Deltarune (Chapter 4) script viewer

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gml_Object_obj_anim_custom_Create_0

(view raw script w/o annotations or w/e)
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target_obj = -4;
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event_handler = -4;
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anim_active = false;
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anim_timestamps = [];
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anim_modifier = 30;
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anim_index = 0;
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anim_timer = 0;
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anim_events = [];
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init = function(arg0, arg1, arg2, arg3 = 30)
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{
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    target_obj = arg0;
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    target_obj.sprite_index = arg1;
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    target_obj.image_index = 0;
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    target_obj.image_speed = 0;
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    anim_timestamps = arg2;
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    anim_modifier = arg3;
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    anim_timer = anim_timestamps[anim_index] / anim_modifier;
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};
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start = function()
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{
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    anim_active = true;
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};
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stop = function()
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{
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    anim_active = false;
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    trigger_event("anim_end");
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};
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trigger_event = function(arg0, arg1 = -1)
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{
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    for (var i = 0; i < array_length(anim_events); i++)
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    {
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        var _event = anim_events[i][0];
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        var _callback = anim_events[i][1];
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        var _condition = anim_events[i][2];
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        var _args = anim_events[i][3];
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        if (_event == arg0)
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        {
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            if (_condition == arg1)
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            {
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                if (array_length(_args) == 0)
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                    _callback();
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                else if (array_length(_args) == 1)
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                    _callback(_args[0]);
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                else if (array_length(_args) == 2)
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                    _callback(_args[0], _args[1]);
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                else if (array_length(_args) == 3)
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                    _callback(_args[0], _args[1], _args[2]);
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            }
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        }
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    }
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};
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reset = function()
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{
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    target_obj = -4;
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    anim_active = false;
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    anim_timestamps = [];
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    anim_modifier = 30;
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    anim_index = 0;
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    anim_timer = 0;
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    anim_events = [];
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};
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is_playing = function()
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{
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    return anim_active;
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};
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anim_event = function(arg0, arg1, arg2, arg3)
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{
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    var event = [];
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    event[0] = arg0;
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    event[1] = arg1;
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    event[2] = arg2;
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    event[3] = arg3;
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    return event;
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};
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event_connect = function(arg0, arg1, arg2 = -1, arg3 = [])
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{
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    var _event = anim_event(arg0, arg1, arg2, arg3);
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    anim_events[array_length(anim_events)] = _event;
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};