PHP + Minecraft

Transcript

1. PHP + Minecraft Doing unconventional stuff by combining PHP and

   Minecraft

2. What is Minecraft?

3. What is Minecraft?

4. What is Minecraft?

5. What is Minecraft?

6. What is Minecraft?

7. What is Minecraft?

8. What is Minecraft?

9. What is Minecraft?

10. What is Minecraft?

11. What is Minecraft?

12. What is Minecraft?

13. What is Minecraft?

14. What is Minecraft?

15. What is Minecraft?

16. What is Minecraft?

17. What is Minecraft?

18. What is Minecraft?

19. What is Minecraft?

20. What is Minecraft?

21. What is Minecraft?

22. What is Minecraft?

23. What is Minecraft?

24. What is Minecraft?

25. Two versions Bedrock • Windows • iOS • Android •

    Playstation • Xbox • Nintendo Switch Java • Windows • MacOS • Linux

26. PHP + Minecraft: Why? I like combining hobbies

27. PHP + Minecraft: Why? I like combining hobbies Programming

28. PHP + Minecraft: Why? I like combining hobbies Programming VR

29. PHP + Minecraft: Why? I like combining hobbies Programming Minecraft

    VR

30. PHP + Minecraft: Why? I like combining hobbies Programming Minecraft

    VR 3D Printing

31. PHP + Minecraft: Why? I like combining hobbies Programming Minecraft

    VR 3D Printing

32. PHP + Minecraft: Why? I like combining hobbies Programming Minecraft

    VR 3D Printing

33. PHP + Minecraft: Why? I like combining hobbies Programming Minecraft

    VR 3D Printing

34. First step: First look at the game files

35. First step: First look at the game files • Saves

    folder

36. First step: First look at the game files • Saves

    folder Each save folder has: • 9 subfolders, including the well named ‘data’ folder • icon.png, session lockfile

37. Data directory

38. Data directory • Worst name ever

39. Data directory • Worst name ever • But contains… maps?

40. Data directory • Worst name ever • But contains… maps?

    idcounts.dat map_0.dat map_1.dat map_2.dat etc.

41. What is a map?

42. What is a map?

43. What is a map?

44. map_0.dat • Notepad shows gibberish

45. map_0.dat • Notepad shows gibberish • Google to the rescue!

46. map_0.dat • Notepad shows gibberish • Google to the rescue!

    It’s.. NBT?

47. map_0.dat • Notepad shows gibberish • Google to the rescue!

    It’s.. NBT? Custom format, the map has: • colors • xCenter • zCenter • scale

48. What can we do with this? • Generate created maps

    outside of the game • Know where these are positioned • Put all of them next to each other to create a bigger map!

49. SlimMap • Open source project • Made with Symfony &

    Leaflet.js • Shows Maps made by players

50. SlimMap - Demo

51. We can get things out of the world... Minecraft Save

    Maps

52. We can get things out of the world... Minecraft Save

    Maps ???

53. Structure Blocks • Can Save parts of the world to

    the file system

54. Structure Blocks • Can Save parts of the world to

    the file system • Can Load them in from the file system

55. structure file • Ends with .nbt • Contains a set

    of blocks

56. structure file • Ends with .nbt • Contains a set

    of blocks • Also used by game itself to create structures like villages

57. structure file • Ends with .nbt • Contains a set

    of blocks • Also used by game itself to create structures like villages • Can be saved manually

58. structure file • Ends with .nbt • Contains a set

    of blocks • Also used by game itself to create structures like villages • Can be saved manually • Can be placed automatically

59. structure file blocks 0: pos: 0, 0, 0 Position of

    block

60. structure file blocks 0: pos: 0, 0, 0 Position of

    block state: 0 Index of block in palette

61. structure file blocks 0: pos: 0, 0, 0 Position of

    block state: 0 Index of block in palette palette All different blocks 0: name: minecraft:dirt

62. Minecraft Commands Extensive system that can do almost anything

63. Minecraft Commands Extensive system that can do almost anything Some

    examples: • Change weather • Kill mobs / players • Teleport mobs / players • Start / stop time • Give items, take items

64. Minecraft Commands Can be executed using • Chat, starting with

    /

65. Minecraft Commands Can be executed using • Chat, starting with

    / • Redstone

66. Minecraft Commands Can be executed using • Chat, starting with

    / • Redstone • Command line (servers-only)

67. Minecraft Commands Can be executed using • Chat, starting with

    / • Redstone • Command line (servers-only) • RCON (Send commands to a server)

68. RCON Execute Minecraft commands remotely • Send commands from any

    server

69. RCON Execute Minecraft commands remotely • Send commands from any

    server • Only needs host, port, password

70. RCON Execute Minecraft commands remotely • Send commands from any

    server • Only needs host, port, password • Composer package available

71. RCON - Security • Just a password is not that

    safe

72. RCON - Security • Just a password is not that

    safe • Do not use default port

73. RCON - Security • Just a password is not that

    safe • Do not use default port • If possible, use IP whitelisting in firewall

74. RCON - Examples Used for • Automatic whitelisting of users

    on paid servers

75. RCON - Examples Used for • Automatic whitelisting of users

    on paid servers • Interactive livestreams

76. Demo

77. What we just did Read a 1 x 1 x

    1 structure file to use as a base

78. What we just did Find the palette and change name

    of the single block in it

79. What we just did Write the new block to an

    existing nbt file

80. What we just did Write a success message!

81. Resources Repository with information https://github.com/ThomasBerends/php-minecraft Composer package reading Minecraft’s file

    format https://github.com/rickselby/NBT Composer package for RCON connections https://github.com/thedudeguy/PHP-Minecraft-Rcon

82. A last note... • Most talks get hardly any feedback

    on Joind.in • It’s one of the best things you can do to improve a conference Please take 10 minutes of your time Give feedback

83. Questions?

84. Thank you! Any feedback is welcome! Twitter: @ThomasBerends