From 775b0148cec4329a6abb19d03220dc1d8a8b68c3 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Tue, 16 Jul 2024 23:38:46 +0200
Subject: rename pixel client

---
 pixel-client/src/tilemap.rs | 117 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 pixel-client/src/tilemap.rs

(limited to 'pixel-client/src/tilemap.rs')

diff --git a/pixel-client/src/tilemap.rs b/pixel-client/src/tilemap.rs
new file mode 100644
index 00000000..768f79ba
--- /dev/null
+++ b/pixel-client/src/tilemap.rs
@@ -0,0 +1,117 @@
+/*
+    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::IVec2, TileIndex};
+use log::warn;
+use sdl2::rect::Rect;
+use std::collections::{HashMap, HashSet};
+
+use crate::render::{
+    sprite::{Sprite, SpriteDraw},
+    SpriteRenderer,
+};
+
+#[derive(Default)]
+pub struct Tilemap {
+    connect_group_by_tile: Vec<Option<usize>>,
+    connect_members_by_group: Vec<HashSet<Option<TileIndex>>>,
+    tile_srcs: Vec<[Rect; 16]>,
+    tiles: HashMap<IVec2, SpriteDraw>,
+}
+
+impl Tilemap {
+    pub fn init(&mut self, tile_names: &[String], sprite_rects: &HashMap<String, Rect>) {
+        let tile_index = tile_names
+            .iter()
+            .enumerate()
+            .map(|(t, i)| (i.to_string(), t))
+            .collect::<HashMap<_, _>>();
+        self.connect_group_by_tile = vec![None; tile_names.len()];
+        self.connect_members_by_group = include_str!("../assets/connect.csv")
+            .lines()
+            .enumerate()
+            .map(|(gid, line)| {
+                line.split(",")
+                    .flat_map(|tile| tile_index.get(tile).copied())
+                    .map(|ti| {
+                        self.connect_group_by_tile[ti] = Some(gid);
+                        Some(TileIndex(ti))
+                    })
+                    .collect::<HashSet<_>>()
+            })
+            .collect::<Vec<_>>();
+
+        self.tile_srcs = tile_names
+            .iter()
+            .map(|name| {
+                let fallback = sprite_rects
+                    .get(&format!("{name}+a"))
+                    .copied()
+                    .unwrap_or_else(|| {
+                        warn!("no sprite for tile {name:?}");
+                        Rect::new(0, 0, 0, 0)
+                    });
+
+                [
+                    sprite_rects.get(&format!("{name}+")),
+                    sprite_rects.get(&format!("{name}+w")),
+                    sprite_rects.get(&format!("{name}+e")),
+                    sprite_rects.get(&format!("{name}+we")),
+                    sprite_rects.get(&format!("{name}+n")),
+                    sprite_rects.get(&format!("{name}+wn")),
+                    sprite_rects.get(&format!("{name}+en")),
+                    sprite_rects.get(&format!("{name}+wen")),
+                    sprite_rects.get(&format!("{name}+s")),
+                    sprite_rects.get(&format!("{name}+ws")),
+                    sprite_rects.get(&format!("{name}+es")),
+                    sprite_rects.get(&format!("{name}+wes")),
+                    sprite_rects.get(&format!("{name}+ns")),
+                    sprite_rects.get(&format!("{name}+wns")),
+                    sprite_rects.get(&format!("{name}+ens")),
+                    sprite_rects.get(&format!("{name}+wens")),
+                ]
+                .map(|e| e.copied().unwrap_or(fallback))
+            })
+            .collect();
+    }
+
+    pub fn set(&mut self, pos: IVec2, tile: Option<TileIndex>, neighbors: [Option<TileIndex>; 4]) {
+        let Some(tile) = tile else {
+            self.tiles.remove(&pos);
+            return;
+        };
+
+        let mut idx = 0;
+        if let Some(gid) = self.connect_group_by_tile[tile.0] {
+            let cgroup = &self.connect_members_by_group[gid];
+            idx |= 0b0100 * (cgroup.contains(&neighbors[0])) as usize;
+            idx |= 0b0001 * (cgroup.contains(&neighbors[1])) as usize;
+            idx |= 0b1000 * (cgroup.contains(&neighbors[2])) as usize;
+            idx |= 0b0010 * (cgroup.contains(&neighbors[3])) as usize;
+        }
+
+        let src = self.tile_srcs[tile.0][idx];
+        self.tiles
+            .insert(pos, Sprite::new_tile(src).at(pos.as_vec2()));
+    }
+
+    pub fn draw(&self, ctx: &mut SpriteRenderer) {
+        for &sprite in self.tiles.values() {
+            ctx.draw_world(sprite);
+        }
+    }
+}
-- 
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