From 8db77f03d61a8e272efb89adc9d48ee0130613ed Mon Sep 17 00:00:00 2001
From: limuy <limuyang202011@163.com>
Date: Sun, 25 Aug 2024 10:13:06 +0800
Subject: [PATCH] feat:add light for star wrath

---
 project.godot                             |  1 +
 scenes/fight.tscn                         | 13 ++++++++++++-
 scenes/weapons/star_wrath/star_wrath.tscn |  8 +++++---
 shaders/virtual.gdshader                  | 21 ++++++++++++---------
 4 files changed, 30 insertions(+), 13 deletions(-)

diff --git a/project.godot b/project.godot
index f4383aa..4db68c7 100644
--- a/project.godot
+++ b/project.godot
@@ -69,3 +69,4 @@ locale/translations_pot_files=PackedStringArray("res://scenes/multi_game.tscn")
 [rendering]
 
 textures/canvas_textures/default_texture_filter=0
+viewport/hdr_2d=true
diff --git a/scenes/fight.tscn b/scenes/fight.tscn
index ae7b50f..b8890b7 100644
--- a/scenes/fight.tscn
+++ b/scenes/fight.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=27 format=3 uid="uid://cibwxaqnuodid"]
+[gd_scene load_steps=29 format=3 uid="uid://cibwxaqnuodid"]
 
 [ext_resource type="Script" path="res://scenes/fight.gd" id="1_dqpk1"]
 [ext_resource type="Texture2D" uid="uid://byln211i8r3lq" path="res://scenes/Zenith.png" id="1_jsdtx"]
@@ -20,6 +20,13 @@
 [ext_resource type="Texture2D" uid="uid://drljhif31i83o" path="res://scenes/ui/category_panel.png" id="14_miw1s"]
 [ext_resource type="Texture2D" uid="uid://bjxheh0afj37f" path="res://scenes/ui/shield_of_cthulhu.png" id="18_12j3n"]
 
+[sub_resource type="Environment" id="Environment_oaeg7"]
+background_mode = 3
+glow_enabled = true
+glow_blend_mode = 1
+
+[sub_resource type="CameraAttributesPractical" id="CameraAttributesPractical_64jai"]
+
 [sub_resource type="Gradient" id="Gradient_w6p7b"]
 offsets = PackedFloat32Array(0.386487, 0.391892, 0.397297, 0.683784, 1)
 colors = PackedColorArray(0, 0, 0, 1, 0, 0, 0, 1, 0.327103, 0.327103, 0.327103, 1, 0.584112, 0.584112, 0.584112, 1, 1, 1, 1, 1)
@@ -56,6 +63,10 @@ grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_dqpk1")
 
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = SubResource("Environment_oaeg7")
+camera_attributes = SubResource("CameraAttributesPractical_64jai")
+
 [node name="BgColor" type="ColorRect" parent="."]
 layout_mode = 1
 anchors_preset = 15
diff --git a/scenes/weapons/star_wrath/star_wrath.tscn b/scenes/weapons/star_wrath/star_wrath.tscn
index 3d65908..48261b8 100644
--- a/scenes/weapons/star_wrath/star_wrath.tscn
+++ b/scenes/weapons/star_wrath/star_wrath.tscn
@@ -8,9 +8,10 @@
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_t64wj"]
 shader = ExtResource("2_xksic")
-shader_parameter/color_end = Vector4(0.5, 0, 0.5, 0.1)
-shader_parameter/color_start = Vector4(0.5, 0, 0.5, 0.5)
-shader_parameter/alpha_bias = 0.0
+shader_parameter/color = Vector4(0.5, 0, 0.5, 0)
+shader_parameter/alpha_end = 0.0
+shader_parameter/alpha_start = 0.5
+shader_parameter/end_y_position = 0.6
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_qm46a"]
 size = Vector2(28.6936, 31.8029)
@@ -131,6 +132,7 @@ script = ExtResource("3_u5scp")
 star_wrath_origin = ExtResource("4_eglqk")
 
 [node name="StarWrath" type="Sprite2D" parent="StarWrath"]
+self_modulate = Color(1.6, 1.5, 1.5, 1)
 position = Vector2(-100, -60)
 scale = Vector2(2.97559, 2.97559)
 texture = ExtResource("4_ohxcu")
diff --git a/shaders/virtual.gdshader b/shaders/virtual.gdshader
index 02d5851..b8b55ab 100644
--- a/shaders/virtual.gdshader
+++ b/shaders/virtual.gdshader
@@ -1,8 +1,9 @@
 shader_type canvas_item;
 
-uniform vec4 color_end;
-uniform vec4 color_start;
-uniform float alpha_bias = 0;
+uniform vec4 color;
+uniform float alpha_end;
+uniform float alpha_start;
+uniform float end_y_position;
 
 void vertex() {
 	// Called for every vertex the material is visible on.
@@ -11,12 +12,14 @@ void vertex() {
 void fragment() {
 	// Called for every pixel the material is visible on.
 	vec2 screen_coords = SCREEN_UV;
-	// 垂直翻转Y坐标
-	screen_coords.y = (1.0 - screen_coords.y);
-	vec4 gradient_color = color_start + (color_end - color_start) * screen_coords.y * 3.6;
-	// 设置最终颜色
-	COLOR = gradient_color;
-	COLOR.a -= alpha_bias;
+	if(screen_coords.y < end_y_position) {
+		COLOR = vec4(0,0,0,0);
+	} else {
+		// 垂直翻转Y坐标
+		screen_coords.y = (1.0 - screen_coords.y);
+		COLOR = color;
+		COLOR.a = alpha_start + (alpha_end - alpha_start) * screen_coords.y / (end_y_position / 1.5);
+	}
 }
 
 //void light() {