attampt at adding zoom

assets/entities.json

@@ -1,11 +1,11 @@
 {
-    "ships": [
+  "ship": {
-        {
     "destroyer": {
         "texture": "assets/entities/ships/destroyer.svg",
         "width": 58,
-                "height": 512
+        "height": 512,
+        "speed": 250
       }
     }
-    ]
+  }
-}
+  

src/color.h

@@ -0,0 +1,22 @@
+
+#ifndef RESET
+
+#define RESET   "\033[0m"
+#define BLACK   "\033[30m"      /* Black */
+#define RED     "\033[31m"      /* Red */
+#define GREEN   "\033[32m"      /* Green */
+#define YELLOW  "\033[33m"      /* Yellow */
+#define BLUE    "\033[34m"      /* Blue */
+#define MAGENTA "\033[35m"      /* Magenta */
+#define CYAN    "\033[36m"      /* Cyan */
+#define WHITE   "\033[37m"      /* White */
+#define BOLDBLACK   "\033[1m\033[30m"      /* Bold Black */
+#define BOLDRED     "\033[1m\033[31m"      /* Bold Red */
+#define BOLDGREEN   "\033[1m\033[32m"      /* Bold Green */
+#define BOLDYELLOW  "\033[1m\033[33m"      /* Bold Yellow */
+#define BOLDBLUE    "\033[1m\033[34m"      /* Bold Blue */
+#define BOLDMAGENTA "\033[1m\033[35m"      /* Bold Magenta */
+#define BOLDCYAN    "\033[1m\033[36m"      /* Bold Cyan */
+#define BOLDWHITE   "\033[1m\033[37m"      /* Bold White */
+
+#endif

src/const.hpp

@@ -1,7 +1,13 @@
 #include <SDL3/SDL_stdinc.h>
-constexpr int SCREEN_WIDTH = 800;
+
-constexpr int SCREEN_HEIGHT = 600;
+#ifndef CONST_NS
-constexpr int WORLD_WIDTH = 1600;
+#define CONST_NS
-constexpr int WORLD_HEIGHT = 1200;
+
+constexpr int SCREEN_WIDTH = 1600;
+constexpr int SCREEN_HEIGHT = 1200;
+constexpr int WORLD_WIDTH = 20000;
+constexpr int WORLD_HEIGHT = 200000;
 constexpr int TARGET_FPS = 60;
 constexpr Uint64 TARGET_FRAME_TIME_NS = 1'000'000'000 / TARGET_FPS;
+
+#endif

src/exitcleanup.cpp

@@ -0,0 +1,63 @@
+#include <errno.h>
+#include <csignal>
+#include "color.h"
+#include <iostream>
+#include "exitcleanup.hpp"
+#include "types.hpp"
+#include "main.hpp"
+
+void SignalHandler(int code) {
+    switch (code) {
+      case SIGTERM:
+        std::cerr << "\nreceived SIGTERM exiting...\n";
+        break;
+      case SIGINT:
+        std::cerr << "\nreceived SIGINT exiting...\n";
+        break;
+      case SIGQUIT:
+        std::cerr << "\nreceived SIGQUIT exiting...\n";
+        break;
+      case SIGHUP:
+        std::cerr << "\nreceived SIGHUP exiting...\n";
+        break;
+    
+      case SIGSEGV:
+        std::cerr << "\nreceived SIGSEGV(segmentaiton fault) exiting...\nIf this "
+                     "repeats please report it as a bug\n";
+        break;
+    }
+    try {
+      GeneralCleanUp(code);
+    } catch(...) {
+      std::cerr << RED"[ERROR]" << RESET" general cleanup error\n";
+      exit(errno);
+    }
+  }
+  
+  void GeneralCleanUp(int code) {
+  
+    for(Entity *entity : loaded_entities) {
+      try {
+      SDL_DestroyTexture(entity->texture);
+      } catch(...) {
+        std::cerr << RED"[ERROR]" << RESET" failed to destroy texture of entity\nentity address:" << YELLOW << entity << RESET"\n";
+      }
+    }
+  
+    try {
+    SDL_DestroyWindow(main_sdl_session.window);
+    } catch(...) {
+      std::cerr << RED"[ERROR]" << RESET" failed to destroy window\n";
+    }
+    try{
+    SDL_DestroyRenderer(main_sdl_session.renderer);
+    } catch(...) {
+      std::cerr << RED"[ERROR]" << RESET" failed to destroy renderer\n";
+    }
+    try {
+    SDL_Quit();
+    } catch (...) {
+      std::cerr << RED"[ERROR]" << RESET" failed to quit sdl\n";
+    } 
+    exit(code);
+  }

src/exitcleanup.hpp

@@ -0,0 +1,4 @@
+#ifndef EC_NS
+#define EC_NS
+void GeneralCleanUp(int code = 0);
+#endif

src/helper_funcs.cpp

@@ -1,23 +0,0 @@
-#include "types.hpp"
-#include <fstream>
-#include <nlohmann/json.hpp>
-#include <string>
-
-using json = nlohmann::json;
-
-void load_entity(Entity &entity, std::string type, std::string name) {
-  try {
-    std::ifstream entitiesF("assets/entities.json");
-    json entities = json::parse(entitiesF);
-
-  } catch (const json::parse_error &e) {
-    std::cerr << "Parse error: " << e.what() << "\n";
-    exit(1);
-  } catch (const std::exception &e) {
-    std::cerr << "Error: " << e.what() << "\n";
-    exit(2);
-  }
-
-  
-
-}

src/init.cpp

@@ -0,0 +1,46 @@
+#include "init.hpp"
+#include "color.h"
+#include "main.hpp"
+#include <csignal>
+#include <cstdlib>
+#include <fstream>
+#include <iostream>
+#include <nlohmann/json.hpp>
+#include <ostream>
+#include <string>
+
+using json = nlohmann::json;
+
+void init_entity(Entity &entity, SDL_Renderer *renderer, std::string type,
+                 std::string name) {
+  json entities;
+  try {
+    std::ifstream entitiesF("./assets/entities.json");
+    entities = json::parse(entitiesF);
+
+  } catch (const json::parse_error &e) {
+    std::cerr << "Parse error: " << e.what() << "\n";
+    exit(1);
+  } catch (const std::exception &e) {
+    std::cerr << "Error: " << e.what() << "\n";
+    exit(2);
+  }
+
+  loaded_entities.push_back(&entity);
+  std::clog << entities[type];
+
+  entity.texture = IMG_LoadTexture(
+      renderer, entities[type][name]["texture"].get<std::string>().c_str());
+
+  if (entity.texture == NULL) {
+    std::cerr << "\n" << RED "[ERROR]" << RESET " failed to load texture\n";
+    exit(ENOENT);
+  }
+
+  entity.srcRect = {0, 0, entities[type][name]["width"].get<int>(),
+                    entities[type][name]["height"].get<int>()};
+
+  entity.speed = entities[type][name]["speed"].get<float>();
+
+  entity.gotoT = false;
+}

src/init.hpp

@@ -0,0 +1,8 @@
+#include "types.hpp"
+
+#ifndef IN_NS
+#define IN_NS
+
+void init_entity(Entity &entity, SDL_Renderer *renderer,std::string type, std::string name);
+
+#endif

src/main.cpp

@@ -1,30 +1,37 @@
+#include "exitcleanup.hpp"
+#include "init.hpp"
 #include "types.hpp"
 #include <SDL3/SDL.h>
 #include <SDL3_image/SDL_image.h>
 #include <cmath>
+#include <csignal>
+#include <iostream>
+#include <vector>
+#include <ctime>
+#include <iomanip>
 
-#define destroyer_width 58
+std::vector<Entity *> loaded_entities;
-#define destroyer_height 512
+sdl_session main_sdl_session;
 
 int main() {
   SDL_Init(SDL_INIT_VIDEO);
-  SDL_Window *window =
+
+  main_sdl_session.window =
       SDL_CreateWindow("Naval Swarm", SCREEN_WIDTH, SCREEN_HEIGHT, 0);
-  SDL_Renderer *renderer = SDL_CreateRenderer(window, "gpu,vulcan");
+  SDL_Renderer *renderer =
+      SDL_CreateRenderer(main_sdl_session.window, "gpu,vulcan");
 
   // Load textures
-  SDL_Texture *spriteSheet = IMG_LoadTexture(renderer, "assets/destroyer.svg");
   SDL_Texture *bgTexture = IMG_LoadTexture(renderer, "assets/background.png");
 
   // Initialize player
   Entity destroyer;
-  destroyer.texture = spriteSheet;
+
-  destroyer.set_offset(destroyer_width / 2, destroyer_height / 2);
+  init_entity(destroyer, renderer, "ship", "destroyer");
-  destroyer.position() = {WORLD_WIDTH / 2.0f, WORLD_HEIGHT / 2.0f, 58.0f,
+
-                          512.0f};
+  destroyer.position = {WORLD_WIDTH / 2.0f, WORLD_HEIGHT / 2.0f,
-  destroyer.srcRect = {0, 0, destroyer_width,
+                        static_cast<float>(destroyer.srcRect.w),
-                       destroyer_height}; // Static source rectangle
+                        static_cast<float>(destroyer.srcRect.h)};
-  destroyer.angle = 0;
 
   // Initialize camera
   Camera camera;
@@ -32,22 +39,40 @@ int main() {
   Uint64 lastFrameTime = SDL_GetTicksNS();
   float deltaTime = 0.0f;
 
+  time_t start_time = std::time(nullptr);
+
   while (running) {
     const Uint64 frameStart = SDL_GetTicksNS();
 
+
     // Event handling
     SDL_Event event;
     while (SDL_PollEvent(&event)) {
-      if (event.type == SDL_EVENT_QUIT)
+      if (event.type == SDL_EVENT_QUIT) {
         running = false;
+      }
+      if (event.type == SDL_EVENT_MOUSE_WHEEL) {
+        float zoom_factor = (event.wheel.y > 0) ? 0.9f : 1.1f;
+        camera.view.w *= zoom_factor;
+        camera.view.h *= zoom_factor;
+
+        // Zoom towards mouse position
+        SDL_FPoint mouse_world_pos = {
+            camera.view.x + event.wheel.mouse_x,
+            camera.view.y + event.wheel.mouse_y
+        };
+        
+        camera.view.x = mouse_world_pos.x - (event.wheel.mouse_x * zoom_factor);
+        camera.view.y = mouse_world_pos.y - (event.wheel.mouse_y * zoom_factor);
+    }
       if (event.type == SDL_EVENT_MOUSE_BUTTON_DOWN) {
         // Check specific button (e.g., left mouse button)
         if (event.button.button == SDL_BUTTON_LEFT) {
-          printf("Left mouse clicked at (%.1f, %.1f)\nCamera position: (%.1f, "
+          std::clog << "Left mouse clicked at (" 
-                 "%.1f)\nTarget position: (%.1f, %.1f)\n",
+          << std::fixed << std::setprecision(1) << event.button.x << ", " << event.button.y << ")\n"
-                 event.button.x, event.button.y, camera.view.x, camera.view.y,
+          << "Camera position: (" << camera.view.x << ", " << camera.view.y << ")\n"
-                 camera.view.x + event.button.x,
+          << "Target position: (" << (camera.view.x + event.button.x) << ", " 
-                 camera.view.y + event.button.y);
+          << (camera.view.y + event.button.y) << ")\ntime since start: " << (std::time(nullptr) - start_time) << "\n";
           destroyer.Tposition.x = camera.view.x + event.button.x;
           destroyer.Tposition.y = camera.view.y + event.button.y;
           destroyer.gotoT = true;
@@ -65,6 +90,16 @@ int main() {
       lastToggle = SDL_GetTicks();
     }
 
+    //DEBUG
+    if (keystate[SDL_SCANCODE_B] && (SDL_GetTicks() - lastToggle > 200)) {
+      std::clog << "x: " << destroyer.position.x << " y: " << destroyer.position.y << "\n";
+    }
+    if (keystate[SDL_SCANCODE_O] && (SDL_GetTicks() - lastToggle > 200)) {
+
+      destroyer.position.x = 0;
+      destroyer.position.y = 0;
+        }
+
     // Player movement
     int moveX = keystate[SDL_SCANCODE_RIGHT] - keystate[SDL_SCANCODE_LEFT];
     int moveY = keystate[SDL_SCANCODE_DOWN] - keystate[SDL_SCANCODE_UP];
@@ -107,14 +142,16 @@ int main() {
     }
 
     float step = destroyer.speed * deltaTime;
-    destroyer.position().x += (float)moveX * step;
+    destroyer.position.x += (float)moveX * step;
-    destroyer.position().y += (float)moveY * step;
+    destroyer.position.y += (float)moveY * step;
 
     if (destroyer.gotoT) {
-      float dx = destroyer.Tposition.x - destroyer.position().x;
+      float dx = destroyer.Tposition.x - destroyer.Central_position().x;
-      float dy = destroyer.Tposition.y - destroyer.position().y;
+      float dy = destroyer.Tposition.y - destroyer.Central_position().y;
 
-      destroyer.angle = std::atan2(dy, dx) * 180 / M_PI;
+      if(dx != 0 && dy != 0) {
+        destroyer.angle = std::atan2(dy, dx) * 180 / M_PI + 90;
+      }
 
       float distance = std::sqrt(dx * dx + dy * dy);
       if (distance > 0) {
@@ -122,11 +159,12 @@ int main() {
         dy /= distance;
 
         if (distance <= step) {
-          destroyer.position().x = destroyer.Tposition.x;
+          destroyer.Central_position(destroyer.Tposition.x,
-          destroyer.position().y = destroyer.Tposition.y;
+                                     destroyer.Tposition.y);
+
         } else {
-          destroyer.position().x += dx * step;
+          destroyer.position.x += dx * step;
-          destroyer.position().y += dy * step;
+          destroyer.position.y += dy * step;
         }
 
       } else {
@@ -134,12 +172,15 @@ int main() {
       }
     }
 
-    // Camera movement
+    // Camera handling
+    camera.view.w = SCREEN_WIDTH / camera.zoom;
+    camera.view.h = SCREEN_HEIGHT / camera.zoom;
+
     if (camera.followPlayer) {
-      float targetX = destroyer.position().x + destroyer.position().w / 2 -
+      float targetX =
-                      camera.view.w / 2;
+          destroyer.position.x + destroyer.position.w / 2 - camera.view.w / 2;
-      float targetY = destroyer.position().y + destroyer.position().h / 2 -
+      float targetY =
-                      camera.view.h / 2;
+          destroyer.position.y + destroyer.position.h / 2 - camera.view.h / 2;
       camera.view.x += (targetX - camera.view.x) * camera.smoothness;
       camera.view.y += (targetY - camera.view.y) * camera.smoothness;
     } else {
@@ -150,13 +191,15 @@ int main() {
     }
 
     // World bounds
-    destroyer.position().x = SDL_clamp(destroyer.position().x, 0.0f,
+    destroyer.position.x = SDL_clamp(destroyer.position.x, 0.0f,
-                                       WORLD_WIDTH - destroyer.position().w);
+                                     WORLD_WIDTH - destroyer.position.w);
-    destroyer.position().y = SDL_clamp(destroyer.position().y, 0.0f,
+    destroyer.position.y = SDL_clamp(destroyer.position.y, 0.0f,
-                                       WORLD_HEIGHT - destroyer.position().h);
+                                     WORLD_HEIGHT - destroyer.position.h);
+
+    camera.view.w = SDL_clamp(camera.view.w, SCREEN_WIDTH * camera.zoom,  SCREEN_WIDTH * 4.0f);
+    camera.view.h = SDL_clamp(camera.view.h,SCREEN_HEIGHT * camera.zoom,SCREEN_HEIGHT * 4.0f);
     camera.view.x = SDL_clamp(camera.view.x, 0.0f, WORLD_WIDTH - camera.view.w);
-    camera.view.y =
+    camera.view.y = SDL_clamp(camera.view.y, 0.0f, WORLD_HEIGHT - camera.view.h);
-        SDL_clamp(camera.view.y, 0.0f, WORLD_HEIGHT - camera.view.h);
 
     // ANIMATION HERE
 
@@ -174,9 +217,9 @@ int main() {
     // Draw player (simplified without animation)
     SDL_FRect srcFRect;
     SDL_RectToFRect(&destroyer.srcRect, &srcFRect);
-    SDL_FRect destRect = {destroyer.position().x - camera.view.x,
+    SDL_FRect destRect = {destroyer.position.x - camera.view.x,
-                          destroyer.position().y - camera.view.y,
+                          destroyer.position.y - camera.view.y,
-                          destroyer.position().w, destroyer.position().h};
+                          destroyer.position.w, destroyer.position.h};
     SDL_RenderTextureRotated(renderer, destroyer.texture, &srcFRect, &destRect,
                              destroyer.angle, nullptr, SDL_FLIP_NONE);
 
@@ -196,10 +239,8 @@ int main() {
   }
 
   // Cleanup
-  SDL_DestroyTexture(spriteSheet);
   SDL_DestroyTexture(bgTexture);
-  SDL_DestroyRenderer(renderer);
+  GeneralCleanUp();
-  SDL_DestroyWindow(window);
   SDL_Quit();
   return 0;
 }

src/main.hpp

@@ -0,0 +1,10 @@
+#include <vector>
+#include "types.hpp"
+
+#ifndef MAIN_NS
+#define MAIN_NS
+
+extern std::vector<Entity*> loaded_entities;
+extern sdl_session main_sdl_session;
+
+#endif

src/types.hpp

@@ -2,36 +2,41 @@
 #include <SDL3/SDL.h>
 #include <SDL3_image/SDL_image.h>
 #include <iostream>
+#include <optional>
+#include <cmath>
 
-struct Angle360 {
+#ifndef TYPES_NS
+#define TYPES_NS
+
+struct Angle {
 private:
-  int value{0};
+  float value{0};
 
   void normalize() {
-    value %= 360;
+    value = std::fmod(value, 360);
     if (value < 0)
       value += 360; // Handle negative values
   }
 
 public:
   // Constructor
-  Angle360(int val = 0) : value(val) { normalize(); }
+  Angle(int val = 0) : value(val) { normalize(); }
 
   // Assignment operator
-  Angle360 &operator=(int val) {
+  Angle &operator=(int val) {
     value = val;
     normalize();
     return *this;
   }
 
   // Compound assignment
-  Angle360 &operator+=(int rhs) {
+  Angle &operator+=(int rhs) {
     value += rhs;
     normalize();
     return *this;
   }
 
-  Angle360 &operator-=(int rhs) {
+  Angle &operator-=(int rhs) {
     value -= rhs;
     normalize();
     return *this;
@@ -41,42 +46,64 @@ public:
   operator int() const { return value; }
 
   // Stream output
-  friend std::ostream &operator<<(std::ostream &os, const Angle360 &a) {
+  friend std::ostream &operator<<(std::ostream &os, const Angle &a) {
     return os << a.value;
   }
 };
 
+struct basic_cords {
+  float x;
+  float y;
+};
+
 struct Entity {
-private:
+  SDL_FRect position;
-  SDL_FRect m_position;
-  SDL_FPoint m_offset{0, 0}; // Default offset
-
-public:
-  // Direct access reference with auto-sync
-  SDL_FRect &position() { return m_position; }
-  const SDL_FRect &position() const { return m_position; }
-
-  // Computed central position (always fresh)
-  SDL_FRect Central_position() const {
-    return {m_position.x + m_offset.x, m_position.y + m_offset.y, m_position.w,
-            m_position.h};
-  }
-
-  // Set offset values
-  void set_offset(float x, float y) { m_offset = {x, y}; }
-
-  // --- Existing members ---
   SDL_FRect Tposition;
-  bool gotoT;
+  bool gotoT = false;
   SDL_Texture *texture;
   SDL_Rect srcRect;
-  float speed = 250.0f;
+  float speed;
-  Angle360 angle;
+  Angle angle = 0;
+
+  basic_cords Central_position(std::optional<float> x = std::nullopt,
+                               std::optional<float> y = std::nullopt) {
+    if (x != std::nullopt) {
+      position.x = *x - position.w / 2;
+    }
+    if (y != std::nullopt) {
+      position.y = *y - position.h / 2;
+    }
+
+    return {position.x + position.w / 2, position.y + position.h / 2};
+  }
 };
 
 struct Camera {
   SDL_FRect view = {0.0f, 0.0f, SCREEN_WIDTH, SCREEN_HEIGHT};
+
+  basic_cords Center_of_view(std::optional<float> x = std::nullopt,
+    std::optional<float> y = std::nullopt) {
+    if (x != std::nullopt) {
+			view.x = *x - view.w / 2;
+		}
+		if (y != std::nullopt) {
+			view.y = *y - view.h / 2;
+		}
+
+return {view.x + view.w / 2, view.y + view.h / 2};
+}
+
   bool followPlayer = false;
   float speed = 500.0f;
   float smoothness = 0.1f;
+  float zoom = 1.0f;
+	float minZoom = 0.5f;
+	float maxZoom = 3.0f;
+	float zoomSpeed = 0.1f;
 };
+
+struct sdl_session {
+  SDL_Window *window;
+  SDL_Renderer *renderer;
+};
+#endif