Dowsing (#17)

* Dowsing.

* d_t_dowsing

* d_t_holy_water OK

src/REL/d/t/d_t_map_inst.cpp

@@ -4,5 +4,17 @@ SPECIAL_ACTOR_PROFILE(TAG_MAP_INST, dTgMapInst_c, fProfile::TAG_MAP_INST, 0x021d
 
 int dTgMapInst_c::create() {
     field_0xfc = params & 0xff;
+    return SUCCEEDED;
+}
+
+int dTgMapInst_c::doDelete() {
+    return 1;
+}
+
+int dTgMapInst_c::actorExecute() {
+    return 1;
+}
+
+int dTgMapInst_c::draw() {
     return 1;
 }