feat: add animation for terra_blade

scenes/bullets/terra_blade/terra_blade_beam.gd

@@ -10,6 +10,19 @@ func straight_move(
 	position = from
 	tween.tween_property(self, "position", to, time).set_ease(ease_).set_trans(trans)
 
+func falling_move(
+	from: Vector2, velocity: Vector2, g: float
+):
+	var vx = velocity.x
+	var vy = velocity.y
+	rotation = Vector2(vx, vy).angle()
+	var f = func(t):
+		var x = vx * t
+		var y = vy * t + g * t * t / 2.0
+		position = from + Vector2(x, y)
+		rotation -= Vector2.DOWN.angle_to(Vector2(cos(rotation), sin(rotation))) / 70
+	tween.tween_method(f, 0.0, 10.0, 10)
+
 
 func _on_out_screen_screen_exited():
 	queue_free()

scenes/weapons/enchanted_sword/enchanted_sword.tscn

@@ -8,7 +8,6 @@
 modulate = Color(1.5, 1.5, 1.5, 1)
 z_index = 1
 position = Vector2(574, 291)
-rotation = -5.57284
 scale = Vector2(3, 3)
 texture = ExtResource("1_cwcxs")
 offset = Vector2(8.27271, -8.17079)

scenes/weapons/terra_blade/terra_blade.gd

@@ -6,9 +6,20 @@ var tween = create_tween()
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	begin()
+
+	tween.tween_callback(func():
+		await get_tree().create_timer(0.2).timeout
+		line_call.call(Vector2(200, 200), Vector2(700,450), 10, shot_falling_beam)
+	)
+	tween.tween_property($Sprite2D, "position", Vector2(700, 450), 0.5).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_CUBIC)
+	tween.tween_interval(10)
+
+func line_call(from, to, num, f):
+	for i in range(0, num + 1):
+		f.call(from + (to - from) * i / num)
 
 func begin():
-	$Sprite2D.position = Vector2(-500, 1000)
+	$Sprite2D.position = Vector2(200, 1000)
 	var center = Vector2(570, 200)
 
 	# 绘制特效
@@ -25,9 +36,23 @@ func begin():
 			get_parent().add_child.call_deferred(beam)
 			var rad = r + unit_rad * i
 			var to = 2000 * Vector2(cos(rad), sin(rad))
-			beam.straight_move(center, center + to, 1.5, Tween.EASE_IN, Tween.TRANS_CIRC)
+			beam.straight_move(center, center + to, 1.2, Tween.EASE_IN, Tween.TRANS_CIRC)
 
-	tween.tween_callback(radial_shot.bind(24, 0))
-	tween.tween_interval(0.2)
-	tween.tween_callback(radial_shot.bind(24, TAU / 48))
+	tween.tween_callback(func():
+		var t = create_tween()
+		t.tween_callback(radial_shot.bind(24, 0))
+		t.tween_interval(0.2)
+		t.tween_callback(radial_shot.bind(24, TAU / 48))
+		)
+	tween.tween_property($Sprite2D, "position", Vector2(200, 200), 1).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_CUBIC)
+	tween.parallel().tween_property($Sprite2D, "rotation", TAU + (Vector2(700, 450) - Vector2(200, 200)).angle(), 1).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_CUBIC).as_relative()
 
+var seed = PI
+func shot_falling_beam(center):
+	var beam = terra_blade_beam.instantiate()
+	get_parent().add_child.call_deferred(beam)
+	var to = 300 * Vector2(cos(seed), sin(seed))
+	beam.falling_move(center, to, 800)
+	seed = sqrt(seed * seed * seed * 114) / 2
+	while seed > 114:
+		seed /= TAU

scenes/weapons/terra_blade/terra_blade.tscn

@@ -11,15 +11,18 @@ script = ExtResource("1_1hrqx")
 terra_blade_beam = ExtResource("2_yp2sf")
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
+modulate = Color(1.5, 1.5, 1.5, 1)
 position = Vector2(527.511, 314.206)
 rotation = 0.748746
-scale = Vector2(2.3, 2.3)
+scale = Vector2(2.5, 2.5)
 texture = ExtResource("1_477b2")
 offset = Vector2(12.0369, -15.4621)
 metadata/_edit_group_ = true
 
 [node name="CirclePainter" type="Node2D" parent="."]
+modulate = Color(1.5, 1.5, 1.5, 1)
 script = ExtResource("4_nmed2")
 
 [node name="RoundPainter" type="Node2D" parent="."]
+modulate = Color(1.5, 1.5, 1.5, 1)
 script = ExtResource("5_abxlu")