From 1e6a61f142fe56a016a52d218b4941f375c62a52 Mon Sep 17 00:00:00 2001
From: ghostly_zsh <pokeball.181818@gmail.com>
Date: Mon, 24 Mar 2025 21:00:29 -0500
Subject: [PATCH] starfield exists

---
 crates/client/src/rendering/mod.rs | 42 ++++++++++++++++++++++++++++--
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/crates/client/src/rendering/mod.rs b/crates/client/src/rendering/mod.rs
index e85a83d0e40da5a2ee148ba67d0f8e7a82d2be11..a923f5bf56c16925b97c15759ff7e5804f64df38 100644
--- a/crates/client/src/rendering/mod.rs
+++ b/crates/client/src/rendering/mod.rs
@@ -16,7 +16,7 @@ use glutin::surface::{Surface, WindowSurface, GlSurface, SwapInterval};
 use glutin::{config::{ConfigTemplateBuilder, GlConfig}, context::{ContextApi, ContextAttributesBuilder, PossiblyCurrentContext}, display::GetGlDisplay, prelude::{GlDisplay, NotCurrentGlContext}};
 #[cfg(not(target_arch = "wasm32"))]
 use glutin_winit::{DisplayBuilder, GlWindow};
-use nalgebra::{Vector3, Vector4};
+use nalgebra::{Matrix4, Scale3, Translation2, Translation3, Vector3, Vector4};
 use starkingdoms_common::packet::{ButtonType, Packet};
 use starkingdoms_common::PlanetType;
 #[cfg(target_arch = "wasm32")]
@@ -415,9 +415,47 @@ impl ApplicationHandler for App {
             gl.active_texture(glow::TEXTURE0);
             
             let view_loc = gl.get_uniform_location(self.program.unwrap(), "view");
-            gl.uniform_matrix_4_f32_slice(view_loc.as_ref(), true, view);
             let model_loc = gl.get_uniform_location(self.program.unwrap(), "model");
 
+            gl.uniform_matrix_4_f32_slice(view_loc.as_ref(), true, view);
+
+            if !self.textures.contains_key("starfield.svg") {
+                let assets = self.world.resource::<Assets>();
+                match assets.get("starfield.svg") {
+                    Some(image) => {
+                        let texture_object = gl.create_texture().expect("Failed to create texture object");
+                        gl.bind_texture(glow::TEXTURE_2D, Some(texture_object));
+                        gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_MIN_FILTER, glow::LINEAR_MIPMAP_LINEAR as i32);
+                        gl.tex_image_2d(glow::TEXTURE_2D, 0, glow::RGBA as i32,
+                            image.width as i32, image.height as i32, 0, glow::RGBA,
+                            glow::UNSIGNED_BYTE, PixelUnpackData::Slice(Some(&image.bytes)));
+                        gl.generate_mipmap(glow::TEXTURE_2D);
+
+                        self.textures.insert("starfield.svg".to_string(), texture_object);
+                    }
+                    None => {}
+                }
+            }
+            if self.textures.contains_key("starfield.svg") {
+                gl.bind_texture(glow::TEXTURE_2D, self.textures.get("starfield.svg").copied());
+
+                let camera = self.world.get_resource::<Camera>().unwrap();
+                let x = -(camera.x + camera.x.signum() * 200.0)
+                    + camera.x % 400.0;
+                let y = -(camera.y + camera.y.signum() * 200.0)
+                    + camera.y % 400.0;
+                let x_range = camera.width as f32 / camera.zoom / 400.0;
+                let y_range = camera.height as f32 / camera.zoom / 400.0;
+                for i in ((-x_range/2.0) as i32 - 1)..=((x_range/2.0) as i32 + 1) {
+                    for j in ((-y_range/2.0) as i32 - 1)..=((y_range/2.0) as i32 + 1) {
+                        let model = Translation3::new(x + (i*400) as f32, y + (j*400) as f32, 0.0).to_homogeneous()
+                            * Scale3::new(200.0, 200.0, 1.0).to_homogeneous();
+                        gl.uniform_matrix_4_f32_slice(model_loc.as_ref(), false, model.as_slice());
+                        gl.draw_elements(glow::TRIANGLES, 6, glow::UNSIGNED_INT, 0);
+                    }
+                }
+            }
+
             for (transform, texture) in sprites {
                 if !self.textures.contains_key(&texture.name) {
                     let assets = self.world.resource::<Assets>();