1 files changed, 158 insertions, 0 deletions
diff --git a/crates/renderer/src/overlay/duel.rs b/crates/renderer/src/overlay/duel.rs
new file mode 100644
index 0000000..4f90062
--- /dev/null
+++ b/crates/renderer/src/overlay/duel.rs
@@ -0,0 +1,158 @@
+use teleia::*;
+
+use crate::overlay;
+use crate::overlay::tcg;
+
+use std::{collections::VecDeque, io::Read};
+use byteorder::{LE, ReadBytesExt};
+
+const DUEL_DURATION: u64 = 5 * 60;
+const FLIP_START: u64 = 60;
+const FLIP_END: u64 = 90;
+
+fn read_length_prefixed(r: &mut impl Read) -> Erm<Vec<u8>> {
+    let len = r.read_u32::<LE>()?;
+    let mut bytes = vec![0; len as usize];
+    r.read_exact(&mut bytes)?;
+    Ok(bytes)
+}
+
+fn extract_meta(png: &[u8]) -> Erm<Option<tcg::Card>> {
+    let cursor = std::io::Cursor::new(png);
+    let decoder = png::Decoder::new(cursor);
+    let mut reader = decoder.read_info()?;
+    let mut buf = vec![0; reader.output_buffer_size().unwrap()];
+    while let Ok(f) = reader.next_frame(&mut buf) {}
+    reader.finish()?;
+    for tc in reader.info().uncompressed_latin1_text.iter() {
+        if tc.keyword == "lcolonqtcg" {
+            let (sig, meta) = if let Some(suffix) = tc.text.strip_prefix("+SIGNED+") {
+                suffix.split_once("+").unwrap_or(("", suffix))
+            } else {
+                ("", &*tc.text)
+            };
+            return Ok(Some(tcg::Card::parse(meta)?));
+        }
+    }
+    Ok(None)
+}
+
+fn render_card_texture(
+    ctx: &context::Context, st: &state::State,
+    ost: &overlay::State,
+    t: &texture::Texture,
+    pos: Mat4
+) {
+    st.bind_3d(ctx, &ost.assets.shader_tcg_screen);
+    ost.assets.shader_tcg_screen.set_i32(ctx, "texture_front", 0);
+    ost.assets.shader_tcg_screen.set_i32(ctx, "texture_back", 1);
+    t.bind(ctx);
+    ost.assets.texture_cardback.bind_index(ctx, 1);
+    ost.assets.shader_tcg_screen.set_position_3d(ctx, st, &pos);
+    st.mesh_square.render(ctx);
+}
+
+pub struct Duel {
+    duelist1: String,
+    duelist2: String,
+    png1: Vec<u8>,
+    png2: Vec<u8>,
+    meta1: Option<tcg::Card>,
+    meta2: Option<tcg::Card>,
+}
+
+pub struct Overlay {
+    current: Option<(Duel, u64)>,
+    queue: VecDeque<Duel>,
+    card1: texture::Texture,
+    card2: texture::Texture,
+}
+impl Overlay {
+    pub fn new(ctx: &context::Context) -> Self {
+        Self {
+            current: None,
+            queue: VecDeque::new(),
+            card1: texture::Texture::new_empty(ctx),
+            card2: texture::Texture::new_empty(ctx),
+        }
+    }
+}
+impl overlay::Overlay for Overlay {
+    fn handle_binary(&mut self, ctx: &context::Context, st: &mut state::State, ost: &mut overlay::State, msg: &net::fig::BinaryMessage) -> Erm<()> {
+        #[allow(clippy::single_match)]
+        match &*msg.event {
+            b"overlay tcg duel" => {
+                let mut reader = std::io::Cursor::new(&msg.data);
+                let duelist1 = String::from_utf8(read_length_prefixed(&mut reader)?)?;
+                let duelist2 = String::from_utf8(read_length_prefixed(&mut reader)?)?;
+                let png1 = read_length_prefixed(&mut reader)?;
+                let png2 = read_length_prefixed(&mut reader)?;
+                let meta1 = extract_meta(&png1)?;
+                let meta2 = extract_meta(&png2)?;
+                self.queue.push_back(Duel { duelist1, duelist2, png1, png2, meta1, meta2 });
+            },
+            _ => {},
+        }
+        Ok(())
+    }
+    fn update(&mut self, ctx: &context::Context, st: &mut state::State, ost: &mut overlay::State) -> Erm<()> {
+        if let Some((_, start)) = &self.current {
+            let elapsed = st.tick - start;
+            if elapsed > DUEL_DURATION {
+                self.current = None;
+            }
+        } else if let Some(d) = self.queue.pop_front() {
+            self.card1.upload(ctx, &d.png1);
+            self.card2.upload(ctx, &d.png2);
+            self.current = Some((d, st.tick));
+        }
+        Ok(())
+    }
+    fn render(&mut self, ctx: &context::Context, st: &mut state::State, ost: &mut overlay::State) -> Erm<()> {
+        if let Some((d, start)) = &self.current {
+            let elapsed = st.tick - start;
+            let card_scale = glam::Vec3::new(0.7111, 1.0, 1.0);
+            let card_rotation = glam::Quat::from_rotation_y(
+                if elapsed < FLIP_START { 0.0 }
+                else if elapsed < FLIP_END {
+                    utils::lerp(0.0, std::f32::consts::PI,
+                        (elapsed - FLIP_START) as f32 / (FLIP_END - FLIP_START) as f32
+                    )
+                }
+                else { std::f32::consts::PI }
+            );
+            render_card_texture(ctx, st, ost, &self.card1,
+                glam::Mat4::from_scale_rotation_translation(
+                    card_scale,
+                    card_rotation,
+                    glam::Vec3::new(3.0, 1.9, -8.0)
+                )
+            );
+            render_card_texture(ctx, st, ost, &self.card2,
+                glam::Mat4::from_scale_rotation_translation(
+                    card_scale,
+                    card_rotation,
+                    glam::Vec3::new(-3.0, 1.9, -8.0)
+                )
+            );
+            let mut names_pos = glam::Vec2::new(0.0, 80.0);
+            let names = format!("{} vs {}", d.duelist1, d.duelist2);
+            let scale = 8.0;
+            let width = names.len() as f32 * st.font_default.char_width as f32 * scale;
+            names_pos += glam::Vec2::new(
+                st.render_dims.x / 2.0 - width / 2.0,
+                0.0,
+            );
+            st.font_default.render_text_at(ctx, st,
+                names_pos,
+                &names,
+                font::BitmapParams {
+                    color: &[glam::Vec4::new(1.0, 1.0, 1.0, 1.0)],
+                    scale: glam::Vec2::new(scale, scale),
+                    offset: glam::Vec2::ZERO,
+                },
+            );
+        }
+        Ok(())
+    }
+}