ADDED: example: `core_input_actions` (#5211)

* adding core_input_actions

action based input API vs direct input, allows remapping of buttons or keys to an action.

* adjusted formatting.

* updates for struct name

and fixed a typo

examples/Makefile

@@ -524,6 +524,7 @@ CORE = \
     core/core_input_mouse_wheel \
     core/core_input_multitouch \
     core/core_input_virtual_controls \
+    core/core_input_actions \
     core/core_random_sequence \
     core/core_random_values \
     core/core_render_texture \

examples/core/core_input_actions.c

@@ -0,0 +1,174 @@
+
+/*******************************************************************************************
+*
+*   raylib [core_inputactionInputs] example - presents a simple API for remapping input to actions 
+*
+*   Example complexity rating: [★☆☆☆] 1/4
+*
+*   Example originally created with raylib 5.5, last time updated with raylib 5.6
+*
+*   Example contributed by MonstersGoBoom and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2025 MonstersGoBoom
+*
+********************************************************************************************/
+
+/*
+    Simple example for decoding input as actions, allowing remapping of input to different keys or gamepad buttons.
+    for example instead of 
+        IsKeyDown(KEY_LEFT)
+    you'd use
+        IsActionDown(ACTION_LEFT)
+    which can be reassigned to e.g. KEY_A and also assigned to a gamepad button. the action will trigger with either gamepad or keys 
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include "raylib.h"
+
+//  add your own action types here
+
+typedef enum ActionType
+{
+    NO_ACTION,
+    ACTION_UP,
+    ACTION_DOWN,
+    ACTION_LEFT,
+    ACTION_RIGHT,
+    ACTION_FIRE,
+    MAX_ACTION
+} ActionType;
+
+//  struct for key and button inputs
+typedef struct ActionInput
+{
+    int key;
+    int button;
+} ActionInput;
+
+//  gamepad index, change this if you have multiple gamepads. 
+int gamepadIndex = 0;
+static ActionInput actionInputs[MAX_ACTION] = {0};
+
+//  combines IsKeyPressed and IsGameButtonPressed to one action
+bool isActionPressed(int action)
+{
+    if (action<MAX_ACTION)
+        return (IsKeyPressed(actionInputs[action].key) || IsGamepadButtonPressed(gamepadIndex, actionInputs[action].button));
+    return (false);
+}
+
+//  combines IsKeyReleased and IsGameButtonReleased to one action
+bool isActionReleased(int action)
+{
+    if (action<MAX_ACTION)  
+        return (IsKeyReleased(actionInputs[action].key) || IsGamepadButtonReleased(gamepadIndex, actionInputs[action].button));
+    return (false);
+}
+
+//  combines IsKeyDown and IsGameButtonDown to one action
+bool isActionDown(int action) 
+{
+    if (action<MAX_ACTION)  
+        return (IsKeyDown(actionInputs[action].key) || IsGamepadButtonDown(gamepadIndex, actionInputs[action].button));
+    return (false);
+}
+//  define the "default" keyset. here WASD and gamepad buttons on the left side for movement
+void DefaultActions()
+{
+    actionInputs[ACTION_UP].key = KEY_W;
+    actionInputs[ACTION_DOWN].key = KEY_S;
+    actionInputs[ACTION_LEFT].key = KEY_A;
+    actionInputs[ACTION_RIGHT].key = KEY_D;
+    actionInputs[ACTION_FIRE].key = KEY_SPACE;
+
+    actionInputs[ACTION_UP].button = GAMEPAD_BUTTON_LEFT_FACE_UP;
+    actionInputs[ACTION_DOWN].button = GAMEPAD_BUTTON_LEFT_FACE_DOWN;
+    actionInputs[ACTION_LEFT].button = GAMEPAD_BUTTON_LEFT_FACE_LEFT;
+    actionInputs[ACTION_RIGHT].button = GAMEPAD_BUTTON_LEFT_FACE_RIGHT;
+    actionInputs[ACTION_FIRE].button = GAMEPAD_BUTTON_RIGHT_FACE_DOWN;
+}
+
+//  define the "alternate" keyset. here Cursor Keys and gamepad buttons on the right side for movement
+void CursorActions()
+{
+    actionInputs[ACTION_UP].key = KEY_UP;
+    actionInputs[ACTION_DOWN].key = KEY_DOWN;
+    actionInputs[ACTION_LEFT].key = KEY_LEFT;
+    actionInputs[ACTION_RIGHT].key = KEY_RIGHT;
+    actionInputs[ACTION_FIRE].key = KEY_SPACE;
+
+    actionInputs[ACTION_UP].button = GAMEPAD_BUTTON_RIGHT_FACE_UP;
+    actionInputs[ACTION_DOWN].button = GAMEPAD_BUTTON_RIGHT_FACE_DOWN;
+    actionInputs[ACTION_LEFT].button = GAMEPAD_BUTTON_RIGHT_FACE_LEFT;
+    actionInputs[ACTION_RIGHT].button = GAMEPAD_BUTTON_RIGHT_FACE_RIGHT;
+    actionInputs[ACTION_FIRE].button = GAMEPAD_BUTTON_LEFT_FACE_DOWN;
+}
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+
+int main(int argc, char **argv)
+{
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - input via actions");
+    SetWindowState(FLAG_WINDOW_RESIZABLE);
+    SetTargetFPS(60);
+
+    //  set default actions 
+    char actionSet = 0;
+    DefaultActions();
+
+    Vector2 position = (Vector2){100, 100};
+    Vector2 size = (Vector2){32, 32};
+
+    while (!WindowShouldClose()) // Detect window close button or ESC key
+    {
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+        ClearBackground(DARKGRAY);
+        DrawText(actionSet == 0 ? "WASD Default Set" : "Cursor Set", 0, 0, 18, WHITE);
+        DrawText("Tab key toggles keyset", 0, 18, 18, WHITE);
+        DrawRectangleV(position, size, RED);
+        EndDrawing();
+
+        gamepadIndex = 0; //  set this to gamepad being checked
+        if (isActionDown(ACTION_UP))
+            position.y -= 2;
+        if (isActionDown(ACTION_DOWN))
+            position.y += 2;
+        if (isActionDown(ACTION_LEFT))
+            position.x -= 2;
+        if (isActionDown(ACTION_RIGHT))
+            position.x += 2;
+        if (isActionPressed(ACTION_FIRE))
+        {
+            position.x = (screenWidth-size.x)/2;
+            position.y = (screenHeight-size.y)/2;
+        }
+
+        //  switch control scheme by pressing TAB 
+        if (IsKeyPressed(KEY_TAB))
+        {
+            actionSet = !actionSet;
+            if (actionSet == 0)
+                DefaultActions();
+            else
+                CursorActions();
+        }
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------    
+    CloseWindow(); // Close window and OpenGL context
+    return 0;
+}