wesnoth/src/unit_animation.hpp

/* $Id$ */
/*
   Copyright (C) 2006 - 2013 by Jeremy Rosen <jeremy.rosen@enst-bretagne.fr>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
   */
#ifndef UNIT_ANIMATION_H_INCLUDED
#define UNIT_ANIMATION_H_INCLUDED

#include "animated.hpp"
#include "config.hpp"
#include "unit_frame.hpp"

class attack_type;
class display;
class unit;

class unit_animation
{
		/** Shouldn't be used so only declared. */
		unit_animation();
	public:
		typedef enum { MATCH_FAIL=-10 , DEFAULT_ANIM=-9} variation_type;
		typedef enum { HIT, MISS, KILL, INVALID} hit_type;

		static const std::vector<std::string>& all_tag_names();
		static void fill_initial_animations( std::vector<unit_animation> & animations, const config & cfg);
		static void add_anims( std::vector<unit_animation> & animations, const config & cfg);

		int matches(const display &disp,const map_location& loc,const map_location& second_loc,const unit* my_unit,const std::string & event="",const int value=0,hit_type hit=INVALID,const attack_type* attack=NULL,const attack_type* second_attack = NULL, int value2 =0) const;


		const unit_frame& get_last_frame() const{ return unit_anim_.get_last_frame() ; };
		void add_frame(int duration, const unit_frame& value,bool force_change =false){ unit_anim_.add_frame(duration,value,force_change) ; };

		bool need_update() const;
		bool need_minimal_update() const;
		bool animation_finished() const;
		bool animation_finished_potential() const;
		void update_last_draw_time();
		int get_begin_time() const;
		int get_end_time() const;
                int time_to_tick(int animation_time) const { return unit_anim_.time_to_tick(animation_time); };
		int get_animation_time() const{ return unit_anim_.get_animation_time() ; };
		int get_animation_time_potential() const{ return unit_anim_.get_animation_time_potential() ; };
		void start_animation(int start_time
				, const map_location &src = map_location::null_location
				, const map_location &dst = map_location::null_location
				, const std::string& text = ""
				, const Uint32 text_color = 0
				, const bool accelerate = true);
		void update_parameters(const map_location &src, const map_location &dst);
                void pause_animation();
                void restart_animation();
		int get_current_frame_begin_time() const{ return unit_anim_.get_current_frame_begin_time() ; };
		void redraw(frame_parameters& value);
		void clear_haloes();
		bool invalidate(frame_parameters& value );

	friend class unit;

	explicit unit_animation(const config &cfg, const std::string &frame_string = "");

	protected:
	// reserved to class unit, for the special case of redrawing the unit base frame
	const frame_parameters get_current_params(const frame_parameters & default_val = frame_parameters()) const { return unit_anim_.parameters(default_val); };
	private:
		explicit unit_animation(int start_time
				, const unit_frame &frame
				, const std::string& event = ""
				, const int variation=DEFAULT_ANIM
				, const frame_builder & builder = frame_builder());

		class particule:public animated<unit_frame>
	{
		public:
			explicit particule(int start_time=0,const frame_builder &builder = frame_builder()) :
				animated<unit_frame>(start_time),
				accelerate(true),
				parameters_(builder),
				halo_id_(0),
				last_frame_begin_time_(0),
				cycles_(false)
				{};
			explicit particule(const config& cfg
					, const std::string& frame_string ="frame");

			virtual ~particule();
			bool need_update() const;
			bool need_minimal_update() const;
			typedef enum { UNSET,CYCLE,NO_CYCLE} cycle_state;
			void override(int start_time
					, int duration
					, const cycle_state cycles
					, const std::string& highlight = ""
					, const std::string& blend_ratio =""
					, Uint32 blend_color = 0
					, const std::string& offset = ""
					, const std::string& layer = ""
					, const std::string& modifiers = "");
			void redraw( const frame_parameters& value,const map_location &src, const map_location &dst);
			std::set<map_location> get_overlaped_hex(const frame_parameters& value,const map_location &src, const map_location &dst);
			void start_animation(int start_time);
			const frame_parameters parameters(const frame_parameters & default_val) const { return get_current_frame().merge_parameters(get_current_frame_time(),parameters_.parameters(get_animation_time()-get_begin_time()),default_val); };
			void clear_halo();
			bool accelerate;
		private:

			//animation params that can be locally overridden by frames
			frame_parsed_parameters parameters_;
			int halo_id_;
			int last_frame_begin_time_;
			bool cycles_;

	};
		t_translation::t_list terrain_types_;
		std::vector<config> unit_filter_;
		std::vector<config> secondary_unit_filter_;
		std::vector<map_location::DIRECTION> directions_;
		int frequency_;
		int base_score_;
		std::vector<std::string> event_;
		std::vector<int> value_;
		std::vector<config> primary_attack_filter_;
		std::vector<config> secondary_attack_filter_;
		std::vector<hit_type> hits_;
		std::vector<int> value2_;
		std::map<std::string,particule> sub_anims_;
		particule unit_anim_;
		/* these are drawing parameters, but for efficiancy reason they are in the anim and not in the particle */
		map_location src_;
		map_location dst_;
		// optimization
		bool invalidated_;
		bool play_offscreen_;
		std::set<map_location> overlaped_hex_;
};

class unit_animator
{
	public:
		unit_animator() :
			animated_units_(),
			start_time_(INT_MIN)
		{
		}


		void add_animation(unit* animated_unit
				, const unit_animation * animation
				, const map_location &src = map_location::null_location
				, bool with_bars = false
				, const std::string& text = ""
				, const Uint32 text_color = 0);
		void add_animation(unit* animated_unit
				, const std::string& event
				, const map_location &src = map_location::null_location
				, const map_location &dst = map_location::null_location
				, const int value = 0
				, bool with_bars = false
				, const std::string& text = ""
				, const Uint32 text_color = 0
				, const unit_animation::hit_type hit_type =
					unit_animation::INVALID
				, const attack_type* attack = NULL
				, const attack_type* second_attack = NULL
				, int value2 = 0);
		void replace_anim_if_invalid(unit* animated_unit
				, const std::string& event
				, const map_location &src = map_location::null_location
				, const map_location &dst = map_location::null_location
				, const int value = 0
				, bool with_bars = false
				, const std::string& text = ""
				, const Uint32 text_color = 0
				, const unit_animation::hit_type hit_type =
					unit_animation::INVALID
				, const attack_type* attack = NULL
				, const attack_type* second_attack = NULL
				, int value2 = 0);
		void start_animations();
                void pause_animation();
                void restart_animation();
		void clear(){start_time_ = INT_MIN ; animated_units_.clear();};
		void set_all_standing();


		bool would_end() const;
		int get_animation_time() const;
		int get_animation_time_potential() const;
		int get_end_time() const;
		void wait_for_end() const;
		void wait_until( int animation_time) const;
	private:
		 struct anim_elem {

			anim_elem() :
				my_unit(0),
				animation(0),
				text(),
				text_color(0),
				src(),
				with_bars(false)
			{}

			unit *my_unit;
			const unit_animation * animation;
			std::string text;
			Uint32 text_color;
			map_location src;
			bool with_bars;
		};

		std::vector<anim_elem> animated_units_;
		int start_time_;
};
#endif