diff options
Diffstat (limited to 'src/game/world/trace.cpp')
| -rw-r--r-- | src/game/world/trace.cpp | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/src/game/world/trace.cpp b/src/game/world/trace.cpp index 61e3da4..d962ba3 100644 --- a/src/game/world/trace.cpp +++ b/src/game/world/trace.cpp @@ -190,9 +190,10 @@ inline U8 point_in_inflated_poly( for( U32 i = 0; i < c; ++i ) { VEC3 a = face->verts.data[i].pos; VEC3 b = face->verts.data[(i+1)%c].pos; - VEC3 in = vec_cross( norm, b - a ); + VEC3 e = b - a; + VEC3 in = vec_cross( norm, e ); F32 len = vec_len( in ); - if( len <= 0.00001f ) continue; + if( len <= 0.0001f ) continue; in *= (1.0f/ len); if( vec_dot( center - a, in ) < 0.0f ) in = in * -1.0f; @@ -201,6 +202,21 @@ inline U8 point_in_inflated_poly( F32 expand = aabb_support_radius( hull, in ); if( dist < -( expand - BSP_EDGE_TOLERANCE ) ) return 0; + + U8 isaxis = 0; + for( U32 i = 0; i < 3; ++i ) { + if( norm == vec3_axis[i] || norm == (vec3_axis[i] * -1.f) ) { + isaxis = 1; break; + } + } + + // for non-axis-aligned faces the point of contact is infinitely thin + // todo : this isnt foolproof, check for hit direction if it comes from up/down + // just ignore this, only apply to walls + if( !isaxis ) { + if( dist < BSP_EDGE_TOLERANCE ) + return 0; + } } return 1; } @@ -218,15 +234,20 @@ U8 bsp_trace_sweep_aabb_to_face( if( face->verts.size < 3 ) return 0; - VEC3 hullh = (hull.max - hull.min) * 0.5f; - AABB fhull = { face->mins - hullh, face->maxs + hullh }; + VEC3 hullv = hull.max - hull.min; + AABB fhull = { face->mins - hullv, face->maxs + hullv }; VEC3 norm = bsp_face_get_normal( face ); F32 d = vec_dot( norm, face->verts[0].pos ); F32 radius = aabb_support_radius( hull, norm ); VEC3 dir = trace->in_end - trace->in_start; F32 s0 = vec_dot( norm, trace->in_start ) - d; - F32 ndir = vec_dot( norm, trace->in_end - trace->in_start ); + F32 ndir = vec_dot( norm, dir ); + + VEC3 dirn = vec_normalize( dir ); + F32 tdot = vec_dot( dirn, norm ); + if( tdot >= 0 ) // dont collide with rear side + return 0; if( fabsf( s0 ) <= radius + BSP_TRACE_EPSILON ) { if( aabb_contains_point( fhull, start ) && point_in_inflated_poly( start, face, hull, norm ) ) { @@ -247,7 +268,6 @@ U8 bsp_trace_sweep_aabb_to_face( F32 t_enter = (-radius - s0) / ndir; F32 t_exit = ( radius - s0) / ndir; if( t_enter > t_exit ) { F32 tmp=t_enter; t_enter=t_exit; t_exit=tmp; } - if( t_exit < 0.f - BSP_TRACE_EPSILON || t_enter > 1.f + BSP_TRACE_EPSILON ) return 0; @@ -319,9 +339,11 @@ U8 bsp_trace_sweep_aabb_to_leaf_edges( F32 along = vec_dot( step - e->v1, edir ); VEC3 proj = e->v1 + edir * m_clamp( along, 0.f, elen ); F32 dist = vec_dist( proj, step ); + + + F32 expand = aabb_support_radius( hull, n ); if( dist > BSP_TRACE_EPSILON ) { - F32 expand = aabb_support_radius( hull, vec_normalize( step - proj ) ); - if( dist < -(expand) || dist > expand ) + if( dist > expand - BSP_EDGE_TOLERANCE ) continue; } |