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rendering chunks
This commit is contained in:
parent
3cfd6448cc
commit
213075c5f9
22
src/game.rs
22
src/game.rs
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@ -1,6 +1,5 @@
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use glam::Vec2;
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use glium::{Surface, uniform};
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use glium::uniforms::{Sampler, MinifySamplerFilter, MagnifySamplerFilter};
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use glium::Surface;
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use glium::glutin::{
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event::{Event, WindowEvent, DeviceEvent},
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event_loop::{EventLoop, ControlFlow},
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@ -19,7 +18,7 @@ mod options;
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use assets::Assets;
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use display::init_display;
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use shaders::{Programs, chunk::Vertex as ChunkVertex};
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use shaders::Programs;
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use camera::Camera;
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use controller::Controls;
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use world::World;
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@ -53,15 +52,15 @@ pub fn run() {
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let options = GameOptions::default();
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log::info!("init game state");
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let mut state = State::init();
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state.camera.position = [0., 0., -1.];
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state.camera.position = [0., 260., -1.];
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log::info!("game loaded");
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//=======================
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let vertex1 = ChunkVertex { position: [-0.5, -0.5, 0.], uv: [0., 0.], normal: [0., 1., 0.] };
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let vertex2 = ChunkVertex { position: [ 0.0, 0.5, 0.], uv: [0., 1.], normal: [0., 1., 0.] };
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let vertex3 = ChunkVertex { position: [ 0.5, -0.5, 0.], uv: [1., 1.], normal: [0., 1., 0.] };
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let shape = vec![vertex1, vertex2, vertex3];
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let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap();
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// let vertex1 = ChunkVertex { position: [-0.5, -0.5, 0.], uv: [0., 0.], normal: [0., 1., 0.] };
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// let vertex2 = ChunkVertex { position: [ 0.0, 0.5, 0.], uv: [0., 1.], normal: [0., 1., 0.] };
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// let vertex3 = ChunkVertex { position: [ 0.5, -0.5, 0.], uv: [1., 1.], normal: [0., 1., 0.] };
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// let shape = vec![vertex1, vertex2, vertex3];
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// let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap();
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//=======================
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let mut last_render = Instant::now();
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@ -122,12 +121,11 @@ pub fn run() {
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let target_dimensions = target.get_dimensions();
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let perspective = state.camera.perspective_matrix(target_dimensions);
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let view = state.camera.view_matrix();
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//Draw example triangle
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//Draw chunks
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state.world.render(&mut target, &programs, &assets, perspective, view);
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//Draw example triangle
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// target.draw(
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// &vertex_buffer,
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// glium::index::NoIndices(glium::index::PrimitiveType::TrianglesList),
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@ -109,7 +109,7 @@ impl Default for Controls {
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fn default() -> Self {
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Self {
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inputs: Default::default(),
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speed: 1.,
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speed: 10.,
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sensitivity: 2.,
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}
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}
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@ -1,6 +1,8 @@
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use glam::{Vec2, IVec2};
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use glium::{
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Display, Frame, Surface, uniform,
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Display, Frame, Surface,
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DrawParameters, Depth,
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DepthTest, uniform,
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uniforms::{
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Sampler, SamplerBehavior,
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MinifySamplerFilter, MagnifySamplerFilter,
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@ -24,6 +26,8 @@ const NEGATIVE_X_NEIGHBOR: usize = 1;
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const POSITIVE_Z_NEIGHBOR: usize = 2;
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const NEGATIVE_Z_NEIGHBOR: usize = 3;
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const MAX_TASKS: usize = 8;
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pub struct World {
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pub chunks: HashMap<IVec2, Chunk>,
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pub thread: WorldThreading,
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@ -37,12 +41,14 @@ impl World {
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self.chunks.get(&(position - IVec2::new(0, 1))),
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]
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}
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pub fn new() -> Self {
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Self {
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chunks: HashMap::new(),
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thread: WorldThreading::new(),
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}
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}
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pub fn render(
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&self,
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target: &mut Frame,
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@ -56,28 +62,39 @@ impl World {
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magnify_filter: MagnifySamplerFilter::Nearest,
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..Default::default()
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};
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let draw_parameters = DrawParameters {
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depth: Depth {
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test: DepthTest::IfLess,
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write: true,
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..Default::default()
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},
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//backface_culling: glium::draw_parameters::BackfaceCullingMode::CullClockwise,
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..Default::default()
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};
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for (&position, chunk) in &self.chunks {
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if let Some((_, vertex, index)) = &chunk.mesh {
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if let Some(mesh) = &chunk.mesh {
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target.draw(
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vertex,
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index,
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&mesh.vertex_buffer,
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&mesh.index_buffer,
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&programs.chunk,
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&uniform! {
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model: [
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[1., 0., 0., 0.],
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[0., 1., 0., 0.],
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[0., 0., 1., 0.],
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//[0., 0., 0., 1.0_f32]
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[(position.x * CHUNK_SIZE as i32) as f32, 0., (position.y * CHUNK_SIZE as i32) as f32, 1.0_f32]
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],
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view: view,
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persperctive: perspective,
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perspective: perspective,
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tex: Sampler(&assets.textures.block_atlas, sampler)
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},
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&Default::default()
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&draw_parameters
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).unwrap();
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}
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}
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}
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pub fn update_loaded_chunks(&mut self, around_position: Vec2, options: &GameOptions, display: &Display) {
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let render_dist = options.render_distance as i32 + 1;
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let inside_chunk = (around_position / CHUNK_SIZE as f32).as_ivec2();
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@ -98,43 +115,49 @@ impl World {
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{
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//we only need mutable reference here:
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let chunk = self.chunks.get_mut(&position).unwrap();
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if x == 0 || z == 0 || x == render_dist || z == render_dist {
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if x == -render_dist || z == -render_dist || x == render_dist || z == render_dist {
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chunk.desired = ChunkState::Loaded;
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} else {
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chunk.desired = ChunkState::Rendered;
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}
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}
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//borrow chunk immutably
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let chunk = self.chunks.get(&position).unwrap();
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if matches!(chunk.state, ChunkState::Nothing) && matches!(chunk.desired, ChunkState::Loaded | ChunkState::Rendered) {
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self.thread.queue_load(position);
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} else if matches!(chunk.state, ChunkState::Loaded) && matches!(chunk.desired, ChunkState::Rendered) {
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fn all_some<'a>(x: [Option<&'a Chunk>; 4]) -> Option<[&'a Chunk; 4]> {
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Some([x[0]?, x[1]?, x[2]?, x[3]?])
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}
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if let Some(neighbors) = all_some(self.chunk_neighbors(chunk.position)) {
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if {
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neighbors[0].block_data.is_some() &&
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neighbors[1].block_data.is_some() &&
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neighbors[2].block_data.is_some() &&
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neighbors[3].block_data.is_some()
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} {
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self.thread.queue_mesh(
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position,
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chunk.block_data.clone().unwrap(),
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[
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neighbors[0].block_data.clone().unwrap(),
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neighbors[1].block_data.clone().unwrap(),
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neighbors[2].block_data.clone().unwrap(),
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neighbors[3].block_data.clone().unwrap(),
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]
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);
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if self.thread.task_amount() < MAX_TASKS {
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if matches!(chunk.state, ChunkState::Nothing) && matches!(chunk.desired, ChunkState::Loaded | ChunkState::Rendered) {
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self.thread.queue_load(position);
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self.chunks.get_mut(&position).unwrap().state = ChunkState::Loading;
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} else if matches!(chunk.state, ChunkState::Loaded) && matches!(chunk.desired, ChunkState::Rendered) {
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let mut state_changed = false;
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fn all_some<'a>(x: [Option<&'a Chunk>; 4]) -> Option<[&'a Chunk; 4]> {
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Some([x[0]?, x[1]?, x[2]?, x[3]?])
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}
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if let Some(neighbors) = all_some(self.chunk_neighbors(chunk.position)) {
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if {
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neighbors[0].block_data.is_some() &&
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neighbors[1].block_data.is_some() &&
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neighbors[2].block_data.is_some() &&
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neighbors[3].block_data.is_some()
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} {
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self.thread.queue_mesh(
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position,
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chunk.block_data.clone().unwrap(),
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[
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neighbors[0].block_data.clone().unwrap(),
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neighbors[1].block_data.clone().unwrap(),
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neighbors[2].block_data.clone().unwrap(),
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neighbors[3].block_data.clone().unwrap(),
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]
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);
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state_changed = true;
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}
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}
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if state_changed {
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self.chunks.get_mut(&position).unwrap().state = ChunkState::Rendering;
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}
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}
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}
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}
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}
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//Unloads and state downgrades
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self.chunks.retain(|_, chunk| {
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match chunk.desired {
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@ -19,10 +19,16 @@ pub enum ChunkState {
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pub type ChunkData = Box<[[[Block; CHUNK_SIZE]; CHUNK_HEIGHT]; CHUNK_SIZE]>;
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pub struct ChunkMesh {
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pub is_dirty: bool,
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pub vertex_buffer: VertexBuffer<ChunkVertex>,
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pub index_buffer: IndexBuffer<u32>,
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}
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pub struct Chunk {
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pub position: IVec2,
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pub block_data: Option<ChunkData>,
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pub mesh: Option<(bool, VertexBuffer<ChunkVertex>, IndexBuffer<u16>)>,
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pub mesh: Option<ChunkMesh>,
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pub state: ChunkState,
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pub desired: ChunkState,
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}
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@ -3,7 +3,7 @@ use glium::{Display, VertexBuffer, IndexBuffer, index::PrimitiveType};
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use std::{mem, thread::{self, JoinHandle}};
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use hashbrown::HashMap;
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use super::chunk::{Chunk, ChunkData, ChunkState};
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use crate::game::shaders::chunk::Vertex as ChunkVertex;
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use crate::game::{shaders::chunk::Vertex as ChunkVertex, world::chunk::ChunkMesh};
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mod world_gen;
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mod mesh_gen;
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//Options are needed here to take ownership,
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//None values should never appear here!
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pub load_tasks: HashMap<IVec2, Option<JoinHandle<ChunkData>>>,
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pub mesh_tasks: HashMap<IVec2, Option<JoinHandle<(Vec<ChunkVertex>, Vec<u16>)>>>,
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pub mesh_tasks: HashMap<IVec2, Option<JoinHandle<(Vec<ChunkVertex>, Vec<u32>)>>>,
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}
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impl WorldThreading {
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pub fn new() -> Self {
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let handle = mem::take(handle).unwrap();
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let (shape, index) = handle.join().unwrap();
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let chunk = chunks.get_mut(position).unwrap();
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chunk.mesh = Some((
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true,
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VertexBuffer::immutable(display, &shape).expect("Failed to build VertexBuffer"),
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IndexBuffer::immutable(display, PrimitiveType::TrianglesList, &index).expect("Failed to build IndexBuffer")
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));
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chunk.mesh = Some(ChunkMesh {
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is_dirty: false,
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vertex_buffer: VertexBuffer::new(display, &shape).expect("Failed to build VertexBuffer"),
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index_buffer: IndexBuffer::new(display, PrimitiveType::TrianglesList, &index).expect("Failed to build IndexBuffer")
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});
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chunk.state = ChunkState::Rendered;
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false
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});
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@ -1,15 +1,126 @@
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use glam::IVec2;
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use crate::game::world::chunk::ChunkData;
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use crate::game::shaders::chunk::Vertex as ChunkVertex;
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use glam::{IVec2, IVec3, Vec2, Vec3A, vec3a, vec2, ivec3};
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use strum::{EnumIter, IntoEnumIterator};
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use crate::game::{
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world::{
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POSITIVE_X_NEIGHBOR,
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NEGATIVE_X_NEIGHBOR,
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POSITIVE_Z_NEIGHBOR,
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NEGATIVE_Z_NEIGHBOR,
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chunk::{ChunkData, CHUNK_SIZE, CHUNK_HEIGHT}
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},
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shaders::chunk::Vertex,
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blocks::Block
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};
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pub fn generate_mesh(position: IVec2, chunk_data: ChunkData, neighbors: [ChunkData; 4]) -> (Vec<ChunkVertex>, Vec<u16>) {
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let mut vertex = Vec::new();
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let mut index = Vec::new();
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vertex.push(ChunkVertex { position: [-0.5, -0.5, 0.], uv: [0., 0.], normal: [0., 1., 0.] });
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vertex.push(ChunkVertex { position: [ 0.0, 0.5, 0.], uv: [0., 1.], normal: [0., 1., 0.] });
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vertex.push(ChunkVertex { position: [ 0.5, -0.5, 0.], uv: [1., 1.], normal: [0., 1., 0.] });
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index.push(0);
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index.push(1);
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index.push(2);
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(vertex, index)
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#[repr(usize)]
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#[derive(Clone, Copy, Debug, EnumIter)]
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pub enum CubeFace {
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Top = 0,
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Front = 1,
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Left = 2,
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Right = 3,
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Back = 4,
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Bottom = 5,
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}
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const CUBE_FACE_VERTICES: [[Vec3A; 4]; 6] = [
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[vec3a(0., 1., 0.), vec3a(0., 1., 1.), vec3a(1., 1., 0.), vec3a(1., 1., 1.)],
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[vec3a(0., 0., 0.), vec3a(0., 1., 0.), vec3a(1., 0., 0.), vec3a(1., 1., 0.)],
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[vec3a(0., 0., 1.), vec3a(0., 1., 1.), vec3a(0., 0., 0.), vec3a(0., 1., 0.)],
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[vec3a(1., 0., 0.), vec3a(1., 1., 0.), vec3a(1., 0., 1.), vec3a(1., 1., 1.)],
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[vec3a(1., 0., 1.), vec3a(1., 1., 1.), vec3a(0., 0., 1.), vec3a(0., 1., 1.)],
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[vec3a(0., 0., 1.), vec3a(0., 0., 0.), vec3a(1., 0., 1.), vec3a(1., 0., 0.)]
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];
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pub const CUBE_FACE_NORMALS: [[f32; 3]; 6] = [
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[0., 1., 0.],
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[0., 0., -1.],
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[-1., 0., 0.],
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[1., 0., 0.],
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[0., 0., 1.],
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[0., -1., 0.]
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];
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pub const CUBE_FACE_INDICES: [u32; 6] = [0, 1, 2, 2, 1, 3];
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#[derive(Default)]
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struct MeshBuilder {
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vertex_buffer: Vec<Vertex>,
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index_buffer: Vec<u32>,
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idx_counter: u32,
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}
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impl MeshBuilder {
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pub fn new() -> Self {
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Self::default()
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}
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pub fn add_face(&mut self, face: CubeFace, coord: IVec3, uvs: [Vec2; 4]) {
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let coord = coord.as_vec3a();
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let face_index = face as usize;
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//Push vertexes
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let norm = CUBE_FACE_NORMALS[face_index];
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let vert = CUBE_FACE_VERTICES[face_index];
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self.vertex_buffer.reserve(4);
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for i in 0..4 {
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self.vertex_buffer.push(Vertex {
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position: (coord + vert[i]).to_array(),
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normal: norm,
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uv: uvs[i].to_array()
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});
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}
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//Push indices
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self.index_buffer.extend_from_slice(&CUBE_FACE_INDICES.map(|x| x + self.idx_counter));
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self.idx_counter += 4;
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}
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pub fn finish(self) -> (Vec<Vertex>, Vec<u32>) {
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(self.vertex_buffer, self.index_buffer)
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}
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}
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pub fn generate_mesh(position: IVec2, chunk_data: ChunkData, neighbors: [ChunkData; 4]) -> (Vec<Vertex>, Vec<u32>) {
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let get_block = |pos: IVec3| -> Block {
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if pos.x < 0 {
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neighbors[NEGATIVE_X_NEIGHBOR][(CHUNK_SIZE as i32 + pos.x) as usize][pos.y as usize][pos.z as usize]
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} else if pos.x >= CHUNK_SIZE as i32 {
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neighbors[POSITIVE_X_NEIGHBOR][pos.x as usize - CHUNK_SIZE as usize][pos.y as usize][pos.z as usize]
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} else if pos.z < 0 {
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neighbors[NEGATIVE_Z_NEIGHBOR][pos.x as usize][pos.y as usize][(CHUNK_SIZE as i32 + pos.z) as usize]
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} else if pos.z >= CHUNK_SIZE as i32 {
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neighbors[POSITIVE_Z_NEIGHBOR][pos.x as usize][pos.y as usize][pos.z as usize - CHUNK_SIZE as usize]
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} else {
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chunk_data[pos.x as usize][pos.y as usize][pos.z as usize]
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}
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};
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let mut builer = MeshBuilder::new();
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for x in 0..CHUNK_SIZE {
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for y in 0..CHUNK_HEIGHT {
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for z in 0..CHUNK_SIZE {
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let coord = ivec3(x as i32, y as i32, z as i32);
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if get_block(coord).descriptor().render.is_none() {
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continue
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}
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for face in CubeFace::iter() {
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let facing = Vec3A::from_array(CUBE_FACE_NORMALS[face as usize]).as_ivec3();
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let facing_coord = coord + facing;
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let show = {
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(facing_coord.y < 0) ||
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(facing_coord.y >= CHUNK_HEIGHT as i32) ||
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get_block(facing_coord).descriptor().render.is_none()
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};
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if show {
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builer.add_face(face, coord, [
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vec2(0., 0.),
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vec2(0., 1.),
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vec2(1., 0.),
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vec2(1., 1.),
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]);
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}
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||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
builer.finish()
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue