stuff

src/bin/platformer/graphics.rs

@@ -260,6 +260,14 @@ impl Graphics {
 							None => continue,
 							Some (x) => x,
 						};
+						let uv_coords = match prim.get (&Semantic::TexCoords (0)) {
+							None => continue,
+							Some (x) => x,
+						};
+						let uv_view = match uv_coords.view () {
+							None => continue,
+							Some (x) => x,
+						};
 						let indices = match prim.indices () {
 							None => continue,
 							Some (x) => x,
@@ -278,6 +286,14 @@ impl Graphics {
 								4 * 3,
 								&level.buffer [positions.offset () + pos_view.offset ()] as *const u8 as *const c_void,
 							);
+							gl::VertexAttribPointer (
+								attrs [a::UV].unwrap (),
+								2,
+								gl::FLOAT,
+								0,
+								4 * 2,
+								&level.buffer [uv_coords.offset () + uv_view.offset ()] as *const u8 as *const c_void,
+							);
 							gl::DrawElements (
 								gl::TRIANGLES,
 								indices.count ().try_into ().unwrap (),
@@ -291,10 +307,10 @@ impl Graphics {
 			
 			glezz::uniform_3fv (unis [&u::ALBEDO], &shadow_blue);
 			
-			if false {
+			if true {
 				// Raycast for player shadow
 				let coll = opengl_rust::physics::get_candidate (
-					&[], &state.aabbs,
+					&state.phys_tris, &state.aabbs,
 					state.player.pos,
 					state.player.pos + Vec3::new (0.0, 0.0, -100.0),
 					0.0

src/bin/platformer/main.rs

@@ -21,33 +21,11 @@ mod graphics;
 
 use graphics::Graphics;
 
+#[derive (Default)]
 pub struct GameState {
 	player: PhysicsBody,
 	aabbs: Vec <opengl_rust::physics::Aabb>,
-}
-
-impl Default for GameState {
-	fn default () -> Self {
-		let player = Default::default ();
-		let aabbs = [
-			((-4.0, -4.0, -3.0), (4.0, 4.0, -1.0)),
-			((-1.5, 1.0, -1.0), (-0.5, 2.0, 0.0)),
-			((-0.5, 1.0, 0.0), (0.5, 2.0, 1.0)),
-			((0.5, 1.0, 1.0), (1.5, 2.0, 2.0)),
-		].into_iter ()
-		.map (|(min, max)| {
-			opengl_rust::physics::Aabb {
-				min: min.into (),
-				max: max.into (),
-			}
-		})
-		.collect ();
-		
-		Self {
-			player,
-			aabbs,
-		}
-	}
+	phys_tris: Vec <opengl_rust::physics::Triangle>,
 }
 
 impl GameState {
@@ -66,7 +44,7 @@ async fn main () -> Result <()> {
 	
 	let sdl_context = sdl2::init ().map_err (|e| anyhow! ("Can't init SDL: {}", e))?;
 	let video_subsystem = sdl_context.video ().map_err (|e| anyhow! ("Can't get SDL video subsystem: {}", e))?;
-	let window = video_subsystem.window ("3D platformer", 320, 240)
+	let window = video_subsystem.window ("3D platformer", 320 * 2, 240 * 2)
 		.position_centered ()
 		.opengl ()
 		.build ()
@@ -89,6 +67,82 @@ async fn main () -> Result <()> {
 	let mut time_step = TimeStep::new (60, 1000);
 	
 	let level = LoadedLevel::from_path ("gltf/level-00.glb")?;
+	let scene = level.level.scenes ().next ().unwrap ();
+	
+	let mut phys_tris: Vec <opengl_rust::physics::Triangle> = Vec::new ();
+	
+	for node in scene.nodes () {
+		let mesh = match node.mesh () {
+			None => continue,
+			Some (x) => x,
+		};
+		
+		let m = Mat4::from_cols_array_2d (&node.transform ().matrix ());
+		
+		for prim in mesh.primitives () {
+			use gltf::Semantic;
+			
+			let positions = match prim.get (&Semantic::Positions) {
+				None => continue,
+				Some (x) => x,
+			};
+			let pos_view = match positions.view () {
+				None => continue,
+				Some (x) => x,
+			};
+			let indices = match prim.indices () {
+				None => continue,
+				Some (x) => x,
+			};
+			let indices_view = match indices.view () {
+				None => continue,
+				Some (x) => x,
+			};
+			
+			let idx_start = indices.offset () + indices_view.offset ();
+			let idx_slice = &level.buffer [idx_start..idx_start + indices.count () * 2];
+			let vert_start = positions.offset () + pos_view.offset ();
+			let vert_slice = &level.buffer [vert_start..vert_start + positions.count () * 4 * 3];
+			
+			for chunk in idx_slice.chunks_exact (2 * 3) {
+				let read_idx = |i: usize| u16::from_le_bytes ([chunk [i * 2 + 0], chunk [i * 2 + 1]]);
+				
+				let idxs = [
+					read_idx (0),
+					read_idx (1),
+					read_idx (2),
+				];
+				
+				let read_pos_coord = |i| f32::from_le_bytes ([
+					vert_slice [i * 4 + 0],
+					vert_slice [i * 4 + 1],
+					vert_slice [i * 4 + 2],
+					vert_slice [i * 4 + 3],
+				]);
+				
+				let read_pos = move |i| {
+					let i = usize::try_from (i).unwrap ();
+					m.transform_point3 (Vec3::new (
+						read_pos_coord (i * 3 + 0),
+						read_pos_coord (i * 3 + 1),
+						read_pos_coord (i * 3 + 2),
+					))
+				};
+				
+				// glTF triangle winding is backwards from what I expected
+				// no biggie
+				let verts = [
+					read_pos (idxs [0]),
+					read_pos (idxs [2]),
+					read_pos (idxs [1]),
+				];
+				
+				phys_tris.push (opengl_rust::physics::Triangle {
+					verts,
+				});
+			}
+		}
+	}
 	
 	let mut graphics = Graphics::new ();
 	
@@ -105,6 +159,7 @@ async fn main () -> Result <()> {
 	let mut player_jump_vec: Option <Vec3> = None;
 	
 	game_state.reset_level (&level);
+	game_state.phys_tris = phys_tris;
 	
 	'running: loop {
 		let _frames_to_do = time_step.step ();
@@ -157,7 +212,7 @@ async fn main () -> Result <()> {
 			}
 		}
 		
-		let phys_result = opengl_rust::physics::step (&phys_params, &[], &game_state.aabbs, 0.5, &game_state.player);
+		let phys_result = opengl_rust::physics::step (&phys_params, &game_state.phys_tris, &[], 0.5, &game_state.player);
 		
 		game_state.player = phys_result.body;
 		// tracing::debug! ("player pos: {}", game_state.player.pos);

src/physics.rs

@@ -14,7 +14,7 @@ pub struct PhysicsResult {
 	pub kill: bool,
 }
 
-#[derive (Copy, Clone)]
+#[derive (Copy, Clone, Debug)]
 pub struct Triangle {
 	pub verts: [Vec3; 3],
 }