From 15de1323504e3ae15a05438f98d20adbac568a0f Mon Sep 17 00:00:00 2001
From: XavierCS-dev <xavierelwell@gmail.com>
Date: Mon, 11 Mar 2024 19:45:13 +0000
Subject: [PATCH] Update README and camera matrix

---
 README.md                   | 1 +
 src/engine/camera/camera.rs | 7 ++++++-
 src/main.rs                 | 7 ++++---
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 0761d15..22e3170 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@
   - [ ] Hide main loop from user, or at least, make it easier to use
   - [ ] Event System
 - [ ] Provide a method to set a background image
+- [ ] Fix camera stretching
 
 - [x] Further goals (0.2.0 release blockers)
   - [x] Implement Transformation2D
diff --git a/src/engine/camera/camera.rs b/src/engine/camera/camera.rs
index 2bac051..d405c66 100644
--- a/src/engine/camera/camera.rs
+++ b/src/engine/camera/camera.rs
@@ -25,7 +25,12 @@ impl Camera2D {
         let proj_mat = Matrix4::from_slice([
             [1.0 / (aspect_ratio * (fov_rad / 2.0).tan()), 0.0, 0.0, 0.0],
             [0.0, 1.0 / ((fov_rad / 2.0).tan()), 0.0, 0.0],
-            [0.0, 0.0, far / (far - near), -(far * near) / (far - near)],
+            [
+                0.0,
+                0.0,
+                0.5 * far / (far - near),
+                -(far * near) / (far - near),
+            ],
             [0.0, 0.0, 0.0, 1.0],
         ]);
         let buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
diff --git a/src/main.rs b/src/main.rs
index dfb472b..98b5112 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,7 +14,7 @@ use winit::{
 
 fn main() {
     println!("Hello, world!");
-    let (mut app, event_loop) = effect_engine::init_engine(PhysicalSize::new(800, 600), 90.0);
+    let (mut app, event_loop) = effect_engine::init_engine(PhysicalSize::new(800, 600), 45.0);
     let mut before = Instant::now();
     let mut after = Instant::now();
     let tex_id = TextureID("tree");
@@ -26,11 +26,12 @@ fn main() {
         .init_layer(layer_id, vec![tex, evil], PhysicalSize::new(32, 32))
         .unwrap();
     let position = Vector3::new(-0.5, -0.5, 0.0);
-    let ent = app.init_entity(position, evil_id, &mut layer);
+    let mut ent = app.init_entity(position, evil_id, &mut layer);
     let mut ent_good = app.init_entity(position, tex_id, &mut layer);
     EntitySystem2D::set_position(&mut ent_good, Vector3::new(0.0, 0.0, 0.0));
     EntitySystem2D::set_rotation(&mut ent_good, 30.0);
     EntitySystem2D::set_scale(&mut ent_good, 0.25);
+    EntitySystem2D::set_scale(&mut ent, 0.5);
     let mut ents_owner = vec![ent, ent_good];
     let mut ents = Vec::new();
     for ent in ents_owner.iter() {
@@ -40,7 +41,7 @@ fn main() {
     drop(ents);
     let mut layers = vec![layer];
     let camera = app.camera_mut();
-    Camera2DSystem::transform(camera, Vector3::new(-0.5, -0.5, 0.0));
+    Camera2DSystem::transform(camera, Vector3::new(-1.0, -1.0, 0.0));
     app.update_camera();
 
     let mut rotation = 0.0;