port: make sun and light glares use LOS checks

this partially fixes them, but there are still problems to iron out

src/include/game/game_13c510.h

@@ -13,5 +13,8 @@ u8 func0f13d3c4(u8 arg0, u8 arg1);
 Gfx *artifactsConfigureForGlares(Gfx *gdl);
 Gfx *artifactsUnconfigureForGlares(Gfx *gdl);
 Gfx *artifactsRenderGlaresForRoom(Gfx *gdl, s32 roomnum);
+#ifndef PLATFORM_N64
+bool artifactTestLos(struct coord *spec, struct coord *roompos);
+#endif
 
 #endif

src/include/lib/collision.h

@@ -67,5 +67,6 @@ bool cd0002ded8(struct coord *arg0, struct coord *arg1, struct prop *prop);
 s32 cdTestBlockOverlapsAnyProp(struct geoblock *geo, RoomNum *rooms, u32 types);
 s32 cd0002f02c(struct geoblock *block, RoomNum *rooms, s32 types);
 bool cdIsNearlyInSight(struct coord *viewpos, RoomNum *rooms, struct coord *targetpos, f32 distance, s32 arg4);
+bool cdTestAToB(struct coord *pos, struct coord *coord2, RoomNum *rooms, u32 types, u16 geoflags, bool checkvertical, s32 arg6, f32 ymax, f32 ymin);
 
 #endif