Working compass in battle map

[shokkueibu]

I want to use the compass in the battle map.
So far I've managed to use the mesh from the one in world map and make it rotate as I do. Obviously, I want it to work like a real compass except I don't have the necessary mathematical knowledge to do so. (arctangent?  )
I take it [font=Consolas,Fixedsys]overlay_set_mesh_rotation[/font] is a good start, along with [font=Consolas,Fixedsys]agent_get_look_position[/font]?

How can I make it point towards a single point?
Can I define where in the scene that point is?


Working code:

("multiplayer_compass", prsntf_read_only|prsntf_manual_end_only, 0, [
    (ti_on_presentation_load, [
      (set_fixed_point_multiplier, 1000),
      (create_mesh_overlay, "$bi_compass", "mesh_compass"),
      (position_set_x, pos1, 50),
      (position_set_y, pos1, 550),
      (overlay_set_position, "$bi_compass", pos1),
      (position_set_x, pos1, 500),
      (position_set_y, pos1, 500),
      (overlay_set_size, "$bi_compass", pos1),
      
      (store_current_scene, ":cur_scene"),      
      (try_begin),
        (is_between, ":cur_scene", multiplayer_scenes_begin, multiplayer_scenes_end),
        (try_begin),
          (this_or_next|eq, ":cur_scene", scn_multi_scene_1), #Ruins
          (eq, ":cur_scene", scn_multi_scene_14), #Battle on Ice
          (assign, "$bi_compass_north", 135),
          
        (else_try),
          (eq, ":cur_scene", scn_multi_scene_2), #Village
          (assign, "$bi_compass_north", 180),
        (else_try),
          (this_or_next|eq, ":cur_scene", scn_multi_scene_4),   #Ruined Fort
          (this_or_next|eq, ":cur_scene", scn_multi_scene_12),  #Port Assault
          (eq, ":cur_scene", scn_multi_scene_18),               #Forest Hideout
          (assign, "$bi_compass_north", 0),
        (else_try),
          (eq, ":cur_scene", scn_multi_scene_7),    #Field by the River
          (assign, "$bi_compass_north", 225),
        (else_try),
          (eq, ":cur_scene", scn_multi_scene_9),    #Snowy Village
          (assign, "$bi_compass_north", 45),
        (else_try),
          (eq, ":cur_scene", scn_multi_scene_11),   #Nord Town
          (assign, "$bi_compass_north", 315),
        (else_try),
          (eq, ":cur_scene", scn_multi_scene_17),   #The Arena
          (assign, "$bi_compass_north", 20),          #The map isn't aligned to its borders 
        (try_end),
      (else_try),
        (entry_point_get_position, pos1, multi_initial_spawn_point_team_1),
        (entry_point_get_position, pos2, multi_initial_spawn_point_team_2),
        (get_angle_between_positions, "$bi_compass_north", pos2, pos1),
      (try_end),
      
      (assign, "$bi_compass_active", 1), #TODO: Let the user toggle this from
      (assign, "$bi_compass_3d", 1),      #              a menu or with a key
      (presentation_set_duration, 999999),
      ]),
    (ti_on_presentation_run, [
      (try_begin),
        (eq, "$bi_compass_active", 1),
        (set_fixed_point_multiplier, 1),
       
        (init_position, pos3),
        (position_rotate_z, pos3, "$bi_compass_north"),
        
        (mission_cam_get_position, pos1),
        (position_get_rotation_around_z, ":view_angle", pos1),
        
        (init_position, pos2),
        (val_mul, ":view_angle", -1), #Invert the angle
        (position_rotate_z, pos2, ":view_angle"),
        
        #Here we get the angle between the player and north
        (set_fixed_point_multiplier, 1),
        (get_angle_between_positions, ":angle", pos3, pos2),

        (init_position, pos10),
        (try_begin), #by dunde
           (eq, "$bi_compass_3d", 1),
           (position_get_rotation_around_x, ":pitch", pos1),
           (store_sub, ":pitch", -90, ":pitch"),
           (try_begin),
              (gt, ":pitch", 360),
              (val_mod, ":pitch", 360),
           (else_try),
              (lt, ":pitch", -360),
              (val_abs, ":pitch"),
              (val_mod, ":pitch", 360),
              (val_mul, ":pitch", -1),
           (try_end),
           (try_begin),
              (is_between, ":pitch", 180, 361),
              (val_sub, ":pitch", 360),
           (try_end),   
          (val_clamp, ":pitch", -90, 1),     
          (position_rotate_x, pos10, ":pitch"),         
        (try_end),
        
        (position_rotate_z, pos10, ":angle"),
        (overlay_set_mesh_rotation, "$bi_compass", pos10),
      (else_try),
        (presentation_set_duration, 0),
      (try_end),
      ]),
    ]),

  ("compass", 0, "compass", 0, 0, 0, 0, 0, 0, 1, 1, 1),

multiplayer_compass = (
  ti_battle_window_opened, 0, 0, [], [
    (start_presentation, "prsnt_multiplayer_compass"),
    ])   

Still in [font=consolas,fixedsys]module_mission_templates.py[/font], add
[font=consolas,fixedsys]multiplayer_compass,[/font]
by the end of any gametype you wish (multiplayer_bt, multiplayer_dm, etc).


Many thanks to Caba`drin, dunde and Somebody!

EDIT: Turns out I was wrong. The angle calculations aren't really working, it was a coincidence it pointed at the right place in Ruins. Yeah I know, bad testing from my part :/
As a workaround I set North manually for each stock map, excluding Siege  and random maps. If someone knows how to fix it please do say so.

 

[Caba`drin]

I don't think you'll be needing any fancy trigonometric operations, actually.

Something else that will come in handy is
get_angle_between_positions

Pick a point in the scene that you want it to point to X, Y. Initialize a new position and then use position_set_x and position_set_y to make that position contain the point you want. So if that was pos45, and you used agent_get_look_position and stored it to pos1..

(set_fixed_point_multiplier, 1),
(get_angle_between_positions, ":theta", pos45, pos1),
(overlay_set_mesh_rotation, "verlay", ":theta"),

would be what I would start toying around with.

 

[dunde]

camera position will be better choice than agent_look_position, in case player use custom camera.

 

[shokkueibu]

(overlay_set_mesh_rotation, "verlay", ":theta"),

I don't think this works because it needs a position, not an angle.

(overlay_set_mesh_rotation, <overlay_id>, <position_no>), #position's rotation values are used for rotations around x, y and z axis

Even with that in mind it doesn't work. The compass mimics my movement instead of always pointing towards the coordinates I set.

      (set_fixed_point_multiplier, 1000),
      (create_mesh_overlay, "$g_multiplayer_compass", "mesh_compass"),
      (position_set_x, pos1, 50),
      (position_set_y, pos1, 550),
      (overlay_set_position, "$g_multiplayer_compass", pos1),
      (position_set_x, pos1, 500),
      (position_set_y, pos1, 500),
      (overlay_set_size, "$g_multiplayer_compass", pos1),
      
      (multiplayer_get_my_player, ":player"),
      (player_get_agent_id, ":player_agent", ":player"),
      (try_begin),
        (agent_is_active,":player_agent"),
        (agent_is_alive,":player_agent"),
        
        (init_position, pos10),
        (position_set_x, pos10, 100),  #random coordinates
        (position_set_y, pos10, 100),
        
        (agent_get_look_position, pos1, ":player_agent"),
        
        (set_fixed_point_multiplier, 1),
        (get_angle_between_positions, ":angle", pos10, pos1),
        
        (init_position, pos1),
        (position_rotate_z, pos1, ":angle"),
        
        (overlay_set_display, "$g_multiplayer_compass", 1),
        (overlay_set_mesh_rotation, "$g_multiplayer_compass", pos1),
      (else_try),
        (overlay_set_display, "$g_multiplayer_compass", 0),
      (try_end),

This is what happens in-game

camera position will be better choice than agent_look_position, in case player use custom camera.

Thanks for the tip, might come in handy when it works.

 

[Somebody]

You might want to get the position of an in-game object instead of arbitrarily defining a point.
Also, how is the presentation run in the mission template?

 

[Caba`drin]

What if you got the player's position, rather than their look position. Then take the player's rotation around Z and subtract the angle between the player's position and the target position and set that as the rotation for the overlay?

I can't tell if I'm thinking this through well or not...

 

[shokkueibu]

You might want to get the position of an in-game object instead of arbitrarily defining a point. Also, what did you set the point multiplier to before setting pos10?

I can try with the spawn point of Team 1. Any way to obtain it?

Also, how is the presentation run in the mission template?

multiplayer_compass = (
  ti_battle_window_opened, 0, 0, [], [
    (start_presentation, "prsnt_multiplayer_compass"),
    ]) 

Which is then used at the end of the Deathmatch mission template, right after [font=consolas,fixedsys]multiplayer_once_at_the_first_frame[/font]

What if you got the player's position, rather than their look position. Then take the player's rotation around Z and subtract the angle between the player's position and the target position and set that as the rotation for the overlay?

I can't tell if I'm thinking this through well or not...

I'm going to try that.

 

[dunde]

why dont use position_get_rotation_around_z to agent look position,invert the angle and use it as the direction of compass?

 

[shokkueibu]

That not only makes sense but it works perfectly. At least as far as a quick test can reveal:


Don't mind my buddies on TS, they're trying out Barfight

 

[Caba`drin]

LoL. Fantastically simple.
Nice.

 

[shokkueibu]

Working better than ever:

 

[dunde]

And this is the SP version :

# Compass
("compass", prsntf_read_only|prsntf_manual_end_only, 0, [
    (ti_on_presentation_load, [
      (set_fixed_point_multiplier, 1000),
      (create_mesh_overlay, "$compass", "mesh_compass"),
      (position_set_x, pos1, 50),
      (position_set_y, pos1, 50),
      (overlay_set_position, "$compass", pos1),
      (position_set_x, pos1, 500),
      (position_set_y, pos1, 500),
      (overlay_set_size, "$compass", pos1),      
      (presentation_set_duration, 999999),
      ]),
    (ti_on_presentation_run, 
    [(try_begin),
        (eq, "$compass_active", 1),
        (set_fixed_point_multiplier, 1),
        (mission_cam_get_position, pos1),                  #Or camera view; pick whichever you prefer 
        (init_position, pos2),        
        (try_begin),
           (eq, "$compass_3d", 1),
           (position_get_rotation_around_x, ":angle", pos1),
           (store_sub, ":angle", -90, ":angle"),
           (try_begin),
              (gt, ":angle", 360),
              (val_mod, ":angle", 360),
           (else_try),
              (lt, ":angle", -360),
              (val_abs, ":angle"),
              (val_mod, ":angle", 360),
              (val_mul, ":angle", -1),
           (try_end),
           (try_begin),
              (is_between, ":angle", 180, 361),
              (val_sub, ":angle", 360),
           (try_end),   
          (val_clamp, ":angle", -90, 1),     
          (position_rotate_x, pos2, ":angle"),         
        (try_end),
        (position_get_rotation_around_z, ":angle", pos1),
        (val_mul, ":angle", -1),     
        (position_rotate_z, pos2, ":angle"),                 
        (overlay_set_mesh_rotation, "$compass", pos2),
     (else_try),
        (presentation_set_duration, 0),     
     (try_end), ]),
    ]),

# 2D/3D Compass begin
compass_init = (ti_before_mission_start, 0, 0, [], [(assign,  "$compass_active", 0),])
compass_run  = (0, 0, 0, [(key_clicked, 0x2e),],   # key_c 
[(try_begin),
   (eq, "$compass_active", 0),
   (assign,  "$compass_active", 1),   
   (start_presentation, "prsnt_compass"),
 (else_try),
   (assign,  "$compass_active", 0),
 (try_end),  ])

compas_3d    = (0, 0, 0, [(key_clicked, 0x2f),],  # key_v
[(try_begin),
   (eq, "$compass_3d", 0),
   (assign, "$compass_3d", 1),   
   (start_presentation, "prsnt_compass"),
 (else_try),
   (assign, "$compass_3d", 0), 
 (try_end),  ])  
# 2D/3D Compass end

   compass_init, compass_run, compass_3d,

Press C : Toggle Compass On/Off
Press V : Toggle Compass 3D/2D

 

[shokkueibu]

Nice! Can I use it on my mod?

 

[dunde]

Of course, you can.