Deltarune (Chapter 4) script viewer

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gml_Object_obj_lightbeamfx_Draw_0

(view raw script w/o annotations or w/e)
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if (!surface_exists(surfmask))
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    surfmask = surface_create(640, 480);
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surface_set_target(surfmask);
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draw_clear_alpha(c_white, 1);
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gpu_set_blendmode(bm_subtract);
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with (obj_light_area_mask)
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{
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    if (dustparticles_on)
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    {
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        var _xx = screenx();
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        var _yy = screeny();
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        draw_sprite_ext(sprite_index, image_index, _xx, _yy, image_xscale, image_yscale, image_angle, c_white, 1);
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    }
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}
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gpu_set_blendmode(bm_normal);
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surface_reset_target();
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if (!surface_exists(surfdust))
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    surfdust = surface_create(640, 480);
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if (!surface_exists(surfdust_tiled))
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    surfdust_tiled = surface_create(640, 480);
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surface_set_target(surfdust);
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draw_clear_alpha(c_black, 0);
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part_system_drawit(ps);
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surface_reset_target();
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surface_set_target(surfdust_tiled);
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draw_clear_alpha(c_black, 0);
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draw_surface_tiled(surfdust, -camera_get_view_x(view_camera[0]), -camera_get_view_y(view_camera[0]));
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gpu_set_blendmode(bm_subtract);
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draw_surface(surfmask, 0, 0);
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gpu_set_blendmode(bm_normal);
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surface_reset_target();
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draw_set_alpha(image_alpha);
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draw_surface(surfdust_tiled, camera_get_view_x(view_camera[0]), camera_get_view_y(view_camera[0]));
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draw_set_alpha(1);