GameMaker [Help] Create building

[Sawyer]

Hello everyone,

I try to make a building system.
I can put many differents building in my room. And i want than my units goes to build them.
For exemple if i put a wall on the map, and if an unit is near, it goes to build this wall. After less or more time it end to build it.

Actually if i put my wall my units goes to this wall, change his alpha instantanly and stay.


In my object player step event :

var can_build = 0;
with obj_in_contruction_parent
    {
    if hp_build = hp_max_build
        {can_build = 0}
        
    if hp_build < hp_max_build
        {can_build = 1}}
    
nearest = instance_nearest(x,y,obj_in_contruction_parent)

if (selected = false && distance_to_object (obj_in_contruction_parent) <= 600  && can_build = 1 )
{
if (mp_grid_path(global.grid,path,x,y,nearest.x-1,nearest.y,1))
{path_start(path,speed_unit,path_action_stop,false);
        
}}

In my obj_road :

Create event

hp_build = 0
hp_max_build = 100

Step event :

if (distance_to_object (obj_player) <= 10 )
{
hp_build +=1 //This is to have a counter to build
}
if hp_build = 100
{mp_grid_add_instances(global.grid, self, false);} //add my object to the grid

draw event :

image_alpha=0.5 + 1*hp_build
draw_self()

 

[IndianaBones]

What is the question/problem?

Is the player or building not working properly?

How should it be working?

 

[Sawyer]

What i want if i put my wall on the room :
- Low alpha (0.5) --->Ok
- My units, if they are near to this wall goes to build it ---> ok
- the building creation takes time ----> not ok, they build it instantanly
- when it end alpha 1, and my units have collision with my wall--->ok

The second problem is that my units stay near to my building. It seems they don't understand that my building in completed.

 

[IndianaBones]

In your draw event try this:

image_alpha = 0.5 + (0.5 * (hp_build /100));

 

[Sawyer]

Indeed it's better with your code.
But my units still doesn't detect when my building is completed.

Maybe it is possible to change my wall parent.
If hp_build = 100 --> change parent

 

[IndianaBones]

You are so close to having it work, don't need to change parent I think for now.

You need to make sure that once the building is complete, can_build == 0.

So you need to add a check so that if HP_build == 100, then the player stops adding HP to the building. Currently your code just keeps adding hp endlessly.

Once you do that, your code for setting can_build to zero will work, and then the player will end up looking for a different building.

 

[Sawyer]

With this code it should work, but no.

var can_build = 0;
with obj_in_contruction_parent
    {
    if (hp_build >= 100)
        {can_build = 0}
        
    if (hp_build < hp_max_build)
        {can_build = 1}}
    
nearest = instance_nearest(x,y,obj_in_contruction_parent)

if (selected = false && distance_to_object (obj_in_contruction_parent) <= 600  && can_build = 1 )
{

if (mp_grid_path(global.grid,path,x,y,nearest.x-1,nearest.y,1))//-10 to avoid to be stuck
{path_start(path,2,path_action_stop,false);
        
    }

}

 

[Sawyer]

I tried a different approach [ i use a draw text with string(can_build) to know my player state]

In my step event i wrote this :

can_build = 0;
nearest = instance_nearest(x,y,obj_in_contruction_parent)
if distance_to_object (nearest) <= 600{
with (nearest)
    {
    if (hp_build >= 100)
    with obj_player{
        {can_build = 0}}
 
    if (hp_build < hp_max_build)
        with obj_player{
        {can_build = 1}}}}
 

if (selected = false && distance_to_object (nearest) <= 600  && can_build = 1 )
{

if (mp_grid_path(global.grid,path,x,y,nearest.x,nearest.y,1))
{path_start(path,2,path_action_stop,false);
}}

With this code :

If i build my wall near to my player :
- He goes to build it (can_build = 1)
- When he end it can_build = 0

But now if i put an other wall in his building range can_build stay at 0.

However if i select my unit and if i put it near to this new wall, can_build = 1, and he do the job.
But i have to put it closer to the wall to build than the finished wall.
If i put it closer the finished wall than the wall to build, can_build stay at 0.

My problem is that it detect the hp_build of the nearest obj_in_contruction_parent only.

 

[IndianaBones]

The problem here is you are using "var" for the can_build variable.

This makes it a local variable to the script, even if it is inside the with() statement.

Just remove the "var can_build =0" line.

Make sure you have added can_build into the create event of the constuction object.

 

[IndianaBones]

You'll have to write some code that goes through all the instances and get the nearest one, but also checks it can be built.

Using instance_nearest() by itself is always going to return only the nearest building, regardless of it being built or not.

 

[Sawyer]

Indeed i just need to find the nearest instance with less than 100 hp_build.
I am searching how to do it.

 

[IndianaBones]

https://forum.yoyogames.com/index.php?threads/with-block-recipe-cards.25326/

Check this post, find the section, Find instance with lowest value. It may help.

 

[Linkdeous]

Maybe make a raoming state in your worker object, so they get around then after they are attrcted to a building, they are going to construct it (just make a variable like progress in your wall obj that is like 10000) so when the worker start constructing, they add 1 to a empty variable, and when it's done (after adding a lot of 1 so it get to 10000) the construct is finished, and the Romaing state kick in and they wander around after that

 

[Sawyer]

What is a raoming state?
I think that my variable which progress is hp_build.

 

[Sawyer]

With this code my units go near the obj_in_contruction_parent with the less hp_build.
It also and i don't know why change my mouse sensibility (my fps don't move).

var val, lowest, lowest_val;
lowest = noone;// No instance at all.
lowest_val = 0;
with (obj_in_contruction_parent) {
  val = hp_build;
  if (lowest == noone || val < lowest_val) {//or
    lowest = id;
    lowest_val = val;
  }
}
if (lowest != noone) {


if (mp_grid_path(global.grid,path,x,y,lowest.x,lowest.y,1))
{path_start(path,2,path_action_stop,false);
}
}

 

[Linkdeous]

Why is there my quote in the middle xd ?
anyway the romaing state would be another vairable, that make the worker do roam around

if roaming=1{ //code so he walk around so he will move around after finishing building a building}