X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=rigidbody.h;h=29e8cea766b19e44abeb861740afa490cf90abd7;hb=d13f2700b1773551307685cc7c34c804ccd6d664;hp=05d2db1100fe78310d8a548691d99138c90a9d3a;hpb=4a883ac1b2506032f9dddab342712de46f2ca734;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/rigidbody.h b/rigidbody.h
index 05d2db1..29e8cea 100644
--- a/rigidbody.h
+++ b/rigidbody.h
@@ -338,17 +338,12 @@ static void rb_init( rigidbody *rb )
       v3f dims;
       v3_sub( rb->bbx[1], rb->bbx[0], dims );
       volume = dims[0]*dims[1]*dims[2];
-      
-      if( !rb->is_world )
-         vg_info( "Box volume: %f\n", volume );
    }
    else if( rb->type == k_rb_shape_sphere )
    {
       volume = sphere_volume( rb->inf.sphere.radius );
       v3_fill( rb->bbx[0], -rb->inf.sphere.radius );
       v3_fill( rb->bbx[1],  rb->inf.sphere.radius );
-
-      vg_info( "Sphere volume: %f\n", volume );
    }
    else if( rb->type == k_rb_shape_capsule )
    {
@@ -1860,6 +1855,23 @@ static void rb_constraint_position( rigidbody *ra, v3f lca,
    }
 }
 
+/* 
+ * Effectors
+ */
+
+static void rb_effect_simple_bouyency( rigidbody *ra, v4f plane, 
+                                       float amt, float drag )
+{
+   /* float */
+   float depth  = v3_dot( plane, ra->co ) - plane[3],
+         lambda = vg_clampf( -depth, 0.0f, 1.0f ) * amt;
+
+   v3_muladds( ra->v, plane, lambda * ktimestep, ra->v );
+
+   if( depth < 0.0f )
+      v3_muls( ra->v, 1.0f-(drag*ktimestep), ra->v );
+}
+
 /*
  * -----------------------------------------------------------------------------
  * BVH implementation, this is ONLY for static rigidbodies, its to slow for