1 files changed, 40 insertions, 2 deletions
diff --git a/src/launcher/settings.rs b/src/launcher/settings.rs
index 5a96589..29d9220 100644
--- a/src/launcher/settings.rs
+++ b/src/launcher/settings.rs
@@ -1,5 +1,6 @@
 use std::collections::HashMap;
 use std::error::Error;
+use std::ffi::{OsStr, OsString};
 use std::fmt::{Display, Formatter};
 use std::io::ErrorKind;
 use std::path::{Path, PathBuf};
@@ -140,11 +141,28 @@ pub enum ProfileVersion {
     Specific(String)
 }
 
+#[derive(Deserialize, Serialize, Debug, Clone, Copy)]
+pub struct Resolution {
+    width: u32,
+    height: u32
+}
+
+impl Default for Resolution {
+    fn default() -> Self {
+        Resolution { width: 864, height: 480 }
+    }
+}
+
 #[derive(Deserialize, Serialize, Debug, Clone)]
 pub struct Profile {
     game_version: ProfileVersion,
     java_runtime: Option<String>,
-    instance: String // ugly that this is a string instead of reference to an Instance but whatever I'm lazy
+    instance: String, // ugly that this is a string instead of reference to an Instance but whatever I'm lazy
+
+    #[serde(default)]
+    jvm_arguments: Vec<OsString>,
+
+    resolution: Option<Resolution>
 }
 
 impl<P: AsRef<Path>> From<P> for Instance {
@@ -165,12 +183,24 @@ impl Instance {
     }
 }
 
+const DEF_JVM_ARGUMENTS: [&'static str; 7] = [
+    "-Xmx2G",
+    "-XX:+UnlockExperimentalVMOptions",
+    "-XX:+UseG1GC",
+    "-XX:G1NewSizePercent=20",
+    "-XX:G1ReservePercent=20",
+    "-XX:MaxGCPauseMillis=50",
+    "-XX:G1HeapRegionSize=32M"
+];
+
 impl Profile {
     fn new(instance_name: &str) -> Self {
         Self {
             game_version: ProfileVersion::LatestRelease,
             java_runtime: None,
-            instance: instance_name.into()
+            instance: instance_name.into(),
+            jvm_arguments: DEF_JVM_ARGUMENTS.iter().map(OsString::from).collect(),
+            resolution: None
         }
     }
 
@@ -181,4 +211,12 @@ impl Profile {
     pub fn get_instance_name(&self) -> &str {
         &self.instance
     }
+
+    pub fn iter_arguments(&self) -> impl Iterator<Item = &OsString> {
+        self.jvm_arguments.iter()
+    }
+
+    pub fn get_resolution(&self) -> Option<Resolution> {
+        self.resolution
+    }
 }