weapon_custom_melee

Melee attacks are very similar to bullets. The difference is that collision detection is a little different (cube-shaped instead of a line) and the tracers and impact particles aren't created.

I was too lazy to create another entity, so this one also includes keyvalues for hooks (like the grapple gun uses). I separated those keys out into another table since they don't really belong in a melee weapon.

Keyvalues:

Keyvalue Value Type	Description
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Melee Strikes integer	Number of strikes to make for a single shot.
Melee Burst Fire Delay integer	If Melee Strikes is greater than 1, this will be the delay between strikes when firing a single burst.
Impact Decal integer	Impact decal shown on solid surfaces.
Melee Hit Sounds List of weapon_custom_sounds	Sounds made when striking a solid surface or machine. Chosen randomly.
Melee Hit Flesh Sounds List of weapon_custom_sounds	Sounds made when striking a monster or player. Chosen randomly.
Melee Hit Animations List of integers	Animations played when the melee attack hits something (uses Shoot Animations otherwise). Chosen sequentially.
Melee Miss Cooldown float	Time to wait if the melee attack does not hit anything (uses Cooldown otherwise).
Melee Impact World Effect weapon_custom_effect	Effect spawned when hitting a solid surface.
Melee Impact Monster Effect weapon_custom_effect	Effect spawned when hitting a monster.

Hook Keyvalues:

Keyvalue Value Type	Description
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Hook Type integer	Enable/Disable the hook functionality.
Hook Targets integer	Type of surface that can be hooked on to.
Hook Pull Force float	Pull force of the hook, applied every frame.
Hook Max User Speed float	Maximum speed of the player while hooked.
Hook Projectile Speed float	Initial speed of the hook when shot.
Hook Extend Sound weapon_custom_user_sound	Sound played while the hook is extending.
Hook Extend Animation integer	Animation played while the hook is extending.
Hook Extend Anim/Sound Delay float	Time after shooting to play the extend animation and sound. Usually you set this to the length of the shoot animation.
Hook Retract Sound weapon_custom_sound	Sound to play when the hook has been released.
Hook Retract Animation integer	Animation to play when the hook has been released.
Hook Retract Idle Delay float	Time after releasing the hook to play an idle animation. Usually you set this to the length of the retract animation.
Hook End Model string	Model to display at the tip of the hook.
Hook End Sprite string	Sprite to display at the tip of the hook.
Hook Texture Filter string	When hooking to a solid surface, the hook will not attach unless the texture name begins with this value (e.g. "xeno_grapple").
Hook Beam Style integer	Style of the hook beam.
Hook Beam Sprite string	Sprite used as a texture for the hook beam.
Hook Beam Color Color	Color and opacity of the hook beam.
Hook Beam Width integer	Size of the hook beam.
Hook Beam Noise integer	Distortion of the hook beam.
Hook Beam Scroll Rate integer	Texture scroll speed of the hook beam.

See the Shoot Entities page for the common keyvalues and flags that this entity uses.