create sprite manager

Enemy.cpp

@@ -1,14 +1,15 @@
 #include "Enemy.h"
 
-Enemy::Enemy(Point center_pos, int _type) : spr(E_LiveObjType::Enemy, _type, get_move_frames(_type), get_attack_frames(_type)), mov(center_pos)
+Enemy::Enemy(Point center_pos, int _type) : type(_type), mov(center_pos)
 {
     hp = get_hp(_type);
     sz = get_sz(_type);
     speed = get_speed(_type);
+    cur_dir = std::rand() % 2 ? E_Dir::LEFT : E_Dir::RIGHT;
 }
 
 void Enemy::Draw(Image &canvas)
 {
     auto p = mov.Pos();
-    spr.Draw(canvas, {.x = p.x - sz.w / 2, .y = p.y - sz.h / 2});
+    SpriteManager::Get().enemy_spr[type].Draw(canvas, {.x = p.x - sz.w / 2, .y = p.y - sz.h / 2}, cur_dir);
 }

Enemy.h

@@ -1,22 +1,12 @@
 #ifndef MAIN_I3z_ENE_H
 #define MAIN_I3z_ENE_H
 
-#include "LiveObjSprite.h"
+#include "SpriteManager.h"
 #include "Movement.h"
 
 struct Enemy
 {
 private:
-    static constexpr int get_move_frames(int type)
-    {
-        if (type == 0)return 8;
-        return 1;
-    }
-    static constexpr int get_attack_frames(int type)
-    {
-        if (type == 0)return 8;
-        return 1;
-    }
     static constexpr int get_hp(int type)
     {
         if (type == 0)return 20;
@@ -40,8 +30,10 @@ struct Enemy
     Size sz {.w = 0,.h = 0};
     int hp;
     Movement mov;
-    LiveObjSprite spr;
     int speed = 50;
 
+    int type;
+
+    E_Dir cur_dir;
 };
 #endif

LiveObjSprite.h

@@ -88,11 +88,18 @@ struct LiveObjSprite
 
     void Draw(Image &canvas, const Point p, bool flip_OX = true, bool flip_OY = false)
     {
-        if (cur_spr == nullptr)SpritePrepare();
+     if (cur_spr == nullptr)SpritePrepare();
      if(lo_type == E_LiveObjType::Character)cur_spr->Draw(canvas, p, flip_OX, flip_OY);
      else cur_spr->Draw(canvas, p, flip_OX, flip_OY ^ (cur_dir == E_Dir::LEFT ? true : false));
     }
 
+    void Draw(Image &canvas, const Point p, E_Dir dir, bool flip_OX = true, bool flip_OY = false)
+    {
+        if (cur_spr == nullptr)SpritePrepare();
+        if (lo_type == E_LiveObjType::Character)error("not for character");
+        else cur_spr->Draw(canvas, p, flip_OX, flip_OY ^ (dir == E_Dir::LEFT ? true : false));
+    }
+
     const Image& GetImage(E_LiveObjState state, E_Dir dir, int frame) const {return spr_states.find(state)->second.find(dir)->second.GetFrame(frame);}
     const Image& GetImage(E_LiveObjState state, int frame) const {return spr_states.find(state)->second.find(cur_dir)->second.GetFrame(frame);}
 

SpriteManager.h

@@ -0,0 +1,31 @@
+#ifndef MAIN_SPMz_ENE_H
+#define MAIN_SPMz_ENE_H
+
+#include "LiveObjSprite.h"
+
+struct SpriteManager
+{
+    static SpriteManager &Get() { static SpriteManager spr {}; return spr; }
+
+    std::vector<LiveObjSprite> enemy_spr;
+
+private:
+    static constexpr int e_get_move_frames(int type)
+    {
+        if (type == 0)return 8;
+        return 1;
+    }
+    static constexpr int e_get_attack_frames(int type)
+    {
+        if (type == 0)return 8;
+        return 1;
+    }
+    SpriteManager() : enemy_spr()
+    {
+        for (int _type = 0; _type < 1; _type++)
+            enemy_spr.emplace_back(E_LiveObjType::Enemy, _type, e_get_move_frames(_type), e_get_attack_frames(_type));
+    }
+
+};
+
+#endif