From 0d40cefa158f6273c37d6f1eacce50ffb637a523 Mon Sep 17 00:00:00 2001
From: Justin Worthe <justin@worthe-it.co.za>
Date: Wed, 12 Sep 2018 22:22:13 +0200
Subject: Mostly implemented capsules

WIP: This is in SORE need of unit tests
---
 src/hitbox.rs | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'src/hitbox.rs')

diff --git a/src/hitbox.rs b/src/hitbox.rs
index 32f432f..75cc89b 100644
--- a/src/hitbox.rs
+++ b/src/hitbox.rs
@@ -2,7 +2,8 @@ use geometry::*;
 
 pub enum Hitbox {
     Circle(CircleHitbox),
-    Point(PointHitbox)
+    Point(PointHitbox),
+    Capsule(CapsuleHitbox)
 }
 
 pub struct CircleHitbox {
@@ -14,6 +15,11 @@ pub struct PointHitbox {
     pub pos: Vec2d
 }
 
+pub struct CapsuleHitbox {
+    pub line: LineSegment,
+    pub radius: f64        
+}
+
 impl Hitbox {
     pub fn intersect(a: &Hitbox, b: &Hitbox) -> bool {
         use self::Hitbox::*;
@@ -22,7 +28,12 @@ impl Hitbox {
             (Circle(x), Circle(y)) => circles_intersect(x, y),
             (Circle(x), Point(y)) => circle_point_intersect(x, y),
             (Point(x), Circle(y)) => circle_point_intersect(y, x),
-            (Point(x), Point(y)) => points_intersect(x, y)
+            (Point(x), Point(y)) => points_intersect(x, y),
+            (Capsule(x), Capsule(y)) => capsules_intersect(x, y),
+            (Capsule(x), Circle(y)) => capsule_circle_intersect(x, y),
+            (Circle(x), Capsule(y)) => capsule_circle_intersect(y, x),
+            (Capsule(x), Point(y)) => capsule_point_intersect(x, y),
+            (Point(x), Capsule(y)) => capsule_point_intersect(y, x),
         }
     }
 }
@@ -38,3 +49,15 @@ fn circle_point_intersect(x: &CircleHitbox, y: &PointHitbox) -> bool {
 fn points_intersect(x: &PointHitbox, y: &PointHitbox) -> bool {
     x.pos == y.pos
 }
+
+fn capsules_intersect(x: &CapsuleHitbox, y: &CapsuleHitbox) -> bool {
+    true //TODO
+}
+
+fn capsule_circle_intersect(x: &CapsuleHitbox, y: &CircleHitbox) -> bool {
+    x.line.distance(y.pos) <= x.radius + y.radius
+}
+
+fn capsule_point_intersect(x: &CapsuleHitbox, y: &PointHitbox) -> bool {
+    x.line.distance(y.pos) <= x.radius
+}
-- 
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