Remove the max input limit & cleanup AnimationNodeTransition API

doc/classes/AnimationNode.xml

@@ -68,10 +68,10 @@
 			</description>
 		</method>
 		<method name="add_input">
-			<return type="void" />
+			<return type="bool" />
 			<param index="0" name="name" type="String" />
 			<description>
-				Adds an input to the node. This is only useful for nodes created for use in an [AnimationNodeBlendTree].
+				Adds an input to the node. This is only useful for nodes created for use in an [AnimationNodeBlendTree]. If the addition fails, returns [code]false[/code].
 			</description>
 		</method>
 		<method name="blend_animation">
@@ -115,13 +115,20 @@
 				Blend another animation node (in case this node contains children animation nodes). This function is only useful if you inherit from [AnimationRootNode] instead, else editors will not display your node for addition.
 			</description>
 		</method>
+		<method name="find_input" qualifiers="const">
+			<return type="int" />
+			<param index="0" name="name" type="String" />
+			<description>
+				Returns the input index which corresponds to [param name]. If not found, returns [code]-1[/code].
+			</description>
+		</method>
 		<method name="get_input_count" qualifiers="const">
 			<return type="int" />
 			<description>
 				Amount of inputs in this node, only useful for nodes that go into [AnimationNodeBlendTree].
 			</description>
 		</method>
-		<method name="get_input_name">
+		<method name="get_input_name" qualifiers="const">
 			<return type="String" />
 			<param index="0" name="input" type="int" />
 			<description>
@@ -157,6 +164,14 @@
 				Adds or removes a path for the filter.
 			</description>
 		</method>
+		<method name="set_input_name">
+			<return type="bool" />
+			<param index="0" name="input" type="int" />
+			<param index="1" name="name" type="String" />
+			<description>
+				Sets the name of the input at the given [param input] index. If the setting fails, returns [code]false[/code].
+			</description>
+		</method>
 		<method name="set_parameter">
 			<return type="void" />
 			<param index="0" name="name" type="StringName" />

doc/classes/AnimationNodeTransition.xml

@@ -12,20 +12,6 @@
 		<link title="Third Person Shooter Demo">https://godotengine.org/asset-library/asset/678</link>
 	</tutorials>
 	<methods>
-		<method name="find_input_caption" qualifiers="const">
-			<return type="int" />
-			<param index="0" name="caption" type="String" />
-			<description>
-				Returns the input index which corresponds to [param caption]. If not found, returns [code]-1[/code].
-			</description>
-		</method>
-		<method name="get_input_caption" qualifiers="const">
-			<return type="String" />
-			<param index="0" name="input" type="int" />
-			<description>
-				Returns the name of the input at the given [param input] index. This name is displayed in the editor next to the node input.
-			</description>
-		</method>
 		<method name="is_input_set_as_auto_advance" qualifiers="const">
 			<return type="bool" />
 			<param index="0" name="input" type="int" />
@@ -41,18 +27,10 @@
 				Enables or disables auto-advance for the given [param input] index. If enabled, state changes to the next input after playing the animation once. If enabled for the last input state, it loops to the first.
 			</description>
 		</method>
-		<method name="set_input_caption">
-			<return type="void" />
-			<param index="0" name="input" type="int" />
-			<param index="1" name="caption" type="String" />
-			<description>
-				Sets the name of the input at the given [param input] index. This name is displayed in the editor next to the node input.
-			</description>
-		</method>
 	</methods>
 	<members>
-		<member name="enabled_inputs" type="int" setter="set_enabled_inputs" getter="get_enabled_inputs" default="0">
+		<member name="input_count" type="int" setter="set_input_count" getter="get_input_count" default="0">
-			The number of enabled input ports for this node. The maximum is [code]31[/code].
+			The number of enabled input ports for this node.
 		</member>
 		<member name="reset" type="bool" setter="set_reset" getter="is_reset" default="true">
 			If [code]true[/code], the destination animation is played back from the beginning when switched.

scene/animation/animation_blend_tree.cpp

@@ -644,9 +644,62 @@ AnimationNodeTimeSeek::AnimationNodeTimeSeek() {
 
 /////////////////////////////////////////////////
 
+bool AnimationNodeTransition::_set(const StringName &p_path, const Variant &p_value) {
+	String path = p_path;
+
+	if (!path.begins_with("input_")) {
+		return false;
+	}
+
+	int which = path.get_slicec('/', 0).get_slicec('_', 1).to_int();
+	String what = path.get_slicec('/', 1);
+
+	if (which == get_input_count() && what == "name") {
+		if (add_input(p_value)) {
+			return true;
+		}
+		return false;
+	}
+
+	ERR_FAIL_INDEX_V(which, get_input_count(), false);
+
+	if (what == "name") {
+		set_input_name(which, p_value);
+	} else if (what == "auto_advance") {
+		set_input_as_auto_advance(which, p_value);
+	} else {
+		return false;
+	}
+
+	return true;
+}
+
+bool AnimationNodeTransition::_get(const StringName &p_path, Variant &r_ret) const {
+	String path = p_path;
+
+	if (!path.begins_with("input_")) {
+		return false;
+	}
+
+	int which = path.get_slicec('/', 0).get_slicec('_', 1).to_int();
+	String what = path.get_slicec('/', 1);
+
+	ERR_FAIL_INDEX_V(which, get_input_count(), false);
+
+	if (what == "name") {
+		r_ret = get_input_name(which);
+	} else if (what == "auto_advance") {
+		r_ret = is_input_set_as_auto_advance(which);
+	} else {
+		return false;
+	}
+
+	return true;
+}
+
 void AnimationNodeTransition::get_parameter_list(List<PropertyInfo> *r_list) const {
 	String anims;
-	for (int i = 0; i < enabled_inputs; i++) {
+	for (int i = 0; i < get_input_count(); i++) {
 		if (i > 0) {
 			anims += ",";
 		}
@@ -684,56 +737,37 @@ String AnimationNodeTransition::get_caption() const {
 	return "Transition";
 }
 
-void AnimationNodeTransition::_update_inputs() {
+void AnimationNodeTransition::set_input_count(int p_inputs) {
-	while (get_input_count() < enabled_inputs) {
+	for (int i = get_input_count(); i < p_inputs; i++) {
-		add_input(inputs[get_input_count()].name);
+		add_input("state_" + itos(i));
 	}
-
+	while (get_input_count() > p_inputs) {
-	while (get_input_count() > enabled_inputs) {
 		remove_input(get_input_count() - 1);
 	}
+	notify_property_list_changed();
 }
 
-void AnimationNodeTransition::set_enabled_inputs(int p_inputs) {
+bool AnimationNodeTransition::add_input(const String &p_name) {
-	ERR_FAIL_INDEX(p_inputs, MAX_INPUTS);
+	if (AnimationNode::add_input(p_name)) {
-	enabled_inputs = p_inputs;
+		input_as_auto_advance.push_back(false);
-	_update_inputs();
+		return true;
+	}
+	return false;
 }
 
-int AnimationNodeTransition::get_enabled_inputs() {
+void AnimationNodeTransition::remove_input(int p_index) {
-	return enabled_inputs;
+	input_as_auto_advance.remove_at(p_index);
+	AnimationNode::remove_input(p_index);
 }
 
 void AnimationNodeTransition::set_input_as_auto_advance(int p_input, bool p_enable) {
-	ERR_FAIL_INDEX(p_input, MAX_INPUTS);
+	ERR_FAIL_INDEX(p_input, get_input_count());
-	inputs[p_input].auto_advance = p_enable;
+	input_as_auto_advance.write[p_input] = p_enable;
 }
 
 bool AnimationNodeTransition::is_input_set_as_auto_advance(int p_input) const {
-	ERR_FAIL_INDEX_V(p_input, MAX_INPUTS, false);
+	ERR_FAIL_INDEX_V(p_input, get_input_count(), false);
-	return inputs[p_input].auto_advance;
+	return input_as_auto_advance[p_input];
-}
-
-void AnimationNodeTransition::set_input_caption(int p_input, const String &p_name) {
-	ERR_FAIL_INDEX(p_input, MAX_INPUTS);
-	inputs[p_input].name = p_name;
-	set_input_name(p_input, p_name);
-}
-
-String AnimationNodeTransition::get_input_caption(int p_input) const {
-	ERR_FAIL_INDEX_V(p_input, MAX_INPUTS, String());
-	return inputs[p_input].name;
-}
-
-int AnimationNodeTransition::find_input_caption(const String &p_name) const {
-	int idx = -1;
-	for (int i = 0; i < MAX_INPUTS; i++) {
-		if (inputs[i].name == p_name) {
-			idx = i;
-			break;
-		}
-	}
-	return idx;
 }
 
 void AnimationNodeTransition::set_xfade_time(double p_fade) {
@@ -772,7 +806,7 @@ double AnimationNodeTransition::process(double p_time, bool p_seek, bool p_is_ex
 	bool restart = false;
 
 	if (!cur_transition_request.is_empty()) {
-		int new_idx = find_input_caption(cur_transition_request);
+		int new_idx = find_input(cur_transition_request);
 		if (new_idx >= 0) {
 			if (cur_current_index == new_idx) {
 				// Transition to same state.
@@ -807,14 +841,14 @@ double AnimationNodeTransition::process(double p_time, bool p_seek, bool p_is_ex
 		cur_time = 0;
 	}
 
-	if (cur_current_index < 0 || cur_current_index >= enabled_inputs || cur_prev_index >= enabled_inputs) {
+	if (cur_current_index < 0 || cur_current_index >= get_input_count() || cur_prev_index >= get_input_count()) {
 		return 0;
 	}
 
 	double rem = 0.0;
 
 	if (sync) {
-		for (int i = 0; i < enabled_inputs; i++) {
+		for (int i = 0; i < get_input_count(); i++) {
 			if (i != cur_current_index && i != cur_prev_index) {
 				blend_input(i, p_time, p_seek, p_is_external_seeking, 0, FILTER_IGNORE, true);
 			}
@@ -831,8 +865,8 @@ double AnimationNodeTransition::process(double p_time, bool p_seek, bool p_is_ex
 			cur_time += p_time;
 		}
 
-		if (inputs[cur_current_index].auto_advance && rem <= xfade_time) {
+		if (input_as_auto_advance[cur_current_index] && rem <= xfade_time) {
-			set_parameter(transition_request, get_input_caption((cur_current_index + 1) % enabled_inputs));
+			set_parameter(transition_request, get_input_name((cur_current_index + 1) % get_input_count()));
 		}
 
 	} else { // cross-fading from prev to current
@@ -869,29 +903,19 @@ double AnimationNodeTransition::process(double p_time, bool p_seek, bool p_is_ex
 	return rem;
 }
 
-void AnimationNodeTransition::_validate_property(PropertyInfo &p_property) const {
+void AnimationNodeTransition::_get_property_list(List<PropertyInfo> *p_list) const {
-	if (p_property.name.begins_with("input_")) {
+	for (int i = 0; i < get_input_count(); i++) {
-		String n = p_property.name.get_slicec('/', 0).get_slicec('_', 1);
+		p_list->push_back(PropertyInfo(Variant::STRING, "input_" + itos(i) + "/name", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL));
-		if (n != "count") {
+		p_list->push_back(PropertyInfo(Variant::BOOL, "input_" + itos(i) + "/auto_advance", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL));
-			int idx = n.to_int();
-			if (idx >= enabled_inputs) {
-				p_property.usage = PROPERTY_USAGE_NONE;
-			}
-		}
 	}
 }
 
 void AnimationNodeTransition::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("set_enabled_inputs", "amount"), &AnimationNodeTransition::set_enabled_inputs);
+	ClassDB::bind_method(D_METHOD("set_input_count", "input_count"), &AnimationNodeTransition::set_input_count);
-	ClassDB::bind_method(D_METHOD("get_enabled_inputs"), &AnimationNodeTransition::get_enabled_inputs);
 
 	ClassDB::bind_method(D_METHOD("set_input_as_auto_advance", "input", "enable"), &AnimationNodeTransition::set_input_as_auto_advance);
 	ClassDB::bind_method(D_METHOD("is_input_set_as_auto_advance", "input"), &AnimationNodeTransition::is_input_set_as_auto_advance);
 
-	ClassDB::bind_method(D_METHOD("set_input_caption", "input", "caption"), &AnimationNodeTransition::set_input_caption);
-	ClassDB::bind_method(D_METHOD("get_input_caption", "input"), &AnimationNodeTransition::get_input_caption);
-	ClassDB::bind_method(D_METHOD("find_input_caption", "caption"), &AnimationNodeTransition::find_input_caption);
-
 	ClassDB::bind_method(D_METHOD("set_xfade_time", "time"), &AnimationNodeTransition::set_xfade_time);
 	ClassDB::bind_method(D_METHOD("get_xfade_time"), &AnimationNodeTransition::get_xfade_time);
 
@@ -901,21 +925,13 @@ void AnimationNodeTransition::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_reset", "reset"), &AnimationNodeTransition::set_reset);
 	ClassDB::bind_method(D_METHOD("is_reset"), &AnimationNodeTransition::is_reset);
 
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "enabled_inputs", PROPERTY_HINT_RANGE, "0,31,1", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED), "set_enabled_inputs", "get_enabled_inputs");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "xfade_time", PROPERTY_HINT_RANGE, "0,120,0.01,suffix:s"), "set_xfade_time", "get_xfade_time");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "xfade_curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve"), "set_xfade_curve", "get_xfade_curve");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "reset"), "set_reset", "is_reset");
-
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "input_count", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_ARRAY | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED, "Inputs,input_"), "set_input_count", "get_input_count");
-	for (int i = 0; i < MAX_INPUTS; i++) {
-		ADD_PROPERTYI(PropertyInfo(Variant::STRING, "input_" + itos(i) + "/name", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL), "set_input_caption", "get_input_caption", i);
-		ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "input_" + itos(i) + "/auto_advance", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL), "set_input_as_auto_advance", "is_input_set_as_auto_advance", i);
-	}
 }
 
 AnimationNodeTransition::AnimationNodeTransition() {
-	for (int i = 0; i < MAX_INPUTS; i++) {
-		inputs[i].name = "state " + itos(i);
-	}
 }
 
 /////////////////////

scene/animation/animation_blend_tree.h

@@ -276,16 +276,7 @@ public:
 class AnimationNodeTransition : public AnimationNodeSync {
 	GDCLASS(AnimationNodeTransition, AnimationNodeSync);
 
-	enum {
+	Vector<bool> input_as_auto_advance;
-		MAX_INPUTS = 32
-	};
-	struct InputData {
-		String name;
-		bool auto_advance = false;
-	};
-
-	InputData inputs[MAX_INPUTS];
-	int enabled_inputs = 0;
 
 	StringName time = "time";
 	StringName prev_xfading = "prev_xfading";
@@ -301,11 +292,11 @@ class AnimationNodeTransition : public AnimationNodeSync {
 	Ref<Curve> xfade_curve;
 	bool reset = true;
 
-	void _update_inputs();
-
 protected:
+	bool _get(const StringName &p_path, Variant &r_ret) const;
+	bool _set(const StringName &p_path, const Variant &p_value);
 	static void _bind_methods();
-	void _validate_property(PropertyInfo &p_property) const;
+	void _get_property_list(List<PropertyInfo> *p_list) const;
 
 public:
 	virtual void get_parameter_list(List<PropertyInfo> *r_list) const override;
@@ -314,16 +305,14 @@ public:
 
 	virtual String get_caption() const override;
 
-	void set_enabled_inputs(int p_inputs);
+	void set_input_count(int p_inputs);
-	int get_enabled_inputs();
+
+	virtual bool add_input(const String &p_name) override;
+	virtual void remove_input(int p_index) override;
 
 	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;
-	int find_input_caption(const String &p_name) const;
-
 	void set_xfade_time(double p_fade);
 	double get_xfade_time() const;
 

scene/animation/animation_tree.cpp

@@ -303,36 +303,21 @@ double AnimationNode::_blend_node(const StringName &p_subpath, const Vector<Stri
 	return p_node->_pre_process(new_path, new_parent, state, p_time, p_seek, p_is_external_seeking, p_connections);
 }
 
-int AnimationNode::get_input_count() const {
-	return inputs.size();
-}
-
-String AnimationNode::get_input_name(int p_input) {
-	ERR_FAIL_INDEX_V(p_input, inputs.size(), String());
-	return inputs[p_input].name;
-}
-
 String AnimationNode::get_caption() const {
 	String ret = "Node";
 	GDVIRTUAL_CALL(_get_caption, ret);
 	return ret;
 }
 
-void AnimationNode::add_input(const String &p_name) {
+bool AnimationNode::add_input(const String &p_name) {
 	//root nodes can't add inputs
-	ERR_FAIL_COND(Object::cast_to<AnimationRootNode>(this) != nullptr);
+	ERR_FAIL_COND_V(Object::cast_to<AnimationRootNode>(this) != nullptr, false);
 	Input input;
-	ERR_FAIL_COND(p_name.contains(".") || p_name.contains("/"));
+	ERR_FAIL_COND_V(p_name.contains(".") || p_name.contains("/"), false);
 	input.name = p_name;
 	inputs.push_back(input);
 	emit_changed();
-}
+	return true;
-
-void AnimationNode::set_input_name(int p_input, const String &p_name) {
-	ERR_FAIL_INDEX(p_input, inputs.size());
-	ERR_FAIL_COND(p_name.contains(".") || p_name.contains("/"));
-	inputs.write[p_input].name = p_name;
-	emit_changed();
 }
 
 void AnimationNode::remove_input(int p_index) {
@@ -341,6 +326,34 @@ void AnimationNode::remove_input(int p_index) {
 	emit_changed();
 }
 
+bool AnimationNode::set_input_name(int p_input, const String &p_name) {
+	ERR_FAIL_INDEX_V(p_input, inputs.size(), false);
+	ERR_FAIL_COND_V(p_name.contains(".") || p_name.contains("/"), false);
+	inputs.write[p_input].name = p_name;
+	emit_changed();
+	return true;
+}
+
+String AnimationNode::get_input_name(int p_input) const {
+	ERR_FAIL_INDEX_V(p_input, inputs.size(), String());
+	return inputs[p_input].name;
+}
+
+int AnimationNode::get_input_count() const {
+	return inputs.size();
+}
+
+int AnimationNode::find_input(const String &p_name) const {
+	int idx = -1;
+	for (int i = 0; i < inputs.size(); i++) {
+		if (inputs[i].name == p_name) {
+			idx = i;
+			break;
+		}
+	}
+	return idx;
+}
+
 double AnimationNode::process(double p_time, bool p_seek, bool p_is_external_seeking) {
 	double ret = 0;
 	GDVIRTUAL_CALL(_process, p_time, p_seek, p_is_external_seeking, ret);
@@ -404,11 +417,12 @@ Ref<AnimationNode> AnimationNode::get_child_by_name(const StringName &p_name) {
 }
 
 void AnimationNode::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("get_input_count"), &AnimationNode::get_input_count);
-	ClassDB::bind_method(D_METHOD("get_input_name", "input"), &AnimationNode::get_input_name);
-
 	ClassDB::bind_method(D_METHOD("add_input", "name"), &AnimationNode::add_input);
 	ClassDB::bind_method(D_METHOD("remove_input", "index"), &AnimationNode::remove_input);
+	ClassDB::bind_method(D_METHOD("set_input_name", "input", "name"), &AnimationNode::set_input_name);
+	ClassDB::bind_method(D_METHOD("get_input_name", "input"), &AnimationNode::get_input_name);
+	ClassDB::bind_method(D_METHOD("get_input_count"), &AnimationNode::get_input_count);
+	ClassDB::bind_method(D_METHOD("find_input", "name"), &AnimationNode::find_input);
 
 	ClassDB::bind_method(D_METHOD("set_filter_path", "path", "enable"), &AnimationNode::set_filter_path);
 	ClassDB::bind_method(D_METHOD("is_path_filtered", "path"), &AnimationNode::is_path_filtered);

scene/animation/animation_tree.h

@@ -141,12 +141,12 @@ public:
 	virtual double process(double p_time, bool p_seek, bool p_is_external_seeking);
 	virtual String get_caption() const;
 
+	virtual bool add_input(const String &p_name);
+	virtual void remove_input(int p_index);
+	virtual bool set_input_name(int p_input, const String &p_name);
+	virtual String get_input_name(int p_input) const;
 	int get_input_count() const;
-	String get_input_name(int p_input);
+	int find_input(const String &p_name) const;
-
-	void add_input(const String &p_name);
-	void set_input_name(int p_input, const String &p_name);
-	void remove_input(int p_index);
 
 	void set_filter_path(const NodePath &p_path, bool p_enable);
 	bool is_path_filtered(const NodePath &p_path) const;