From fefbc6f629dacd8cb8cab7e6d244d38e12cbb183 Mon Sep 17 00:00:00 2001
From: Able <abl3theabove@gmail.com>
Date: Sat, 26 Mar 2022 01:28:01 -0500
Subject: [PATCH] Hex Coordinates

---
 src/coordinates.rs | 121 +++++++++++++++++++++++++++++++++++++++++++++
 src/main.rs        |  24 ++++++---
 src/voxel.rs       |   8 ---
 3 files changed, 139 insertions(+), 14 deletions(-)
 create mode 100644 src/coordinates.rs

diff --git a/src/coordinates.rs b/src/coordinates.rs
new file mode 100644
index 0000000..93c0ff4
--- /dev/null
+++ b/src/coordinates.rs
@@ -0,0 +1,121 @@
+#![allow(non_snake_case)]
+#![allow(non_upper_case_globals)]
+#![allow(unused_mut)]
+
+#[derive(Debug, Copy, Clone)]
+pub struct Hex {
+    pub s: f64,
+    pub r: f64,
+    pub q: f64,
+    pub y: f64,
+}
+
+pub enum HexDirection {
+    SPos,
+    SNeg,
+    RPos,
+    RNeg,
+    QPos,
+    QNeg,
+    YPos,
+    YNeg,
+}
+
+impl Hex {
+    pub fn distance_to(&self, other: Hex) -> f64 {
+        let ret = *self - other;
+        ret.length()
+    }
+    pub fn length(&self) -> f64 {
+        self.q.abs() + self.r.abs() + self.s.abs() / 2.0
+    }
+
+    pub fn round(mut self) -> Hex {
+        let q = self.q.round();
+        let r = self.r.round();
+        let s = self.s.round();
+        let y = self.y.round();
+        Hex { q, r, s, y }
+    }
+    pub fn scale(self, k: f64) -> Hex {
+        Hex {
+            q: self.q * k,
+            r: self.r * k,
+            s: self.s * k,
+            y: self.y * k,
+        }
+    }
+
+    pub fn rotate_left(&mut self) {
+        self.s = -self.s;
+        self.q = -self.q;
+        self.r = -self.r;
+    }
+    pub fn rotate_right(&mut self) {
+        self.s = -self.s;
+        self.q = -self.q;
+        self.r = -self.r;
+    }
+    pub fn lerp(&self, other: Hex, time: f64) -> Hex {
+        return Hex {
+            q: self.q * (1.0 - time) + other.q * time,
+            r: self.r * (1.0 - time) + other.r * time,
+            s: self.s * (1.0 - time) + other.s * time,
+            y: self.y * (1.0 - time) + other.y * time,
+        };
+    }
+}
+
+impl Add for Hex {
+    type Output = Self;
+
+    fn add(self, other: Self) -> Self {
+        Self {
+            s: self.s + other.s,
+            r: self.r + other.r,
+            q: self.q + other.q,
+            y: self.y + other.y,
+        }
+    }
+}
+
+impl Sub for Hex {
+    type Output = Self;
+
+    fn sub(self, other: Self) -> Self {
+        Self {
+            s: self.s - other.s,
+            r: self.r - other.r,
+            q: self.q - other.q,
+            y: self.y - other.y,
+        }
+    }
+}
+
+impl Div for Hex {
+    type Output = Self;
+
+    fn div(self, other: Self) -> Self {
+        Self {
+            s: self.s / other.s,
+            r: self.r / other.r,
+            q: self.q / other.q,
+            y: self.y / other.y,
+        }
+    }
+}
+
+impl Mul for Hex {
+    type Output = Self;
+
+    fn mul(self, other: Self) -> Self {
+        Self {
+            s: self.s * other.s,
+            r: self.r * other.r,
+            q: self.q * other.q,
+            y: self.y * other.y,
+        }
+    }
+}
+
+use std::ops::{Add, Div, Mul, Sub};
diff --git a/src/main.rs b/src/main.rs
index fa2ab06..40ac648 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,8 @@
 pub mod chunk;
+pub mod coordinates;
 pub mod platform;
 pub mod voxel;
 
-pub struct Position3D {
-    pub x: f64,
-    pub y: f64,
-    pub z: f64,
-}
-
 use bgfx::*;
 use bgfx_rs::bgfx;
 use glfw::{Action, Key, Window};
@@ -17,6 +12,23 @@ const WIDTH: usize = 1280;
 const HEIGHT: usize = 720;
 
 fn main() {
+    let hex_coord_1 = coordinates::Hex {
+        q: 0.0,
+        r: 0.0,
+        s: 0.0,
+        y: 0.0,
+    };
+
+    let hex_coord_2 = coordinates::Hex {
+        q: 1.0,
+        r: 1.0,
+        s: 1.1,
+        y: 0.0,
+    };
+    hex_coord_2.round();
+
+    println!("{}", hex_coord_1.distance_to(hex_coord_2));
+
     let mut glfw = glfw::init(glfw::FAIL_ON_ERRORS).unwrap();
     glfw.window_hint(glfw::WindowHint::ClientApi(glfw::ClientApiHint::NoApi));
 
diff --git a/src/voxel.rs b/src/voxel.rs
index cce7fea..a3fe994 100644
--- a/src/voxel.rs
+++ b/src/voxel.rs
@@ -1,11 +1,3 @@
-use crate::{chunk::Chunk, Position3D};
-
 pub struct VoxelData {
     pub id: u32,
 }
-
-pub struct VoxelGrid {
-    pub name: String,
-    pub position: Position3D,
-    pub chunks: Vec<Chunk>,
-}