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This commit is contained in:
@@ -1,29 +1,51 @@
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shader_type spatial;
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// 面部 = 两层贴图的合成：底图（预设脸）+ 笔画层（玩家自绘），后者带 alpha 盖在前面。
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// 两层都用「面部孤岛重映射后的 UV」采样，所以一张方形小图就能正好铺满整张脸。
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// 全身 shader：body_mesh 现在只有一个材质 mat_body，所以身体底色照常取它的 BaseColor，
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// 脸部**不再单独换材质**，而是在同一个 shader 里，只在指定 UV 矩形内把表情和手绘叠上去。
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// 这样脸和头部走的是同一套材质、同一套光照，不会再出现独立面片的色块边界。
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//
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// 为什么不是直接把贴图换掉：画布只装笔画、不装底图，橡皮擦掉笔画后露出来的是预设脸，
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// 而不是把脸擦成黑洞。这也是它能一边切预设一边保留手绘笔画的原因。
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// 贴图 alpha 只表示「墨线覆盖率」，绝不写进空间 ALPHA —— body_mesh 的面片必须保持不透明。
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// 面部 UV 孤岛（实测自 mouse.glb 的 body_mesh surface 1 "face"）：
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// u 0.142~0.356，v 0.038~0.238。v 往下外扩到 0.031 是为了取成正方形，避免拉伸。
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uniform vec2 face_uv_min = vec2(0.142, 0.031);
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uniform float face_uv_size : hint_range(0.01, 1.0) = 0.214;
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// 预设脸。没接上时给张白图，至少不会一片黑
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uniform sampler2D base_tex : source_color, filter_linear, repeat_disable,
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uniform sampler2D body_tex : source_color, filter_linear, repeat_disable,
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hint_default_white;
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// 玩家笔画层（一个透明底的 SubViewport）。没接上时给张全透明图，等于没画
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uniform vec4 body_tint : source_color = vec4(1.0, 1.0, 1.0, 1.0);
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uniform float surface_roughness : hint_range(0.0, 1.0) = 0.65;
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uniform float surface_metallic : hint_range(0.0, 1.0) = 0.0;
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// 脸部在 body_mesh 的 UV 上占的矩形。**模型重导 / 改 UV 之后必须复核这里**：
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// 它要整块落在头部那块 UV 孤岛里面，否则表情会画到别的部位上。
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uniform vec2 face_uv_min = vec2(0.695, 0.682);
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uniform vec2 face_uv_size = vec2(0.301, 0.314);
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// 头部 UV 的 v 是「越往上越大」，而贴图第 0 行在上边，所以默认要把 v 翻过来，
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// 否则表情上下颠倒。
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uniform bool face_uv_flip_y = true;
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// 表情底图：内置表情是保留原排布、已去底的透明图集；本地表情是整张透明 PNG。
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uniform sampler2D base_tex : source_color, filter_linear, repeat_disable,
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hint_default_transparent;
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uniform vec2 base_uv_min = vec2(0.0, 0.0);
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uniform vec2 base_uv_size = vec2(1.0, 1.0);
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// 玩家笔画层（透明底）
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uniform sampler2D paint_tex : source_color, filter_linear, repeat_disable,
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hint_default_transparent;
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void fragment() {
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vec2 uv = (UV - face_uv_min) / face_uv_size;
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vec4 base = texture(base_tex, uv);
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vec4 paint = texture(paint_tex, uv);
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// 全身底色都来自 mat_body 的 BaseColor，表情只是盖在脸上
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vec3 albedo = texture(body_tex, UV).rgb * body_tint.rgb;
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ALBEDO = mix(base.rgb, paint.rgb, paint.a);
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// 顶掉 GLB 里 lambert1 那套手感，不然脸会比身体亮一块
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ROUGHNESS = 1.0;
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METALLIC = 0.0;
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vec2 face_uv = (UV - face_uv_min) / face_uv_size;
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if (face_uv_flip_y) {
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face_uv.y = 1.0 - face_uv.y;
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}
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// 用 step 而不是 if：采样留在统一控制流里，免得 mipmap 的导数在分支里未定义
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float mask = step(0.0, face_uv.x) * step(face_uv.x, 1.0)
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* step(0.0, face_uv.y) * step(face_uv.y, 1.0);
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vec4 base = texture(base_tex, base_uv_min + face_uv * base_uv_size);
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vec4 paint = texture(paint_tex, face_uv);
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// 透明处保持身体底色 —— 所以脸和周围不可能出现底色差
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albedo = mix(albedo, base.rgb, base.a * mask);
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albedo = mix(albedo, paint.rgb, paint.a * mask);
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ALBEDO = albedo;
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ROUGHNESS = surface_roughness;
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METALLIC = surface_metallic;
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}
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@@ -1,54 +1,58 @@
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class_name FaceRig
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extends Node
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## 角色的脸：把 mesh 上那个「face」surface 换成自定义材质，
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## 材质把「预设底图」和「玩家自绘的笔画层」合成起来。
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##
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## 笔画层是一张常驻的 Image（不是 SubViewport）—— 这样即使绘画面板没打开，
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## 游戏内的脸也一直是玩家画的那张。绘画面板只是把 painter.texture 显示出来，
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## 把鼠标坐标换算好之后喂给 painter。
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## 角色脸部：body_mesh 现在**只有一个材质**，所以这里不再换材质，
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## 而是把 mat_body 换成「全身 shader」：身体照常取它的 BaseColor，
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## 只在脸部的 UV 矩形内叠加表情贴图和玩家手绘。
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const SHADER_PATH := "res://character/player/face/face_paint.gdshader"
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## 存档：选的是哪张预设
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const SAVE_PRESET := "user://face_preset.json"
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## 存档：笔画层（透明底 PNG）
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const ATLAS_PATH := "res://character/player/face/presets/face_atlas_transparent.png"
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const LEGACY_PRESET_SAVE := "user://face_preset.json"
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const SAVE_PAINT := "user://face_paint.png"
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const LIBRARY_DIR := "user://face_library"
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const LIBRARY_INDEX := "user://face_library/index.json"
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## 图集 rect 来自最初那张 1024² 表情图：face_01=(145,32,219)，face_02=(152,290,205)。
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## 每个条目用各自的采样矩形，贴图都是项目里的 face_atlas_transparent.png（原图已随模型删掉）。
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const BUILTIN_EXPRESSIONS := [
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{"id": "builtin:face_01", "name": "预设表情 1", "rect": Rect2(145.0 / 1024.0, 32.0 / 1024.0, 219.0 / 1024.0, 219.0 / 1024.0)},
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{"id": "builtin:face_02", "name": "预设表情 2", "rect": Rect2(152.0 / 1024.0, 290.0 / 1024.0, 205.0 / 1024.0, 205.0 / 1024.0)},
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]
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## 联机同步：非本机玩家主动去要脸的次数与间隔。
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## 各端玩家节点出现的先后顺序不保证，头几次请求可能打空，所以要重试。
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const FACE_SYNC_TRIES := 5
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const FACE_SYNC_INTERVAL := 0.8
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## 第一次要之前先等一会儿。实测：主机生成玩家比客户端早几帧，立刻要会打在一个
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## 还没建出来的节点上（Godot 报 "Node not found: Main/<id>/FaceRig"），白刷一堆红字。
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const FACE_SYNC_INITIAL_DELAY := 1.0
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@export_group("接线")
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## 面部所在的 MeshInstance3D 的路径（相对本节点）。默认就是 mouse.glb 里的 body_mesh。
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## 存路径而不是节点引用：节点引用是场景实例化时由 Godot 解析的，实测这里解析不到（拿到 null），
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## 自己在 _ready() 里 get_node_or_null 才稳。
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@export var mesh_path: NodePath = ^"../Body/mouse/MouseRig/Skeleton3D/body_mesh"
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## 面部是第几个 surface。mouse.glb 里是 1，名字就叫 face
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@export var surface_index: int = 1
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## 没有存档时用哪张脸
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@export var default_preset: Texture2D
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## 覆盖第几个 surface。现在 body_mesh 只有一个材质 mat_body，所以是 0。
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@export var surface_index: int = 0
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@export var default_expression_id: String = "builtin:face_01"
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@export_group("画布")
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## 画布边长（像素）。玩家画的笔画坐标就在这个空间里
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@export var canvas_size: int = 512
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## 与两个原始贴图的背景/头部底色完全相同：RGB(137,179,255)。
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@export var skin_color: Color = Color(0.537255, 0.701961, 1.0, 1.0)
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@export_group("面部 UV")
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## 面部孤岛在贴图上的起点（实测自模型）。模型重导后 UV 变了就改这里
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@export var face_uv_min: Vector2 = Vector2(0.142, 0.031)
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## 孤岛的边长（UV 单位）
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@export var face_uv_size: float = 0.214
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## 当前预设的 res:// 路径。存档靠它记住「你选的是哪张脸」
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var preset_path: String = ""
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## 联机时有没有收到过这张脸主人的数据（收到了就不用再重试）
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var _got_face := false
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@export_group("脸部 UV")
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## 脸部矩形在 body_mesh 的 UV 上占的范围（实测自当前模型：头部孤岛是 u 0.695~0.996 / v 0.682~0.996）。
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## 它必须整块落在头部那块 UV 孤岛里；模型重导后 UV 一变，表情就会画歪或跑到别的部位上。
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@export var face_uv_min: Vector2 = Vector2(0.695, 0.682)
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## 脸部矩形的 UV 边长
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@export var face_uv_size: Vector2 = Vector2(0.301, 0.314)
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## 头部 UV 的 v 越往上越大，而贴图第 0 行在上边 —— 不翻就在脸上上下颠倒
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@export var face_uv_flip_y: bool = true
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var mesh: MeshInstance3D
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var material: ShaderMaterial
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var painter: FacePainter
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var selected_expression_id: String = ""
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var selected_expression_name: String = ""
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var selected_expression_texture: Texture2D
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var _atlas_texture: Texture2D
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var _no_base: Texture2D
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var _base_uv_min := Vector2.ZERO
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var _base_uv_size := Vector2.ONE
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var _got_face := false
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func _ready() -> void:
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@@ -57,76 +61,221 @@ func _ready() -> void:
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push_warning("%s 找不到面部 mesh（%s），脸不会有变化" % [get_path(), mesh_path])
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return
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_atlas_texture = load(ATLAS_PATH) as Texture2D
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painter = FacePainter.new(canvas_size)
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painter.name = "FacePainter"
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add_child(painter)
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material = ShaderMaterial.new()
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material.shader = load(SHADER_PATH)
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var body_material := mesh.mesh.surface_get_material(surface_index) as StandardMaterial3D
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if body_material == null:
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push_warning("%s 的 surface %d 不是 StandardMaterial3D，身体底色可能不对" % [mesh_path, surface_index])
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else:
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# 身体底色、粗糙度、金属度都照抄 mat_body —— 脸和身体才可能看起来是同一块皮肤
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var body_tex := body_material.albedo_texture
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if body_tex != null:
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material.set_shader_parameter("body_tex", body_tex)
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# 画布和缩略图垫的底色也跟着身体贴图走，省得和模型对不上。
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# 导入的贴图是压缩格式，get_pixel 之前必须先解压。
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var body_image := body_tex.get_image()
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if body_image != null:
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if body_image.is_compressed():
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body_image.decompress()
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if not body_image.is_empty():
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var body_rgb := body_image.get_pixel(0, 0)
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skin_color = Color(body_rgb.r, body_rgb.g, body_rgb.b, 1.0)
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material.set_shader_parameter("body_tint", body_material.albedo_color)
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material.set_shader_parameter("surface_roughness", body_material.roughness)
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material.set_shader_parameter("surface_metallic", body_material.metallic)
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material.set_shader_parameter("face_uv_min", face_uv_min)
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material.set_shader_parameter("face_uv_size", face_uv_size)
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material.set_shader_parameter("face_uv_flip_y", face_uv_flip_y)
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material.set_shader_parameter("paint_tex", painter.texture)
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mesh.set_surface_override_material(surface_index, material)
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apply_saved()
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# 联机时非本机玩家去要脸。单机（OfflineMultiplayerPeer）不用同步
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var peer := multiplayer.multiplayer_peer
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if peer != null and not (peer is OfflineMultiplayerPeer) and not is_multiplayer_authority():
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_pull_remote_face()
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# ---------------- 对外接口 ----------------
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# ---------------- 表情列表与选择 ----------------
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## 换成某张预设脸。只换底图，玩家画的笔画保留 —— 所以可以边挑预设边留着笔迹。
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func set_preset(tex: Texture2D, path: String = "") -> void:
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if material != null:
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material.set_shader_parameter("base_tex", tex)
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if not path.is_empty():
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preset_path = path
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## 返回内置 atlas 表情和本地保存表情，供角色选择页建缩略图。
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func get_expression_catalog() -> Array[Dictionary]:
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var entries: Array[Dictionary] = []
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for builtin in BUILTIN_EXPRESSIONS:
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var rect: Rect2 = builtin["rect"]
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var thumb := AtlasTexture.new()
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thumb.atlas = _atlas_texture
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thumb.region = Rect2(rect.position * Vector2(1024.0, 1024.0), rect.size * Vector2(1024.0, 1024.0))
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thumb.filter_clip = true
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entries.append({
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"id": builtin["id"], "name": builtin["name"],
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"texture": _atlas_texture, "thumbnail": thumb,
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"uv_min": rect.position, "uv_size": rect.size, "is_atlas": true,
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})
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for row in _read_library_index():
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var id := str(row.get("id", ""))
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var filename := str(row.get("file", ""))
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if id.is_empty() or filename.is_empty():
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continue
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var image := Image.load_from_file("%s/%s" % [LIBRARY_DIR, filename])
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if image == null or image.is_empty():
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continue
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var tex := ImageTexture.create_from_image(image)
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entries.append({
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"id": id, "name": str(row.get("name", "我的表情")),
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"texture": tex, "thumbnail": tex,
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"uv_min": Vector2.ZERO, "uv_size": Vector2.ONE, "is_atlas": false,
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})
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return entries
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func clear_paint() -> void:
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if painter != null:
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## 选择一个内置或本地表情。切换项目时清掉临时笔画，表情项本身是完整表情。
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func select_expression(expression_id: String, clear_paint: bool = true) -> bool:
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for entry in get_expression_catalog():
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if str(entry["id"]) != expression_id:
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continue
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_apply_expression(entry)
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if clear_paint and painter != null:
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painter.clear()
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return true
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return false
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## 「自己画」/取消快照需要的透明空白项，不保存为内置表情。
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func select_blank(clear_paint: bool = true) -> void:
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selected_expression_id = ""
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selected_expression_name = "空白"
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selected_expression_texture = _no_base_texture()
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_base_uv_min = Vector2.ZERO
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_base_uv_size = Vector2.ONE
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_update_shader_expression()
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if clear_paint and painter != null:
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painter.clear()
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## 存：预设路径 + 笔画层。下次进游戏自动读回来
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func _apply_expression(entry: Dictionary) -> void:
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selected_expression_id = str(entry["id"])
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selected_expression_name = str(entry["name"])
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selected_expression_texture = entry["texture"] as Texture2D
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_base_uv_min = entry["uv_min"] as Vector2
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_base_uv_size = entry["uv_size"] as Vector2
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_update_shader_expression()
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func _update_shader_expression() -> void:
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if material == null:
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return
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material.set_shader_parameter("base_tex", selected_expression_texture if selected_expression_texture != null else _no_base_texture())
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material.set_shader_parameter("base_uv_min", _base_uv_min)
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material.set_shader_parameter("base_uv_size", _base_uv_size)
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func _no_base_texture() -> Texture2D:
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if _no_base == null:
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_no_base = ImageTexture.create_from_image(Image.create(2, 2, false, Image.FORMAT_RGBA8))
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return _no_base
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# ---------------- 本地表情库 ----------------
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func save_drawing_as_expression(display_name: String) -> Dictionary:
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if painter == null:
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return {}
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var absolute_dir := ProjectSettings.globalize_path(LIBRARY_DIR)
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var dir_error := DirAccess.make_dir_recursive_absolute(absolute_dir)
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if dir_error != OK and dir_error != ERR_ALREADY_EXISTS:
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push_warning("无法创建本地表情目录：%s" % error_string(dir_error))
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return {}
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var rows := _read_library_index()
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var name := display_name.strip_edges()
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if name.is_empty():
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name = "我的表情 %d" % (rows.size() + 1)
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var id := "user:%d" % Time.get_ticks_usec()
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var filename := id.replace(":", "_") + ".png"
|
||||
var file := FileAccess.open("%s/%s" % [LIBRARY_DIR, filename], FileAccess.WRITE)
|
||||
if file == null:
|
||||
push_warning("无法保存本地表情：%s" % filename)
|
||||
return {}
|
||||
file.store_buffer(painter.to_png_bytes())
|
||||
file.close()
|
||||
|
||||
rows.append({"id": id, "name": name, "file": filename})
|
||||
if not _write_library_index(rows):
|
||||
return {}
|
||||
if not select_expression(id):
|
||||
return {}
|
||||
save()
|
||||
return {"id": id, "name": name}
|
||||
|
||||
|
||||
func _read_library_index() -> Array:
|
||||
if not FileAccess.file_exists(LIBRARY_INDEX):
|
||||
return []
|
||||
var file := FileAccess.open(LIBRARY_INDEX, FileAccess.READ)
|
||||
if file == null:
|
||||
return []
|
||||
var data: Variant = JSON.parse_string(file.get_as_text())
|
||||
return data if data is Array else []
|
||||
|
||||
|
||||
func _write_library_index(rows: Array) -> bool:
|
||||
var file := FileAccess.open(LIBRARY_INDEX, FileAccess.WRITE)
|
||||
if file == null:
|
||||
push_warning("无法更新本地表情索引：%s" % LIBRARY_INDEX)
|
||||
return false
|
||||
file.store_string(JSON.stringify(rows))
|
||||
file.close()
|
||||
return true
|
||||
|
||||
|
||||
# ---------------- 存档 ----------------
|
||||
|
||||
func save() -> void:
|
||||
if painter == null:
|
||||
return
|
||||
painter.save_png(SAVE_PAINT)
|
||||
var f := FileAccess.open(SAVE_PRESET, FileAccess.WRITE)
|
||||
if f == null:
|
||||
push_warning("脸部预设存不下来：%s" % SAVE_PRESET)
|
||||
var file := FileAccess.open(LEGACY_PRESET_SAVE, FileAccess.WRITE)
|
||||
if file == null:
|
||||
push_warning("脸部选择存不下来：%s" % LEGACY_PRESET_SAVE)
|
||||
return
|
||||
f.store_string(JSON.stringify({"preset": preset_path}))
|
||||
file.store_string(JSON.stringify({"expression_id": selected_expression_id}))
|
||||
file.close()
|
||||
|
||||
|
||||
## 读存档；没有（或存的预设已经不在了）就退回 default_preset
|
||||
func apply_saved() -> void:
|
||||
var preset: Texture2D = default_preset
|
||||
var path := default_preset.resource_path if default_preset != null else ""
|
||||
|
||||
if FileAccess.file_exists(SAVE_PRESET):
|
||||
var f := FileAccess.open(SAVE_PRESET, FileAccess.READ)
|
||||
var data: Variant = JSON.parse_string(f.get_as_text()) if f != null else null
|
||||
var expression_id := default_expression_id
|
||||
if FileAccess.file_exists(LEGACY_PRESET_SAVE):
|
||||
var file := FileAccess.open(LEGACY_PRESET_SAVE, FileAccess.READ)
|
||||
var data: Variant = JSON.parse_string(file.get_as_text()) if file != null else null
|
||||
if data is Dictionary:
|
||||
var saved := str(data.get("preset", ""))
|
||||
if not saved.is_empty() and ResourceLoader.exists(saved):
|
||||
preset = load(saved)
|
||||
path = saved
|
||||
|
||||
set_preset(preset, path)
|
||||
expression_id = str(data.get("expression_id", _legacy_expression_id(str(data.get("preset", "")))))
|
||||
if expression_id.is_empty():
|
||||
select_blank(false)
|
||||
elif not select_expression(expression_id, false):
|
||||
select_expression(default_expression_id, false)
|
||||
if painter != null:
|
||||
painter.load_png(SAVE_PAINT)
|
||||
|
||||
|
||||
func _legacy_expression_id(old_path: String) -> String:
|
||||
if old_path.is_empty():
|
||||
return ""
|
||||
if old_path.ends_with("face_02.png"):
|
||||
return "builtin:face_02"
|
||||
if old_path.ends_with("face_01.png"):
|
||||
return "builtin:face_01"
|
||||
return default_expression_id
|
||||
|
||||
|
||||
# ---------------- 联机同步 ----------------
|
||||
# 用「谁缺谁来要」而不是「出生时推」：各端玩家节点出现的先后顺序不保证，
|
||||
# 推的话很可能推给一个还不存在的节点；而请求总是从已经存在的那一端发出去的。
|
||||
|
||||
## 非本机玩家在 _ready 里调，去要这张脸主人的那一份。带重试，因为对端节点可能还没建好。
|
||||
func _pull_remote_face() -> void:
|
||||
await get_tree().create_timer(FACE_SYNC_INITIAL_DELAY).timeout
|
||||
for i in FACE_SYNC_TRIES:
|
||||
@@ -138,25 +287,39 @@ func _pull_remote_face() -> void:
|
||||
|
||||
@rpc("any_peer", "call_remote", "reliable")
|
||||
func _rpc_request_face() -> void:
|
||||
# 只有这张脸的主人回应 —— 别人的脸不该由我来发
|
||||
if not is_multiplayer_authority():
|
||||
return
|
||||
var local_png := PackedByteArray()
|
||||
if selected_expression_id.begins_with("user:") and selected_expression_texture != null:
|
||||
var image := selected_expression_texture.get_image()
|
||||
local_png = image.save_png_to_buffer()
|
||||
_rpc_send_face.rpc_id(
|
||||
multiplayer.get_remote_sender_id(),
|
||||
preset_path,
|
||||
selected_expression_id,
|
||||
local_png,
|
||||
painter.to_png_bytes() if painter != null else PackedByteArray(),
|
||||
)
|
||||
|
||||
|
||||
@rpc("any_peer", "call_remote", "reliable")
|
||||
func _rpc_send_face(preset: String, png: PackedByteArray) -> void:
|
||||
# 只认这张脸主人的回应；本机自己的脸不接受覆盖
|
||||
func _rpc_send_face(expression_id: String, local_png: PackedByteArray, paint_png: PackedByteArray) -> void:
|
||||
if is_multiplayer_authority() or multiplayer.get_remote_sender_id() != get_multiplayer_authority():
|
||||
return
|
||||
_got_face = true
|
||||
if not preset.is_empty() and ResourceLoader.exists(preset):
|
||||
set_preset(load(preset), preset)
|
||||
if png.size() > 0 and painter != null:
|
||||
if expression_id.is_empty():
|
||||
select_blank(false)
|
||||
elif expression_id.begins_with("user:") and local_png.size() > 0:
|
||||
var img := Image.new()
|
||||
if img.load_png_from_buffer(png) == OK:
|
||||
painter.set_image(img)
|
||||
if img.load_png_from_buffer(local_png) == OK:
|
||||
selected_expression_id = expression_id
|
||||
selected_expression_name = "远端玩家表情"
|
||||
selected_expression_texture = ImageTexture.create_from_image(img)
|
||||
_base_uv_min = Vector2.ZERO
|
||||
_base_uv_size = Vector2.ONE
|
||||
_update_shader_expression()
|
||||
else:
|
||||
select_expression(expression_id, false)
|
||||
if paint_png.size() > 0 and painter != null:
|
||||
var paint_image := Image.new()
|
||||
if paint_image.load_png_from_buffer(paint_png) == OK:
|
||||
painter.set_image(paint_image)
|
||||
|
||||
Binary file not shown.
|
Before Width: | Height: | Size: 1.5 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 91 KiB After Width: | Height: | Size: 78 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 119 KiB After Width: | Height: | Size: 100 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 32 KiB |
+4
-4
@@ -2,16 +2,16 @@
|
||||
|
||||
importer="texture"
|
||||
type="CompressedTexture2D"
|
||||
uid="uid://b2yfeejwww5oi"
|
||||
path="res://.godot/imported/face_00_blank.png-258a9c2a268c4896542abf099fbd9d15.ctex"
|
||||
uid="uid://cg7dharvu5svr"
|
||||
path="res://.godot/imported/face_atlas_transparent.png-d56481b0045839c14a1d633b682cc418.ctex"
|
||||
metadata={
|
||||
"vram_texture": false
|
||||
}
|
||||
|
||||
[deps]
|
||||
|
||||
source_file="res://character/player/face/presets/face_00_blank.png"
|
||||
dest_files=["res://.godot/imported/face_00_blank.png-258a9c2a268c4896542abf099fbd9d15.ctex"]
|
||||
source_file="res://character/player/face/presets/face_atlas_transparent.png"
|
||||
dest_files=["res://.godot/imported/face_atlas_transparent.png-d56481b0045839c14a1d633b682cc418.ctex"]
|
||||
|
||||
[params]
|
||||
|
||||
Reference in New Issue
Block a user