camera scrolls right as the player moves

Cargo.lock

@@ -426,9 +426,9 @@ checksum = "3c6015bb2d300661a0014e29025374a32a68e8ef7e4effe547baa00eef38b8e3"
 
 [[package]]
 name = "itoa"
-version = "0.4.6"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc6f3ad7b9d11a0c00842ff8de1b60ee58661048eb8049ed33c73594f359d7e6"
+checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
 
 [[package]]
 name = "jpeg-decoder"
@@ -647,6 +647,7 @@ dependencies = [
  "rmp-serde",
  "sdl2",
  "serde",
+ "serde_json",
  "tokio",
  "tracing",
  "tracing-subscriber",
@@ -1201,9 +1202,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.60"
+version = "1.0.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1500e84d27fe482ed1dc791a56eddc2f230046a040fa908c08bda1d9fb615779"
+checksum = "bcbd0344bc6533bc7ec56df11d42fb70f1b912351c0825ccb7211b59d8af7cf5"
 dependencies = [
  "itoa",
  "ryu",

Cargo.toml

@@ -27,6 +27,7 @@ rand = "0.6.5"
 rcgen = "0.8.11"
 rmp-serde = "0.15.4"
 serde = { version = "1.0.125", features = ["derive"] }
+serde_json = "1.0.73"
 sdl2 = "0.32.2"
 tokio = { version = "1.5.0", features = ["full"] }
 tracing = "0.1.22"

src/bin/platformer/graphics.rs

@@ -177,8 +177,28 @@ impl Graphics {
 		level: &crate::LoadedLevel,
 		camera: &crate::Camera,
 	) {
+		use serde::Deserialize;
 		use uniforms as u;
 		
+		#[derive (Default, Deserialize)]
+		struct Config {
+			camera: CameraCfg,
+		}
+		
+		#[derive (Default, Deserialize)]
+		struct CameraCfg {
+			#[serde(default)]
+			rotate_mix: f32,
+			#[serde(default)]
+			translate_mix: f32,
+		}
+		/*
+		let cfg: Option <Config> = std::fs::read_to_string ("config.json").ok ()
+		.map (|s| serde_json::from_str (s.as_str ()).ok ())
+		.flatten ();
+		
+		let cfg = cfg.unwrap_or_else (Config::default);
+		*/
 		let white = color_from_255 ((255.0, 255.0, 255.0));
 		let black = color_from_255 ((0.0, 0.0, 0.0));
 		let shadow_blue = color_from_255 ((68.0, 36.0, 52.0));
@@ -195,9 +215,17 @@ impl Graphics {
 			_
 		) = camera.transform.clone ().decomposed ();
 		
-		let view_mat = proj_mat *
-		Mat4::from_quat (Quat::from_array (cam_rot).inverse ());
-		//Mat4::from_translation (cam_trans.into ()) *
+		let cam_trans = Vec3::from (cam_trans);
+		let cam_trans = Vec3::new (cam_trans.x.max (state.player.pos.x + 4.0), cam_trans.y, cam_trans.z);
+		
+		let view_mat = 
+		Mat4::from_quat (Quat::from_array (cam_rot).inverse ()) *
+		Mat4::from_translation (-cam_trans);
+		
+		// println! ("Camera is at {:?}", view_mat.inverse ().transform_point3 ((0.0, 0.0, 0.0).into ()));
+		
+		let view_mat = proj_mat * view_mat;
+		
 		let world_model_mat = Mat4::IDENTITY;
 		
 		self.passes [0].with (gl_state, || {

src/bin/platformer/main.rs

@@ -1,5 +1,6 @@
 use std::{
 	collections::HashMap,
+	time::Instant,
 };
 
 use anyhow::Result;
@@ -177,6 +178,9 @@ async fn main () -> Result <()> {
 	game_state.reset_level (&level);
 	game_state.phys_tris = phys_tris;
 	
+	let mut next_mpf_print = 60;
+	let mut last_mpf_instant = Instant::now ();
+	
 	'running: loop {
 		let _frames_to_do = time_step.step ();
 		let mut player_wants_to_jump = false;
@@ -292,13 +296,23 @@ async fn main () -> Result <()> {
 			});
 		}
 		
-		dbg! (game_state.player.pos);
+		// dbg! (game_state.player.pos);
 		
 		window.gl_make_current (&gl_ctx).unwrap ();
 		
 		graphics.draw (&game_state, &mut gl_state, &level, &camera);
 		graphics.frames += 1;
 		
+		if graphics.frames == next_mpf_print {
+			let now = Instant::now ();
+			let mpf = (now - last_mpf_instant).as_millis () / 60;
+			
+			dbg! (mpf);
+			
+			next_mpf_print += 60;
+			last_mpf_instant = now;
+		}
+		
 		window.gl_swap_window ();
 		
 		tokio::time::sleep (Duration::from_millis (15)).await;