1 files changed, 17 insertions, 2 deletions
diff --git a/core/src/main/java/coffee/liz/abstractionengine/grid/component/Substitution.java b/core/src/main/java/coffee/liz/abstractionengine/grid/component/Substitution.java
index 77ff4e8..9f58ff2 100644
--- a/core/src/main/java/coffee/liz/abstractionengine/grid/component/Substitution.java
+++ b/core/src/main/java/coffee/liz/abstractionengine/grid/component/Substitution.java
@@ -2,14 +2,29 @@ package coffee.liz.abstractionengine.grid.component;
 
 import coffee.liz.ecs.math.Vec2;
 import coffee.liz.ecs.model.Component;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
 
-import java.util.Map;
+import java.util.List;
 
 @RequiredArgsConstructor
+@AllArgsConstructor
 @Data
+@Builder(toBuilder = true)
 public class Substitution implements Component {
+    /**
+     * Produced terms spawn with this momentum.
+     */
     private final Vec2<Integer> spawnMomentum;
-    private final Map<String, Vec2<Integer>> termDependencies;
+
+    /**
+     * Left-to-right dependencies' grid positions to apply in order.
+     * i.e. [(0, 0), (0, 1)] would apply lambda term at (0, 0) then (0, 1) to a -> b -> a => (0, 0)
+     */
+    private final List<Vec2<Integer>> termDependencies;
+
+    @Builder.Default
+    private boolean isActive = true;
 }