fix container_set_content, player_position, and recipe_book_remove packets

2 files changed, 27 insertions, 0 deletions

diff --git a/azalea-core/src/math.rs b/azalea-core/src/math.rs
index 7c0ac7b4..62215749 100644
--- a/azalea-core/src/math.rs
+++ b/azalea-core/src/math.rs
@@ -68,6 +68,15 @@ pub fn fract(x: f64) -> f64 {
     x - floor
 }
 
+// these are copied from the java standard library, we don't calculate the
+// consts ourself to make sure it's the same as java
+pub fn to_radians(degrees: f64) -> f64 {
+    degrees * 0.017453292519943295
+}
+pub fn to_degrees(radians: f64) -> f64 {
+    radians * 57.29577951308232
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
diff --git a/azalea-core/src/position.rs b/azalea-core/src/position.rs
index 5948203f..9b800e28 100755
--- a/azalea-core/src/position.rs
+++ b/azalea-core/src/position.rs
@@ -13,6 +13,7 @@ use std::{
 
 use azalea_buf::{AzBuf, AzaleaRead, AzaleaWrite, BufReadError};
 
+use crate::math;
 use crate::resource_location::ResourceLocation;
 
 macro_rules! vec3_impl {
@@ -233,6 +234,23 @@ impl Vec3 {
     pub fn distance_to(&self, other: &Self) -> f64 {
         (self - other).length()
     }
+
+    pub fn x_rot(self, radians: f32) -> Vec3 {
+        let x_delta = math::cos(radians);
+        let y_delta = math::sin(radians);
+        let x = self.x;
+        let y = self.y * (x_delta as f64) + self.z * (y_delta as f64);
+        let z = self.z * (x_delta as f64) - self.y * (y_delta as f64);
+        Vec3 { x, y, z }
+    }
+    pub fn y_rot(self, radians: f32) -> Vec3 {
+        let x_delta = math::cos(radians);
+        let y_delta = math::sin(radians);
+        let x = self.x * (x_delta as f64) + self.z * (y_delta as f64);
+        let y = self.y;
+        let z = self.z * (x_delta as f64) - self.x * (y_delta as f64);
+        Vec3 { x, y, z }
+    }
 }
 
 /// The coordinates of a block in the world. For entities (if the coordinate