#include "level.h"
#include "player.h"
#include <azur/azur.h>
#include <azur/gint/render.h>

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

#define TILESIZE 16

extern struct Map map_level1;
extern struct Map map_level2;
extern struct Map map_level3;

extern bool drawbackground;

struct Map *map_level;


int tileXmin, tileXmax;
int tileYmin, tileYmax;
int XinTile, YinTile;

extern bopti_image_t img_selected;


Level::Level( )
{
    map_level = &map_level1;
}

Level::~Level( )
{

}

void Level::ChangeMap( int level, Player *MyPlayer )
{
    if(level==1)          map_level = &map_level1;
    else if(level==2)     map_level = &map_level2;
    else if(level==3)     map_level = &map_level3;
    else                  map_level = &map_level1;   

    this->UpdateDataMap( MyPlayer );
}

void Level::UpdateDataMap( Player *MyPlayer )
{
    for(int i=0; i<map_level->w; i++)
    {
        for(int j=0; j<map_level->h; j++)
        {
            uint16_t index = j * map_level->w + i;
            uint16_t currentTile = map_level->layers[1][ index ];
            if (currentTile==32)
            {
                MyPlayer->x = (float) (i*16+8);
                MyPlayer->y = (float) (j*16);
                MyPlayer->vx = 0.0f;
                MyPlayer->vy = 0.0f;
                MyPlayer->Update( 0.0f );
            } 
        }
    }
}

void Level::Render( void )
{
    for(int u=!drawbackground; u<map_level->nblayers;u++)
    {
        for(int i=0; i<map_level->w; i++)
        {
            for(int j=0; j<map_level->h; j++)
            {
                uint16_t index = j * map_level->w + i;
                uint16_t currentTile = map_level->layers[u][ index ];
                if (currentTile!=0 && currentTile!=32)
                {
                    uint16_t xtile = ((currentTile % map_level->tileset_size)-1) * 16;
                    uint16_t ytile = (currentTile / map_level->tileset_size) * 16;
                    azrp_subimage_p8( i*16, j*16, map_level->tileset, xtile, ytile, 16, 16, DIMAGE_NONE );
                    
                    // TODO :
                    // the last column of tile is not fully drawn cause 4 pixels are missing
                    // to upgrade the 
                } 
            }
        }
    }
}

void Level::RenderSelected( void )
{
    for(int i=tileXmin; i<=tileXmax; i++)
    {
        for(int j=tileYmin; j<=tileYmax; j++)
        {
            azrp_image_p8( i*16, j*16, &img_selected, DIMAGE_NONE );
        }
    }
}


void Level::Update( float dt )
{

}




int Level::GetTileBackground( uint8_t x, uint8_t y )
{
    uint8_t tileX = x / 16;
    uint8_t tileY = y / 16;

    uint16_t index = tileY * map_level->w + tileX % map_level->w;
    uint16_t currentTile = map_level->layers[0][ index ];
    return currentTile;
}


int Level::GetTileForeground( uint8_t x, uint8_t y )
{
    uint8_t tileX = x / 16;
    uint8_t tileY = y / 16;

    uint16_t index = tileY * map_level->w + tileX;
    uint16_t currentTile = map_level->layers[1][ index ];
    return currentTile;
}


bool Level::CanGo( Player *MyPlayer )
{
    int tileX, tileY;
    int tileIndex, tileValue;

    int xmin = (int) MyPlayer->nextx - 8;
    int ymin = (int) MyPlayer->nexty - 8;
    int xmax = (int) MyPlayer->nextx + 8;
    int ymax = (int) MyPlayer->nexty + 8;

/*
    tileXmin = xmin / 16;
    tileXmax = xmax / 16;
    tileYmin = ymin / 16;
    tileYmax = ymax / 16;

    XinTile = xmin % 16;
    YinTile = ymin % 16;
*/

    if ((MyPlayer->action == RUN || MyPlayer->action == WALK) && MyPlayer->direction == LEFT)
    {
        if( GetTileBackground( xmin, ymin ) != 0 || GetTileBackground( xmin, ymax ) != 0) return false;
    }
    else if ((MyPlayer->action == RUN || MyPlayer->action == WALK) && MyPlayer->direction == RIGHT)
    {
        if( GetTileBackground( xmax, ymax ) != 0 || GetTileBackground( xmin, ymax ) != 0) return false;
    }
    else if (MyPlayer->action == JUMP)
    {
        if( GetTileBackground( xmin, ymin ) != 0 || GetTileBackground( xmax, ymin ) != 0) return false;
    }
    else if (MyPlayer->action == FALL)
    {
        if( GetTileBackground( xmin, ymax ) != 0 || GetTileBackground( xmax, ymax ) != 0) return false;
    }

    return true;
}