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game: add shader to indicate low hp

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Torjus Håkestad
2025-08-21 02:10:09 +02:00
parent 632643a130
commit 8f02850a73
7 changed files with 92 additions and 1 deletions
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26
scenes/managers/ui/main_ui.gd
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@@ -5,9 +5,35 @@ extends Control
@onready var player_ui: PlayerUI = $CanvasLayer/PlayerUI
@onready var debug_ui: DebugUI = $CanvasLayer/DebugUI
@onready var level_up_ui: LevelUpUI = $CanvasLayer/LevelUpUI
@onready var low_hp_indicator: ColorRect = $CanvasLayer/LowHPIndicator
var elapsed_time: float
func _ready() -> void:
pause_ui.visible = false
player_ui.visible = true
level_up_ui.visible = false
low_hp_indicator.visible = false
GlobalConst.sig_on_player_hp_change.connect(_on_player_hp_change)
GlobalConst.sig_toggle_low_hp_shader.connect(_on_toggle_low_hp_shader)
func _process(delta: float) -> void:
elapsed_time += delta
if low_hp_indicator.visible:
low_hp_indicator.material.set_shader_parameter("time", elapsed_time)
func _on_player_hp_change(hp: float, max_hp: float):
print_debug("got sig")
var percent_hp = hp / max_hp * 100
if percent_hp < 40:
low_hp_indicator.visible = true
low_hp_indicator.material.set_shader_parameter("damage_amount", 1 - (percent_hp / 100))
else:
low_hp_indicator.visible = false
func _on_toggle_low_hp_shader(toggled_on: bool):
low_hp_indicator.visible = !low_hp_indicator.visible

18
scenes/managers/ui/main_ui.tscn
View File

@@ -1,11 +1,19 @@
[gd_scene load_steps=6 format=3 uid="uid://b18uib08hvdpq"]
[gd_scene load_steps=8 format=3 uid="uid://b18uib08hvdpq"]
[ext_resource type="Script" uid="uid://dcxc70fvu7kl2" path="res://scenes/managers/ui/main_ui.gd" id="1_3a826"]
[ext_resource type="Script" uid="uid://sjnxf0hj3egp" path="res://scenes/managers/ui/pause_ui.gd" id="1_lke1m"]
[ext_resource type="Shader" uid="uid://dnwiwj1ak1bu5" path="res://assets/shaders/screen_low_hp.gdshader" id="2_lcbsd"]
[ext_resource type="Script" uid="uid://dbq74tvxtpfjc" path="res://scenes/managers/ui/player_ui.gd" id="3_gaipe"]
[ext_resource type="Script" uid="uid://d2o6tqnqg2o25" path="res://scenes/managers/ui/debug_ui.gd" id="4_217l8"]
[ext_resource type="PackedScene" uid="uid://isg7vt4l7eem" path="res://scenes/managers/ui/level_up_ui.tscn" id="5_cfhdr"]
[sub_resource type="ShaderMaterial" id="ShaderMaterial_cg7ol"]
shader = ExtResource("2_lcbsd")
shader_parameter/damage_amount = 0.5
shader_parameter/noise_strength = 0.2
shader_parameter/pulse_strength = 0.05
shader_parameter/time = 0.0
[node name="MainUI" type="Control"]
layout_mode = 3
anchors_preset = 15
@@ -17,6 +25,14 @@ script = ExtResource("1_3a826")
[node name="CanvasLayer" type="CanvasLayer" parent="."]
[node name="LowHPIndicator" type="ColorRect" parent="CanvasLayer"]
material = SubResource("ShaderMaterial_cg7ol")
anchors_preset = 15
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2
[node name="PauseUI" type="Control" parent="CanvasLayer"]
layout_mode = 3
anchors_preset = 15