From f2068ddb2fbed6c6bf6bffc3648327435886e603 Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Thu, 17 Nov 2022 13:00:52 +0100
Subject: Add a simple resource manager

---
 src/main.cpp          | 21 +++++++++++++++++---
 src/resourceManager.h | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 3 deletions(-)
 create mode 100644 src/resourceManager.h

diff --git a/src/main.cpp b/src/main.cpp
index 94bf125..bd330fc 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,6 +5,7 @@
 
 #include "graphics/animation.h"
 #include "entity.h"
+#include "resourceManager.h"
 
 namespace gph = Graphics;
 
@@ -34,8 +35,8 @@ class Unit: Entity{
         sf::Vector2f speed;
 
 
-        Unit(){
-            spritesheet_.loadFromFile("assets/img/Player/Player Angle 1 Sheet.png");
+        Unit(sf::Texture& spritesheet){
+            spritesheet_ = spritesheet;
             standing_animation      = gph::Animation(spritesheet_,  6, 60, 44, 48, 0);
             walking_animation       = gph::Animation(spritesheet_,  8, 60, 44, 48, 1);
             shooting_animation      = gph::FlippedAnimation<gph::OneShotAnimation>(spritesheet_,  6, 60, 44, 48, 2);
@@ -66,16 +67,30 @@ class Unit: Entity{
             sprite.setScale(8,8);
             sprite.setTextureRect(current_animation->next(dt));
             sprite.setPosition(position.x, position.y);
+            sprite = sprite;
         }
 };
 
+
+enum class TextureId{
+    Angle1,
+    Angle2,
+    Front,
+    Back,
+    Side
+};
+
 int main()
 {
     sf::RenderWindow renderWindow(sf::VideoMode(640, 480), "Demo Game");
 
     sf::Event event;
     sf::Clock clock;
-    Unit unit;
+
+    ResourceManager<sf::Texture, TextureId> TextureManager;
+    TextureManager.load( TextureId::Angle1, "assets/img/Player/Player Angle 1 Sheet.png");
+
+    Unit unit = Unit(TextureManager.get(TextureId::Angle1));
 
     renderWindow.setFramerateLimit(60);
 
diff --git a/src/resourceManager.h b/src/resourceManager.h
new file mode 100644
index 0000000..be6e250
--- /dev/null
+++ b/src/resourceManager.h
@@ -0,0 +1,54 @@
+#ifndef RESOURCE_MANAGER_H
+#define RESOURCE_MANAGER_H
+
+#include <map>
+#include <string>
+#include <memory>
+#include <stdexcept>
+#include <cassert>
+
+template <typename Resource, typename Identifier>
+class ResourceManager{
+    private:
+        std::map<Identifier,std::unique_ptr<Resource>> resourceMap;
+    public:
+        void load(Identifier id, const std::string& path);
+        Resource& get(Identifier id);
+        const Resource& get(Identifier id) const;
+};
+
+template <typename Resource, typename Identifier>
+void
+ResourceManager<Resource, Identifier>::load(Identifier id,
+        const std::string& path){
+    auto resource = std::make_unique<Resource>();
+    if( !resource->loadFromFile(path) ){
+        throw("ResoureManager::load - Failed to load filename: " + path);
+    }
+    auto inserted = resourceMap.insert(
+            std::make_pair(id, std::move(resource))
+    );
+    assert(inserted.second);
+}
+
+template <typename Resource, typename Identifier>
+Resource&
+ResourceManager<Resource, Identifier>::get(Identifier id)
+{
+    auto found = resourceMap.find(id);
+    assert(found != resourceMap.end());
+
+    return *found->second;
+}
+
+template <typename Resource, typename Identifier>
+const Resource&
+ResourceManager<Resource, Identifier>::get(Identifier id) const
+{
+    auto found = resourceMap.find(id);
+    assert(found != resourceMap.end());
+
+    return *found->second;
+}
+
+#endif // RESOURCE_MANAGER_H
-- 
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