Implement monolith enhancement machines

src/main/java/emu/nebula/game/tower/StarTowerModifiers.java

@@ -0,0 +1,56 @@
+package emu.nebula.game.tower;
+
+import lombok.Getter;
+
+/**
+ * Data class to hold various modifiers for star tower.
+ */
+@Getter
+public class StarTowerModifiers {
+    private StarTowerGame game;
+    
+    // Strengthen machines
+    private boolean enableEndStrengthen;
+    private boolean enableShopStrengthen;
+    
+    private boolean freeStrengthen;
+    private int strengthenDiscount;
+    
+    public StarTowerModifiers(StarTowerGame game) {
+        this.game = game;
+        
+        // Strengthen machines
+        this.enableEndStrengthen = this.hasGrowthNode(10601) && game.getDifficulty() >= 2;
+        this.enableShopStrengthen = this.hasGrowthNode(20301) && game.getDifficulty() >= 4;
+        
+        this.freeStrengthen = this.hasGrowthNode(10801);
+        
+        if (this.hasGrowthNode(30402)) {
+            this.strengthenDiscount += 60;
+        } else if (this.hasGrowthNode(30102)) {
+            this.strengthenDiscount += 30;
+        }
+    }
+    
+    public boolean hasGrowthNode(int nodeId) {
+        return this.getGame().getManager().hasGrowthNode(nodeId);
+    }
+    
+    public int getStartingCoin() {
+        int gold = 0;
+        
+        if (this.hasGrowthNode(10103)) {
+            gold += 50;
+        } if (this.hasGrowthNode(10403)) {
+            gold += 100;
+        } if (this.hasGrowthNode(10702)) {
+            gold += 200;
+        }
+        
+        return gold;
+    }
+
+    public void setFreeStrengthen(boolean b) {
+        this.freeStrengthen = b;
+    }
+}