Add Talker vehicle and EOCs for vehicles

[Ramza13]

Summary

Infrastructure "EOCs for vehicles"

Purpose of change

Implements #74511
Allow EOCs on vehicles

Describe the solution

Added talker vehicle and implemented some new talker functions for it. Right now the only way to access a vehicle with EOC's is to us the new "u_run_vehicle_eocs" eoc effect or when the "vehicle_moves" event fires. The only effect that works on vehicles is teleport.

Describe alternatives you've considered

So, so many. There are all kinds of powers I could hook up but I'm not sure what would actually get used and design choices would need to be made. Stuff like having vehicles run EOC's the way characters do, turning on/off power/engines. Please comment on this or create an issue and tag me if there is something you'd like to see added to this.

Testing

I used the following json

  {
    "type": "effect_on_condition",
    "id": "TEST_VEHICLE",
    "eoc_type": "EVENT",
    "required_event": "vehicle_moves",
    "condition":"u_is_vehicle",
    "effect": [ 
      { "math": [ "test_veh", "=", "u_val('pos_x')" ] },
      { "math": [ "test_veh_facing", "=", "u_val('vehicle_facing')" ] },
      { "math": [ "test_veh_speed", "=", "u_val('current_speed')" ] },
      { "math": [ "test_veh_unloaded_weight", "=", "u_val('unloaded_weight')" ] },
      { "math": [ "test_veh_friends", "=", "u_val('friendly_passenger_count')" ] },
      { "math": [ "test_veh_foes", "=", "u_val('hostile_passenger_count')" ] }
    ]
  },  
  {
    "type": "effect_on_condition",
    "id": "AAATEST_VEHICLE_Activate_Far",
    "effect": [ 
      {"u_run_vehicle_eocs":["TEST_NOT_VEHICLE"]}
    ]
  },
  {
    "type": "effect_on_condition",
    "id": "TEST_NOT_VEHICLE",
    "condition":"u_is_vehicle",
    "effect": [ 
      { "u_location_variable": { "global_val": "stuck_teleport" }, "min_radius": 0, "max_radius": 0, "x_adjust": -200 },
      { "u_teleport": { "global_val": "stuck_teleport" }, "success_message": "The car moves.", "fail_message": "The car does not move." } ]
  },
  {
    "type": "effect_on_condition",
    "id": "AAATEST_VEHICLE_Activate_Close",
    "effect": [ 
      {"u_run_vehicle_eocs":["TEST_NOT_VEHICLE_Close"]}
    ]
  },
  {
    "type": "effect_on_condition",
    "id": "TEST_NOT_VEHICLE_Close",
    "condition":"u_is_vehicle",
    "effect": [ 
      { "u_location_variable": { "global_val": "stuck_teleport" }, "min_radius": 0, "max_radius": 0, "x_adjust": -2 },
      { "u_teleport": { "global_val": "stuck_teleport" }, "success_message": "The car moves.", "fail_message": "The car does not move." } ]
  },
  {
    "type": "effect_on_condition",
    "id": "AAATEST_VEHICLE_Activate_Up",
    "effect": [ 
      {"u_run_vehicle_eocs":["TEST_NOT_VEHICLE_Up"]}
    ]
  },
  {
    "type": "effect_on_condition",
    "id": "TEST_NOT_VEHICLE_Up",
    "condition":"u_is_vehicle",
    "effect": [ 
      { "u_location_variable": { "global_val": "stuck_teleport" }, "min_radius": 0, "max_radius": 0, "z_adjust": 2 },
      { "u_teleport": { "global_val": "stuck_teleport" }, "success_message": "The car moves.", "fail_message": "The car does not move." } ]
  }

Additional context

[GuardianDll]

i guess it would conflict with #77485 much?

[andrei8l]

Quick review only. IMO this should wait for #77485 because that PR is already enormous.

[andrei8l]

Suggested change

	// first, let's find our position in current vehicles vector
	size_t our_i = 0;
	bool found = false;
	for( submap *&smap : here.grid ) {
	for( size_t i = 0; i < smap->vehicles.size(); i++ ) {
	if( smap->vehicles[i].get() == &veh ) {
	our_i = i;
	src_submap = smap;
	found = true;
	break;
	}
	}
	if( found ) {
	break;
	}
	}
	if( !found ) {
	add_msg_debug( debugmode::DF_MAP, "displace_vehicle [%s] failed", veh.name );
	return false;
	}
	src_submap = here.get_submap_at_grid( veh.sm_pos.xy() );

For master it's probably src_submap = here.get_submap_at_grid( point_rel_sm{ veh.sm_pos.xy() } ); though. It needs the change below too.

[andrei8l]

Suggested change

	auto src_submap_veh_it = src_submap->vehicles.begin() + our_i;
	auto src_submap_veh_it =
	std::find_if( src_submap->vehicles.begin(), src_submap->vehicles.end(),
	[&veh]( std::unique_ptr<vehicle> const & v ) {
	return v.get() == &veh;
	} );

[andrei8l]

Can you break this function down into logical units?

[andrei8l]

I think this needs more selection criteria to be useful. But for that we need an in-game use case.