From 877f922145f7108cfaa4679dd69d351804831010 Mon Sep 17 00:00:00 2001
From: Alexsandro Percy <alexsandro.percy@gmail.com>
Date: Thu, 3 Aug 2023 20:16:57 -0300
Subject: [PATCH] fixed flap animation for negative angles

---
 lib_planes/utilities.lua | 42 ++++++++++++++++++++++++++++++----------
 1 file changed, 32 insertions(+), 10 deletions(-)

diff --git a/lib_planes/utilities.lua b/lib_planes/utilities.lua
index 3621e86..f124636 100644
--- a/lib_planes/utilities.lua
+++ b/lib_planes/utilities.lua
@@ -803,11 +803,22 @@ function airutils.flap_on(self)
     local flap_limit = 15
     if self._flap_limit then flap_limit = self._flap_limit end
     self._wing_configuration = self._wing_angle_of_attack + self._wing_angle_extra_flaps
-    for i = 0,flap_limit do
-        minetest.after(0.05*i, function()
-            self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
-            self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
-        end)
+    if flap_limit >= 0 then
+        for i = 0,flap_limit do
+            minetest.after(0.02*i, function()
+                self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
+                self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
+            end)
+        end
+    else
+        for i = flap_limit,0 do
+            minetest.after(0.02*-i, function()
+                self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
+                self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-i, y=0, z=0})
+            end)
+        end
+        --self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-flap_limit, y=0, z=0})
+        --self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-flap_limit, y=0, z=0})
     end
 end
 
@@ -815,11 +826,22 @@ function airutils.flap_off(self)
     self._wing_configuration = self._wing_angle_of_attack
     local flap_limit = 15
     if self._flap_limit then flap_limit = self._flap_limit end
-    for i = 0,flap_limit do
-        minetest.after(0.05*i, function()
-            self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
-            self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
-        end)
+    if flap_limit >= 0 then
+        for i = 0,flap_limit do
+            minetest.after(0.01*i, function()
+                self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
+                self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
+            end)
+        end
+    else
+        for i = flap_limit,0 do
+            minetest.after(0.01*-i, function()
+                self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
+                self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=-flap_limit+i, y=0, z=0})
+            end)
+        end
+        --self.object:set_bone_position("flap.l", {x=0, y=0, z=0}, {x=0, y=0, z=0})
+        --self.object:set_bone_position("flap.r", {x=0, y=0, z=0}, {x=0, y=0, z=0})
     end
 end