From 6bf89cf3f5cecf187f0eded208ce17cfb5fa6574 Mon Sep 17 00:00:00 2001
From: Bixilon <bixilon@bixilon.de>
Date: Fri, 28 Apr 2023 15:22:42 +0200
Subject: [PATCH] builder apply (multipart): combine model to built one

---
 .../block/state/builder/BuilderApply.kt       | 33 ++++++++++++++-
 .../models/block/state/builder/BuiltModel.kt  | 40 +++++++++++++++++++
 2 files changed, 72 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuiltModel.kt

diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuilderApply.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuilderApply.kt
index 11324a884..cf6911f53 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuilderApply.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuilderApply.kt
@@ -13,10 +13,15 @@
 
 package de.bixilon.minosoft.gui.rendering.models.block.state.builder
 
+import de.bixilon.minosoft.data.direction.Directions
 import de.bixilon.minosoft.gui.rendering.models.block.state.apply.BlockStateApply
+import de.bixilon.minosoft.gui.rendering.models.block.state.baked.BakedFace
 import de.bixilon.minosoft.gui.rendering.models.block.state.baked.BakedModel
+import de.bixilon.minosoft.gui.rendering.models.block.state.baked.BakingUtil.compact
+import de.bixilon.minosoft.gui.rendering.models.block.state.baked.SideSize
 import de.bixilon.minosoft.gui.rendering.models.block.state.render.BlockRender
 import de.bixilon.minosoft.gui.rendering.system.base.texture.TextureManager
+import de.bixilon.minosoft.gui.rendering.system.base.texture.texture.AbstractTexture
 
 class BuilderApply(
     val applies: List<BlockStateApply>
@@ -37,6 +42,32 @@ class BuilderApply(
 
         if (static.isEmpty() && dynamic.isEmpty()) return null
 
-        TODO("Can not combine them yet")
+        val combined = static.combine()
+
+        if (dynamic.isEmpty()) return combined
+
+
+        return BuiltModel(combined, dynamic.toTypedArray())
+    }
+
+
+    private fun List<BakedModel>.combine(): BakedModel {
+        val faces: Array<MutableList<BakedFace>> = Array(Directions.SIZE) { mutableListOf() }
+        val sizes: Array<MutableList<SideSize.FaceSize>> = Array(Directions.SIZE) { mutableListOf() }
+        var particle: AbstractTexture? = null
+
+        for (model in this) {
+            if (particle == null) {
+                particle = model.particle
+            }
+
+            for (direction in Directions) {
+                faces[direction.ordinal] += model.faces[direction.ordinal]
+                sizes[direction.ordinal] += model.sizes[direction.ordinal].sizes
+            }
+        }
+
+        // TODO: sizes
+        return BakedModel(faces.compact(), emptyArray(), particle)
     }
 }
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuiltModel.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuiltModel.kt
new file mode 100644
index 000000000..a763bcf26
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/models/block/state/builder/BuiltModel.kt
@@ -0,0 +1,40 @@
+/*
+ * Minosoft
+ * Copyright (C) 2020-2023 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.gui.rendering.models.block.state.builder
+
+import de.bixilon.minosoft.data.registries.blocks.state.BlockState
+import de.bixilon.minosoft.data.world.positions.BlockPosition
+import de.bixilon.minosoft.gui.rendering.models.block.state.baked.BakedModel
+import de.bixilon.minosoft.gui.rendering.models.block.state.render.BlockRender
+import de.bixilon.minosoft.gui.rendering.world.mesh.WorldMesh
+import java.util.*
+
+class BuiltModel(
+    // TODO: this fucks up the rendering order, because it mixes static models with dynamic ones
+    val model: BakedModel,
+    val dynamic: Array<BlockRender>,
+) : BlockRender {
+
+    override fun render(position: BlockPosition, mesh: WorldMesh, random: Random?, state: BlockState, neighbours: Array<BlockState?>, light: ByteArray, tints: IntArray?): Boolean {
+        var rendered = model.render(position, mesh, random, state, neighbours, light, tints)
+
+        for (dynamic in this.dynamic) {
+            if (dynamic.render(position, mesh, random, state, neighbours, light, tints)) {
+                rendered = true
+            }
+        }
+
+        return rendered
+    }
+}