particle_data = [];
particle_system_lifetime = -1;
auto_cleanup = false;
blend_mode = 0;
shader = 0;
u1_forceColor = shader_get_uniform(shd_forcecolour, "forceColour");
u2_grayscalefade = shader_get_uniform(shd_grayscale_fade, "fade");
shader2_greyscale_fade = 0;
skip_fusuma = false;
frames_between_emissions = 0;
particles_per_emission = 1;
emission_timer = 0;
default_particle_data = 
{
    sprite_index: spr_pxwhite,
    hspeed: 0,
    vspeed: 0,
    gravity: 0,
    friction: 0,
    image_xscale: 2,
    image_yscale: 2,
    lifetime: 30,
    image_index: 0,
    image_angle: 0,
    image_speed: 0,
    image_blend: c_white,
    image_alpha: 1,
    fadeout_speed: 0,
    animation_mode: false,
    custom_data: 0
};
struct_variables = variable_struct_get_names(default_particle_data);
variable_array_length = array_length(struct_variables);

particle_step_func = function(arg0)
{
};

struct_init_map = ds_map_create();

emit = function(arg0 = undefined, arg1 = false)
{
    if (arg0 == undefined)
    {
        arg0 = default_particle_data;
    }
    else if (!ds_map_exists(struct_init_map, arg0))
    {
        if (!arg1)
            ds_map_add(struct_init_map, arg0, true);
        var names = array_length(struct_variables);
        for (var i = 0; i < names; i++)
        {
            if (!variable_struct_exists(arg0, struct_variables[i]))
                variable_struct_set(arg0, struct_variables[i], variable_struct_get(default_particle_data, struct_variables[i]));
        }
    }
    var new_data = 
    {
        timer: 0,
        x: x,
        y: y
    };
    var svar = array_length(struct_variables);
    for (var i = 0; i < svar; i++)
        variable_struct_set(new_data, struct_variables[i], variable_struct_get(arg0, struct_variables[i]));
    if (variable_struct_exists(arg0, "x_offset"))
        new_data.x += arg0.x_offset;
    if (variable_struct_exists(arg0, "y_offset"))
        new_data.y += arg0.y_offset;
    array_push(particle_data, new_data);
};