b0b632df05
- 手持非放置物品（工具/食物）：实体图集物品图标小四边形（原版倾斜角， 双面、alpha test），随挥动动画平移；可放置方块仍为六面立方体 - 动物（牛/猪/羊/鸡）改为方块组合模型（身体+头+腿），按原版皮肤布局 取子矩形贴图，水平面向相机；修复动物 VAO 未捕获 EBO 导致的驱动崩溃 - 僵尸/村民/掉落物广告牌开启 alpha test（透明区域不再显黑块）
127 lines
4.5 KiB
Go
127 lines
4.5 KiB
Go
//go:build gl
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// 实体可视映射：实体类型 → 贴图键/身高/动物模型（渲染.md §5.3）。
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// 动物用方块组合模型（身体+头+四腿）近似原版外观；僵尸/村民用交叉广告牌；
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// 掉落物用物品图标小广告牌。
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package main
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import (
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"mc/internal/entity"
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"mc/internal/item"
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"mc/internal/render"
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)
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// entityVisual 返回实体的贴图键与身高（米）。
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// 动物额外返回外观变体（0 牛 / 1 猪 / 2 羊 / 3 鸡），供方块模型选择。
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func entityVisual(e *entity.Entity, items *item.Registry) (key string, height float32, variant int) {
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switch e.Kind {
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case entity.KindZombie:
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return "entity/zombie/zombie", 1.95, -1
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case entity.KindVillager:
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return "entity/villager/villager", 1.95, -1
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case entity.KindAnimal:
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switch e.ID % 4 {
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case 0:
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return "entity/cow/cow_temperate", 1.4, 0
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case 1:
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return "entity/pig/pig_temperate", 0.9, 1
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case 2:
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return "entity/sheep/sheep", 1.3, 2
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default:
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return "entity/chicken/chicken_temperate", 0.7, 3
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}
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case entity.KindItemDrop:
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d, ok := e.Data.(*entity.Drop)
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if !ok || items == nil {
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return "", 0, -1
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}
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def, ok := items.Get(d.Item)
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if !ok {
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return "", 0, -1
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}
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return def.Texture, 0.45, -1
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default:
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return "", 0, -1
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}
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}
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// rect 构造图集 tile 内归一化子矩形。
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func rect(u0, v0, u1, v1 float32) [4]float32 { return [4]float32{u0, v0, u1, v1} }
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// boxPart 构造模型部件：六面统一用 side 矩形，前/后取中间条带，顶取上条带，底取下条带。
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func boxPart(cx, cy, cz, w, h, d float32, side [4]float32) render.AnimalPart {
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u0, v0, u1, v1 := side[0], side[1], side[2], side[3]
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uw, vh := u1-u0, v1-v0
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front := rect(u0+uw*0.35, v0, u0+uw*0.65, v1) // 前/后面：中间三分之一
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top := rect(u0, v0, u1, v0+vh*0.3)
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bottom := rect(u0, v1-vh*0.3, u1, v1)
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var uv [6][4]float32
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// 顺序同 cubeFaces：顶/底/东/西/南(前)/北(后)
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uv[0], uv[1] = top, bottom
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uv[2], uv[3] = side, side
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uv[4], uv[5] = front, front
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return render.AnimalPart{CX: cx, CY: cy, CZ: cz, W: w, H: h, D: d, UV: uv}
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}
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// animalModel 返回动物方块模型（variant：0 牛 / 1 猪 / 2 羊 / 3 鸡）。
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// 贴图子矩形按原版皮肤布局：头部在纹理左侧、身体在右侧、腿在下部。
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// 图集 tile 内纹理被等比拉伸成 64×64（64×32 原图纵向拉长一倍，矩形已按拉伸后比例折算）。
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func animalModel(variant int) render.AnimalModel {
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switch variant {
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case 0: // 牛：纹理 64×64，内容在上半（v 0–0.5）
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head := rect(0.02, 0.02, 0.48, 0.48)
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body := rect(0.52, 0.02, 0.98, 0.48)
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legs := rect(0.55, 0.30, 0.98, 0.50)
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var m render.AnimalModel
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m.Parts = append(m.Parts,
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boxPart(0, 0.72, 0, 0.92, 0.62, 1.28, body),
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boxPart(0, 1.26, 0.60, 0.56, 0.50, 0.56, head),
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boxPart(-0.34, 0.24, 0.50, 0.22, 0.48, 0.22, legs),
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boxPart(0.34, 0.24, 0.50, 0.22, 0.48, 0.22, legs),
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boxPart(-0.34, 0.24, -0.50, 0.22, 0.48, 0.22, legs),
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boxPart(0.34, 0.24, -0.50, 0.22, 0.48, 0.22, legs),
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)
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return m
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case 1: // 猪：纹理 64×64，内容在上半
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head := rect(0.14, 0.03, 0.48, 0.45)
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body := rect(0.52, 0.03, 0.98, 0.45)
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legs := rect(0.60, 0.30, 0.98, 0.50)
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var m render.AnimalModel
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m.Parts = append(m.Parts,
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boxPart(0, 0.50, 0, 0.76, 0.44, 1.02, body),
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boxPart(0, 0.86, 0.50, 0.50, 0.42, 0.50, head),
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boxPart(-0.28, 0.15, 0.42, 0.18, 0.30, 0.18, legs),
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boxPart(0.28, 0.15, 0.42, 0.18, 0.30, 0.18, legs),
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boxPart(-0.28, 0.15, -0.42, 0.18, 0.30, 0.18, legs),
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boxPart(0.28, 0.15, -0.42, 0.18, 0.30, 0.18, legs),
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)
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return m
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case 2: // 羊：纹理 64×32（tile 内 v 拉长一倍）
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head := rect(0.02, 0.02, 0.26, 0.40)
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body := rect(0.50, 0.15, 1.00, 0.72)
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legs := rect(0.62, 0.50, 0.95, 0.85)
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var m render.AnimalModel
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m.Parts = append(m.Parts,
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boxPart(0, 0.72, 0, 0.92, 0.60, 1.26, body),
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boxPart(0, 1.20, 0.60, 0.50, 0.46, 0.50, head),
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boxPart(-0.33, 0.21, 0.50, 0.20, 0.42, 0.20, legs),
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boxPart(0.33, 0.21, 0.50, 0.20, 0.42, 0.20, legs),
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boxPart(-0.33, 0.21, -0.50, 0.20, 0.42, 0.20, legs),
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boxPart(0.33, 0.21, -0.50, 0.20, 0.42, 0.20, legs),
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)
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return m
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default: // 鸡：纹理 64×32
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head := rect(0.02, 0.05, 0.28, 0.55)
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body := rect(0.28, 0.10, 0.70, 0.75)
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legs := rect(0.30, 0.55, 0.60, 0.80)
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var m render.AnimalModel
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m.Parts = append(m.Parts,
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boxPart(0, 0.36, 0, 0.44, 0.40, 0.52, body),
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boxPart(0, 0.66, 0.24, 0.32, 0.30, 0.32, head),
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boxPart(-0.14, 0.10, 0.18, 0.09, 0.20, 0.09, legs),
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boxPart(0.14, 0.10, 0.18, 0.09, 0.20, 0.09, legs),
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)
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return m
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}
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}
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