[Calisthenics]

I fixed the link on the github wiki.

You create the dynamic checkpoints once, when you load the houses. Add a variable to store the checkpoint id in your `HouseData` array.

pawn Code:

// loading data of each house
HouseData[i][houseCP] = CreateDynamicCP(HouseData[i][houseX], HouseData[i][houseY], HouseData[i][houseZ], size_of_checkpoint, .streamdistance = 2.0);

When player will be streamed, it will show the checkpoint or disable if not. The callback when enter one is

pawn Code:

public OnPlayerEnterDynamicCP(playerid, checkpointid)

Streamer provides an extra id and can be used to skip loops if you set an offset.

pawn Code:

#define HOUSES_OFFSET 50000

pawn Code:

// loading data of each house
HouseData[i][houseCP] = CreateDynamicCP(HouseData[i][houseX], HouseData[i][houseY], HouseData[i][houseZ], size_of_checkpoint, .streamdistance = 2.0);
Streamer_SetIntData(STREAMER_TYPE_CP, HouseData[i][houseCP], E_STREAMER_EXTRA_ID, HOUSES_OFFSET + i);

When a player enters a dynamic checkpoint, you subtract the offset and expect it to be in a certain range. If none was set, it is by default 0 so the result would be a negative number.

pawn Code:

public OnPlayerEnterDynamicCP(playerid, checkpointid)
{
    new house_id = Streamer_GetIntData(STREAMER_TYPE_CP, HouseData[i][houseCP], E_STREAMER_EXTRA_ID) - HOUSES_OFFSET;

    if (house_id >= 0)
    {
        // player entered checkpoint at position:
        //HouseData[house_id][houseX], HouseData[house_id][houseY], HouseData[house_id][houseZ]
    }
    return 1;
}