GameLib: Implement GameLib_SearchEntInArea

Queries the `BucketGrid` to return entities in an area.

src/GameLib.c

@@ -613,7 +613,7 @@ void GameLib_ForEachEnt(int (*func)(Entity ent)) {
 /////////////////////////////
 // GameLib_SearchEnt
 //
-// Searches throught the entities.
+// Searches through the entities.
 Entity GameLib_SearchEnt(int (*func)(Entity ent, void *d), void *d) {
 	Entity ent = NULL;
 	for (int i = 0; i < g_NumEntities; i++) {
@@ -628,6 +628,26 @@ Entity GameLib_SearchEnt(int (*func)(Entity ent, void *d), void *d) {
 	return ent;
 }
 
+/////////////////////////////
+// GameLib_SearchEntInArea
+//
+// Searches through the entities, in an area.
+Entity GameLib_SearchEntInArea(int (*func)(Entity ent, void *d), void *d, BBox area) {
+	TBucket searchBucket;
+	BucketGrid_Query(&g_BucketGrid, area, &searchBucket);
+	Entity ent = NULL;
+	for (int i = 0; i < searchBucket.count; i++) {
+		ent = searchBucket.bbox[i]->parent;
+		if (!ent) {
+			continue;
+		}
+		if (func(ent, d)) {
+			break;
+		}
+	}
+	return ent;
+}
+
 /////////////////////////////
 // GameLib_EntityCustomCheckCollision
 //

src/GameLib.h

@@ -94,9 +94,15 @@ void GameLib_ForEachEnt(int (*func)(Entity ent));
 /////////////////////////////
 // GameLib_SearchEnt
 //
-// Searches throught the entities.
+// Searches through the entities.
 Entity GameLib_SearchEnt(int (*func)(Entity ent, void *d), void *d);
 
+/////////////////////////////
+// GameLib_SearchEntInArea
+//
+// Searches through the entities, in an area.
+Entity GameLib_SearchEntInArea(int (*func)(Entity ent, void *d), void *d, BBox area);
+
 /////////////////////////////
 // GameLib_EntityCustomCheckCollision
 //