Shipwright/OTRGui/libs/raylib/examples/shapes/shapes_bouncing_ball.c
M4xw f52a2a6406 git subrepo clone (merge) https://github.com/HarbourMasters/otrgui.git OTRGui
subrepo:
  subdir:   "OTRGui"
  merged:   "a6066a251"
upstream:
  origin:   "https://github.com/HarbourMasters/otrgui.git"
  branch:   "master"
  commit:   "a6066a251"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"
2022-03-22 02:53:51 +01:00

76 lines
2.6 KiB
C

/*******************************************************************************************
*
* raylib [shapes] example - bouncing ball
*
* This example has been created using raylib 1.0 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2013 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
int main(void)
{
// Initialization
//---------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - bouncing ball");
Vector2 ballPosition = { GetScreenWidth()/2.0f, GetScreenHeight()/2.0f };
Vector2 ballSpeed = { 5.0f, 4.0f };
int ballRadius = 20;
bool pause = 0;
int framesCounter = 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
//-----------------------------------------------------
if (IsKeyPressed(KEY_SPACE)) pause = !pause;
if (!pause)
{
ballPosition.x += ballSpeed.x;
ballPosition.y += ballSpeed.y;
// Check walls collision for bouncing
if ((ballPosition.x >= (GetScreenWidth() - ballRadius)) || (ballPosition.x <= ballRadius)) ballSpeed.x *= -1.0f;
if ((ballPosition.y >= (GetScreenHeight() - ballRadius)) || (ballPosition.y <= ballRadius)) ballSpeed.y *= -1.0f;
}
else framesCounter++;
//-----------------------------------------------------
// Draw
//-----------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawCircleV(ballPosition, (float)ballRadius, MAROON);
DrawText("PRESS SPACE to PAUSE BALL MOVEMENT", 10, GetScreenHeight() - 25, 20, LIGHTGRAY);
// On pause, we draw a blinking message
if (pause && ((framesCounter/30)%2)) DrawText("PAUSED", 350, 200, 30, GRAY);
DrawFPS(10, 10);
EndDrawing();
//-----------------------------------------------------
}
// De-Initialization
//---------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//----------------------------------------------------------
return 0;
}