use integral_geometry::{Point, Size};

use land2d;

#[repr(C)]

pub struct GameField {

    collision: land2d::Land2D<u16>,

    pixels: land2d::Land2D<u32>,

}

#[no_mangle]

pub extern "C" fn create_game_field(width: u32, height: u32) -> *mut GameField {

    let game_field = Box::new(GameField {

        collision: land2d::Land2D::new(Size::new(width as usize, height as usize), 0),

        pixels: land2d::Land2D::new(Size::new(width as usize, height as usize), 0),

    });

    Box::leak(game_field)

}

#[no_mangle]

pub extern "C" fn land_get(game_field: &mut GameField, x: i32, y: i32) -> u16 {

    game_field.collision.map(y, x, |p| *p)

}

#[no_mangle]

pub extern "C" fn land_fill(

    game_field: &mut GameField,

    x: i32,

    y: i32,

    border_value: u16,

    fill_value: u16,

) {

    game_field

        .collision

        .fill(Point::new(x, y), border_value, fill_value)

}

#[no_mangle]

pub extern "C" fn land_set(game_field: &mut GameField, x: i32, y: i32, value: u16) {

    game_field.collision.map(y, x, |p| *p = value);

}

#[no_mangle]

pub extern "C" fn land_pixel_get(game_field: &mut GameField, x: i32, y: i32) -> u32 {

    game_field.pixels.map(y, x, |p| *p)

}

#[no_mangle]

pub extern "C" fn land_pixel_set(game_field: &mut GameField, x: i32, y: i32, value: u32) {

    game_field.pixels.map(y, x, |p| *p = value);

}

#[no_mangle]

pub extern "C" fn dispose_game_field(game_field: *mut GameField) {

    unsafe { drop(Box::from_raw(game_field)) };

}