/Classes/FadeDemo.m
Objective C | 354 lines | 237 code | 61 blank | 56 comment | 18 complexity | e570ec9bc39bce7d57f640695c82b02c MD5 | raw file
1// 2// FadeDemo.m 3// ObjectAL 4// 5// Created by Karl Stenerud on 10-08-17. 6// 7 8#import "FadeDemo.h" 9#import "MainScene.h" 10#import "CCLayer+Scene.h" 11#import "ImageButton.h" 12#import "ImageAndLabelButton.h" 13#import "ObjectAL.h" 14#import "CCLayer+AudioPanel.h" 15 16#define kSpaceBetweenButtons 40 17#define kStartY 160 18 19@interface FadeDemo (Private) 20 21/** Build the user interface. */ 22- (void) buildUI; 23 24/** Start/stop the background track. */ 25- (void) onBackgroundPlayStop:(LampButton*) button; 26 27/** Fade out the background track. */ 28- (void) onBackgroundFadeOut:(LampButton*) button; 29 30/** Fade in the background track. */ 31- (void) onBackgroundFadeIn:(LampButton*) button; 32 33/** Called when the fade completes. */ 34- (void) onBackgroundFadeComplete:(id) sender; 35 36/** Start/stop the OpenAL source. */ 37- (void) onObjectALPlayStop:(LampButton*) button; 38 39/** Fade the source out. */ 40- (void) onObjectALFadeOut:(LampButton*) button; 41 42/** Fade the source in. */ 43- (void) onObjectALFadeIn:(LampButton*) button; 44 45/** Called when the fade completes. */ 46- (void) onObjectALFadeComplete:(id) sender; 47 48/** Exit the demo. */ 49- (void) onExitPressed; 50 51@end 52 53@implementation FadeDemo 54 55- (id) init 56{ 57 if(nil != (self = [super initWithColor:ccc4(0, 0, 0, 0)])) 58 { 59 [self buildUI]; 60 } 61 return self; 62} 63 64- (void) buildUI 65{ 66 [self buildAudioPanelWithTSeparator]; 67 [self addPanelTitle:@"Fading"]; 68 [self addPanelLine1:@"Click Start, then use fade buttons"]; 69 [self addPanelLine2:@"to start or cancel a fade."]; 70 71 CGSize screenSize = [[CCDirector sharedDirector] winSize]; 72 CGPoint center = ccp(screenSize.width/2, screenSize.height/2); 73 74 LampButton* button; 75 CCLabel* label; 76 77 CGPoint pos = ccp(60, screenSize.height - kStartY); 78 79 label = [CCLabel labelWithString:@"ALSource" fontName:@"Helvetica-Bold" fontSize:24]; 80 label.anchorPoint = ccp(0, 0.5f); 81 label.position = ccp(pos.x+10, pos.y); 82 [self addChild:label]; 83 84 pos.y -= kSpaceBetweenButtons; 85 86 button = [LampButton buttonWithText:@"Start/Stop" 87 font:@"Helvetica" 88 size:20 89 lampOnLeft:YES 90 target:self 91 selector:@selector(onObjectALPlayStop:)]; 92 button.anchorPoint = ccp(0, 0.5f); 93 button.position = pos; 94 [self addChild:button]; 95 startStopSourceButton = button; 96 97 pos.y -= kSpaceBetweenButtons; 98 99 button = [LampButton buttonWithText:@"Fade Out" 100 font:@"Helvetica" 101 size:20 102 lampOnLeft:YES 103 target:self 104 selector:@selector(onObjectALFadeOut:)]; 105 button.anchorPoint = ccp(0, 0.5f); 106 button.position = pos; 107 [self addChild:button]; 108 fadeOutSourceButton = button; 109 110 pos.y -= kSpaceBetweenButtons; 111 112 button = [LampButton buttonWithText:@"Fade In" 113 font:@"Helvetica" 114 size:20 115 lampOnLeft:YES 116 target:self 117 selector:@selector(onObjectALFadeIn:)]; 118 button.anchorPoint = ccp(0, 0.5f); 119 button.position = pos; 120 [self addChild:button]; 121 fadeInSourceButton = button; 122 123 124 pos = ccp(center.x+40, screenSize.height - kStartY); 125 126 label = [CCLabel labelWithString:@"AudioTrack" fontName:@"Helvetica-Bold" fontSize:24]; 127 label.anchorPoint = ccp(0, 0.5f); 128 label.position = ccp(pos.x+10, pos.y); 129 [self addChild:label]; 130 131 pos.y -= kSpaceBetweenButtons; 132 133 button = [LampButton buttonWithText:@"Start/Stop" 134 font:@"Helvetica" 135 size:20 136 lampOnLeft:YES 137 target:self 138 selector:@selector(onBackgroundPlayStop:)]; 139 button.anchorPoint = ccp(0, 0.5f); 140 button.position = pos; 141 [self addChild:button]; 142 startStopTrackButton = button; 143 144 pos.y -= kSpaceBetweenButtons; 145 146 button = [LampButton buttonWithText:@"Fade Out" 147 font:@"Helvetica" 148 size:20 149 lampOnLeft:YES 150 target:self 151 selector:@selector(onBackgroundFadeOut:)]; 152 button.anchorPoint = ccp(0, 0.5f); 153 button.position = pos; 154 [self addChild:button]; 155 fadeOutTrackButton = button; 156 157 pos.y -= kSpaceBetweenButtons; 158 159 button = [LampButton buttonWithText:@"Fade In" 160 font:@"Helvetica" 161 size:20 162 lampOnLeft:YES 163 target:self 164 selector:@selector(onBackgroundFadeIn:)]; 165 button.anchorPoint = ccp(0, 0.5f); 166 button.position = pos; 167 [self addChild:button]; 168 fadeInTrackButton = button; 169 170 171 // Exit button 172 button = [ImageButton buttonWithImageFile:@"Exit.png" target:self selector:@selector(onExitPressed)]; 173 button.anchorPoint = ccp(1,1); 174 button.position = ccp(screenSize.width, screenSize.height); 175 [self addChild:button z:250]; 176} 177 178- (void) onEnterTransitionDidFinish 179{ 180 // Initialize the OpenAL device and context here instead of in init so that 181 // it doesn't happen prematurely. 182 [OALSimpleAudio sharedInstance]; 183} 184 185- (void) onBackgroundPlayStop:(LampButton*) button 186{ 187 [[OALSimpleAudio sharedInstance].backgroundTrack stopFade]; 188 fadeInTrackButton.isOn = NO; 189 fadeOutTrackButton.isOn = NO; 190 191 if(button.isOn) 192 { 193 [OALSimpleAudio sharedInstance].bgVolume = 1.0f; 194 [[OALSimpleAudio sharedInstance] playBg:@"ColdFunk.caf" loop:YES]; 195 } 196 else 197 { 198 [[OALSimpleAudio sharedInstance] stopBg]; 199 } 200} 201 202- (void) onBackgroundFadeOut:(LampButton*) button 203{ 204 fadeInTrackButton.isOn = NO; 205 [[OALSimpleAudio sharedInstance].backgroundTrack stopFade]; 206 207 if([OALSimpleAudio sharedInstance].bgPlaying && [OALSimpleAudio sharedInstance].bgVolume > 0.0f) 208 { 209 if(button.isOn) 210 { 211 [[OALSimpleAudio sharedInstance].backgroundTrack fadeTo:0.0f duration:1.0f target:self selector:@selector(onBackgroundFadeComplete:)]; 212 } 213 214 // Alternatively, you could do this: 215 // OALAction* action = [OALSequentialActions actions: 216 // [OALGainAction actionWithDuration:1.0 endValue:0.0], 217 // [OALCall actionWithCallTarget:self selector:@selector(onBackgroundFadeComplete:)], 218 // nil]; 219 // [action runWithTarget:[OALSimpleAudio sharedInstance].backgroundTrack]; 220 // 221 // You could also specify a function like this: 222 // [OALGainAction actionWithDuration:1.0 endValue:0.0 function:[OALLogarithmicFunction function]]; 223 } 224 else 225 { 226 button.isOn = NO; 227 } 228} 229 230- (void) onBackgroundFadeIn:(LampButton*) button 231{ 232 fadeOutTrackButton.isOn = NO; 233 [[OALSimpleAudio sharedInstance].backgroundTrack stopFade]; 234 235 if([OALSimpleAudio sharedInstance].bgPlaying && [OALSimpleAudio sharedInstance].bgVolume < 1.0f) 236 { 237 if(button.isOn) 238 { 239 [[OALSimpleAudio sharedInstance].backgroundTrack fadeTo:1.0f duration:1.0f target:self selector:@selector(onBackgroundFadeComplete:)]; 240 } 241 242 // Alternatively, you could do this: 243 // OALAction* action = [OALSequentialActions actions: 244 // [OALGainAction actionWithDuration:1.0 endValue:1.0], 245 // [OALCall actionWithCallTarget:self selector:@selector(onBackgroundFadeComplete:)], 246 // nil]; 247 // [action runWithTarget:[OALSimpleAudio sharedInstance].backgroundTrack]; 248 // 249 // You could also specify a function like this: 250 // [OALGainAction actionWithDuration:1.0 endValue:1.0 function:[OALLogarithmicFunction function]]; 251 } 252 else 253 { 254 button.isOn = NO; 255 } 256} 257 258- (void) onBackgroundFadeComplete:(id) sender 259{ 260 fadeInTrackButton.isOn = NO; 261 fadeOutTrackButton.isOn = NO; 262} 263 264 265- (void) onObjectALPlayStop:(LampButton*) button 266{ 267 [source stopFade]; 268 fadeInSourceButton.isOn = NO; 269 fadeOutSourceButton.isOn = NO; 270 271 if(button.isOn) 272 { 273 source = [[OALSimpleAudio sharedInstance] playEffect:@"HappyAlley.caf" loop:YES]; 274 } 275 else 276 { 277 [source stop]; 278 source = nil; 279 } 280} 281 282- (void) onObjectALFadeOut:(LampButton*) button 283{ 284 fadeInSourceButton.isOn = NO; 285 [source stopFade]; 286 287 if(nil != source && source.volume > 0.0f) 288 { 289 if(button.isOn) 290 { 291 [source fadeTo:0.0f duration:1.0f target:self selector:@selector(onObjectALFadeComplete:)]; 292 } 293 294 // Alternatively, you could do this: 295 // OALAction* action = [OALSequentialActions actions: 296 // [OALGainAction actionWithDuration:1.0 endValue:0.0], 297 // [OALCall actionWithCallTarget:self selector:@selector(onObjectALFadeComplete:)], 298 // nil]; 299 // [action runWithTarget:source]; 300 // 301 // You could also specify a function like this: 302 // [OALGainAction actionWithDuration:1.0 endValue:0.0 function:[OALLogarithmicFunction function]]; 303 } 304 else 305 { 306 button.isOn = NO; 307 } 308} 309 310- (void) onObjectALFadeIn:(LampButton*) button 311{ 312 fadeOutSourceButton.isOn = NO; 313 [source stopFade]; 314 315 if(nil != source && source.volume < 1.0f) 316 { 317 if(button.isOn) 318 { 319 [source fadeTo:1.0f duration:1.0f target:self selector:@selector(onObjectALFadeComplete:)]; 320 } 321 322 // Alternatively, you could do this: 323 // OALAction* action = [OALSequentialActions actions: 324 // [OALGainAction actionWithDuration:1.0 endValue:1.0], 325 // [OALCall actionWithCallTarget:self selector:@selector(onObjectALFadeComplete:)], 326 // nil]; 327 // [action runWithTarget:source]; 328 // 329 // You could also specify a function like this: 330 // [OALGainAction actionWithDuration:1.0 endValue:1.0 function:[OALLogarithmicFunction function]]; 331 } 332 else 333 { 334 button.isOn = NO; 335 } 336} 337 338- (void) onObjectALFadeComplete:(id) sender 339{ 340 fadeInSourceButton.isOn = NO; 341 fadeOutSourceButton.isOn = NO; 342} 343 344- (void) onExitPressed 345{ 346 // These are needed when using cocos2d actions since the its action engine is less forgiving. 347 [[OALSimpleAudio sharedInstance].backgroundTrack stopActions]; 348 [source stopActions]; 349 350 self.isTouchEnabled = NO; 351 [[CCDirector sharedDirector] replaceScene:[MainLayer scene]]; 352} 353 354@end