Cocos2d-x 3.2 It 2048--third

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Ok. Hurry up and update it.

Long story short, straight to the subject. Third article:

--Creation of digital block class

The number block is God horse?

--that is, the number you are sliding, and the number that appears randomly.

We first create a class numbertiled, which inherits from node:

NumberTiled.h:

#ifndef __test2048_numbertiled_h__#define __test2048_numbertiled_h__#include "Cocos2d.h" Using_ns_cc;class Numbertiled:public node{public://stores the column position and the numeric value of the position int m_row,m_col;int m_number;//move to r,c this position void moveTo (int r, int c ); Create_func (numbertiled); bool Init ();}; #endif

NumberTiled.cpp:

#include "NumberTiled.h" #include "GameDefine.h" Using_ns_cc;bool numbertiled::init () {if (! Node::init ()) {return false;} Background Layer Auto BK = layercolor::create (color4b (200,200,200,255), game_tiled_width,game_tiled_height); This->addchild ( BK);//Digital Layer--random out a number. Generates 4 if the number equals 7 otherwise generates 2int n = rand ()%10;this, M_number = n==7?4:2;//depending on the value of the number, assign a different color switch (this-m_number) {case 2:BK SetColor (color3b (230,220,210)), Break;case 4:BK-SetColor (color3b (230,210,190)); break;default:break;} Create the font and show the number of this block Ttfconfig config ("Hellokitty.ttf", +); auto label = Label::createwithttf (config, stringutils::  Format ("%d", this->m_number)); Label, SetPosition (Point (GAME_TILED_WIDTH/2,GAME_TILED_HEIGHT/2)), label, SetColor (Color3b::black), BK- > addChild (label); return true;}  void Numbertiled::moveto (int r, int c) {This, M_row = r;this-M_col = C;this setposition (Point (M_col * Game_tiled_width + game_tiled_board_width * (M_col + 1), M_row * game_tiled_height + game_tiled_bOard_width * (m_row+1)));} 

Well, the function of this kind of foundation is complete,

is to initialize and move (appear) to a certain location.

Next, we'll show it randomly on our interface.

Go to the game interface,

In the previous article, we added a logical array map,

Now we have to add a vector (set) to hold all the blocks.

GameScene.h:

vector<numbertiled *> m_alltiled;

And then. In Init. We created the lattice, and then, with a number block,

It's going to produce a random block.

Add a method--newnumbertiled

This function is to create a new block:

void gamescene::newnumbertiled () {//Create an instance of a number block auto tiled = Numbertiled::create ();//Find a location with several spare int freecount = 16-m_allt Iled.size (); int num = rand ()% freecount;int row = 0,col = 0,count = 0;bool Find = false;//produces a number, must be in a blank area for (; row < GA Me_rows; ++row) {for (col = 0; col < game_cols; ++col) {if (map[row][col] = = 0) {//record number of empty areas ++count;if (Count >= num) {fin d = True;break;}}} if (find) {break;}}  Note Add tiled yo colorback-addChild (tiled) in Colorback, tiled-moveTo (row, col); M_alltiled.pushback (tiled); map[ Row] [col] = M_alltiled.getindex (tiled) +1;}

Well, explain it in detail. has been given in the code.

Explain how to randomly generate blocks in an empty location:

First of all. Gets the number of empty locations

And then. Randomly produces a number. Less than the total number of empty locations

Then set the count to 0,

Traverse from the first position to the last position,

Encounter empty position, count+1.

If it is greater than the resulting random number, the number block is placed at that position.

Now, to be able to execute a bit. Take a look at the effect:

Watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvbhr0cmvl/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/dissolve/70 /gravity/southeast ">

Ok, this time it's here.

The next content is. Handling of touch Screens ~

Please look forward to

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Cocos2d-x 3.2 It 2048--third