[example] Input virtual controls example (#4342)

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* Update core_input_gamepad_virtual.c

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* Update and rename core_input_gamepad_virtual.c to core_virtual_Dpad.c

* Update and rename core_virtual_Dpad.c to core_input_virtual_controls.c

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* Update Makefile

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* Create core_input_virtual_controls.vcxproj

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examples/core/core_input_virtual_controls.c

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+/*******************************************************************************************
+*
+*   raylib [core] example - input virtual controls
+*
+*   Example originally created with raylib 5.0, last time updated with raylib 5.0
+*
+*   Example create by GreenSnakeLinux (@GreenSnakeLinux),
+*   lighter by oblerion (@oblerion) 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) 2024 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include <math.h>
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - input virtual controls");
+
+    const int dpadX = 90;
+    const int dpadY = 300;
+    const int dpadRad = 25;//radius of each pad
+    Color dpadColor = BLUE;
+    int dpadKeydown = -1;//-1 if not down, else 0,1,2,3 
+
+    
+    const float dpadCollider[4][2]= // collider array with x,y position
+    {
+        {dpadX,dpadY-dpadRad*1.5},//up
+        {dpadX-dpadRad*1.5,dpadY},//left
+        {dpadX+dpadRad*1.5,dpadY},//right
+        {dpadX,dpadY+dpadRad*1.5}//down
+    };
+    const char dpadLabel[4]="XYBA";//label of Dpad
+
+    float playerX=100;
+    float playerY=100;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+	// Update 
+	//--------------------------------------------------------------------------
+        dpadKeydown = -1; //reset
+        float inputX=0;
+        float inputY=0;
+        if(GetTouchPointCount()>0)
+        {//use touch pos
+            inputX = GetTouchX();
+            inputY = GetTouchY();
+        }
+        else
+        {//use mouse pos
+            inputX = GetMouseX();
+            inputY = GetMouseY();
+        }
+        for(int i=0;i<4;i++)
+        {
+            //test distance each collider and input < radius
+            if( fabsf(dpadCollider[i][1]-inputY) + fabsf(dpadCollider[i][0]-inputX) < dpadRad)
+            {
+                dpadKeydown = i;
+                break;
+            }
+        }
+        // move player
+        switch(dpadKeydown){
+            case 0: playerY -= 50*GetFrameTime();
+            break;
+            case 1: playerX -= 50*GetFrameTime();
+            break;
+            case 2: playerX += 50*GetFrameTime();
+            break;
+            case 3: playerY += 50*GetFrameTime();
+            default:;
+        };
+	//--------------------------------------------------------------------------
+	    
+	// Draw 
+	//--------------------------------------------------------------------------
+       BeginDrawing();
+            ClearBackground(RAYWHITE);
+            for(int i=0;i<4;i++)
+            {
+                //draw all pad
+                DrawCircle(dpadCollider[i][0],dpadCollider[i][1],dpadRad,dpadColor);
+                if(i!=dpadKeydown)
+                {
+                    //draw label
+                    DrawText(TextSubtext(dpadLabel,i,1),
+                             dpadCollider[i][0]-5,
+                             dpadCollider[i][1]-5,16,BLACK);
+                }
+
+            }
+            DrawText("Player",playerX,playerY,16,BLACK);
+        EndDrawing();
+	//--------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+