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arduino_pong/pong_render.cpp

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#include <Arduino.h>
#include "config.h"
void render_matrix(byte frame[MATRIX_HEIGHT][MATRIX_WIDTH], int p1_start, int p2_start, int &need_refresh, int ball_x, int ball_y) {
if (!need_refresh) return;
need_refresh= 0;
// clear
for (int x=0; x < MATRIX_WIDTH; x++) {
for (int y=0; y < MATRIX_HEIGHT; y++) {
frame[y][x]= 0;
}
}
// players coords
for (int i= p1_start; i < p1_start+BAR_LENGTH; i++) {
frame[i][0]= 1;
}
for (int i= p2_start; i < p2_start+BAR_LENGTH; i++) {
frame[i][MATRIX_WIDTH-1]= 1;
}
// ball coords
frame[ball_y][ball_x]= 1;
}