BoxTerrain.cpp

/*
 * World.cpp
 *
 *  Created on: 27 sept. 2018
 *      Author: lucie
 */

#include "BoxTerrain.h"

BoxTerrain::BoxTerrain(){};

BoxTerrain::BoxTerrain(b2World* world, sf::RenderWindow& window, config::sTerrain terrainParam, int WINDOW_X_PX, double bodyLength)
: Terrain(world, window, terrainParam, WINDOW_X_PX, bodyLength){
    // TODO Auto-generated constructor stub
    m_M_TO_PX = WINDOW_X_PX /  (1.2*m_width);
    m_posY=window.getSize().y/m_M_TO_PX - (window.getSize().y/m_M_TO_PX-m_height)/2;
    m_window_x = window.getSize().x;
    m_window_y = window.getSize().y;

}

BoxTerrain::~BoxTerrain() {
    // TODO Auto-generated destructor stub
}

void BoxTerrain::create(b2World* world, sf::RenderWindow& window, config::sTerrain terrainParam, int WINDOW_X_PX, double bodyLength){
    Terrain::create(world, window, terrainParam, WINDOW_X_PX, bodyLength);
    m_M_TO_PX = WINDOW_X_PX /  (1.2*m_width);
    printf("m_M_TO_PX: %f, \n", m_M_TO_PX);
    m_posY=window.getSize().y/m_M_TO_PX - (window.getSize().y/m_M_TO_PX-m_height)/2;
    m_window_x = window.getSize().x;
    m_window_y = window.getSize().y;
}

void BoxTerrain::createBody(b2World* world){

    b2BodyDef BodyDef;
    BodyDef.position = b2Vec2(0, 0);
    BodyDef.type = b2_staticBody;
    m_groundBody = world->CreateBody(&BodyDef);

    b2EdgeShape edgeShape;
    float h = m_window_y/m_M_TO_PX-m_height;//window_y_px/m_to_pix - wall_h_m;
    float l = m_window_x/m_M_TO_PX-m_width;//window_x_px/m_to_pix - wall_w_m;

    b2FixtureDef topEdgeFixtureDef;
    edgeShape.Set( b2Vec2(l/2,h/2), b2Vec2(m_window_x/m_M_TO_PX - l/2,h/2) );
    topEdgeFixtureDef.shape = &edgeShape;
    m_groundBody->CreateFixture(&topEdgeFixtureDef);

    b2FixtureDef bottomEdgeFixtureDef;
    edgeShape.Set( b2Vec2(l/2,m_window_y/m_M_TO_PX - h/2), b2Vec2(m_window_x/m_M_TO_PX - l/2,m_window_y/m_M_TO_PX - h/2) );
    bottomEdgeFixtureDef.shape = &edgeShape;
    m_groundBody->CreateFixture(&bottomEdgeFixtureDef);

    b2FixtureDef leftEdgeFixtureDef;
    edgeShape.Set( b2Vec2(l/2,h/2), b2Vec2(l/2,m_window_y/m_M_TO_PX - h/2) );
    leftEdgeFixtureDef.shape = &edgeShape;
    m_groundBody->CreateFixture(&leftEdgeFixtureDef);

    b2FixtureDef rightEdgeFixtureDef;
    edgeShape.Set( b2Vec2(m_window_x/m_M_TO_PX - l/2,m_window_y/m_M_TO_PX - h/2), b2Vec2(m_window_x/m_M_TO_PX - l/2,h/2) );
    rightEdgeFixtureDef.shape = &edgeShape;
    m_groundBody->CreateFixture(&rightEdgeFixtureDef);

}

void BoxTerrain::drawBody(sf::RenderWindow& window){

    float h = window.getSize().y - m_height*m_M_TO_PX;
    float l = window.getSize().x - m_width*m_M_TO_PX;

    sf::VertexArray lines(sf::LinesStrip, 5);
    lines[0].position = sf::Vector2f(l/2, h/2);
    lines[1].position = sf::Vector2f(l/2, window.getSize().y-h/2);
    lines[2].position = sf::Vector2f(window.getSize().x-l/2, window.getSize().y-h/2);
    lines[3].position = sf::Vector2f(window.getSize().x-l/2, h/2);
    lines[4].position = sf::Vector2f(l/2, h/2);

    lines[0].color = sf::Color::Black;
    lines[1].color = sf::Color::Black;
    lines[2].color = sf::Color::Black;
    lines[3].color = sf::Color::Black;
    lines[4].color = sf::Color::Black;

    window.draw(lines);

}

e_terrain_type BoxTerrain::getType(){
    return BOX;
}