function Node_Trail(_x, _y, _group = -1) : Node_Processor(_x, _y, _group) constructor { name = "Trail"; use_cache = true; inputs[| 0] = nodeValue(0, "Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0); inputs[| 1] = nodeValue(1, "Max life", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 3); inputs[| 2] = nodeValue(2, "Step", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 1); inputs[| 3] = nodeValue(3, "Alpha decrease", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0) .setDisplay(VALUE_DISPLAY.slider, [0, 1, 0.01]); inputs[| 4] = nodeValue(4, "Blend mode", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 0) .setDisplay(VALUE_DISPLAY.enum_scroll, BLEND_TYPES ); outputs[| 0] = nodeValue(0, "Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, PIXEL_SURFACE); input_display_list = [ ["Trail settings", false], 0, 1, 2, 4, 3 ]; temp_surf = [ PIXEL_SURFACE, PIXEL_SURFACE ]; static process_data = function(_outSurf, _data, _output_index, _array_index) { if(!inputs[| 0].value_from) return _outSurf; if(array_length(cached_output) != ANIMATOR.frames_total + 1) return _outSurf for(var i = 0; i < 2; i++) { temp_surf[i] = surface_verify(temp_surf[i], surface_get_width(_outSurf), surface_get_height(_outSurf)); surface_set_target(temp_surf[i]); draw_clear_alpha(0, 0); surface_reset_target(); } var _life = _data[1]; var _step = _data[2]; var _alpha = _data[3]; var _blend = _data[4]; var aa = 1; var res_index = 0; var frame_amo = min(_life, floor(ANIMATOR.current_frame / _step)); var st_frame = ANIMATOR.current_frame - frame_amo * _step; for(var i = 0; i <= _life; i++) { var frame_idx = clamp(st_frame + i * _step, 0, ANIMATOR.frames_total - 1); var bg = i % 2; var fg = !bg; var aa = 1 - _alpha * (_life - i); surface_set_target(temp_surf[bg]); if(i == _life) draw_surface_safe(_data[0], 0, 0); else if(is_surface(cached_output[frame_idx])) draw_surface_blend(temp_surf[fg], cached_output[frame_idx], _blend, aa); surface_reset_target(); res_index = bg; } surface_set_target(_outSurf); draw_clear_alpha(0, 0); BLEND_OVER draw_surface_safe(temp_surf[res_index], 0, 0); BLEND_NORMAL surface_reset_target(); cacheCurrentFrame(_data[0]); return _outSurf; } }