feat: arrow entity handling and damage. (#772)

Arrow Entity handling and damage.

Arrow hitting blocks and damaging entities

Despawn Arrow and clamp velocity properly :)

hand animations 👍

fix bow?

first_collision rewrite. somewhat fixed arrow through floor

---------

Co-authored-by: e1pupper <tebaremahmed@gmail.com>
Co-authored-by: TestingPlant <44930139+TestingPlant@users.noreply.github.com>

Author: 3 people

Cargo.lock

@@ -40,7 +40,6 @@ members = [
     'crates/hyperion-text',
     'crates/hyperion-utils',
     'crates/simd-utils',
-    'crates/spatial',
     'crates/system-order',
     'events/tag',
     'tools/packet-inspector',
@@ -240,9 +239,6 @@ version = '0.10.8'
 [workspace.dependencies.simd-utils]
 path = 'crates/simd-utils'
 
-[workspace.dependencies.spatial]
-path = 'crates/spatial'
-
 [workspace.dependencies.syntect]
 default-features = false
 version = '5.2.0'

Cargo.toml

@@ -279,64 +279,43 @@ impl Aabb {
         }
 
         let dir = ray.direction();
+        let inv_dir = ray.inv_direction();
 
-        // For each axis, handle zero direction:
+        // Initialize t_min and t_max to the range of possible values
         let (mut t_min, mut t_max) = (f32::NEG_INFINITY, f32::INFINITY);
 
         // X-axis
-        if dir.x == 0.0 {
-            // Ray is parallel to X slab
-            if origin.x < self.min.x || origin.x > self.max.x {
-                return None; // no intersection if outside slab
-            }
-            // else: no constraint from X (t_min, t_max remain infinite)
-        } else {
-            let inv_dx = 1.0 / dir.x;
-            let tx1 = (self.min.x - origin.x) * inv_dx;
-            let tx2 = (self.max.x - origin.x) * inv_dx;
-            let t_low = tx1.min(tx2);
-            let t_high = tx1.max(tx2);
-            t_min = t_min.max(t_low);
-            t_max = t_max.min(t_high);
-            if t_min > t_max {
-                return None;
-            }
+        if dir.x != 0.0 {
+            let tx1 = (self.min.x - origin.x) * inv_dir.x;
+            let tx2 = (self.max.x - origin.x) * inv_dir.x;
+            t_min = t_min.max(tx1.min(tx2));
+            t_max = t_max.min(tx1.max(tx2));
+        } else if origin.x < self.min.x || origin.x > self.max.x {
+            return None; // Ray is parallel to X slab and outside the slab
         }
 
-        // Y-axis (do the same zero-check logic)
-        if dir.y == 0.0 {
-            if origin.y < self.min.y || origin.y > self.max.y {
-                return None;
-            }
-        } else {
-            let inv_dy = 1.0 / dir.y;
-            let ty1 = (self.min.y - origin.y) * inv_dy;
-            let ty2 = (self.max.y - origin.y) * inv_dy;
-            let t_low = ty1.min(ty2);
-            let t_high = ty1.max(ty2);
-            t_min = t_min.max(t_low);
-            t_max = t_max.min(t_high);
-            if t_min > t_max {
-                return None;
-            }
+        // Y-axis
+        if dir.y != 0.0 {
+            let ty1 = (self.min.y - origin.y) * inv_dir.y;
+            let ty2 = (self.max.y - origin.y) * inv_dir.y;
+            t_min = t_min.max(ty1.min(ty2));
+            t_max = t_max.min(ty1.max(ty2));
+        } else if origin.y < self.min.y || origin.y > self.max.y {
+            return None; // Ray is parallel to Y slab and outside the slab
         }
 
-        // Z-axis (same pattern)
-        if dir.z == 0.0 {
-            if origin.z < self.min.z || origin.z > self.max.z {
-                return None;
-            }
-        } else {
-            let inv_dz = 1.0 / dir.z;
-            let tz1 = (self.min.z - origin.z) * inv_dz;
-            let tz2 = (self.max.z - origin.z) * inv_dz;
-            let t_low = tz1.min(tz2);
-            let t_high = tz1.max(tz2);
-            t_min = t_min.max(t_low);
-            t_max = t_max.min(t_high);
-            if t_min > t_max {
-                return None;
-            }
+        // Z-axis
+        if dir.z != 0.0 {
+            let tz1 = (self.min.z - origin.z) * inv_dir.z;
+            let tz2 = (self.max.z - origin.z) * inv_dir.z;
+            t_min = t_min.max(tz1.min(tz2));
+            t_max = t_max.min(tz1.max(tz2));
+        } else if origin.z < self.min.z || origin.z > self.max.z {
+            return None; // Ray is parallel to Z slab and outside the slab
+        }
+
+        if t_min > t_max {
+            return None;
         }
 
         // At this point, t_min and t_max define the intersection range.

crates/geometry/src/aabb.rs

@@ -56,110 +56,57 @@ impl Ray {
         self.origin + self.direction * t
     }
 
-    /// Efficiently traverse through grid cells that the ray intersects using an optimized DDA algorithm.
+    /// Efficiently traverse through grid cells that the ray intersects using the Amanatides and Woo algorithm.
     /// Returns an iterator over the grid cells ([`IVec3`]) that the ray passes through.
     pub fn voxel_traversal(&self, bounds_min: IVec3, bounds_max: IVec3) -> VoxelTraversal {
-        // Convert ray origin to grid coordinates and handle negative coordinates correctly
         let current_pos = self.origin.as_ivec3();
 
-        // Ensure that the traversal includes the current block
-        let min_block = IVec3::new(
-            current_pos.x.min(bounds_min.x),
-            current_pos.y.min(bounds_min.y),
-            current_pos.z.min(bounds_min.z),
-        );
-
-        let max_block = IVec3::new(
-            current_pos.x.max(bounds_max.x),
-            current_pos.y.max(bounds_max.y),
-            current_pos.z.max(bounds_max.z),
+        // Determine stepping direction for each axis
+        let step = IVec3::new(
+            if self.direction.x > 0.0 { 1 } else { -1 },
+            if self.direction.y > 0.0 { 1 } else { -1 },
+            if self.direction.z > 0.0 { 1 } else { -1 },
         );
 
-        // Calculate step direction for each axis
-        let step = IVec3::new(
-            if self.direction.x > 0.0 {
-                1
-            } else if self.direction.x < 0.0 {
-                -1
+        // Calculate distance to next voxel boundary for each axis
+        let next_boundary = Vec3::new(
+            if step.x > 0 {
+                current_pos.x as f32 + 1.0 - self.origin.x
             } else {
-                0
+                self.origin.x - current_pos.x as f32
             },
-            if self.direction.y > 0.0 {
-                1
-            } else if self.direction.y < 0.0 {
-                -1
+            if step.y > 0 {
+                current_pos.y as f32 + 1.0 - self.origin.y
             } else {
-                0
+                self.origin.y - current_pos.y as f32
             },
-            if self.direction.z > 0.0 {
-                1
-            } else if self.direction.z < 0.0 {
-                -1
+            if step.z > 0 {
+                current_pos.z as f32 + 1.0 - self.origin.z
             } else {
-                0
+                self.origin.z - current_pos.z as f32
             },
         );
 
-        // Calculate t_max - distance to next voxel boundary for each axis
+        // Calculate t_max and t_delta using precomputed inv_direction
         let t_max = Vec3::new(
-            if self.direction.x == 0.0 {
-                f32::INFINITY
-            } else {
-                let next_x = if self.direction.x > 0.0 {
-                    current_pos.x as f32 + 1.0 - self.origin.x
-                } else {
-                    self.origin.x - current_pos.x as f32
-                };
-                next_x * self.inv_direction.x.abs()
-            },
-            if self.direction.y == 0.0 {
-                f32::INFINITY
-            } else {
-                let next_y = if self.direction.y > 0.0 {
-                    current_pos.y as f32 + 1.0 - self.origin.y
-                } else {
-                    self.origin.y - current_pos.y as f32
-                };
-                next_y * self.inv_direction.y.abs()
-            },
-            if self.direction.z == 0.0 {
-                f32::INFINITY
-            } else {
-                let next_z = if self.direction.z > 0.0 {
-                    current_pos.z as f32 + 1.0 - self.origin.z
-                } else {
-                    self.origin.z - current_pos.z as f32
-                };
-                next_z * self.inv_direction.z.abs()
-            },
+            next_boundary.x * self.inv_direction.x.abs(),
+            next_boundary.y * self.inv_direction.y.abs(),
+            next_boundary.z * self.inv_direction.z.abs(),
         );
 
-        // Calculate t_delta - distance between voxel boundaries
         let t_delta = Vec3::new(
-            if self.direction.x == 0.0 {
-                f32::INFINITY
-            } else {
-                self.inv_direction.x.abs()
-            },
-            if self.direction.y == 0.0 {
-                f32::INFINITY
-            } else {
-                self.inv_direction.y.abs()
-            },
-            if self.direction.z == 0.0 {
-                f32::INFINITY
-            } else {
-                self.inv_direction.z.abs()
-            },
+            self.inv_direction.x.abs(),
+            self.inv_direction.y.abs(),
+            self.inv_direction.z.abs(),
         );
 
         VoxelTraversal {
             current_pos,
             step,
             t_max,
             t_delta,
-            bounds_min: min_block,
-            bounds_max: max_block,
+            bounds_min,
+            bounds_max,
         }
     }
 }

crates/geometry/src/ray.rs

@@ -11,6 +11,7 @@ anyhow = { workspace = true }
 base64 = { workspace = true }
 bitfield-struct = { workspace = true }
 bitvec = { workspace = true }
+bvh-region = { workspace = true }
 bumpalo = { workspace = true }
 bytemuck = { workspace = true }
 byteorder = { workspace = true }
@@ -71,12 +72,13 @@ valence_protocol = { workspace = true }
 valence_registry = { workspace = true }
 valence_server = { workspace = true }
 valence_text = { workspace = true }
+ordered-float = { workspace = true }
 
 [dev-dependencies]
 approx = { workspace = true }
 divan = { workspace = true }
 fastrand = { workspace = true }
-spatial = { workspace = true }
+hyperion-genmap = { workspace = true }
 
 [lints]
 workspace = true