Add Coal Cents economy

CoalGov/src/main/java/com/librewiki/coalgov/util/CoalMoney.java

@@ -0,0 +1,69 @@
+package com.librewiki.coalgov.util;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public final class CoalMoney {
+    public static final long CENTS_PER_COAL = 100L;
+
+    private CoalMoney() {
+    }
+
+    public static long fromCoal(double coal) {
+        return Math.round(coal * CENTS_PER_COAL);
+    }
+
+    public static long fromCoalConfig(double coal) {
+        return Math.max(0L, fromCoal(coal));
+    }
+
+    public static String format(long cents) {
+        boolean negative = cents < 0L;
+        long absolute = Math.abs(cents);
+        long coal = absolute / CENTS_PER_COAL;
+        long coalCents = absolute % CENTS_PER_COAL;
+        String prefix = negative ? "-" : "";
+        if (coal > 0L && coalCents > 0L) {
+            return prefix + coal + " coal " + coalCents + "cc";
+        }
+        if (coal > 0L) {
+            return prefix + coal + " coal";
+        }
+        return prefix + coalCents + "cc";
+    }
+
+    public static long parsePositive(String raw) {
+        long amount = parse(raw);
+        return amount > 0L ? amount : -1L;
+    }
+
+    public static long parse(String raw) {
+        if (raw == null) {
+            return -1L;
+        }
+        String normalized = raw.trim().toLowerCase();
+        if (normalized.isEmpty() || normalized.startsWith("-")) {
+            return -1L;
+        }
+        try {
+            if (normalized.endsWith("cc")) {
+                return Long.parseLong(normalized.substring(0, normalized.length() - 2));
+            }
+            if (normalized.endsWith("c")) {
+                return parseDecimalCoal(normalized.substring(0, normalized.length() - 1));
+            }
+            if (normalized.endsWith("coal")) {
+                return parseDecimalCoal(normalized.substring(0, normalized.length() - 4));
+            }
+            return parseDecimalCoal(normalized);
+        } catch (ArithmeticException | NumberFormatException exception) {
+            return -1L;
+        }
+    }
+
+    private static long parseDecimalCoal(String raw) {
+        BigDecimal coal = new BigDecimal(raw.trim());
+        BigDecimal cents = coal.multiply(BigDecimal.valueOf(CENTS_PER_COAL));
+        return cents.setScale(0, RoundingMode.HALF_UP).longValueExact();
+    }
+}

CoalGov/src/main/java/com/librewiki/coalgov/util/Cuboid2D.java

@@ -0,0 +1,30 @@
+package com.librewiki.coalgov.util;
+
+public record Cuboid2D(String world, int x1, int z1, int x2, int z2) {
+    public Cuboid2D {
+        int minX = Math.min(x1, x2);
+        int maxX = Math.max(x1, x2);
+        int minZ = Math.min(z1, z2);
+        int maxZ = Math.max(z1, z2);
+        x1 = minX;
+        x2 = maxX;
+        z1 = minZ;
+        z2 = maxZ;
+    }
+
+    public boolean contains(String worldName, int x, int z) {
+        return world.equals(worldName) && x >= x1 && x <= x2 && z >= z1 && z <= z2;
+    }
+
+    public boolean overlaps(Cuboid2D other) {
+        return world.equals(other.world)
+                && x1 <= other.x2
+                && x2 >= other.x1
+                && z1 <= other.z2
+                && z2 >= other.z1;
+    }
+
+    public long area() {
+        return (long) (x2 - x1 + 1) * (z2 - z1 + 1);
+    }
+}

CoalGov/src/main/java/com/librewiki/coalgov/util/Messages.java

@@ -0,0 +1,29 @@
+package com.librewiki.coalgov.util;
+
+import org.bukkit.ChatColor;
+import org.bukkit.configuration.file.FileConfiguration;
+
+public final class Messages {
+    private final FileConfiguration config;
+
+    public Messages(FileConfiguration config) {
+        this.config = config;
+    }
+
+    public String prefix() {
+        return color(config.getString("messages.prefix", "&8[&6CoalGov&8]&r "));
+    }
+
+    public String text(String message) {
+        return prefix() + color(message);
+    }
+
+    public String raw(String message) {
+        return color(message);
+    }
+
+    @SuppressWarnings("deprecation")
+    private String color(String message) {
+        return ChatColor.translateAlternateColorCodes('&', message);
+    }
+}