Some code changed with Clang-Tidy

35 files changed, 167 insertions, 228 deletions

diff --git a/scene/2d/animated_sprite.cpp b/scene/2d/animated_sprite.cpp
index 5bf70e12b7..b7ace804ef 100644
--- a/scene/2d/animated_sprite.cpp
+++ b/scene/2d/animated_sprite.cpp
@@ -69,10 +69,7 @@ bool AnimatedSprite::_edit_use_rect() const {
 	Ref<Texture> t;
 	if (animation)
 		t = frames->get_frame(animation, frame);
-	if (t.is_null())
-		return false;
-
-	return true;
+	return t.is_valid();
 }
 
 Rect2 AnimatedSprite::get_anchorable_rect() const {
diff --git a/scene/2d/audio_stream_player_2d.cpp b/scene/2d/audio_stream_player_2d.cpp
index 73f583111b..932af469d0 100644
--- a/scene/2d/audio_stream_player_2d.cpp
+++ b/scene/2d/audio_stream_player_2d.cpp
@@ -457,8 +457,8 @@ void AudioStreamPlayer2D::set_stream_paused(bool p_pause) {
 
 	if (p_pause != stream_paused) {
 		stream_paused = p_pause;
-		stream_paused_fade_in = p_pause ? false : true;
-		stream_paused_fade_out = p_pause ? true : false;
+		stream_paused_fade_in = !p_pause;
+		stream_paused_fade_out = p_pause;
 	}
 }
 
diff --git a/scene/2d/canvas_item.h b/scene/2d/canvas_item.h
index 1f585d84ce..2604eb04e4 100644
--- a/scene/2d/canvas_item.h
+++ b/scene/2d/canvas_item.h
@@ -143,7 +143,7 @@ public:
 	void set_particles_anim_v_frames(int p_frames);
 	int get_particles_anim_v_frames() const;
 
-	void set_particles_anim_loop(bool p_frames);
+	void set_particles_anim_loop(bool p_loop);
 	bool get_particles_anim_loop() const;
 
 	static void init_shaders();
diff --git a/scene/2d/cpu_particles_2d.h b/scene/2d/cpu_particles_2d.h
index 6c83abb311..813f5ddc6e 100644
--- a/scene/2d/cpu_particles_2d.h
+++ b/scene/2d/cpu_particles_2d.h
@@ -252,7 +252,7 @@ public:
 	void set_color(const Color &p_color);
 	Color get_color() const;
 
-	void set_color_ramp(const Ref<Gradient> &p_texture);
+	void set_color_ramp(const Ref<Gradient> &p_ramp);
 	Ref<Gradient> get_color_ramp() const;
 
 	void set_particle_flag(Flags p_flag, bool p_enable);
diff --git a/scene/2d/line_2d.cpp b/scene/2d/line_2d.cpp
index 5ba184b324..4488dc501c 100644
--- a/scene/2d/line_2d.cpp
+++ b/scene/2d/line_2d.cpp
@@ -38,8 +38,7 @@ VARIANT_ENUM_CAST(Line2D::LineJointMode)
 VARIANT_ENUM_CAST(Line2D::LineCapMode)
 VARIANT_ENUM_CAST(Line2D::LineTextureMode)
 
-Line2D::Line2D() :
-		Node2D() {
+Line2D::Line2D() {
 	_joint_mode = LINE_JOINT_SHARP;
 	_begin_cap_mode = LINE_CAP_NONE;
 	_end_cap_mode = LINE_CAP_NONE;
diff --git a/scene/2d/physics_body_2d.h b/scene/2d/physics_body_2d.h
index 89dd1e5341..66e5ce250f 100644
--- a/scene/2d/physics_body_2d.h
+++ b/scene/2d/physics_body_2d.h
@@ -157,8 +157,8 @@ private:
 		bool operator<(const ShapePair &p_sp) const {
 			if (body_shape == p_sp.body_shape)
 				return local_shape < p_sp.local_shape;
-			else
-				return body_shape < p_sp.body_shape;
+
+			return body_shape < p_sp.body_shape;
 		}
 
 		ShapePair() {}
diff --git a/scene/2d/sprite.cpp b/scene/2d/sprite.cpp
index a8c7622828..6626fccf1c 100644
--- a/scene/2d/sprite.cpp
+++ b/scene/2d/sprite.cpp
@@ -63,10 +63,7 @@ Rect2 Sprite::_edit_get_rect() const {
 }
 
 bool Sprite::_edit_use_rect() const {
-	if (texture.is_null())
-		return false;
-
-	return true;
+	return texture.is_valid();
 }
 
 Rect2 Sprite::get_anchorable_rect() const {
diff --git a/scene/3d/audio_stream_player_3d.cpp b/scene/3d/audio_stream_player_3d.cpp
index ff8c218575..ff28f60d4f 100644
--- a/scene/3d/audio_stream_player_3d.cpp
+++ b/scene/3d/audio_stream_player_3d.cpp
@@ -93,7 +93,7 @@ void AudioStreamPlayer3D::_mix_audio() {
 		}
 
 		bool interpolate_filter = !started;
-		;
+
 		if (!found) {
 			//create new if was not used before
 			if (prev_output_count < MAX_OUTPUTS) {
@@ -872,8 +872,8 @@ void AudioStreamPlayer3D::set_stream_paused(bool p_pause) {
 
 	if (p_pause != stream_paused) {
 		stream_paused = p_pause;
-		stream_paused_fade_in = stream_paused ? false : true;
-		stream_paused_fade_out = stream_paused ? true : false;
+		stream_paused_fade_in = !stream_paused;
+		stream_paused_fade_out = stream_paused;
 	}
 }
 
diff --git a/scene/3d/camera.h b/scene/3d/camera.h
index c0a4f77435..6460f17e85 100644
--- a/scene/3d/camera.h
+++ b/scene/3d/camera.h
@@ -113,7 +113,7 @@ public:
 
 	void set_perspective(float p_fovy_degrees, float p_z_near, float p_z_far);
 	void set_orthogonal(float p_size, float p_z_near, float p_z_far);
-	void set_frustum(float p_size, Vector2 p_offset, float p_near, float p_far);
+	void set_frustum(float p_size, Vector2 p_offset, float p_z_near, float p_z_far);
 	void set_projection(Camera::Projection p_mode);
 
 	void make_current();
diff --git a/scene/3d/cpu_particles.h b/scene/3d/cpu_particles.h
index 6f267102fa..6566792def 100644
--- a/scene/3d/cpu_particles.h
+++ b/scene/3d/cpu_particles.h
@@ -249,7 +249,7 @@ public:
 	void set_color(const Color &p_color);
 	Color get_color() const;
 
-	void set_color_ramp(const Ref<Gradient> &p_texture);
+	void set_color_ramp(const Ref<Gradient> &p_ramp);
 	Ref<Gradient> get_color_ramp() const;
 
 	void set_particle_flag(Flags p_flag, bool p_enable);
diff --git a/scene/3d/soft_body.cpp b/scene/3d/soft_body.cpp
index 909d4fda34..a9d96292a1 100644
--- a/scene/3d/soft_body.cpp
+++ b/scene/3d/soft_body.cpp
@@ -699,7 +699,6 @@ bool SoftBody::is_ray_pickable() const {
 }
 
 SoftBody::SoftBody() :
-		MeshInstance(),
 		physics_rid(PhysicsServer::get_singleton()->soft_body_create()),
 		mesh_owner(false),
 		collision_mask(1),
diff --git a/scene/3d/vehicle_body.cpp b/scene/3d/vehicle_body.cpp
index 32b8219ee0..71136fc0f6 100644
--- a/scene/3d/vehicle_body.cpp
+++ b/scene/3d/vehicle_body.cpp
@@ -723,7 +723,7 @@ void VehicleBody::_update_friction(PhysicsDirectBodyState *s) {
 			real_t rollingFriction = 0.f;
 
 			if (wheelInfo.m_raycastInfo.m_isInContact) {
-				if (engine_force != 0.f && wheelInfo.engine_traction != false) {
+				if (engine_force != 0.f && wheelInfo.engine_traction) {
 					rollingFriction = -engine_force * s->get_step();
 				} else {
 					real_t defaultRollingFrictionImpulse = 0.f;
@@ -928,8 +928,7 @@ void VehicleBody::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "steering", PROPERTY_HINT_RANGE, "-180,180.0,0.01"), "set_steering", "get_steering");
 }
 
-VehicleBody::VehicleBody() :
-		RigidBody() {
+VehicleBody::VehicleBody() {
 
 	m_pitchControl = 0;
 	m_currentVehicleSpeedKmHour = real_t(0.);
diff --git a/scene/3d/voxel_light_baker.cpp b/scene/3d/voxel_light_baker.cpp
index 75b419ca58..5fa8c43f9f 100644
--- a/scene/3d/voxel_light_baker.cpp
+++ b/scene/3d/voxel_light_baker.cpp
@@ -212,9 +212,7 @@ static bool fast_tri_box_overlap(const Vector3 &boxcenter, const Vector3 boxhalf
 	/*  compute plane equation of triangle: normal*x+d=0 */
 	normal = e0.cross(e1);
 	d = -normal.dot(v0); /* plane eq: normal.x+d=0 */
-	if (!planeBoxOverlap(normal, d, boxhalfsize)) return false;
-
-	return true; /* box and triangle overlaps */
+	return planeBoxOverlap(normal, d, boxhalfsize); /* if true, box and triangle overlaps */
 }
 
 static _FORCE_INLINE_ void get_uv_and_normal(const Vector3 &p_pos, const Vector3 *p_vtx, const Vector2 *p_uv, const Vector3 *p_normal, Vector2 &r_uv, Vector3 &r_normal) {
diff --git a/scene/animation/animation_node_state_machine.cpp b/scene/animation/animation_node_state_machine.cpp
index a2411743d4..f1ce948c43 100644
--- a/scene/animation/animation_node_state_machine.cpp
+++ b/scene/animation/animation_node_state_machine.cpp
@@ -178,11 +178,11 @@ float AnimationNodeStateMachinePlayback::get_current_length() const {
 	return len_current;
 }
 
-bool AnimationNodeStateMachinePlayback::_travel(AnimationNodeStateMachine *sm, const StringName &p_travel) {
+bool AnimationNodeStateMachinePlayback::_travel(AnimationNodeStateMachine *p_state_machine, const StringName &p_travel) {
 
 	ERR_FAIL_COND_V(!playing, false);
-	ERR_FAIL_COND_V(!sm->states.has(p_travel), false);
-	ERR_FAIL_COND_V(!sm->states.has(current), false);
+	ERR_FAIL_COND_V(!p_state_machine->states.has(p_travel), false);
+	ERR_FAIL_COND_V(!p_state_machine->states.has(current), false);
 
 	path.clear(); //a new one will be needed
 
@@ -191,25 +191,25 @@ bool AnimationNodeStateMachinePlayback::_travel(AnimationNodeStateMachine *sm, c
 
 	loops_current = 0; // reset loops, so fade does not happen immediately
 
-	Vector2 current_pos = sm->states[current].position;
-	Vector2 target_pos = sm->states[p_travel].position;
+	Vector2 current_pos = p_state_machine->states[current].position;
+	Vector2 target_pos = p_state_machine->states[p_travel].position;
 
 	Map<StringName, AStarCost> cost_map;
 
 	List<int> open_list;
 
 	//build open list
-	for (int i = 0; i < sm->transitions.size(); i++) {
-		if (sm->transitions[i].from == current) {
+	for (int i = 0; i < p_state_machine->transitions.size(); i++) {
+		if (p_state_machine->transitions[i].from == current) {
 			open_list.push_back(i);
-			float cost = sm->states[sm->transitions[i].to].position.distance_to(current_pos);
-			cost *= sm->transitions[i].transition->get_priority();
+			float cost = p_state_machine->states[p_state_machine->transitions[i].to].position.distance_to(current_pos);
+			cost *= p_state_machine->transitions[i].transition->get_priority();
 			AStarCost ap;
 			ap.prev = current;
 			ap.distance = cost;
-			cost_map[sm->transitions[i].to] = ap;
+			cost_map[p_state_machine->transitions[i].to] = ap;
 
-			if (sm->transitions[i].to == p_travel) { //prematurely found it! :D
+			if (p_state_machine->transitions[i].to == p_travel) { //prematurely found it! :D
 				path.push_back(p_travel);
 				return true;
 			}
@@ -230,42 +230,42 @@ bool AnimationNodeStateMachinePlayback::_travel(AnimationNodeStateMachine *sm, c
 
 		for (List<int>::Element *E = open_list.front(); E; E = E->next()) {
 
-			float cost = cost_map[sm->transitions[E->get()].to].distance;
-			cost += sm->states[sm->transitions[E->get()].to].position.distance_to(target_pos);
+			float cost = cost_map[p_state_machine->transitions[E->get()].to].distance;
+			cost += p_state_machine->states[p_state_machine->transitions[E->get()].to].position.distance_to(target_pos);
 
 			if (cost < least_cost) {
 				least_cost_transition = E;
 			}
 		}
 
-		StringName transition_prev = sm->transitions[least_cost_transition->get()].from;
-		StringName transition = sm->transitions[least_cost_transition->get()].to;
+		StringName transition_prev = p_state_machine->transitions[least_cost_transition->get()].from;
+		StringName transition = p_state_machine->transitions[least_cost_transition->get()].to;
 
-		for (int i = 0; i < sm->transitions.size(); i++) {
-			if (sm->transitions[i].from != transition || sm->transitions[i].to == transition_prev) {
+		for (int i = 0; i < p_state_machine->transitions.size(); i++) {
+			if (p_state_machine->transitions[i].from != transition || p_state_machine->transitions[i].to == transition_prev) {
 				continue; //not interested on those
 			}
 
-			float distance = sm->states[sm->transitions[i].from].position.distance_to(sm->states[sm->transitions[i].to].position);
-			distance *= sm->transitions[i].transition->get_priority();
-			distance += cost_map[sm->transitions[i].from].distance;
+			float distance = p_state_machine->states[p_state_machine->transitions[i].from].position.distance_to(p_state_machine->states[p_state_machine->transitions[i].to].position);
+			distance *= p_state_machine->transitions[i].transition->get_priority();
+			distance += cost_map[p_state_machine->transitions[i].from].distance;
 
-			if (cost_map.has(sm->transitions[i].to)) {
+			if (cost_map.has(p_state_machine->transitions[i].to)) {
 				//oh this was visited already, can we win the cost?
-				if (distance < cost_map[sm->transitions[i].to].distance) {
-					cost_map[sm->transitions[i].to].distance = distance;
-					cost_map[sm->transitions[i].to].prev = sm->transitions[i].from;
+				if (distance < cost_map[p_state_machine->transitions[i].to].distance) {
+					cost_map[p_state_machine->transitions[i].to].distance = distance;
+					cost_map[p_state_machine->transitions[i].to].prev = p_state_machine->transitions[i].from;
 				}
 			} else {
 				//add to open list
 				AStarCost ac;
-				ac.prev = sm->transitions[i].from;
+				ac.prev = p_state_machine->transitions[i].from;
 				ac.distance = distance;
-				cost_map[sm->transitions[i].to] = ac;
+				cost_map[p_state_machine->transitions[i].to] = ac;
 
 				open_list.push_back(i);
 
-				if (sm->transitions[i].to == p_travel) {
+				if (p_state_machine->transitions[i].to == p_travel) {
 					found_route = true;
 					break;
 				}
@@ -291,12 +291,12 @@ bool AnimationNodeStateMachinePlayback::_travel(AnimationNodeStateMachine *sm, c
 	return true;
 }
 
-float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm, float p_time, bool p_seek) {
+float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *p_state_machine, float p_time, bool p_seek) {
 
 	//if not playing and it can restart, then restart
 	if (!playing && start_request == StringName()) {
-		if (!stop_request && sm->start_node) {
-			start(sm->start_node);
+		if (!stop_request && p_state_machine->start_node) {
+			start(p_state_machine->start_node);
 		} else {
 			return 0;
 		}
@@ -320,7 +320,7 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 				ERR_FAIL_V(0);
 			}
 
-			if (!_travel(sm, start_request)) {
+			if (!_travel(p_state_machine, start_request)) {
 				//can't travel, then teleport
 				path.clear();
 				current = start_request;
@@ -339,16 +339,16 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 
 	if (do_start) {
 
-		if (sm->start_node != StringName() && p_seek && p_time == 0) {
-			current = sm->start_node;
+		if (p_state_machine->start_node != StringName() && p_seek && p_time == 0) {
+			current = p_state_machine->start_node;
 		}
 
-		len_current = sm->blend_node(current, sm->states[current].node, 0, true, 1.0, AnimationNode::FILTER_IGNORE, false);
+		len_current = p_state_machine->blend_node(current, p_state_machine->states[current].node, 0, true, 1.0, AnimationNode::FILTER_IGNORE, false);
 		pos_current = 0;
 		loops_current = 0;
 	}
 
-	if (!sm->states.has(current)) {
+	if (!p_state_machine->states.has(current)) {
 		playing = false; //current does not exist
 		current = StringName();
 		return 0;
@@ -357,7 +357,7 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 
 	if (fading_from != StringName()) {
 
-		if (!sm->states.has(fading_from)) {
+		if (!p_state_machine->states.has(fading_from)) {
 			fading_from = StringName();
 		} else {
 			if (!p_seek) {
@@ -370,11 +370,11 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 		}
 	}
 
-	float rem = sm->blend_node(current, sm->states[current].node, p_time, p_seek, fade_blend, AnimationNode::FILTER_IGNORE, false);
+	float rem = p_state_machine->blend_node(current, p_state_machine->states[current].node, p_time, p_seek, fade_blend, AnimationNode::FILTER_IGNORE, false);
 
 	if (fading_from != StringName()) {
 
-		sm->blend_node(fading_from, sm->states[fading_from].node, p_time, p_seek, 1.0 - fade_blend, AnimationNode::FILTER_IGNORE, false);
+		p_state_machine->blend_node(fading_from, p_state_machine->states[fading_from].node, p_time, p_seek, 1.0 - fade_blend, AnimationNode::FILTER_IGNORE, false);
 	}
 
 	//guess playback position
@@ -399,40 +399,40 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 
 	if (path.size()) {
 
-		for (int i = 0; i < sm->transitions.size(); i++) {
-			if (sm->transitions[i].from == current && sm->transitions[i].to == path[0]) {
-				next_xfade = sm->transitions[i].transition->get_xfade_time();
-				switch_mode = sm->transitions[i].transition->get_switch_mode();
+		for (int i = 0; i < p_state_machine->transitions.size(); i++) {
+			if (p_state_machine->transitions[i].from == current && p_state_machine->transitions[i].to == path[0]) {
+				next_xfade = p_state_machine->transitions[i].transition->get_xfade_time();
+				switch_mode = p_state_machine->transitions[i].transition->get_switch_mode();
 				next = path[0];
 			}
 		}
 	} else {
 		float priority_best = 1e20;
 		int auto_advance_to = -1;
-		for (int i = 0; i < sm->transitions.size(); i++) {
+		for (int i = 0; i < p_state_machine->transitions.size(); i++) {
 
 			bool auto_advance = false;
-			if (sm->transitions[i].transition->has_auto_advance()) {
+			if (p_state_machine->transitions[i].transition->has_auto_advance()) {
 				auto_advance = true;
 			}
-			StringName advance_condition_name = sm->transitions[i].transition->get_advance_condition_name();
-			if (advance_condition_name != StringName() && bool(sm->get_parameter(advance_condition_name))) {
+			StringName advance_condition_name = p_state_machine->transitions[i].transition->get_advance_condition_name();
+			if (advance_condition_name != StringName() && bool(p_state_machine->get_parameter(advance_condition_name))) {
 				auto_advance = true;
 			}
 
-			if (sm->transitions[i].from == current && auto_advance) {
+			if (p_state_machine->transitions[i].from == current && auto_advance) {
 
-				if (sm->transitions[i].transition->get_priority() <= priority_best) {
-					priority_best = sm->transitions[i].transition->get_priority();
+				if (p_state_machine->transitions[i].transition->get_priority() <= priority_best) {
+					priority_best = p_state_machine->transitions[i].transition->get_priority();
 					auto_advance_to = i;
 				}
 			}
 		}
 
 		if (auto_advance_to != -1) {
-			next = sm->transitions[auto_advance_to].to;
-			next_xfade = sm->transitions[auto_advance_to].transition->get_xfade_time();
-			switch_mode = sm->transitions[auto_advance_to].transition->get_switch_mode();
+			next = p_state_machine->transitions[auto_advance_to].to;
+			next_xfade = p_state_machine->transitions[auto_advance_to].transition->get_xfade_time();
+			switch_mode = p_state_machine->transitions[auto_advance_to].transition->get_switch_mode();
 		}
 	}
 
@@ -467,12 +467,12 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 			}
 			current = next;
 			if (switch_mode == AnimationNodeStateMachineTransition::SWITCH_MODE_SYNC) {
-				len_current = sm->blend_node(current, sm->states[current].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
+				len_current = p_state_machine->blend_node(current, p_state_machine->states[current].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
 				pos_current = MIN(pos_current, len_current);
-				sm->blend_node(current, sm->states[current].node, pos_current, true, 0, AnimationNode::FILTER_IGNORE, false);
+				p_state_machine->blend_node(current, p_state_machine->states[current].node, pos_current, true, 0, AnimationNode::FILTER_IGNORE, false);
 
 			} else {
-				len_current = sm->blend_node(current, sm->states[current].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
+				len_current = p_state_machine->blend_node(current, p_state_machine->states[current].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
 				pos_current = 0;
 			}
 
@@ -482,9 +482,9 @@ float AnimationNodeStateMachinePlayback::process(AnimationNodeStateMachine *sm,
 	}
 
 	//compute time left for transitions by using the end node
-	if (sm->end_node != StringName() && sm->end_node != current) {
+	if (p_state_machine->end_node != StringName() && p_state_machine->end_node != current) {
 
-		rem = sm->blend_node(sm->end_node, sm->states[sm->end_node].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
+		rem = p_state_machine->blend_node(p_state_machine->end_node, p_state_machine->states[p_state_machine->end_node].node, 0, true, 0, AnimationNode::FILTER_IGNORE, false);
 	}
 
 	return rem;
diff --git a/scene/animation/root_motion_view.h b/scene/animation/root_motion_view.h
index 07f51165a7..b30b06229e 100644
--- a/scene/animation/root_motion_view.h
+++ b/scene/animation/root_motion_view.h
@@ -56,7 +56,7 @@ public:
 	void set_animation_path(const NodePath &p_path);
 	NodePath get_animation_path() const;
 
-	void set_color(const Color &p_path);
+	void set_color(const Color &p_color);
 	Color get_color() const;
 
 	void set_cell_size(float p_size);
diff --git a/scene/animation/skeleton_ik.cpp b/scene/animation/skeleton_ik.cpp
index 06d6806f03..43c4b2aa51 100644
--- a/scene/animation/skeleton_ik.cpp
+++ b/scene/animation/skeleton_ik.cpp
@@ -423,7 +423,6 @@ void SkeletonIK::_notification(int p_what) {
 }
 
 SkeletonIK::SkeletonIK() :
-		Node(),
 		interpolation(1),
 		override_tip_basis(true),
 		use_magnet(false),
diff --git a/scene/animation/skeleton_ik.h b/scene/animation/skeleton_ik.h
index 5d48b7be33..d2c5f56ace 100644
--- a/scene/animation/skeleton_ik.h
+++ b/scene/animation/skeleton_ik.h
@@ -165,7 +165,7 @@ protected:
 	_validate_property(PropertyInfo &property) const;
 
 	static void _bind_methods();
-	virtual void _notification(int p_notification);
+	virtual void _notification(int p_what);
 
 public:
 	SkeletonIK();
@@ -192,7 +192,7 @@ public:
 	void set_use_magnet(bool p_use);
 	bool is_using_magnet() const;
 
-	void set_magnet_position(const Vector3 &p_constraint);
+	void set_magnet_position(const Vector3 &p_local_position);
 	const Vector3 &get_magnet_position() const;
 
 	void set_min_distance(real_t p_min_distance);
diff --git a/scene/animation/tween.cpp b/scene/animation/tween.cpp
index c70e58564f..4dee4e1d12 100644
--- a/scene/animation/tween.cpp
+++ b/scene/animation/tween.cpp
@@ -583,9 +583,7 @@ bool Tween::_apply_tween_value(InterpolateData &p_data, Variant &value) {
 			}
 
 			// Did we get an error from the function call?
-			if (error.error == Variant::CallError::CALL_OK)
-				return true;
-			return false;
+			return error.error == Variant::CallError::CALL_OK;
 		}
 
 		case INTER_CALLBACK:
diff --git a/scene/audio/audio_stream_player.cpp b/scene/audio/audio_stream_player.cpp
index 2def9fe8fc..c053fceb74 100644
--- a/scene/audio/audio_stream_player.cpp
+++ b/scene/audio/audio_stream_player.cpp
@@ -339,7 +339,7 @@ void AudioStreamPlayer::set_stream_paused(bool p_pause) {
 
 	if (p_pause != stream_paused) {
 		stream_paused = p_pause;
-		stream_paused_fade = p_pause ? true : false;
+		stream_paused_fade = p_pause;
 	}
 }
 
diff --git a/scene/gui/box_container.cpp b/scene/gui/box_container.cpp
index cc37d4cf7d..b7d2131ee9 100644
--- a/scene/gui/box_container.cpp
+++ b/scene/gui/box_container.cpp
@@ -91,7 +91,6 @@ void BoxContainer::_resort() {
 	int stretch_diff = stretch_max - stretch_min;
 	if (stretch_diff < 0) {
 		//avoid negative stretch space
-		stretch_max = stretch_min;
 		stretch_diff = 0;
 	}
 
diff --git a/scene/gui/control.cpp b/scene/gui/control.cpp
index 0845b56828..6e0e26312f 100644
--- a/scene/gui/control.cpp
+++ b/scene/gui/control.cpp
@@ -1042,55 +1042,37 @@ int Control::get_constant(const StringName &p_name, const StringName &p_type) co
 bool Control::has_icon_override(const StringName &p_name) const {
 
 	const Ref<Texture> *tex = data.icon_override.getptr(p_name);
-	if (tex)
-		return true;
-	else
-		return false;
+	return tex != NULL;
 }
 
 bool Control::has_shader_override(const StringName &p_name) const {
 
 	const Ref<Shader> *sdr = data.shader_override.getptr(p_name);
-	if (sdr)
-		return true;
-	else
-		return false;
+	return sdr != NULL;
 }
 
 bool Control::has_stylebox_override(const StringName &p_name) const {
 
 	const Ref<StyleBox> *style = data.style_override.getptr(p_name);
-	if (style)
-		return true;
-	else
-		return false;
+	return style != NULL;
 }
 
 bool Control::has_font_override(const StringName &p_name) const {
 
 	const Ref<Font> *font = data.font_override.getptr(p_name);
-	if (font)
-		return true;
-	else
-		return false;
+	return font != NULL;
 }
 
 bool Control::has_color_override(const StringName &p_name) const {
 
 	const Color *color = data.color_override.getptr(p_name);
-	if (color)
-		return true;
-	else
-		return false;
+	return color != NULL;
 }
 
 bool Control::has_constant_override(const StringName &p_name) const {
 
 	const int *constant = data.constant_override.getptr(p_name);
-	if (constant)
-		return true;
-	else
-		return false;
+	return constant != NULL;
 }
 
 bool Control::has_icon(const StringName &p_name, const StringName &p_type) const {
@@ -1997,10 +1979,7 @@ Control *Control::find_next_valid_focus() const {
 			break;
 		}
 
-		if (next_child) {
-
-			from = next_child;
-		} else {
+		if (!next_child) {
 
 			next_child = _next_control(from);
 			if (!next_child) { //nothing else.. go up and find either window or subwindow
diff --git a/scene/gui/control.h b/scene/gui/control.h
index a6f9a442ae..2489a5eda4 100644
--- a/scene/gui/control.h
+++ b/scene/gui/control.h
@@ -139,8 +139,8 @@ private:
 		bool operator()(const Control *p_a, const Control *p_b) const {
 			if (p_a->get_canvas_layer() == p_b->get_canvas_layer())
 				return p_b->is_greater_than(p_a);
-			else
-				return p_a->get_canvas_layer() < p_b->get_canvas_layer();
+
+			return p_a->get_canvas_layer() < p_b->get_canvas_layer();
 		}
 	};
 
diff --git a/scene/gui/file_dialog.cpp b/scene/gui/file_dialog.cpp
index bc8dcf0e82..ba4d390fc5 100644
--- a/scene/gui/file_dialog.cpp
+++ b/scene/gui/file_dialog.cpp
@@ -302,11 +302,8 @@ bool FileDialog::_is_open_should_be_disabled() {
 	Dictionary d = ti->get_metadata(0);
 
 	// Opening a file, but selected a folder? Forbidden.
-	if (((mode == MODE_OPEN_FILE || mode == MODE_OPEN_FILES) && d["dir"]) || // Flipped case, also forbidden.
-			(mode == MODE_OPEN_DIR && !d["dir"]))
-		return true;
-
-	return false;
+	return ((mode == MODE_OPEN_FILE || mode == MODE_OPEN_FILES) && d["dir"]) || // Flipped case, also forbidden.
+		   (mode == MODE_OPEN_DIR && !d["dir"]);
 }
 
 void FileDialog::_go_up() {
diff --git a/scene/gui/label.cpp b/scene/gui/label.cpp
index e3e9368a12..e18387a52e 100644
--- a/scene/gui/label.cpp
+++ b/scene/gui/label.cpp
@@ -470,7 +470,6 @@ void Label::regenerate_word_cache() {
 					wc->word_len = i - word_pos;
 					wc->space_count = space_count;
 					current_word_size = char_width;
-					space_count = 0;
 					word_pos = i;
 				}
 			}
diff --git a/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
index da6bff8ab8..cd3c8c0097 100644
--- a/scene/gui/line_edit.cpp
+++ b/scene/gui/line_edit.cpp
@@ -623,10 +623,7 @@ bool LineEdit::_is_over_clear_button(const Point2 &p_pos) const {
 	}
 	Ref<Texture> icon = Control::get_icon("clear");
 	int x_ofs = get_stylebox("normal")->get_offset().x;
-	if (p_pos.x > get_size().width - icon->get_width() - x_ofs) {
-		return true;
-	}
-	return false;
+	return p_pos.x > get_size().width - icon->get_width() - x_ofs;
 }
 
 void LineEdit::_notification(int p_what) {
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index 8891f679ee..134bcc91a8 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -447,14 +447,13 @@ int RichTextLabel::_process_line(ItemFrame *p_frame, const Vector2 &p_ofs, int &
 									if (p_font_color_shadow.a > 0) {
 										float x_ofs_shadow = align_ofs + pofs;
 										float y_ofs_shadow = y + lh - line_descent;
-										float move = font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + shadow_ofs, c[i], c[i + 1], p_font_color_shadow);
+										font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + shadow_ofs, c[i], c[i + 1], p_font_color_shadow);
 
 										if (p_shadow_as_outline) {
 											font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(-shadow_ofs.x, shadow_ofs.y), c[i], c[i + 1], p_font_color_shadow);
 											font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(shadow_ofs.x, -shadow_ofs.y), c[i], c[i + 1], p_font_color_shadow);
 											font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(-shadow_ofs.x, -shadow_ofs.y), c[i], c[i + 1], p_font_color_shadow);
 										}
-										x_ofs_shadow += move;
 									}
 
 									if (selected) {
@@ -935,84 +934,80 @@ void RichTextLabel::_gui_input(Ref<InputEvent> p_event) {
 			return;
 
 		if (b->get_button_index() == BUTTON_LEFT) {
+			if (b->is_pressed() && !b->is_doubleclick()) {
+				scroll_updated = false;
+				int line = 0;
+				Item *item = NULL;
 
-			if (true) {
+				bool outside;
+				_find_click(main, b->get_position(), &item, &line, &outside);
 
-				if (b->is_pressed() && !b->is_doubleclick()) {
-					scroll_updated = false;
-					int line = 0;
-					Item *item = NULL;
-
-					bool outside;
-					_find_click(main, b->get_position(), &item, &line, &outside);
-
-					if (item) {
+				if (item) {
 
-						if (selection.enabled) {
+					if (selection.enabled) {
 
-							selection.click = item;
-							selection.click_char = line;
+						selection.click = item;
+						selection.click_char = line;
 
-							// Erase previous selection.
-							if (selection.active) {
-								selection.from = NULL;
-								selection.from_char = '\0';
-								selection.to = NULL;
-								selection.to_char = '\0';
-								selection.active = false;
+						// Erase previous selection.
+						if (selection.active) {
+							selection.from = NULL;
+							selection.from_char = '\0';
+							selection.to = NULL;
+							selection.to_char = '\0';
+							selection.active = false;
 
-								update();
-							}
+							update();
 						}
 					}
-				} else if (b->is_pressed() && b->is_doubleclick() && selection.enabled) {
+				}
+			} else if (b->is_pressed() && b->is_doubleclick() && selection.enabled) {
 
-					//doubleclick: select word
-					int line = 0;
-					Item *item = NULL;
-					bool outside;
+				//doubleclick: select word
+				int line = 0;
+				Item *item = NULL;
+				bool outside;
 
-					_find_click(main, b->get_position(), &item, &line, &outside);
+				_find_click(main, b->get_position(), &item, &line, &outside);
 
-					while (item && item->type != ITEM_TEXT) {
+				while (item && item->type != ITEM_TEXT) {
 
-						item = _get_next_item(item, true);
-					}
+					item = _get_next_item(item, true);
+				}
 
-					if (item && item->type == ITEM_TEXT) {
+				if (item && item->type == ITEM_TEXT) {
 
-						String itext = static_cast<ItemText *>(item)->text;
+					String itext = static_cast<ItemText *>(item)->text;
 
-						int beg, end;
-						if (select_word(itext, line, beg, end)) {
+					int beg, end;
+					if (select_word(itext, line, beg, end)) {
 
-							selection.from = item;
-							selection.to = item;
-							selection.from_char = beg;
-							selection.to_char = end - 1;
-							selection.active = true;
-							update();
-						}
+						selection.from = item;
+						selection.to = item;
+						selection.from_char = beg;
+						selection.to_char = end - 1;
+						selection.active = true;
+						update();
 					}
-				} else if (!b->is_pressed()) {
+				}
+			} else if (!b->is_pressed()) {
 
-					selection.click = NULL;
+				selection.click = NULL;
 
-					if (!b->is_doubleclick() && !scroll_updated) {
-						int line = 0;
-						Item *item = NULL;
+				if (!b->is_doubleclick() && !scroll_updated) {
+					int line = 0;
+					Item *item = NULL;
 
-						bool outside;
-						_find_click(main, b->get_position(), &item, &line, &outside);
+					bool outside;
+					_find_click(main, b->get_position(), &item, &line, &outside);
 
-						if (item) {
+					if (item) {
 
-							Variant meta;
-							if (!outside && _find_meta(item, &meta)) {
-								//meta clicked
+						Variant meta;
+						if (!outside && _find_meta(item, &meta)) {
+							//meta clicked
 
-								emit_signal("meta_clicked", meta);
-							}
+							emit_signal("meta_clicked", meta);
 						}
 					}
 				}
diff --git a/scene/gui/scroll_container.cpp b/scene/gui/scroll_container.cpp
index a1034937b5..d83ae47671 100644
--- a/scene/gui/scroll_container.cpp
+++ b/scene/gui/scroll_container.cpp
@@ -140,19 +140,17 @@ void ScrollContainer::_gui_input(const Ref<InputEvent> &p_gui_input) {
 				_cancel_drag();
 			}
 
-			if (true) {
-				drag_speed = Vector2();
-				drag_accum = Vector2();
-				last_drag_accum = Vector2();
-				drag_from = Vector2(h_scroll->get_value(), v_scroll->get_value());
-				drag_touching = OS::get_singleton()->has_touchscreen_ui_hint();
-				drag_touching_deaccel = false;
-				beyond_deadzone = false;
+			drag_speed = Vector2();
+			drag_accum = Vector2();
+			last_drag_accum = Vector2();
+			drag_from = Vector2(h_scroll->get_value(), v_scroll->get_value());
+			drag_touching = OS::get_singleton()->has_touchscreen_ui_hint();
+			drag_touching_deaccel = false;
+			beyond_deadzone = false;
+			time_since_motion = 0;
+			if (drag_touching) {
+				set_physics_process_internal(true);
 				time_since_motion = 0;
-				if (drag_touching) {
-					set_physics_process_internal(true);
-					time_since_motion = 0;
-				}
 			}
 
 		} else {
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 36d7dad1d3..62b6a917fc 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -1603,7 +1603,6 @@ void TextEdit::_consume_pair_symbol(CharType ch) {
 
 	insert_text_at_cursor(ch_pair);
 	cursor_set_column(cursor_position_to_move);
-	return;
 }
 
 void TextEdit::_consume_backspace_for_pair_symbol(int prev_line, int prev_column) {
@@ -5404,11 +5403,7 @@ bool TextEdit::is_line_comment(int p_line) const {
 	for (int i = 0; i < line_length - 1; i++) {
 		if (_is_symbol(text[p_line][i]) && cri_map.has(i)) {
 			const Text::ColorRegionInfo &cri = cri_map[i];
-			if (color_regions[cri.region].begin_key == "#" || color_regions[cri.region].begin_key == "//") {
-				return true;
-			} else {
-				return false;
-			}
+			return color_regions[cri.region].begin_key == "#" || color_regions[cri.region].begin_key == "//";
 		} else if (_is_whitespace(text[p_line][i])) {
 			continue;
 		} else {
@@ -5457,9 +5452,7 @@ bool TextEdit::is_folded(int p_line) const {
 	ERR_FAIL_INDEX_V(p_line, text.size(), false);
 	if (p_line + 1 >= text.size())
 		return false;
-	if (!is_line_hidden(p_line) && is_line_hidden(p_line + 1))
-		return true;
-	return false;
+	return !is_line_hidden(p_line) && is_line_hidden(p_line + 1);
 }
 
 Vector<int> TextEdit::get_folded_lines() const {
diff --git a/scene/gui/tree.cpp b/scene/gui/tree.cpp
index 54370d02ba..924c480b15 100644
--- a/scene/gui/tree.cpp
+++ b/scene/gui/tree.cpp
@@ -1929,8 +1929,6 @@ int Tree::propagate_mouse_event(const Point2i &p_pos, int x_ofs, int y_ofs, bool
 				edited_col = col;
 				bool on_arrow = x > col_width - cache.select_arrow->get_width();
 
-				bring_up_editor = false;
-
 				custom_popup_rect = Rect2i(get_global_position() + Point2i(col_ofs, _get_title_button_height() + y_ofs + item_h - cache.offset.y), Size2(get_column_width(col), item_h));
 
 				if (on_arrow || !p_item->cells[col].custom_button) {
diff --git a/scene/main/node.cpp b/scene/main/node.cpp
index ee23b24b3c..715151b4f5 100644
--- a/scene/main/node.cpp
+++ b/scene/main/node.cpp
@@ -1393,7 +1393,7 @@ Node *Node::get_node(const NodePath &p_path) const {
 	Node *node = get_node_or_null(p_path);
 	if (!node) {
 		ERR_EXPLAIN("Node not found: " + p_path);
-		ERR_FAIL_COND_V(!node, NULL);
+		ERR_FAIL_V(NULL);
 	}
 	return node;
 }
diff --git a/scene/main/viewport.cpp b/scene/main/viewport.cpp
index 10e5ad78e2..dcd70a1844 100644
--- a/scene/main/viewport.cpp
+++ b/scene/main/viewport.cpp
@@ -532,7 +532,7 @@ void Viewport::_notification(int p_what) {
 											Map<ObjectID, uint64_t>::Element *F = physics_2d_mouseover.find(res[i].collider_id);
 
 											if (!F) {
-												F = physics_2d_mouseover.insert(res[i].collider_id, frame);
+												physics_2d_mouseover.insert(res[i].collider_id, frame);
 												co->_mouse_enter();
 											} else {
 												F->get() = frame;
diff --git a/scene/resources/multimesh.cpp b/scene/resources/multimesh.cpp
index 5d8adc0c8d..99a17fb5b9 100644
--- a/scene/resources/multimesh.cpp
+++ b/scene/resources/multimesh.cpp
@@ -35,7 +35,7 @@ void MultiMesh::_set_transform_array(const PoolVector<Vector3> &p_array) {
 	if (transform_format != TRANSFORM_3D)
 		return;
 
-	PoolVector<Vector3> xforms = p_array;
+	const PoolVector<Vector3> &xforms = p_array;
 	int len = xforms.size();
 	ERR_FAIL_COND((len / 4) != instance_count);
 	if (len == 0)
@@ -85,7 +85,7 @@ void MultiMesh::_set_transform_2d_array(const PoolVector<Vector2> &p_array) {
 	if (transform_format != TRANSFORM_2D)
 		return;
 
-	PoolVector<Vector2> xforms = p_array;
+	const PoolVector<Vector2> &xforms = p_array;
 	int len = xforms.size();
 	ERR_FAIL_COND((len / 3) != instance_count);
 	if (len == 0)
@@ -130,7 +130,7 @@ PoolVector<Vector2> MultiMesh::_get_transform_2d_array() const {
 
 void MultiMesh::_set_color_array(const PoolVector<Color> &p_array) {
 
-	PoolVector<Color> colors = p_array;
+	const PoolVector<Color> &colors = p_array;
 	int len = colors.size();
 	if (len == 0)
 		return;
@@ -162,7 +162,7 @@ PoolVector<Color> MultiMesh::_get_color_array() const {
 
 void MultiMesh::_set_custom_data_array(const PoolVector<Color> &p_array) {
 
-	PoolVector<Color> custom_datas = p_array;
+	const PoolVector<Color> &custom_datas = p_array;
 	int len = custom_datas.size();
 	if (len == 0)
 		return;
diff --git a/scene/resources/primitive_meshes.cpp b/scene/resources/primitive_meshes.cpp
index 04d13c8869..74a493d3b5 100644
--- a/scene/resources/primitive_meshes.cpp
+++ b/scene/resources/primitive_meshes.cpp
@@ -743,8 +743,6 @@ void CylinderMesh::_create_mesh_array(Array &p_arr) const {
 	int i, j, prevrow, thisrow, point;
 	float x, y, z, u, v, radius;
 
-	radius = bottom_radius > top_radius ? bottom_radius : top_radius;
-
 	PoolVector<Vector3> points;
 	PoolVector<Vector3> normals;
 	PoolVector<float> tangents;
diff --git a/scene/resources/resource_format_text.cpp b/scene/resources/resource_format_text.cpp
index efc1082a6b..339f008a3d 100644
--- a/scene/resources/resource_format_text.cpp
+++ b/scene/resources/resource_format_text.cpp
@@ -1324,7 +1324,7 @@ Error ResourceFormatLoaderText::convert_file_to_binary(const String &p_src_path,
 	ERR_FAIL_COND_V(err != OK, ERR_CANT_OPEN);
 
 	Ref<ResourceInteractiveLoaderText> ria = memnew(ResourceInteractiveLoaderText);
-	String path = p_src_path;
+	const String &path = p_src_path;
 	ria->local_path = ProjectSettings::get_singleton()->localize_path(path);
 	ria->res_path = ria->local_path;
 	//ria->set_local_path( ProjectSettings::get_singleton()->localize_path(p_path) );
@@ -1441,7 +1441,7 @@ void ResourceFormatSaverTextInstance::_find_resources(const Variant &p_variant,
 			int len = varray.size();
 			for (int i = 0; i < len; i++) {
 
-				Variant v = varray.get(i);
+				const Variant &v = varray.get(i);
 				_find_resources(v);
 			}
 
diff --git a/scene/resources/visual_shader_nodes.h b/scene/resources/visual_shader_nodes.h
index df753276e4..ef64b50711 100644
--- a/scene/resources/visual_shader_nodes.h
+++ b/scene/resources/visual_shader_nodes.h
@@ -699,7 +699,7 @@ public:
 
 	virtual String generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview = false) const; //if no output is connected, the output var passed will be empty. if no input is connected and input is NIL, the input var passed will be empty
 
-	void set_function(Function p_op);
+	void set_function(Function p_func);
 	Function get_function() const;
 
 	virtual Vector<StringName> get_editable_properties() const;
@@ -740,7 +740,7 @@ public:
 
 	virtual String generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview = false) const; //if no output is connected, the output var passed will be empty. if no input is connected and input is NIL, the input var passed will be empty
 
-	void set_function(Function p_op);
+	void set_function(Function p_func);
 	Function get_function() const;
 
 	virtual Vector<StringName> get_editable_properties() const;
@@ -895,7 +895,7 @@ public:
 
 	virtual String generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview = false) const; //if no output is connected, the output var passed will be empty. if no input is connected and input is NIL, the input var passed will be empty
 
-	void set_function(Function p_op);
+	void set_function(Function p_func);
 	Function get_function() const;
 
 	virtual Vector<StringName> get_editable_properties() const;
@@ -935,7 +935,7 @@ public:
 
 	virtual String generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview = false) const; //if no output is connected, the output var passed will be empty. if no input is connected and input is NIL, the input var passed will be empty
 
-	void set_function(Function p_op);
+	void set_function(Function p_func);
 	Function get_function() const;
 
 	virtual Vector<StringName> get_editable_properties() const;