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/*
Hurry Curry! - a game about cooking
Copyright (C) 2025 Hurry Curry! Contributors
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 anyhow::Result;
use hurrycurry_protocol::{
Gamedata, Message,
book::{Diagram, DiagramNode, NodeStyle},
glam::Vec2,
};
use std::fmt::Write;
const SIZE: f32 = 64.;
const HSIZE: f32 = SIZE / 2.;
pub fn diagram_svg(data: &Gamedata, diagram: &Diagram) -> Result<String> {
let mut out = String::new();
let (vb_min, vb_max) = diagram
.nodes
.iter()
.map(|n| (n.position, n.position))
.reduce(|(xa, xb), (ya, yb)| (xa.min(ya), xb.max(yb)))
.unwrap();
writeln!(
out,
r#"<svg xmlns="http://www.w3.org/2000/svg" viewBox="{} {} {} {}" width="{}" height="{}">"#,
vb_min.x - HSIZE,
vb_min.y - HSIZE,
vb_max.x + HSIZE,
vb_max.y + HSIZE,
vb_max.x - vb_min.x + SIZE,
vb_max.y - vb_min.y + SIZE,
)?;
for node in &diagram.nodes {
match node.label {
Message::Translation { .. } => {}
Message::Text(_) => {}
Message::Item(item_index) => {
image_node(
&mut out,
node,
format!("items/{}.png", data.item_name(item_index)),
)?;
}
Message::Tile(tile_index) => {
image_node(
&mut out,
node,
format!("tiles/{}.png", data.tile_name(tile_index)),
)?;
}
}
}
for edge in &diagram.edges {
let src_node = &diagram.nodes[edge.src];
let dst_node = &diagram.nodes[edge.dst];
let src = node_edge_connect_pos(src_node, dst_node);
let mut dst = node_edge_connect_pos(dst_node, src_node);
let dir = (src - dst).normalize_or_zero();
let tip0 = dst;
let tip1 = dst + (dir + dir.perp() * 0.5) * 10.;
let tip2 = dst + (dir + dir.perp() * -0.5) * 10.;
dst += dir * 5.; // prevent miter line cap from peeking out
// line path
writeln!(
out,
r#"<path fill="none" stroke="black" stroke-width="2" d="M{} {} L{} {}" />"#,
src.x, src.y, dst.x, dst.y,
)?;
// tip path
writeln!(
out,
r#"<path fill="black" stroke="none" d="M{} {} L{} {} L{} {} Z" />"#,
tip0.x, tip0.y, tip1.x, tip1.y, tip2.x, tip2.y
)?;
}
writeln!(out, "</svg>")?;
Ok(out)
}
fn node_edge_connect_pos(src: &DiagramNode, dst: &DiagramNode) -> Vec2 {
let dir = (dst.position - src.position).normalize_or_zero();
if matches!(
src.style,
NodeStyle::FinalProduct | NodeStyle::IntermediateProduct
) {
src.position + dir * HSIZE // circle
} else {
src.position + dir / dir.y.abs() * HSIZE // square (only +Y and -Y sides)
}
}
pub(crate) fn node_color(node: &DiagramNode) -> &'static str {
match node.style {
NodeStyle::FinalProduct => "#555",
NodeStyle::IntermediateProduct => "#333",
NodeStyle::ProcessActive => "#47c42b",
NodeStyle::ProcessPassive => "#c4a32b",
NodeStyle::ProcessInstant => "#5452d8",
}
}
fn image_node(out: &mut String, node: &DiagramNode, path: String) -> Result<()> {
if matches!(
node.style,
NodeStyle::FinalProduct | NodeStyle::IntermediateProduct
) {
writeln!(
out,
r#"<circle cx="{}" cy="{}" r="{}" stroke="none" fill="{}" />"#,
node.position.x,
node.position.y,
HSIZE,
node_color(node)
)?;
} else {
writeln!(
out,
r#"<rect x="{}" y="{}" width="{SIZE}" height="{SIZE}" stroke="none" fill="{}" />"#,
node.position.x - HSIZE,
node.position.y - HSIZE,
node_color(node)
)?;
}
writeln!(
out,
r#"<image href="{path}" x="{}" y="{}" width="{SIZE}" height="{SIZE}" />"#,
node.position.x - HSIZE,
node.position.y - HSIZE,
)?;
Ok(())
}
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