godot/scene/animation/animation_tree_player.h

/*************************************************************************/
/*  animation_tree_player.h                                              */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
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#ifndef ANIMATION_TREE_PLAYER_H
#define ANIMATION_TREE_PLAYER_H


#include "scene/resources/animation.h"
#include "scene/3d/spatial.h"
#include "scene/3d/skeleton.h"
#include "animation_player.h"


class AnimationTreePlayer : public Node {

	GDCLASS( AnimationTreePlayer, Node );
	OBJ_CATEGORY("Animation Nodes");

public:
	enum AnimationProcessMode {
		ANIMATION_PROCESS_FIXED,
		ANIMATION_PROCESS_IDLE,
	};

	enum NodeType {

		NODE_OUTPUT,
		NODE_ANIMATION,
		NODE_ONESHOT,
		NODE_MIX,
		NODE_BLEND2,
		NODE_BLEND3,
		NODE_BLEND4,
		NODE_TIMESCALE,
		NODE_TIMESEEK,
		NODE_TRANSITION,

		NODE_MAX,
	};

	enum ConnectError {

		CONNECT_OK,
		CONNECT_INCOMPLETE,
		CONNECT_CYCLE
	};

private:

	enum {

		DISCONNECTED=-1,
	};

	struct TrackKey {

		uint32_t id;
		StringName property;
		int bone_idx;

		inline bool operator<(const TrackKey& p_right) const {

			if (id==p_right.id) {
				if (bone_idx==p_right.bone_idx) {
					return property<p_right.property;
				} else
					return bone_idx<p_right.bone_idx;
			} else
				return id<p_right.id;
		}
	};


	struct Track {
		uint32_t id;
		Object *object;
		Spatial* spatial;
		Skeleton *skeleton;
		int bone_idx;
		StringName property;

		Vector3 loc;
		Quat rot;
		Vector3 scale;

		Variant value;

		bool skip;
	};


	typedef Map<TrackKey,Track> TrackMap;

	TrackMap track_map;


	struct Input {

		StringName node;
		//Input() { node=-1;  }
	};

	struct NodeBase {

		bool cycletest;

		NodeType type;
		Point2 pos;


		Vector<Input> inputs;

		NodeBase() { cycletest = false; };
		virtual ~NodeBase() { cycletest=false; }
	};

	struct NodeOut : public NodeBase {

		NodeOut() { type=NODE_OUTPUT; inputs.resize(1); }
	};

	struct AnimationNode : public NodeBase {

		Ref<Animation> animation;


		struct TrackRef {
			int local_track;
			Track *track;
			float weight;
		};

		uint64_t last_version;
		List<TrackRef> tref;
		AnimationNode *next;
		float time;
		float step;
		String from;
		bool skip;

		HashMap<NodePath,bool> filter;

		AnimationNode() { type=NODE_ANIMATION;  next=NULL; last_version=0; skip=false; }
	};


	struct OneShotNode  : public NodeBase {

		bool active;
		bool start;
		float fade_in;
		float fade_out;

		bool autorestart;
		float autorestart_delay;
		float autorestart_random_delay;
		bool mix;


		float time;
		float remaining;
		float autorestart_remaining;

		HashMap<NodePath,bool> filter;

		OneShotNode() { type=NODE_ONESHOT; fade_in=0; fade_out=0; inputs.resize(2); autorestart=false; autorestart_delay=1; autorestart_remaining=0; mix=false; active=false; start=false;}
	};

	struct MixNode : public NodeBase {

		float amount;
		MixNode() { type=NODE_MIX;  inputs.resize(2); }
	};

	struct Blend2Node  : public NodeBase {

		float value;
		HashMap<NodePath,bool> filter;
		Blend2Node() { type=NODE_BLEND2; value=0; inputs.resize(2); }
	};

	struct Blend3Node : public NodeBase {

		float value;
		Blend3Node() { type=NODE_BLEND3; value=0; inputs.resize(3); }
	};

	struct Blend4Node : public NodeBase {

		Point2 value;
		Blend4Node() { type=NODE_BLEND4; inputs.resize(4); }
	};

	struct TimeScaleNode : public NodeBase {

		float scale;
		TimeScaleNode() { type=NODE_TIMESCALE; scale=1; inputs.resize(1); }
	};

	struct TimeSeekNode : public NodeBase {

		float seek_pos;

		TimeSeekNode() { type=NODE_TIMESEEK;  inputs.resize(1); seek_pos=-1; }
	};

	struct TransitionNode : public NodeBase {

		struct InputData {

			bool auto_advance;
			InputData() { auto_advance=false; }
		};

		Vector<InputData> input_data;

		float prev_time;
		float prev_xfading;
		int prev;
		bool switched;


		float time;
		int current;

		float xfade;

		TransitionNode() { type=NODE_TRANSITION;  xfade=0; inputs.resize(1); input_data.resize(1); current=0; prev=-1; prev_time=0; prev_xfading=0; switched=false; }
		void set_current(int p_current);
	};


	void _update_sources();

	StringName out_name;
	NodeOut *out;


	NodePath base_path;
	NodePath master;

	ConnectError last_error;
	AnimationNode *active_list;
	AnimationProcessMode animation_process_mode;
	bool processing;
	bool active;
	bool dirty_caches;
	Map<StringName,NodeBase*> node_map;

	// return time left to finish animation
	float _process_node(const StringName& p_node,AnimationNode **r_prev_anim,float p_step, bool p_seek=false, float p_fallback_weight = 1.0, HashMap<NodePath,float>* p_weights = NULL);
	void _process_animation(float p_delta);
	bool reset_request;

	ConnectError _cycle_test(const StringName &p_at_node);

	Track* _find_track(const NodePath& p_path);
	void _recompute_caches();
	void _recompute_caches(const StringName& p_node);
	PoolVector<String> _get_node_list();
	
	void _compute_weights(float *p_fallback_weight, HashMap<NodePath,float> *p_weights, float p_coeff, const HashMap<NodePath,bool> *p_filter = NULL, float p_filtered_coeff = 0);

protected:




	bool _set(const StringName& p_name, const Variant& p_value);
	bool _get(const StringName& p_name,Variant &r_ret) const;
	void _get_property_list( List<PropertyInfo> *p_list) const;
	void _notification(int p_what);

	static void _bind_methods();


public:


	void add_node(NodeType p_type, const StringName& p_node); // nodes must be >0 node 0 is built-in (exit)
	bool node_exists(const StringName& p_name) const;

	Error node_rename(const StringName& p_node,const StringName& p_new_name);
	int node_get_input_count(const StringName& p_node) const;
	StringName node_get_input_source(const StringName& p_node,int p_input) const;

	/* ANIMATION NODE */
	void animation_node_set_animation(const StringName& p_node,const Ref<Animation>& p_animation);
	Ref<Animation> animation_node_get_animation(const StringName& p_node) const;
	void animation_node_set_master_animation(const StringName& p_node,const String& p_master_animation);
	String animation_node_get_master_animation(const StringName& p_node) const;

	void animation_node_set_filter_path(const StringName& p_node,const NodePath& p_filter,bool p_enable);
	void animation_node_set_get_filtered_paths(const StringName& p_node,List<NodePath> *r_paths) const;
	bool animation_node_is_path_filtered(const StringName& p_node,const NodePath& p_path) const;

	/* ONE SHOT NODE */

	void oneshot_node_set_fadein_time(const StringName& p_node,float p_time);
	void oneshot_node_set_fadeout_time(const StringName& p_node,float p_time);

	float oneshot_node_get_fadein_time(const StringName& p_node) const;
	float oneshot_node_get_fadeout_time(const StringName& p_node) const;

	void oneshot_node_set_autorestart(const StringName& p_node,bool p_active);
	void oneshot_node_set_autorestart_delay(const StringName& p_node,float p_time);
	void oneshot_node_set_autorestart_random_delay(const StringName& p_node,float p_time);

	bool oneshot_node_has_autorestart(const StringName& p_node) const;
	float oneshot_node_get_autorestart_delay(const StringName& p_node) const;
	float oneshot_node_get_autorestart_random_delay(const StringName& p_node) const;

	void oneshot_node_set_mix_mode(const StringName& p_node,bool p_enabled);
	bool oneshot_node_get_mix_mode(const StringName& p_node) const;

	void oneshot_node_start(const StringName& p_node);
	void oneshot_node_stop(const StringName& p_node);
	bool oneshot_node_is_active(const StringName& p_node) const;

	void oneshot_node_set_filter_path(const StringName& p_node,const NodePath& p_filter,bool p_enable);
	void oneshot_node_set_get_filtered_paths(const StringName& p_node,List<NodePath> *r_paths) const;
	bool oneshot_node_is_path_filtered(const StringName& p_node,const NodePath& p_path) const;


	/* MIX/BLEND NODES */

	void mix_node_set_amount(const StringName& p_node,float p_amount);
	float mix_node_get_amount(const StringName& p_node) const;

	void blend2_node_set_amount(const StringName& p_node,float p_amount);
	float blend2_node_get_amount(const StringName& p_node) const;
	void blend2_node_set_filter_path(const StringName& p_node,const NodePath& p_filter,bool p_enable);
	void blend2_node_set_get_filtered_paths(const StringName& p_node,List<NodePath> *r_paths) const;
	bool blend2_node_is_path_filtered(const StringName& p_node,const NodePath& p_path) const;

	void blend3_node_set_amount(const StringName& p_node,float p_amount);
	float blend3_node_get_amount(const StringName& p_node) const;

	void blend4_node_set_amount(const StringName& p_node,const Point2& p_amount);
	Point2 blend4_node_get_amount(const StringName& p_node) const;

	/* TIMESCALE/TIMESEEK NODES */

	void timescale_node_set_scale(const StringName& p_node,float p_scale);
	float timescale_node_get_scale(const StringName& p_node) const;

	void timeseek_node_seek(const StringName& p_node,float p_pos);

	/* TRANSITION NODE */

	void transition_node_set_input_count(const StringName& p_node, int p_inputs); // used for transition node
	int transition_node_get_input_count(const StringName& p_node) const;
	void transition_node_delete_input(const StringName& p_node, int p_input); // used for transition node

	void transition_node_set_input_auto_advance(const StringName& p_node, int p_input,bool p_auto_advance); // used for transition node
	bool transition_node_has_input_auto_advance(const StringName& p_node, int p_input) const;

	void transition_node_set_xfade_time(const StringName& p_node, float p_time); // used for transition node
	float transition_node_get_xfade_time(const StringName& p_node) const;

	void transition_node_set_current(const StringName& p_node, int p_current);
	int transition_node_get_current(const StringName& p_node) const;


	void node_set_pos(const StringName& p_node, const Vector2& p_pos); //for display

	/* GETS */
	Point2 node_get_pos(const StringName& p_node) const; //for display

	NodeType node_get_type(const StringName& p_node) const;

	void get_node_list(List<StringName> *p_node_list) const;
	void remove_node(const StringName& p_node);

	Error connect_nodes(const StringName& p_src_node,const StringName& p_dst_node, int p_dst_input);
	bool are_nodes_connected(const StringName& p_src_node,const StringName& p_dst_node, int p_input) const;
	void disconnect_nodes(const StringName& p_src_node, int p_input);

	void set_base_path(const NodePath& p_path);
	NodePath get_base_path() const;

	void set_master_player(const NodePath& p_path);
	NodePath get_master_player() const;

	struct Connection {

		StringName src_node;
		StringName dst_node;
		int dst_input;
	};

	void get_connection_list( List<Connection> *p_connections) const;

	/* playback */

	void set_active(bool p_active);
	bool is_active() const;

	void reset();

	void recompute_caches();

	ConnectError get_last_error() const;

	void set_animation_process_mode(AnimationProcessMode p_mode);
	AnimationProcessMode get_animation_process_mode() const;

	void _set_process(bool p_process, bool p_force = false);

	void advance(float p_time);

	AnimationTreePlayer();
	~AnimationTreePlayer();

};

VARIANT_ENUM_CAST( AnimationTreePlayer::NodeType );
VARIANT_ENUM_CAST( AnimationTreePlayer::AnimationProcessMode );

#endif // ANIMATION_TREE_PLAYER_H