void ofApp::update(){
float frame = ofGetFrameNum();
ofVec3f attractor( 10, 10, 50 );
attractor.rotate( ofGetFrameNum()/4, ofVec3f(0.5, 0.3, 0.1) );
ofVec3f diff;
for( int i=0; i<shapes.size(); i++ ){
ofVec3f pos = shapes[i]->getPosition();
diff = attractor - pos;
float dist2 = diff.lengthSquared();
float power = (1.0/dist2) * 50000.0;
ofVec3f force( 0,0,0 );
if( 1 ){
float noise = 0;
float amp = 0.5;
for( int j=0; j<4; j++ ){
noise += ofNoise( pos.x, pos.y, pos.z, frame*0.001) * amp;
amp *= 0.5;
}
force += diff.normalized() * power;
}
#pragma mark ADD_PERLIN_NOISE
if( 0 ){
ofVec3f noise; noise.zero();
float amp = 0.5;
for( int j=0; j<4; j++ ){
noise.x += ofSignedNoise( pos.x, frame*0.001 ) * amp;
noise.y += ofSignedNoise( pos.y, frame*0.001 ) * amp;
noise.z += ofSignedNoise( pos.z, frame*0.001 ) * amp;
amp *= 0.5;
}
force += noise*5.0;
}
shapes[i]->applyCentralForce( force );
points.setVertex( i, pos );
}
lines.clear();
int num_line = 3; // per point
for( int i=0; i<shapes.size(); i++ ){
// if(ofRandom(1.0)>0.1)
// continue;
ofVec3f pos1 = shapes[i]->getPosition();
multimap<float, ofVec3f> near_p;
pair<float, ofVec3f> pair1( 999999999999, ofVec3f(0,0,0) );
for( int line=0; line<num_line; line++ ){
near_p.insert( pair1 );
}
for( int j=i+1; j<shapes.size(); j++ ){
ofVec3f pos2 = shapes[j]->getPosition();
float dist = pos1.distance( pos2 );
multimap<float, ofVec3f>::iterator itr = near_p.end();
itr--;
if( dist < itr->first ){
std::pair<float, ofVec3f> pair2( dist, pos2 );
near_p.insert( pair2 );
multimap<float, ofVec3f>::iterator end = near_p.end();
near_p.erase( --end );
}
}
multimap<float, ofVec3f>::iterator itr = near_p.begin();
for(; itr!=near_p.end(); itr++ ){
ofVec3f &pos2 = itr->second;
lines.addVertex( pos1 );
lines.addVertex( pos2 );
lines.addColor( ofFloatColor( ofRandom(0.2,0.4), ofRandom(0.2, 0.4)) );
lines.addColor( ofFloatColor( ofRandom(0.2,0.4), ofRandom(0.2, 0.4)) );
}
}
world.update();
}
int menu(SDL_Surface *screen, SDL_Surface *vscreen) {
unsigned frameStart;
bool leave = false;
// Load and prepare the background image
SDL_Surface *loadedImage = IMG_Load("title.png");
if (!loadedImage) {
fprintf(stderr, "Could not load title image.\n");
return MENU_ERROR;
}
SDL_Surface *background = SDL_DisplayFormatAlpha(loadedImage);
SDL_FreeSurface(loadedImage);
TTF_Font *fontSmall = TTF_OpenFont("FreeSansBold.ttf", 10);
TTF_Font *fontLarge = TTF_OpenFont("FreeSansBold.ttf", 12);
if (!fontSmall || !fontLarge) {
fprintf(stderr, "Could not load font.\n");
return MENU_ERROR;
}
SDL_Color playerFontColour, autuinFontColour;
playerFontColour.r = playerFontColour.g = playerFontColour.b = 230;
autuinFontColour.r = autuinFontColour.g = autuinFontColour.b = 200;
SDL_Surface *onePlayerTextSmall = TTF_RenderText_Solid(fontSmall, "ONE PLAYER", playerFontColour);
SDL_Surface *twoPlayerTextSmall = TTF_RenderText_Solid(fontSmall, "TWO PLAYER", playerFontColour);
SDL_Surface *onePlayerTextLarge = TTF_RenderText_Solid(fontLarge, "ONE PLAYER", playerFontColour);
SDL_Surface *twoPlayerTextLarge = TTF_RenderText_Solid(fontLarge, "TWO PLAYER", playerFontColour);
SDL_Surface *autuinText = TTF_RenderText_Solid(fontSmall, "(C) 2012 AUTOMATIC TURQUOISE INTERNATIONAL", autuinFontColour);
TTF_CloseFont(fontSmall);
TTF_CloseFont(fontLarge);
SDL_Rect onePlayerRectSmall, onePlayerRectLarge;
SDL_Rect twoPlayerRectSmall, twoPlayerRectLarge;
onePlayerRectSmall.x = 60; onePlayerRectLarge.x = 50;
twoPlayerRectSmall.x = 190; twoPlayerRectLarge.x = 180;
onePlayerRectSmall.y = twoPlayerRectSmall.y = 172;
onePlayerRectLarge.y = twoPlayerRectLarge.y = 170;
SDL_Rect autuinRect;
autuinRect.x = 35;
autuinRect.y = 187;
Uint32 black = SDL_MapRGB(vscreen->format, 0, 0, 0);
Mix_Chunk *boop = Mix_LoadWAV("boop.wav");
Mix_Chunk *theme = Mix_LoadWAV("title.wav");
if (!boop || !theme) {
fprintf(stderr, "Could not load audio.\n");
return MENU_ERROR;
}
// Initialize the star locations and speeds
Star stars[NUM_STARS];
for (int i=0; i<NUM_STARS; i++) {
stars[i].x = random() / ((float) RAND_MAX) * SCREEN_WIDTH;
stars[i].y = random() / ((float) RAND_MAX) * SCREEN_HEIGHT;
float intensity = random() / (float) RAND_MAX;
unsigned char colourIntensity = (intensity * 155) + 100;
stars[i].speed = intensity * .2;
stars[i].colour = SDL_MapRGB(vscreen->format, colourIntensity, colourIntensity, colourIntensity);
}
Mix_PlayChannel(-1, theme, -1);
char selectedOption = 0;
unsigned int frame = 0;
while (!leave) {
// Handle events
frameStart = SDL_GetTicks();
SDL_Event e;
while (SDL_PollEvent(&e)) switch (e.type) {
case SDL_KEYDOWN: switch (e.key.keysym.sym) {
case SDLK_UP:
case SDLK_LEFT:
if (selectedOption != 0) Mix_PlayChannel(-1, boop, 0);
selectedOption = 0;
frame = 0;
break;
case SDLK_DOWN:
case SDLK_RIGHT:
if (selectedOption != 1) Mix_PlayChannel(-1, boop, 0);
selectedOption = 1;
frame = 0;
break;
case SDLK_ESCAPE:
selectedOption = -1;
leave = true;
break;
case SDLK_UNKNOWN: // Suspend button
selectedOption = -2;
leave = true;
break;
case SDLK_RETURN:
leave = true;
break;
case SDL_QUIT:
selectedOption = -1;
leave = true;
break;
}
}
// Debounce any keys currently down (wait 1 sec)
if (frame >= FPS && controllerHasData()) {
unsigned int c = readController();
if ((c & P1_LEFT) && selectedOption != 0) {
Mix_PlayChannel(-1, boop, 0);
selectedOption = 0;
} else if ((c & P1_RIGHT) && selectedOption != 1) {
Mix_PlayChannel(-1, boop, 0);
selectedOption = 1;
} else if (c & P1_FIRE) {
leave = true;
} else if (c & SELECT) {
selectedOption = -1;
leave = true;
}
frame = FPS;
}
// Draw the frame
SDL_FillRect(vscreen, NULL, black);
SDL_LockSurface(vscreen);
Uint32 *s = (Uint32 *) vscreen->pixels;
for (unsigned int i=0; i<NUM_STARS; i++) {
unsigned x = stars[i].x, y = stars[i].y;
*(s + (y * SCREEN_WIDTH) + x) = stars[i].colour;
stars[i].y += stars[i].speed;
if (stars[i].y >= SCREEN_HEIGHT) stars[i].y = 0;
}
SDL_UnlockSurface(vscreen);
SDL_BlitSurface(background, NULL, vscreen, NULL);
SDL_BlitSurface(autuinText, NULL, vscreen, &autuinRect);
SDL_BlitSurface(
selectedOption==0?onePlayerTextLarge:onePlayerTextSmall,
NULL,
vscreen,
selectedOption==0?&onePlayerRectLarge:&onePlayerRectSmall
);
SDL_BlitSurface(
selectedOption==1?twoPlayerTextLarge:twoPlayerTextSmall,
NULL,
vscreen,
selectedOption==1?&twoPlayerRectLarge:&twoPlayerRectSmall
);
// Double up the resolution
SDL_Surface *zoomed = zoomSurface(vscreen, 2, 2.31, 0);
SDL_BlitSurface(zoomed, NULL, screen, NULL);
SDL_FreeSurface(zoomed);
// Blit the frame
SDL_Flip(screen);
// Go to sleep
SDL_Delay(FRAME_TICKS - (SDL_GetTicks() - frameStart));
frame++;
if (frame > FPS * 30) {
attractor(screen, vscreen);
frame = 0;
}
}
// Stop the audio
Mix_HaltChannel(-1);
// One last boop for the quit/play action
Mix_PlayChannel(-1, boop, 0);
while(Mix_Playing(-1) != 0) SDL_Delay(10);
// Free resources
SDL_FreeSurface (background);
SDL_FreeSurface (autuinText);
SDL_FreeSurface (onePlayerTextSmall);
SDL_FreeSurface (twoPlayerTextSmall);
SDL_FreeSurface (onePlayerTextLarge);
SDL_FreeSurface (twoPlayerTextLarge);
Mix_FreeChunk(boop);
Mix_FreeChunk(theme);
switch (selectedOption) {
case -2: return MENU_SUSPEND;
case -1: return MENU_QUIT;
case 0: return MENU_ONEPLAYER;
case 1: return MENU_TWOPLAYER;
}
}
void main() {
vec4 pos = texture2D(tPositions, vUv);
vec4 pos_prev = texture2D(tPositions2, vUv);
// derive velocity
vec3 velocity = pos_prev.xyz - pos.xyz;
vec3 pos_new;
if (home > 0 || explosionType > 2) {
// HOME MODE
if (explosionType == 3) {
pos_new = velocity * damping + pos_prev.xyz;
} else if (explosionType == 5) {
pos_new = sphere(vUv);
} else if (explosionType == 6) {
pos_new = cone(vUv);
} else if (explosionType == 7) {
pos_new = supershape(vUv);
} else {
pos_new = getInitialTexturePos(vUv, fboWidth, photoDimensions);
}
if (implode == 1) {
pos_new = pos_prev.xyz + (pos_new - pos_prev.xyz) * clamp(exp_ease_out(transition / 0.8), 0.0, 1.0);
}
} else {
// EXPLOSION MODE
if (explosionType == 0) {
velocity.x += SimplexPerlin3D(vec3(pos_prev.x / width, pos_prev.y / width, time)) / slowness; //
velocity.y += SimplexPerlin3D(vec3(pos_prev.x / width + offset, pos_prev.y / width + offset, time)) / slowness;
velocity.z += SimplexPerlin3D(vec3(pos_prev.x / width * 4.0 + 2.0 * offset, pos_prev.y / width * 4.0 + 2.0 * offset, time)) / slowness / 4.0;
// DAMPING
velocity.xyz *= damping;
} else {
vec4 pixel_color = texture2D(photoTexture, vUv);
vec3 r_attractor_pos = vec3(-600.0, -200.0, -340.0);
vec3 g_attractor_pos = vec3(-100.0, 400, -350.0);
vec3 b_attractor_pos = vec3(400.0, -100.0, -300.0);
float d = (explosionType == 2) ? -delta : delta;
velocity += attractor(pos_prev.xyz, r_attractor_pos, pixel_color.r * d);
velocity += attractor(pos_prev.xyz, g_attractor_pos, pixel_color.g * d);
velocity += attractor(pos_prev.xyz, b_attractor_pos, pixel_color.b * d);
// speed limit
float speed_limit = 9.0;
if (length(velocity) > speed_limit) {
velocity = normalize(velocity) * speed_limit;
}
}
pos_new = pos_prev.xyz + velocity;
}
// Write new position out
gl_FragColor = vec4(pos_new, 1.0);
}
