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zero_order2.littlefoot
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/*
Zero Order II - a generative system for the ROLI Lightpad Block
Donya Quick
Features generative algorithms based on Zero Order (generative piano system I made a while ago).
*/
/*
<metadata description="Random Music Machine" details="Random Pentatonic Music" target="Lightpad" tags="Controller;MIDI" canEmbedModes="false">
<variables>
<variable name="channel" displayName="MIDI Channel" type="int" min="1" max="16" value="1" displayMode="stepper" tooltip="The MIDI channel that values are sent on" />
<variable name="channel2" displayName="MIDI Channel" type="int" min="1" max="16" value="2" displayMode="stepper" tooltip="The MIDI channel that values are sent on" />
<variable name="kickChannel" displayName="MIDI Channel" type="int" min="1" max="16" value="3" displayMode="stepper" tooltip="The MIDI channel that values are sent on" />
<variable name="kickPitch" displayName="Kick Pitch" type="int" min="0" max="127" value="36" displayMode="stepper" tooltip="The MIDI channel that values are sent on" />
</variables>
</metadata>
*/
int millis; // last time we generated something
int milliThresh; // timer setting that will change based on X position
float lastTouchX; // last X touch position
float lastTouchY; // last Y touch position
float centerX; // last center of the generative setting (may differ from last touch)
float centerY; // last center of the generative setting (may differ from last touch)
bool fillMiddle; // whether tof ill the middle of the generative setting indicator
int lastRandPitch; // last pitch played
int lastBassPitch;
bool play; // are we generating? Default is false
int root; // scale root - you can change it by sending MIDI note on events to the block
int range; // lower end of the range, which responds to Z-axis (pressure)
bool push; // whether the pressure is enough that the range should change
float lastTouchX0; // for screen zero
float lastTouchY0; // for screen zero
// pitch history
int p0;
int p1;
int p2;
int p3;
int p4;
int p5;
int p6;
int p7;
int p8;
int p9;
int p10;
int p11;
int historyLength;
int filledPitches;
// for step sequencer
bool grid00;
bool grid01;
bool grid02;
bool grid03;
bool grid10;
bool grid11;
bool grid12;
bool grid13;
bool grid20;
bool grid21;
bool grid22;
bool grid23;
bool grid30;
bool grid31;
bool grid32;
bool grid33;
// misc other variables
int screen;
int position;
int screenCount;
int pianoOctave;
bool kick;
// API function called on start
void initialise()
{
milliThresh=1000;
millis = getMillisecondCounter();
for (int i = 0; i < 32; ++i)
setLocalConfigActiveState (i, false, false);
lastTouchX = 1;
lastTouchY = 1;
lastTouchX0 = 1;
lastTouchY0 = 2;
lastRandPitch = -1; // negative means no pitch
p0 = -1;
p1 = -1;
p2 = -1;
p3 = -1;
p4 = -1;
p5 = -1;
p6 = -1;
p7 = -1;
p8 = -1;
p9 = -1;
p10 = -1;
p11 = -1;
historyLength = 5;
screen = 0;
screenCount=5;
pianoOctave = 3;
}
void checkGridTouch(float xRaw, float yRaw) {
int x = int(14*xRaw/2);
int y = int(14*yRaw/2);
if (y<4) { // top row
if (x<4)
grid00 = !grid00;
else if (x<8)
grid01 = !grid01;
else if (x<12)
grid02 = !grid02;
else
grid03 = !grid03;
} else if (y<8) { // 2nd row
if (x<4)
grid10 = !grid10;
else if (x<8)
grid11 = !grid11;
else if (x<12)
grid12 = !grid12;
else
grid13 = !grid13;
} else if (y<12) { // 3rd row
if (x<4)
grid20 = !grid20;
else if (x<8)
grid21 = !grid21;
else if (x<12)
grid22 = !grid22;
else
grid23 = !grid23;
} else { // bottom row
if (x<4)
grid30 = !grid30;
else if (x<8)
grid31 = !grid31;
else if (x<12)
grid32 = !grid32;
else
grid33 = !grid33;
}
}
void checkGridTouchPiano(float xRaw, float yRaw) {
int x = int(14*xRaw/2);
int y = int(14*yRaw/2);
if (y<4) { // top row: G#, A, A#, B / 8, 9, 10, 11
if (x<4)
newPitch(8+pianoOctave*12);
else if (x<8)
newPitch(9+pianoOctave*12);
else if (x<12)
newPitch(10+pianoOctave*12);
else
newPitch(11+pianoOctave*12);
} else if (y<8) { // 2nd row: E, F, F#, G / 4, 5, 6, 7
if (x<4)
newPitch(4+pianoOctave*12);
else if (x<8)
newPitch(5+pianoOctave*12);
else if (x<12)
newPitch(6+pianoOctave*12);
else
newPitch(7+pianoOctave*12);
} else if (y<12) { // 3rd row: C, C#, D, D# / 0, 1, 2, 3
if (x<4)
newPitch(pianoOctave*12);
else if (x<8)
newPitch(1+pianoOctave*12);
else if (x<12)
newPitch(2+pianoOctave*12);
else
newPitch(3+pianoOctave*12);
} else { // bottom row: octave controls
if (x<4)
pianoOctave--;
else if (x>=12)
pianoOctave++;
}
}
void newPitch(int inPitch) {
p11 = p10;
p10 = p9;
p9 = p8;
p8 = p7;
p7 = p6;
p6 = p5;
p5 = p4;
p4 = p3;
p3 = p2;
p2 = p1;
p1 = p0;
p0 = inPitch;
if (filledPitches <= historyLength) {
filledPitches++;
}
}
int pickPitch() {
int r = getRandomInt(min(historyLength, filledPitches));
r = min(r, historyLength);
r = min(r, filledPitches);
if (r < 0 || filledPitches <= 0 || historyLength <=0)
return -1;
else if (r<=0)
return p0;
else if (r<=1)
return p1;
else if (r<=2)
return p2;
else if (r<=3)
return p3;
else if (r<=4)
return p4;
else if (r<=5)
return p5;
else if (r<=6)
return p6;
else if (r<=7)
return p7;
else if (r<=8)
return p8;
else if (r<=9)
return p9;
else if (r<=10)
return p10;
else
return p11;
}
// following along an axis
float follow(float inCoord, float lastTouchCoord, float thresh) {
float retVal = lastTouchCoord;
if (abs(inCoord-lastTouchCoord)<thresh)
retVal = inCoord;
else if (inCoord > lastTouchCoord)
retVal += thresh;
else if (inCoord < lastTouchCoord)
retVal -= thresh;
return retVal;
}
// What to do when the user pushes on the device
void handleTouch(int index, float x, float y, float z) {
if (index==1) {
centerX = x;
centerY = y;
}
if (screen==0) {
lastTouchX0 = follow(x, lastTouchX0, 0.05);
lastTouchY0 = follow(y, lastTouchY0, 0.05);
if (lastTouchY0 > 1.5)
play = false;
else
play = true;
int maxVal = 12;
historyLength = int(maxVal*lastTouchX0/2);
//log(historyLength);
} else if (screen==1) {
if (index==1) {
lastTouchX = follow(x, lastTouchX, 0.02);
lastTouchY = follow(y, lastTouchY, 0.02);
if (z>=0.5) {
//range = -int(3*(z-0.5));
push = true;
} else {
push = false;
}
}
} else if (screen==3) {
addPressurePoint (0xFFFF00, x, y, z * 10.0);
}
}
// API function called at the onset of a touch series
void touchStart (int index, float x, float y, float z, float vz)
{
if (index==1) {
fillMiddle = true;
if (screen==0) {
// do nothing
} else if (screen==1){
if (index==1) {
handleTouch(index,x,y,z);
}
} else if (screen==2) {
checkGridTouch(x,y);
} else if (screen==4) {
emptyRect(0xFFFFFF, 1,1,14,14);
int xPixel = int(15*x/2);
int yPixel = int(15*y/2);
if (xPixel > 4 && xPixel < 11 && yPixel > 4 && yPixel < 11)
kick = !kick;
} else if (screen==3) {
checkGridTouchPiano(x,y); // screen 3
}
}
}
// API function called whenever the touch moves
void touchMove (int index, float x, float y, float z, float vz)
{
if (index==1) {
handleTouch(index,x,y,z);
}
}
// API function called whenever the touch series ends
void touchEnd (int index, float x, float y, float z, float vz)
{
if (index==1)
fillMiddle = false;
if (screen==0) {
} else {
if (index==1) {
handleTouch(index,x,y,z);
}
}
}
// API function called on each update
void repaint()
{
if (screen==0) {
paintScreen0();
} else if (screen==1) {
paintScreen1();
} else if (screen==2) {
paintScreen2();
} else if (screen==3){
paintScreen3();
} else {
paintScreen4();
}
tickUpdate();
}
void paintScreen0() {
blendRect(0x20000010, 0,0,15,15);
drawTouch(0x40050000, 0x80100000, lastTouchX0, lastTouchY0, centerX, centerY);
blendRect(0x20300000, 0,10,15,1);
//float yPercent = 1.0 - lastTouchY0/2;
milliThresh = 800-int(800*(2.0-lastTouchY0)/2);
milliThresh = max(125,milliThresh);
}
void paintScreen1() {
blendRect(0x20000000, 0, 0, 15, 15);
drawTouch(0x40000000, 0x00FFFF, lastTouchX, lastTouchY, centerX, centerY);
}
void paintScreen2() {
int gridColor = 0x77000000;
int pipColor = 0xF0F000;
int activeColor= 0x532000;
blendRect(0x200F0000, 0, 0, 15, 15);
blendRect(gridColor, 0, 3, 15, 1);
blendRect(gridColor, 0, 7, 15, 1);
blendRect(gridColor, 0, 11, 15, 1);
blendRect(gridColor, 3, 0, 1, 15);
blendRect(gridColor, 7, 0, 1, 15);
blendRect(gridColor, 11, 0, 1, 15);
// 0, 4, 8, 12
if (position==0)
emptyRect(pipColor, 0, 0, 4, 4);
if (position==1)
emptyRect(pipColor, 4, 0, 4, 4);
if (position==2)
emptyRect(pipColor, 8, 0, 4, 4);
if (position==3)
emptyRect(pipColor, 12, 0, 4, 4);
if (position==4)
emptyRect(pipColor, 0, 4, 4, 4);
if (position==5)
emptyRect(pipColor, 4, 4, 4, 4);
if (position==6)
emptyRect(pipColor, 8, 4, 4, 4);
if (position==7)
emptyRect(pipColor, 12, 4, 4, 4);
if (position==8)
emptyRect(pipColor, 0, 8, 4, 4);
if (position==9)
emptyRect(pipColor, 4, 8, 4, 4);
if (position==10)
emptyRect(pipColor, 8, 8, 4, 4);
if (position==11)
emptyRect(pipColor, 12, 8, 4, 4);
if (position==12)
emptyRect(pipColor, 0, 12, 4, 4);
if (position==13)
emptyRect(pipColor, 4, 12, 4, 4);
if (position==14)
emptyRect(pipColor, 8, 12, 4, 4);
if (position==15)
emptyRect(pipColor, 12, 12, 4, 4);
if (grid00)
fillRect(activeColor, 0, 0, 3, 3);
if (grid01)
fillRect(activeColor, 4, 0, 3, 3);
if (grid02)
fillRect(activeColor, 8, 0, 3, 3);
if (grid03)
fillRect(activeColor, 12, 0, 3, 3);
if (grid10)
fillRect(activeColor, 0, 4, 3, 3);
if (grid11)
fillRect(activeColor, 4, 4, 3, 3);
if (grid12)
fillRect(activeColor, 8, 4, 3, 3);
if (grid13)
fillRect(activeColor, 12, 4, 3, 3);
if (grid20)
fillRect(activeColor, 0, 8, 3, 3);
if (grid21)
fillRect(activeColor, 4, 8, 3, 3);
if (grid22)
fillRect(activeColor, 8, 8, 3, 3);
if (grid23)
fillRect(activeColor, 12, 8, 3, 3);
if (grid30)
fillRect(activeColor, 0, 12, 3, 3);
if (grid31)
fillRect(activeColor, 4, 12, 3, 3);
if (grid32)
fillRect(activeColor, 8, 12, 3, 3);
if (grid33)
fillRect(activeColor, 12, 12, 3, 3);
}
void paintScreen3() {
blendRect(0x20000000, 0, 0, 15, 15);
int whiteKeyColor = 0x555555;
int blackKeyColor = 0x5555FF;
drawPressureMap();
fadePressureMap();
fillRect(blackKeyColor, 0, 0, 3, 3);
fillRect(whiteKeyColor, 0, 4, 3, 3);
fillRect(whiteKeyColor, 0, 8, 3, 3);
fillRect(whiteKeyColor, 4, 0, 3, 3);
fillRect(whiteKeyColor, 4, 4, 3, 3);
fillRect(blackKeyColor, 4, 8, 3, 3);
fillRect(blackKeyColor, 8, 0, 3, 3);
fillRect(blackKeyColor, 8, 4, 3, 3);
fillRect(whiteKeyColor, 8, 8, 3, 3);
fillRect(whiteKeyColor, 12, 0, 3, 3);
fillRect(whiteKeyColor, 12, 4, 3, 3);
fillRect(blackKeyColor, 12, 8, 3, 3);
fillRect(0xFF0000, 1, 12, 2, 3);
fillRect(0xFF0000, 0, 13, 1, 1);
fillRect(0x0000FF, 12, 12, 2, 3);
fillRect(0x0000FF, 14, 13, 1, 1);
}
void paintScreen4() {
int edgeColor = 0x20FF0000;
blendRect(0x20000000, 0, 0, 15, 15);
emptyRectBlend(edgeColor,4,4,8,8);
if(kick)
blendRect(0x20500030, 4, 4, 7, 7);
}
void checkPlayGrid() {
if (grid00 && position==0)
playPip();
if (grid01 && position==1)
playPip();
if (grid02 && position==2)
playPip();
if (grid03 && position==3)
playPip();
if (grid10 && position==4)
playPip();
if (grid11 && position==5)
playPip();
if (grid12 && position==6)
playPip();
if (grid13 && position==7)
playPip();
if (grid20 && position==8)
playPip();
if (grid21 && position==9)
playPip();
if (grid22 && position==10)
playPip();
if (grid23 && position==11)
playPip();
if (grid30 && position==12)
playPip();
if (grid31 && position==13)
playPip();
if (grid32 && position==14)
playPip();
if (grid33 && position==15)
playPip();
}
void playPip() {
if (play && filledPitches>0) {
int tempPitch = pickPitch();
if (tempPitch >=0) {
lastBassPitch = 36+tempPitch%12;
sendNoteOn(channel2-1,lastBassPitch,80+getRandomInt(40));
}
}
}
void emptyRect(int edgeColor, int x, int y, int w, int h) {
fillRect(edgeColor,x-1,y-1,w+1,1);
fillRect(edgeColor,x-1,y-1,1,h+1);
fillRect(edgeColor,x-1,y+h-1,w+1,1);
fillRect(edgeColor,x+w-1,y-1,1,h+1);
}
void emptyRectBlend(int edgeColor, int x, int y, int w, int h) {
blendRect(edgeColor,x-1,y-1,w+1,1);
blendRect(edgeColor,x-1,y-1,1,h+1);
blendRect(edgeColor,x-1,y+h-1,w+1,1);
blendRect(edgeColor,x+w-1,y-1,1,h+1);
}
// what to draw each frame
void drawTouch(int touchColor, int borderColor, float x1, float y1, float xc, float yc) {
if (lastTouchX >= 0 && lastTouchY >=0) {
int x = int(x1*7);
int y = int(y1*7);
int x2 = int(xc*7);
int y2 = int(yc*7);
int edgeColor = borderColor;
if (push && screen==1)
edgeColor = 0x0000FF;
blendRect(touchColor, x,y,2,2);
fillRect(edgeColor,x-1,y-1,4,1);
fillRect(edgeColor,x-1,y,1,3);
fillRect(edgeColor,x-1,y+2,4,1);
fillRect(edgeColor,x+2,y,1,2);
if (fillMiddle)
fillRect(0xFFFF00, x2,y2,2,2);
}
}
// API function called when the side button is pushed
void handleButtonDown (int index) {
if (screen==0) {
//play = !play;
if (!play && lastRandPitch>=0) // if we stop playing and played a pitch...
sendNoteOff(channel,lastRandPitch,0); // we better turn it off!
}
screen = (screen+1)%screenCount;
}
// API function called when the block receives a MIDI message from an external device
void handleMIDI(int b0, int b1, int b2) {
int type = b0 & 0xF0;
int chan = b0 & 0x0F;
if (type==144) // note on check
//root = b1%12;
newPitch(b1);
}
// Make it pretty when a note is generated by lighting up a pixel
void tickUpdate() {
int t = getMillisecondCounter(); // what time is it now?
if (t - millis >= milliThresh) { // have we waited long enough to generate a new note?
position = (position+1)%16;
sendNoteOff(kickChannel-1,kickPitch,120);
if (kick && play && position%4==0) {
sendNoteOn(kickChannel-1,kickPitch,120); // play the note
if (screen==4) {
emptyRect(0xFFFF00,4,4,8,8);
emptyRect(0xFFFF00,3,3,10,10);
}
}
millis = t; // record the current time
int color = getRandomInt(0xFFFFFF); // pick a random color
if (lastRandPitch>=0) // did we play a pitch previously?
sendNoteOff(channel-1,lastRandPitch,0); // if yes, then we need to turn it off
if (lastBassPitch>=0) // did we play a pitch previously?
sendNoteOff(channel2-1,lastBassPitch,0); // if yes, then we need to turn it off
//lastRandPitch = fitMajorPenta(root, getRandomInt(30)+70+range); // calculate a new pitch
int tempPitch = pickPitch();
int oct = int(3*lastTouchX/2);
if (push)
oct -= 2;
lastRandPitch = tempPitch + 12*oct;
int volCap = min(120, 40+getRandomInt(int(100*lastTouchY/2)));
int vol = 125-(volCap/2 + getRandomInt(volCap/2));
//int vol = 27+100-int(100*lastTouchY/2); // volume is based on Y axis
if (play) {
if (lastRandPitch >= 0 && filledPitches > 0) {
if (lastRandPitch >=0) {
fillPixel(color, getRandomInt(15), getRandomInt(15)); // light it up!
sendNoteOn(channel-1,lastRandPitch+12,vol); // play the note
}
}
checkPlayGrid();
}
}
}