Initial commit.

4 files changed, 527 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..2dd3508
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2020 Nathanael Sensfelder
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..aed62fb
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+# ![Tonkadur](https://tonkadur.of.tacticians.online/images/tonkadur_logo_black_as_path.svg)
+Python3 interpreter for [Tonkadur](https://tonkadur.of.tacticians.online/),
+a narrative scripting language.
+
+This interpreter is mainly for testing purposes and should likely not be used
+as-is within your game engine.
diff --git a/tonkadur.py b/tonkadur.py
new file mode 100644
index 0000000..d4b2e73
--- /dev/null
+++ b/tonkadur.py
@@ -0,0 +1,282 @@
+import copy
+import json
+import math
+import random
+
+class Tonkadur:
+    def generate_instance_of (self, typedef):
+        if (typedef['category'] == "boolean"):
+            return False
+        elif (typedef['category'] == "float"):
+            return 0.0
+        elif (typedef['category'] == "int"):
+            return 0
+        elif (typedef['category'] == "rich_text"):
+            result = dict()
+            result['content'] = []
+            result['effect'] = None
+            return result
+        elif (typedef['category'] == "string"):
+            return ""
+        elif (typedef['category'] == "list"):
+            return dict()
+        elif (typedef['category'] == "pointer"):
+            return []
+        elif (typedef['category'] == "structure"):
+            return copy.deepcopy(self.types[typedef['name']])
+
+    def __init__ (self, json_file):
+        self.memory = dict()
+        self.types = dict()
+        self.sequences = dict()
+        self.code = []
+        self.program_counter = 0
+        self.allocated_data = 0
+        self.available_choices = []
+
+        with open(json_file, 'r') as f:
+            json_content = json.load(f)
+
+            #### INITIALIZE TYPES ##############################################
+            for typedef in json_content['structure_types']:
+                new_type = dict()
+
+                for field in typedef['fields']:
+                    new_type[field['name']] = self.generate_instance_of(field['type'])
+
+                self.types[typedef['name']] = new_type
+
+            #### INITIALIZE VARIABLES ##########################################
+            for vardef in json_content['variables']:
+                self.memory[vardef['name']] = self.generate_instance_of(vardef['type'])
+
+            #### INITIALIZE SEQUENCES ##########################################
+            for seqdef in json_content['sequences']:
+                self.sequences[seqdef['name']] = seqdef['line']
+
+            #### INITIALIZE CODE ###############################################
+            self.code = json_content['code']
+
+
+    def compute (self, computation):
+        computation_category = computation['category']
+
+        if (computation_category == "add_rich_text_effect"):
+            effect = dict()
+            effect['name'] = computation['effect']
+            effect['parameters'] = []
+
+            for c in computation['parameters']:
+                effect['parameters'].append(self.compute(c))
+
+            result = dict()
+            result['content'] = []
+            result['effect'] = effect
+
+            for c in computation['content']:
+                result['content'].append(self.compute(c))
+
+            return result
+        elif (computation_category == "cast"):
+            origin_type = computation['from']['category']
+            target_type = computation['to']['category']
+            content = self.compute(computation['content'])
+
+            if (target_type == "string"):
+                return str(content)
+            elif (target_type == "float"):
+                return float(content)
+            elif (target_type == "boolean"):
+                if (origin_type == "string"):
+                    return (content == "true")
+                elif (origin_type == "int"):
+                    return (content != 0)
+            elif (target_type == "int"):
+                if (origin_type == "float"):
+                    return math.floor(content)
+                else:
+                    return int(content)
+        elif (computation_category == "constant"):
+            target_type = computation['type']['category']
+            content = computation['value']
+
+            if (target_type == "string"):
+                return content
+            elif (target_type == "float"):
+                return float(content)
+            elif (target_type == "boolean"):
+                return (content == "true")
+            elif (target_type == "int"):
+                return int(content)
+            else:
+                print("Unknown Constant type '" + str(target_type) + "'")
+                raise "error"
+        elif (computation_category == "if_else"):
+            cond = self.compute(computation['condition'])
+
+            if (cond):
+                return self.compute(computation['if_true'])
+            else:
+                return self.compute(computation['if_false'])
+        elif (computation_category == "new"):
+            address = ".alloc." + self.allocated_data
+            self.allocated_data += 1
+            self.memory[address] = self.generate_instance_of(computation['target'])
+
+            return [address]
+        elif (computation_category == "operation"):
+            operator = computation['operator']
+            x = self.compute(computation['x'])
+            y = self.compute(computation['y']) if ('y' in computation) else None
+            if (operator == "divide"):
+                if (isinstance(x, int)):
+                    return x // y
+                else:
+                    return x / y
+            elif (operator == "minus"):
+                return x - y
+            elif (operator == "modulo"):
+                return x % y
+            elif (operator == "plus"):
+                return x + y
+            elif (operator == "power"):
+                return x ** y
+            elif (operator == "rand"):
+                return random.randint(x, y)
+            elif (operator == "times"):
+                return x * y
+            elif (operator == "and"):
+                return x and y
+            elif (operator == "not"):
+                return not x
+            elif (operator == "less_than"):
+                return x < y
+            elif (operator == "equals"):
+                return x == y
+            else:
+                print("unknown operator " + operator)
+
+        elif (computation_category == "ref"):
+            return [self.compute(computation['address'])]
+        elif (computation_category == "relative_ref"):
+            base = self.compute(computation['base'])
+            base.append(self.compute(computation['extra']))
+            return base
+        elif (computation_category == "rich_text"):
+            result = dict()
+            result['effect'] = None
+            result['content'] = []
+            for c in computation['content']:
+                result['content'].append(self.compute(c))
+
+            return result
+        elif (computation_category == "size"):
+            target = self.memory
+            access = self.compute(computation['reference'])
+
+            for addr in access:
+                target = target[addr]
+
+            return len(target)
+        elif (computation_category == "value_of"):
+            target = self.memory
+            access = self.compute(computation['reference'])
+
+            for addr in access:
+                target = target[addr]
+
+            return target
+
+    def resolve_choice_to (self, line):
+        self.available_choices = []
+        self.program_counter = line
+
+    def run (self):
+        while True:
+            #print("\nline: " + str(self.program_counter))
+            instruction = self.code[self.program_counter]
+            instruction_category = instruction['category']
+            #print("instruction:" + str(instruction))
+
+            if (instruction_category == "add_choice"):
+                self.available_choices.append(
+                    [
+                        self.compute(instruction['label']),
+                        self.compute(instruction['address'])
+                    ]
+                )
+                self.program_counter += 1
+            elif (instruction_category == "assert"):
+                condition = self.compute(instruction['condition'])
+
+                if (not condition):
+                    result = dict()
+                    result["category"] = "assert"
+                    result["line"] = self.program_counter
+                    result["message"] = self.compute(instruction['message'])
+                    self.program_counter += 1
+                    return result
+
+                self.program_counter += 1
+            elif (instruction_category == "display"):
+                result = dict()
+                result["category"] = "display"
+                result["content"] = self.compute(instruction['content'])
+                self.program_counter += 1
+
+                return result
+            elif (instruction_category == "end"):
+                result = dict()
+                result["category"] = "end"
+
+                return result
+            elif (instruction_category == "event_call"):
+                result = dict()
+                result["category"] = "event"
+                result["name"] = instruction["event"]
+                params = []
+
+                for param in instruction['parameters']:
+                    params.append(self.compute(param))
+
+                result["parameters"] = params
+
+                self.program_counter += 1
+                return result
+            elif (instruction_category == "remove"):
+                pre_val = self.memory
+                current_val = pre_val
+                last_access = ""
+
+                for access in self.compute(instruction["reference"]):
+                    pre_val = current_val
+                    last_access = access
+                    current_val = current_val[access]
+
+                del pre_val[last_access]
+
+                self.program_counter += 1
+            elif (instruction_category == "resolve_choices"):
+                result = dict()
+                result["category"] = "resolve_choices"
+                result["choices"] = self.available_choices
+
+                return result
+            elif (instruction_category == "set_pc"):
+                self.program_counter = self.compute(instruction["value"])
+            elif (instruction_category == "set_value"):
+                pre_val = self.memory
+                current_val = pre_val
+                last_access = ""
+                access_full = self.compute(instruction["reference"])
+
+                for access in access_full:
+                    pre_val = current_val
+                    last_access = access
+                    if (access in current_val):
+                        current_val = current_val[access]
+
+                pre_val[last_access] = self.compute(instruction["value"])
+
+                self.program_counter += 1
+
diff --git a/tonkadur_ui.py b/tonkadur_ui.py
new file mode 100644
index 0000000..4ffaca4
--- /dev/null
+++ b/tonkadur_ui.py
@@ -0,0 +1,48 @@
+import argparse
+
+import tonkadur
+
+parser = argparse.ArgumentParser(
+    description = (
+        "Tonkadur Python Interpreter"
+    )
+)
+
+parser.add_argument(
+    '-f',
+    '--file',
+    dest='world_file',
+    type = str,
+    help = 'Wyrd JSON file to load.',
+)
+
+args = parser.parse_args()
+state = tonkadur.Tonkadur(args.world_file)
+
+#try:
+while True:
+    result = state.run()
+    result_category = result['category']
+
+    if (result_category == "end"):
+        print("Program ended")
+        break
+    elif (result_category == "display"):
+        print(result['content'])
+    elif (result_category == "assert"):
+        print("Assert failed at line " + str(result['line']) + ":" + str(result['message']))
+    elif (result_category == "resolve_choices"):
+        current_choice = 0;
+
+        for choice in result['choices']:
+            print(str(current_choice) + ". " + ''.join(choice[0]['content']))
+            current_choice += 1
+
+        user_choice = input("Your choice? ")
+        state.resolve_choice_to(result['choices'][int(user_choice)][1])
+    elif (result_category == "event"):
+        print("Unhandled event:" + str(result))
+
+#except Error:
+#    print("failed.\n")
+print(str(state.memory))