dont rewrite all files

src/main/java/re/imc/geysermodelenginepackgenerator/ExtensionMain.java

@@ -39,7 +39,6 @@ public class ExtensionMain implements Extension {
 
         GeneratorMain.startGenerate(source, generatedPack);
 
-
         Path generatedPackZip = dataFolder().resolve("generated_pack.zip");
 
         try (ZipOutputStream zipOutputStream = new ZipOutputStream(Files.newOutputStream(generatedPackZip))) {

src/main/java/re/imc/geysermodelenginepackgenerator/GeneratorMain.java

@@ -2,10 +2,12 @@ package re.imc.geysermodelenginepackgenerator;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import re.imc.geysermodelenginepackgenerator.generator.*;
 
 import java.io.File;
+import java.io.FileReader;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
@@ -13,6 +15,7 @@ import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.UUID;
 
 public class GeneratorMain {
     public static final Map<String, Entity> entityMap = new HashMap<>();
@@ -42,12 +45,20 @@ public class GeneratorMain {
                 }
                 String modelId = file1.getName().toLowerCase();
 
-                entityMap.put(modelId, new Entity(modelId));
+                Entity entity = new Entity(modelId);
+                entityMap.put(modelId, entity);
+
                 for (File e : file1.listFiles()) {
                     if (e.getName().endsWith(".png")) {
                         textureMap.put(modelId, new Texture(modelId, e.toPath()));
                     }
-
+                    if (e.getName().equals("config.properties")) {
+                        try {
+                            entity.getProperties().load(new FileReader(e));
+                        } catch (IOException ex) {
+                            ex.printStackTrace();
+                        }
+                    }
                     if (e.getName().endsWith(".json")) {
                         try {
                             String json = Files.readString(e.toPath());
@@ -83,13 +94,22 @@ public class GeneratorMain {
             generateManifest = true;
         }
         File[] files = entityFolder.listFiles();
-        if (files == null || files.length < entityMap.size()) {
+        if (files == null || files.length != entityMap.size()) {
             generateManifest = true;
         }
 
         if (generateManifest) {
             output.mkdirs();
             Path path = new File(output, "manifest.json").toPath();
+            if (path.toFile().exists()) {
+                try {
+                    JsonObject manifest = new JsonParser().parse(Files.readString(path)).getAsJsonObject();
+                    manifest.get("header").getAsJsonObject().addProperty("uuid", UUID.randomUUID().toString());
+                    Files.writeString(path, GSON.toJson(manifest));
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            } else {
                 try {
                     Files.writeString(path,
                             PackManifest.generate(), StandardCharsets.UTF_8);
@@ -97,6 +117,7 @@ public class GeneratorMain {
                     e.printStackTrace();
                 }
             }
+        }
 
         animationsFolder.mkdirs();
         entityFolder.mkdirs();
@@ -110,6 +131,9 @@ public class GeneratorMain {
                 stringAnimationEntry.getValue().addHeadBind(geo);
             }
             Path path = animationsFolder.toPath().resolve(stringAnimationEntry.getKey() + ".animation.json");
+            if (path.toFile().exists()) {
+                continue;
+            }
             try {
                 Files.writeString(path, GSON.toJson(stringAnimationEntry.getValue().getJson()), StandardCharsets.UTF_8);
             } catch (IOException e) {
@@ -120,6 +144,9 @@ public class GeneratorMain {
         for (Map.Entry<String, Geometry> stringGeometryEntry : geometryMap.entrySet()) {
             stringGeometryEntry.getValue().modify();
             Path path = modelsFolder.toPath().resolve(stringGeometryEntry.getKey() + ".geo.json");
+            if (path.toFile().exists()) {
+                continue;
+            }
             try {
                 Files.writeString(path, GSON.toJson(stringGeometryEntry.getValue().getJson()), StandardCharsets.UTF_8);
             } catch (IOException e) {
@@ -129,6 +156,9 @@ public class GeneratorMain {
 
         for (Map.Entry<String, Texture> stringTextureEntry : textureMap.entrySet()) {
             Path path = texturesFolder.toPath().resolve(stringTextureEntry.getKey() + ".png");
+            if (path.toFile().exists()) {
+                continue;
+            }
             try {
                 Files.copy(stringTextureEntry.getValue().getPath(), path, StandardCopyOption.REPLACE_EXISTING);
             } catch (IOException e) {
@@ -139,7 +169,9 @@ public class GeneratorMain {
         for (Map.Entry<String, Entity> stringEntityEntry : entityMap.entrySet()) {
             stringEntityEntry.getValue().modify();
             Path path = entityFolder.toPath().resolve(stringEntityEntry.getKey() + ".entity.json");
-
+            if (path.toFile().exists()) {
+                continue;
+            }
             try {
                 Files.writeString(path, stringEntityEntry.getValue().getJson(), StandardCharsets.UTF_8);
             } catch (IOException e) {

src/main/java/re/imc/geysermodelenginepackgenerator/generator/Entity.java

@@ -5,6 +5,8 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 
+import java.util.Properties;
+
 @Getter
 @Setter
 @AllArgsConstructor
@@ -17,7 +19,7 @@ public class Entity {
                 "description": {
                   "identifier": "modelengine:%entity_id%",
                   "materials": {
-                    "default": "entity_alphatest"
+                    "default": "%material%"
                   },
                   "textures": {
                     "default": "%texture%"
@@ -37,7 +39,7 @@ public class Entity {
                     ]
                   },
                   "render_controllers": [
-                    "controller.render.default"
+                    "%render_controller%"
                   ]
                 }
               }
@@ -48,6 +50,9 @@ public class Entity {
     String modelId;
     String json;
     boolean hasHeadAnimation = false;
+
+    Properties properties = new Properties();
+
     public Entity(String modelId) {
         this.modelId = modelId;
     }
@@ -56,7 +61,11 @@ public class Entity {
         json = TEMPLATE.replace("%entity_id%", modelId)
                 .replace("%geometry%", "geometry.modelengine_" + modelId)
                 .replace("%texture%", "textures/entity/" + modelId)
-                .replace("%look_at_target%", hasHeadAnimation ? "animation." + modelId + ".look_at_target" : "animation.common.look_at_target")
+                .replace("%look_at_target%",  "animation." + modelId + ".look_at_target")
+                .replace("%material%", properties.getProperty("material", "entity_alphatest"))
+                .replace("%render_controller%", properties.getProperty("render_controller", "controller.render.default"))
+
+
         ;
     }