408 lines
12 KiB
C
408 lines
12 KiB
C
//=======================================================================
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// Copyright XashXT Group 2007 ©
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// r_sprite.c - render sprite models
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//=======================================================================
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#include "r_local.h"
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#include "mathlib.h"
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#include "byteorder.h"
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#include "const.h"
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/*
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=============================================================
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SPRITE MODELS
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=============================================================
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*/
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string frame_prefix;
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uint frame_type;
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uint group_num;
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uint surfaceParm;
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string sp_name;
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ref_shader_t **frames = NULL;
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/*
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====================
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Sprite model loader
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====================
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*/
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dframetype_t *R_SpriteLoadFrame( rmodel_t *mod, void *pin, mspriteframe_t **ppframe, int framenum )
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{
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dspriteframe_t *pinframe;
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mspriteframe_t *pspriteframe;
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string name, shadername;
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// build uinque frame name
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if( !sp_name[0] ) FS_FileBase( mod->name, sp_name );
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com.snprintf( name, MAX_STRING, "Sprite( %s_%s_%i%i )", sp_name, frame_prefix, framenum/10, framenum%10 );
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pinframe = (dspriteframe_t *)pin;
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SwapBlock((int *)pinframe, sizeof( dspriteframe_t ));
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// setup frame description
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pspriteframe = Mem_Alloc( mod->mempool, sizeof( mspriteframe_t ));
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pspriteframe->width = pinframe->width;
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pspriteframe->height = pinframe->height;
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pspriteframe->up = pinframe->origin[1];
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pspriteframe->left = pinframe->origin[0];
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pspriteframe->down = pinframe->origin[1] - pinframe->height;
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pspriteframe->right = pinframe->width + pinframe->origin[0];
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pspriteframe->radius = com.sqrt((pinframe->width * pinframe->width) + (pinframe->height * pinframe->height));
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pspriteframe->texture = R_FindTexture( name, (byte *)pin, pinframe->width * pinframe->height, 0, 0, 0 );
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*ppframe = pspriteframe;
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R_ShaderSetSpriteTexture( pspriteframe->texture );
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if( frame_type == SPR_SINGLE )
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{
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com.snprintf( shadername, MAX_STRING, "sprites/%s.spr/%s_%i%i )", sp_name, frame_prefix, framenum/10, framenum%10 );
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pspriteframe->shader = R_FindShader( shadername, SHADER_SPRITE, surfaceParm )->shadernum;
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frames = Mem_Realloc( mod->mempool, frames, sizeof( ref_shader_t* ) * (mod->numShaders + 1));
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frames[mod->numShaders++] = &r_shaders[pspriteframe->shader];
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}
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return (dframetype_t *)((byte *)(pinframe + 1) + pinframe->width * pinframe->height );
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}
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dframetype_t *R_SpriteLoadGroup( rmodel_t *mod, void * pin, mspriteframe_t **ppframe, int framenum )
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{
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dspritegroup_t *pingroup;
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mspritegroup_t *pspritegroup;
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dspriteinterval_t *pin_intervals;
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float *poutintervals;
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shader_t group_shader;
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int i, groupsize, numframes;
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string shadername;
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void *ptemp;
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pingroup = (dspritegroup_t *)pin;
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numframes = LittleLong( pingroup->numframes );
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groupsize = sizeof(mspritegroup_t) + (numframes - 1) * sizeof( pspritegroup->frames[0] );
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pspritegroup = Mem_Alloc( mod->mempool, groupsize );
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pspritegroup->numframes = numframes;
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*ppframe = (mspriteframe_t *)pspritegroup;
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pin_intervals = (dspriteinterval_t *)(pingroup + 1);
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poutintervals = Mem_Alloc( mod->mempool, numframes * sizeof( float ));
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pspritegroup->intervals = poutintervals;
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for( i = 0; i < numframes; i++ )
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{
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*poutintervals = LittleFloat( pin_intervals->interval );
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if( *poutintervals <= 0.0 ) *poutintervals = 1.0f; // set error value
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if( frame_type == SPR_GROUP ) R_ShaderAddSpriteIntervals( *poutintervals );
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poutintervals++;
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pin_intervals++;
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}
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ptemp = (void *)pin_intervals;
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for( i = 0; i < numframes; i++ )
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{
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ptemp = R_SpriteLoadFrame( mod, ptemp, &pspritegroup->frames[i], framenum * 10 + i );
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}
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com.snprintf( shadername, MAX_STRING, "sprites/%s.spr/%s_%i%i", sp_name, frame_prefix, group_num/10, group_num%10 );
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group_shader = R_FindShader( shadername, SHADER_SPRITE, surfaceParm )->shadernum;
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frames = Mem_Realloc( mod->mempool, frames, sizeof( ref_shader_t* ) * (mod->numShaders + 1));
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frames[mod->numShaders++] = &r_shaders[group_shader];
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// apply this shader for all frames in group
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for( i = 0; i < numframes; i++ )
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pspritegroup->frames[i]->shader = group_shader;
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group_num++;
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return (dframetype_t *)ptemp;
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}
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void R_SpriteLoadModel( rmodel_t *mod, const void *buffer )
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{
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dsprite_t *pin;
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short *numi;
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msprite_t *psprite;
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dframetype_t *pframetype;
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int i, size, numframes;
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pin = (dsprite_t *)buffer;
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i = LittleLong( pin->version );
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if( i != SPRITE_VERSION )
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{
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MsgDev( D_ERROR, "%s has wrong version number (%i should be %i)\n", mod->name, i, SPRITE_VERSION );
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return;
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}
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numframes = LittleLong( pin->numframes );
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size = sizeof (msprite_t) + (numframes - 1) * sizeof( psprite->frames );
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psprite = Mem_Alloc( mod->mempool, size );
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mod->extradata = psprite; // make link to extradata
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mod->numShaders = surfaceParm = 0; // reset frames
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psprite->type = LittleLong( pin->type );
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psprite->rendermode = LittleLong( pin->texFormat );
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psprite->numframes = numframes;
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mod->mins[0] = mod->mins[1] = -LittleLong( pin->bounds[0] ) / 2;
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mod->maxs[0] = mod->maxs[1] = LittleLong( pin->bounds[0] ) / 2;
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mod->mins[2] = -LittleLong( pin->bounds[1] ) / 2;
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mod->maxs[2] = LittleLong( pin->bounds[1] ) / 2;
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numi = (short *)(pin + 1);
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if( LittleShort( *numi ) == 256 )
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{
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byte *src = (byte *)(numi+1);
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rgbdata_t *pal;
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// install palette
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switch( psprite->rendermode )
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{
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case SPR_ADDGLOW:
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pal = FS_LoadImage( "#normal.pal", src, 768 );
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surfaceParm |= SURF_GLOW;
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break;
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case SPR_ADDITIVE:
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pal = FS_LoadImage( "#normal.pal", src, 768 );
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surfaceParm |= SURF_ADDITIVE;
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break;
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case SPR_INDEXALPHA:
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pal = FS_LoadImage( "#decal.pal", src, 768 );
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surfaceParm |= SURF_ALPHA;
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break;
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case SPR_ALPHTEST:
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pal = FS_LoadImage( "#transparent.pal", src, 768 );
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surfaceParm |= SURF_ALPHA;
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break;
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case SPR_NORMAL:
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default:
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pal = FS_LoadImage( "#normal.pal", src, 768 );
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break;
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}
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pframetype = (dframetype_t *)(src + 768);
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FS_FreeImage( pal ); // palette installed, no reason to keep this data
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}
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else
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{
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MsgDev( D_ERROR, "%s has wrong number of palette colors %i (should be 256)\n", mod->name, numi );
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return;
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}
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if( numframes < 1 )
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{
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MsgDev( D_ERROR, "%s has invalid # of frames: %d\n", mod->name, numframes );
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return;
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}
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MsgDev( D_LOAD, "%s, rendermode %d\n", mod->name, psprite->rendermode );
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mod->registration_sequence = registration_sequence;
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frames = NULL; // invalidate pointer
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sp_name[0] = 0;
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group_num = 0;
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for( i = 0; i < numframes; i++ )
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{
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frametype_t frametype = LittleLong( pframetype->type );
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psprite->frames[i].type = frametype;
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frame_type = frametype;
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switch( frametype )
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{
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case SPR_SINGLE:
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com.strncpy( frame_prefix, "one", MAX_STRING );
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pframetype = R_SpriteLoadFrame(mod, pframetype + 1, &psprite->frames[i].frameptr, i );
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break;
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case SPR_GROUP:
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com.strncpy( frame_prefix, "grp", MAX_STRING );
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pframetype = R_SpriteLoadGroup(mod, pframetype + 1, &psprite->frames[i].frameptr, i );
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break;
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case SPR_ANGLED:
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com.strncpy( frame_prefix, "ang", MAX_STRING );
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pframetype = R_SpriteLoadGroup(mod, pframetype + 1, &psprite->frames[i].frameptr, i );
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break;
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}
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if( pframetype == NULL ) break; // technically an error
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}
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mod->shaders = frames; // setup texture links
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}
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/*
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================
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R_GetSpriteFrame
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================
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*/
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mspriteframe_t *R_GetSpriteFrame( ref_entity_t *ent )
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{
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msprite_t *psprite;
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mspritegroup_t *pspritegroup;
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mspriteframe_t *pspriteframe;
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int i, numframes, frame;
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float *pintervals, fullinterval, targettime, time;
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psprite = ent->model->extradata;
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frame = ent->frame;
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if((frame >= psprite->numframes) || (frame < 0))
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{
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MsgDev( D_WARN, "R_GetSpriteFrame: no such frame %d (%s)\n", frame, ent->model->name );
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frame = 0;
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}
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if( psprite->frames[frame].type == SPR_SINGLE )
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{
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pspriteframe = psprite->frames[frame].frameptr;
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}
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else if (psprite->frames[frame].type == SPR_GROUP)
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{
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pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
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pintervals = pspritegroup->intervals;
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numframes = pspritegroup->numframes;
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fullinterval = pintervals[numframes-1];
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time = r_refdef.time;
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// when loading in Mod_LoadSpriteGroup, we guaranteed all interval values
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// are positive, so we don't have to worry about division by zero
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targettime = time - ((int)(time / fullinterval)) * fullinterval;
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for( i = 0; i < (numframes - 1); i++ )
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{
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if (pintervals[i] > targettime)
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break;
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}
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pspriteframe = pspritegroup->frames[i];
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}
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else if( psprite->frames[frame].type == SPR_ANGLED )
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{
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// e.g. doom-style sprite monsters
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int angleframe = (int)((r_refdef.viewangles[1] - ent->angles[1])/360*8 + 0.5 - 4) & 7;
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pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
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pspriteframe = pspritegroup->frames[angleframe];
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}
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return pspriteframe;
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}
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/*
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=================
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R_AddSpriteModelToList
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add spriteframe to list
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=================
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*/
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void R_AddSpriteModelToList( ref_entity_t *entity )
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{
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mspriteframe_t *frame;
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frame = R_GetSpriteFrame( entity );
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if( R_CullSphere( entity->origin, frame->radius, MAX_CLIPFLAGS ))
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return;
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// copy frame params
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m_pCurrentEntity = entity;
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entity->radius = frame->radius;
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entity->rotation = 0;
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entity->shader = &r_shaders[frame->shader];
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// add it
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R_AddMeshToList( MESH_SPRITE, NULL, entity->shader, entity, 0 );
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}
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/*
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=================
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R_DrawSpriteModel
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=================
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*/
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void R_DrawSpriteModel( void )
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{
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mspriteframe_t *frame;
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msprite_t *psprite;
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vec3_t forward, right, up;
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float angle, sr, cr, alpha;
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vec3_t point;
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ref_entity_t *e;
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int i;
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e = m_pCurrentEntity;
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frame = R_GetSpriteFrame( e );
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psprite = (msprite_t *)m_pRenderModel->extradata;
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// setup orientation
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switch( psprite->type )
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{
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case SPR_ORIENTED:
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VectorCopy( e->matrix[0], forward );
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VectorCopy( e->matrix[1], right );
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VectorCopy( e->matrix[2], up );
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VectorScale( forward, 0.01, forward ); // to avoid z-fighting
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VectorSubtract( e->origin, forward, e->origin );
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break;
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case SPR_FACING_UPRIGHT:
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VectorSet( right, e->origin[1] - r_origin[1], -(e->origin[0] - r_origin[0]), 0 );
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VectorNegate( r_forward, forward );
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VectorSet( up, 0, 0, 1 );
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VectorNormalize( right );
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break;
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case SPR_FWD_PARALLEL_UPRIGHT:
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VectorSet( right, r_forward[1], -r_forward[0], 0 );
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VectorNegate( r_forward, forward );
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VectorSet( up, 0, 0, 1 );
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break;
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case SPR_FWD_PARALLEL_ORIENTED:
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angle = e->angles[ROLL] * (M_PI*2.0f/360.0f);
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sr = com.sin( angle );
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cr = com.cos( angle );
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for( i = 0; i < 3; i++ )
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{
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forward[i] = -r_forward[i];
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right[i] = -(r_right[i] * cr + r_up[i] * sr);
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up[i] = r_right[i] * -sr + r_up[i] * cr;
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}
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break;
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case SPR_FWD_PARALLEL:
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default: // normal sprite
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VectorNegate( r_forward, forward );
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VectorNegate( r_right, right );
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VectorCopy( r_up, up );
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break;
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}
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if((m_pCurrentEntity->rendermode == kRenderGlow) || (m_pCurrentShader->surfaceParm & SURF_GLOW))
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{
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if( ri.Trace( m_pCurrentEntity->origin, vec3_origin, vec3_origin, r_refdef.vieworg ))
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{
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float dist = VectorDistance( m_pCurrentEntity->origin, r_refdef.vieworg );
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e->scale = bound( 1.0, dist * 0.005f, 10.0f );
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alpha = bound( 0, dist / 1000, 1.0f );
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e->renderamt = 255 * alpha;
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if( e->renderamt >= 255 ) return; // faded
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}
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else return; // occluded
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}
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// draw it
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RB_CheckMeshOverflow( 6, 4 );
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GL_Begin( GL_QUADS );
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GL_TexCoord2f( 0, 0 );
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VectorMA( e->origin, frame->up * e->scale, up, point );
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VectorMA( point, frame->left * e->scale, right, point );
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GL_Normal3fv( forward );
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GL_Vertex3fv( point );
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GL_TexCoord2f( 1, 0 );
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VectorMA( e->origin, frame->up * e->scale, up, point );
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VectorMA( point, frame->right * e->scale, right, point );
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GL_Normal3fv( forward );
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GL_Vertex3fv( point );
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GL_TexCoord2f( 1, 1 );
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VectorMA( e->origin, frame->down * e->scale, up, point );
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VectorMA( point, frame->right * e->scale, right, point );
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GL_Normal3fv( forward );
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GL_Vertex3fv( point );
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GL_TexCoord2f( 0, 1 );
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VectorMA( e->origin, frame->down * e->scale, up, point );
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VectorMA( point, frame->left * e->scale, right, point );
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GL_Normal3fv( forward );
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GL_Vertex3fv( point );
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GL_End();
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} |