1 /*******************************************************************************************
2 *
3 * raylib [core] example - Input Gestures Detection
4 *
5 * This example has been created using raylib 1.4 (www.raylib.com)
6 * raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
7 *
8 * Copyright (c) 2016 Ramon Santamaria (@raysan5)
9 *
10 ********************************************************************************************/
11
12 #include "raylib.h"
13 #include <string.h>
14
15 #define MAX_GESTURE_STRINGS 20
16
main(void)17 int main(void)
18 {
19 // Initialization
20 //--------------------------------------------------------------------------------------
21 const int screenWidth = 800;
22 const int screenHeight = 450;
23
24 InitWindow(screenWidth, screenHeight, "raylib [core] example - input gestures");
25
26 Vector2 touchPosition = { 0, 0 };
27 Rectangle touchArea = { 220, 10, screenWidth - 230.0f, screenHeight - 20.0f };
28
29 int gesturesCount = 0;
30 char gestureStrings[MAX_GESTURE_STRINGS][32];
31
32 int currentGesture = GESTURE_NONE;
33 int lastGesture = GESTURE_NONE;
34
35 //SetGesturesEnabled(0b0000000000001001); // Enable only some gestures to be detected
36
37 SetTargetFPS(60); // Set our game to run at 60 frames-per-second
38 //--------------------------------------------------------------------------------------
39
40 // Main game loop
41 while (!WindowShouldClose()) // Detect window close button or ESC key
42 {
43 // Update
44 //----------------------------------------------------------------------------------
45 lastGesture = currentGesture;
46 currentGesture = GetGestureDetected();
47 touchPosition = GetTouchPosition(0);
48
49 if (CheckCollisionPointRec(touchPosition, touchArea) && (currentGesture != GESTURE_NONE))
50 {
51 if (currentGesture != lastGesture)
52 {
53 // Store gesture string
54 switch (currentGesture)
55 {
56 case GESTURE_TAP: strcpy(gestureStrings[gesturesCount], "GESTURE TAP"); break;
57 case GESTURE_DOUBLETAP: strcpy(gestureStrings[gesturesCount], "GESTURE DOUBLETAP"); break;
58 case GESTURE_HOLD: strcpy(gestureStrings[gesturesCount], "GESTURE HOLD"); break;
59 case GESTURE_DRAG: strcpy(gestureStrings[gesturesCount], "GESTURE DRAG"); break;
60 case GESTURE_SWIPE_RIGHT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE RIGHT"); break;
61 case GESTURE_SWIPE_LEFT: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE LEFT"); break;
62 case GESTURE_SWIPE_UP: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE UP"); break;
63 case GESTURE_SWIPE_DOWN: strcpy(gestureStrings[gesturesCount], "GESTURE SWIPE DOWN"); break;
64 case GESTURE_PINCH_IN: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH IN"); break;
65 case GESTURE_PINCH_OUT: strcpy(gestureStrings[gesturesCount], "GESTURE PINCH OUT"); break;
66 default: break;
67 }
68
69 gesturesCount++;
70
71 // Reset gestures strings
72 if (gesturesCount >= MAX_GESTURE_STRINGS)
73 {
74 for (int i = 0; i < MAX_GESTURE_STRINGS; i++) strcpy(gestureStrings[i], "\0");
75
76 gesturesCount = 0;
77 }
78 }
79 }
80 //----------------------------------------------------------------------------------
81
82 // Draw
83 //----------------------------------------------------------------------------------
84 BeginDrawing();
85
86 ClearBackground(RAYWHITE);
87
88 DrawRectangleRec(touchArea, GRAY);
89 DrawRectangle(225, 15, screenWidth - 240, screenHeight - 30, RAYWHITE);
90
91 DrawText("GESTURES TEST AREA", screenWidth - 270, screenHeight - 40, 20, Fade(GRAY, 0.5f));
92
93 for (int i = 0; i < gesturesCount; i++)
94 {
95 if (i%2 == 0) DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.5f));
96 else DrawRectangle(10, 30 + 20*i, 200, 20, Fade(LIGHTGRAY, 0.3f));
97
98 if (i < gesturesCount - 1) DrawText(gestureStrings[i], 35, 36 + 20*i, 10, DARKGRAY);
99 else DrawText(gestureStrings[i], 35, 36 + 20*i, 10, MAROON);
100 }
101
102 DrawRectangleLines(10, 29, 200, screenHeight - 50, GRAY);
103 DrawText("DETECTED GESTURES", 50, 15, 10, GRAY);
104
105 if (currentGesture != GESTURE_NONE) DrawCircleV(touchPosition, 30, MAROON);
106
107 EndDrawing();
108 //----------------------------------------------------------------------------------
109 }
110
111 // De-Initialization
112 //--------------------------------------------------------------------------------------
113 CloseWindow(); // Close window and OpenGL context
114 //--------------------------------------------------------------------------------------
115 }