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// -*- C++ -*-
/*
* Simple MultimEdia LiTerator(SMELT)
* by Chris Xiong 2015
* Animation implementation
*
* WARNING: This library is in development and interfaces would be very
* unstable.
* This library is developed for the BLR series games.
*/
#include "smanim.hpp"
#include <cstdio>
#include <cstring>
#define METAWARN(s) printf("metafile warning at line %d: %s\n",lc,s)
SMELT* smAnmFile::sm=NULL;
void smAnmFile::parseMeta(const char* meta,DWORD size)
{
const char* cp=meta;
bool inAnim=false;
int lc=0;
smAnmInfo cur;
while(cp-meta<=size)
{
int cc=0;
for(;*(cp+cc)!='\n'&&(cp+cc-meta<=size);++cc);
char line[65];
strncpy(line,cp,cc+1);line[cc]='\0';
cp+=cc+1;++lc;
if(inAnim&&line[0]!='F'&&line[0]!='E'){METAWARN("Only instruction F is allowed between A and E.");continue;}
if(line[0]=='E')
{
if(!inAnim)METAWARN("No animation to end...");
else{inAnim=false;am[std::string(cur.name)]=cur;}
}
if(line[0]=='A')
{
if(inAnim)METAWARN("Already in an animation definition...");
else
{
inAnim=true;
int cn=0;while(line[cn+2]!=',')++cn;
cur.name=new char[cn];strncpy(cur.name,line+2,cn);
cur.name[cn-1]='\0';cur.mode=0;cur.fc=0;
if(!strcmp(line+3+cn,"loop"))cur.mode=1;
if(!strcmp(line+3+cn,"bidi"))cur.mode=2;
}
}
if(line[0]=='F')
{
if(!inAnim)METAWARN("Cannot define frames outside animation...");
else
{
int cn=0;while(line[cn+2]!=',')++cn;
cur.frames[cur.fc].path=new char[cn];
cur.frames[cur.fc].name=NULL;
strncpy(cur.frames[cur.fc].path,line+2,cn);
cur.frames[cur.fc].path[cn-1]='\0';
sscanf(line+3+cn,"%f,%f,%f,%f,%d",&cur.frames[cur.fc].rect.x,
&cur.frames[cur.fc].rect.y,&cur.frames[cur.fc].rect.w,&cur.frames[cur.fc].rect.h,
&cur.framedur[cur.fc]);
if(xm.find(std::string(cur.frames[cur.fc].path))!=xm.end())
cur.frames[cur.fc].tex=xm[std::string(cur.frames[cur.fc].path)];
else
{
char *texct=anm.getFilePtr(cur.frames[cur.fc].path);
DWORD texsz=anm.getFileSize(cur.frames[cur.fc].path);
cur.frames[cur.fc].tex=xm[std::string(cur.frames[cur.fc].path)]
=sm->smTextureLoadFromMemory(texct,texsz);
anm.releaseFilePtr(cur.frames[cur.fc].path);
}
++cur.fc;
}
}
if(line[0]=='S')
{
smTexInfo t;
int cn=0;while(line[cn+2]!=',')++cn;
t.name=new char[cn+1];strncpy(t.name,line+2,cn+1);
t.name[cn]='\0';
int cn2=0;while(line[cn+3+cn2]!=',')++cn2;
t.path=new char[cn2+1];strncpy(t.path,line+3+cn,cn2+1);
t.path[cn2]='\0';
sscanf(line+4+cn+cn2,"%f,%f,%f,%f",&t.rect.x,&t.rect.y,&t.rect.w,&t.rect.h);
if(xm.find(std::string(t.path))!=xm.end())
t.tex=xm[std::string(t.path)];
else
{
char *texct=anm.getFilePtr(t.path);
DWORD texsz=anm.getFileSize(t.path);
t.tex=xm[std::string(t.path)]
=sm->smTextureLoadFromMemory(texct,texsz);
anm.releaseFilePtr(t.path);
}
tm[std::string(t.name)]=t;
}
if(line[0]=='I')
{
char* mptr=anm.getFilePtr(line+2);
DWORD msez=anm.getFileSize(line+2);
parseMeta(mptr,msez);
anm.releaseFilePtr(line+2);
}
}
}
bool smAnmFile::loadAnmFromMemory(const char* ptr,DWORD size)
{
sm=smGetInterface(SMELT_APILEVEL);
anm.openDtpFromMemory(ptr,size);
xm.clear();tm.clear();am.clear();
char* mptr=anm.getFilePtr("content.meta");
DWORD msez=anm.getFileSize("content.meta");
parseMeta(mptr,msez);
anm.releaseFilePtr("content.meta");
return true;
}
void smAnmFile::close()
{
anm.closeDtp();
for(std::map<std::string,smTexInfo>::iterator i=tm.begin();i!=tm.end();++i)
{delete i->second.name;delete i->second.path;}
tm.clear();
for(std::map<std::string,smAnmInfo>::iterator i=am.begin();i!=am.end();++i)
{
delete i->second.name;
for(int j=0;j<i->second.fc;++j)
delete i->second.frames[j].path;
}
am.clear();
for(std::map<std::string,SMTEX>::iterator i=xm.begin();i!=xm.end();++i)
sm->smTextureFree(i->second);
xm.clear();
sm->smRelease();
}
smTexInfo* smAnmFile::getTextureInfo(const char* name)
{return &tm.at(name);}
smAnmInfo* smAnmFile::getAnimationInfo(const char* name)
{return &am.at(name);}
smAnimation2D::smAnimation2D(smAnmInfo a):smEntity2D(a.frames[0].tex,a.frames[0].rect)
{
ai=a;cf=mf=r=0;
for(int i=0;i<ai.fc;++i)mf+=ai.framedur[i];
}
void smAnimation2D::updateAnim(int f)
{
if(ai.mode==0){cf+=f;if(cf>mf)cf=mf;}
if(ai.mode==1){cf+=f;if(cf>mf)cf-=mf;}
if(ai.mode==2)
{
if(r){cf-=f;if(cf<0)r=0,cf=-cf;}
else{cf+=f;if(cf>mf)r=1,cf=2*mf-cf;}
}
int l=0,r=ai.framedur[0],ff=0;
for(int i=0;i<ai.fc;++i)
{
if(cf>l&&cf<=r){ff=i;break;}
l+=ai.framedur[i];r+=ai.framedur[i+1];
}
setTexture(ai.frames[ff].tex);
setTextureRectv(ai.frames[ff].rect);
}
void smAnimation2D::resetAnim()
{
cf=mf=r=0;
setTexture(ai.frames[0].tex);
setTextureRectv(ai.frames[0].rect);
}
smAnimation3D::smAnimation3D(smAnmInfo a):smEntity3D(a.frames[0].tex,a.frames[0].rect)
{
ai=a;cf=mf=r=0;
for(int i=0;i<ai.fc;++i)mf+=ai.framedur[i];
}
void smAnimation3D::updateAnim(int f)
{
if(ai.mode==0){cf+=f;if(cf>mf)cf=mf;}
if(ai.mode==1){cf+=f;if(cf>mf)cf-=mf;}
if(ai.mode==2)
{
if(r){cf-=f;if(cf<0)r=0,cf=-cf;}
else{cf+=f;if(cf>mf)r=1,cf=2*mf-cf;}
}
int l=0,r=ai.framedur[0],ff=0;
for(int i=0;i<ai.fc;++i)
{
if(cf>l&&cf<=r){ff=i;break;}
l+=ai.framedur[i];r+=ai.framedur[i+1];
}
setTexture(ai.frames[ff].tex);
setTextureRectv(ai.frames[ff].rect);
}
void smAnimation3D::resetAnim()
{
cf=mf=r=0;
setTexture(ai.frames[0].tex);
setTextureRectv(ai.frames[0].rect);
}
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