-- Copyright (c) 2024 - Ognjen 'xolatile' Milan Robovic
--
-- GNU General Public Licence (version 3 or later)

pragma ada_2012;

with core, ui, effect, attribute, skill, resource, faction, might, magic, item, unit, construction, chad, world, ai;

procedure main is

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	side_panel      : integer := 0;
	preview_width   : integer := 0;
	preview_height  : integer := 0;
	text_box_height : integer := 0;

	player : chad.information := chad.trait (chad.ognjen);

                                             ------------------------------------------------------------------------------------------

	type view is (
		map_preview_panel,      status_preview_panel,   text_box_panel
	);

	view_icon : array (view) of core.sprite;

	view_list : array (view) of boolean := (others => true);

	view_text : array (view) of core.long_string := (
		"Toggle map preview panel.                                               ",
		"Toggle status preview panel.                                            ",
		"Toggle text box panel.                                                  "
	);

	procedure swap_map_preview_panel    is begin view_list (map_preview_panel)    := (if view_list (map_preview_panel)    then false else true); end swap_map_preview_panel;
	procedure swap_status_preview_panel is begin view_list (status_preview_panel) := (if view_list (status_preview_panel) then false else true); end swap_status_preview_panel;
	procedure swap_text_box_panel       is begin view_list (text_box_panel)       := (if view_list (text_box_panel)       then false else true); end swap_text_box_panel;

	view_show : array (view) of access procedure := (
		swap_map_preview_panel'access,
		swap_status_preview_panel'access,
		swap_text_box_panel'access
	);

                                             ------------------------------------------------------------------------------------------

	procedure ui_main_style is
	begin
		ui.active := ui.style'val ((ui.style'pos (ui.active) + 1) mod (ui.style'pos (ui.style'last) + 1));
	end ui_main_style;

	procedure zoom_in  is begin core.zoom := 2; end zoom_in;
	procedure zoom_out is begin core.zoom := 1; end zoom_out;

	signal_list : constant array (core.signal_code) of access procedure := (
		core.signal_up          => core.move_camera_up'access,
		core.signal_down        => core.move_camera_down'access,
		core.signal_left        => core.move_camera_left'access,
		core.signal_right       => core.move_camera_right'access,
		core.signal_v           => ui_main_style'access,
		core.signal_kp_add      => zoom_in'access,
		core.signal_kp_subtract => zoom_out'access,
		others                  => core.idle'access
	);

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

begin

	core.dash;
	core.echo (core.comment, "Copyright (C) 2024 -- Ognjen 'xolatile' Milan Robovic");
	core.echo (core.comment, "Version -- 1.0.0");
	core.echo (core.comment, "License -- GNU/GPLv3+");
	core.echo (core.comment, "Xhads is free software, you can redistribute it and modify it under the terms of the GNU General Public License by Free Software Foundation.");
	core.dash;

	core.initialize;

	ui.configure;

	core.play (core.import_song (core.c_string ("./song/main_menu.ogg")).index);

	attribute.configure;
	skill.configure;
	resource.configure;
	--~might.configure;
	--~magic.configure;
	item.configure;
	unit.configure;
	construction.configure;
	chad.configure;
	world.configure;
	ai.configure;

	world.make (world.grass, 140, 120);

	core.dash;
	core.echo (core.success, "Successfully initialized game data, entering main gameplay loop.");
	core.dash;

	for index in view loop
		view_icon (index) := core.import_sprite ("./sprite/ui/icon/" & core.lowercase (view'image (index)) & ".png", 1, 1);
	end loop;

	ui.active := ui.imp;

	core.camera := (55, 50);

                                             ------------------------------------------------------------------------------------------

	gameplay: loop
		core.synchronize;
		--
		exit when core.engine_active = false;
		--
		if not view_list (status_preview_panel) then
			side_panel := 0;
		else
			side_panel := core.window_width / 4;
		end if;
		--
		preview_width   := core.window_width  - side_panel;
		preview_height  := core.window_height - text_box_height;
		text_box_height := 32;
		--
		core.camera.x := core.clip (core.camera.x, 0, world.map.width  - 1);
		core.camera.y := core.clip (core.camera.y, 0, world.map.height - 1);
		--
		world.draw;
		--
		if view_list (map_preview_panel) then
			ui.draw_menu (0, 0, preview_width, preview_height);
		end if;
		--
		if view_list (status_preview_panel) then
			ui.draw_tiny_menu (preview_width, 0, side_panel, preview_height);
			ui.draw_state_box (preview_width + 32, 32);
		end if;
		--
		if view_list (text_box_panel) then
			ui.draw_help_box (0, core.window_height - text_box_height, core.window_width - core.icon * (view'pos (view'last) + 1), text_box_height);
		end if;
		--
		for index in view loop
			ui.draw_icon (view_icon (index), view_text (index),
			              core.window_width - core.icon * (view'pos (view'last) + 1) + core.icon * view'pos (index),
			              core.window_height - text_box_height,
			              view_show (index));
		end loop;
		--
		signal_list (core.signal_code'val (core.signal_mode)).all;
		--
		--~magic.menu (0, 0, true);
		--~might.menu (0, 0, true);
		--
		chad.draw_alice;
		--
		ui.synchronize;
	end loop gameplay;

                                             ------------------------------------------------------------------------------------------

	core.deinitialize;

	core.dash;

end main;