feat: add special effects to terra_blade beginning animation

scenes/bullets/terra_blade/terra_blade_beam.gd

@@ -4,11 +4,11 @@ var tween = create_tween()
 
 
 func straight_move(
-	from: Vector2, to: Vector2, time: float, ease: Tween.EaseType, trans: Tween.TransitionType
+	from: Vector2, to: Vector2, time: float, ease_: Tween.EaseType, trans: Tween.TransitionType
 ):
 	rotation = (to - from).angle()
 	position = from
-	tween.tween_property(self, "position", to, time).set_ease(ease).set_trans(trans)
+	tween.tween_property(self, "position", to, time).set_ease(ease_).set_trans(trans)
 
 
 func _on_out_screen_screen_exited():

scenes/weapons/terra_blade/circle_painter.gd

@@ -0,0 +1,23 @@
+extends Node2D
+
+var rad: float
+var center: Vector2
+var r: float
+
+
+func _draw():
+	draw_arc(center, r, -TAU / 4, -TAU / 4 + rad, 50, Color(0, 1, 0), 30, true)
+
+
+func draw(rad_: float, center_: Vector2, r_: float):
+	rad = rad_
+	center = center_
+	r = r_
+	queue_redraw()
+
+
+func draw2(r_: float, rad_: float, center_: Vector2):
+	rad = rad_
+	center = center_
+	r = r_
+	queue_redraw()

scenes/weapons/terra_blade/round_painter.gd

@@ -0,0 +1,16 @@
+extends Node2D
+
+var r: float
+var alpha: float
+var center: Vector2
+
+
+func _draw():
+	draw_circle(center, r, Color(0, 1, 0, alpha), true, -1, true)
+
+
+func draw(r_, center_):
+	r = r_
+	alpha = (270.0 - r_) / 270.0
+	center = center_
+	queue_redraw()

scenes/weapons/terra_blade/ter87C6.tmp

@@ -0,0 +1,25 @@
+[gd_scene load_steps=6 format=3 uid="uid://clwl2jjjehebp"]
+
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/terra_blade.gd" id="1_1hrqx"]
+[ext_resource type="Texture2D" uid="uid://cykbxj82pu7no" path="res://scenes/weapons/terra_blade/terra_blade.png" id="1_477b2"]
+[ext_resource type="PackedScene" uid="uid://1megnlcsse45" path="res://scenes/bullets/terra_blade/TerraBladeBeam.tscn" id="2_yp2sf"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/circle_painter.gd" id="4_nmed2"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/round_painter.gd" id="5_abxlu"]
+
+[node name="TerraBlade" type="Node"]
+script = ExtResource("1_1hrqx")
+terra_blade_beam = ExtResource("2_yp2sf")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+position = Vector2(527.511, 314.206)
+rotation = 0.748746
+scale = Vector2(2.3, 2.3)
+texture = ExtResource("1_477b2")
+offset = Vector2(12.0369, -15.4621)
+metadata/_edit_group_ = true
+
+[node name="CirclePainter" type="Node2D" parent="."]
+script = ExtResource("4_nmed2")
+
+[node name="RoundPainter" type="Node2D" parent="."]
+script = ExtResource("5_abxlu")

scenes/weapons/terra_blade/terBA15.tmp

@@ -0,0 +1,25 @@
+[gd_scene load_steps=6 format=3 uid="uid://clwl2jjjehebp"]
+
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/terra_blade.gd" id="1_1hrqx"]
+[ext_resource type="Texture2D" uid="uid://cykbxj82pu7no" path="res://scenes/weapons/terra_blade/terra_blade.png" id="1_477b2"]
+[ext_resource type="PackedScene" uid="uid://1megnlcsse45" path="res://scenes/bullets/terra_blade/TerraBladeBeam.tscn" id="2_yp2sf"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/circle_painter.gd" id="4_nmed2"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/round_painter.gd" id="5_abxlu"]
+
+[node name="TerraBlade" type="Node"]
+script = ExtResource("1_1hrqx")
+terra_blade_beam = ExtResource("2_yp2sf")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+position = Vector2(527.511, 314.206)
+rotation = 0.748746
+scale = Vector2(2.3, 2.3)
+texture = ExtResource("1_477b2")
+offset = Vector2(12.0369, -15.4621)
+metadata/_edit_group_ = true
+
+[node name="CirclePainter" type="Node2D" parent="."]
+script = ExtResource("4_nmed2")
+
+[node name="RoundPainter" type="Node2D" parent="."]
+script = ExtResource("5_abxlu")

scenes/weapons/terra_blade/terra_blade.gd

@@ -9,14 +9,22 @@ func _ready():
 
 func begin():
 	$Sprite2D.position = Vector2(-500, 1000)
-	var center = Vector2(570, 150)
+	var center = Vector2(570, 200)
+
+	# 绘制特效
+	tween.tween_interval(0.5)
+	tween.tween_method($CirclePainter.draw.bind(center, 170), 0.0, TAU, 0.6)
+	tween.tween_method($CirclePainter.draw2.bind(TAU, center), 170.0, 0, 0.8).set_ease(Tween.EASE_IN).set_trans(Tween.TRANS_CUBIC)
+	tween.tween_callback(func(): create_tween().tween_method($RoundPainter.draw.bind(center), 0.0, 270.0, 1.2).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_CUBIC))
+
+
 	var radial_shot = func(num: int, r: float):
 		var unit_rad	 = TAU / num
 		for i in range(0, num):
 			var beam = terra_blade_beam.instantiate()
 			get_parent().add_child.call_deferred(beam)
 			var rad = r + unit_rad * i
-			var to = 1500 * Vector2(cos(rad), sin(rad))
+			var to = 2000 * Vector2(cos(rad), sin(rad))
 			beam.straight_move(center, center + to, 1.5, Tween.EASE_IN, Tween.TRANS_CIRC)
 
 	tween.tween_callback(radial_shot.bind(24, 0))

scenes/weapons/terra_blade/terra_blade.tscn

@@ -1,8 +1,10 @@
-[gd_scene load_steps=4 format=3 uid="uid://clwl2jjjehebp"]
+[gd_scene load_steps=6 format=3 uid="uid://clwl2jjjehebp"]
 
 [ext_resource type="Script" path="res://scenes/weapons/terra_blade/terra_blade.gd" id="1_1hrqx"]
 [ext_resource type="Texture2D" uid="uid://cykbxj82pu7no" path="res://scenes/weapons/terra_blade/terra_blade.png" id="1_477b2"]
 [ext_resource type="PackedScene" uid="uid://1megnlcsse45" path="res://scenes/bullets/terra_blade/TerraBladeBeam.tscn" id="2_yp2sf"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/circle_painter.gd" id="4_nmed2"]
+[ext_resource type="Script" path="res://scenes/weapons/terra_blade/round_painter.gd" id="5_abxlu"]
 
 [node name="TerraBlade" type="Node"]
 script = ExtResource("1_1hrqx")
@@ -15,3 +17,9 @@ scale = Vector2(2.3, 2.3)
 texture = ExtResource("1_477b2")
 offset = Vector2(12.0369, -15.4621)
 metadata/_edit_group_ = true
+
+[node name="CirclePainter" type="Node2D" parent="."]
+script = ExtResource("4_nmed2")
+
+[node name="RoundPainter" type="Node2D" parent="."]
+script = ExtResource("5_abxlu")