AppUtils 常用函数总结(Cocos2d-x 3.9)

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1、随机函数

float AppUtils::randomFloat(float low, float high){//0.0-1.0float r = rand()/(RAND_MAX+0.1);return ((high+1) - low) * r + low;}

2、点击区域判断

CCRect AppUtils::boundingBoxForWorld(CCNode* node){CCRect rect = CCRectZero;if (node==NULL){return rect;}CCPoint anchorPoint = node->getAnchorPoint();CCSize widgetSize = node->boundingBox().size;CCPoint worldPosition = node->getPosition();worldPosition.x -= widgetSize.width*anchorPoint.x;worldPosition.y -= widgetSize.height*anchorPoint.y;if (node!=NULL){CCNode* parent = node->getParent();while (parent != NULL){float scaleX = parent->getScaleX();float scaleY = parent->getScaleY();float scaledWidth = widgetSize.width*scaleX;float scaledHeight = widgetSize.height*scaleY;worldPosition.x += (widgetSize.width - scaledWidth) / 2;worldPosition.y += (widgetSize.height - scaledHeight) / 2;widgetSize.width = scaledWidth;widgetSize.height = scaledHeight;worldPosition = worldPosition + parent->getBoundingBox().origin;parent = parent->getParent();}rect.origin = worldPosition;rect.size= widgetSize;return rect;}return rect;}

3、触摸方法模拟按钮的触摸点击

static void setColorForAll(Sprite* target, Color3B color= Color3B::GRAY);static void btnTouchBegin(Sprite* target, Point p, Color3B color = Color3B::GRAY);static void btnTouchMoved(Sprite* target, Point p, Color3B color = Color3B::WHITE);static bool btnTouchEnded(Sprite* target, Point p, Color3B color = Color3B::WHITE);

方法实现：

void AppUtils::setColorForAll(Sprite* target, Color3B color){if (target != NULL){target->setColor(color);Vector<Node*> children = target->getChildren();for (size_t i = 0; i < children.size(); i++){Sprite* item = (Sprite*)children.at(i);if (item != NULL){item->setColor(color);}}}}void AppUtils::btnTouchBegin(Sprite* target, Point p, Color3B color){if (target != NULL&&target->boundingBox().containsPoint(p)){setColorForAll(target, color);}}void AppUtils::btnTouchMoved(Sprite* target, Point p, Color3B color){if (target != NULL&&!target->boundingBox().containsPoint(p) && (target->getColor()== Color3B::GRAY)){setColorForAll(target, color);}}bool AppUtils::btnTouchEnded(Sprite* target, Point p, Color3B color){if (target != NULL&&target->boundingBox().containsPoint(p) && (Color3B::GRAY==target->getColor())){setColorForAll(target, color);return true;}return false;}

4、android下输出log常用宏

#pragma once#include "cocos2d.h"USING_NS_CC;#if !defined(COCOS2D_DEBUG) || COCOS2D_DEBUG == 0#define LOG_DEBUG(...)       do {} while (0)#define LOG_ERROR(...)   do {} while (0)#define LOG_INFO(...)  do {} while (0)#define LOG_WARN(...)   do {} while (0)#elif (COCOS2D_DEBUG == 1&&(CC_TARGET_PLATFORM == CC_PLATFORM_WIN32))#define LOG_DEBUG(__TAG__,format, ...)log(__TAG__":"##format, ##__VA_ARGS__)#define LOG_ERROR(__TAG__,format, ...)log(__TAG__":"##format, ##__VA_ARGS__)#define LOG_INFO(__TAG__,format, ...)log(__TAG__":"##format, ##__VA_ARGS__)#define LOG_WARN(__TAG__,format, ...)log(__TAG__":"##format, ##__VA_ARGS__)#elif (COCOS2D_DEBUG == 1&&(CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID))#define LOG_DEBUG( __TAG__, ...) __android_log_print(ANDROID_LOG_DEBUG, __TAG__, __VA_ARGS__)  #define LOG_ERROR( __TAG__, ...) __android_log_print(ANDROID_LOG_ERROR, __TAG__, __VA_ARGS__)  #define LOG_INFO( __TAG__, ...) __android_log_print(ANDROID_LOG_INFO, __TAG__, __VA_ARGS__)  #define LOG_WARN( __TAG__, ...) __android_log_print(ANDROID_LOG_WARN, __TAG__, __VA_ARGS__) #endif // COCOS2D_DEBUG

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