Hot asset reloading

Cargo.toml

@@ -111,6 +111,14 @@ path = "examples/app/headless.rs"
 name = "plugin"
 path = "examples/app/plugin.rs"
 
+[[example]]
+name = "hot_asset_reload"
+path = "examples/asset/hot_asset_reload.rs"
+
+[[example]]
+name = "asset_loading"
+path = "examples/asset/asset_loading.rs"
+
 [[example]]
 name = "custom_diagnostic"
 path = "examples/diagnostics/custom_diagnostic.rs"

assets/models/cube/cube.gltf

@@ -0,0 +1,122 @@
+{
+ "asset" : {
+ "generator" : "Khronos glTF Blender I/O v1.1.46",
+ "version" : "2.0"
+ },
+ "scene" : 0,
+ "scenes" : [
+ {
+ "name" : "Scene",
+ "nodes" : [
+ 0
+ ]
+ }
+ ],
+ "nodes" : [
+ {
+ "mesh" : 0,
+ "name" : "Cube"
+ }
+ ],
+ "materials" : [
+ {
+ "doubleSided" : true,
+ "emissiveFactor" : [
+ 0,
+ 0,
+ 0
+ ],
+ "name" : "Material",
+ "pbrMetallicRoughness" : {
+ "baseColorFactor" : [
+ 0.800000011920929,
+ 0.800000011920929,
+ 0.800000011920929,
+ 1
+ ],
+ "metallicFactor" : 0,
+ "roughnessFactor" : 0.4000000059604645
+ }
+ }
+ ],
+ "meshes" : [
+ {
+ "name" : "Cube",
+ "primitives" : [
+ {
+ "attributes" : {
+ "POSITION" : 0,
+ "NORMAL" : 1,
+ "TEXCOORD_0" : 2
+ },
+ "indices" : 3,
+ "material" : 0
+ }
+ ]
+ }
+ ],
+ "accessors" : [
+ {
+ "bufferView" : 0,
+ "componentType" : 5126,
+ "count" : 24,
+ "max" : [
+ 1,
+ 1,
+ 1
+ ],
+ "min" : [
+ -1,
+ -1,
+ -1
+ ],
+ "type" : "VEC3"
+ },
+ {
+ "bufferView" : 1,
+ "componentType" : 5126,
+ "count" : 24,
+ "type" : "VEC3"
+ },
+ {
+ "bufferView" : 2,
+ "componentType" : 5126,
+ "count" : 24,
+ "type" : "VEC2"
+ },
+ {
+ "bufferView" : 3,
+ "componentType" : 5123,
+ "count" : 36,
+ "type" : "SCALAR"
+ }
+ ],
+ "bufferViews" : [
+ {
+ "buffer" : 0,
+ "byteLength" : 288,
+ "byteOffset" : 0
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 288,
+ "byteOffset" : 288
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 192,
+ "byteOffset" : 576
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 72,
+ "byteOffset" : 768
+ }
+ ],
+ "buffers" : [
+ {
+ "byteLength" : 840,
+ "uri" : "cube.bin"
+ }
+ ]
+}

assets/models/sphere/sphere.gltf

@@ -0,0 +1,100 @@
+{
+ "asset" : {
+ "generator" : "Khronos glTF Blender I/O v1.1.46",
+ "version" : "2.0"
+ },
+ "scene" : 0,
+ "scenes" : [
+ {
+ "name" : "Scene",
+ "nodes" : [
+ 0
+ ]
+ }
+ ],
+ "nodes" : [
+ {
+ "mesh" : 0,
+ "name" : "Sphere"
+ }
+ ],
+ "meshes" : [
+ {
+ "name" : "Sphere",
+ "primitives" : [
+ {
+ "attributes" : {
+ "POSITION" : 0,
+ "NORMAL" : 1,
+ "TEXCOORD_0" : 2
+ },
+ "indices" : 3
+ }
+ ]
+ }
+ ],
+ "accessors" : [
+ {
+ "bufferView" : 0,
+ "componentType" : 5126,
+ "count" : 2143,
+ "max" : [
+ 1.0000005960464478,
+ 1,
+ 1.000001072883606
+ ],
+ "min" : [
+ -1.000000238418579,
+ -1,
+ -1
+ ],
+ "type" : "VEC3"
+ },
+ {
+ "bufferView" : 1,
+ "componentType" : 5126,
+ "count" : 2143,
+ "type" : "VEC3"
+ },
+ {
+ "bufferView" : 2,
+ "componentType" : 5126,
+ "count" : 2143,
+ "type" : "VEC2"
+ },
+ {
+ "bufferView" : 3,
+ "componentType" : 5123,
+ "count" : 11904,
+ "type" : "SCALAR"
+ }
+ ],
+ "bufferViews" : [
+ {
+ "buffer" : 0,
+ "byteLength" : 25716,
+ "byteOffset" : 0
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 25716,
+ "byteOffset" : 25716
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 17144,
+ "byteOffset" : 51432
+ },
+ {
+ "buffer" : 0,
+ "byteLength" : 23808,
+ "byteOffset" : 68576
+ }
+ ],
+ "buffers" : [
+ {
+ "byteLength" : 92384,
+ "uri" : "sphere.bin"
+ }
+ ]
+}

crates/bevy_asset/Cargo.toml

@@ -4,6 +4,10 @@ version = "0.1.0"
 authors = ["Carter Anderson <mcanders1@gmail.com>"]
 edition = "2018"
 
+[features]
+default = ["filesystem_watcher"]
+filesystem_watcher = ["notify"]
+
 [dependencies]
 bevy_app = { path = "../bevy_app" }
 bevy_core = { path = "../bevy_core" }
@@ -12,4 +16,5 @@ legion = { path = "../bevy_legion" }
 uuid = { version = "0.8", features = ["v4", "serde"] }
 crossbeam-channel = "0.4.2"
 anyhow = "1.0"
-thiserror = "1.0"
+thiserror = "1.0"
+notify = { version = "5.0.0-pre.2", optional = true }