From d7c93e4a95f91cc9c08bc7da904bd86f30a63471 Mon Sep 17 00:00:00 2001
From: Nick Fisher <nick.fisher@avinium.com>
Date: Sun, 26 Feb 2023 12:21:36 +0800
Subject: [PATCH] add setAnimationFrame

---
 ios/Classes/SwiftPolyvoxFilamentPlugin.swift             | 8 +++++++-
 ios/include/PolyvoxFilamentApi.h                         | 1 +
 ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h | 2 --
 ios/src/PolyvoxFilamentApi.cpp                           | 4 ++++
 ios/src/SceneAsset.cpp                                   | 6 ++++++
 lib/filament_controller.dart                             | 8 ++++++++
 6 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/ios/Classes/SwiftPolyvoxFilamentPlugin.swift b/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
index fa6798e7..50da4bd3 100644
--- a/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
+++ b/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
@@ -77,7 +77,6 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
       
       if found != nil {
         path = found?.path
-        print("FOUND \(found)")
       } else {
         if(uriString.hasPrefix("file://")) {
           path = String(uriString.dropFirst(7))
@@ -357,6 +356,13 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
           let reverse = args[3] as! Bool;
           play_animation(assetPtr, animationIndex, loop, reverse)
           result("OK");
+        case "setAnimationFrame":
+          let args = call.arguments as! Array<Any?>
+          let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
+          let animationIndex = args[1] as! Int32;
+          let animationFrame = args[2] as! Int32;
+          set_animation_frame(assetPtr, animationIndex, animationFrame)
+          result("OK");
         case "stopAnimation":
           let args = call.arguments as! Array<Any?>
           let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
diff --git a/ios/include/PolyvoxFilamentApi.h b/ios/include/PolyvoxFilamentApi.h
index 80cc80e9..d5c0353c 100644
--- a/ios/include/PolyvoxFilamentApi.h
+++ b/ios/include/PolyvoxFilamentApi.h
@@ -78,6 +78,7 @@ void set_animation(
 // );
     
 void play_animation(void* asset, int index, bool loop, bool reverse);
+void set_animation_frame(void* asset, int animationIndex, int animationFrame);
 void stop_animation(void* asset, int index);
 
 int get_animation_count(void* asset);
diff --git a/ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h b/ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h
index aa250e53..2541539a 100644
--- a/ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h
+++ b/ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h
@@ -1,8 +1,6 @@
 #ifndef SwiftPolyvoxFilamentPlugin_Bridging_Header_h
 #define SwiftPolyvoxFilamentPlugin_Bridging_Header_h
 
-// void* filament_viewer_new_ios(void* texture, void* loadResource, void* freeResource, void* resources);
-
 #import "PolyvoxFilamentIOSApi.h"
 #import "PolyvoxFilamentApi.h"
 
diff --git a/ios/src/PolyvoxFilamentApi.cpp b/ios/src/PolyvoxFilamentApi.cpp
index 314f3c6a..95d68d39 100644
--- a/ios/src/PolyvoxFilamentApi.cpp
+++ b/ios/src/PolyvoxFilamentApi.cpp
@@ -196,6 +196,10 @@ extern "C" {
     ((SceneAsset*)asset)->playAnimation(index, loop, reverse);
   }
 
+  void set_animation_frame(void* asset, int animationIndex, int animationFrame) {
+    ((SceneAsset*)asset)->setAnimationFrame(animationIndex, animationFrame);
+  }
+
   int get_animation_count(void* asset) {
     auto names = ((SceneAsset*)asset)->getAnimationNames();
     return names->size();
diff --git a/ios/src/SceneAsset.cpp b/ios/src/SceneAsset.cpp
index 9e124a5b..ca9c9186 100644
--- a/ios/src/SceneAsset.cpp
+++ b/ios/src/SceneAsset.cpp
@@ -327,6 +327,12 @@ void SceneAsset::setTexture() {
 
 }
 
+void SceneAsset::setAnimationFrame(int animationIndex, int animationFrame) {
+  auto offset = 60 * animationFrame * 1000; // TODO - don't hardcore 60fps framerate
+  _animator->applyAnimation(animationIndex, offset);
+  _animator->updateBoneMatrices();
+}
+
 void SceneAsset::updateEmbeddedAnimations() {
   auto now = high_resolution_clock::now();
   int animationIndex = 0;
diff --git a/lib/filament_controller.dart b/lib/filament_controller.dart
index d1c834c9..57013760 100644
--- a/lib/filament_controller.dart
+++ b/lib/filament_controller.dart
@@ -70,6 +70,8 @@ abstract class FilamentController {
   Future<List<String>> getAnimationNames(FilamentAsset asset);
   Future removeAsset(FilamentAsset asset);
   Future clearAssets();
+  Future setAnimationFrame(
+      FilamentAsset asset, int animationIndex, int animationFrame);
   Future playAnimation(FilamentAsset asset, int index,
       {bool loop = false, bool reverse = false});
   Future playAnimations(FilamentAsset asset, List<int> indices,
@@ -332,6 +334,12 @@ class PolyvoxFilamentController extends FilamentController {
     await _channel.invokeMethod("playAnimation", [asset, index, loop, reverse]);
   }
 
+  Future setAnimationFrame(
+      FilamentAsset asset, int index, int animationFrame) async {
+    await _channel
+        .invokeMethod("setAnimationFrame", [asset, index, animationFrame]);
+  }
+
   Future playAnimations(FilamentAsset asset, List<int> indices,
       {bool loop = false, bool reverse = false}) async {
     return Future.wait(indices.map((index) {