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// THings that miss
// Functions that return something
#include "sprites.h"
#include "MaxCommands.h"
#define clk 5
#define cs 6
#define dataIn 3
#define setDisplay(d) (curDisplay = d)
//Use the drawDot function to draw
uint8_t buttonLayer[16];
uint8_t topLayer[16];
int curDisplay = 0;
void setup() {
//Init Serial
Serial.begin(9600);
Serial.println("Starting up \n\n\n");
//Init pins
pinMode(cs, OUTPUT);
pinMode(clk, OUTPUT);
pinMode(dataIn, OUTPUT);
//Setup displays
setDisplay(0);
initDisplay();
setDisplay(1);
initDisplay();
}
/////////////////////////////
// GAME LOGIC //
/////////////////////////////
void loop() {
delay(100);
//Clear screen
drawRegion(topLayer, 0xFF, 0xFFFF, false);
//Draw ball
drawSprite(topLayer, 0, 5, &checker);
renderAll();
//renderToSerial();
}
void renderAll(){
setDisplay(0);
render(0);
setDisplay(1);
render(8);
}
void renderToSerial() {
Serial.write(0x33); Serial.println("[2J");
for(int i = 0; i < 16; i++) {
for(int b = 0; b < 8; b++) {
Serial.print( ( buttonLayer[i] & ( 1 << 7 - b ) ) > 0 );
}
Serial.println();
}
}
/////////////////////////////
// Screendrawing routines //
/////////////////////////////
void initDisplay() {
//clear all registers
for ( int i = 0; i < 0x0F; i++) {
writeCommand(i, 0);
}
//Turn it on
writeCommand(maxSHUTDOWN_INV, 1);
//Darker please
writeCommand(maxINTENSITY, 0x01);
//Activate all lines
writeCommand(maxSCAN_LIMIT, 0x07);
}
//Draw a region, where mask specifies where to draw.
// xMask = 0b00111100, yMask = 0b01111110 will draw a small 4x6 box
void drawSprite(uint8_t layer[], uint8_t x, uint8_t y, Sprite* sprite) {
//Check if in range
if (x + sprite->width - 1 > 7 || y + sprite->height - 1> 15 )
return;
//Clear out drawing area
uint8_t xMask = (uint8_t)(~( (1 << ( 8 - sprite->width ) ) -1 )) >> x;
uint16_t yMask = ( (1 << sprite->height ) -1 ) << y;
drawRegion(layer, xMask, yMask, false);
for ( int i = y; i < sprite->height + y; i++) {
//Calculate bits
uint8_t row = layer[i];
row |= sprite->buff[i - y] >> x;
layer[i] = row;
}
}
void drawRegion(uint8_t layer[], uint8_t xMask, uint16_t yMask, bool state) {
for (int i = 0; i < 16; i++ ) {
//If y index not in mask, go to next
if (! ( yMask & 1 << i ) )
continue;
//Flip the bits
uint8_t row = layer[i];
if ( state ) {
//Write 1 where on the 1's places in xMask
row |= xMask;
} else {
//Write 0. ~ means bitwise NOT
row &= ~( xMask );
}
layer[i] = row;
}
}
void render(int where) {
for(int i = where; i < (where + 8); i++ ) {
writeCommand(maxDIGIT_0 + i - where, buttonLayer[i]);
}
//Shift everything throught
for( int i = 0; i < curDisplay; i++) {
writeCommand(0, 0);
}
}
void writeCommand(uint8_t addr, uint8_t data) {
uint16_t uint8_tToWrite = addr << 8 | data;
//Set Chip select low
digitalWrite(cs, LOW);
//MSBFIRST is a arduino standard, which says that data goes from left to right
shiftOut(dataIn, clk, MSBFIRST, addr);
shiftOut(dataIn, clk, MSBFIRST, data);
//To get to other displays padding is added to step through them
serialPad(curDisplay * 2);
digitalWrite(cs, HIGH);
//To Clear out other displays more padding is added
serialPad(2 * 2);
}
void serialPad(int count) {
for(int i = 0; i < count; i++) {
//Pad with no-ops
shiftOut(dataIn, clk, MSBFIRST, 0);
}
}
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