From 46313b4880647e120b342222b8c89ac25b239b38 Mon Sep 17 00:00:00 2001
From: Mark <mark@betalupi.com>
Date: Fri, 5 Jan 2024 13:25:44 -0800
Subject: [PATCH] Generate collision indices

---
 content/ship.toml               | 28 +---------------------------
 crates/content/src/part/ship.rs | 25 ++++++++++++++++---------
 2 files changed, 17 insertions(+), 36 deletions(-)

diff --git a/content/ship.toml b/content/ship.toml
index 986c34e..fcb43c1 100644
--- a/content/ship.toml
+++ b/content/ship.toml
@@ -6,7 +6,6 @@ hull = 200
 linear_drag = 0.2
 angular_drag = 0.2
 
-
 space.outfit = 200
 space.engine = 50
 space.weapon = 50
@@ -14,7 +13,7 @@ space.weapon = 50
 engines = [{ x = 0.0, y = -1.05, size = 50.0 }]
 guns = [{ x = 0.0, y = 1 }, { x = 0.1, y = 0.80 }, { x = -0.1, y = 0.80 }]
 
-collision.points = [
+collision = [
 	#[rustfmt:skip],
 	[0.53921, 1.0000],
 	[0.53921, 0.29343],
@@ -38,28 +37,3 @@ collision.points = [
 	[-0.53921, 0.29343],
 	[-0.53921, 1.0000],
 ]
-
-# TODO: generate this automatically
-collision.indices = [
-	#[rustfmt:skip],
-	[0, 1],
-	[1, 2],
-	[2, 3],
-	[3, 4],
-	[4, 5],
-	[5, 6],
-	[6, 7],
-	[7, 8],
-	[8, 9],
-	[9, 10],
-	[10, 11],
-	[11, 12],
-	[12, 13],
-	[13, 14],
-	[14, 15],
-	[15, 16],
-	[16, 17],
-	[17, 18],
-	[18, 19],
-	[19, 0],
-]
diff --git a/crates/content/src/part/ship.rs b/crates/content/src/part/ship.rs
index 412dd7a..87930a4 100644
--- a/crates/content/src/part/ship.rs
+++ b/crates/content/src/part/ship.rs
@@ -21,18 +21,12 @@ pub(crate) mod syntax {
 		pub guns: Vec<Gun>,
 		pub hull: f32,
 		pub mass: f32,
-		pub collision: Collision,
+		pub collision: Vec<[f32; 2]>,
 		pub angular_drag: f32,
 		pub linear_drag: f32,
 		pub space: outfitspace::syntax::OutfitSpace,
 	}
 
-	#[derive(Debug, Deserialize)]
-	pub struct Collision {
-		pub points: Vec<[f32; 2]>,
-		pub indices: Vec<[u32; 2]>,
-	}
-
 	#[derive(Debug, Deserialize)]
 	pub struct Engine {
 		pub x: f32,
@@ -153,6 +147,7 @@ impl crate::Build for Ship {
 				linear_drag: ship.linear_drag,
 				size,
 				hull: ship.hull,
+
 				engines: ship
 					.engines
 					.iter()
@@ -164,6 +159,7 @@ impl crate::Build for Ship {
 						size: e.size,
 					})
 					.collect(),
+
 				guns: ship
 					.guns
 					.iter()
@@ -174,11 +170,22 @@ impl crate::Build for Ship {
 						},
 					})
 					.collect(),
+
 				collision: Collision {
-					indices: ship.collision.indices,
+					indices: (0..ship.collision.len())
+						.map(|x| {
+							// Auto-generate mesh lines:
+							// [ [0, 1], [1, 2], ..., [n, 0] ]
+							let next = if x == ship.collision.len() - 1 {
+								0
+							} else {
+								x + 1
+							};
+							[x as u32, next as u32]
+						})
+						.collect(),
 					points: ship
 						.collision
-						.points
 						.iter()
 						.map(|x| point![x[0] * (size / 2.0) * aspect, x[1] * size / 2.0])
 						.collect(),