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raylib-src/examples/core_input_keys.lua

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Add raylib lua examples
8 years ago
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  1. -------------------------------------------------------------------------------------------
  2. --
  3. --  raylib [core] example - Keyboard input
  4. --
  5. --  This example has been created using raylib 1.6 (www.raylib.com)
  6. --  raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
  7. --
  8. --  Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
  9. --
  10. -------------------------------------------------------------------------------------------
  11. 

  12. -- Initialization
  13. -------------------------------------------------------------------------------------------
  14. local screenWidth = 800
  15. local screenHeight = 450
  16. 

  17. InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window")
  18. 

  19. local ballPosition = Vector2(screenWidth/2, screenHeight/2)
  20. 

  21. SetTargetFPS(60)                -- Set target frames-per-second
  22. -------------------------------------------------------------------------------------------
  23. 

  24. -- Main game loop
  25. while not WindowShouldClose() do                -- Detect window close button or ESC key
  26.     -- Update
  27.     ---------------------------------------------------------------------------------------
  28.     if (IsKeyDown(KEY.RIGHT)) then ballPosition.x = ballPosition.x + 0.8 end
  29.     if (IsKeyDown(KEY.LEFT)) then ballPosition.x = ballPosition.x - 0.8 end
  30.     if (IsKeyDown(KEY.UP)) then ballPosition.y = ballPosition.y - 0.8 end
  31.     if (IsKeyDown(KEY.DOWN)) then ballPosition.y = ballPosition.y + 0.8 end
  32.     ---------------------------------------------------------------------------------------
  33. 

  34.     -- Draw
  35.     ---------------------------------------------------------------------------------------
  36.     BeginDrawing()
  37. 

  38.         ClearBackground(RAYWHITE)
  39. 

  40.         DrawText("move the ball with arrow keys", 10, 10, 20, DARKGRAY)
  41. 

  42.         DrawCircleV(ballPosition, 50, MAROON)
  43. 

  44.     EndDrawing()
  45.     ---------------------------------------------------------------------------------------
  46. end
  47. 

  48. -- De-Initialization
  49. -------------------------------------------------------------------------------------------
  50. CloseWindow()           -- Close window and OpenGL context
  51. -------------------------------------------------------------------------------------------