using Raylib;
using static Raylib.Raylib;

public partial class Examples
{
    /*******************************************************************************************
    *
    *   raylib [core] example - Gestures Detection
    *
    *   This example has been created using raylib 1.4 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2016 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/
    
    
    public const #define MAX_GESTURE_STRINGS   20

    public static void Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        int screenWidth = 800;
        int screenHeight = 450;
        
        InitWindow(screenWidth, screenHeight, "raylib [core] example - gestures detection");
        
        Vector2 touchPosition = { 0, 0 };
        Rectangle touchArea = { 220, 10, screenWidth - 230, screenHeight - 20 };
        
        int gesturesCount = 0;
        char[] gestureStrings = new char[MAX_GESTURE_STRINGS][32];
    
        int currentGesture = GESTURE_NONE;
        int lastGesture = GESTURE_NONE;
        
        //SetGesturesEnabled(0b0000000000001001);   // Enable only some gestures to be detected
        
        SetTargetFPS(60);
        //--------------------------------------------------------------------------------------
    
        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            lastGesture = currentGesture;
            currentGesture = GetGestureDetected();
            touchPosition = GetTouchPosition(0);
    
            if (CheckCollisionPointRec(touchPosition, touchArea) && (currentGesture != GESTURE_NONE))
            {
                if (currentGesture != lastGesture)
                {
                    // Store gesture string
                    switch (currentGesture)
                    {
                        case GESTURE_TAP: strcpy(gestureStrings[gesturesCount], "GESTURE TAP"); break;
                        case GESTURE_DOUBLETAP: strcpy(gestureStrings[gesturesCount], "GESTURE DOUBLETAP"); break;
                        case GESTURE_HOLD: strcpy(gestureStrings[gesturesCount], "GESTURE HOLD"); break;
                        case GESTURE_DRAG: strcpy(gestureStrings[gesturesCount], "GESTURE DRAG"); break;
                        case GESTURE_SWIPE_RIGHT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE RIGHT"); break;
                        case GESTURE_SWIPE_LEFT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE LEFT"); break;
                        case GESTURE_SWIPE_UP: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE UP"); break;
                        case GESTURE_SWIPE_DOWN: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE DOWN"); break;
                        case GESTURE_PINCH_IN: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH IN"); break;
                        case GESTURE_PINCH_OUT: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH OUT"); break;
                        default: break;
                    }
                    
                    gesturesCount++;
                    
                    // Reset gestures strings
                    if (gesturesCount >= MAX_GESTURE_STRINGS)
                    {
                        for (int i = 0; i < MAX_GESTURE_STRINGS; i++) strcpy(gestureStrings[i], "\0");
                        
                        gesturesCount = 0;
                    }
                }
            }
            //----------------------------------------------------------------------------------
    
            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
    
                ClearBackground(RAYWHITE);
                
                DrawRectangleRec(touchArea, GRAY);
                DrawRectangle(225, 15, screenWidth - 240, screenHeight - 30, RAYWHITE);
                
                DrawText("GESTURES TEST AREA", screenWidth - 270, screenHeight - 40, 20, Fade(GRAY, 0.5f));
                
                for (int i = 0; i < gesturesCount; i++)
                {
                    if (i%2 == 0) DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.5f));
                    else DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.3f));
                    
                    if (i < gesturesCount - 1) DrawText(gestureStrings[i], 35, 36 + 20*i, 10, DARKGRAY);
                    else DrawText(gestureStrings[i], 35, 36 + 20*i, 10, MAROON);
                }
                
                DrawRectangleLines(10, 29, 200, screenHeight - 50, GRAY);
                DrawText("DETECTED GESTURES", 50, 15, 10, GRAY);
                
                if (currentGesture != GESTURE_NONE) DrawCircleV(touchPosition, 30, MAROON);
                
            EndDrawing();
            //----------------------------------------------------------------------------------
        }
    
        // De-Initialization
        //--------------------------------------------------------------------------------------   
        CloseWindow();        // Close window and OpenGL context
        //--------------------------------------------------------------------------------------
    }    
}