suwako / ShaderPlayground

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ShaderPlayground / include / lua / luaengine.hh
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1/*
2# 076 License
3
4Copyright (c) 076 Studio LLC
5
6Permission is hereby granted to any person obtaining a copy of the software
7Shader Playground (the "Software") to use, modify, merge, copy, publish, distribute,
8sublicense, and/or sell copies of the Software, subject to the following conditions:
9
10 1. **Origin Attribution**:
11 - You must not misrepresent the origin of the Software; you must not claim
12 you created the original Software.
13 - If the Software is used in a product, you must either:
14 a. Provide clear attribution in the product's documentation, user interface,
15 or other visible areas, **OR**
16 b. Pay the original developers a fee they specify in writing.
17 2. **Usage Restriction**:
18 - The Software, or any derivative works, dependencies, or libraries
19 incorporating it, must not be used for censorship or to suppress freedom of
20 speech, expression, or creativity. Prohibited uses include, but are not
21 limited to:
22 - Censorship of so-called "hate speech", visuals, non-mainstream opinions,
23 ideas, or objective reality.
24 - Tools or systems designed to restrict access to information or
25 artistic works.
26 3. **Notice Preservation**:
27 - This license and the above copyright notice must remain intact in all copies
28 of the source code.
29
30THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
31INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
32PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
33HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
34CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
35OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36*/
37#pragma once
38
39#include <util/types.hh>
40#include <util/structs.hh>
41#include <util/vector.hh>
42#include <shader/buffers.hh>
43#define SOL_LUAJIT 1
44#define SOL_ALL_SAFETIES_ON 1
45#include <sol.hpp>
46
47struct Program;
48
49namespace gui {
50 class ConsoleLog;
51} // namespace gui
52
53namespace lua {
54 struct LuaMesh {
55 vector<f32> vertices;
56 vector<u32> indices;
57
58 struct Attribute {
59 int location;
60 int size;
61 int stride;
62 int offset;
63 };
64
65 std::vector<Attribute> attr;
66
67 GLsizei GetIndexCount() const {
68 return static_cast<GLsizei>(indices.size());
69 }
70 };
71
72 struct MeshObject {
73 LuaMesh mesh;
74 Vector3 position;
75 Vector3 rotation;
76 Vector3 scale;
77 };
78
79 class LuaEngine {
80 public:
81 LuaEngine(const string &code, Program *prog, Info *info);
82 ~LuaEngine();
83
84 public:
85 vector<MeshObject> &GetObjects() { return m_Objects; }
86 const vector<MeshObject> &GetObjects() const { return m_Objects; }
87
88 public:
89 void Reload(const string &code);
90 void Init();
91 void Update();
92 bool Validate(const string &code);
93
94 public:
95 void SetProgram(Program *prog) { m_Program = prog; }
96 bool GetInitializationState() const { return m_IsInitialized; }
97 void SetInitializationState(bool state) { m_IsInitialized = state; }
98 string GetApiVersion() const { return m_ApiVersion; }
99
100 private:
101 void LogError(sol::error err);
102 void LogError(const std::exception &err);
103 void LogError(const string &err);
104 sol::state MakeAPI();
105 void BindEngine(sol::state &lua);
106 void BindSystem(sol::state &lua);
107 void BindIO(sol::state &lua);
108 void BindMath(sol::state &lua);
109 void BindGraphics(sol::state &lua);
110 void Execute(sol::state &lua);
111 i32 StringToKey(const string &key);
112
113 private:
114 vector<MeshObject> m_Objects;
115 sol::state m_Lua;
116 string m_Code;
117 bool m_IsInitialized = false;
118 Program *m_Program = nullptr;
119 Info *m_Info = {};
120 string m_ApiVersion = "1.0.0";
121 f32 m_LastTime = 0.f;
122 };
123} // namespace lua