Improve unit recruiting

game/components.h

@@ -239,6 +239,18 @@ typedef struct Unit {
     EntityType unitType;
 } Unit;
 extern ECS_COMPONENT_DECLARE(Unit);
+#define BUILDING_MAX_RECRUIT_SLOTS 4
+typedef struct BuildingRecruitSlot {
+    EntityType entityType;
+    i32 numRecruiting;
+    f32 recruitTime;
+    f32 elapsed;
+} BuildingRecruitSlot;
+typedef struct BuildingRecruitInfo {
+    BuildingRecruitSlot slots[BUILDING_MAX_RECRUIT_SLOTS];
+    i32 numSlots;
+} BuildingRecruitInfo;
+extern ECS_COMPONENT_DECLARE(BuildingRecruitInfo);
 typedef struct Building {
     BuildingType type;
     Vec2i pos;