Messages

1

General / Collision Detection Not Working Right

« on: September 25, 2014, 07:22:41 pm »

Hello all,

i am at my wits end with this one, i am trying to generate a maze for a battle
city game remake.

I am reading in the following from a text file "map.txt"

Code: [Select]

####################
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************# //Length and height is 20, square size is 32 therefore 32*20 = screen dimensions(640)
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
#******************#
####################


This is the code i am using to generate co-ordinates for my maze: A '#' represents a square block

Code: [Select]

void Maze::readObstacleCoordinates()
{
    int x_pos = 0; //Where to begin drawing
    int y_pos = 0;

    _obstacles.clear(); //init _obstacles vector

    std::ifstream input("map.txt");
    std::string line;

    while(input>>line)
    {
        for(unsigned int i = 0; i < line.size(); i++)
        {

            if(line.at(i) == '#')
            {
                Vector2F Position(x_pos, y_pos);
                Obstacle obstacle(Position);
                _obstacles.push_back(obstacle); //create a vector of obstacles - which make up a maze
            }

            x_pos += 32; //squares  separated by distance of 32, i.e each square is 32 in size
        }
        x_pos = 0;
        y_pos += 32; //Square dimensions is 32
    }
}

Interface of the obstacle class

Code: [Select]

class Obstacle
{
public:
    Obstacle(const Vector2F& obstaclePos);
    Vector2F getPosition() const;
    int getSize() const;
    Vertices getVertices() const;

private:
    Vertices _vertices;
    Vector2F _obstaclePos;
    const int _obstacleSize = 32;
};

Interface of the maze class

Code: [Select]

class Maze
{
public:
    Maze();
    vector<Obstacle> getObstacles() const;

private:
    vector<Obstacle> _obstacles;
    void readObstacleCoordinates();
};

Draw obstacles using sfml rectangular shape

Code: [Select]

    for (unsigned int i = 0; i < _maze.getObstacles().size(); i++)
    {
        sf::RectangleShape pixel;
        pixel.setPosition(_maze.getObstacles().at(i).getPosition().x, _maze.getObstacles().at(i).getPosition().y);
        pixel.setTexture(&_wallTexture);
        pixel.setSize(sf::Vector2f(32, 32));
        _gameWindow.draw(pixel);
    }
   
My problem now arises when i try to do collision detection for all this, SFML draws everything on screen and it looks perfect:

Note A,B,C,D are the vertices of a square, My collision detection ( Horizontal Collision detection)

Code: [Select]

bool CollisionDetection::hasCollided(Vertices box1,Vertices box2) const
{
    if(box1.A.x - box2.B.x == 0 && box1.C.x - box2.D.x == 0)
    {
        return true;
    }
    return false;
}

The problem now is that sfml says there is a collision with the path that im supposed to move on, i.e the black spaces
shown on the picture below
http:// = [url]http://i1307.photobucket.com/albums/s582/ozwurld/Maze_zps507a6b9a.png

DOES ANYONE HAVE AN IDEA WHY THIS MAY BE??

-Thanks, sorry for the long question i am just trying to make sure i communicate the problem correctly!

2

General / Re: Drawing a maze from a text file on sfml 2.1

« on: August 28, 2014, 12:34:25 am »

Thanks for the hint, I really appreciate it everyone. 

3

General / Drawing a maze from a text file on sfml 2.1

« on: August 27, 2014, 03:42:19 pm »

Good day all,

I need to draw a really complex maze for a game that im making and would like to find out if it is possible to draw the maze based on a mapping that i have in a .txt file

-Thanks!

4

Window / Re: Implementation of Keyboard.hpp

« on: July 21, 2014, 09:19:49 pm »

~Thanks a million!

5

Window / Implementation of Keyboard.hpp

« on: July 21, 2014, 09:11:44 pm »

Hey all,

Dont know if im posting this in the right place, but im looking for the implementation of the header file

Keyboard.hpp

i reckon it should be

Keyboard.cpp

but cant find such a file anywhere, i just need to know how

isKeyPressed(Key key)

has been implemented.

Thanks! 

6

General / Making sense of pong example

« on: June 27, 2014, 04:39:45 pm »

Hello all,

I noticed that on the examples that come with sfml 2.0 , when a key event is been coded for the following line is used:

if ((event.type == sf::Event::KeyPressed) && (event.key.code == sf::Keyboard::Space))
{
}
 

What is the significant of this part, it doesnt look like its doing anything to me since the game still runs if i remove it, so am guessing the must be a reason its there.

(event.type == sf::Event::KeyPressed)
 

Thanks!