571 lines
15 KiB
GDScript
571 lines
15 KiB
GDScript
extends Reference
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static func dialog_from_text(text):
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var label_regex = RegEx.new()
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label_regex.compile("[A-Z0-9_]+:")
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# validation
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var has_question = false
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var lines = text.split("\n")
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var new_dialog = Dialog.new()
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# intermediate state
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var current_choice_segment
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var choices = 0
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if current_choice_segment == null:
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current_choice_segment = ChoiceSegment.new()
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var line_number = 0
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for line in lines:
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line_number += 1
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# comment lines
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if line.begins_with("#"):
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pass
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# is flag unset
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elif line.begins_with("!@"):
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var l = line.right(3).strip_edges()
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var flag = l.left(l.length() - 1)
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# if OS.is_debug_build(): print("flag to false: ", flag)
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new_dialog.add_segment(FlagSetSegment.new(flag, false))
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# is goto, or conditional goto
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elif line.begins_with("!"):
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var label_end = line.find(",")
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# unconditional goto
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if label_end == -1:
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var label = line.substr(2, line.length() - 3).strip_edges()
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# if OS.is_debug_build(): print("goto: ", label)
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new_dialog.add_segment(GotoSegment.new(label))
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else: # conditional goto
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var label = line.substr(2, label_end - 2).strip_edges()
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var target_end = line.find("]")
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var target = line.substr(label_end + 1, (target_end - 1) - label_end).strip_edges()
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# if OS.is_debug_build(): print("goto: ", target, " - ", label)
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new_dialog.add_segment(ConditionalGotoSegment.new(target, label, true))
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# is either random goto or question
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elif line.begins_with("?"):
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var str_line = line.strip_edges().right(1)
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# question, initiates dialog, treat first encountered question as question
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if str_line.begins_with("<"):
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var q_line = str_line.strip_edges()
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has_question = true
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var subject_right_bracket_index = q_line.find(">")
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var subject = q_line.substr(1, subject_right_bracket_index - 1).strip_edges()
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var question_text = q_line.right(subject_right_bracket_index + 1).strip_edges()
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var question_segment = QuestionSegment.new(question_text, subject)
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new_dialog.add_segment(question_segment)
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else: # random goto: picks one of the choices to goto, used like ?[P1, P2, P3]
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var left_bracket = str_line.find("[")
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var right_bracket = str_line.find("]")
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if left_bracket == -1:
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printerr("couldn't find left [ on line: %d" % line_number)
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assert(false)
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if right_bracket == -1:
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printerr("couldn't find right ] on line: %d" % line_number)
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assert(false)
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# if there's actually even a single thing inside
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if right_bracket - left_bracket > 1:
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var arg_string = str_line.substr(left_bracket + 1, (right_bracket - left_bracket) - 1)
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var args = arg_string.split(",", false)
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var stripped_args = []
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for arg in args:
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stripped_args.push_back(arg.strip_edges())
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# if OS.is_debug_build(): print("random goto, arg_string: %s" % arg_string)
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new_dialog.add_segment(RandomGotoSegment.new(stripped_args))
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# is flag set, either a normal set to true with @[SOME_FLAG] or a set to string with @[FLAG, STR]
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elif line.begins_with("@"):
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var l = line.right(2)
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var comma_index = l.find(",")
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if comma_index == -1:
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var flag = l.left(l.length() - 1)
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# if OS.is_debug_build(): print("flag to true: ", flag)
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new_dialog.add_segment(FlagSetSegment.new(flag, true))
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else:
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var flag = l.left(comma_index).strip_edges()
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var arg_end = l.find("]")
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var arg_int = l.right(comma_index + 1)
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var arg = arg_int.left(arg_int.length() - 1).strip_edges()
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# if OS.is_debug_build(): print("flag: ", flag, " with arg: ", arg)
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new_dialog.add_segment(FlagSetSegment.new(flag, arg))
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# is label, can goto
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elif line.ends_with(":") and label_regex.search(line):
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var label = line.left(line.length() - 1).strip_edges()
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# if OS.is_debug_build(): print("label: ", label)
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new_dialog.add_segment(LabelSegment.new(label))
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# is choice in conversation by player
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elif line.begins_with("["):
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var right_end_index = line.find("]")
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var choice = line.substr(1, right_end_index - 1).strip_edges()
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var response = line.right(right_end_index + 1).strip_edges()
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# is it a jump choice?
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var left_brace_index = response.find("[")
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var right_brace_index = response.find("]")
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if left_brace_index != -1 and right_brace_index != -1:
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var jump_target = response.substr(left_brace_index + 1, right_brace_index - 1)
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# if OS.is_debug_build(): print("choice: ", choice, " target: ", jump_target)
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current_choice_segment.add_choice_with_jump(choice, jump_target)
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else:
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var subject_right_comma_index = response.find(",")
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var subject_right_bracket_index = response.find(">")
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# is response with <SUBJECT, EXPR>
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if response.begins_with("<") and subject_right_bracket_index > 0 and subject_right_comma_index < subject_right_bracket_index:
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var subject = response.substr(1, subject_right_comma_index - 1).strip_edges()
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var expression = response.substr(subject_right_comma_index + 1, (subject_right_bracket_index - 1) - subject_right_comma_index).strip_edges()
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var line_text = response.right(subject_right_bracket_index + 1).strip_edges()
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# if OS.is_debug_build(): print("choice: ", choice, " response: ", line_text, " with: <", subject, ", ", expression, ">")
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current_choice_segment.add_choice(choice, DialogWithSubjectExpressionSegment.new(line_text, subject, expression))
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elif response.begins_with("<"): # is response with <SUBJECT>
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var subject = response.substr(1, subject_right_bracket_index - 1).strip_edges()
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var line_text = response.right(subject_right_bracket_index + 1).strip_edges()
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# if OS.is_debug_build(): print("choice: ", choice, " response: ", line_text, " with: <", subject, ">")
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current_choice_segment.add_choice(choice, DialogWithSubjectSegment.new(line_text, subject))
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else:
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# if OS.is_debug_build(): print("choice: ", choice, " response: ", response)
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current_choice_segment.add_choice(choice, response)
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choices += 1
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# we're full
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if choices == 3:
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# if OS.is_debug_build(): print("choice segment created.")
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new_dialog.add_segment(current_choice_segment)
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# setup new one for next round
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current_choice_segment = ChoiceSegment.new()
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choices = 0
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elif line.begins_with("<"):
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# test for right comma and >
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var subject_right_comma_index = line.find(",")
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var subject_right_bracket_index = line.find(">")
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# is <SUBJECT, EXPRESSION> dialog
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if subject_right_comma_index > 0 and subject_right_comma_index < subject_right_bracket_index:
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var subject = line.substr(1, subject_right_comma_index - 1).strip_edges()
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var expression = line.substr(subject_right_comma_index + 1, (subject_right_bracket_index - 1) - subject_right_comma_index).strip_edges()
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var line_text = line.right(subject_right_bracket_index + 1).strip_edges()
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var dialog_subject_segment = DialogWithSubjectExpressionSegment.new(line_text, subject, expression)
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new_dialog.add_segment(dialog_subject_segment)
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else: # is <SUBJECT> dialog
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var subject = line.substr(1, subject_right_bracket_index - 1).strip_edges()
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var line_text = line.right(subject_right_bracket_index + 1).strip_edges()
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var dialog_subject_segment = DialogWithSubjectSegment.new(line_text, subject)
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new_dialog.add_segment(dialog_subject_segment)
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# simple function calls, can look like: > FUNC, but also like > FUNC [A, B, C, D]
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# yieldable function calls can look like: >> FUNC, but also like >> FUNC [A, B, C, D]
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elif line.begins_with(">"):
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var str_line = line.right(1).strip_edges()
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var is_yielding_function = false
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if str_line.begins_with(">"):
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str_line = str_line.right(1).strip_edges()
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is_yielding_function = true
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var left_bracket = str_line.find("[")
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var right_bracket = str_line.find("]")
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# has left bracket, should have right bracket, has params
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if (left_bracket != -1 and right_bracket != -1) or \
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(left_bracket != -1 and right_bracket == -1) or \
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(left_bracket == -1 and right_bracket != -1):
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var command_end = str_line.find("[")
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var command = str_line.left(command_end).strip_edges()
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# if OS.is_debug_build(): print("parsing command with args: ", command)
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if left_bracket == -1:
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printerr("couldn't find left [ on line: %d" % line_number)
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assert(false)
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if right_bracket == -1:
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printerr("couldn't find right ] on line: %d" % line_number)
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assert(false)
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var args_str = str_line.substr(left_bracket + 1, (right_bracket - left_bracket) - 1).strip_edges()
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var args = args_str.split(",", false)
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var stripped_args = []
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for a in args:
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stripped_args.push_back(a.strip_edges())
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if is_yielding_function:
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var call_segment = YieldCallSegment.new(command, stripped_args)
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new_dialog.add_segment(call_segment)
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else:
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var call_segment = CallSegment.new(command, stripped_args)
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new_dialog.add_segment(call_segment)
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else: # no params, argless call
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var command = str_line.strip_edges()
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# if OS.is_debug_build(): print("parsing command: ", command)
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if is_yielding_function:
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var call_segment = YieldCallSegment.new(command)
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new_dialog.add_segment(call_segment)
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else:
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var call_segment = CallSegment.new(command)
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new_dialog.add_segment(call_segment)
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else: # is normal text
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var line_text = line.strip_edges()
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# if line is not empty, process
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if not line_text.empty():
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var dialog_segment = DialogSegment.new(line_text)
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new_dialog.add_segment(dialog_segment)
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return new_dialog
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static func parse_dialog_line(text):
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pass
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# types of segments of text, held in Dialogs array
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class QuestionSegment:
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var subject
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var question
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func _init(q, s):
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question = q
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subject = s
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func get_content():
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return question
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class DialogSegment:
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var text
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func _init(t):
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text = t
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func get_content():
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return text
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class DialogWithSubjectSegment:
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var text
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var subject
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func _init(t, s):
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text = t
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subject = s
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func get_content():
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return text
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class DialogWithSubjectExpressionSegment:
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var text
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var subject
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var expression
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func _init(t, s, e):
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text = t
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subject = s
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expression = e
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func get_content():
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return text
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class Choice:
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var choice
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var response
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func _init(c, r):
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choice = c
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response = r
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func get_choice():
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return choice
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func get_response():
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return response
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class ChoiceWithJump:
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var choice
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var target
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func _init(c, t):
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choice = c
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target = t
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func get_choice():
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return choice
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func get_target():
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return target
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class ChoiceSegment:
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var choices
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func _init():
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choices = []
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func add_choice(choice, response):
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var new_choice = Choice.new(choice, response)
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choices.push_back(new_choice)
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func add_choice_with_jump(choice, target):
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var new_choice = ChoiceWithJump.new(choice, target)
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choices.push_back(new_choice)
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func get_choices():
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return choices
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class LabelSegment:
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var label
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func _init(l):
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label = l
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class GotoSegment:
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var target
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func _init(t):
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target = t
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class RandomGotoSegment:
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var targets
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func _init(t):
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targets = t
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class ConditionalGotoSegment extends GotoSegment:
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var variable
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var expected_value
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func _init(t, v, e).(t):
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variable = v
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expected_value = e
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func test(registry):
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if variable in registry:
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var v = registry[variable]
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return v
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else:
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return false
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class CallSegment:
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var fname
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var args
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func _init(f, a = null):
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fname = f
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args = a
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func call(l, r):
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if l.has(fname):
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if args != null: return l[fname].call_func(args)
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else: return l[fname].call_func([])
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elif r.has(fname):
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if args != null: return r[fname].call_func(args)
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else: return r[fname].call_func([])
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class YieldCallSegment extends CallSegment:
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var started
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var finished
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func _init(f, a = null).(f, a):
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started = false
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func call(l, r):
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started = true
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finished = false
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return .call(l, r)
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func get_content():
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return "..."
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class FlagSetSegment:
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var flag
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var value
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func _init(f, v):
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flag = f
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value = v
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func set(registry):
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registry[flag] = value
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class Dialog:
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var segment_index = -1
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var segments
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# goto label dictionary
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var labels
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# local registry
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var locals
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# dependency, registry of stuff
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var registry
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# yield state
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var is_yielding
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func _init():
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is_yielding = false
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segments = []
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labels = {}
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locals = {}
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func get_local_registry():
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return locals
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func set_registry(r):
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registry = r
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func add_segment(s):
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if s is GotoSegment:
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if not s.target in labels:
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labels[s.target] = -1
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elif s is RandomGotoSegment:
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for t in s.targets:
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if not t in labels:
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labels[t] = -1
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elif s is LabelSegment:
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var sz = segments.size()
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if not labels.has(s.label) or labels[s.label] == -1:
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# if OS.is_debug_build(): print("added label: ", s.label, " to: ", sz)
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labels[s.label] = sz
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else:
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printerr("ERROR: label with name: %s already registered at %d!" % [s.label, labels[s.label]])
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assert(labels[s.label] != -1)
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segments.push_back(s)
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func push_instruction():
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if is_eof(): return null
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var new_segment = segments[segment_index]
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while (new_segment is GotoSegment \
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or new_segment is RandomGotoSegment \
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or new_segment is LabelSegment \
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or new_segment is CallSegment \
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or new_segment is FlagSetSegment) and not is_yielding and not is_eof():
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new_segment = segments[segment_index]
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if new_segment is ConditionalGotoSegment:
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if new_segment.test(registry): # if true, jump to offset
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var offset = labels[new_segment.target]
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if offset == -1:
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printerr("could not find label: %s" % new_segment.target)
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assert(offset != -1)
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# if OS.is_debug_build(): print("conditionally jumped to offset: ", offset)
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segment_index = offset
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else: # else skip
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segment_index += 1
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elif new_segment is RandomGotoSegment:
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var rand_idx = floor(rand_range(0, new_segment.targets.size()))
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var rand_target = new_segment.targets[rand_idx]
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var offset = labels[rand_target]
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if offset == -1:
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printerr("could not find label: %s" % rand_target)
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assert(offset != -1)
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# if OS.is_debug_build(): print("random jumped to: ", offset, " with: ", rand_target)
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segment_index = offset
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elif new_segment is GotoSegment:
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var offset = labels[new_segment.target]
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if offset == -1:
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printerr("could not find label: %s" % new_segment.target)
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assert(offset != -1)
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# if OS.is_debug_build(): print("jumped to: ", offset, " with: ", new_segment.target, " at: ", segment_index)
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segment_index = offset
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elif new_segment is YieldCallSegment:
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if not new_segment.started:
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var state = new_segment.call(locals, registry)
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if state != null:
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var obj = state[0]
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var sgn = state[1]
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is_yielding = true
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_do_yield_wait(obj, sgn, new_segment)
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else:
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segment_index += 1
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elif new_segment is CallSegment:
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new_segment.call(locals, registry)
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segment_index += 1
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elif new_segment is FlagSetSegment:
|
|
new_segment.set(registry)
|
|
segment_index += 1
|
|
elif new_segment is LabelSegment:
|
|
segment_index += 1
|
|
if not is_eof():
|
|
return segments[segment_index]
|
|
else:
|
|
return null
|
|
|
|
func advance():
|
|
if not is_yielding:
|
|
segment_index += 1
|
|
return push_instruction()
|
|
else:
|
|
return push_instruction()
|
|
|
|
# external jump, is fudge
|
|
func jump(target):
|
|
segment_index = labels[target]
|
|
return push_instruction()
|
|
|
|
func is_eof():
|
|
return segment_index >= segments.size()
|
|
|
|
func reset():
|
|
segment_index = -1
|
|
|
|
func _do_yield_wait(obj, sgn, segment):
|
|
yield(obj, sgn)
|
|
segment.finished = true
|
|
is_yielding = false
|
|
printt("Dialog VM: %s %s %s" % [obj, sgn, "completed"])
|