rpfm_lib 4.7.4

This crate contains the basic functionality for interacting with Total War files.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

//---------------------------------------------------------------------------//
// Copyright (c) 2017-2024 Ismael Gutiérrez González. All rights reserved.
//
// This file is part of the Rusted PackFile Manager (RPFM) project,
// which can be found here: https://github.com/Frodo45127/rpfm.
//
// This file is licensed under the MIT license, which can be found here:
// https://github.com/Frodo45127/rpfm/blob/master/LICENSE.
//---------------------------------------------------------------------------//

//! This is a module to read/write binary RigidModel files, v6.
//!
//! For internal use only.

use crate::error::Result;
use crate::binary::{ReadBytes, WriteBytes};
use crate::files::rigidmodel::*;
use crate::files::rigidmodel::materials::*;

//---------------------------------------------------------------------------//
//                            Implementation
//---------------------------------------------------------------------------//

impl RigidModel {

    pub fn read_v6<R: ReadBytes>(&mut self, data: &mut R) -> Result<()> {
        let lod_count = data.read_u16()?;
        self.uk_1 = data.read_u16()?;
        self.skeleton_id = data.read_string_u8_0padded(PADDED_SIZE_128)?;

        // First pass to get the lods headers.
        self.lods = Vec::with_capacity(lod_count as usize);
        for _ in 0..lod_count {
            let mut lod = Lod::default();

            let mesh_count = data.read_u32()?;
            lod.mesh_blocks = Vec::with_capacity(mesh_count as usize);

            // Unused by the parser.
            let _vertices_data_length = data.read_u32()?;
            let _indices_data_length = data.read_u32()?;
            let _start_offset = data.read_u32()?;

            lod.visibility_distance = data.read_f32()?;

            self.lods.push(lod);
        }

        // Second pass is to populate the lods data.
        for lod in &mut self.lods {
            for _ in 0..lod.mesh_blocks.capacity() {
                let mut mesh = MeshBlock::default();

                // Mesh data
                mesh.mesh.material_type = MaterialType::try_from(data.read_u16()?)?;

                // Possible mesh lenght.
                let _render_flags = data.read_u16()?;
                let _mesh_section_size = data.read_u32()?;
                let _vertex_offset = data.read_u32()?;
                let vertex_count = data.read_u32()?;
                let _index_offset = data.read_u32()?;
                let index_count = data.read_u32()?;

                mesh.mesh.min_bb = Vector3::new(data.read_f32()?, data.read_f32()?, data.read_f32()?);
                mesh.mesh.max_bb = Vector3::new(data.read_f32()?, data.read_f32()?, data.read_f32()?);

                mesh.mesh.shader_params.data = data.read_slice(PADDED_SIZE_32, false)?;
                //mesh.mesh.shader_params.name = data.read_string_u8_0terminated()?;
                //mesh.mesh.shader_params.uk_1 = data.read_slice(PADDED_SIZE_10, false)?;
                //mesh.mesh.shader_params.uk_2 = data.read_slice(8, false)?;
                //mesh.mesh.shader_params.uk_2 = data.read_slice(PADDED_SIZE_10, false)?;

                mesh.mesh.vertices = Vec::with_capacity(vertex_count as usize);
                mesh.mesh.indices = Vec::with_capacity(index_count as usize);

                mesh.material = Material::read(data, mesh.mesh.material_type)?;

                for _ in 0..mesh.mesh.vertices().capacity() {
                    mesh.mesh.vertices.push(Vertex::read(data, self.version, *mesh.material.vertex_format(), *mesh.mesh.material_type())?);
                }

                for _ in 0..mesh.mesh.indices.capacity() {
                    mesh.mesh.indices.push(data.read_u16()?);
                }

                lod.mesh_blocks.push(mesh);
            }
        }

        Ok(())
    }

    pub fn write_v6<W: WriteBytes>(&self, buffer: &mut W) -> Result<()> {
        buffer.write_u16(self.lods.len() as u16)?;
        buffer.write_u16(self.uk_1)?;
        buffer.write_string_u8_0padded(self.skeleton_id(), PADDED_SIZE_128, true)?;

        let mut lod_headers = vec![];
        let mut lod_data = vec![];
        let mut offset_current_lod = 0;

        for lod in self.lods() {
            lod_headers.write_u32(lod.mesh_blocks.len() as u32)?;

            let mut total_vertices_size = 0;
            let mut total_indices_size = 0;

            for mesh in lod.mesh_blocks() {
                let mut mesh_data = vec![];

                mesh_data.write_f32(mesh.mesh.min_bb().x)?;
                mesh_data.write_f32(mesh.mesh.min_bb().y)?;
                mesh_data.write_f32(mesh.mesh.min_bb().z)?;

                mesh_data.write_f32(mesh.mesh.max_bb().x)?;
                mesh_data.write_f32(mesh.mesh.max_bb().y)?;
                mesh_data.write_f32(mesh.mesh.max_bb().z)?;

                mesh_data.write_all(mesh.mesh.shader_params().data())?;
                //mesh_data.write_string_u8_0terminated(mesh.mesh.shader_params().name())?;
                //mesh_data.write_all(mesh.mesh.shader_params().uk_1())?;
                //mesh_data.write_all(mesh.mesh.shader_params().uk_2())?;

                mesh.material.write(&mut mesh_data, mesh.mesh.material_type)?;

                let offset_start_vertices = mesh_data.len();
                for vertex in mesh.mesh.vertices() {
                    vertex.write(&mut mesh_data, self.version, *mesh.material.vertex_format(), *mesh.mesh.material_type())?;
                }

                total_vertices_size += mesh_data.len() - offset_start_vertices;

                let offset_start_indices = mesh_data.len();
                for index in mesh.mesh.indices() {
                    mesh_data.write_u16(*index)?;
                }

                total_indices_size += mesh_data.len() - offset_start_indices;

                // We do the header after so we can get the correct sizes for it.
                let mut mesh_header = vec![];
                mesh_header.write_u16(u16::from(mesh.mesh.material_type))?;

                mesh_header.write_u16(0)?;
                mesh_header.write_u32(24 + mesh_data.len() as u32)?;
                mesh_header.write_u32(24 + offset_start_vertices as u32)?;
                mesh_header.write_u32(mesh.mesh.vertices.len() as u32)?;
                mesh_header.write_u32(24 + offset_start_indices as u32)?;
                mesh_header.write_u32(mesh.mesh.indices.len() as u32)?;

                lod_data.append(&mut mesh_header);
                lod_data.append(&mut mesh_data);
            }

            lod_headers.write_u32(total_vertices_size as u32)?;
            lod_headers.write_u32(total_indices_size as u32)?;

            // Offset of the first mesh of this lod. We have to calculate it as such:
            // 5 items per lod header * 4 bytes per item * X num of lods + 134 (header lenght) + data until current lod.
            lod_headers.write_u32((5 * 4 * self.lods().len() as u32) + HEADER_LENGTH + offset_current_lod)?;
            offset_current_lod = lod_data.len() as u32;

            lod_headers.write_f32(lod.visibility_distance)?;
        }

        buffer.write_all(&lod_headers)?;
        buffer.write_all(&lod_data)?;

        Ok(())
    }
}