Branch for signal refactoring, singleton bus.

events.gd

@@ -0,0 +1,2 @@
+extends Node
+

events.gd.uid

@@ -0,0 +1 @@
+uid://jibpipn2p1c7

main.tscn

@@ -71,6 +71,8 @@ autoplay = "scroll"
 [node name="CanvasLayer" type="CanvasLayer" parent="."]
 
 [node name="UI" parent="CanvasLayer" instance=ExtResource("4_1bvp3")]
+offset_right = 196.0
+offset_bottom = 36.0
 
 [node name="CenterContainer" type="CenterContainer" parent="CanvasLayer"]
 anchors_preset = 15

player.gd

@@ -1,14 +1,17 @@
 extends Area2D
 
 signal died
-signal shield_changed
+signal shield_changed(max_value: int, old_value: int, new_value: int)
 signal damage_taken
+signal shield_damage
+signal shield_ui
+
 
 var shader_active = false
 
 @onready var screensize = get_viewport_rect().size
 @export var max_shield = 10
-var shield = max_shield:
+var shield: int = max_shield:
     set = set_shield
 @export var speed = 150
 @export var cooldown = 0.25
@@ -25,9 +28,11 @@ func start():
     position = Vector2(screensize.x / 2, screensize.y - 64)
     $GunCooldown.wait_time = cooldown
 
-func set_shield(value):
+func set_shield(value: int):
+    var old_value: int = shield
     shield = min(max_shield, value)
-    shield_changed.emit(max_shield, shield)
+    shield_changed.emit(max_shield, old_value, shield)
+    shield_damage.emit()
     if shield <= 0:
         set_process(false)
         $Ship.hide()
@@ -77,6 +82,7 @@ func _on_area_entered(area):
 
 
 func _on_damage_taken() -> void:
+  emit_signal("shield_ui")
   shader_active = true
   $Ship.material.set_shader_parameter("toggle", 1.0)
   await get_tree().create_timer(1).timeout

progress_bar.gd

@@ -0,0 +1,6 @@
+extends TextureProgressBar
+
+func _ready():
+    self.value = 0
+    var shield_tween = get_tree().create_tween()
+    shield_tween.tween_property(self, "value", 100, 3).set_trans(Tween.TRANS_LINEAR)

progress_bar.gd.uid

@@ -0,0 +1 @@
+uid://b85ktxeoj4b2n

progress_bar.tscn

@@ -0,0 +1,19 @@
+[gd_scene load_steps=4 format=3 uid="uid://c8s7htpdg4v4i"]
+
+[ext_resource type="Texture2D" uid="uid://d11molrkdjjh5" path="res://bar_background.png" id="1_q0tf5"]
+[ext_resource type="Texture2D" uid="uid://bsl3pxvxiuoqg" path="res://bar_foreground.png" id="2_5xu4y"]
+[ext_resource type="Script" uid="uid://b85ktxeoj4b2n" path="res://progress_bar.gd" id="3_5xu4y"]
+
+[node name="ProgressBar" type="TextureProgressBar"]
+anchors_preset = 10
+anchor_right = 1.0
+offset_bottom = 20.0
+grow_horizontal = 2
+nine_patch_stretch = true
+stretch_margin_left = 8
+stretch_margin_top = 8
+stretch_margin_right = 8
+stretch_margin_bottom = 8
+texture_under = ExtResource("1_q0tf5")
+texture_progress = ExtResource("2_5xu4y")
+script = ExtResource("3_5xu4y")

project.godot

@@ -14,6 +14,10 @@ config/name="shmup01b"
 config/features=PackedStringArray("4.5", "Forward Plus")
 config/icon="res://icon.svg"
 
+[autoload]
+
+Events="*res://events.gd"
+
 [display]
 
 window/size/viewport_width=240

ui.gd

@@ -3,12 +3,36 @@ extends MarginContainer
 @onready var shield_bar = $HBoxContainer/ShieldBar
 @onready var score_counter = $HBoxContainer/ScoreCounter
 
+var shader_active = false
+
+func _ready():
+  get_node("Player.Ship").node_ready.connect("shield_ui", self, "_on_shield_ui")
+
 func update_score(value):
     score_counter.display_digits(value)
 
 
-func update_shield(max_value, value):
-    var shield_tween = get_tree().create_tween()
+func update_shield(max_value, value, old_value):
+
     shield_bar.max_value = max_value
     shield_bar.value = value
-    shield_tween.tween_property(shield_bar, "value", "max_value", 3,).set_trans(Tween.TRANS_LINEAR)
+
+    print("update_shield"," ","Current ",(value), " ", "(Max ",(max_value),")"," ","Old Value:"," ",old_value)
+
+    if value >= max_value:
+      print("No need to tween!")
+
+    else:
+      print("I should be tweening!")
+      var tween = create_tween()
+      tween.tween_property(shield_bar, "value", (old_value/max_value)*100, .25).set_trans(Tween.TRANS_LINEAR)
+
+
+
+func _on_shield_ui():
+    print("SHIELD FX!")
+    shader_active = true
+    shield_bar.material.set_shader_parameter("toggle", 1.0)
+    await get_tree().create_timer(1).timeout
+    shader_active = false
+    shield_bar.material.set_shader_parameter("toggle", 0.0)

ui.tscn

@@ -1,10 +1,15 @@
-[gd_scene load_steps=5 format=3 uid="uid://s6wf3egdqtmh"]
+[gd_scene load_steps=7 format=3 uid="uid://s6wf3egdqtmh"]
 
 [ext_resource type="Texture2D" uid="uid://d11molrkdjjh5" path="res://bar_background.png" id="1_m6e0p"]
 [ext_resource type="Script" uid="uid://b544c65halgk4" path="res://ui.gd" id="1_nltto"]
 [ext_resource type="Texture2D" uid="uid://bsl3pxvxiuoqg" path="res://bar_foreground.png" id="2_27fn8"]
+[ext_resource type="Shader" uid="uid://dfywtah53il1m" path="res://player_hit.gdshader" id="2_ibotj"]
 [ext_resource type="PackedScene" uid="uid://5qkcf1cpre32" path="res://score_counter.tscn" id="4_ibotj"]
 
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_n5ude"]
+shader = ExtResource("2_ibotj")
+shader_parameter/toggle = 0.0
+
 [node name="UI" type="MarginContainer"]
 anchors_preset = 10
 anchor_right = 1.0
@@ -20,8 +25,11 @@ script = ExtResource("1_nltto")
 layout_mode = 2
 
 [node name="ShieldBar" type="TextureProgressBar" parent="HBoxContainer"]
+material = SubResource("ShaderMaterial_n5ude")
 custom_minimum_size = Vector2(80, 16)
 layout_mode = 2
+step = 0.0
+value = 100.0
 nine_patch_stretch = true
 stretch_margin_left = 3
 stretch_margin_top = 3
@@ -32,3 +40,5 @@ texture_progress = ExtResource("2_27fn8")
 
 [node name="ScoreCounter" parent="HBoxContainer" instance=ExtResource("4_ibotj")]
 layout_mode = 2
+
+[connection signal="value_changed" from="HBoxContainer/ShieldBar" to="." method="_on_shield_bar_value_changed"]