alias model: fix tracebox

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9081 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/model_alias.c b/model_alias.c
index 77bbeb59b348bc6e0443b0d90f867c47db6526ab..3bf86ea937a2d17d8ace793da91f00c68e03f05f 100644 (file)
--- a/model_alias.c
+++ b/model_alias.c
@@ -626,6 +626,7 @@ static void Mod_Alias_MorphMesh_CompileFrames(void)
 static void Mod_MDLMD2MD3_TraceBox(dp_model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 {
        int i;
+       vec3_t shiftstart, shiftend;
        float segmentmins[3], segmentmaxs[3];
        frameblend_t frameblend[MAX_FRAMEBLENDS];
        msurface_t *surface;
@@ -645,19 +646,21 @@ static void Mod_MDLMD2MD3_TraceBox(dp_model_t *model, int frame, trace_t *trace,
                maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
                vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
        }
-       if (VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
+       if (VectorCompare(boxmins, boxmaxs))
        {
                // line trace
-               segmentmins[0] = min(start[0], end[0]) - 1;
-               segmentmins[1] = min(start[1], end[1]) - 1;
-               segmentmins[2] = min(start[2], end[2]) - 1;
-               segmentmaxs[0] = max(start[0], end[0]) + 1;
-               segmentmaxs[1] = max(start[1], end[1]) + 1;
-               segmentmaxs[2] = max(start[2], end[2]) + 1;
+               VectorAdd(start, boxmins, shiftstart);
+               VectorAdd(shiftend, boxmins, shiftend);
+               segmentmins[0] = min(shiftstart[0], shiftend[0]) - 1;
+               segmentmins[1] = min(shiftstart[1], shiftend[1]) - 1;
+               segmentmins[2] = min(shiftstart[2], shiftend[2]) - 1;
+               segmentmaxs[0] = max(shiftstart[0], shiftend[0]) + 1;
+               segmentmaxs[1] = max(shiftstart[1], shiftend[1]) + 1;
+               segmentmaxs[2] = max(shiftstart[2], shiftend[2]) + 1;
                for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
                {
                        model->AnimateVertices(model, frameblend, vertex3f, NULL, NULL, NULL);
-                       Collision_TraceLineTriangleMeshFloat(trace, start, end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, 0, NULL, SUPERCONTENTS_SOLID | (surface->texture->basematerialflags & MATERIALFLAGMASK_TRANSLUCENT ? 0 : SUPERCONTENTS_OPAQUE), 0, surface->texture, segmentmins, segmentmaxs);
+                       Collision_TraceLineTriangleMeshFloat(trace, shiftstart, shiftend, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, 0, NULL, SUPERCONTENTS_SOLID | (surface->texture->basematerialflags & MATERIALFLAGMASK_TRANSLUCENT ? 0 : SUPERCONTENTS_OPAQUE), 0, surface->texture, segmentmins, segmentmaxs);
                }
        }
        else