use project root dir, should fix files being all over the place

src/main/java/net/fabricmc/loom/AbstractPlugin.java

@@ -25,9 +25,9 @@
 package net.fabricmc.loom;
 
 import com.google.common.collect.ImmutableMap;
+import net.fabricmc.loom.providers.MappingsProvider;
 import net.fabricmc.loom.providers.MinecraftProvider;
 import net.fabricmc.loom.providers.ModRemapperProvider;
-import net.fabricmc.loom.providers.MappingsProvider;
 import net.fabricmc.loom.task.RemapJar;
 import net.fabricmc.loom.util.Constants;
 import net.fabricmc.loom.util.LoomDependencyManager;
@@ -189,7 +189,7 @@ public class AbstractPlugin implements Plugin<Project> {
 			});
 
 			project1.getRepositories().flatDir(flatDirectoryArtifactRepository -> {
-				flatDirectoryArtifactRepository.dir(Constants.CACHE_FILES);
+				flatDirectoryArtifactRepository.dir(extension.getProjectCache());
 				flatDirectoryArtifactRepository.setName("UserLocalCacheFiles");
 			});
 

src/main/java/net/fabricmc/loom/LoomGradleExtension.java

@@ -53,6 +53,14 @@ public class LoomGradleExtension {
 		return userCache;
 	}
 
+	public File getProjectCache(){
+		File projectCache = new File(project.getRootDir(), ".gradle/minecraft/");
+		if(!projectCache.exists()){
+			projectCache.mkdirs();
+		}
+		return projectCache;
+	}
+
 	public LoomDependencyManager getDependencyManager() {
 		return dependencyManager;
 	}

src/main/java/net/fabricmc/loom/providers/MappingsProvider.java

@@ -106,7 +106,7 @@ public class MappingsProvider extends DependencyProvider {
 
 		MAPPINGS_TINY_BASE = new File(MAPPINGS_DIR, mappingsName + "-tiny-" + minecraftVersion + "." + mappingsVersion + "-base");
 		MAPPINGS_TINY = new File(MAPPINGS_DIR, mappingsName + "-tiny-" + minecraftVersion + "." + mappingsVersion);
-		MAPPINGS_MIXIN_EXPORT = new File(Constants.CACHE_FILES, "mixin-map-" + minecraftVersion + "." + mappingsVersion + ".tiny");
+		MAPPINGS_MIXIN_EXPORT = new File(extension.getProjectCache(), "mixin-map-" + minecraftVersion + "." + mappingsVersion + ".tiny");
 	}
 
 	@Override

src/main/java/net/fabricmc/loom/providers/ModRemapperProvider.java

@@ -42,7 +42,8 @@ public class ModRemapperProvider extends DependencyProvider {
 		MappingsProvider mappingsProvider = getDependencyManager().getProvider(MappingsProvider.class);
 
 		String outputName = input.getName().substring(0, input.getName().length() - 4) + "-mapped-" + mappingsProvider.mappingsVersion + ".jar";//TODO use the hash of the input file or something?
-		File output = new File(Constants.REMAPPED_MODS_STORE, outputName);
+		File modStore = new File(extension.getProjectCache(), "remapped_mods");
+		File output = new File(modStore, outputName);
 		if(output.exists()){
 			output.delete();
 		}

src/main/java/net/fabricmc/loom/task/GenIdeaProjectTask.java

@@ -24,9 +24,7 @@
 
 package net.fabricmc.loom.task;
 
-
 import net.fabricmc.loom.LoomGradleExtension;
-import net.fabricmc.loom.util.Constants;
 import net.fabricmc.loom.util.IdeaRunConfig;
 import org.gradle.api.DefaultTask;
 import org.gradle.api.Project;
@@ -86,7 +84,7 @@ public class GenIdeaProjectTask extends DefaultTask {
 		transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
 		transformer.transform(source, result);
 
-		File runDir = new File(Constants.WORKING_DIRECTORY, extension.runDir);
+		File runDir = new File(getProject().getRootDir(), extension.runDir);
 		if (!runDir.exists()) {
 			runDir.mkdirs();
 		}

src/main/java/net/fabricmc/loom/task/GenVsCodeProjectTask.java

@@ -27,7 +27,6 @@ package net.fabricmc.loom.task;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import net.fabricmc.loom.LoomGradleExtension;
-import net.fabricmc.loom.util.Constants;
 import net.fabricmc.loom.util.IdeaRunConfig;
 import org.apache.commons.io.FileUtils;
 import org.gradle.api.DefaultTask;
@@ -70,7 +69,7 @@ public class GenVsCodeProjectTask extends DefaultTask {
             throw new RuntimeException("Failed to write launch.json", e);
         }
 
-        File runDir = new File(Constants.WORKING_DIRECTORY, extension.runDir);
+        File runDir = new File(getProject().getRootDir(), extension.runDir);
         if (!runDir.exists()) {
             runDir.mkdirs();
         }

src/main/java/net/fabricmc/loom/util/Constants.java

@@ -24,13 +24,8 @@
 
 package net.fabricmc.loom.util;
 
-import java.io.File;
 
 public class Constants {
-	public static final File WORKING_DIRECTORY = new File(".");
-	public static final File CACHE_FILES = new File(WORKING_DIRECTORY, ".gradle/minecraft");
-
-	public static final File REMAPPED_MODS_STORE = new File(CACHE_FILES, "remapped_mods");
 
 	public static final String FABRIC_CLIENT_TWEAKER = "net.fabricmc.loader.launch.FabricClientTweaker";
 	public static final String FABRIC_SERVER_TWEAKER = "net.fabricmc.loader.launch.FabricServerTweaker";

src/main/java/net/fabricmc/loom/util/SetupIntelijRunConfigs.java

@@ -47,7 +47,7 @@ public class SetupIntelijRunConfigs {
 			throw new RuntimeException("Failed to generate run configs", e);
 		}
 
-		File runDir = new File(Constants.WORKING_DIRECTORY, extension.runDir);
+		File runDir = new File(project.getRootDir(), extension.runDir);
 		if (!runDir.exists()) {
 			runDir.mkdirs();
 		}