//(c) Macluawn

forward OnPlayerEnterCheckPointEx(playerid, checkpoint);
forward mcpCheck();

enum mcpParamsEx
{
	bool:mcpCreated,
	Float:mcpX,
	Float:mcpY,
	Float:mcpZ,
};

new mcpParams[30][mcpParamsEx],
	mcpId = -1,
	mcpUsed,
	bool:mcpShown[MAX_PLAYERS][30],
	bool:mcpEntered[MAX_PLAYERS][30];

stock CreateCheckpoint(Float:x, Float:y, Float:z)
{
	mcpId = -1;
	for (new mcpi = 0; mcpi < 30; mcpi++)
	{
		if(mcpParams[mcpi][mcpX] == 0)
		{
			mcpId = mcpi;
			break;
		}
	}
	if(mcpId == -1) return -1;
	mcpParams[mcpId][mcpCreated] = true;
	mcpParams[mcpId][mcpX] = x;
	mcpParams[mcpId][mcpY] = y;
	mcpParams[mcpId][mcpZ] = z;
	if(mcpUsed == 0)
	{
		SetTimer("mcpCheck",150,true);
		mcpUsed = 1;
	}
	return mcpId;
}

stock ShowPlayerCheckpoint(playerid, mcpid, bool:visable = true)
{
	if(0 > mcpid > 29) return 0;
	if(mcpParams[mcpId][mcpCreated] == false) return 0;
	if(visable == true) SetPlayerMapIcon(playerid, mcpid, mcpParams[mcpid][mcpX], mcpParams[mcpid][mcpY], mcpParams[mcpid][mcpZ], 0, 0xff0000AA, MAPICON_GLOBAL_CHECKPOINT);
	else SetPlayerMapIcon(playerid, mcpid, mcpParams[mcpid][mcpX], mcpParams[mcpid][mcpY], mcpParams[mcpid][mcpZ], 0, 0xff000000, MAPICON_GLOBAL_CHECKPOINT);
	mcpShown[playerid][mcpid] = true;
	return 1;
}

stock HidePlayerCheckpoint(playerid, mcpid)
{
	if(0 > mcpid > 29) return 0;
	if(mcpShown[playerid][mcpid] == false) return 0;
	if(mcpParams[mcpId][mcpCreated] == 0) return 0;
	RemovePlayerMapIcon(playerid, mcpid);
	mcpShown[playerid][mcpid] = false;
	return 1;
}

stock RemoveCheckpoint(mcpid)
{
	if(0 > mcpid > 29) return 0;
	if(mcpParams[mcpid][mcpCreated] == 0) return 0;
	for (new mcpSlots = GetMaxPlayers(), mcpi; mcpi < mcpSlots; mcpi++)
	{
		if(!IsPlayerConnected(mcpi)) continue;
		mcpShown[mcpi][mcpid] = false;
		RemovePlayerMapIcon(mcpi, mcpid);
	}
	mcpParams[mcpid][mcpCreated] = 0;
	return 1;
}

stock IsCreated(mcpid)
{
	if(0 > mcpid > 29) return 0;
	if(mcpParams[mcpy][mcpCreated] == true) return 1;
	return 0;
}

public mcpCheck() //mcpi = Players	|| mcpy = checkpoints
{
	for (new mcpSlots = GetMaxPlayers(), mcpi; mcpi < mcpSlots; mcpi++)
	{
		if(!IsPlayerConnected(mcpi)) continue;
		for (new mcpy = 0; mcpy < 30; mcpy++)
		{
			if(mcpShown[mcpi][mcpy] == false) continue;
			if(mcpParams[mcpy][mcpCreated] == false) continue;
			if(IsPlayerInRangeOfPoint(mcpi, 1.0, mcpParams[mcpy][mcpX], mcpParams[mcpy][mcpY], mcpParams[mcpy][mcpZ]) && mcpEntered[mcpi][mcpy] == false) 
			{
				mcpEntered[mcpi][mcpy] = true;
				CallLocalFunction("OnPlayerEnterCheckPointEx", "ii", mcpi, mcpy);
				continue;
			}
			else if(!IsPlayerInRangeOfPoint(mcpi, 1.0, mcpParams[mcpy][mcpX], mcpParams[mcpy][mcpY], mcpParams[mcpy][mcpZ]) && mcpEntered[mcpi][mcpy] == true) mcpEntered[mcpi][mcpy] = false; 		
		}
	}
}