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## About The Pull Request Мерге
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Original file line number | Diff line number | Diff line change |
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/// "Tugs" an atom towards another atom. That is to say, it will visually | ||
/// pixel offset to look like it is close to the point it's tugging to, | ||
/// but not actually move position. | ||
/datum/component/tug_towards | ||
// If multiple are specified, will tug in between them. | ||
dupe_mode = COMPONENT_DUPE_UNIQUE_PASSARGS | ||
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VAR_PRIVATE | ||
/// atom -> strength | ||
list/list/tugging_to_targets = list() | ||
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current_tug_offset_x = 0 | ||
current_tug_offset_y = 0 | ||
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/datum/component/tug_towards/Initialize( | ||
/// The atom we are tugging towards. | ||
atom/tugging_to, | ||
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/// Strength of the tug, as a number 0 through 1. | ||
/// 0 means no tug, 1 means that if you're on an adjacent tile | ||
/// you will be directly at the corner of the tugging_to_target. | ||
/// Default is 0.8, which provides a healthy amount of | ||
/// distance. | ||
strength | ||
) | ||
if (!isatom(parent)) | ||
return COMPONENT_INCOMPATIBLE | ||
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ASSERT(istype(tugging_to)) | ||
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add_tugging_to_target(tugging_to, strength) | ||
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RegisterSignals(parent, list( | ||
COMSIG_MOVABLE_MOVED, | ||
COMSIG_MOB_BUCKLED, | ||
COMSIG_MOB_UNBUCKLED, | ||
), PROC_REF(update_tug)) | ||
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||
/datum/component/tug_towards/Destroy(force) | ||
tugging_to_targets.Cut() | ||
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animate( | ||
parent, | ||
pixel_x = -current_tug_offset_x, | ||
pixel_y = -current_tug_offset_y, | ||
time = 0.2 SECONDS, | ||
flags = ANIMATION_RELATIVE | ||
) | ||
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||
return ..() | ||
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/datum/component/tug_towards/InheritComponent( | ||
datum/component/tug_towards/new_tug_towards, | ||
i_am_original, | ||
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atom/tugging_to, | ||
strength, | ||
) | ||
add_tugging_to_target(tugging_to, strength) | ||
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/datum/component/tug_towards/proc/remove_tug_target(atom/target) | ||
tugging_to_targets -= target | ||
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if (tugging_to_targets.len == 0) | ||
qdel(src) | ||
else | ||
update_tug() | ||
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/datum/component/tug_towards/proc/add_tugging_to_target( | ||
atom/tugging_to, | ||
strength = 0.8, | ||
) | ||
PRIVATE_PROC(TRUE) | ||
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tugging_to_targets[tugging_to] = strength | ||
RegisterSignal(tugging_to, COMSIG_PREQDELETED, PROC_REF(on_tugging_to_qdeleting)) | ||
RegisterSignal(tugging_to, COMSIG_MOVABLE_MOVED, PROC_REF(update_tug)) | ||
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update_tug() | ||
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/datum/component/tug_towards/proc/on_tugging_to_qdeleting(datum/target) | ||
SIGNAL_HANDLER | ||
PRIVATE_PROC(TRUE) | ||
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tugging_to_targets -= target | ||
if (tugging_to_targets.len == 0) | ||
qdel(src) | ||
else | ||
update_tug() | ||
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/datum/component/tug_towards/proc/update_tug() | ||
SIGNAL_HANDLER | ||
PRIVATE_PROC(TRUE) | ||
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var/atom/atom_parent = parent | ||
var/mob/mob_parent = parent | ||
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var/total_tug_x = 0 | ||
var/total_tug_y = 0 | ||
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if (!istype(mob_parent) || !mob_parent.buckled) | ||
var/tuggers = 0 | ||
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for (var/atom/target as anything in tugging_to_targets) | ||
if (target.z != atom_parent.z) | ||
continue | ||
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tuggers += 1 | ||
var/strength = tugging_to_targets[target] | ||
total_tug_x += SIGN(target.x - atom_parent.x) * strength | ||
total_tug_y += SIGN(target.y - atom_parent.y) * strength | ||
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// Intentionally not trig--something at a corner with a strength of 1 should have | ||
// you at the corner, rather than root(2). | ||
total_tug_x /= tuggers | ||
total_tug_y /= tuggers | ||
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var/half_size = world.icon_size * 0.5 | ||
total_tug_x *= half_size | ||
total_tug_y *= half_size | ||
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if (total_tug_x == current_tug_offset_x && total_tug_y == current_tug_offset_y) | ||
return | ||
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animate( | ||
atom_parent, | ||
pixel_x = -current_tug_offset_x + total_tug_x, | ||
pixel_y = -current_tug_offset_y + total_tug_y, | ||
time = 0.2 SECONDS, | ||
flags = ANIMATION_RELATIVE | ||
) | ||
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current_tug_offset_x = total_tug_x | ||
current_tug_offset_y = total_tug_y |
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