数据结构采用双向循环链表。由候选角色组成链表的节点，将链表中的节点在屏幕上按照椭圆分布。
.h:
1 //链表节点——候选角色
2 class CandidateRole :public CCNode{
3 public:
4 CandidateRole();
5 ~CandidateRole();
6 virtual bool init(const char* name);
7 static CandidateRole* create(const char* name);
8 CandidateRole* mpNextRole; //节点右面角色的指针
9 CandidateRole* mpForeRole; //..左..........
10
11 void setPositionIndex(int );
12 int getPositionIndex();
13
14 int mDistance; //到椭圆最低点的距离
15 int mPositionIndex; //节点在链表中的序号
16 int mNextPositionX;
17 int mNextPositionY;
18 int mColorR;
19 int mColorG;
20 int mColorB;
21 CCArmature* mpArmature;
22 bool mbIsSelected; // 是否被选中
23
24 };
25
26
27 //由候选角色组成的链表，在屏幕上成椭圆分布
28 class CircleStage :public CCNode{
29
30 public:
31 CircleStage();
32 ~CircleStage();
33 virtual bool init();
34
35 CREATE_FUNC(CircleStage);
36 void addRole(CandidateRole *); //添加一个角色到链表
37 void changeToNext(); //顺时针旋转
38 void changeToFore(); //逆时针旋转
39
40 bool isOnAction();
41 void actionEnd();
42
43 private:
44 bool mbOnAction;
45 int mRoleNum;
46 CandidateRole* mpCurrentRole; //操作链表用的指针
47 CandidateRole* mpHead;
48 CandidateRole* mpLast;
49 CandidateRole* mpSelectRole; //被选中的角色，在椭圆最低点
50 int mCircleA; //椭圆的a
51 int mCircleB; //椭圆的b
52 void updateColor(); //更新每个节点的明暗，越远越暗
53 void updateZorders(); //更新遮盖关系
54 void updateZordersCallBack();
55 void updateDistances(); //更新每个节点到中央节点的距离
56 void initAppearance(); //初始化颜色和缩放
57
58 };
.cpp:
1 CandidateRole::CandidateRole()
2 {
3
4 }
5 CandidateRole::~CandidateRole()
6 {
7
8 }
9 bool CandidateRole::init(const char* name)
10 {
11
12 mPositionIndex=0;
13 mbIsSelected=false;
14 mDistance=0;
15 mColorB=255;
16 mColorG=255;
17 mColorR=255;
18
19 mpArmature = CCArmature::create(name);
20 this->addChild(mpArmature);
21
22 return true;
23 }
24
25 CandidateRole* CandidateRole::create(const char* name)
26 {
27 CandidateRole* pRet = new CandidateRole();
28 if (pRet && pRet->init(name))
29 {
30 pRet->autorelease();
31 }
32 else
33 {
34 CC_SAFE_DELETE(pRet);
35 }
36 return pRet;
37 }
38
39 void CandidateRole::setPositionIndex(int index)
40 {
41 mPositionIndex=index;
42 }
43
44 int CandidateRole::getPositionIndex()
45 {
46 return mPositionIndex;
47
48 }
49
50 CircleStage::CircleStage()
51 {
52
53 }
54
55 CircleStage::~CircleStage()
56 {
57
58 }
59
60 bool CircleStage::init()
61 {
62
63 mCircleA=ScreenWidth*0.4;
64 mCircleB=80;
65 mRoleNum=0;
66 mpHead=NULL;
67 mbOnAction=false;
68 for(int i=0;i<8;i++)
69 {
70 CandidateRole* role=CandidateRole::create("role");
71 this->addRole(role);
72
73 }
74 updateDistances();
75 updateZorders();
76 initAppearance();
77 return true;
78
79 }
80 void CircleStage::updateColor()
81 {
82 mpCurrentRole=mpSelectRole;
83 for (int i=0;i<mRoleNum;i++)
84 {
85 mpCurrentRole->mColorR=255;
86 mpCurrentRole->mColorG=255;
87 mpCurrentRole->mColorB=255;
88 for (int j=0;j<mpCurrentRole->mDistance;j++)
89 {
90
91 mpCurrentRole->mColorR*=0.6;
92 mpCurrentRole->mColorG*=0.6;
93 mpCurrentRole->mColorB*=0.6;
94 }
95 mpCurrentRole->mpArmature->setColor(ccc3(mpCurrentRole->mColorR,mpCurrentRole->mColorG,mpCurrentRole->mColorB));
96 mpCurrentRole=mpCurrentRole->mpNextRole;
97 }
98 }
99
100 void CircleStage::updateDistances()
101 {
102 mpCurrentRole=mpSelectRole;
103 int distance=0;
104 for (int i=0;i<=mRoleNum/2;i++)
105 {
106 mpCurrentRole->mDistance=distance;
107 ++distance;
108 mpCurrentRole=mpCurrentRole->mpNextRole;
109
110 }
111 mpCurrentRole=mpSelectRole;
112 distance=0;
113 for (int i=0;i<=mRoleNum/2;i++)
114 {
115 mpCurrentRole->mDistance=distance;
116 ++distance;
117 mpCurrentRole=mpCurrentRole->mpForeRole;
118 }
119
120 mpSelectRole->mDistance=0;
121 }
122 void CircleStage::initAppearance()
123 {
124 mpCurrentRole=mpSelectRole;
125
126 for (int i=0;i<mRoleNum;i++)
127 {
128 double scale=1;
129
130 for (int j=0;j<mpCurrentRole->mDistance;j++)
131 {
132 scale*=0.8;
133 mpCurrentRole->mColorR*=0.6;
134 mpCurrentRole->mColorG*=0.6;
135 mpCurrentRole->mColorB*=0.6;
136 }
137 mpCurrentRole->setScale(scale);
138
139 mpCurrentRole->mpArmature->setColor(ccc3(mpCurrentRole->mColorR,mpCurrentRole->mColorG,mpCurrentRole->mColorB));
140 mpCurrentRole=mpCurrentRole->mpNextRole;
141 }
142 mpSelectRole->setScale(1.0f);
143
144 }
145
146 void CircleStage::updateZorders()
147 {
148 mpSelectRole->setZOrder(mRoleNum);
149 mpSelectRole->mDistance=0;
150 mpCurrentRole=mpSelectRole;
151
152 for (int i=0;i<=mRoleNum/2;i++)
153 {
154
155 mpCurrentRole->setZOrder(mRoleNum-mpCurrentRole->mDistance);
156 mpCurrentRole=mpCurrentRole->mpNextRole;
157 }
158 for (int i=mRoleNum/2+1;i<mRoleNum;i++)
159 {
160
161 mpCurrentRole->setZOrder(abs(mRoleNum/2-mpCurrentRole->mDistance));
162 mpCurrentRole=mpCurrentRole->mpNextRole;
163 }
164
165 }
166
167
168
169
170 void CircleStage::addRole(CandidateRole *newRole)
171 {
172 if (!mpHead)
173 {
174 mpHead=newRole;
175 this->addChild(newRole);
176 mpLast=mpHead;
177 mpLast->mpNextRole=mpHead;
178 mpHead->mpForeRole=mpHead;
179 mpCurrentRole=mpHead;
180 mRoleNum++;
181 mpCurrentRole->setPositionIndex(mRoleNum);
182 mpSelectRole=newRole;
183 }
184 else
185 {
186 mpLast->mpNextRole=newRole;
187 newRole->mpNextRole=mpHead;
188 newRole->mpForeRole=mpLast;
189 mpHead->mpForeRole=newRole;
190 this->addChild(newRole);
191 mpLast=newRole;
192 mRoleNum++;
193 newRole->setPositionIndex(mRoleNum);
194 }
195 int x,y;
196 double t;
197 while(1)
198 {
199 t=360/mRoleNum*(mpCurrentRole->getPositionIndex()-1)-90;
200 t=t*3.14/180;//convert t to radian
201 x=mCircleA*cos(t);
202 y=mCircleB*sin(t);
203 mpCurrentRole->setPositionX(x);
204 mpCurrentRole->setPositionY(y);
205 mpCurrentRole=mpCurrentRole->mpNextRole;
206
207 if (mpCurrentRole==mpHead)
208 {
209 break;
210 }
211
212 }
213 }
214
215 void CircleStage::changeToNext() //从右向左
216 {
217 mpSelectRole=mpSelectRole->mpNextRole;
218 CCCallFunc* callFuncActionEnd = CCCallFunc::create(this,callfunc_selector(CircleStage::actionEnd));
219 CCCallFunc* callUpdateZorder = CCCallFunc::create(this,callfunc_selector(CircleStage::updateZordersCallBack));
220 if (mpCurrentRole->mpNextRole)
221 {
222
223 mpSelectRole->setZOrder(mRoleNum);
224 for (int i=0;i<mRoleNum;i++)
225 {
226
227 mpCurrentRole->mNextPositionX=mpCurrentRole->mpForeRole->getPositionX();
228 mpCurrentRole->mNextPositionY=mpCurrentRole->mpForeRole->getPositionY();
229 mbOnAction=true;
230 CCMoveTo *moveToNext=CCMoveTo::create(0.4f,ccp(mpCurrentRole->mNextPositionX,mpCurrentRole->mNextPositionY));
231 CCScaleTo *scaleToFore=CCScaleTo::create(0.4f,mpCurrentRole->mpForeRole->getScale());
232 CCFiniteTimeAction* spawnAction = CCSpawn::create(moveToNext,scaleToFore,NULL);
233
234 CCSequence* actions = CCSequence::create(spawnAction,callUpdateZorder,callFuncActionEnd,NULL);
235 mpCurrentRole->runAction(actions);
236
237 mpCurrentRole=mpCurrentRole->mpNextRole;
238
239 }
240 updateDistances();
241 updateColor();
242
243 }
244
245
246 }
247
248 void CircleStage::updateZordersCallBack()
249 {
250 updateZorders();
251 }
252 void CircleStage::actionEnd()
253 {
254 mbOnAction=false;
255
256 }
257
258 void CircleStage::changeToFore() //从左向右
259 {
260 mpSelectRole=mpSelectRole->mpForeRole;
261 CCCallFunc* callFuncActionEnd = CCCallFunc::create(this,callfunc_selector(CircleStage::actionEnd));
262
263 if (mpCurrentRole->mpForeRole)
264 {
265 for (int i=0;i<mRoleNum;i++)
266 {
267 mpCurrentRole->mNextPositionX=mpCurrentRole->mpNextRole->getPositionX();
268 mpCurrentRole->mNextPositionY=mpCurrentRole->mpNextRole->getPositionY();
269 mbOnAction=true;
270
271 CCMoveTo *moveToFore=CCMoveTo::create(0.4f,ccp(mpCurrentRole->mNextPositionX,mpCurrentRole->mNextPositionY));
272 CCScaleTo *scaleToFore=CCScaleTo::create(0.4f,mpCurrentRole->mpNextRole->getScale());
273 CCFiniteTimeAction* spawnAction = CCSpawn::create(moveToFore,scaleToFore,NULL);
274 CCSequence* actions = CCSequence::create(spawnAction,callFuncActionEnd,NULL);
275 mpCurrentRole->runAction(actions);
276 mpCurrentRole=mpCurrentRole->mpNextRole;
277
278 }
279 updateDistances();
280 updateZorders();
281 updateColor();
282
283 }
284 }
285
286 bool CircleStage::isOnAction()
287 {
288 return mbOnAction;
289 }
cocos2dx实现环形角色选择界面
时间： 2024-10-28 23:40:05