#include "../config.h"

#include "background.h"
#include <azur/azur.h>
#include <azur/gint/render.h>

#include <cstdint>
#include <stdlib.h> 


extern struct Map map_Level1;
extern struct Map map_Level2;
Map *map_Level;

Background::Background( )
{
    map_Level = &map_Level1;
    speed = libnum::num(1.0);
}

Background::~Background( )
{
    
}

void Background::Render( void )
{
    int x0 = (int) xlevel;
    int xshifttile = (int) (16*xlevel.frac());
    int y0 = (int) ylevel;
    int yshifttile = (int) (16*ylevel.frac());

    for(int u=0; u<map_Level->nblayers;u++)
        for(int i=0; i<=25; i++)
        {
            for(int j=0; j<=14; j++)
            {
                uint16_t index = (j+y0) * map_Level->w + (x0+i) % map_Level->w;
                uint16_t currentTile = map_Level->layers[u][ index ];
                if (currentTile!=0)
                {
                    uint16_t xtile = ((currentTile % map_Level->tileset_size)-1) * 16;
                    uint16_t ytile = (currentTile / map_Level->tileset_size) * 16;
                    azrp_subimage_p8( i*16-xshifttile, j*16-yshifttile, map_Level->tileset, xtile, ytile, 16, 16, DIMAGE_NONE );
                } 
            }
        }


/*    int x0 = (int) xlevel;
    int shifttile = (int) (16*xlevel.frac());

    uint16_t tilemap[25*14]={0};

    for(int u=0; u<map_Level->nblayers;u++)
    {
        for(int j=0; j<14; j++)
        {
            for(int i=0; i<=25; i++)
            {
                uint16_t index = j * map_Level->w + (x0+i) % map_Level->w;
                tilemap[25*j+i]= cmap_Level->layers[u][ index ];
            }
        }
        azrp_tilesmap( shifttile, tilemap, map_Level->tileset, map_Level->tileset_size);
    }
*/
}

void Background::Update( float dt )
{
    libnum::num a = libnum::num( dt / 90000.0f); //18000.0f );
    xlevel += speed*a;
}


void Background::SetSpeed(libnum::num s)
{
    speed = s;
}


void Background::IncXCoordinate( libnum::num x )
{
    xlevel += x ;
}

void Background::IncYCoordinate( libnum::num y )
{
    ylevel += y ;
    if (ylevel<0) ylevel=libnum::num(0);
    if (ylevel>map_Level->h-14) ylevel=libnum::num(map_Level->h-14);
}


int Background::GetXCoordinate( void )
{
    return (int) xlevel;
}

int Background::GetYCoordinate( void )
{
    return (int) ylevel;
}