[EAX_SOURCE] Fix source's occlusion and exclusion contribution

Source's oclussion and exclusion properties should be taken into account only for listener's environment (see p. 16, p. 56, pp. 62-63 and p. 64 of "EAX® 4.0 Programmer’s Guide").

1 files changed, 3 insertions, 0 deletions

diff --git a/al/auxeffectslot.h b/al/auxeffectslot.h
index bf2060fe..9b6403f4 100644
--- a/al/auxeffectslot.h
+++ b/al/auxeffectslot.h
@@ -84,6 +84,7 @@ struct ALeffectslot {
 public:
     void eax_initialize(ALCcontext& al_context, EaxFxSlotIndexValue index);
 
+    EaxFxSlotIndexValue eax_get_index() const noexcept { return eax_fx_slot_index_; }
     const EAX50FXSLOTPROPERTIES& eax_get_eax_fx_slot() const noexcept
     { return eax_; }
 
@@ -306,6 +307,8 @@ private:
     void eax4_fx_slot_set_all(const EaxCall& call);
     void eax5_fx_slot_set_all(const EaxCall& call);
 
+    bool eax_fx_slot_should_update_sources() const noexcept;
+
     // Returns `true` if all sources should be updated, or `false` otherwise.
     bool eax4_fx_slot_set(const EaxCall& call);
     // Returns `true` if all sources should be updated, or `false` otherwise.