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display.cpp
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display.cpp
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// Abstraction layer for Connect Four display
//
// Variant for Raspberry Pi SenseHat LED display
//
// Written by Stefan Abendroth <sab@ab-solut.com>
// Last updated: 2022-02-09
#include "display.hpp"
#include <unistd.h> // usleep
#include "libs/led_matrix.h" // Raspberry Pi SenseHat LED display
Display::Display()
{
open_led_matrix();
show_empty_board();
}
Display::~Display()
{
hide_board();
close_led_matrix();
}
void Display::show_empty_board()
{
clear_leds();
for (uint8_t row=0; row<ROWS; row++)
for (uint8_t col=0; col<COLUMNS; col++)
set_led(row+2,col,BOARD_COLOR);
}
void Display::hide_board()
{
clear_leds();
}
void Display::show_entry(uint8_t column, uint8_t player)
{
hide_entry();
switch (player)
{
case 1:
set_led(1,column,PLAYER1_COLOR);
break;
case 2:
set_led(1,column,PLAYER2_COLOR);
break;
}
}
void Display::hide_entry()
{
for (uint8_t col=0; col<COLUMNS; col++)
set_led(1,col,RGB565_OFF);
}
void Display::drop_tile(uint8_t column, int8_t target_row, uint8_t player)
{
uint16_t color=BOARD_COLOR;
switch (player)
{
case 1:
color=PLAYER1_COLOR;
break;
case 2:
color=PLAYER2_COLOR;
break;
}
uint8_t row=0;
usleep(100000);
hide_entry();
set_led(row+2,column,color);
while (row<target_row)
{
usleep(100000);
set_led(row+2,column,BOARD_COLOR);
row++;
set_led(row+2,column,color);
}
}
void Display::show_tile(uint8_t row, uint8_t column, uint8_t player)
{
switch (player)
{
case 1:
set_led(row+2,column,PLAYER1_COLOR);
break;
case 2:
set_led(row+2,column,PLAYER2_COLOR);
break;
}
}
void Display::hide_tile(uint8_t row, uint8_t column)
{
set_led(row+2,column,BOARD_COLOR);
}