View difference between Paste ID: ze1DEEzs and RV57nKPX

 //
 //  Dice.m
 //  DiceRoller
 
-//  Created by Jacques Questiaux on 2012/04/17.
+
-//  Copyright (c) 2012 j.questiaux@gmail.com. All rights reserved.
+
 #import "d6.h"
 #import "d8.h"
 #import "d10.h"
 #import "d12.h"
 #import "d20.h"
 
 @interface Dice () {
 
     GLuint _vertexArray;
     GLuint _vertexBuffer;
     GLuint _indexBuffer;
     GLuint _colorBuffer;
     GLuint _normalBuffer;
 
     GLfloat *vertices;
     GLubyte *indices;
     GLfloat *normals;
     GLfloat *colors;
 
     GLubyte numVertices;
     GLubyte numIndices;
     GLubyte numNormals;
     GLubyte numColors;
 
     NSMutableArray *surfaceNormals;
 
     bool k;
 }
 
 
 - (void) rotateXInDegrees: (float) rot;
 - (void) rotateYInDegrees: (float) rot;
 - (void) makeSurfaceNormals;
 
 @end
 
 
 @implementation Dice
 
 @synthesize preD = _preD;
 @synthesize postD = _postD;
 @synthesize plusD = _plusD;
 @synthesize success = _success;
 
 @synthesize up = _up;
 @synthesize front = _front;
 @synthesize right = _right;
 @synthesize position =_position;
 
 @synthesize direction = _direction;
 
 @synthesize modelViewMatrix = _modelViewMatrix;
 
 - (id) initWithParams: (NSUInteger)preD: (NSUInteger)postD: (NSUInteger)plusD: (NSUInteger)success{
 
     if(self = [super init]){
 
         self.preD = preD;
         self.postD = postD;
         self.plusD = plusD;
         self.success = success;
 
         size = 75;
         friction = 0.95f;
 
         surfaceNormals = [[NSMutableArray alloc] init];
 
         return self;
     }
 
     return nil;
 }
 
 - (void) Context: (EAGLContext *) c Effect: (GLKBaseEffect *) e {
 
     NSLog(@"before context\n");
 
     self.right = GLKVector3Make(1, 0, 0);
     self.up = GLKVector3Make(0, 1, 0);
     self.front = GLKVector3Make(0, 0, 1);
 
     context = c;
     effect = e;
 
     k = true;
 
     NSLog(@"after context\n");
 
     [self setup];
 }
 
 - (void) setup{
 
     NSLog(@"before setup\n");
 
     //too lazy to swap to a switch statement
     if(self.postD == 4){
         vertices = d4vertices;
         numVertices = sizeof(d4vertices);
 
         indices = d4indices;
         numIndices = sizeof(d4indices);
 
         normals = d4normals;
         numNormals = sizeof(d4normals);
 
         colors = d4colors;
         numColors = sizeof(d4colors);
 
     }
     else if(self.postD == 6){
         vertices = d6vertices;
         numVertices = sizeof(d6vertices);
 
         indices = d6indices;
         numIndices = sizeof(d6indices);
 
         normals = d6normals;
         numNormals = sizeof(d6normals);
 
         colors = d6colors;
         numColors = sizeof(d6colors);
 
     }
     else if(self.postD == 8){
         vertices = d8vertices;
         numVertices = sizeof(d8vertices);
 
         indices = d8indices;
         numIndices = sizeof(d8indices);
 
         normals = d8normals;
         numNormals = sizeof(d8normals);
 
         colors = d8colors;
         numColors = sizeof(d8colors);
 
     }
     else if(self.postD == 10){
         vertices = d10vertices;
         numVertices = sizeof(d10vertices);
 
         indices = d10indices;
         numIndices = sizeof(d10indices);
 
         normals = d10normals;
         numNormals = sizeof(d10normals);
 
         colors = d10colors;
         numColors = sizeof(d10colors);
 
     }
     else if(self.postD == 12){
         vertices = d12vertices;
         numVertices = sizeof(d12vertices);
 
         indices = d12indices;
         numIndices = sizeof(d12indices);
 
         normals = d12normals;
         numNormals = sizeof(d12normals);
 
         colors = d12colors;
         numColors = sizeof(d12colors);
 
     }
     else {
         vertices = d20vertices;
         numVertices = sizeof(d20vertices);
 
         indices = d20indices;
         numIndices = sizeof(d20indices);
 
         normals = d20normals;
         numNormals = sizeof(d20normals);
 
         colors = d20colors;
         numColors = sizeof(d20colors);
 
     }
 
     NSLog(@"after postD\n");
 
     glGenVertexArraysOES(1, &_vertexArray);
     glBindVertexArrayOES(_vertexArray);
 
     glGenBuffers(1, &_indexBuffer);
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _indexBuffer);
     glBufferData(GL_ELEMENT_ARRAY_BUFFER, numIndices, indices, GL_STATIC_DRAW);
 
     glGenBuffers(1, &_vertexBuffer);
     glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
     glBufferData(GL_ARRAY_BUFFER, numVertices, vertices, GL_STATIC_DRAW);
 
     glEnableVertexAttribArray(GLKVertexAttribPosition);
     glVertexAttribPointer(GLKVertexAttribPosition, 3, GL_FLOAT, GL_FALSE, 0, 0);
 
     glGenBuffers(1, &_colorBuffer);
     glBindBuffer(GL_ARRAY_BUFFER, _colorBuffer);
     glBufferData(GL_ARRAY_BUFFER, numColors, colors, GL_STATIC_DRAW);
 
     glEnableVertexAttribArray(GLKVertexAttribColor);
     glVertexAttribPointer(GLKVertexAttribColor, 4, GL_FLOAT, GL_FALSE, 0, 0);
 
     glGenBuffers(1, &_normalBuffer);
     glBindBuffer(GL_ARRAY_BUFFER, _normalBuffer);
     glBufferData(GL_ARRAY_BUFFER, numNormals, normals, GL_STATIC_DRAW);
 
     glEnableVertexAttribArray(GLKVertexAttribNormal);
     glVertexAttribPointer(GLKVertexAttribNormal, 3, GL_FLOAT, GL_FALSE, 0, 0);
 
     glBindVertexArrayOES(0);
 
     NSLog(@"after setup\n");
 }
 
 - (void) tearDown {
 
 
     glDeleteBuffers(1, &_vertexBuffer);
     glDeleteBuffers(1, &_indexBuffer);
     glDeleteBuffers(1, &_colorBuffer);
     glDeleteBuffers(1, &_normalBuffer);
 }
 
 - (void) makeSurfaceNormals {
 
     int numElements = sizeof(normals)/sizeof(GLfloat);
 
     GLKVector3 down = GLKVector3Make(0, 0, -1);
 
     GLKVector3 currentClosestToDown;
 
     float closestDistance = 9999;
 
     float rollAmount = 1;
 
     for(int i = 0; i < numElements; i++){
 
         int index0 = indices[i*3];
         int index1 = indices[i*3+1];
         int index2 = indices[i*3+2];
 
         GLKVector3 vertNormal0 = GLKVector3Make(normals[index0], normals[index0+1], normals[index0+2]);
         GLKVector3 vertNormal1 = GLKVector3Make(normals[index1], normals[index1+1], normals[index1+2]);
         GLKVector3 vertNormal2 = GLKVector3Make(normals[index2], normals[index2+1], normals[index2+2]);
 
         GLKVector3 surfNormal = GLKMatrix4MultiplyVector3(mvm, GLKVector3Add(GLKVector3Add(vertNormal0, vertNormal1), vertNormal2));
 
         float distanceToDown = GLKVector3Length(GLKVector3Subtract(surfNormal, down));
 
         if(distanceToDown < closestDistance){
 
             closestDistance = distanceToDown;
             currentClosestToDown = surfNormal;
         }
 
     }
 
     GLKVector3 rollDirection;
 
     //rollAmount = (closestDistance*closestDistance);
 
     damp = logf(rollAmount+1);
 
 
     rollDirection = GLKVector3Subtract(currentClosestToDown, down);
     rollDirection = GLKVector3MultiplyScalar(GLKVector3Normalize(GLKVector3Make(rollDirection.x, rollDirection.y, 0)), 5/rollAmount);
 
     [self applyForceInDirection: GLKVector3Make(rollDirection.x*damp, rollDirection.y*damp, rollDirection.z*damp)];
 
 }
 
 - (void) update: (float) timeSinceLastUpdate{
 
     tslu = timeSinceLastUpdate;
 
     self.direction = GLKVector3MultiplyScalar(self.direction, friction);
 
     [self checkIfCollidedWithWalls];
 
     [self moveInDirection:self.direction];
 
     mvm = GLKMatrix4Make(self.right.x,      self.right.y,       self.right.z,       0,
                          self.up.x,         self.up.y,          self.up.z,          0,
                          self.front.x,      self.front.y,       self.front.z,       0,
                          self.position.x,   self.position.y,    self.position.z,    1);
 
     [self makeSurfaceNormals];
 }
 
 - (void) draw {
 
     effect.transform.modelviewMatrix = GLKMatrix4Multiply(self.modelViewMatrix, mvm);
 
 
     if(k){
         NSLog(@"before effect\n");
 
     }
 
     [effect prepareToDraw];
 
 
     if(k){
         NSLog(@"after effect\n");
         k = false;
     }
 
 
     glBindVertexArrayOES(_vertexArray);
     glDrawElements(GL_TRIANGLES, numIndices/sizeof(GLubyte), GL_UNSIGNED_BYTE, 0);
 
 }
 
 - (void) rotateXInDegrees:(float)rot{
 
     GLKMatrix3 temp = GLKMatrix3MakeRotation(GLKMathDegreesToRadians(rot), 1, 0, 0);
 
     self.right = GLKMatrix3MultiplyVector3(temp, self.right);
     self.up = GLKMatrix3MultiplyVector3(temp, self.up);
     self.front = GLKMatrix3MultiplyVector3(temp, self.front);
 
 }
 
 - (void) rotateYInDegrees:(float)rot{
 
     GLKMatrix3 temp = GLKMatrix3MakeRotation(GLKMathDegreesToRadians(rot), 0, 1, 0);
     self.right = GLKMatrix3MultiplyVector3(temp, self.right);
     self.up = GLKMatrix3MultiplyVector3(temp, self.up);
     self.front = GLKMatrix3MultiplyVector3(temp, self.front);
 
 }
 
 - (void) applyForceInDirection: (GLKVector3) dir {
 
     self.direction = GLKVector3Add(self.direction, dir);
 }
 
 - (void) moveInDirection: (GLKVector3) dir {
 
     previousPosition = self.position;
 
     self.position = GLKVector3Make(self.position.x + dir.x, self.position.y + dir.y, self.position.z + dir.z);
 
     [self rotateXInDegrees:-dir.y/3.14f];
     [self rotateYInDegrees:dir.x/3.14f];
 
 }
 
 - (BOOL) collidedWith: (Dice *) dice{
 
     float distance = GLKVector3Distance(self.position, dice.position);
 
     if(distance < size + dice->size){
 
         GLKVector3 newDirection = GLKVector3Normalize(GLKVector3Subtract(self.position, dice.position));
 
         float newSpeed = (GLKVector3Length(self.direction) + GLKVector3Length(dice.direction)) / 2;
 
         self.direction = GLKVector3MultiplyScalar(GLKVector3Make(newDirection.x, newDirection.y, newDirection.z), newSpeed * 0.75f);
 
         dice.direction = GLKVector3MultiplyScalar(GLKVector3Make(-newDirection.x, -newDirection.y, -newDirection.z), newSpeed * 0.75f);
 
         self.position = previousPosition;
 
         return true;
     }
 
 
     return false;
 }
 
 - (BOOL) checkIfCollidedWithWalls{
 
     BOOL didCollide = false;
 
     if(self.position.x - size < -500){
         self.position = GLKVector3Make(-500 + size, self.position.y, self.position.z);
         self.direction = GLKVector3Make(-self.direction.x, self.direction.y, self.direction.z);
         didCollide = true;
     }
 
     if (self.position.x + size > 500){
         self.position = GLKVector3Make(500 - size, self.position.y, self.position.z);
         self.direction = GLKVector3Make(-self.direction.x, self.direction.y, self.direction.z);
         didCollide = true;
     }
 
     if(self.position.y - size < -625){
         self.position = GLKVector3Make(self.position.x, -625 + size, self.position.z);
         self.direction = GLKVector3Make(self.direction.x, -self.direction.y, self.direction.z);
         didCollide = true;
     }
     if (self.position.y + size > 625){
         self.position = GLKVector3Make(self.position.x, 625 - size, self.position.z);
         self.direction = GLKVector3Make(self.direction.x, -self.direction.y, self.direction.z);
         didCollide = true;
     }
 
 
     return didCollide;
 }
 
 @end