[
    {
        "name": "ParticleOrientation",
        "options": [
            "screen facing",
            "parallel to direction",
            "perpendicular to direction"
        ],
        "type": "enum"
    },
    {
        "name": "ParticleAnchor",
        "options": [
            "with primary",
            "with screen space",
            "zsprite"
        ],
        "type": "enum"
    },
    {
        "name": "ParticleFlags",
        "type": "bitfield",
        "fields": [
            "can animate backwards",
            "animation stops at rest",
            "animation starts on random frame",
            "animate once per frame",
            "dies at rest",
            "dies on contact with structure",
            "tint from diffuse texture",
            "dies on contact with water",
            "dies on contact with air",
            "self illuminated",
            "random horizontal mirroring",
            "random vertical mirroring"
        ],
        "width": 32
    },
    {
        "name": "ParticleShaderFlags",
        "type": "bitfield",
        "fields": [
            "sort bias",
            "nonlinear tint",
            "don't overdraw fp weapon"
        ],
        "width": 16
    },
    {
        "name": "Particle",
        "fields": [
            {
                "name": "flags",
                "type": "ParticleFlags"
            },
            {
                "name": "bitmap",
                "type": "TagReference",
                "non_null": true,
                "groups": [
                    "bitmap"
                ]
            },
            {
                "name": "physics",
                "type": "TagReference",
                "groups": [
                    "point_physics"
                ]
            },
            {
                "name": "sir marty exchanged his children for thine",
                "type": "TagReference",
                "groups": [
                    "material_effects"
                ]
            },
            {
                "type": "pad",
                "size": 4
            },
            {
                "name": "lifespan",
                "bounds": true,
                "unit": "seconds",
                "type": "float"
            },
            {
                "name": "fade in time",
                "type": "float"
            },
            {
                "name": "fade out time",
                "type": "float"
            },
            {
                "name": "collision effect",
                "type": "TagReference",
                "groups": [
                    "sound",
                    "effect"
                ]
            },
            {
                "name": "death effect",
                "type": "TagReference",
                "groups": [
                    "sound",
                    "effect"
                ]
            },
            {
                "name": "minimum size",
                "unit": "pixels",
                "type": "float"
            },
            {
                "type": "pad",
                "size": 8,
                "comment": "on some (probably older) tags like effects/particles/energy/smoke c generic.particle, this is floats 2.0 and 1.0, but these tags can't be replicated in the HEK"
            },
            {
                "name": "radius animation",
                "bounds": true,
                "type": "float",
                "default": [
                    1.0,
                    1.0
                ]
            },
            {
                "type": "pad",
                "size": 4
            },
            {
                "name": "animation rate",
                "bounds": true,
                "unit": "frames per second",
                "type": "float"
            },
            {
                "name": "contact deterioration",
                "type": "float",
                "non_cached": true,
                "comment": "this value is totally broken and locks the game up if it's non-zero; even tool.exe sets it to zero",
                "hidden": true
            },
            {
                "name": "fade start size",
                "unit": "pixels",
                "type": "float",
                "default": 5.0
            },
            {
                "name": "fade end size",
                "unit": "pixels",
                "type": "float",
                "default": 4.0
            },
            {
                "type": "pad",
                "size": 4
            },
            {
                "name": "first sequence index",
                "type": "Index"
            },
            {
                "name": "initial sequence count",
                "type": "int16"
            },
            {
                "name": "looping sequence count",
                "type": "int16"
            },
            {
                "name": "final sequence count",
                "type": "int16"
            },
            {
                "type": "pad",
                "size": 8
            },
            {
                "name": "sprite size",
                "type": "float",
                "cache_only": true
            },
            {
                "name": "orientation",
                "type": "ParticleOrientation"
            },
            {
                "type": "pad",
                "size": 2
            },
            {
                "type": "pad",
                "size": 36
            },
            {
                "name": "make it actually work",
                "type": "uint32",
                "cache_only": true
            },
            {
                "name": "shader flags",
                "type": "ParticleShaderFlags"
            },
            {
                "name": "framebuffer blend function",
                "type": "FramebufferBlendFunction"
            },
            {
                "name": "framebuffer fade mode",
                "type": "FramebufferFadeMode"
            },
            {
                "name": "map flags",
                "type": "IsUnfilteredFlag"
            },
            {
                "type": "pad",
                "size": 28
            },
            {
                "name": "secondary bitmap",
                "type": "TagReference",
                "groups": [
                    "bitmap"
                ]
            },
            {
                "name": "anchor",
                "type": "ParticleAnchor"
            },
            {
                "name": "secondary map flags",
                "type": "IsUnfilteredFlag"
            },
            {
                "name": "u animation source",
                "type": "FunctionOut"
            },
            {
                "name": "u animation function",
                "type": "WaveFunction"
            },
            {
                "unit": "seconds",
                "name": "u animation period",
                "type": "float"
            },
            {
                "name": "u animation phase",
                "type": "float"
            },
            {
                "name": "u animation scale",
                "unit": "repeats",
                "type": "float"
            },
            {
                "name": "v animation source",
                "type": "FunctionOut"
            },
            {
                "name": "v animation function",
                "type": "WaveFunction"
            },
            {
                "name": "v animation period",
                "unit": "seconds",
                "type": "float"
            },
            {
                "name": "v animation phase",
                "type": "float"
            },
            {
                "name": "v animation scale",
                "unit": "repeats",
                "type": "float"
            },
            {
                "name": "rotation animation source",
                "type": "FunctionOut"
            },
            {
                "name": "rotation animation function",
                "type": "WaveFunction"
            },
            {
                "name": "rotation animation period",
                "unit": "seconds",
                "type": "float"
            },
            {
                "name": "rotation animation phase",
                "type": "float"
            },
            {
                "name": "rotation animation scale",
                "unit": "degrees",
                "type": "float"
            },
            {
                "name": "rotation animation center",
                "type": "Point2D"
            },
            {
                "type": "pad",
                "size": 4
            },
            {
                "name": "zsprite radius scale",
                "type": "float"
            },
            {
                "type": "pad",
                "size": 20
            }
        ],
        "type": "struct",
        "size": 356,
        "group": "particle",
        "needs_preprocessed": true,
        "needs_postprocessed": true
    }
]