fix tiles not being unclaimed after multiple marble creations block each other

src/config.rs

@@ -0,0 +1,26 @@
+use std::collections::HashMap;
+
+use raylib::ffi::KeyboardKey;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Default, Deserialize, Serialize)]
+pub struct Config {
+	hotkeys: Hotkeys,
+}
+
+#[derive(Debug, Default, Deserialize, Serialize)]
+pub struct Hotkeys {
+	map: HashMap<String, Hotkey>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct Hotkey {
+	modifiers: Vec<u32>,
+	trigger: Trigger,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub enum Trigger {
+	Mouse(u32),
+	Key(u32),
+}

src/marble_engine.rs

@@ -255,13 +255,17 @@ impl Machine {
 		}
 
 		// #### new marbles ####
+		let mut claim_positions = Vec::new();
 		// prepare creating the new marbles
 		for &(pos, _val, _dir) in &new_marbles {
 			let Some(Tile::Open(OpenTile::Blank, claim)) = self.board.get_mut(pos) else {
 				unreachable!()
 			};
 			*claim = match claim {
-				Claim::Free => Claim::Claimed,
+				Claim::Free => {
+					claim_positions.push(pos);
+					Claim::Claimed
+				}
 				Claim::Claimed | Claim::Blocked => Claim::Blocked,
 				_ => unreachable!(),
 			}
@@ -277,7 +281,6 @@ impl Machine {
 		}
 
 		// #### movement ####
-		let mut claim_positions = Vec::new();
 		// mark claims to figure out what spaces can be moved to
 		for &pos in &self.marbles[..old_marbles] {
 			let Some(Tile::Marble { value: _, dir }) = self.board.get(pos) else {