add ship, improve inheritance

src/Aquarium.cpp

@@ -3,6 +3,7 @@
 #include "defs.h"
 #include <algorithm>
 #include <iostream>
+#include <memory>
 #include <ncurses.h>
 
 int g_maxCells = 0;
@@ -72,6 +73,7 @@ void Aquarium::resize() {
 
   addWaterline();
   addCastle();
+  addShip();
   for (int i = 0; i < width / 15; i++)
     addSeaweed();
   for (int i = 0; i < width * (height - 9) / 350; i++)
@@ -112,10 +114,13 @@ void Aquarium::redraw() {
   }
 
   int baseFishLayer = 10;
-  for (auto it = fishes.begin(); it != fishes.end();) { // use an iterator
+  for (auto it = fishes.begin(); it != fishes.end();) {
     auto &fish = *it;
-    fish->draw(baseFishLayer +
+
+    static_cast<const Entity *>(fish.get())
+        ->draw(baseFishLayer +
                static_cast<int>(std::distance(fishes.begin(), it)));
+
     fish->update();
 
     float fx = fish->getX();
@@ -123,17 +128,22 @@ void Aquarium::redraw() {
       addBubble(fx, fish->getY());
     }
 
-    if (fx > width || fx < -30) {
-      it = fishes.erase(it); // erase and update iterator
+    if (fish->isOffScreen()) {
+      it = fishes.erase(it);
       addFish();
     } else {
-      ++it; // only increment if not erasing
+      ++it;
     }
   }
 
   waterline->draw();
   waterline->update();
 
+  static_cast<const Entity *>(ship.get())->draw(9);
+  if (ship->isOffScreen())
+    addShip();
+  ship->update();
+
   applyBackBuffer();
 }
 
@@ -151,6 +161,8 @@ void Aquarium::addCastle() { castle = std::make_unique<Castle>(); }
 
 void Aquarium::addFish() { fishes.emplace_back(std::make_unique<Fish>()); }
 
+void Aquarium::addShip() { ship = std::make_unique<Ship>(); }
+
 void Aquarium::clearBackBuffer() {
   for (auto &row : backBuffer)
     std::fill(row.begin(), row.end(), Cell());

src/Aquarium.h

@@ -3,8 +3,10 @@
 #include "Castle.h"
 #include "Fish.h"
 #include "Seaweed.h"
+#include "Ship.h"
 #include "Waterline.h"
 #include <memory>
+#include <ncurses.h>
 #include <vector>
 
 extern int g_maxCells;
@@ -67,6 +69,7 @@ private:
   std::vector<std::unique_ptr<Fish>> fishes;
   std::vector<std::unique_ptr<Bubble>> bubbles;
   std::vector<std::unique_ptr<Seaweed>> seaweeds;
+  std::unique_ptr<Ship> ship;
   std::unique_ptr<Waterline> waterline;
   std::unique_ptr<Castle> castle;
 
@@ -84,6 +87,7 @@ public:
   void addSeaweed();
   void addWaterline();
   void addCastle();
+  void addShip();
   void redraw();
   void initColors();
   void initColorLookup();

src/Entity.cpp

@@ -0,0 +1,59 @@
+#include "Entity.h"
+#include "Aquarium.h"
+
+void Entity::draw(int layer) const {
+  auto &aquarium = Aquarium::getInstance();
+
+  const auto &image = getImage();
+  const auto &mask = getMask();
+  const char default_color = getDefaultColor();
+
+  std::string current_segment;
+  std::string current_colors;
+  current_segment.reserve(32);
+  current_colors.reserve(32);
+
+  const int base_x = static_cast<int>(x);
+  const int base_y = static_cast<int>(y);
+
+  for (size_t i = 0; i < image.size(); ++i) {
+    const std::string &row = image[i];
+    const std::string &mask_row = (i < mask.size()) ? mask[i] : "";
+
+    int cursor_x = base_x;
+    current_segment.clear();
+    current_colors.clear();
+
+    for (size_t j = 0; j < row.size(); ++j) {
+      const char ch = row[j];
+
+      if (ch == '?') {
+        // Flush current segment if not empty
+        if (!current_segment.empty()) {
+          aquarium.drawToBackBuffer(base_y + static_cast<int>(i), cursor_x,
+                                    layer, current_segment, current_colors);
+          cursor_x += static_cast<int>(current_segment.size());
+          current_segment.clear();
+          current_colors.clear();
+        }
+        ++cursor_x; // Skip transparent character
+        continue;
+      }
+
+      current_segment.push_back(ch);
+
+      // Use mask color if available, otherwise use default color for spaces
+      char color = default_color;
+      if (j < mask_row.size()) {
+        color = (mask_row[j] == ' ') ? default_color : mask_row[j];
+      }
+      current_colors.push_back(color);
+    }
+
+    // Flush remaining segment
+    if (!current_segment.empty()) {
+      aquarium.drawToBackBuffer(base_y + static_cast<int>(i), cursor_x, layer,
+                                current_segment, current_colors);
+    }
+  }
+}

src/Entity.h

@@ -1,8 +1,5 @@
 #pragma once
-#include <cctype>
-#include <ncurses.h>
 #include <string>
-#include <unordered_map>
 #include <vector>
 
 struct AssetPair {
@@ -21,4 +18,12 @@ public:
 
   float getX() const noexcept { return x; }
   float getY() const noexcept { return y; }
+
+  virtual void update() noexcept = 0;
+  virtual bool isOffScreen() const noexcept = 0;
+  virtual const std::vector<std::string> &getImage() const = 0;
+  virtual const std::vector<std::string> &getMask() const = 0;
+  virtual char getDefaultColor() const noexcept = 0;
+
+  void draw(int layer) const;
 };

src/Fish.cpp

@@ -14,12 +14,9 @@ Fish::Fish(int asset_index)
       speed(Random::floatInRange(0.25f, 2.25f)),
       moving_right(asset_index % 2 == 0) {
   const auto &aquarium = Aquarium::getInstance();
-
   y = Random::intInRange(static_cast<int>(image.size()) + 6,
                          aquarium.getHeight() - static_cast<int>(image.size()));
-
   x = moving_right ? -20.0f : static_cast<float>(aquarium.getWidth());
-
   randomizeMask();
 }
 
@@ -27,7 +24,6 @@ void Fish::randomizeMask() {
   // Clear and rebuild color map
   color_map.clear();
   color_map['4'] = 'W'; // White is always '4'
-
   // Assign random colors to digits 1-3, 5-9
   for (char digit = '1'; digit <= '9'; ++digit) {
     if (digit != '4') {
@@ -35,7 +31,6 @@ void Fish::randomizeMask() {
           0, static_cast<int>(AVAILABLE_COLORS.size()) - 1)];
     }
   }
-
   // Apply color mapping to mask
   for (auto &line : mask) {
     for (char &ch : line) {
@@ -52,50 +47,13 @@ int Fish::getRandomAssetIndex() {
 
 void Fish::update() noexcept { x += moving_right ? speed : -speed; }
 
-void Fish::draw(int layer) const {
-  auto &aquarium = Aquarium::getInstance();
-
-  // Pre-allocate strings to avoid repeated allocations
-  std::string current_segment;
-  std::string current_colors;
-  current_segment.reserve(32); // Reserve reasonable capacity
-  current_colors.reserve(32);
-
-  const int base_x = static_cast<int>(x);
-  const int base_y = static_cast<int>(y);
-
-  for (size_t i = 0; i < image.size(); ++i) {
-    const std::string &row = image[i];
-    const std::string &mask_row = (i < mask.size()) ? mask[i] : "";
-
-    int cursor_x = base_x;
-    current_segment.clear();
-    current_colors.clear();
-
-    for (size_t j = 0; j < row.size(); ++j) {
-      const char ch = row[j];
-
-      if (ch == '?') {
-        // Flush current segment if not empty
-        if (!current_segment.empty()) {
-          aquarium.drawToBackBuffer(base_y + static_cast<int>(i), cursor_x,
-                                    layer, current_segment, current_colors);
-          cursor_x += static_cast<int>(current_segment.size());
-          current_segment.clear();
-          current_colors.clear();
-        }
-        ++cursor_x; // Skip transparent character
-        continue;
-      }
-
-      current_segment.push_back(ch);
-      current_colors.push_back((j < mask_row.size()) ? mask_row[j] : 'k');
-    }
-
-    // Flush remaining segment
-    if (!current_segment.empty()) {
-      aquarium.drawToBackBuffer(base_y + static_cast<int>(i), cursor_x, layer,
-                                current_segment, current_colors);
-    }
+bool Fish::isOffScreen() const noexcept {
+  const auto &aquarium = Aquarium::getInstance();
+  if (moving_right) {
+    // Fish is off screen when its left edge is past the right border
+    return x > static_cast<float>(aquarium.getWidth());
+  } else {
+    // Fish is off screen when its right edge is past the left border
+    return (x + static_cast<float>(image[0].length())) < 0;
   }
 }

src/Fish.h

@@ -2,6 +2,7 @@
 #include "Entity.h"
 #include "assets/FishAssets.h"
 #include <array>
+#include <unordered_map>
 
 class Fish : public Entity {
 private:
@@ -9,11 +10,10 @@ private:
       'c', 'C', 'r', 'R', 'y', 'Y', 'b', 'B', 'g', 'G', 'm', 'M'};
 
   const std::vector<std::string> &image;
-  std::vector<std::string> mask; // Copy needed for color randomization
+  std::vector<std::string> mask;
   const float speed;
   const bool moving_right;
 
-  // Static color map to avoid recreation
   static std::unordered_map<char, char> color_map;
 
   explicit Fish(int asset_index);
@@ -22,6 +22,10 @@ private:
 
 public:
   Fish();
-  void update() noexcept;
-  void draw(int layer) const;
+
+  void update() noexcept override;
+  bool isOffScreen() const noexcept override;
+  const std::vector<std::string> &getImage() const override { return image; }
+  const std::vector<std::string> &getMask() const override { return mask; }
+  char getDefaultColor() const noexcept override { return 'k'; }
 };

src/Seaweed.h

@@ -3,11 +3,10 @@
 
 class Seaweed {
 private:
-  const int y;
+  const size_t x, y;
   static constexpr char PATTERN_LEFT = '(';
   static constexpr char PATTERN_RIGHT = ')';
 
-  const size_t x;
   const size_t height;
   const float speed;
 

src/Ship.cpp

@@ -0,0 +1,39 @@
+#include "Ship.h"
+#include "Aquarium.h"
+#include "Random.h"
+#include "assets/ShipAssets.h"
+
+Ship::Ship() : Ship(getRandomDirection()) {}
+
+Ship::Ship(int asset_index)
+    : Entity(), image(pirateShipAssets[asset_index].image),
+      mask(pirateShipAssets[asset_index].mask), speed(SHIP_SPEED),
+      moving_right(asset_index == 0) {
+  const auto &aquarium = Aquarium::getInstance();
+  // Ships move along the water surface (top of aquarium)
+  y = WATER_SURFACE_OFFSET;
+  // Start off-screen on appropriate side
+  if (moving_right) {
+    x = -static_cast<float>(
+        image[0].length()); // Start completely off left side
+  } else {
+    x = static_cast<float>(aquarium.getWidth()); // Start off right side
+  }
+}
+
+int Ship::getRandomDirection() {
+  return Random::intInRange(0, 1); // 0 = right, 1 = left
+}
+
+void Ship::update() noexcept { x += moving_right ? speed : -speed; }
+
+bool Ship::isOffScreen() const noexcept {
+  const auto &aquarium = Aquarium::getInstance();
+  if (moving_right) {
+    // Ship is off screen when its left edge is past the right border
+    return x > static_cast<float>(aquarium.getWidth());
+  } else {
+    // Ship is off screen when its right edge is past the left border
+    return (x + static_cast<float>(image[0].length())) < 0;
+  }
+}

src/Ship.h

@@ -0,0 +1,26 @@
+#pragma once
+#include "Entity.h"
+#include "assets/ShipAssets.h"
+
+class Ship : public Entity {
+private:
+  static constexpr float SHIP_SPEED = 1.0f;
+  static constexpr int WATER_SURFACE_OFFSET = 0;
+
+  const std::vector<std::string> &image;
+  const std::vector<std::string> &mask;
+  const float speed;
+  const bool moving_right;
+
+  explicit Ship(int asset_index);
+  static int getRandomDirection();
+
+public:
+  Ship();
+
+  void update() noexcept override;
+  bool isOffScreen() const noexcept override;
+  const std::vector<std::string> &getImage() const override { return image; }
+  const std::vector<std::string> &getMask() const override { return mask; }
+  char getDefaultColor() const noexcept override { return 'W'; }
+};

src/assets/ShipAssets.h

@@ -0,0 +1,37 @@
+#pragma once
+#include "../Entity.h"
+#include <vector>
+
+inline std::vector<AssetPair> pirateShipAssets = {
+    {{
+         R"(     |    |    |)",
+         R"(    )_)  )_)  )_))",
+         R"(   )___))___))___)\)",
+         R"(  )____)____)_____)\\)",
+         R"(_____|____|____|____\\\__)",
+         R"(\                   /)",
+     },
+     {
+         R"(     y    y    y)",
+         R"()",
+         R"(                  w)",
+         R"(                   ww)",
+         R"(yyyyyyyyyyyyyyyyyyyywwwyy)",
+         R"(y                   y)",
+     }},
+    {{
+         R"(         |    |    |)",
+         R"(        (_(  (_(  (_()",
+         R"(      /(___((___((___()",
+         R"(    //(_____(____(____()",
+         R"(__///____|____|____|_____)",
+         R"(    \                   /)",
+     },
+     {
+         R"(         y    y    y)",
+         R"()",
+         R"(      w)",
+         R"(    ww)",
+         R"(yywwwyyyyyyyyyyyyyyyyyyyy)",
+         R"(    y                   y)",
+     }}};