Deltarune (Chapter 3) script viewer

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gml_GlobalScript_scr_draw_sprite_pos_fixed

(view raw script w/o annotations or w/e)
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vertex_format_begin();
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vertex_format_add_colour();
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vertex_format_add_position();
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vertex_format_add_normal();
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global.format_perspective = vertex_format_end();
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function draw_sprite_pos_fixed(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10)
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{
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    draw_sprite_pos_fixed_col(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, 16777215, arg10);
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}
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function draw_sprite_pos_fixed_col(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11)
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{
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    var texture = sprite_get_texture(arg0, arg1);
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    var uvs = sprite_get_uvs(arg0, arg1);
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    var ax = arg4 - arg8;
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    var ay = arg5 - arg9;
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    var bx = arg2 - arg6;
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    var by = arg3 - arg7;
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    var can = (ax * by) - (ay * bx);
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    if (can != 0)
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    {
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        var cx = arg8 - arg6;
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        var cy = arg9 - arg7;
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        var s = ((ax * cy) - (ay * cx)) / can;
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        if (s > 0 && s < 1)
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        {
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            var t = ((bx * cy) - (by * cx)) / can;
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            if (t > 0 && t < 1)
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            {
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                var q4 = 1 / (1 - t);
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                var q3 = 1 / (1 - s);
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                var q2 = 1 / t;
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                var q1 = 1 / s;
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                var v_buffer = vertex_create_buffer();
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                vertex_begin(v_buffer, global.format_perspective);
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                vertex_colour(v_buffer, arg10, arg11);
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                vertex_position(v_buffer, arg2, arg3);
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                vertex_normal(v_buffer, q1 * uvs[0], q1 * uvs[1], q1);
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                vertex_colour(v_buffer, arg10, arg11);
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                vertex_position(v_buffer, arg4, arg5);
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                vertex_normal(v_buffer, q2 * uvs[2], q2 * uvs[1], q2);
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                vertex_colour(v_buffer, arg10, arg11);
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                vertex_position(v_buffer, arg8, arg9);
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                vertex_normal(v_buffer, q4 * uvs[0], q4 * uvs[3], q4);
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                vertex_colour(v_buffer, arg10, arg11);
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                vertex_position(v_buffer, arg6, arg7);
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                vertex_normal(v_buffer, q3 * uvs[2], q3 * uvs[3], q3);
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                vertex_end(v_buffer);
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                shader_set(sh_perspective);
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                vertex_submit(v_buffer, pr_trianglestrip, texture);
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                shader_reset();
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                vertex_delete_buffer(v_buffer);
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            }
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        }
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    }
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}
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function draw_surface_pos_fixed(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10)
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{
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    var texture = surface_get_texture(arg0);
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    var ax = arg4 - arg8;
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    var ay = arg5 - arg9;
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    var bx = arg2 - arg6;
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    var by = arg3 - arg7;
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    var can = (ax * by) - (ay * bx);
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    if (can != 0)
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    {
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        var cx = arg8 - arg6;
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        var cy = arg9 - arg7;
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        var s = ((ax * cy) - (ay * cx)) / can;
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        if (s > 0 && s < 1)
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        {
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            var t = ((bx * cy) - (by * cx)) / can;
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            if (t > 0 && t < 1)
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            {
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                var q4 = 1 / (1 - t);
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                var q3 = 1 / (1 - s);
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                var q2 = 1 / t;
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                var q1 = 1 / s;
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                var v_buffer = vertex_create_buffer();
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                vertex_begin(v_buffer, global.format_perspective);
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                vertex_colour(v_buffer, c_white, arg10);
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                vertex_position(v_buffer, arg2, arg3);
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                vertex_normal(v_buffer, q1 * 0, q1 * 0, q1);
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                vertex_colour(v_buffer, c_white, arg10);
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                vertex_position(v_buffer, arg4, arg5);
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                vertex_normal(v_buffer, q2 * 1, q2 * 0, q2);
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                vertex_colour(v_buffer, c_white, arg10);
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                vertex_position(v_buffer, arg8, arg9);
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                vertex_normal(v_buffer, q4 * 0, q4 * 1, q4);
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                vertex_colour(v_buffer, c_white, arg10);
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                vertex_position(v_buffer, arg6, arg7);
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                vertex_normal(v_buffer, q3 * 1, q3 * 1, q3);
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                vertex_end(v_buffer);
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                shader_set(sh_perspective);
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                vertex_submit(v_buffer, pr_trianglestrip, texture);
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                shader_reset();
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                vertex_delete_buffer(v_buffer);
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            }
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        }
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    }
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}