PHP + Minecraft

Transcript

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

   Minecraft

2. Who am I? Thomas Berends Developer @ NetAnts, Roermond ThomasToSpace

   youtube.com/ThomasToSpace twitch.tv/ThomasToSpace

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. What is Minecraft?

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

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

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

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

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

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

    VR

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

    VR 3D Printing

35. First step: First look at the game files

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

    folder

37. 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

38. Data directory

39. Data directory • Worst name ever

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

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

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

42. What is a map?

43. What is a map?

44. What is a map?

45. map_0.dat • Notepad shows gibberish

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

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

    It’s.. NBT?

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

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

49. 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!

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

    Leaflet.js • Shows Maps made by players

51. SlimMap - Demo

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

    Maps

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

    Maps ???

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

    the file system

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

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

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

    of blocks

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

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

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

59. 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

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

    block

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

    block state: 0 Index of block in palette

62. 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

63. Minecraft Commands Extensive system that can do almost anything

64. 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

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

    /

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

    / • Redstone

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

    / • Redstone • Command line (servers-only)

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

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

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

    server

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

    server • Only needs host, port, password

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

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

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

    safe

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

    safe • Do not use default port

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

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

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

    on paid servers

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

    on paid servers • Interactive livestreams

77. Demo

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

    1 structure file to use as a base

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

    of the single block in it

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

    existing nbt file

81. What we just did Write a success message!

82. 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

83. 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

84. Questions?

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