HitboxChanger

Sourcemod extension to provide the ability to edit the hitbox of a model from memory to a sourcemod plugin. It is necesary to use the custom hl2sdk-csgo as it has been extensively modeified to allow for this to work.

Forum thread here: https://forums.alliedmods.net/showthread.php?t=329554

Capabilities

This extension provides natives with the ability to modify the hitboxes of a model without recompilation.

• You can modify the hitboxes:
  • Bone
  • Group
  • Min Point
  • Max Point
  • Angle
  • Radius
  • And you can also get all of this info from a hitbox.
• Change the number of hitboxes in the hitboxset.
  • You can not change this beyond the amount of hitboxes the model originally had, however you can make it less than or even negative values.
  • Use GetNumHitboxes first so you can get the max number you can set without crashing.
• Print debug info about a models hitboxes to server console.
• Print debug info about a models bones to server console.
• Print a list of valid bones/bone names for use as a hitbox bone.
• Get a bones index by its name.

Natives

• HitboxInfo Print all the hitboxes to server console.
• BoneInfo Print all the bones to server console.
• SetHitbox Set the properties at a hitbox index.
• GetHitbox Get the properties at a hitbox index.
• SetNumHitboxes Set the number of hitboxes for a model.
• GetNumHitboxes Get the number of hitboxes for a model.
• FindBone Find a bone's index in a model by name.
• FindValidBones Print a list of the bones in a model which can have a hitbox attached.

Hitbox Enum Struct

There is also a sourcepawn enum struct included in the native, to provide an easy method of hitbox reuse. Includes methods to copy the attributes to and from a model by using the structs data, as well as to print the data stored in the struct to server console.

Building

• Place the hitbox_changer directory in your sourcemod 1.10 public directory.
• hitboxchanger-hl2sdk-csgo should be adjacent to your sourcemod directory, as should metamod 1.10.
• Run configure.py from sourcemod/public/hitbox_changer/build. Use CC=clang CXX=clang++ python3 ../configure.py on linux.
• Run ambuild from build dir
• Windows
  • Use the Visual Studio Developer Command Prompt.
  • Currently Seems to crash at least when trying to get the StudioHDR of a model
  • No longer crashes on windows, thanks peace-maker.

Notes

• The source code can be found in /sourcemod/public/hitbox_changer.
• You must build against the included modified hl2sdk-csgo for this to work.
• A hitboxes bone must have the BONE_USED_BY_HITBOX flag set, I am currently unable to set this, so it is error checked and setting to an invalid bone will fail.
• It should not take too much work to modify the extension for use in another source game, mainly removal of capsule code, but I currently have no means of testing for another game and no incentive, so feel free to release a modified version for other games.

Zombie Reloaded

Note: This extension is now included in the latest version of ZR, if you have the latest version, this is already done, just add the extension.

If you are using the ZR plugin, and want to remove human hitboxes for a performance boost, simply alter the zr/models.inc file to include the extension and edit the ModelsPrecache function to be:

/**
 * Precaches all models.
 */
ModelsPrecache()
{
    decl String:file[PLATFORM_MAX_PATH];

    // Loop through all models, build full path and cache them.
    for (new model = 0; model < ModelCount; model++)
    {
        ModelsGetFullPath(model, file, sizeof(file));
        int modelIndex = PrecacheModel(file);
        if((modelIndex != 0) && (ModelData[model][Model_Team] == ModelTeam_Humans))
            SetNumHitboxes(modelIndex, -1);
    }
}