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Add Support for custom Key Callbacks in Input class #53

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Add Support for custom Key Callbacks in Input class #53

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2003679
Adding KeyPressed
jchionh Jul 23, 2023
27d8d1b
Adding Key callback event
jchionh Jul 23, 2023
d37b7e0
map of functions
jchionh Jul 23, 2023
41767c2
Fixed Input Key callback
jchionh Jul 23, 2023
a31263b
Support KeyPress repeat too
jchionh Jul 23, 2023
7b3ba4f
Fixup include ordering
jchionh Jul 23, 2023
1f4fa1d
Rename static variable to follow proper case
jchionh Jul 23, 2023
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25 changes: 25 additions & 0 deletions Walnut/src/Walnut/Input/Input.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,31 @@

namespace Walnut {

std::unordered_map<int, std::function<void()>> Input::s_KeyCallbackMap;

void KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action == GLFW_PRESS || action == GLFW_REPEAT)
{
auto funcIter = Input::s_KeyCallbackMap.find(key);
if (funcIter != Input::s_KeyCallbackMap.end())
{
funcIter->second();
}
}
}

void Input::InitKeysCallBack()
{
GLFWwindow* windowHandle = Application::Get().GetWindowHandle();
glfwSetKeyCallback(windowHandle, KeyCallback);
}

void Input::SetKeyCallback(KeyCode keycode, std::function<void()> func)
{
s_KeyCallbackMap[(int)keycode] = func;
}

bool Input::IsKeyDown(KeyCode keycode)
{
GLFWwindow* windowHandle = Application::Get().GetWindowHandle();
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9 changes: 9 additions & 0 deletions Walnut/src/Walnut/Input/Input.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2,19 +2,28 @@

#include "KeyCodes.h"

#include <functional>
#include <unordered_map>
#include <glm/glm.hpp>

namespace Walnut {

class Input
{
public:
static void InitKeysCallBack();

static void SetKeyCallback(KeyCode keycode, std::function<void()> func);
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I would suggest to pass the KeyCode to the callback, so that one function could be used for multiple keys.


static bool IsKeyDown(KeyCode keycode);

static bool IsMouseButtonDown(MouseButton button);

static glm::vec2 GetMousePosition();

static void SetCursorMode(CursorMode mode);

static std::unordered_map<int, std::function<void()>> s_KeyCallbackMap;
};

}