1 files changed, 328 insertions, 0 deletions
diff --git a/scene/animation/animation_blend_tree.h b/scene/animation/animation_blend_tree.h
new file mode 100644
index 0000000000..7623fd3e57
--- /dev/null
+++ b/scene/animation/animation_blend_tree.h
@@ -0,0 +1,328 @@
+#ifndef ANIMATION_BLEND_TREE_H
+#define ANIMATION_BLEND_TREE_H
+
+#include "scene/animation/animation_graph_player.h"
+
+class AnimationNodeAnimation : public AnimationRootNode {
+
+	GDCLASS(AnimationNodeAnimation, AnimationRootNode);
+
+	StringName animation;
+
+	uint64_t last_version;
+	float time;
+	float step;
+	bool skip;
+
+protected:
+	void _validate_property(PropertyInfo &property) const;
+
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+	virtual float process(float p_time, bool p_seek);
+
+	void set_animation(const StringName &p_name);
+	StringName get_animation() const;
+
+	float get_playback_time() const;
+
+	AnimationNodeAnimation();
+};
+
+class AnimationNodeOneShot : public AnimationNode {
+	GDCLASS(AnimationNodeOneShot, AnimationNode);
+
+public:
+	enum MixMode {
+		MIX_MODE_BLEND,
+		MIX_MODE_ADD
+	};
+
+private:
+	bool active;
+	bool do_start;
+	float fade_in;
+	float fade_out;
+
+	bool autorestart;
+	float autorestart_delay;
+	float autorestart_random_delay;
+	MixMode mix;
+
+	float time;
+	float remaining;
+	float autorestart_remaining;
+	bool sync;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+
+	void set_fadein_time(float p_time);
+	void set_fadeout_time(float p_time);
+
+	float get_fadein_time() const;
+	float get_fadeout_time() const;
+
+	void set_autorestart(bool p_active);
+	void set_autorestart_delay(float p_time);
+	void set_autorestart_random_delay(float p_time);
+
+	bool has_autorestart() const;
+	float get_autorestart_delay() const;
+	float get_autorestart_random_delay() const;
+
+	void set_mix_mode(MixMode p_mix);
+	MixMode get_mix_mode() const;
+
+	void start();
+	void stop();
+	bool is_active() const;
+
+	void set_use_sync(bool p_sync);
+	bool is_using_sync() const;
+
+	virtual bool has_filter() const;
+	virtual float process(float p_time, bool p_seek);
+
+	AnimationNodeOneShot();
+};
+
+VARIANT_ENUM_CAST(AnimationNodeOneShot::MixMode)
+
+class AnimationNodeAdd : public AnimationNode {
+	GDCLASS(AnimationNodeAdd, AnimationNode);
+
+	float amount;
+	bool sync;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+
+	void set_amount(float p_amount);
+	float get_amount() const;
+
+	void set_use_sync(bool p_sync);
+	bool is_using_sync() const;
+
+	virtual bool has_filter() const;
+	virtual float process(float p_time, bool p_seek);
+
+	AnimationNodeAdd();
+};
+
+class AnimationNodeBlend2 : public AnimationNode {
+	GDCLASS(AnimationNodeBlend2, AnimationNode);
+
+	float amount;
+	bool sync;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+	virtual float process(float p_time, bool p_seek);
+
+	void set_amount(float p_amount);
+	float get_amount() const;
+
+	void set_use_sync(bool p_sync);
+	bool is_using_sync() const;
+
+	virtual bool has_filter() const;
+	AnimationNodeBlend2();
+};
+
+class AnimationNodeBlend3 : public AnimationNode {
+	GDCLASS(AnimationNodeBlend3, AnimationNode);
+
+	float amount;
+	bool sync;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+
+	void set_amount(float p_amount);
+	float get_amount() const;
+
+	void set_use_sync(bool p_sync);
+	bool is_using_sync() const;
+
+	float process(float p_time, bool p_seek);
+	AnimationNodeBlend3();
+};
+
+class AnimationNodeTimeScale : public AnimationNode {
+	GDCLASS(AnimationNodeTimeScale, AnimationNode);
+
+	float scale;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+
+	void set_scale(float p_scale);
+	float get_scale() const;
+
+	float process(float p_time, bool p_seek);
+
+	AnimationNodeTimeScale();
+};
+
+class AnimationNodeTimeSeek : public AnimationNode {
+	GDCLASS(AnimationNodeTimeSeek, AnimationNode);
+
+	float seek_pos;
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_caption() const;
+
+	void set_seek_pos(float p_sec);
+	float get_seek_pos() const;
+
+	float process(float p_time, bool p_seek);
+
+	AnimationNodeTimeSeek();
+};
+
+class AnimationNodeTransition : public AnimationNode {
+	GDCLASS(AnimationNodeTransition, AnimationNode);
+
+	enum {
+		MAX_INPUTS = 32
+	};
+	struct InputData {
+
+		String name;
+		bool auto_advance;
+		InputData() { auto_advance = false; }
+	};
+
+	InputData inputs[MAX_INPUTS];
+	int enabled_inputs;
+
+	float prev_time;
+	float prev_xfading;
+	int prev;
+	bool switched;
+
+	float time;
+	int current;
+
+	float xfade;
+
+	void _update_inputs();
+
+protected:
+	static void _bind_methods();
+	void _validate_property(PropertyInfo &property) const;
+
+public:
+	virtual String get_caption() const;
+
+	void set_enabled_inputs(int p_inputs);
+	int get_enabled_inputs();
+
+	void set_input_as_auto_advance(int p_input, bool p_enable);
+	bool is_input_set_as_auto_advance(int p_input) const;
+
+	void set_input_caption(int p_input, const String &p_name);
+	String get_input_caption(int p_input) const;
+
+	void set_current(int p_current);
+	int get_current() const;
+
+	void set_cross_fade_time(float p_fade);
+	float get_cross_fade_time() const;
+
+	float process(float p_time, bool p_seek);
+
+	AnimationNodeTransition();
+};
+
+class AnimationNodeOutput : public AnimationNode {
+	GDCLASS(AnimationNodeOutput, AnimationNode)
+public:
+	virtual String get_caption() const;
+	virtual float process(float p_time, bool p_seek);
+	AnimationNodeOutput();
+};
+
+/////
+
+class AnimationNodeBlendTree : public AnimationRootNode {
+	GDCLASS(AnimationNodeBlendTree, AnimationRootNode)
+
+	Map<StringName, Ref<AnimationNode> > nodes;
+
+	Vector2 graph_offset;
+
+protected:
+	static void _bind_methods();
+	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;
+
+public:
+	enum ConnectionError {
+		CONNECTION_OK,
+		CONNECTION_ERROR_NO_INPUT,
+		CONNECTION_ERROR_NO_INPUT_INDEX,
+		CONNECTION_ERROR_NO_OUTPUT,
+		CONNECTION_ERROR_SAME_NODE,
+		CONNECTION_ERROR_CONNECTION_EXISTS,
+		//no need to check for cycles due to tree topology
+	};
+
+	void add_node(const StringName &p_name, Ref<AnimationNode> p_node);
+	Ref<AnimationNode> get_node(const StringName &p_name) const;
+	void remove_node(const StringName &p_name);
+	void rename_node(const StringName &p_name, const StringName &p_new_name);
+	bool has_node(const StringName &p_name) const;
+	StringName get_node_name(const Ref<AnimationNode> &p_node) const;
+
+	void connect_node(const StringName &p_input_node, int p_input_index, const StringName &p_output_node);
+	void disconnect_node(const StringName &p_node, int p_input_index);
+	float get_connection_activity(const StringName &p_input_node, int p_input_index) const;
+
+	struct NodeConnection {
+		StringName input_node;
+		int input_index;
+		StringName output_node;
+	};
+
+	ConnectionError can_connect_node(const StringName &p_input_node, int p_input_index, const StringName &p_output_node) const;
+	void get_node_connections(List<NodeConnection> *r_connections) const;
+
+	virtual String get_caption() const;
+	virtual float process(float p_time, bool p_seek);
+
+	void get_node_list(List<StringName> *r_list);
+
+	void set_graph_offset(const Vector2 &p_graph_offset);
+	Vector2 get_graph_offset() const;
+
+	virtual void set_graph_player(AnimationGraphPlayer *p_player);
+	AnimationNodeBlendTree();
+	~AnimationNodeBlendTree();
+};
+
+VARIANT_ENUM_CAST(AnimationNodeBlendTree::ConnectionError)
+
+#endif // ANIMATION_BLEND_TREE_H