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Diffstat (limited to 'examples/src/shapes/shapes_bouncing_ball.c')
| -rw-r--r-- | examples/src/shapes/shapes_bouncing_ball.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/examples/src/shapes/shapes_bouncing_ball.c b/examples/src/shapes/shapes_bouncing_ball.c new file mode 100644 index 0000000..6b27c9d --- /dev/null +++ b/examples/src/shapes/shapes_bouncing_ball.c @@ -0,0 +1,76 @@ +/******************************************************************************************* +* +* 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() +{ + // Initialization + //--------------------------------------------------------- + const int screenWidth = 800; + const int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [shapes] example - bouncing ball"); + + Vector2 ballPosition = { GetScreenWidth()/2, GetScreenHeight()/2 }; + Vector2 ballSpeed = { 5.0f, 4.0f }; + int ballRadius = 20; + + bool pause = 0; + int framesCounter = 0; + + SetTargetFPS(60); + //---------------------------------------------------------- + + // 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, 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; +}
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