1 files changed, 196 insertions, 111 deletions

diff --git a/scene/animation/tween.h b/scene/animation/tween.h
index 142c0c65e0..947cdb7c2d 100644
--- a/scene/animation/tween.h
+++ b/scene/animation/tween.h
@@ -31,10 +31,33 @@
 #ifndef TWEEN_H
 #define TWEEN_H
 
-#include "scene/main/node.h"
+#include "core/object/ref_counted.h"
 
-class Tween : public Node {
-	GDCLASS(Tween, Node);
+class Tween;
+class Node;
+
+class Tweener : public RefCounted {
+	GDCLASS(Tweener, RefCounted);
+
+public:
+	virtual void set_tween(Ref<Tween> p_tween);
+	virtual void start() = 0;
+	virtual bool step(float &r_delta) = 0;
+
+protected:
+	static void _bind_methods();
+	Ref<Tween> tween;
+	float elapsed_time = 0;
+	bool finished = false;
+};
+
+class PropertyTweener;
+class IntervalTweener;
+class CallbackTweener;
+class MethodTweener;
+
+class Tween : public RefCounted {
+	GDCLASS(Tween, RefCounted);
 
 public:
 	enum TweenProcessMode {
@@ -42,6 +65,12 @@ public:
 		TWEEN_PROCESS_IDLE,
 	};
 
+	enum TweenPauseMode {
+		TWEEN_PAUSE_BOUND,
+		TWEEN_PAUSE_STOP,
+		TWEEN_PAUSE_PROCESS,
+	};
+
 	enum TransitionType {
 		TRANS_LINEAR,
 		TRANS_SINE,
@@ -54,8 +83,7 @@ public:
 		TRANS_CIRC,
 		TRANS_BOUNCE,
 		TRANS_BACK,
-
-		TRANS_COUNT,
+		TRANS_MAX
 	};
 
 	enum EaseType {
@@ -63,130 +91,187 @@ public:
 		EASE_OUT,
 		EASE_IN_OUT,
 		EASE_OUT_IN,
-
-		EASE_COUNT,
+		EASE_MAX
 	};
 
 private:
-	enum InterpolateType {
-		INTER_PROPERTY,
-		INTER_METHOD,
-		FOLLOW_PROPERTY,
-		FOLLOW_METHOD,
-		TARGETING_PROPERTY,
-		TARGETING_METHOD,
-		INTER_CALLBACK,
-	};
+	TweenProcessMode process_mode = TweenProcessMode::TWEEN_PROCESS_IDLE;
+	TweenPauseMode pause_mode = TweenPauseMode::TWEEN_PAUSE_STOP;
+	TransitionType default_transition = TransitionType::TRANS_LINEAR;
+	EaseType default_ease = EaseType::EASE_IN_OUT;
+	ObjectID bound_node;
 
-	struct InterpolateData {
-		bool active = false;
-		InterpolateType type = INTER_CALLBACK;
-		bool finish = false;
-		bool call_deferred = false;
-		real_t elapsed = 0.0;
-		ObjectID id;
-		Vector<StringName> key;
-		StringName concatenated_key;
-		Variant initial_val;
-		Variant delta_val;
-		Variant final_val;
-		ObjectID target_id;
-		Vector<StringName> target_key;
-		real_t duration = 0.0;
-		TransitionType trans_type = TransitionType::TRANS_BACK;
-		EaseType ease_type = EaseType::EASE_COUNT;
-		real_t delay = 0.0;
-		int args = 0;
-		Variant arg[5];
-		int uid = 0;
-	};
+	Vector<List<Ref<Tweener>>> tweeners;
+	int current_step = -1;
+	int loops = 1;
+	int loops_done = 0;
+	float speed_scale = 1;
 
-	String autoplay;
-	TweenProcessMode tween_process_mode = TWEEN_PROCESS_IDLE;
-	bool repeat = false;
-	float speed_scale = 1.0;
-	mutable int pending_update = 0;
-	int uid = 0;
-	bool was_stopped = false;
+	bool is_bound = false;
+	bool started = false;
+	bool running = true;
+	bool dead = false;
+	bool invalid = true;
+	bool default_parallel = false;
+	bool parallel_enabled = false;
 
-	List<InterpolateData> interpolates;
+	typedef real_t (*interpolater)(real_t t, real_t b, real_t c, real_t d);
+	static interpolater interpolaters[TRANS_MAX][EASE_MAX];
 
-	struct PendingCommand {
-		StringName key;
-		int args = 0;
-		Variant arg[10];
-	};
-	List<PendingCommand> pending_commands;
+	void start_tweeners();
 
-	void _add_pending_command(StringName p_key, const Variant &p_arg1 = Variant(), const Variant &p_arg2 = Variant(), const Variant &p_arg3 = Variant(), const Variant &p_arg4 = Variant(), const Variant &p_arg5 = Variant(), const Variant &p_arg6 = Variant(), const Variant &p_arg7 = Variant(), const Variant &p_arg8 = Variant(), const Variant &p_arg9 = Variant(), const Variant &p_arg10 = Variant());
-	void _process_pending_commands();
+protected:
+	static void _bind_methods();
 
-	typedef real_t (*interpolater)(real_t t, real_t b, real_t c, real_t d);
-	static interpolater interpolaters[TRANS_COUNT][EASE_COUNT];
+public:
+	Ref<PropertyTweener> tween_property(Object *p_target, NodePath p_property, Variant p_to, float p_duration);
+	Ref<IntervalTweener> tween_interval(float p_time);
+	Ref<CallbackTweener> tween_callback(Callable p_callback);
+	Ref<MethodTweener> tween_method(Callable p_callback, float p_from, float p_to, float p_duration);
+	Ref<Tween> append(Ref<Tweener> p_tweener);
 
-	real_t _run_equation(TransitionType p_trans_type, EaseType p_ease_type, real_t t, real_t b, real_t c, real_t d);
-	Variant &_get_delta_val(InterpolateData &p_data);
-	Variant _get_initial_val(const InterpolateData &p_data) const;
-	Variant _get_final_val(const InterpolateData &p_data) const;
-	Variant _run_equation(InterpolateData &p_data);
-	bool _calc_delta_val(const Variant &p_initial_val, const Variant &p_final_val, Variant &p_delta_val);
-	bool _apply_tween_value(InterpolateData &p_data, Variant &value);
+	bool custom_step(float p_delta);
+	void stop();
+	void pause();
+	void play();
+	void kill();
 
-	void _tween_process(float p_delta);
-	void _remove_by_uid(int uid);
-	void _push_interpolate_data(InterpolateData &p_data);
-	void _build_interpolation(InterpolateType p_interpolation_type, Object *p_object, NodePath *p_property, StringName *p_method, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay);
+	bool is_running();
+	void set_valid(bool p_valid);
+	bool is_valid();
 
-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);
+	Ref<Tween> bind_node(Node *p_node);
+	Ref<Tween> set_process_mode(TweenProcessMode p_mode);
+	TweenProcessMode get_process_mode();
+	Ref<Tween> set_pause_mode(TweenPauseMode p_mode);
+	TweenPauseMode get_pause_mode();
 
-	static void _bind_methods();
+	Ref<Tween> set_parallel(bool p_parallel);
+	Ref<Tween> set_loops(int p_loops);
+	Ref<Tween> set_speed_scale(float p_speed);
+	Ref<Tween> set_trans(TransitionType p_trans);
+	TransitionType get_trans();
+	Ref<Tween> set_ease(EaseType p_ease);
+	EaseType get_ease();
 
-public:
-	bool is_active() const;
-	void set_active(bool p_active);
-
-	bool is_repeat() const;
-	void set_repeat(bool p_repeat);
-
-	void set_tween_process_mode(TweenProcessMode p_mode);
-	TweenProcessMode get_tween_process_mode() const;
-
-	void set_speed_scale(float p_speed);
-	float get_speed_scale() const;
-
-	void start();
-	void reset(Object *p_object, StringName p_key);
-	void reset_all();
-	void stop(Object *p_object, StringName p_key);
-	void stop_all();
-	void resume(Object *p_object, StringName p_key);
-	void resume_all();
-	void remove(Object *p_object, StringName p_key);
-	void remove_all();
-
-	void seek(real_t p_time);
-	real_t tell() const;
-	real_t get_runtime() const;
-
-	void interpolate_property(Object *p_object, NodePath p_property, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-	void interpolate_method(Object *p_object, StringName p_method, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-	void interpolate_callback(Object *p_object, real_t p_duration, String p_callback, VARIANT_ARG_DECLARE);
-	void interpolate_deferred_callback(Object *p_object, real_t p_duration, String p_callback, VARIANT_ARG_DECLARE);
-	void follow_property(Object *p_object, NodePath p_property, Variant p_initial_val, Object *p_target, NodePath p_target_property, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-	void follow_method(Object *p_object, StringName p_method, Variant p_initial_val, Object *p_target, StringName p_target_method, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-	void targeting_property(Object *p_object, NodePath p_property, Object *p_initial, NodePath p_initial_property, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-	void targeting_method(Object *p_object, StringName p_method, Object *p_initial, StringName p_initial_method, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
-
-	Tween();
-	~Tween();
+	Ref<Tween> parallel();
+	Ref<Tween> chain();
+
+	real_t run_equation(TransitionType p_trans_type, EaseType p_ease_type, real_t t, real_t b, real_t c, real_t d);
+	Variant interpolate_variant(Variant p_initial_val, Variant p_delta_val, float p_time, float p_duration, Tween::TransitionType p_trans, Tween::EaseType p_ease);
+	Variant calculate_delta_value(Variant p_intial_val, Variant p_final_val);
+
+	bool step(float p_delta);
+	bool should_pause();
+
+	Tween() {}
 };
 
+VARIANT_ENUM_CAST(Tween::TweenPauseMode);
 VARIANT_ENUM_CAST(Tween::TweenProcessMode);
 VARIANT_ENUM_CAST(Tween::TransitionType);
 VARIANT_ENUM_CAST(Tween::EaseType);
 
+class PropertyTweener : public Tweener {
+	GDCLASS(PropertyTweener, Tweener);
+
+public:
+	Ref<PropertyTweener> from(Variant p_value);
+	Ref<PropertyTweener> from_current();
+	Ref<PropertyTweener> as_relative();
+	Ref<PropertyTweener> set_trans(Tween::TransitionType p_trans);
+	Ref<PropertyTweener> set_ease(Tween::EaseType p_ease);
+	Ref<PropertyTweener> set_delay(float p_delay);
+
+	void set_tween(Ref<Tween> p_tween) override;
+	void start() override;
+	bool step(float &r_delta) override;
+
+	PropertyTweener(Object *p_target, NodePath p_property, Variant p_to, float p_duration);
+	PropertyTweener();
+
+protected:
+	static void _bind_methods();
+
+private:
+	ObjectID target;
+	Vector<StringName> property;
+	Variant initial_val;
+	Variant base_final_val;
+	Variant final_val;
+	Variant delta_val;
+
+	float duration = 0;
+	Tween::TransitionType trans_type = Tween::TRANS_MAX; // This is set inside set_tween();
+	Tween::EaseType ease_type = Tween::EASE_MAX;
+
+	float delay = 0;
+	bool do_continue = true;
+	bool relative = false;
+};
+
+class IntervalTweener : public Tweener {
+	GDCLASS(IntervalTweener, Tweener);
+
+public:
+	void start() override;
+	bool step(float &r_delta) override;
+
+	IntervalTweener(float p_time);
+	IntervalTweener();
+
+private:
+	float duration = 0;
+};
+
+class CallbackTweener : public Tweener {
+	GDCLASS(CallbackTweener, Tweener);
+
+public:
+	Ref<CallbackTweener> set_delay(float p_delay);
+
+	void start() override;
+	bool step(float &r_delta) override;
+
+	CallbackTweener(Callable p_callback);
+	CallbackTweener();
+
+protected:
+	static void _bind_methods();
+
+private:
+	Callable callback;
+	float delay = 0;
+};
+
+class MethodTweener : public Tweener {
+	GDCLASS(MethodTweener, Tweener);
+
+public:
+	Ref<MethodTweener> set_trans(Tween::TransitionType p_trans);
+	Ref<MethodTweener> set_ease(Tween::EaseType p_ease);
+	Ref<MethodTweener> set_delay(float p_delay);
+
+	void set_tween(Ref<Tween> p_tween) override;
+	void start() override;
+	bool step(float &r_delta) override;
+
+	MethodTweener(Callable p_callback, float p_from, float p_to, float p_duration);
+	MethodTweener();
+
+protected:
+	static void _bind_methods();
+
+private:
+	float duration = 0;
+	float delay = 0;
+	Tween::TransitionType trans_type = Tween::TRANS_MAX;
+	Tween::EaseType ease_type = Tween::EASE_MAX;
+
+	Ref<Tween> tween;
+	Variant initial_val;
+	Variant delta_val;
+	Callable callback;
+};
+
 #endif