Source.Python forums

Hello scripters . Could i get a Grenade trail that the color of the trail changes color every now and then?. Thank you for your help on all the scripts i get from here

This plugin does the trail, and it should work for HL2DM, but not necessarily with the changing color feature:

viewtopic.php?f=7&t=1806

Do you mean the same trail mid arch changes color or just player 1 throws a nade and it has 1 trail color, then later throws another with a different color?

The script should be easily expanded, but I haven't really done much in SP in quite some time.

satoon101 wrote:This plugin does the trail, and it should work for HL2DM, but not necessarily with the changing color feature:

viewtopic.php?f=7&t=1806

Do you mean the same trail mid arch changes color or just player 1 throws a nade and it has 1 trail color, then later throws another with a different color?

The script should be easily expanded, but I haven't really done much in SP in quite some time.

this way yes -- throws a nade and it has 1 trail color, then later throws another with a different color.

I remember making something like this for Painkiller a few months back. I believe this should work:

VinciT wrote:I remember making something like this for Painkiller a few months back. I believe this should work:

Syntax: Select all

# ../nade_trail/nade_trail.py

# Python
from colorsys import hsv_to_rgb
from random import choice

# Source.Python
from colors import Color
from engines.precache import Model
from entities.entity import Entity
from listeners import OnNetworkedEntitySpawned


pretty_colors = []
glow_replacement = Model('sprites/physcannon_blueglow.vmt')


def load():
    """Called when the plugin gets loaded."""
    pretty_colors.extend(get_pretty_colors(amount=10))


def change_trail_color(grenade, color_raw):
    """Changes the color of the 'npc_grenade_frag' glow and trail.

    Args:
        grenade (Entity): Entity instance of the 'npc_grenade_frag'.
        color_raw (int): Long (raw) color code.
    """
    glow = Entity.from_inthandle(grenade.main_glow)
    # The default sprite ('sprites/redglow1.vmt') is almost always going to
    # look red, so let's replace it.
    glow.model = glow_replacement
    trail = Entity.from_inthandle(grenade.glow_trail)
    # Change the colors of the 'glow' and the 'trail'.
    glow.set_network_property_int('m_clrRender', color_raw)
    trail.set_network_property_int('m_clrRender', color_raw)


@OnNetworkedEntitySpawned
def on_networked_entity_spawned(entity):
    """Called when a new networked entity has been spawned."""
    # Is this a grenade?
    if 'npc_grenade_frag' in entity.classname:
        # The grenade isn't fully initialized, delay the change for a frame.
        entity.delay(
            0, change_trail_color, (entity, choice(pretty_colors).raw))


class ColorEx(Color):
    """Extended Color class."""

    def __init__(self, r, g, b, a=255):
        """Initializes the object."""
        super().__init__(r, g, b, a)

        raw = r + (g << 8) + (b << 16) + (a << 24)
        self.raw = raw - 2**32 if raw >= 2**31 else raw


def get_pretty_colors(amount):
    """Returns a list of vibrant colors.

    Args:
        amount (int): How many colors should be generated?

    Returns:
        list of ColorEx: A list containing ColorEx instances.
    """
    colors = []
    step = 1 / amount

    for hue in range(0, amount):
        colors.append(
            ColorEx(*(int(255 * x) for x in hsv_to_rgb(step * hue, 1, 1))))

    return colors

OK, thank you very much . ill get on it tomarow bud, again thanks alot Great work.