X-Git-Url: https://eleni.mutantstargoat.com/git/?p=hair;a=blobdiff_plain;f=src%2Fhair.cc;fp=src%2Fhair.cc;h=b2eb4a058f2731d3ffa216ec7dbc1f3d7000a6cb;hp=ef93f2c7b463ce462f257499a6e9a7fd44878d9f;hb=8efb44efc8830ffc5ae8eb387926f8b4fd00fb6e;hpb=c595e4a5c4d54f24af1357816a1baecfdeb7d25e

diff --git a/src/hair.cc b/src/hair.cc
index ef93f2c..b2eb4a0 100644
--- a/src/hair.cc
+++ b/src/hair.cc
@@ -187,7 +187,20 @@ void Hair::update(float dt)
 		hair[i].velocity += ((-hair[i].velocity * DAMPING) + accel) * dt;
 		Vec3 new_pos = hair[i].pos + hair[i].velocity * dt;
 
-		hair[i].pos = new_pos; //= handle_collision(new_pos);
+		/* collision detection with the head */
+		Vec3 normal = xform.upper3x3() * hair[i].spawn_dir;
+		Vec3 root = xform * hair[i].spawn_pt;
+		Vec3 dir = new_pos - root;
+		
+		normal.normalize();
+
+		/* angle that will cause the hair to be rendered inside the head */
+		float d = dot(dir, normal);
+		if(d < 0) {
+			new_pos += -d * normal;
+		}
+
+		hair[i].pos = handle_collision(new_pos);
 
 		dbg_force = force;
 	}