added getsurfaceclippedpoint builtin

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2329 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/pr_cmds.c b/pr_cmds.c
index 2c1c8ce600e6b97fb58c27893dbe549162d755f3..bfba985bbfed81029326a231d4b38b42a6c57dc8 100644 (file)
--- a/pr_cmds.c
+++ b/pr_cmds.c
@@ -2563,7 +2563,7 @@ void PF_getsurfacetexture(void)
                return;
        G_INT(OFS_RETURN) = surf->texinfo->texture->name - pr_strings;
 }
-//PF_getsurfacenearpoint, // #438 void(entity e, vector p) getsurfacenearpoint = #438;
+//PF_getsurfacenearpoint, // #438 float(entity e, vector p) getsurfacenearpoint = #438;
 void PF_getsurfacenearpoint(void)
 {
        int surfnum, best, modelindex;
@@ -2609,6 +2609,24 @@ void PF_getsurfacenearpoint(void)
        }
        G_FLOAT(OFS_RETURN) = best;
 }
+//PF_getsurfaceclippedpoint, // #439 vector(entity e, float s, vector p) getsurfaceclippedpoint = #439;
+void PF_getsurfaceclippedpoint(void)
+{
+       edict_t *ed;
+       msurface_t *surf;
+       vec3_t p, out;
+       VectorClear(G_VECTOR(OFS_RETURN));
+       ed = G_EDICT(OFS_PARM0);
+       if (!ed || ed->free)
+               return;
+       if (!(surf = getsurface(ed, G_FLOAT(OFS_PARM1))))
+               return;
+       // FIXME: implement rotation/scaling
+       VectorSubtract(G_VECTOR(OFS_PARM2), ed->v.origin, p);
+       clippointtosurface(surf, p, out);
+       // FIXME: implement rotation/scaling
+       VectorAdd(out, ed->v.origin, G_VECTOR(OFS_RETURN));
+}
 
 void PF_Fixme (void)
 {
@@ -2773,6 +2791,7 @@ PF_getsurfacepoint,     // #435 vector(entity e, float s, float n) getsurfacepoi
 PF_getsurfacenormal,    // #436 vector(entity e, float s) getsurfacenormal = #436;
 PF_getsurfacetexture,   // #437 string(entity e, float s) getsurfacetexture = #437;
 PF_getsurfacenearpoint, // #438 float(entity e, vector p) getsurfacenearpoint = #438;
+PF_getsurfaceclippedpoint,// #439 vector(entity e, float s, vector p) getsurfaceclippedpoint = #439;
 };
 
 builtin_t *pr_builtins = pr_builtin;