diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7f0c569
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,22 @@
+# macOS
+.DS_Store
+
+# Xcode user-specific data
+xcuserdata/
+*.xcuserstate
+*.xcscmblueprint
+*.xccheckout
+
+# Build output
+build/
+DerivedData/
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# Swift Package Manager
+.build/
+.swiftpm/
+
+# Reality Composer Pro user data
+*.rcuserdata
diff --git a/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
deleted file mode 100644
index 09c9372..0000000
--- a/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Bucket
-   uuid = "49F4A6D3-C1CC-44A3-AC2F-F7F6C434BF73"
-   type = "1"
-   version = "2.0">
-   <Breakpoints>
-      <BreakpointProxy
-         BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
-         <BreakpointContent
-            uuid = "74309E53-14CD-4936-BF18-C77CB66EA2E1"
-            shouldBeEnabled = "Yes"
-            ignoreCount = "0"
-            continueAfterRunningActions = "No"
-            filePath = "GasTankAR/ContentView.swift"
-            startingColumnNumber = "9223372036854775807"
-            endingColumnNumber = "9223372036854775807"
-            startingLineNumber = "21"
-            endingLineNumber = "21"
-            landmarkName = "unknown"
-            landmarkType = "0">
-         </BreakpointContent>
-      </BreakpointProxy>
-   </Breakpoints>
-</Bucket>
diff --git a/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcschemes/xcschememanagement.plist b/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index db1407e..0000000
--- a/GasTankAR.xcodeproj/xcuserdata/dennis.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>GasTankAR.xcscheme_^#shared#^_</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>0</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>
diff --git a/drachengas_tanks_usdz/Untitled/Package.realitycomposerpro/WorkspaceData/dennis.rcuserdata b/drachengas_tanks_usdz/Untitled/Package.realitycomposerpro/WorkspaceData/dennis.rcuserdata
deleted file mode 100644
index 50094f8..0000000
--- a/drachengas_tanks_usdz/Untitled/Package.realitycomposerpro/WorkspaceData/dennis.rcuserdata
+++ /dev/null
@@ -1,236 +0,0 @@
-{
-  "advancedEditorSelectedIdentifier" : "ProjectBrowser",
-  "openSceneRelativePaths" : [
-    "Scene.usda"
-  ],
-  "recentIdentifiers" : {
-
-  },
-  "sceneCameraHistory" : {
-    "1DEDB0B0-1F79-405C-9A35-ED4EC1C658C3" : [
-      {
-        "date" : 811100635.690705,
-        "title" : "Untitled",
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-          1.0034403e-08,
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-          0.3467775,
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-          0,
-          2.352992,
-          0.96073854,
-          2.5279448,
-          1
-        ]
-      },
-      {
-        "date" : 810850313.275216,
-        "title" : "Untitled",
-        "transform" : [
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-      {
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-          3.384911,
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-      {
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-        "title" : "Untitled",
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-          3.3419511,
-          1
-        ]
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-      {
-        "date" : 810850191.194057,
-        "title" : "Untitled",
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-      {
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-      {
-        "date" : 810849982.637009,
-        "title" : "Untitled",
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-          -0.036651053,
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-      {
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-      {
-        "date" : 810849977.446143,
-        "title" : "Untitled",
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-      },
-      {
-        "date" : 810849956.454318,
-        "title" : "Untitled",
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-  },
-  "sceneViewportBackgroundColors" : {
-
-  }
-}
\ No newline at end of file