Cocos2D-X Platformer tutorial Part 2 – Player

Okay time to add the player to the scene we created before in the first part of this tutorial.
Stuff that is new and things to look out for.

Added a SCALE_FACTOR, the view of the scene/tiledMap and the player was too small had to scale it a bit
Be careful, scaling means that positions also have to be scaled
You will notice this in the method positionForTileCoordinate in Level class
Positioning is done according to tiles since this will be a tiled game, ex: Point(10,2) means 10th tile on x axis and 2nd on y axis
Player class is there mostly to save the state of the player, its tempting to make it a sprite but I’m still not sure, you can make it a sprite if you want to

#pragma once

#include "cocos2d.h"

using namespace cocos2d;

class Player : public Object

{

public:

//FIELDS

enum State {

Standing, Walking, Jumping

};

State state;

bool facingRight;

bool grounded;

float stateTime;

Point position;

Point velocity;

Player(void);

virtual ~Player(void);

};

#include "Player.h"

Player::Player(void)

{

state = Player::State::Standing;

facingRight = true;

grounded = true;

stateTime = 0;

velocity = Point(0,0);

position = Point();

}

Player::~Player(void)

{

}

#pragma once

#include "cocos2d.h"

using namespace cocos2d;

class Level : public Object

{

public:

TMXTiledMap *map;

void loadMap(const char* name);

TMXTiledMap * getMap();

Point positionForTileCoordinate(Size s, Point point);

Level(void);

virtual ~Level(void);

};

#include "Level.h"

#include "globals.h"

void Level::loadMap(const char* mapname){

map = TMXTiledMap::create(mapname);

map->retain();

}

TMXTiledMap * Level::getMap(){

return map;

}

Point Level::positionForTileCoordinate(Size s, Point point){

float x = floor(s.width/2 * SCALE_FACTOR + point.x * map->getTileSize().width * SCALE_FACTOR);

float y = floor(s.height/2 * SCALE_FACTOR + point.y * map->getTileSize().height * SCALE_FACTOR);

return Point(x,y);

}

Level::Level(void)

{

}

Level::~Level(void)

{

map->release();

}

#pragma once

#include "cocos2d.h"

#include "Level.h"

#include "Player.h"

USING_NS_CC;

class GameScene : public cocos2d::Layer

{

public:

//FIELDS

Level * level;

Player *player;

Sprite *player_sprite;

//CONSTRUCTOR & METHODS

static cocos2d::Scene* createScene();

virtual bool init();

void menuCloseCallback(cocos2d::Ref* pSender);

CREATE_FUNC(GameScene);

GameScene(void);

virtual ~GameScene(void);

};

#include "GameScene.h"
#include "globals.h"

Scene* GameScene::createScene()
{
    auto scene = Scene::create();
    
    auto layer = GameScene::create();

scene->addChild(layer);
   
    return scene;
}

bool GameScene::init()
{

if ( !Layer::init() )
    {
        return false;
    }

level = new Level();
	level->loadMap("level1.tmx");
	level->retain();

auto director = Director::getInstance();
	level->getMap()->setScale(SCALE_FACTOR);

this->addChild(level->getMap());

SpriteFrameCache::getInstance()->addSpriteFramesWithFile("solbrain.plist");

player_sprite = Sprite::createWithSpriteFrameName("idle");
	player_sprite->setScale(SCALE_FACTOR);
	player_sprite->setFlippedX(true);

Point point = Point(10,2);
	Size size = player_sprite->getContentSize();

player_sprite->setPosition(level->positionForTileCoordinate(size, point));

player = new Player();
	player->retain();

this->addChild(player_sprite);

return true;
}

GameScene::GameScene(){
}

GameScene::~GameScene(void)
{
}

#include "GameScene.h"

#include "globals.h"

Scene* GameScene::createScene()

{

auto scene = Scene::create();

auto layer = GameScene::create();

scene->addChild(layer);

return scene;

}

bool GameScene::init()

{

if ( !Layer::init() )

{

return false;

}

level = new Level();

level->loadMap("level1.tmx");

level->retain();

auto director = Director::getInstance();

level->getMap()->setScale(SCALE_FACTOR);

this->addChild(level->getMap());

SpriteFrameCache::getInstance()->addSpriteFramesWithFile("solbrain.plist");

player_sprite = Sprite::createWithSpriteFrameName("idle");

player_sprite->setScale(SCALE_FACTOR);

player_sprite->setFlippedX(true);

Point point = Point(10,2);

Size size = player_sprite->getContentSize();

player_sprite->setPosition(level->positionForTileCoordinate(size, point));

player = new Player();

player->retain();

this->addChild(player_sprite);

return true;

}

GameScene::GameScene(){

}

GameScene::~GameScene(void)

{

}

#pragma once

const float SCALE_FACTOR = 2.0f;

const float PLAYER_MAX_VELOCITY = 10.0f;

const float PLAYER_JUMP_VELOCITY = 40.0f;

const float DAMPING = 0.87f;

This entry was posted in Cocos2D-X and tagged cocos2dx,platformer on May 19, 2014

Cocos2D-X Platformer tutorial Part 2 – Player

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