void draw_sprites(int rotation)
{
spSetZTest( sprites_z );
spSetZSet( sprites_z );
SDL_Surface* screen = spGetWindowSurface();
spRotozoomSurface( screen->w / 4, screen->h / 4, 0, sprites_garfield, spSin( rotation * 4 ) + ( spFloatToFixed( 1.5f ) ) >> 2, spCos( rotation * 8 ) + ( spFloatToFixed( 1.5f ) ) >> 2, rotation );
spRotozoomSurfacePart( 3 * screen->w / 4, screen->h / 4, 0, sprites_garfield, sprites_garfield->w / 4, sprites_garfield->h / 4, sprites_garfield->w / 2, sprites_garfield->w / 2, spSin( rotation * 4 ) + ( spFloatToFixed( 1.5f ) ) >> 1, spCos( rotation * 8 ) + ( spFloatToFixed( 1.5f ) ) >> 1, rotation );
sprite->rotation = 0;
spDrawSprite( screen->w / 5, 5 * screen->h / 8, 0, sprite );
sprite->zoomX = spSin( rotation * 8 ) + ( spFloatToFixed( 1.5f ) );
sprite->zoomY = spCos( rotation * 6 ) + ( spFloatToFixed( 1.5f ) );
spDrawSprite( 2 * screen->w / 5, 5 * screen->h / 8, 0, sprite );
sprite->zoomX *= -1;
sprite->rotation = rotation * 4;
spDrawSprite( 3 * screen->w / 5, 5 * screen->h / 8, 0, sprite );
sprite->zoomX = SP_ONE;
sprite->zoomY = SP_ONE;
spDrawSprite( 4 * screen->w / 5, 5 * screen->h / 8, 0, sprite );
spSetZTest( 0 );
spSetZSet( 0 );
}
void draw_function( void )
{
//Cleaning the target (in this case the screen surface) with 0 (black).
//In this case I don't clean the zBuffer, because I don't use it. ;-)
//But you ARE able to use it, if you want!
spResetZBuffer();
spClearTarget( 34567 );
//Set the origin:
switch ( ( rotation >> 17 ) % 9 )
{
case 0:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_CENTER );
break;
case 1:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_CENTER );
break;
case 2:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_TOP );
break;
case 3:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_TOP );
break;
case 4:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_TOP );
break;
case 5:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_CENTER );
break;
case 6:
spSetHorizontalOrigin( SP_RIGHT );
spSetVerticalOrigin( SP_BOTTOM );
break;
case 7:
spSetHorizontalOrigin( SP_CENTER );
spSetVerticalOrigin( SP_BOTTOM );
break;
case 8:
spSetHorizontalOrigin( SP_LEFT );
spSetVerticalOrigin( SP_BOTTOM );
break;
}
//Drawing the sprite in the middle of the screen
spDrawSprite( screen->w / 2, screen->h / 2, -1, sprite );
spDrawSprite( screen->w - 1, screen->h - 1, -1, sprite );
spDrawSprite( screen->w - 1, 0, -1, sprite );
spDrawSprite( 0, screen->h - 1, -1, sprite );
spDrawSprite( 0, 0, -1, sprite );
//mark the center
//spEllipseBorder( screen->w / 2, screen->h / 2, -100, 60+spSin(rotation/2)/1000, 60+spCos(rotation/3)/1000, 20+spCos(rotation/7)/10000, 20+spSin(rotation/5)/10000, 0 );
spEllipseBorder( screen->w / 2, screen->h / 2, -100, 6, 6, 2, 2, 0 );
//Show it!
spFlip();
}
void draw_target(int rotation)
{
SDL_Surface* screen = spGetWindowSurface();
//drawing on the target_texture
spSelectRenderTarget(target_texture);
spClearTarget(65535);
spSetZSet(0);
spSetZTest(0);
target_sprite->rotation = 0;
spDrawSprite( target_texture->w / 4, target_texture->h / 4, 0, target_sprite );
target_sprite->zoomX = spSin( rotation * 8 ) + spFloatToFixed( 1.5f );
target_sprite->zoomY = spCos( rotation * 6 ) + spFloatToFixed( 1.5f );
spDrawSprite( 3 * target_texture->w / 4, target_texture->h / 4, 0, target_sprite );
target_sprite->rotation = rotation * 4;
spDrawSprite( target_texture->w / 4, 3 * target_texture->h / 4, 0, target_sprite );
target_sprite->zoomX = SP_ONE;
target_sprite->zoomY = SP_ONE;
spDrawSprite( 3 * target_texture->w / 4, 3 * target_texture->h / 4, 0, target_sprite );
//drawing on the target_graph
spSelectRenderTarget(target_graph);
spClearTarget(01234);
spSetZSet(0);
spSetZTest(0);
Uint16* pixeldata = spGetTargetPixel();
int x;
for (x = 0;x < GRAPH_SIZE; x++)
{
Sint32 sx = spIntToFixed(x-GRAPH_SIZE/2)/16;
Sint32 sy = spSin(sx+rotation*16);
int y = spFixedToInt(sy*16)+GRAPH_SIZE/2;
if (y>=0 && y<GRAPH_SIZE)
pixeldata[y*GRAPH_SIZE+x] = 56789;
sy = spCos(sx+rotation*32);
y = spFixedToInt(sy*16)+GRAPH_SIZE/2;
if (y>=0 && y<GRAPH_SIZE)
pixeldata[y*GRAPH_SIZE+x] = 45678;
}
spUnlockRenderTarget();
for (x = 0;x < GRAPH_SIZE-1; x++)
{
Sint32 sx1 = spIntToFixed(x-GRAPH_SIZE/2)/16;
Sint32 sy1 = spTan(sx1+rotation*8);
int y1 = spFixedToInt(sy1*16)+GRAPH_SIZE/2;
Sint32 sx2 = spIntToFixed(x+1-GRAPH_SIZE/2)/16;
Sint32 sy2 = spTan(sx2+rotation*8);
int y2 = spFixedToInt(sy2*16)+GRAPH_SIZE/2;
spLine(x,y1,0,x+1,y2,0,34567);
sy1 = spAcos(sx1/2+spSin(rotation*24));
y1 = spFixedToInt(sy1*16)+GRAPH_SIZE/2;
sy2 = spAcos(sx2/2+spSin(rotation*24));
y2 = spFixedToInt(sy2*16)+GRAPH_SIZE/2;
spLine(x,y1,0,x+1,y2,0,23456);
sy1 = spAsin(sx1/2+spCos(rotation*24));
y1 = spFixedToInt(sy1*16)+GRAPH_SIZE/2;
sy2 = spAsin(sx2/2+spCos(rotation*24));
y2 = spFixedToInt(sy2*16)+GRAPH_SIZE/2;
spLine(x,y1,0,x+1,y2,0,12345);
}
//drawing on the screen
spSelectRenderTarget(screen);
spClearTarget(0);
spSetZSet(1);
spSetZTest(1);
spResetZBuffer();
spIdentity();
spTranslate( 0,0, spFloatToFixed( -7.0f ) );
spRotateX( rotation );
spRotateY( rotation );
spRotateZ( rotation );
//Front / Back
spBindTexture(target_texture);
spQuadTex3D( -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, target_texture->h - 1,
-spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, 0,
spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_texture->w - 1, 0,
spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_texture->w - 1, target_texture->h - 1, 65535);
spQuadTex3D( spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, target_texture->h - 1,
spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, 0,
-spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_texture->w - 1, 0,
-spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_texture->w - 1, target_texture->h - 1, 65535 );
//Left / Right
spBindTexture(target_graph);
spQuadTex3D( -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, target_graph->h - 1,
-spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, 0,
-spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_graph->w - 1, 0,
-spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_graph->w - 1, target_graph->h - 1, 65535 );
spQuadTex3D( spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, target_graph->h - 1,
spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, 0,
spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_graph->w - 1, 0,
spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_graph->w - 1, target_graph->h - 1, 65535 );
//Up / Down
spBindTexture(target_garfield);
spQuadTex3D( spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, target_garfield->h - 1,
spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, 0,
-spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_garfield->w - 1, 0,
-spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_garfield->w - 1, target_garfield->h - 1, 65535 );
spQuadTex3D( -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), 0, target_garfield->h - 1,
-spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), 0, 0,
spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), target_garfield->w - 1, 0,
spFloatToFixed( 1.5f ), -spFloatToFixed( 1.5f ), spFloatToFixed( 1.5f ), target_garfield->w - 1, target_garfield->h - 1, 65535 );
}
