static int
NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
int dest_y;
if (data->is_sub) {
dest_y = dstrect->y;
} else {
dest_y = dstrect->y-SCREEN_HEIGHT;
}
if (texture->w == dstrect->w && texture->h == dstrect->h) {
/* No scaling */
glSprite(dstrect->x, dest_y, GL_FLIP_NONE, txdat->image);
} else {
/* Convert the scaling proportion into a 20.12 value. */
s32 scale_w = divf32(dstrect->w << 12, texture->w << 12);
s32 scale_h = divf32(dstrect->h << 12, texture->h << 12);
glSpriteScaleXY(dstrect->x, dest_y, scale_w, scale_h, GL_FLIP_NONE, txdat->image);
}
return 0;
}
void Quaternion_normalize(Quaternion *quaternion) {
int32 magnitude;
magnitude = sqrtf32(mulf32(quaternion->x, quaternion->x) +
mulf32(quaternion->y, quaternion->y) +
mulf32(quaternion->z, quaternion->z) +
mulf32(quaternion->w, quaternion->w));
quaternion->x = divf32(quaternion->x, magnitude);
quaternion->y = divf32(quaternion->y, magnitude);
quaternion->z = divf32(quaternion->z, magnitude);
quaternion->w = divf32(quaternion->w, magnitude);
}
void Bar::setValue(unsigned int val)
{
hidden = val <= 0;
position.first = initX + (val >> 2);
sx = divf32(1 << 12, val << 9);
sy = 1 << 8;
update();
}
vect3D intersectSegmentPlane(plane_struct* pl, vect3D o, vect3D v, int32 d)
{
if(!pl)return o;
vect3D n=vect(pl->A,pl->B,pl->C);
int32 p1=dotProduct(v,n);
vect3D p=pl->point;
int32 p2=dotProduct(vectDifference(p,o),n);
int32 k=divf32(p2,p1);
return addVect(o,vectMult(v,k));
}
bool collideLinePlane(vect3D p, vect3D n, vect3D o, vect3D v, vect3D* ip)
{
int32 p1=dotProduct(v,n);
if(!equals(p1,0))
{
int32 p2=dotProduct(vectDifference(p,o),n);
int32 k=divf32(p2,p1);
if(ip)*ip=addVect(o,vectMult(v,k));
return true;
}
return false;
}
//---------------------------------------------------------------------------------
// Draws a 3x3 side of the rubiks cube. as with DrawTile, assumes that all rotation
// has already been performed.
//---------------------------------------------------------------------------------
void RubiksCube::DrawSide(RubikSide side, int sideNum, int32 x, int32 y, int32 z, int32 size, bool picking) {
//---------------------------------------------------------------------------------
int color; // generate an int to signify tile colour (see enum RC_Color)
glBegin(GL_QUADS); //start drawin squares
for(int i=0; i<3; i++)
{
for(int j=0; j<3; j++)
{
color = side.tile[i][j].color; //get this tile's colour
if(picking) startCheck(); // if picking...
DrawTile( color,
x + mulf32(inttof32(i),divf32(size,inttof32(3))),
y + mulf32(inttof32(j),divf32(size,inttof32(3))),
z,
divf32(size,inttof32(3)),
picking); // draw the tile at (i,j)
if(picking) endCheck(sideNum, i, j); // if picking...
}
}
glEnd(); // stop drawin squares
}
vect3D projectPoint(camera_struct* c, vect3D p)
{
if(!c)c=&playerCamera;
vect3D v;
int32* m=c->viewMatrix;
v.x=mulf32(p.x,m[0])+mulf32(p.y,m[4])+mulf32(p.z,m[8])+m[12];
v.y=mulf32(p.x,m[1])+mulf32(p.y,m[5])+mulf32(p.z,m[9])+m[13];
// v.z=mulf32(p.x,m[2])+mulf32(p.y,m[6])+mulf32(p.z,m[10])+m[14];
int32 w=mulf32(p.x,m[3])+mulf32(p.y,m[7])+mulf32(p.z,m[11])+m[15];
// GBATEK
// screen_x = (xx+ww)*viewport_width / (2*ww) + viewport_x1
// screen_y = (yy+ww)*viewport_height / (2*ww) + viewport_y1
v.x=divf32(v.x+(w),(w)*2)*128/2048;
v.y=192-divf32(v.y+(w),(w)*2)*96/2048;
v.z=0;
// v.z=divf32(v.z+(w),(w)*2);
return v;
}
bool collideLineRectangle(rectangle_struct* rec, vect3D o, vect3D v, int32 d, int32* kk, vect3D* ip)
{
if(!rec)return false;
vect3D n=vect(abs(rec->normal.x),abs(rec->normal.y),abs(rec->normal.z));
int32 p1=dotProduct(v,n);
if(!equals(p1,0))
{
vect3D p=convertVect(rec->position); //CHECK lightmap generation ?
vect3D s=vect(rec->size.x*TILESIZE*2,rec->size.y*HEIGHTUNIT,rec->size.z*TILESIZE*2);
int32 p2=dotProduct(vectDifference(p,o),n);
int32 k=divf32(p2,p1);
s8 sign=((s.x>0)^(s.y<0)^(s.z>0)^(p1<0))?(-1):(1);
if(kk)
{
*kk=k+sign;
}
if(k<0 || k>d){return false;}
vect3D i=addVect(o,vectMult(v,k));
if(ip)*ip=i;
i=vectDifference(i,p);
bool r=true;
if(s.x)
{
if(s.x>0)r=r&&i.x<s.x&&i.x>=0;
else r=r&&i.x>s.x&&i.x<=0;
}
if(s.y)
{
if(s.y>0)r=r&&i.y<s.y&&i.y>=0;
else r=r&&i.y>s.y&&i.y<=0;
}
if(s.z)
{
if(s.z>0)r=r&&i.z<s.z&&i.z>=0;
else r=r&&i.z>s.z&&i.z<=0;
}
return r;
}
return false;
}
//---------------------------------------------------------------------------------
// Draw a single tile of the rubik's cube. assumes all necessary rotation has
// been performed already.
//---------------------------------------------------------------------------------
void RubiksCube::DrawTile(int color, int32 x, int32 y, int32 z, int32 size, bool picking)
{
int16 blackbit = f32tov16(divf32(size, inttof32(20)));
int16 vx, vy, vz, vsize;
vx = f32tov16(x);
vy = f32tov16(y);
vz = f32tov16(z);
vsize = f32tov16(size);
if(!picking) SetRCColor(color); //if we're not picking, then we need the right colour
// Draw the coloured part of the tile (sans black bits):
glVertex3v16(vx + blackbit, vy + blackbit, vz);
glVertex3v16(vx + vsize - blackbit, vy + blackbit, vz);
glVertex3v16(vx + vsize - blackbit, vy + vsize - blackbit, vz);
glVertex3v16(vx + blackbit, vy + vsize - blackbit, vz);
if(!picking) //if we're not picking, better draw in the black bits too
{
glColor3f(0,0,0);
//top
glVertex3v16(vx, vy, vz + blackbit);
glVertex3v16(vx + vsize, vy, vz + blackbit);
glVertex3v16(vx + vsize - blackbit, vy + blackbit, vz);
glVertex3v16(vx + blackbit, vy + blackbit, vz);
//right
glVertex3v16(vx + vsize - blackbit, vy + blackbit, vz);
glVertex3v16(vx + vsize, vy, vz + blackbit);
glVertex3v16(vx + vsize, vy + vsize, vz + blackbit);
glVertex3v16(vx + vsize - blackbit, vy + vsize - blackbit, vz);
//bottom
glVertex3v16(vx + blackbit, vy + vsize - blackbit, vz);
glVertex3v16(vx + vsize - blackbit, vy + vsize - blackbit, vz);
glVertex3v16(vx + vsize, vy + vsize, vz + blackbit);
glVertex3v16(vx, vy + vsize, vz + blackbit);
//left
glVertex3v16(vx, vy, vz + blackbit);
glVertex3v16(vx + blackbit, vy + blackbit, vz);
glVertex3v16(vx + blackbit, vy + vsize - blackbit, vz);
glVertex3v16(vx, vy + vsize, vz + blackbit);
}
}
bool collideLineConvertedRectangle(vect3D n, vect3D p, vect3D s, vect3D o, vect3D v, int32 d, int32* kk, vect3D* ip)
{
int32 p1=dotProduct(v,n);
if(!equals(p1,0))
{
int32 p2=dotProduct(vectDifference(p,o),n);
int32 k=divf32(p2,p1);
s8 sign=((s.x>0)^(s.y<0)^(s.z>0)^(p1<0))?(-1):(1);
if(kk)
{
*kk=k+sign;
}
if(k<0 || k>d){return false;}
vect3D i=addVect(o,vectMult(v,k));
if(ip)*ip=i;
i=vectDifference(i,p);
NOGBA("I %d %d %d",i.x,i.y,i.z);
NOGBA("S %d %d %d",s.x,s.y,s.z);
bool r=true;
if(s.x)
{
if(s.x>0)r=r&&i.x<s.x&&i.x>=0;
else r=r&&i.x>s.x&&i.x<=0;
}
if(s.y)
{
if(s.y>0)r=r&&i.y<s.y&&i.y>=0;
else r=r&&i.y>s.y&&i.y<=0;
}
if(s.z)
{
if(s.z>0)r=r&&i.z<s.z&&i.z>=0;
else r=r&&i.z>s.z&&i.z<=0;
}
return r;
}
return false;
}
void RubiksCube::Draw(touchPosition touchXY)
{
int viewport[]={0,0,255,191}; // used later for gluPickMatrix()
int16 vx, vy, vz, vsize;
vx = f32tov16(Position.X);
vy = f32tov16(Position.Y);
vz = f32tov16(Position.Z);
vsize = f32tov16(Size);
glPushMatrix();
{
glRotateY(90);
glRotateZ(180);
if(Twisting||AutoTwisting)
{
int ax=0;
// Rotate so we draw the cube the right way round
while(ax<Twist.axis)
{
glRotateX(90);
glRotateZ(90);
ax++;
}
if(Twist.position==0 || Twist.position==3) glRotateZ(Twist.rotation);
DrawSide(Twist.left.side,Twist.axis,Position.X,Position.Y,Position.Z,Size,false);
glBegin(GL_QUADS);
glColor3f(0,0,0);
glVertex3v16(vx + vsize, vy, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx, vy, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx, vy + vsize, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx + vsize, vy + vsize, vz + f32tov16(divf32(Size,inttof32(3))));
glEnd();
if(Twist.position==0 || Twist.position==3) glRotateZ(-Twist.rotation);
glRotateY(180);
if(Twist.position==2 || Twist.position==3) glRotateZ(-Twist.rotation);
DrawSide(Twist.right.side,Twist.axis+3,Position.X,Position.Y,Position.Z,Size,false);
glBegin(GL_QUADS);
glColor3f(0,0,0);
glVertex3v16(vx + vsize, vy, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx, vy, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx, vy + vsize, vz + f32tov16(divf32(Size,inttof32(3))));
glVertex3v16(vx + vsize, vy + vsize, vz + f32tov16(divf32(Size,inttof32(3))));
glEnd();
if(Twist.position==2 || Twist.position==3) glRotateZ(Twist.rotation);
glRotateY(90);
glRotateX(-90);
if(Twist.position==1 || Twist.position==3) glRotateX(Twist.rotation);
glBegin(GL_QUADS);
glColor3f(0,0,0);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3))), vy, vz);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3))), vy + vsize, vz);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3))), vy + vsize, vz + vsize);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3))), vy, vz + vsize);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3)))*2, vy, vz);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3)))*2, vy, vz + vsize);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3)))*2, vy + vsize, vz + vsize);
glVertex3v16(vx + f32tov16(divf32(Size,inttof32(3)))*2, vy + vsize, vz);
glEnd();
if(Twist.position==1 || Twist.position==3) glRotateX(-Twist.rotation);
for(int i=0;i<4;i++)
{
if(Twist.position==0) glRotateX(Twist.rotation);
DrawLine(Twist.left.line[i],Position.X,Position.Y,Position.Z,Size/3);
if(Twist.position==0) glRotateX(-Twist.rotation);
if(Twist.position==1) glRotateX(Twist.rotation);
DrawLine(Twist.middle.line[i],Position.X+(Size/3),Position.Y,Position.Z,Size/3);
if(Twist.position==1) glRotateX(-Twist.rotation);
if(Twist.position==2) glRotateX(Twist.rotation);
DrawLine(Twist.right.line[i],Position.X+(Size/3*2),Position.Y,Position.Z,Size/3);
if(Twist.position==2) glRotateX(-Twist.rotation);
glRotateX(90);
}
}else{
for(int i=0;i<3;i++)
{
DrawSide(Side[i],i,Position.X,Position.Y,Position.Z,Size, false);
glRotateY(180);
DrawSide(Side[i+3],i+3,Position.X,Position.Y,Position.Z,Size, false);
glRotateX(90);
glRotateZ(-90);
}
}
}
glPopMatrix(1);
if(Picking)
{
glPushMatrix();
for(int i=0;i<3;i++)
clicked[i]=0;
closeW = 0x7FFFFFFF; //reset the distance
//set the viewport to just off-screen, this hides all rendering that will be done during picking
glViewport(0,192,0,192);
// setup the projection matrix for picking
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPickMatrix((touchXY.px),(191-touchXY.py),4,4,viewport); // render only what is below the cursor
gluPerspective(70, 256.0 / 192.0, 0.1, 20); // this must be the same as the original perspective matrix
glMatrixMode(GL_MODELVIEW); // switch back to modifying the modelview matrix for drawing
{
glRotateY(90);
glRotateZ(180);
for(int i=0;i<3;i++)
{
DrawSide(Side[i],i,Position.X,Position.Y,Position.Z,Size, true);
glRotateY(180);
DrawSide(Side[i+3],i+3,Position.X,Position.Y,Position.Z,Size, true);
glRotateX(90);
glRotateZ(-90);
}
}
glViewport(0,0,255,191);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, 256.0 / 192.0, 0.1, 20);
glMatrixMode(GL_MODELVIEW);
if(closeW<0x7FFFFFFF)
{
if(Painting)
{
if(Side[clicked[0]].tile[clicked[1]][clicked[2]].color!=paintColour)
{
if(undoQueue.numEntries==0)
{
undoQueue.numEntries++;
undoQueue.currentEntry=0;
}
else if(undoQueue.currentEntry < (undoQueue.numEntries-1))
{
undoQueue.currentEntry++;
undoQueue.numEntries=undoQueue.currentEntry+1;
}
else if(undoQueue.numEntries==20)
{
for(int i=0; i<19; i++)
{
undoQueue.entry[i]=undoQueue.entry[i+1];
}
}
else
{
undoQueue.numEntries++;
undoQueue.currentEntry++;
}
undoQueue.entry[undoQueue.currentEntry].from=Side[clicked[0]].tile[clicked[1]][clicked[2]].color;
undoQueue.entry[undoQueue.currentEntry].to=paintColour;
for(int i=0; i<3; i++)
undoQueue.entry[undoQueue.currentEntry].position[i]=clicked[i];
Side[clicked[0]].tile[clicked[1]][clicked[2]].color=paintColour;
}
}else{
Grabbing=true;
Picking=false;
}
}
glPopMatrix(1);
}else{
//Twisting=false;
}
}
void unitVector (int32* vector)
{
int32 magnitude = sqrtf32(mulf32(vector[0], vector[0]) + mulf32(vector[1], vector[1]));
vector[0]=divf32(vector[0], magnitude);
vector[1]=divf32(vector[1], magnitude);
}