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560 lines
11 KiB
560 lines
11 KiB
/* |
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smd.c - Studio Model Data format writer |
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Copyright (C) 2020 Andrey Akhmichin |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "const.h" |
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#include "com_model.h" |
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#include "xash3d_mathlib.h" |
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#include "crtlib.h" |
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#include "studio.h" |
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#include "mdldec.h" |
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#include "smd.h" |
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static matrix3x4 *bonetransform; |
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/* |
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============ |
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CreateBoneTransformMatrices |
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============ |
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*/ |
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static qboolean CreateBoneTransformMatrices( void ) |
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{ |
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bonetransform = calloc( model_hdr->numbones, sizeof( matrix3x4 ) ); |
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if( !bonetransform ) |
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{ |
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fputs( "ERROR: Couldn't allocate memory for bone transformation matrices!\n", stderr ); |
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return false; |
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} |
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return true; |
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} |
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/* |
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============ |
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FillBoneTransformMatrices |
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============ |
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*/ |
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static void FillBoneTransformMatrices( void ) |
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{ |
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int i; |
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mstudiobone_t *bone; |
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matrix3x4 bonematrix; |
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vec4_t q; |
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for( i = 0; i < model_hdr->numbones; i++ ) |
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{ |
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bone = (mstudiobone_t *)( (byte *)model_hdr + model_hdr->boneindex ) + i; |
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AngleQuaternion( &bone->value[3], q, true ); |
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Matrix3x4_FromOriginQuat( bonematrix, q, bone->value ); |
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if( bone->parent == -1 ) |
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{ |
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Matrix3x4_Copy( bonetransform[i], bonematrix ); |
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continue; |
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} |
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Matrix3x4_ConcatTransforms( bonetransform[i], bonetransform[bone->parent], bonematrix ); |
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} |
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} |
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/* |
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============ |
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RemoveBoneTransformMatrices |
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============ |
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*/ |
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static void RemoveBoneTransformMatrices( void ) |
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{ |
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free( bonetransform ); |
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} |
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/* |
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============ |
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ClipRotations |
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============ |
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*/ |
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static void ClipRotations( vec3_t angle ) |
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{ |
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int i; |
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for( i = 0; i < 3; i++ ) |
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{ |
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while( angle[i] >= M_PI_F ) |
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angle[i] -= M_PI2_F; |
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while( angle[i] < -M_PI_F ) |
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angle[i] += M_PI2_F; |
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} |
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} |
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/* |
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============ |
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ProperBoneRotationZ |
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============ |
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*/ |
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static void ProperBoneRotationZ( vec_t *motion, float angle ) |
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{ |
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float c, s, x, y; |
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float rot; |
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rot = DEG2RAD( angle ); |
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s = sin( rot ); |
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c = cos( rot ); |
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x = motion[0]; |
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y = motion[1]; |
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motion[0] = c * x - s * y; |
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motion[1] = s * x + c * y; |
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motion[5] += rot; |
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} |
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/* |
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============ |
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CalcBonePosition |
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============ |
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*/ |
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static void CalcBonePosition( mstudioanim_t *anim, mstudiobone_t *bone, vec_t *motion, int frame ) |
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{ |
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int i, j; |
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float value; |
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mstudioanimvalue_t *animvalue; |
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for( i = 0; i < 6; i++ ) |
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{ |
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motion[i] = bone->value[i]; |
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if( !anim->offset[i] ) |
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continue; |
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animvalue = (mstudioanimvalue_t *)( (byte *)anim + anim->offset[i] ); |
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j = frame; |
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while( animvalue->num.total <= j ) |
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{ |
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j -= animvalue->num.total; |
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animvalue += animvalue->num.valid + 1; |
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} |
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if( animvalue->num.valid > j ) |
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value = animvalue[j + 1].value; |
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else |
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value = animvalue[animvalue->num.valid].value; |
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motion[i] += value * bone->scale[i]; |
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} |
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} |
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/* |
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============ |
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WriteNodes |
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============ |
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*/ |
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static void WriteNodes( FILE *fp ) |
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{ |
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int i; |
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mstudiobone_t *bone; |
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fputs( "nodes\n", fp ); |
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for( i = 0; i < model_hdr->numbones; i++ ) |
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{ |
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bone = (mstudiobone_t *)( (byte *)model_hdr + model_hdr->boneindex ) + i; |
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fprintf( fp, "%3i \"%s\" %i\n", i, bone->name, bone->parent ); |
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} |
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fputs( "end\n", fp ); |
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} |
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/* |
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============ |
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WriteSkeleton |
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============ |
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*/ |
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static void WriteSkeleton( FILE *fp ) |
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{ |
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int i, j; |
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mstudiobone_t *bone; |
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fputs( "skeleton\n", fp ); |
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fputs( "time 0\n", fp ); |
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for( i = 0; i < model_hdr->numbones; i++ ) |
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{ |
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bone = (mstudiobone_t *)( (byte *)model_hdr + model_hdr->boneindex ) + i; |
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fprintf( fp, "%3i", i ); |
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for( j = 0; j < 6; j++ ) |
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fprintf( fp, " %f", bone->value[j] ); |
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fputs( "\n", fp ); |
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} |
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fputs( "end\n", fp ); |
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} |
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/* |
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============ |
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WriteTriangleInfo |
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============ |
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*/ |
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static void WriteTriangleInfo( FILE *fp, mstudiomodel_t *model, mstudiotexture_t *texture, mstudiotrivert_t **triverts, qboolean isevenstrip ) |
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{ |
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int i, indices[3]; |
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int vert_index; |
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int norm_index; |
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int bone_index; |
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float s, t, u, v; |
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byte *vertbone; |
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vec3_t *studioverts; |
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vec3_t *studionorms; |
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vec3_t vert, norm; |
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if( isevenstrip ) |
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{ |
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indices[0] = 1; |
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indices[1] = 2; |
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indices[2] = 0; |
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} |
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else |
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{ |
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indices[0] = 0; |
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indices[1] = 1; |
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indices[2] = 2; |
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} |
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vertbone = ( (byte *)model_hdr + model->vertinfoindex ); |
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studioverts = (vec3_t *)( (byte *)model_hdr + model->vertindex ); |
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studionorms = (vec3_t *)( (byte *)model_hdr + model->normindex ); |
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s = 1.0f / texture->width; |
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t = 1.0f / texture->height; |
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fprintf( fp, "%s\n", texture->name ); |
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for( i = 0; i < 3; i++ ) |
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{ |
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vert_index = triverts[indices[i]]->vertindex; |
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norm_index = triverts[indices[i]]->normindex; |
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bone_index = vertbone[vert_index]; |
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Matrix3x4_VectorTransform( bonetransform[bone_index], studioverts[vert_index], vert ); |
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Matrix3x4_VectorRotate( bonetransform[bone_index], studionorms[norm_index], norm ); |
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VectorNormalize( norm ); |
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if( texture->flags & STUDIO_NF_UV_COORDS ) |
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{ |
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u = HalfToFloat( triverts[indices[i]]->s ); |
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v = -HalfToFloat( triverts[indices[i]]->t ); |
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} |
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else |
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{ |
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u = ( triverts[indices[i]]->s + 1.0f ) * s; |
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v = 1.0f - triverts[indices[i]]->t * t; |
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} |
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fprintf( fp, "%3i %f %f %f %f %f %f %f %f\n", |
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bone_index, |
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vert[0], vert[1], vert[2], |
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norm[0], norm[1], norm[2], |
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u, v ); |
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} |
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} |
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/* |
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============ |
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WriteTriangles |
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============ |
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*/ |
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static void WriteTriangles( FILE *fp, mstudiomodel_t *model ) |
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{ |
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int i, j, k; |
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mstudiomesh_t *mesh; |
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mstudiotexture_t *texture; |
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mstudiotrivert_t *triverts[3]; |
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short *tricmds; |
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fputs( "triangles\n", fp ); |
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for( i = 0; i < model->nummesh; i++ ) |
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{ |
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mesh = (mstudiomesh_t *)( (byte *)model_hdr + model->meshindex ) + i; |
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tricmds = (short *)( (byte *)model_hdr + mesh->triindex ); |
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texture = (mstudiotexture_t *)( (byte *)texture_hdr + texture_hdr->textureindex ) + mesh->skinref; |
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while( ( j = *( tricmds++ ) ) ) |
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{ |
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if( j >= 0 ) |
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{ |
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// triangle strip |
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for( k = 0; j > 0; j--, k++, tricmds += 4 ) |
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{ |
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if( k == 0 ) |
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{ |
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triverts[0] = (mstudiotrivert_t *)tricmds; |
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} |
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else if( k == 1 ) |
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{ |
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triverts[2] = (mstudiotrivert_t *)tricmds; |
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} |
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else if( k == 2 ) |
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{ |
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triverts[1] = (mstudiotrivert_t *)tricmds; |
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WriteTriangleInfo( fp, model, texture, triverts, true ); |
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} |
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else if( k % 2 ) |
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{ |
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triverts[0] = triverts[2]; |
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triverts[2] = (mstudiotrivert_t *)tricmds; |
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WriteTriangleInfo( fp, model, texture, triverts, false ); |
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} |
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else |
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{ |
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triverts[0] = triverts[1]; |
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triverts[1] = (mstudiotrivert_t *)tricmds; |
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WriteTriangleInfo( fp, model, texture, triverts, true ); |
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} |
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} |
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} |
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else |
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{ |
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// triangle fan |
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j = abs( j ); |
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for( k = 0; j > 0; j--, k++, tricmds += 4 ) |
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{ |
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if( k == 0 ) |
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{ |
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triverts[0] = (mstudiotrivert_t *)tricmds; |
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} |
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else if( k == 1 ) |
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{ |
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triverts[2] = (mstudiotrivert_t *)tricmds; |
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} |
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else if( k == 2 ) |
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{ |
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triverts[1] = (mstudiotrivert_t *)tricmds; |
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WriteTriangleInfo( fp, model, texture, triverts, false ); |
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} |
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else |
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{ |
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triverts[2] = triverts[1]; |
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triverts[1] = (mstudiotrivert_t *)tricmds; |
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WriteTriangleInfo( fp, model, texture, triverts, false ); |
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} |
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} |
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} |
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} |
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} |
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fputs( "end\n", fp ); |
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} |
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/* |
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============ |
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WriteFrameInfo |
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============ |
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*/ |
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static void WriteFrameInfo( FILE *fp, mstudioanim_t *anim, mstudioseqdesc_t *seqdesc, int frame ) |
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{ |
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int i, j; |
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float scale; |
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vec_t motion[6]; // x, y, z, xr, yr, zr |
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mstudiobone_t *bone; |
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fprintf( fp, "time %i\n", frame ); |
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for( i = 0; i < model_hdr->numbones; i++, anim++ ) |
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{ |
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bone = (mstudiobone_t *)( (byte *)model_hdr + model_hdr->boneindex ) + i; |
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CalcBonePosition( anim, bone, motion, frame ); |
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if( bone->parent == -1 ) |
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{ |
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scale = frame / (float)( seqdesc->numframes - 1 ); |
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VectorMA( motion, scale, seqdesc->linearmovement, motion ); |
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ProperBoneRotationZ( motion, 270.0f ); |
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} |
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ClipRotations( &motion[3] ); |
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fprintf( fp, "%3i ", i ); |
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for( j = 0; j < 6; j++ ) |
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fprintf( fp, " %f", motion[j] ); |
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fputs( "\n", fp ); |
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} |
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} |
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/* |
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============ |
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WriteAnimations |
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============ |
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*/ |
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static void WriteAnimations( FILE *fp, mstudioseqdesc_t *seqdesc, int blend ) |
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{ |
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int i; |
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mstudioanim_t *anim; |
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fputs( "skeleton\n", fp ); |
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anim = (mstudioanim_t *)( (byte *)anim_hdr[seqdesc->seqgroup] + seqdesc->animindex ); |
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anim += blend * model_hdr->numbones; |
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for( i = 0; i < seqdesc->numframes; i++ ) |
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WriteFrameInfo( fp, anim, seqdesc, i ); |
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fputs( "end\n", fp ); |
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} |
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/* |
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============ |
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WriteReferences |
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============ |
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*/ |
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static void WriteReferences( void ) |
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{ |
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int i, j; |
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int len; |
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FILE *fp; |
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mstudiomodel_t *model; |
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mstudiobodyparts_t *bodypart; |
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char name[64]; |
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char filename[MAX_SYSPATH]; |
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if( !CreateBoneTransformMatrices() ) |
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return; |
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FillBoneTransformMatrices(); |
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for( i = 0; i < model_hdr->numbodyparts; i++ ) |
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{ |
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bodypart = (mstudiobodyparts_t *)( (byte *)model_hdr + model_hdr->bodypartindex ) + i; |
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for( j = 0; j < bodypart->nummodels; j++ ) |
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{ |
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model = (mstudiomodel_t *)( (byte *)model_hdr + bodypart->modelindex ) + j; |
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if( !Q_strncmp( model->name, "blank", 5 ) ) |
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continue; |
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COM_FileBase( model->name, name, sizeof( name )); |
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len = Q_snprintf( filename, MAX_SYSPATH, "%s%s.smd", destdir, name ); |
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if( len == -1 ) |
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{ |
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fprintf( stderr, "ERROR: Destination path is too long. Can't write %s.smd\n", name ); |
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RemoveBoneTransformMatrices(); |
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return; |
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} |
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fp = fopen( filename, "w" ); |
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if( !fp ) |
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{ |
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fprintf( stderr, "ERROR: Can't write %s\n", filename ); |
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RemoveBoneTransformMatrices(); |
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return; |
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} |
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fputs( "version 1\n", fp ); |
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WriteNodes( fp ); |
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WriteSkeleton( fp ); |
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WriteTriangles( fp, model ); |
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fclose( fp ); |
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printf( "Reference: %s\n", filename ); |
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} |
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} |
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RemoveBoneTransformMatrices(); |
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} |
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/* |
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============ |
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WriteSequences |
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============ |
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*/ |
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static void WriteSequences( void ) |
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{ |
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int i, j; |
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int len; |
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FILE *fp; |
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char filename[MAX_SYSPATH]; |
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mstudioseqdesc_t *seqdesc; |
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for( i = 0; i < model_hdr->numseq; i++ ) |
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{ |
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seqdesc = (mstudioseqdesc_t *)( (byte *)model_hdr + model_hdr->seqindex ) + i; |
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for( j = 0; j < seqdesc->numblends; j++ ) |
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{ |
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if( seqdesc->numblends == 1 ) |
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len = Q_snprintf( filename, MAX_SYSPATH, "%s%s.smd", destdir, seqdesc->label ); |
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else |
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len = Q_snprintf( filename, MAX_SYSPATH, "%s%s_blend%02i.smd", destdir, seqdesc->label, j + 1 ); |
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if( len == -1 ) |
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{ |
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fprintf( stderr, "ERROR: Destination path is too long. Can't write %s.smd\n", seqdesc->label ); |
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return; |
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} |
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fp = fopen( filename, "w" ); |
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if( !fp ) |
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{ |
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fprintf( stderr, "ERROR: Can't write %s\n", filename ); |
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return; |
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} |
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fputs( "version 1\n", fp ); |
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WriteNodes( fp ); |
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WriteAnimations( fp, seqdesc, j ); |
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fclose( fp ); |
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printf( "Sequence: %s\n", filename ); |
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} |
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} |
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} |
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void WriteSMD( void ) |
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{ |
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WriteReferences(); |
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WriteSequences(); |
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} |
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