key map

demo/Demo.cpp

@@ -179,8 +179,6 @@ struct Demo : Game
         Input *input = new Input(this);
         input->print_branch();
         mushroom->print_branch();
-        // Game* root = get_root();
-        // std::cout << root << std::endl;
     }
 
     std::string get_class_name()
@@ -343,6 +341,10 @@ struct Demo : Game
             get_framerate_indicator_surface(frame_count), GL_LINEAR);
     }
 
+    void respond(SDL_Event& event)
+    {
+    }
+
     void update()
     {
         // while (SDL_PollEvent(&event))

demo/config.json

@@ -10,5 +10,6 @@
 
     "keys":
     {
+        "screenshot": ["CTRL", "s"]
     }
 }

src/Configuration.cpp

@@ -1,6 +1,6 @@
 #include "Configuration.hpp"
 
-Configuration::Configuration(Node *parent) : Configuration(parent, "config") {}
+Configuration::Configuration(Node *parent) : Configuration(parent, "config.json") {}
 
 Configuration::Configuration(Node *parent, fs::path path) : Node(parent)
 {
@@ -9,15 +9,20 @@ Configuration::Configuration(Node *parent, fs::path path) : Node(parent)
     config_path = path;
     set_defaults();
     load();
+    merge();
 }
 
 void Configuration::set_defaults()
 {
     sys_config["keys"] = {
         {"record", {"CTRL", "SHIFT", "F10"}},
-        {"screenshot", "F9"}
+        {"screenshot", "F9"},
+        {"action", " "},
+        {"up", "up"},
+        {"right", "right"},
+        {"down", "down"},
+        {"left", "left"}
     };
-    config = sys_config;
 }
 
 void Configuration::load()
@@ -27,16 +32,21 @@ void Configuration::load()
 
 void Configuration::load(fs::path path)
 {
-    std::ifstream contents(path);
-    contents >> game_config;
-    // config["blob"] = false;
-    // config["slime"][1] = {420, 69};
-    // config["goo"] = "yum";
-    // std::cout << std::setw(4) << config << std::endl;
-    // std::cout << std::setw(4) << sys_config << std::endl;
-    config.update(game_config);
+    if (fs::exists(path))
+    {
+        std::ifstream contents(path);
+        contents >> game_config;
+    }
+}
+
+void Configuration::merge()
+{
+    config = sys_config;
+    if (not game_config.empty())
+    {
+        config["keys"].update(game_config["keys"]);
+    }
     std::cout << std::setw(4) << config << std::endl;
-    std::cout << std::setw(4) << game_config << std::endl;
 }
 
 void Configuration::write()
@@ -47,5 +57,5 @@ void Configuration::write()
 void Configuration::write(fs::path path)
 {
     std::ofstream output(path);
-    output << std::setw(tab_width) << config << std::endl;
+    output << std::setw(tab_width) << game_config << std::endl;
 }

src/Configuration.hpp

@@ -8,6 +8,7 @@
 
 #include "json/json.hpp"
 
+#include "filesystem.hpp"
 #include "Node.hpp"
 
 struct Configuration : Node
@@ -21,6 +22,7 @@ struct Configuration : Node
     void set_defaults();
     void load();
     void load(fs::path path);
+    void merge();
     void write();
     void write(fs::path path);
     std::string get_class_name() { return "Configuration"; }

src/Delegate.cpp

@@ -22,7 +22,7 @@ void Delegate::dispatch()
             {
                 for (subscriber s : iter->second)
                 {
-                    s(&event);
+                    s(event);
                 }
             }
         }

src/Delegate.hpp

@@ -9,7 +9,7 @@
 
 #include "SDL.h"
 
-typedef std::function<void(SDL_Event*)> subscriber;
+typedef std::function<void(SDL_Event&)> subscriber;
 
 struct Delegate : Node
 {

src/Game.cpp

@@ -152,9 +152,9 @@ void Game::set_framerate(int fps)
     frame_length = 1000.0 / framerate;
 }
 
-void Game::handle_quit_event(SDL_Event *event)
+void Game::handle_quit_event(SDL_Event &event)
 {
-    if (event->type == SDL_QUIT)
+    if (event.type == SDL_QUIT)
     {
         flag_to_end();
     }

src/Game.hpp

@@ -48,7 +48,7 @@ struct Game : Node
     void flag_to_end();
     virtual void update() {};
     void set_framerate(int);
-    void handle_quit_event(SDL_Event*);
+    void handle_quit_event(SDL_Event&);
     void quit();
     std::string get_class_name() { return "Game"; }
 

src/Input.cpp

@@ -4,17 +4,75 @@ Input::Input(Node *parent) : Node(parent)
 {
     load_key_map();
     get_delegate()->add_subscriber(std::bind(&Input::respond, this, std::placeholders::_1), SDL_KEYDOWN);
+    for (KeyCombination& combination : key_map)
+    {
+        print_key_combination(combination);
+    }
+}
+
+void Input::print_key_combination(KeyCombination &combination)
+{
+    std::cout << "<KeyCombination " << combination.command << ", " <<
+        combination.key << ", ctrl " << combination.ctrl << ", shift " <<
+        combination.shift << ", alt " << combination.alt << ">" << std::endl;
 }
 
 void Input::load_key_map()
 {
+    nlohmann::json &config = get_configuration();
+    for (auto& entry : config.at("keys").items())
+    {
+        bool ctrl = false, alt = false, shift = false;
+        int key;
+        if (not entry.value().is_string())
+        {
+            for (std::string part : entry.value())
+            {
+                if (part == "CTRL")
+                {
+                    ctrl = true;
+                }
+                else if (part == "SHIFT")
+                {
+                    shift = true;
+                }
+                else if (part == "ALT")
+                {
+                    alt = true;
+                }
+                else
+                {
+                    key = get_key_code(part);
+                }
+            }
+        }
+        else
+        {
+            key = get_key_code(entry.value());
+        }
+        add_to_key_map(entry.key(), key, ctrl, shift, alt);
+    }
 }
 
-void Input::add_to_key_map()
+int Input::get_key_code(std::string name)
 {
+    if (key_ids.count(name) > 0)
+    {
+        return key_ids[name];
+    }
+    else
+    {
+        return (SDL_Keycode) name[0];
+    }
 }
 
-void Input::respond(SDL_Event *event)
+void Input::add_to_key_map(
+    std::string command, SDL_Keycode key_code, bool ctrl, bool shift, bool alt)
 {
-    std::cout << event->key.keysym.sym << std::endl;
+    key_map.push_back((KeyCombination){command, key_code, ctrl, shift, alt});
+}
+
+void Input::respond(SDL_Event &event)
+{
+    std::cout << event.key.keysym.sym << std::endl;
 }

src/Input.hpp

@@ -11,16 +11,17 @@
 
 struct KeyCombination
 {
-    bool alt;
+    std::string command;
+    int key;
     bool ctrl;
     bool shift;
-    unsigned int key;
+    bool alt;
 };
 
 struct Input : Node
 {
     
-    std::map<std::string, unsigned int> key_ids
+    std::map<std::string, SDL_Keycode> key_ids
     {
         {"up", SDLK_UP},
         {"right", SDLK_RIGHT},
@@ -42,10 +43,13 @@ struct Input : Node
     std::list<KeyCombination> key_map;
 
     Input(Node*);
-    void respond(SDL_Event*);
+    void respond(SDL_Event&);
     std::string get_class_name() { return "Input"; }
     void load_key_map();
-    void add_to_key_map();
+    SDL_Keycode get_key_code(std::string);
+    void add_to_key_map(
+        std::string, SDL_Keycode, bool = false, bool = false, bool = false);
+    void print_key_combination(KeyCombination&);
 
 };
 

src/Node.cpp

@@ -9,9 +9,9 @@ Node::Node(Node *parent) : parent(parent)
     print_branch();
 }
 
-Configuration* Node::get_configuration()
+nlohmann::json& Node::get_configuration()
 {
-    return get_root()->configuration;
+    return get_root()->configuration->config;
 }
 
 Delegate* Node::get_delegate()

src/Node.hpp

@@ -3,12 +3,12 @@
 
 #include <iostream>
 
+#include "json/json.hpp"
 #include "SDL.h"
 
 #include "filesystem.hpp"
 
 struct Game;
-struct Configuration;
 struct Delegate;
 
 struct Node
@@ -18,8 +18,8 @@ struct Node
 
     Node();
     Node(Node*);
-    Game *get_root();
-    Configuration* get_configuration();
+    Game* get_root();
+    nlohmann::json& get_configuration();
     Delegate* get_delegate();
     void print_branch();
     virtual std::string get_class_name() { return "Node"; };