Move assets dir to root, fix debug not finding assets

.cargo/config.toml

@@ -0,0 +1,3 @@
+[env]
+# Makes Bevy look for the assets/ directory in the right place.
+BEVY_ASSET_ROOT = { value = ".", relative = true }

.vscode/launch.json

@@ -1,27 +1,29 @@
 {
-	"version": "0.2.0",
-	"configurations": [
-		{
-			"type": "lldb",
-			"request": "launch",
-			"name": "Debug client",
-			"cargo": {
-				"args": [ "build", "--bin=gaemstone-client", "--package=gaemstone-client" ],
-				"filter": { "name": "gaemstone-client", "kind": "bin" },
-			},
-			"cwd": "${workspaceFolder}",
-			"args": [],
-		},
-		{
-			"type": "lldb",
-			"request": "launch",
-			"name": "Debug server",
-			"cargo": {
-				"args": [ "build", "--bin=gaemstone-server", "--package=gaemstone-server" ],
-				"filter": { "name": "gaemstone-server", "kind": "bin" },
-			},
-			"cwd": "${workspaceFolder}",
-			"args": [],
-		}
-	]
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug client",
+            "cargo": {
+                "args": [ "build", "--bin=gaemstone-client", "--package=gaemstone-client" ],
+                "filter": { "name": "gaemstone-client", "kind": "bin" },
+            },
+            // When Bevy looks for assets, it checks BEVY_ASSET_ROOT, CARGO_MANIFEST_DIR, and
+            // then falls back to the executable directory. When debugging, the cargo manifest
+            // directory is not set, so we need to specify this environment variable.
+            "env": { "BEVY_ASSET_ROOT": "${workspaceFolder}" },
+            "args": [],
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug server",
+            "cargo": {
+                "args": [ "build", "--bin=gaemstone-server", "--package=gaemstone-server" ],
+                "filter": { "name": "gaemstone-server", "kind": "bin" },
+            },
+            "args": [],
+        }
+    ]
 }