From 0c8630ccffd6cd3d3beaf0a37690c89de63ad364 Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Fri, 15 Dec 2023 14:44:56 -0500
Subject: [PATCH] working on callbacks / input

---
 include/blt/gfx/input.h | 100 ++++++++++++++++++++++++++++++++++++++++
 libraries/BLT           |   2 +-
 src/blt/gfx/window.cpp  |   8 ++--
 3 files changed, 106 insertions(+), 4 deletions(-)
 create mode 100644 include/blt/gfx/input.h

diff --git a/include/blt/gfx/input.h b/include/blt/gfx/input.h
new file mode 100644
index 0000000..93f3a02
--- /dev/null
+++ b/include/blt/gfx/input.h
@@ -0,0 +1,100 @@
+#pragma once
+/*
+ * Created by Brett on 15/12/23.
+ * Licensed under GNU General Public License V3.0
+ * See LICENSE file for license detail
+ */
+
+#ifndef BLT_WITH_GRAPHICS_TEMPLATE_INPUT_H
+#define BLT_WITH_GRAPHICS_TEMPLATE_INPUT_H
+
+#include <cstdint>
+#include <algorithm>
+#include <cstring>
+
+namespace blt::gfx
+{
+    enum class KEY_STATE : std::uint8_t
+    {
+        RELEASE = 0, PRESS = 1, REPEAT = 2
+    };
+    
+    enum class MOUSE_STATE : std::uint8_t
+    {
+        RELEASE = 0, PRESS = 1
+    };
+    
+    class input_manager
+    {
+        private:
+            KEY_STATE* key_state;
+            MOUSE_STATE* mouse_state;
+            std::size_t key_size = 256;
+            std::size_t mouse_size = 16;
+            
+            void expand_keys(std::size_t min)
+            {
+                auto new_size = std::max(key_size + 256, min);
+                auto* new_key = new KEY_STATE[new_size];
+                std::memset(new_key, 0, new_size * sizeof(KEY_STATE));
+                std::memcpy(new_key, key_state, key_size * sizeof(KEY_STATE));
+                delete[] key_state;
+                key_state = new_key;
+                key_size = new_size;
+            }
+            
+            void expand_mouse(std::size_t min)
+            {
+                auto new_size = std::max(mouse_size + 16, min);
+                auto* new_mouse = new MOUSE_STATE[new_size];
+                std::memset(new_mouse, 0, new_size * sizeof(MOUSE_STATE));
+                std::memcpy(new_mouse, mouse_state, mouse_size * sizeof(MOUSE_STATE));
+                delete[] mouse_state;
+                mouse_state = new_mouse;
+                mouse_size = new_size;
+            }
+        
+        public:
+            input_manager()
+            {
+                key_state = new KEY_STATE[key_size];
+                mouse_state = new MOUSE_STATE[mouse_size];
+                std::memset(key_state, 0, key_size * sizeof(KEY_STATE));
+                std::memset(mouse_state, 0, mouse_size * sizeof(MOUSE_STATE));
+            }
+            
+            KEY_STATE& key(std::size_t key)
+            {
+                if (key >= key_size)
+                    expand_keys(key);
+                return key_state[key];
+            }
+            
+            bool isKeyPressed(std::size_t key){
+                if (key >= key_size)
+                    expand_keys(key);
+                return key_state[key] != KEY_STATE::RELEASE;
+            }
+            
+            MOUSE_STATE& mouse(std::size_t mouse)
+            {
+                if (mouse >= mouse_size)
+                    expand_mouse(mouse);
+                return mouse_state[mouse];
+            }
+            
+            bool isMousePressed(std::size_t mouse){
+                if (mouse >= mouse_size)
+                    expand_mouse(mouse);
+                return mouse_state[mouse] != MOUSE_STATE::RELEASE;
+            }
+            
+            ~input_manager()
+            {
+                delete[] key_state;
+                delete[] mouse_state;
+            }
+    };
+}
+
+#endif //BLT_WITH_GRAPHICS_TEMPLATE_INPUT_H
diff --git a/libraries/BLT b/libraries/BLT
index d589056..bda044d 160000
--- a/libraries/BLT
+++ b/libraries/BLT
@@ -1 +1 @@
-Subproject commit d589056a8df584bebc8cdf0bc077613a56367221
+Subproject commit bda044de1eda8a556c5174461227ae12c8c891d3
diff --git a/src/blt/gfx/window.cpp b/src/blt/gfx/window.cpp
index f67ce87..4b2aa81 100644
--- a/src/blt/gfx/window.cpp
+++ b/src/blt/gfx/window.cpp
@@ -6,6 +6,7 @@
 #include <blt/gfx/window.h>
 #include <blt/std/assert.h>
 #include <blt/std/logging.h>
+#include <blt/gfx/input.h>
 
 void error_callback(int error, const char* description)
 {
@@ -18,9 +19,10 @@ namespace blt::gfx
     // because we aren't meant to have multiple GLFW windows (especially with GLAD) we will keep the window as global state.1
     struct
     {
-        GLFWwindow* window;
-        std::int32_t width;
-        std::int32_t height;
+        GLFWwindow* window = nullptr;
+        input_manager inputManager;
+        std::int32_t width = 0;
+        std::int32_t height = 0;
     } window_state;
     
     void create_callbacks()