Description
(spike strip, traffic spikes, tire shredders, one-way traffic treadles, stingers, stop sticks, tire deflation device)
This is the most accurate spike strip script ever made. It uses line segment intersection detection algorithm. A line segment is a line that has a start point and an end point, and each wheel, when a player is driving, creates a line segment. That way it's possible to detect if a vehicle (more precisely a wheel) drives over a spike strip as each spike strip has line segment(s) of its own. The script will happily pop the tires of a vehicle that drives over a spike strip even if the vehicle is driving at 500 km/h.


Functions

SpikeStrip_Create	Parameters: modelid - The modelid of the spike strip. Float:x - The X coordinate to create the spike strip at. Float:y - The Y coordinate to create the spike strip at. Float:z - The Z coordinate to create the spike strip at. Float:a - The angle of the spike strip. Returns The ID of the spike strip.
SpikeStrip_Delete	Parameters: spikeid - The ID of the spike strip you want to delete. Returns This function doesn't return a specific value.
SpikeStrip_DeleteAll	Parameters: This function has no parameters Returns This function doesn't return a specific value.
SpikeStrip_IsValid	Parameters: spikeid - The ID of the spike strip you want to check the validity of. Returns 1 if the spike strip exists, otherwise 0.
SpikeStrip_SetGhost	Parameters: playerid - The ID of the player whose ghost mode you want to set. bool:toggle - 1 to enable the player's ghost mode, 0 to disable. Returns This function doesn't return a specific value.
SpikeStrip_IsGhost	Parameters: playerid - The ID of the player whose ghost mode you want to check. Returns 1 if the player is in ghost mode, otherwise 0.

Callbacks

OnSpikeStripPopTire

Description: Called when a vehicle's tire is popped by a spike strip. Parameters: spikeid - The ID of the spike strip that popped the tire. vehicleid - The ID of the vehicle whose tire was popped. playerid - The ID of the player who is driving the vehicle. tire - The tire that was popped. Returns This callback does not handle returns.

Configuration

pawn Код:

#define MAX_SPIKE_STRIPS        (128)

The maximum amount of spike strips.

pawn Код:

#define SS_TIME_INTERVAL        (250)

Time interval between checks.

pawn Код:

#define SS_LINE_SEGMENTS        (2)

The amount of line segments a spike strip should have. This value can be set to 1, 2 or 4. The more line segments, the higher accuracy, but also the more computing time is required. Choose the one that best fits your needs.

Spike strip with 1 segment:


Spike strip with 2 segments:


Spike strip with 4 segments:



Testing

Test filterscript:

pawn Код:

// Test filterscript
#define FILTERSCRIPT

#include <a_samp>
#include <sscanf2>
#include <spikestrip>
#include <zcmd>
#tryinclude <mapandreas>

public OnFilterScriptInit()
{
    // Uncomment if you're using MapAndreas plugin
    // MapAndreas_Init(2);
    return 1;
}

CMD:sadd(playerid, params[])
{
    if (IsPlayerAdmin(playerid))
    {
        if (!strlen(params[0]))
        {
            return SendClientMessage(playerid, 0xC0C0C0FF, "Usage: /sadd <modelid> [0 = SHORT, 1 = LONG]");
        }
        new
            model,
            index,
            Float:px,
            Float:py,
            Float:pz,
            Float:pa;
        model = strval(params);
        GetPlayerPos(playerid, px, py, pz);
        if (!IsPlayerInAnyVehicle(playerid))
        {
            GetPlayerFacingAngle(playerid, pa);
        }
        else
        {
            GetVehicleZAngle(GetPlayerVehicleID(playerid), pa);
        }
        #if defined _inc_mapandreas
        
        pz = GetPointZPos(px, py);

        #endif
        model != 0 && (model = SPIKE_STRIP_LONG) || (model = SPIKE_STRIP_SHORT);
        if ((index = SpikeStrip_Create(model, px, py, pz, pa)) != INVALID_OBJECT_ID)
        {
            new
                str[32];
            format(str, 32, "Spike Strip ID %d created.", index);
            SendClientMessage(playerid, 0xC0C0C0FF, str);
        }
        else
        {
            SendClientMessage(playerid, 0xC0C0C0FF, "ERROR: Spike strip could not be created.");
        }
        return 1;
    }
    return 0;
}

CMD:sdel(playerid, params[])
{
    if (IsPlayerAdmin(playerid))
    {
        if (!strlen(params[0]))
        {
            return SendClientMessage(playerid, 0xC0C0C0FF, "Usage: /sdel <spikeid>");
        }
        new
            index;
        index = strval(params);
        if (SpikeStrip_IsValid(index))
        {
            new
                str[32];
            format(str, 32, "Spike Strip ID %d deleted.", index);
            SendClientMessage(playerid, 0xC0C0C0FF, str);

            SpikeStrip_Delete(index);
        }
        else
        {
            SendClientMessage(playerid, 0xC0C0C0FF, "ERROR: Invalid spike strip ID.");
        }
        return 1;
    }
    return 0;
}

CMD:sghost(playerid, params[])
{
    if (IsPlayerAdmin(playerid))
    {
        new
            player,
            status;
        if(sscanf(params, "ui", player, status))
        {
            return SendClientMessage(playerid, 0xC0C0C0FF, "Usage: /sghost <playerid> <ghost>");
        }
        if (player != INVALID_PLAYER_ID)
        {
            new
                str[64];
            format(str, 64, "Player ID %d ghost mode set to %d.", player, !!status);
            SendClientMessage(playerid, 0xC0C0C0FF, str);

            SpikeStrip_SetGhost(player, !!status);
        }
        return 1;
    }
    return 0;
}

Notes

• No support for unoccupied vehicles.
• No support for trailers attached to vehicles.
• No support for middle wheels in six wheel vehicles.
• Some vehicles are not affected by spike strips (e.g. Dune and Quad).

Download (UPDATE 2)

spikestrip (filterscript)
spikestrip.inc (include)

Filterscript will no longer be updated. Download the latest include version:
https://sampforum.blast.hk/showthread.php?pid=2656907#pid2656907

Other requirements

Requires y_iterate/foreach


Thanks

****** - y_iterate/foreach
Kalcor & SA-MP Team - SA-MP
MP2 - Valuable suggestions

Quote:

Originally Posted by MP2 Why would you want to unload it?

Quote:

Originally Posted by MP2 Anyway, I've tested it and it doesn't work. I added a print to print the value of 'distance' and it never goes below 0.24 - not even close. (Print was JUST before 'if (distance < 0.24)'). I've transferred the entire thing in to an inc, but I guarantee you I haven't 'broken' anything. It doesn't seem to go below 0.6. EDIT: Fixed by changing to this: if (distance < 1)

g_Spike_zA[idx] = z - 0.9;
// to
g_Spike_zA[idx] = z - ((FindZ) ? 0.9 : 0.0);