void UI_Trace(uint fpar, uint numb, uint* tar) {
	byte p = 0;
	uint oldebx = 0;
	uint par;
	__asm {
		mov oldebx, ebp
	}
	for (uint a = 0; a < numb; a++) { //skip numb frames
		__asm {
			//go up 1 ebx
			mov ebx, oldebx
			mov ebx, [ebx]
			mov oldebx, ebx
		}
	}
	while (p < UI_MAX_EDIT_TEXT_FRAMES) {
		__asm {
			mov ebx, oldebx
			mov ebx, [ebx + 4]
			mov par, ebx
		}
		tar[p] = par;
		if (par == fpar) return;
		__asm {
			mov ebx, oldebx
			mov ebx, [ebx]
			mov oldebx, ebx
		}
		p++;
	}
}

bool UI_Same_Id(uint* left, uint* right) {
	for (byte a = 0; a < UI_MAX_EDIT_TEXT_FRAMES; a++) {
		if (left[a] != right[a]) return false;
	}
	return true;
}

void UI::GetEditTextId() {
	SecureZeroMemory(_activeEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
	UI_Trace(drawFuncLoc, 2, _activeEditText);
	if (UI_Same_Id(_activeEditText, _lastEditText)) _activeEditTextId++;
	else _activeEditTextId = 0;

	memcpy(_lastEditText, _activeEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
}

void UI::PreLoop() {
	SecureZeroMemory(_lastEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
	_activeEditTextId = 0;
}

#define _checkdraw assert(UI::CanDraw() && "UI functions can only be called from the Overlay function!");

string UI::EditText(float x, float y, float w, float h, float s, Vec4 bcol, string str, Font* font, bool delayed, bool* changed, Vec4 fcol, Vec4 hcol, Vec4 acol) {
	_checkdraw;
	GetEditTextId();
	bool isActive = (UI_Same_Id(_activeEditText, _editingEditText) && (_activeEditTextId == _editingEditTextId));

	if (changed) *changed = false;

	if (isActive) {
		auto al = font->alignment;
		font->Align(ALIGN_MIDLEFT);
		if (Editor::onFocus) {
			if ((Input::mouse0State == MOUSE_UP && !Rect(x, y, w, h).Inside(Input::mousePos)) || Input::KeyDown(Key_Enter)) {
				SecureZeroMemory(_editingEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
				_activeEditTextId = 0;
				if (changed && delayed) *changed = true;
				return delayed ? _editTextString : str;
			}
			if (Input::KeyDown(Key_Escape)) {
				SecureZeroMemory(_editingEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
				_activeEditTextId = 0;
				return str;
			}
			if (!delayed) _editTextString = str;
			_editTextCursorPos -= Input::KeyDown(Key_LeftArrow);
			_editTextCursorPos += Input::KeyDown(Key_RightArrow);
			_editTextCursorPos = clamp(_editTextCursorPos, 0, _editTextString.size());
			if (!Input::KeyHold(Key_Shift) && (Input::KeyDown(Key_LeftArrow) || Input::KeyDown(Key_RightArrow))) {
				_editTextCursorPos2 = _editTextCursorPos;
				_editTextBlinkTime = 0;
			}
			auto ssz = Input::inputString.size();
			if (ssz) {
				if (_editTextCursorPos == _editTextCursorPos2) {
					_editTextString = _editTextString.substr(0, _editTextCursorPos) + Input::inputString + _editTextString.substr(_editTextCursorPos);
					_editTextCursorPos += ssz;
					_editTextCursorPos2 += ssz;
				}
				else {
					_editTextString = _editTextString.substr(0, min(_editTextCursorPos, _editTextCursorPos2)) + Input::inputString + _editTextString.substr(max(_editTextCursorPos, _editTextCursorPos2));
					_editTextCursorPos = min(_editTextCursorPos, _editTextCursorPos2) + ssz;
					_editTextCursorPos2 = _editTextCursorPos;
				}
				if (changed) *changed = true;
				_editTextBlinkTime = 0;
			}
			if (Input::KeyDown(Key_Backspace)) {
				if (_editTextCursorPos == _editTextCursorPos2) {
					_editTextString = _editTextString.substr(0, _editTextCursorPos - 1) + _editTextString.substr(_editTextCursorPos);
					if (!!_editTextCursorPos) {
						_editTextCursorPos--;
						_editTextCursorPos2--;
					}
				}
				else {
					_editTextString = _editTextString.substr(0, min(_editTextCursorPos, _editTextCursorPos2)) + _editTextString.substr(max(_editTextCursorPos, _editTextCursorPos2));
					_editTextCursorPos = min(_editTextCursorPos, _editTextCursorPos2);
					_editTextCursorPos2 = _editTextCursorPos;
				}
				if (changed) *changed = true;
				_editTextBlinkTime = 0;
			}
			if (Input::KeyDown(Key_Delete) && _editTextCursorPos < _editTextString.size()) {
				_editTextString = _editTextString.substr(0, _editTextCursorPos) + _editTextString.substr(_editTextCursorPos + 1);
				if (changed) *changed = true;
				_editTextBlinkTime = 0;
			}
		}
		Engine::DrawQuad(x, y, w, h, black());
		Engine::DrawQuad(x + 1, y + 1, w - 2, h - 2, white());
		UI::Label(x + 2, y + 0.4f*h, s, _editTextString, font);
		float xp;
		if (!_editTextCursorPos) xp = x + 2;
		else xp = font->poss[_editTextCursorPos * 4].x*Display::width;
		float xp2;
		if (!_editTextCursorPos2) xp2 = x + 2;
		else xp2 = font->poss[_editTextCursorPos2 * 4].x*Display::width;
		if (_editTextCursorPos != _editTextCursorPos2) {
			Engine::DrawQuad(xp, y + 2, xp2 - xp, h - 4, hcol);
			UI::Label(min(xp, xp2), y + 0.4f*h, s, _editTextString.substr(min(_editTextCursorPos, _editTextCursorPos2), abs(_editTextCursorPos - _editTextCursorPos2)), font, acol);
		}
		_editTextBlinkTime += Time::delta;
		if (fmod(_editTextBlinkTime, 1) < 0.5f) Engine::DrawLine(Vec2(xp, y + 2), Vec2(xp, y + h - 2), (_editTextCursorPos == _editTextCursorPos2)? black() : white(), 1);
		font->Align(al);
		return delayed ? str : _editTextString;
	}
	else if(Engine::Button(x, y, w, h, bcol, str, s, font, fcol, false) == MOUSE_RELEASE) {
		memcpy(_editingEditText, _activeEditText, UI_MAX_EDIT_TEXT_FRAMES * 4);
		_editingEditTextId = _activeEditTextId;
		_editTextCursorPos = str.size();
		_editTextCursorPos2 = 0;
		_editTextBlinkTime = 0;
		if (delayed) _editTextString = str;
	}
	return str;
}