render connected tiles

1 files changed, 152 insertions, 0 deletions

diff --git a/light-client/src/sprite_renderer.rs b/light-client/src/sprite_renderer.rs
new file mode 100644
index 00000000..64eef8f6
--- /dev/null
+++ b/light-client/src/sprite_renderer.rs
@@ -0,0 +1,152 @@
+/*
+    Hurry Curry! - a game about cooking
+    Copyright 2024 metamuffin
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, version 3 of the License only.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+use hurrycurry_protocol::glam::Vec2;
+use sdl2::{
+    pixels::PixelFormatEnum,
+    rect::{FRect, Rect},
+    render::{BlendMode, Canvas, Texture, TextureAccess, TextureCreator},
+    video::{Window, WindowContext},
+};
+use std::collections::HashMap;
+
+pub struct SpriteRenderer<'a> {
+    metadata: HashMap<String, Rect>,
+    texture: Texture<'a>,
+
+    view_scale: Vec2,
+    view_offset: Vec2,
+
+    sprites: Vec<SpriteDraw>,
+}
+
+pub struct SpriteDraw {
+    z_order: i32,
+    src: Rect,
+    dst: FRect,
+}
+
+impl<'a> SpriteRenderer<'a> {
+    pub fn init(texture_creator: &'a TextureCreator<WindowContext>) -> Self {
+        let palette = include_str!("../assets/palette.csv")
+            .split('\n')
+            .filter(|l| !l.is_empty())
+            .map(|s| {
+                let mut toks = s.split(",");
+                (
+                    toks.next().unwrap().chars().next().unwrap(),
+                    [
+                        toks.next().unwrap().parse::<u8>().unwrap(),
+                        toks.next().unwrap().parse::<u8>().unwrap(),
+                        toks.next().unwrap().parse::<u8>().unwrap(),
+                        toks.next().unwrap().parse::<u8>().unwrap(),
+                    ],
+                )
+            })
+            .collect::<HashMap<_, _>>();
+
+        let mut texels = vec![255; 1024 * 1024 * 4];
+
+        for (y, line) in include_str!("../assets/atlas.ta").lines().enumerate() {
+            if line.is_empty() {
+                continue;
+            }
+            for (x, char) in line.chars().enumerate() {
+                let color = palette.get(&char).unwrap();
+                texels[(y * 1024 + x) * 4 + 0] = color[3];
+                texels[(y * 1024 + x) * 4 + 1] = color[2];
+                texels[(y * 1024 + x) * 4 + 2] = color[1];
+                texels[(y * 1024 + x) * 4 + 3] = color[0];
+            }
+        }
+
+        let mut texture = texture_creator
+            .create_texture(
+                Some(PixelFormatEnum::RGBA8888),
+                TextureAccess::Streaming,
+                1024,
+                1024,
+            )
+            .unwrap();
+
+        texture.update(None, &texels, 1024 * 4).unwrap();
+        texture.set_blend_mode(BlendMode::Blend);
+
+        let metadata = include_str!("../assets/atlas.meta.csv")
+            .lines()
+            .filter(|l| !l.is_empty())
+            .map(|l| {
+                let mut toks = l.split(",");
+                let x: i32 = toks.next().unwrap().parse().unwrap();
+                let y: i32 = toks.next().unwrap().parse().unwrap();
+                let w: u32 = toks.next().unwrap().parse().unwrap();
+                let h: u32 = toks.next().unwrap().parse().unwrap();
+                let name = toks.next().unwrap().to_string();
+                (name, Rect::new(x, y, w, h))
+            })
+            .collect::<HashMap<_, _>>();
+
+        Self {
+            texture,
+            metadata,
+            sprites: vec![],
+            view_offset: Vec2::ZERO,
+            view_scale: Vec2::splat(64.),
+        }
+    }
+
+    pub fn metadata(&self) -> &HashMap<String, Rect> {
+        &self.metadata
+    }
+
+    pub fn draw(&mut self, z_order: i32, src: Rect, dst: FRect) {
+        self.sprites.push(SpriteDraw {
+            z_order,
+            src,
+            dst: FRect::new(
+                (dst.x + self.view_offset.x) * self.view_scale.x,
+                (dst.y + self.view_offset.y) * self.view_scale.y,
+                dst.w * self.view_scale.x,
+                dst.h * self.view_scale.y,
+            ),
+        })
+    }
+
+    pub fn submit(&mut self, canvas: &mut Canvas<Window>) {
+        self.sprites.sort();
+        for SpriteDraw { src, dst, .. } in self.sprites.drain(..) {
+            canvas.copy_f(&self.texture, src, dst).unwrap();
+        }
+    }
+}
+
+impl Ord for SpriteDraw {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.z_order.cmp(&other.z_order)
+    }
+}
+impl PartialOrd for SpriteDraw {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(&other))
+    }
+}
+impl Eq for SpriteDraw {}
+impl PartialEq for SpriteDraw {
+    fn eq(&self, other: &Self) -> bool {
+        self.z_order == other.z_order && self.src == other.src && self.dst == other.dst
+    }
+}