From 8e2bc5d35d038ce6a1d114111bf52c14674efe02 Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Sat, 20 May 2023 02:48:17 +0200
Subject: [PATCH] add centered cube

---
 kubi/src/rendering/entities.rs        |  7 ++--
 kubi/src/rendering/primitives/cube.rs | 49 +++++++++++++++++++++------
 2 files changed, 42 insertions(+), 14 deletions(-)

diff --git a/kubi/src/rendering/entities.rs b/kubi/src/rendering/entities.rs
index 94075a6..0135edf 100644
--- a/kubi/src/rendering/entities.rs
+++ b/kubi/src/rendering/entities.rs
@@ -4,18 +4,17 @@ use kubi_shared::{entity::Entity, transform::Transform};
 use crate::{
   prefabs::ColoredShaderPrefab,
   camera::Camera,
-  settings::GameSettings,
-  player::MainPlayer
+  settings::GameSettings
 };
 use super::{
   RenderTarget, 
-  primitives::cube::CubePrimitive
+  primitives::cube::CenteredCubePrimitive
 };
 
 // TODO: entity models
 pub fn render_entities(
   mut target: NonSendSync<UniqueViewMut<RenderTarget>>, 
-  buffers: NonSendSync<UniqueView<CubePrimitive>>,
+  buffers: NonSendSync<UniqueView<CenteredCubePrimitive>>,
   program: NonSendSync<UniqueView<ColoredShaderPrefab>>,
   camera: View<Camera>,
   settings: UniqueView<GameSettings>,
diff --git a/kubi/src/rendering/primitives/cube.rs b/kubi/src/rendering/primitives/cube.rs
index cee8f02..297dcb1 100644
--- a/kubi/src/rendering/primitives/cube.rs
+++ b/kubi/src/rendering/primitives/cube.rs
@@ -6,6 +6,21 @@ use super::PositionOnlyVertex;
 #[derive(Unique)]
 pub struct CubePrimitive(pub VertexBuffer<PositionOnlyVertex>, pub IndexBuffer<u16>);
 
+#[derive(Unique)]
+pub struct CenteredCubePrimitive(pub VertexBuffer<PositionOnlyVertex>, pub IndexBuffer<u16>);
+
+const CENTERED_CUBE_VERTICES: &[PositionOnlyVertex] = &[
+  // front
+  PositionOnlyVertex { position: [-0.5, -0.5, 0.5] },
+  PositionOnlyVertex { position: [ 0.5, -0.5, 0.5] },
+  PositionOnlyVertex { position: [ 0.5,  0.5, 0.5] },
+  PositionOnlyVertex { position: [-0.5,  0.5, 0.5] },
+  // back
+  PositionOnlyVertex { position: [-0.5, -0.5, -0.5] },
+  PositionOnlyVertex { position: [ 0.5, -0.5, -0.5] },
+  PositionOnlyVertex { position: [ 0.5,  0.5, -0.5] },
+  PositionOnlyVertex { position: [-0.5,  0.5, -0.5] },
+];
 const CUBE_VERTICES: &[PositionOnlyVertex] = &[
   // front
   PositionOnlyVertex { position: [0.0, 0.0, 1.0] },
@@ -43,14 +58,28 @@ pub(super) fn init_cube_primitive(
   storages: AllStoragesView,
   display: NonSendSync<UniqueView<Renderer>>
 ) {
-  let vert = VertexBuffer::new(
-    &display.display,
-    CUBE_VERTICES
-  ).unwrap();
-  let index = IndexBuffer::new(
-    &display.display,
-    PrimitiveType::TrianglesList, 
-    CUBE_INDICES
-  ).unwrap();
-  storages.add_unique_non_send_sync(CubePrimitive(vert, index));
+  {
+    let vert = VertexBuffer::new(
+      &display.display,
+      CUBE_VERTICES
+    ).unwrap();
+    let index = IndexBuffer::new(
+      &display.display,
+      PrimitiveType::TrianglesList, 
+      CUBE_INDICES
+    ).unwrap();
+    storages.add_unique_non_send_sync(CubePrimitive(vert, index));
+  }
+  {
+    let vert = VertexBuffer::new(
+      &display.display,
+      CENTERED_CUBE_VERTICES
+    ).unwrap();
+    let index = IndexBuffer::new(
+      &display.display,
+      PrimitiveType::TrianglesList, 
+      CUBE_INDICES
+    ).unwrap();
+    storages.add_unique_non_send_sync(CenteredCubePrimitive(vert, index));
+  }
 }