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147 lines
6.1 KiB
147 lines
6.1 KiB
/*******************************************************************************************
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*
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* raylib [core] example - Gestures Detection (adapted for HTML5 platform)
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*
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* This example has been created using raylib 1.4 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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*
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* Copyright (c) 2015 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#include <string.h>
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#if defined(PLATFORM_WEB)
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#include <emscripten/emscripten.h>
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#endif
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#define MAX_GESTURE_STRINGS 20
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//----------------------------------------------------------------------------------
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// Global Variables Definition
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//----------------------------------------------------------------------------------
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int screenWidth = 800;
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int screenHeight = 450;
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Vector2 touchPosition;
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Rectangle touchArea;
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int gesturesCount = 0;
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char gestureStrings[MAX_GESTURE_STRINGS][32];
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int currentGesture = GESTURE_NONE;
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int lastGesture = GESTURE_NONE;
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//----------------------------------------------------------------------------------
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// Module Functions Declaration
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void); // Update and Draw one frame
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//----------------------------------------------------------------------------------
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// Main Enry Point
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//----------------------------------------------------------------------------------
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int main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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InitWindow(screenWidth, screenHeight, "raylib [core] example - Gestures Detection");
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touchPosition = (Vector2){ 0, 0 };
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touchArea = (Rectangle){ 220, 10, screenWidth - 230, screenHeight - 20 };
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//SetGesturesEnabled(0b0000000000001001); // Enable only some gestures to be detected
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#if defined(PLATFORM_WEB)
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emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
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#else
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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UpdateDrawFrame();
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}
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#endif
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void)
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{
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// Update
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//----------------------------------------------------------------------------------
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lastGesture = currentGesture;
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currentGesture = GetGestureDetected();
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touchPosition = GetTouchPosition(0);
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if (CheckCollisionPointRec(touchPosition, touchArea) && (currentGesture != GESTURE_NONE))
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{
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if (currentGesture != lastGesture)
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{
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// Store gesture string
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switch (currentGesture)
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{
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case GESTURE_TAP: strcpy(gestureStrings[gesturesCount], "GESTURE TAP"); break;
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case GESTURE_DOUBLETAP: strcpy(gestureStrings[gesturesCount], "GESTURE DOUBLETAP"); break;
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case GESTURE_HOLD: strcpy(gestureStrings[gesturesCount], "GESTURE HOLD"); break;
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case GESTURE_DRAG: strcpy(gestureStrings[gesturesCount], "GESTURE DRAG"); break;
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case GESTURE_SWIPE_RIGHT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE RIGHT"); break;
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case GESTURE_SWIPE_LEFT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE LEFT"); break;
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case GESTURE_SWIPE_UP: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE UP"); break;
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case GESTURE_SWIPE_DOWN: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE DOWN"); break;
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case GESTURE_PINCH_IN: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH IN"); break;
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case GESTURE_PINCH_OUT: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH OUT"); break;
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default: break;
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}
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gesturesCount++;
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// Reset gestures strings
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if (gesturesCount >= MAX_GESTURE_STRINGS)
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{
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for (int i = 0; i < MAX_GESTURE_STRINGS; i++) strcpy(gestureStrings[i], "\0");
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gesturesCount = 0;
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}
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}
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawRectangleRec(touchArea, GRAY);
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DrawRectangle(225, 15, screenWidth - 240, screenHeight - 30, RAYWHITE);
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DrawText("GESTURES TEST AREA", screenWidth - 270, screenHeight - 40, 20, Fade(GRAY, 0.5f));
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for (int i = 0; i < gesturesCount; i++)
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{
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if (i%2 == 0) DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.5f));
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else DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.3f));
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if (i < gesturesCount - 1) DrawText(gestureStrings[i], 35, 36 + 20*i, 10, DARKGRAY);
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else DrawText(gestureStrings[i], 35, 36 + 20*i, 10, MAROON);
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}
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DrawRectangleLines(10, 29, 200, screenHeight - 50, GRAY);
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DrawText("DETECTED GESTURES", 50, 15, 10, GRAY);
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if (currentGesture != GESTURE_NONE) DrawCircleV(touchPosition, 30, MAROON);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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