews {
+ [EAGLContext setCurrentContext:context];
+ [self destroyFramebuffer];
+ [self createFramebuffer];
+ [self drawView];
+}
+
+
+- (BOOL)createFramebuffer {
+
+ glGenFramebuffersOES(1, &viewFramebuffer);
+ glGenRenderbuffersOES(1, &viewRenderbuffer);
+
+ glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
+ glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
+ [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer*)self.layer];
+ glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer);
+
+ glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
+ glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
+
+ if (USE_DEPTH_BUFFER) {
+ glGenRenderbuffersOES(1, &depthRenderbuffer);
+ glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
+ glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);
+ glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer);
+ }
+
+ if(glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) {
+ NSLog(@"failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
+ return NO;
+ }
+
+ return YES;
+}
+
+
+- (void)destroyFramebuffer {
+
+ glDeleteFramebuffersOES(1, &viewFramebuffer);
+ viewFramebuffer = 0;
+ glDeleteRenderbuffersOES(1, &viewRenderbuffer);
+ viewRenderbuffer = 0;
+
+ if(depthRenderbuffer) {
+ glDeleteRenderbuffersOES(1, &depthRenderbuffer);
+ depthRenderbuffer = 0;
+ }
+}
+
+
+- (void)startAnimation {
+ self.animationTimer = [NSTimer scheduledTimerWithTimeInterval:animationInterval target:self selector:@selector(drawView) userInfo:nil repeats:YES];
+}
+
+
+- (void)stopAnimation {
+ self.animationTimer = nil;
+}
+
+
+- (void)setAnimationTimer:(NSTimer *)newTimer {
+ [animationTimer invalidate];
+ animationTimer = newTimer;
+}
+
+
+- (void)setAnimationInterval:(NSTimeInterval)interval {
+
+ animationInterval = interval;
+ if (animationTimer) {
+ [self stopAnimation];
+ [self startAnimation];
+ }
+}
+
+
+- (void)dealloc {
+
+ [self stopAnimation];
+
+ if ([EAGLContext currentContext] == context) {
+ [EAGLContext setCurrentContext:nil];
+ }
+
+ [context release];
+ [super dealloc];
+}
+
+-(CGPoint) screenSpaceToWorldSpace:(CGPoint) screenLocation
+{
+ screenLocation.x-=160;
+ screenLocation.y-=240;
+ screenLocation.x/=160;
+ screenLocation.y/=160;
+ screenLocation.x*=sceneScale;
+ screenLocation.y*=-sceneScale;
+
+ screenLocation.x-=positionOffset.x;
+ screenLocation.y-=positionOffset.y;
+ return screenLocation;
+}
+
+- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
+{
+
+ if (doubleClickValidCountdown>0)
+ {
+ [_delegate leaveTest];
+ return;
+ }
+
+ doubleClickValidCountdown=FRAMES_BETWEEN_PRESSES_FOR_DOUBLE_CLICK;
+
+
+ panning=false;
+ for (UITouch *touch in touches)
+ {
+ CGPoint touchLocation=[touch locationInView:self];
+ CGPoint worldPosition=[self screenSpaceToWorldSpace:touchLocation];
+ //printf("Screen touched %f,%f -> %f,%f\n",touchLocation.x,touchLocation.y,worldPosition.x,worldPosition.y);
+ lastScreenTouch=touchLocation;
+ lastWorldTouch=worldPosition;
+ test->MouseDown(b2Vec2(lastWorldTouch.x,lastWorldTouch.y));
+
+ if (!test->m_mouseJoint) panning=true;
+ }
+}
+
+- (void) touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event
+{
+ for (UITouch *touch in touches)
+ {
+ CGPoint touchLocation=[touch locationInView:self];
+ CGPoint worldPosition=[self screenSpaceToWorldSpace:touchLocation];
+ //printf("Screen touched %f,%f -> %f,%f\n",touchLocation.x,touchLocation.y,worldPosition.x,worldPosition.y);
+
+
+ CGPoint screenDistanceMoved=CGPointMake(touchLocation.x-lastScreenTouch.x,touchLocation.y-lastScreenTouch.y);
+ if (panning)
+ {
+ screenDistanceMoved.x/=160;
+ screenDistanceMoved.y/=160;
+ screenDistanceMoved.x*=sceneScale;
+ screenDistanceMoved.y*=-sceneScale;
+ positionOffset.x+=screenDistanceMoved.x;
+ positionOffset.y+=screenDistanceMoved.y;
+ }
+
+ lastScreenTouch=touchLocation;
+ lastWorldTouch=worldPosition;
+ test->MouseMove(b2Vec2(lastWorldTouch.x,lastWorldTouch.y));
+
+ }
+}
+- (void) touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event
+{
+ test->MouseUp(b2Vec2(lastWorldTouch.x,lastWorldTouch.y));
+}
+
+- (void) accelerometer:(UIAccelerometer*)accelerometer didAccelerate:(UIAcceleration*)acceleration
+{
+ // Only run for valid values
+ if (acceleration.y!=0 && acceleration.x!=0)
+ {
+ if (test) test->SetGravity(acceleration.x,acceleration.y);
+ }
+}
+
+@end
projects / tanks-ios.git / commitdiff