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/*******************************************************************************************
*
* raylib [core] example - Gestures Detection (adapted for HTML5 platform)
*
* 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) 2015 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#include <string.h>
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define MAX_GESTURE_STRINGS 20
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
Vector2 touchPosition;
Rectangle touchArea;
int gesturesCount = 0;
char gestureStrings[MAX_GESTURE_STRINGS][32];
int currentGesture = GESTURE_NONE;
int lastGesture = GESTURE_NONE;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Main Enry Point
//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [core] example - Gestures Detection");
touchPosition = (Vector2){ 0, 0 };
touchArea = (Rectangle){ 220, 10, screenWidth - 230, screenHeight - 20 };
//SetGesturesEnabled(0b0000000000001001); // Enable only some gestures to be detected
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// 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();
//----------------------------------------------------------------------------------
}
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