the boss!

graphics/bullets/normal_bullet/test_bullet_strip.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" script_class="AnimationStrip" load_steps=3 format=3 uid="uid://d4nwqsr1tyguc"]
+
+[ext_resource type="Script" uid="uid://0ognvvq2ncd7" path="res://systems/visuals/animation_strip.gd" id="1_s564h"]
+[ext_resource type="Texture2D" uid="uid://c21fe72aym3fe" path="res://graphics/bullets/normal_bullet/test_bullet.png" id="2_w8fao"]
+
+[resource]
+script = ExtResource("1_s564h")
+texture = ExtResource("2_w8fao")
+frames = 2
+fps = 10.0
+metadata/_custom_type_script = "uid://0ognvvq2ncd7"

graphics/bullets/normal_bullet/test_bullet_strip_overlay.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" script_class="AnimationStrip" load_steps=3 format=3 uid="uid://comjbd70kctg8"]
+
+[ext_resource type="Script" uid="uid://0ognvvq2ncd7" path="res://systems/visuals/animation_strip.gd" id="1_8q4ym"]
+[ext_resource type="Texture2D" uid="uid://cgqgb84k38tbe" path="res://graphics/bullets/normal_bullet/test_bullet_overlay.png" id="2_mrles"]
+
+[resource]
+script = ExtResource("1_8q4ym")
+texture = ExtResource("2_mrles")
+frames = 2
+fps = 10.0
+metadata/_custom_type_script = "uid://0ognvvq2ncd7"

objects/bosses/tesu/tesu.tscn

@@ -0,0 +1,273 @@
+[gd_scene load_steps=34 format=3 uid="uid://bsgqhb8qak75u"]
+
+[ext_resource type="Script" uid="uid://b6ae108uhk7hk" path="res://systems/boss/boss.gd" id="1_8sblh"]
+[ext_resource type="Script" uid="uid://nyslrh651s8u" path="res://systems/boss/boss_phase.gd" id="2_vnn1v"]
+[ext_resource type="AudioStream" uid="uid://dwffpsx7xlfla" path="res://audio/sounds/boss_hit.ogg" id="3_vnhju"]
+[ext_resource type="Texture2D" uid="uid://y0c5cddwa216" path="res://graphics/boss_sprites/tesu.png" id="3_vnn1v"]
+[ext_resource type="Script" uid="uid://df8w64703kw0c" path="res://systems/bullets/danmaku_emitter.gd" id="4_duqw0"]
+[ext_resource type="Script" uid="uid://vus1a0flwtnm" path="res://systems/bullets/bullet_preset.gd" id="5_aka0y"]
+[ext_resource type="Resource" uid="uid://d4nwqsr1tyguc" path="res://graphics/bullets/normal_bullet/test_bullet_strip.tres" id="6_3hyls"]
+[ext_resource type="Script" uid="uid://0ognvvq2ncd7" path="res://systems/visuals/animation_strip.gd" id="6_aka0y"]
+[ext_resource type="Script" uid="uid://dntp60my5f65m" path="res://systems/bullets/bullet_behaviors/linear_motion_behavior.gd" id="7_vnhju"]
+[ext_resource type="Resource" uid="uid://comjbd70kctg8" path="res://graphics/bullets/normal_bullet/test_bullet_strip_overlay.tres" id="8_vnhju"]
+[ext_resource type="Script" uid="uid://dtuc6qerbfset" path="res://systems/bullets/spawn_patterns/ring_pattern.gd" id="9_3hyls"]
+[ext_resource type="Script" uid="uid://ckedfcjjnv7dq" path="res://systems/bullets/spawn_patterns/randomized_spawn_pattern.gd" id="10_7bpd6"]
+[ext_resource type="Script" uid="uid://t5lnmlng1vey" path="res://systems/bullets/spawn_patterns/spread_pattern.gd" id="13_7bpd6"]
+[ext_resource type="Script" uid="uid://drxrjgbmeglwp" path="res://systems/bullets/spawn_patterns/stacked_spawn_pattern.gd" id="14_jr3ht"]
+[ext_resource type="Script" uid="uid://b00hsbakgtsi0" path="res://systems/bullets/spawn_patterns/targetted_spawn_pattern.gd" id="15_hqscp"]
+
+[sub_resource type="Animation" id="Animation_3hyls"]
+resource_name = "midway_left"
+length = 7.0
+loop_mode = 1
+step = 0.25
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:position")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 1, 2.5, 3, 4, 5, 6.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1),
+"update": 0,
+"values": [Vector2(120, 80), Vector2(40, 80), Vector2(40, 80), Vector2(120, 80), Vector2(120, 80), Vector2(200, 80), Vector2(200, 80)]
+}
+
+[sub_resource type="Animation" id="Animation_vnhju"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:position")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector2(120, 80)]
+}
+
+[sub_resource type="Animation" id="Animation_16jkj"]
+resource_name = "pinch"
+length = 8.0
+loop_mode = 1
+step = 0.25
+capture_included = true
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:position")
+tracks/0/interp = 2
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 4),
+"transitions": PackedFloat32Array(1, 1),
+"update": 2,
+"values": [Vector2(40, 80), Vector2(200, 80)]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_16jkj"]
+_data = {
+&"RESET": SubResource("Animation_vnhju"),
+&"midway_left": SubResource("Animation_3hyls"),
+&"pinch": SubResource("Animation_16jkj")
+}
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_vnn1v"]
+size = Vector2(36, 36)
+
+[sub_resource type="Resource" id="Resource_hqscp"]
+script = ExtResource("7_vnhju")
+metadata/_custom_type_script = "uid://dntp60my5f65m"
+
+[sub_resource type="Resource" id="Resource_vnhju"]
+script = ExtResource("9_3hyls")
+bullet_count = 1
+bullet_speed = 120.0
+metadata/_custom_type_script = "uid://dtuc6qerbfset"
+
+[sub_resource type="Resource" id="Resource_lp5hl"]
+script = ExtResource("10_7bpd6")
+pattern = SubResource("Resource_vnhju")
+property_min_values = Dictionary[StringName, float]({
+&"angle_offset": 0.0
+})
+property_max_values = Dictionary[StringName, float]({
+&"angle_offset": 6.283
+})
+iterations = 50
+metadata/_custom_type_script = "uid://ckedfcjjnv7dq"
+
+[sub_resource type="Resource" id="Resource_4tcmc"]
+script = ExtResource("5_aka0y")
+behavior = SubResource("Resource_hqscp")
+hitbox_size = Vector2i(6, 6)
+base_graphics = Array[ExtResource("6_aka0y")]([ExtResource("6_3hyls")])
+overlay_graphics = Array[ExtResource("6_aka0y")]([ExtResource("8_vnhju")])
+colors = Array[Color]([Color(1, 0, 0, 1), Color(0, 1, 0, 1), Color(0, 0, 1, 1), Color(1, 1, 0, 1)])
+pattern = SubResource("Resource_lp5hl")
+metadata/_custom_type_script = "uid://vus1a0flwtnm"
+
+[sub_resource type="Resource" id="Resource_16jkj"]
+script = ExtResource("7_vnhju")
+acceleration = 80.0
+metadata/_custom_type_script = "uid://dntp60my5f65m"
+
+[sub_resource type="Resource" id="Resource_3hyls"]
+script = ExtResource("9_3hyls")
+radius = 16.0
+direction_rotation = 3.6651914291880923
+metadata/_custom_type_script = "uid://dtuc6qerbfset"
+
+[sub_resource type="Resource" id="Resource_7bpd6"]
+script = ExtResource("10_7bpd6")
+pattern = SubResource("Resource_3hyls")
+property_min_values = Dictionary[StringName, float]({
+&"angle_offset": 0.0
+})
+property_max_values = Dictionary[StringName, float]({
+&"angle_offset": 6.283
+})
+iterations = 10
+metadata/_custom_type_script = "uid://ckedfcjjnv7dq"
+
+[sub_resource type="Resource" id="Resource_5v8uu"]
+script = ExtResource("5_aka0y")
+behavior = SubResource("Resource_16jkj")
+hitbox_size = Vector2i(6, 6)
+base_graphics = Array[ExtResource("6_aka0y")]([ExtResource("6_3hyls")])
+overlay_graphics = Array[ExtResource("6_aka0y")]([ExtResource("8_vnhju")])
+colors = Array[Color]([Color(1, 0, 1, 1), Color(0, 1, 1, 1), Color(1, 1, 1, 1)])
+pattern = SubResource("Resource_7bpd6")
+metadata/_custom_type_script = "uid://vus1a0flwtnm"
+
+[sub_resource type="Resource" id="Resource_jr3ht"]
+script = ExtResource("7_vnhju")
+metadata/_custom_type_script = "uid://dntp60my5f65m"
+
+[sub_resource type="Resource" id="Resource_vbmnr"]
+script = ExtResource("13_7bpd6")
+bullet_count = 3
+spread = 1.0471975511965976
+metadata/_custom_type_script = "uid://t5lnmlng1vey"
+
+[sub_resource type="Resource" id="Resource_wmp00"]
+script = ExtResource("14_jr3ht")
+pattern = SubResource("Resource_vbmnr")
+stack_count = 6
+min_speed = 60.0
+max_speed = 160.0
+metadata/_custom_type_script = "uid://drxrjgbmeglwp"
+
+[sub_resource type="Resource" id="Resource_fouyt"]
+script = ExtResource("15_hqscp")
+pattern = SubResource("Resource_wmp00")
+metadata/_custom_type_script = "uid://b00hsbakgtsi0"
+
+[sub_resource type="Resource" id="Resource_0243l"]
+script = ExtResource("5_aka0y")
+behavior = SubResource("Resource_jr3ht")
+hitbox_size = Vector2i(6, 6)
+base_graphics = Array[ExtResource("6_aka0y")]([ExtResource("6_3hyls")])
+overlay_graphics = Array[ExtResource("6_aka0y")]([ExtResource("8_vnhju")])
+colors = Array[Color]([Color(1, 0, 0, 1), Color(1, 1, 0, 1), Color(1, 0.49803922, 0, 1)])
+pattern = SubResource("Resource_fouyt")
+metadata/_custom_type_script = "uid://vus1a0flwtnm"
+
+[node name="Tesu" type="Node2D" node_paths=PackedStringArray("first_phase")]
+script = ExtResource("1_8sblh")
+first_phase = NodePath("Phases/Still")
+metadata/_custom_type_script = "uid://b6ae108uhk7hk"
+
+[node name="Phases" type="Node" parent="."]
+
+[node name="Still" type="Node" parent="Phases" node_paths=PackedStringArray("next_phase")]
+script = ExtResource("2_vnn1v")
+hp = 200
+next_phase = NodePath("../MidwayLeft")
+metadata/_custom_type_script = "uid://nyslrh651s8u"
+
+[node name="MidwayLeft" type="Node" parent="Phases" node_paths=PackedStringArray("next_phase")]
+script = ExtResource("2_vnn1v")
+hp = 100
+next_phase = NodePath("../Pinch")
+metadata/_custom_type_script = "uid://nyslrh651s8u"
+
+[node name="Pinch" type="Node" parent="Phases"]
+script = ExtResource("2_vnn1v")
+hp = 100
+metadata/_custom_type_script = "uid://nyslrh651s8u"
+
+[node name="Sounds" type="Node" parent="."]
+
+[node name="HurtSound" type="AudioStreamPlayer" parent="Sounds"]
+unique_name_in_owner = true
+stream = ExtResource("3_vnhju")
+max_polyphony = 8
+
+[node name="Body" type="Node2D" parent="."]
+position = Vector2(120, 80)
+
+[node name="Movements" type="AnimationPlayer" parent="Body"]
+libraries = {
+&"": SubResource("AnimationLibrary_16jkj")
+}
+blend_times = [&"midway_left", &"pinch", 2.0]
+
+[node name="Graphic" type="Sprite2D" parent="Body"]
+texture = ExtResource("3_vnn1v")
+
+[node name="PlayerBulletDetector" type="Area2D" parent="Body"]
+collision_layer = 0
+collision_mask = 4
+monitorable = false
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Body/PlayerBulletDetector"]
+shape = SubResource("RectangleShape2D_vnn1v")
+
+[node name="BasicRandomSpread" type="Node2D" parent="Body" node_paths=PackedStringArray("spawn_parent")]
+script = ExtResource("4_duqw0")
+spawn_parent = NodePath("../../Bullets")
+preset = SubResource("Resource_4tcmc")
+metadata/_custom_type_script = "uid://df8w64703kw0c"
+
+[node name="SpawnRandomBasic" type="Timer" parent="Body/BasicRandomSpread"]
+process_callback = 0
+wait_time = 0.5
+
+[node name="MidwayMadness" type="Node2D" parent="Body" node_paths=PackedStringArray("spawn_parent")]
+script = ExtResource("4_duqw0")
+spawn_parent = NodePath("../../Bullets")
+preset = SubResource("Resource_5v8uu")
+metadata/_custom_type_script = "uid://df8w64703kw0c"
+
+[node name="SpawnMidwayMadness" type="Timer" parent="Body/MidwayMadness"]
+process_callback = 0
+wait_time = 0.5
+
+[node name="Pinch" type="Node2D" parent="Body" node_paths=PackedStringArray("spawn_parent")]
+script = ExtResource("4_duqw0")
+spawn_parent = NodePath("../../Bullets")
+preset = SubResource("Resource_0243l")
+metadata/_custom_type_script = "uid://df8w64703kw0c"
+
+[node name="SpawnPinch" type="Timer" parent="Body/Pinch"]
+process_callback = 0
+wait_time = 0.75
+
+[node name="Bullets" type="Node2D" parent="."]
+
+[connection signal="damaged" from="." to="Sounds/HurtSound" method="play" unbinds=1]
+[connection signal="ended" from="Phases/Still" to="Body/BasicRandomSpread/SpawnRandomBasic" method="stop"]
+[connection signal="started" from="Phases/Still" to="Body/BasicRandomSpread/SpawnRandomBasic" method="start"]
+[connection signal="ended" from="Phases/MidwayLeft" to="Body/MidwayMadness/SpawnMidwayMadness" method="stop"]
+[connection signal="started" from="Phases/MidwayLeft" to="Body/MidwayMadness/SpawnMidwayMadness" method="start"]
+[connection signal="started" from="Phases/MidwayLeft" to="Body/Movements" method="play" binds= [&"midway_left"]]
+[connection signal="started" from="Phases/Pinch" to="Body/Pinch/SpawnPinch" method="start"]
+[connection signal="started" from="Phases/Pinch" to="Body/Movements" method="play" binds= [&"pinch"]]
+[connection signal="area_entered" from="Body/PlayerBulletDetector" to="." method="hurt" unbinds=1]
+[connection signal="timeout" from="Body/BasicRandomSpread/SpawnRandomBasic" to="Body/BasicRandomSpread" method="spawn_preset"]
+[connection signal="timeout" from="Body/MidwayMadness/SpawnMidwayMadness" to="Body/MidwayMadness" method="spawn_preset"]
+[connection signal="timeout" from="Body/Pinch/SpawnPinch" to="Body/Pinch" method="spawn_preset"]

objects/bosses/tesu_old.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=14 format=3 uid="uid://b1rm2x7lofhkm"]
 
-[ext_resource type="Script" uid="uid://cv578r7dikm6r" path="res://objects/bosses/tesu.gd" id="1_aikw2"]
+[ext_resource type="Script" uid="uid://cv578r7dikm6r" path="res://objects/bosses/tesu_old.gd" id="1_aikw2"]
 [ext_resource type="Texture2D" uid="uid://y0c5cddwa216" path="res://graphics/boss_sprites/tesu.png" id="1_h31ol"]
 [ext_resource type="AudioStream" uid="uid://dwffpsx7xlfla" path="res://audio/sounds/boss_hit.ogg" id="3_aikw2"]
 [ext_resource type="PackedScene" uid="uid://cciq2vk8sex8w" path="res://objects/bullet_emitter/test_bullet_emitter.tscn" id="4_jhpyq"]

scenes/1d_vslice.tscn

@@ -3,7 +3,7 @@
 [ext_resource type="PackedScene" uid="uid://q2fys6o0jy6w" path="res://objects/starfield/starfield.tscn" id="1_gl3rp"]
 [ext_resource type="Texture2D" uid="uid://cokpdf3gw10kr" path="res://space.png" id="2_nv70j"]
 [ext_resource type="PackedScene" uid="uid://c714s5d7d5765" path="res://objects/player/player.tscn" id="3_fyu15"]
-[ext_resource type="PackedScene" uid="uid://b1rm2x7lofhkm" path="res://objects/bosses/tesu.tscn" id="4_0cr18"]
+[ext_resource type="PackedScene" uid="uid://b1rm2x7lofhkm" path="res://objects/bosses/tesu_old.tscn" id="4_0cr18"]
 [ext_resource type="AudioStream" uid="uid://dftw8ufcgjbft" path="res://audio/music/04 - Stage 2 (Purple Sea).mp3" id="5_yu621"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_ikr60"]

scenes/new_vslice.tscn

@@ -0,0 +1,30 @@
+[gd_scene load_steps=5 format=3 uid="uid://cvuaxqqm3sfiw"]
+
+[ext_resource type="PackedScene" uid="uid://q2fys6o0jy6w" path="res://objects/starfield/starfield.tscn" id="1_2jclk"]
+[ext_resource type="PackedScene" uid="uid://c714s5d7d5765" path="res://objects/player/player.tscn" id="2_gadir"]
+[ext_resource type="AudioStream" uid="uid://dftw8ufcgjbft" path="res://audio/music/04 - Stage 2 (Purple Sea).mp3" id="2_oxyio"]
+[ext_resource type="PackedScene" uid="uid://bsgqhb8qak75u" path="res://objects/bosses/tesu/tesu.tscn" id="3_i608b"]
+
+[node name="TestScene" type="Node"]
+
+[node name="Background" type="CanvasLayer" parent="."]
+layer = -10
+
+[node name="Starfield" type="SubViewportContainer" parent="Background"]
+offset_right = 240.0
+offset_bottom = 320.0
+
+[node name="SubViewport" parent="Background/Starfield" instance=ExtResource("1_2jclk")]
+size = Vector2i(240, 320)
+
+[node name="Music" type="AudioStreamPlayer" parent="."]
+stream = ExtResource("2_oxyio")
+autoplay = true
+parameters/looping = true
+
+[node name="Player" parent="." instance=ExtResource("2_gadir")]
+position = Vector2(122, 283)
+
+[node name="Tesu" parent="." instance=ExtResource("3_i608b")]
+
+[connection signal="defeated" from="Tesu" to="Tesu" method="queue_free"]

scenes/test_scene_haze.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=15 format=3 uid="uid://dxsp66qpvm65b"]
+[gd_scene load_steps=19 format=3 uid="uid://dxsp66qpvm65b"]
 
 [ext_resource type="PackedScene" uid="uid://q2fys6o0jy6w" path="res://objects/starfield/starfield.tscn" id="1_4oowd"]
 [ext_resource type="PackedScene" uid="uid://c714s5d7d5765" path="res://objects/player/player.tscn" id="2_j8ivh"]
@@ -9,6 +9,8 @@
 [ext_resource type="Script" uid="uid://vus1a0flwtnm" path="res://systems/bullets/bullet_preset.gd" id="6_sle1e"]
 [ext_resource type="Texture2D" uid="uid://cgqgb84k38tbe" path="res://graphics/bullets/normal_bullet/test_bullet_overlay.png" id="7_sle1e"]
 [ext_resource type="Script" uid="uid://t5lnmlng1vey" path="res://systems/bullets/spawn_patterns/spread_pattern.gd" id="8_sle1e"]
+[ext_resource type="Script" uid="uid://drxrjgbmeglwp" path="res://systems/bullets/spawn_patterns/stacked_spawn_pattern.gd" id="9_c0i5a"]
+[ext_resource type="Script" uid="uid://b00hsbakgtsi0" path="res://systems/bullets/spawn_patterns/targetted_spawn_pattern.gd" id="9_sle1e"]
 
 [sub_resource type="Resource" id="Resource_c0i5a"]
 script = ExtResource("4_4oowd")
@@ -31,10 +33,22 @@ metadata/_custom_type_script = "uid://0ognvvq2ncd7"
 [sub_resource type="Resource" id="Resource_uu3sg"]
 script = ExtResource("8_sle1e")
 bullet_count = 3
-bullet_speed = 60.0
 spread = 1.0471975511965976
 metadata/_custom_type_script = "uid://t5lnmlng1vey"
 
+[sub_resource type="Resource" id="Resource_etmxr"]
+script = ExtResource("9_c0i5a")
+pattern = SubResource("Resource_uu3sg")
+stack_count = 6
+min_speed = 60.0
+max_speed = 180.0
+metadata/_custom_type_script = "uid://drxrjgbmeglwp"
+
+[sub_resource type="Resource" id="Resource_377ep"]
+script = ExtResource("9_sle1e")
+pattern = SubResource("Resource_etmxr")
+metadata/_custom_type_script = "uid://b00hsbakgtsi0"
+
 [sub_resource type="Resource" id="Resource_hxqcc"]
 script = ExtResource("6_sle1e")
 behavior = SubResource("Resource_t1bs8")
@@ -42,9 +56,9 @@ hitbox_size = Vector2i(6, 6)
 base_graphics = Array[ExtResource("4_4oowd")]([SubResource("Resource_c0i5a")])
 overlay_graphics = Array[ExtResource("4_4oowd")]([SubResource("Resource_1xo0o")])
 colors = Array[Color]([Color(1, 0, 0, 1), Color(0, 0, 1, 1), Color(0, 1, 0, 1), Color(1, 1, 0, 1)])
-pattern = SubResource("Resource_uu3sg")
+pattern = SubResource("Resource_377ep")
 rounds = 99999999
-round_delay = 0.2
+round_delay = 0.75
 metadata/_custom_type_script = "uid://vus1a0flwtnm"
 
 [node name="TestScene" type="Node"]

systems/boss/boss.gd

@@ -0,0 +1,34 @@
+class_name Boss
+extends Node2D
+
+
+signal damaged(damage: int)
+signal defeated()
+
+
+@export var first_phase: BossPhase
+
+
+var current_phase: BossPhase
+
+
+func _ready() -> void:
+	if first_phase:
+		current_phase = first_phase
+		current_phase.ended.connect(_on_phase_ended, CONNECT_ONE_SHOT)
+		first_phase.start_phase()
+
+
+func hurt(damage: int = 1) -> void:
+	if current_phase:
+		CurrentGame.change_score(100)
+		current_phase.hurt(damage)
+		damaged.emit(damage)
+
+
+func _on_phase_ended() -> void:
+	current_phase = current_phase.next_phase
+	if current_phase:
+		current_phase.ended.connect(_on_phase_ended, CONNECT_ONE_SHOT)
+	else:
+		defeated.emit()

systems/boss/boss.gd.uid

@@ -0,0 +1 @@
+uid://b6ae108uhk7hk

systems/boss/boss_phase.gd

@@ -0,0 +1,62 @@
+class_name BossPhase
+extends Node
+
+
+signal started()
+signal ended()
+signal damaged(damage: int)
+
+
+## Amount of HP this boss stage has. If 0, the boss is invulnerable during
+## this phase and must survive until time runs out or [method end_phase] is called.
+@export_range(0, 1, 1, "or_greater") var hp: int = 0
+## "Survival Time" of the phase. The phase will end when time is up, whether
+## HP has been depleted or not.
+@export_range(0.0, 1.0, 0.01, "or_greater", "suffix:s") var time: float = INF
+
+## The phase to automatically proceed to when this phase ends.
+@export var next_phase: BossPhase
+
+
+## [code]true[/code] if the phase is currently active.
+var active: bool = false
+
+
+var hp_left: int:
+	set(value):
+		hp_left = value
+		if active and hp_left <= 0 and hp > 0:
+			end_phase()
+
+var time_left: float = INF:
+	set(value):
+		time_left = value
+		if active and time_left <= 0.0:
+			end_phase()
+
+
+func _physics_process(delta: float) -> void:
+	if active:
+		time_left -= delta
+
+
+func start_phase() -> void:
+	if not active:
+		hp_left = hp
+		time_left = time
+		active = true
+		started.emit()
+
+
+func end_phase() -> void:
+	if active:
+		active = false
+		ended.emit()
+		if next_phase:
+			next_phase.start_phase()
+
+
+func hurt(damage: int) -> void:
+	if active:
+		hp_left = maxi(0, hp_left - damage)
+		damaged.emit(damage)

systems/boss/boss_phase.gd.uid

@@ -0,0 +1 @@
+uid://nyslrh651s8u

systems/bullets/danmaku_emitter.gd

@@ -0,0 +1,19 @@
+class_name DanmakuEmitter
+extends Node2D
+
+
+@export var spawn_parent: Node2D
+@export var preset: BulletPreset
+
+
+func spawn_preset() -> void:
+	var bullet_set = BulletSet.new()
+	bullet_set.preset = preset
+	bullet_set.global_position = global_position
+	bullet_set.global_rotation = global_rotation
+	spawn_parent.add_child(bullet_set)
+
+
+func clear_bullets() -> void:
+	for child in spawn_parent.get_children():
+		child.queue_free()

systems/bullets/danmaku_emitter.gd.uid

@@ -0,0 +1 @@
+uid://df8w64703kw0c

systems/bullets/spawn_patterns/randomized_spawn_pattern.gd

@@ -1,5 +1,5 @@
 @tool
-class_name SpawnPatternRandomizer
+class_name RandomizedSpawnPattern
 extends BulletSpawnPattern
 ## Randomizes properties of a child [BulletSpawnPattern] each [member iteration].
 ##

systems/bullets/spawn_patterns/stacked_spawn_pattern.gd

@@ -1,5 +1,5 @@
 @tool
-class_name SpawnPatternStacker
+class_name StackedSpawnPattern
 extends BulletSpawnPattern
 ## Spawns a pattern in a "stack". The pattern will be spawned multiple
 ## times at once with a varying [code]bullet_speed[/code].

systems/bullets/spawn_patterns/targetted_spawn_pattern.gd

@@ -0,0 +1,15 @@
+class_name TargettedSpawnPattern
+extends BulletSpawnPattern
+
+
+@export var pattern: BulletSpawnPattern
+
+
+func _spawn_bullets(bullet_set: BulletSet, preset: BulletPreset) -> void:
+	var original_spawn_rotation = bullet_set.spawn_rotation
+	var player = bullet_set.get_tree().get_first_node_in_group(&"player") as Player
+	if player:
+		var local_player_pos = bullet_set.to_local(player.global_position)
+		bullet_set.spawn_rotation = local_player_pos.angle()
+	pattern.spawn_bullets(bullet_set, preset)
+	bullet_set.spawn_rotation = original_spawn_rotation

systems/bullets/spawn_patterns/targetted_spawn_pattern.gd.uid

@@ -0,0 +1 @@
+uid://b00hsbakgtsi0