I'm in the process of adding multiplayer to this top down tank game I'm working on and I'm stuck at adding the turret object. I've got the x, y and image_angle of the base to send to the server and then to all clients and that works perfectly. I'm a newbie when it comes to 39dll but I do unterstand the basis. I'm using sabriath's tutorial as a base. I want to know how I would assign a turret object to the specific client's base object.
Here is the client:
obj_dll's CREATE event:
dllinit(0, true, false);
server = tcpconnect("127.0.0.1", 12000, 2);
if (server < 0) game_end();
//These set the old x, y and image angle coordinates
dx = -1;
dy = -1;
angle = -1;
dspid = ds_map_create();obj_dll's DESTROY event:
if (server >= 0)
{
clearbuffer();
writeint(9);
sendmessage(server);
}obj_dll's STEP event:
if !instance_exists(obj_player) exit;
//These set the new x, y, and angle coordinates
sx = obj_player.x; //the base x coordinate
sy = obj_player.y; //the base y coordinate
sangle = obj_player.image_angle; //the base image angle
if (server >= 0) && ((dx != sx) || (dy != sy) || angle != sangle) //This makes sure the coordinates are only sent if they change
{
dx = sx;
dy = sy;
angle = sangle;
clearbuffer();
writeint(1); //case 1 of BEGIN STEP event
writeint(dx);
writeint(dy);
writefloat(angle);
sendmessage(server);
}obj_dll's BEGIN STEP event:
if (server >= 0)
{
size = receivemessage(server);
if (size == 0) game_end();
if (size > 0)
{
code = readint();
switch (code)
{
case 1:
ic = readint();
for (i = 0; i < ic; i += 1)
{
iod = scr_translate_client(readint()); //the following script is used here
tx = readint();
ty = readint();
angle = readfloat();
if (iod != -1)
{
(iod).x = tx;
(iod).y = ty;
(iod).image_angle = angle; //I get stuck adding the turret angle here
}
}
break;
case 4:
ic = readint();
if ds_map_exists(dspid, ic)
{
with ds_map_find_value(dspid, ic) instance_destroy();
ds_map_delete(dspid, ic);
}
ds_map_add(dspid, ic, -1);
break;
case 9:
ic = readint();
with scr_translate_client(ic) instance_destroy();
ds_map_delete(dspid, ic);
break;
case 11:
server = -1;
instance_destroy();
game_end();
break;
}
}
}This script is used in the CLIENT's obj_dll BEGIN STEP event:
This is the scr_translate_client script:
//scr_translate_client(id)
// looks for id in our list
// if it finds it, it returns the true id
// if none found, it creates a new obj_others and adds it to the list
if ds_map_exists(dspid, argument0)
return ds_map_find_value(dspid, argument0);
io = instance_create(0, 0, obj_others);
ds_map_add(dspid, argument0, io);
return io;obj_player has general create and movement code and obj_others is all blank.
Here is the Server:
obj_dll CREATE event:
dllinit(0, true, false); listen = tcplisten(12000, 4, 1); //listen at port 12000, max players = 4 if (listen < 0) game_end();
obj_dll STEP event
client = tcpaccept(listen, 1);
if (client >= 0)
{
o = instance_create(0, 0, obj_client); //would I add the turrent's instance_create event here?
o.client = client;
}
if (client >= 0)
{
clearbuffer();
writeint(4);
writeint(o);
sendmessage(client);
}obj_dll END STEP event:
ic = instance_number(obj_client);
if (ic == 0) exit;
clearbuffer();
writeint(1);
writeint(ic);
for (i = 0; i < ic; i += 1)
{
oi = instance_find(obj_client, i);
writeint(oi.id);
writeint(oi.x);
writeint(oi.y);
writefloat(oi.image_angle);
}
for (i = 0; i < ic; i += 1)
{
oi = instance_find(obj_client, i);
sendmessage(oi.client);
}obj_client:
obj_client CREATE event:
client = -1;
obj_client DESTROY event:
if (client != -1)
{
clearbuffer();
writeint(9);
writeint(self.id);
ic = instance_number(obj_client);
for (i = 0; i < ic; i += 1)
{
oi = instance_find(obj_client, i);
if (oi != self.id)
sendmessage(oi.client);
}
closesocket(client);
}obj_client STEP event:
if (client != -1)
{
clearbuffer();
size = receivemessage(client);
if (size == 0) instance_destroy();
if (size > 0)
{
code = readint();
switch (code)
{
case 1:
x = readint();
y = readint();
image_angle = readfloat();
break;
}
}
}obj_client RIGHT BUTTON event:
if (client != -1)
{
clearbuffer();
writeint(11);
sendmessage(client);
instance_destroy();
}So where about would I add the turret stuff? I've got to the part of adding the turrets coordinates and turret angle to obj_dll's STEP event but then I get stuck at obj_dll's END STEP event at case 1 after if (iod != -1). As far as I know "iod" is set to the base object so I can't add another "(iod).image_angle = angle" for the turret.
Has anyone made a top down tank game and done something like this? Any suggestions?
I've added the entire client and server programs above. I don't mind sharing it as the only thing different between it and sabriath's tutorial is the addition of image_angle sending and receiving.
Thanks.
Edited by Slasher_X, 11 August 2012 - 12:21 PM.
