//! Main map editor module.
//!
//! The entry point is responsible for maintaining the lifetime of the editor
//! state and human interactions with it, but is otherwise not permitted to
//! directly edit it.

use maraiah::{durandal::image::*,
              marathon::map,
              rozinante::{color::*, draw::*}};

impl MapEditorState
{
   /// Creates a new empty map.
   pub fn new() -> MapEditorState
   {
      MapEditorState::default()
   }

   /// Draws the "no map" screen.
   pub fn draw_none<D, I>(d: &D, im: &I)
      where D: DrawArea<NativeImage = I>,
            I: CacheImage
   {
      d.clear(Color16::new(0, 0, 0));

      d.image((d.w() / 2 - im.w() / 2, d.h() / 2 - im.h() / 2), im);

      d.rect(Rect{x: 0, y: 0, w: d.w(), h: 18}, CR_DARK_RED);
      d.text((4, 14), "Map Required To Proceed", CR_RED);

      d.rect(Rect{x: 0, y: d.h() - 18, w: d.w(), h: 18}, CR_DARK_RED);
      d.text((4, d.h() - 4), "CAS.qterm//CyberAcme Systems Inc.", CR_RED);
   }

   /// Draws the currently open map.
   pub fn draw_some(&self, d: &impl DrawArea)
   {
      d.clear(Color16::new(0, 0, 0));
   }
}

impl Default for Tool
{
   fn default() -> Tool {Tool::Points}
}

/// Copyable map state.
#[derive(Clone, Default)]
pub struct MapEditorStateBlock
{
   info: map::Minf,
}

/// The state of a map editor.
#[derive(Default)]
pub struct MapEditorState
{
   edit_stack: Vec<MapEditorStateBlock>,
   tool:       Tool,
}

/// A tool in the map editor.
pub enum Tool
{
   Points,
   Lines,
   Polygons,
}

// EOF