rayjs/examples/core/core_input_multitouch.c

80 lines
3.3 KiB
C

/*******************************************************************************************
*
* raylib [core] example - Input multitouch
*
* Example originally created with raylib 2.1, last time updated with raylib 2.5
*
* Example contributed by Berni (@Berni8k) 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) 2019-2023 Berni (@Berni8k) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#define MAX_TOUCH_POINTS 10
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [core] example - input multitouch");
Vector2 touchPositions[MAX_TOUCH_POINTS] = { 0 };
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//---------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// Get the touch point count ( how many fingers are touching the screen )
int tCount = GetTouchPointCount();
// Clamp touch points available ( set the maximum touch points allowed )
if(tCount > MAX_TOUCH_POINTS) tCount = MAX_TOUCH_POINTS;
// Get touch points positions
for (int i = 0; i < tCount; ++i) touchPositions[i] = GetTouchPosition(i);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
for (int i = 0; i < tCount; ++i)
{
// Make sure point is not (0, 0) as this means there is no touch for it
if ((touchPositions[i].x > 0) && (touchPositions[i].y > 0))
{
// Draw circle and touch index number
DrawCircleV(touchPositions[i], 34, ORANGE);
DrawText(TextFormat("%d", i), (int)touchPositions[i].x - 10, (int)touchPositions[i].y - 70, 40, BLACK);
}
}
DrawText("touch the screen at multiple locations to get multiple balls", 10, 10, 20, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}