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nuttx-apps/games/shift/shift_main.c
Xiang Xiao 76fece26a2 Fix Error: shift_main.c:763:7: error: variable 'score' set but not used [-Werror,-Wunused-but-set-variable] 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-10-31 06:28:17 +01:00

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/****************************************************************************
* apps/games/shift/shift_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <math.h>
#include <nuttx/video/fb.h>
#include <nuttx/video/rgbcolors.h>
#ifdef CONFIG_GAMES_SHIFT_USE_CONSOLEKEY
#include "shift_input_console.h"
#endif
#ifdef CONFIG_GAMES_SHIFT_USE_DJOYSTICK
#include "shift_input_joystick.h"
#endif
#ifdef CONFIG_GAMES_SHIFT_USE_GESTURE
#include "shift_input_gesture.h"
#endif
/****************************************************************************
* Preprocessor Definitions
****************************************************************************/
#define BOARDX_SIZE 6
#define BOARDY_SIZE 6
#define ROW 8
#define COL 8
/* Difficult mode: 4, 5, 6 */
#define GAMEMODE 6
#define NCOLORS GAMEMODE
/****************************************************************************
* Private Types
****************************************************************************/
struct screen_state_s
{
int fd_fb;
struct fb_videoinfo_s vinfo;
struct fb_planeinfo_s pinfo;
#ifdef CONFIG_FB_OVERLAY
struct fb_overlayinfo_s oinfo;
#endif
FAR void *fbmem;
};
struct game_screen_s
{
int xres; /* X display resolution */
int yres; /* Y display resolution */
int xoff; /* X offset to start drawing */
int yoff; /* Y offset to start drawing */
int ncolors; /* Supported number of colors */
int blklen; /* Size of side of the blocks */
int steps; /* Steps to slide a block for a now position */
int stepinc; /* Step increment during the sliding */
int dir; /* Direction to move the blocks */
};
/****************************************************************************
* Private Data
****************************************************************************/
static const char g_default_fbdev[] = "/dev/fb0";
/* The edge of the board is invisible to user */
int board[ROW][COL] =
{
{1, 1, 1, 1, 1, 1, 1, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 1, 1, 1, 1, 1, 1, 1}
};
int prev_board[ROW][COL] =
{
{1, 1, 1, 1, 1, 1, 1, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 0, 0, 0, 0, 0, 0, 1},
{1, 1, 1, 1, 1, 1, 1, 1}
};
/* Colors used in the game plus Black */
static const uint16_t pallete[NCOLORS + 1] =
{
RGB16_BLACK,
RGB16_BLUE,
RGB16_GREEN,
RGB16_RED,
RGB16_CYAN,
RGB16_WHITE,
RGB16_GOLD,
};
/****************************************************************************
* Private Functions
****************************************************************************/
static void draw_rect(FAR struct screen_state_s *state,
FAR struct fb_area_s *area, int color)
{
FAR uint16_t *dest;
FAR uint8_t *row;
int x;
int y;
row = (FAR uint8_t *)state->fbmem + state->pinfo.stride * area->y;
for (y = 0; y < area->h; y++)
{
dest = ((FAR uint16_t *)row) + area->x;
for (x = 0; x < area->w; x++)
{
*dest++ = pallete[color];
}
row += state->pinfo.stride;
}
}
void update_screen(FAR struct screen_state_s *state,
FAR struct fb_area_s *area)
{
int ret;
#ifdef CONFIG_FB_UPDATE
ret = ioctl(state->fd_fb, FBIO_UPDATE,
(unsigned long)((uintptr_t)area));
if (ret < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: ioctl(FBIO_UPDATE) failed: %d\n",
errcode);
}
#endif
}
/* Draw the user board without the edges */
void draw_board(FAR struct screen_state_s *state,
FAR struct fb_area_s *area,
FAR struct game_screen_s *screen)
{
int row;
int col;
int x;
int y;
int i;
int color;
/* Clear the framebuffer, but don't update yet */
area->x = 0;
area->y = 0;
area->w = screen->xres;
area->h = screen->yres;
draw_rect(state, area, 0);
for (i = screen->steps; i > 0; i--)
{
for (row = 1; row <= BOARDX_SIZE; row++)
{
for (col = 1; col <= BOARDY_SIZE; col++)
{
color = board[row][col];
x = (col - 1) * screen->blklen + screen->xoff;
y = (row - 1) * screen->blklen + screen->yoff;
/* Get original width and height of blocks */
area->w = screen->blklen;
area->h = screen->blklen;
/* Only do the sliding for blocks that changed */
if (prev_board[row][col] != board[row][col])
{
if (screen->dir == DIR_NONE)
{
area->x = x;
area->y = y;
}
if (screen->dir == DIR_UP)
{
area->x = x;
area->y = y + ((i - 1) * screen->stepinc);
}
if (screen->dir == DIR_DOWN)
{
area->x = x;
area->y = y - ((i - 1) * screen->stepinc);
}
if (screen->dir == DIR_LEFT)
{
area->x = x + ((i - 1) * screen->stepinc);
area->y = y;
}
if (screen->dir == DIR_RIGHT)
{
area->x = x - ((i - 1) * screen->stepinc);
area->y = y;
}
}
else
{
area->x = x;
area->y = y;
}
/* Drawn only part of block if above margin */
if (area->x > (screen->xres - 2 * screen->xoff))
{
area->x = (screen->xres - 2 * screen->xoff) + 1;
area->w = 1;
}
if (area->x < screen->xoff)
{
area->x = screen->xoff;
}
if (area->y > (screen->yres - 2 * screen->yoff))
{
area->y = (screen->yres - 2 * screen->yoff) + 1;
area->h = 1;
}
if (area->y < screen->yoff)
{
area->y = screen->yoff;
}
draw_rect(state, area, color);
}
}
area->x = 0;
area->y = 0;
area->w = screen->xres;
area->h = screen->yres;
update_screen(state, area);
usleep(100000);
}
}
/****************************************************************************
* Name: print_board
*
* Description:
* Draw the board including the user non-visible border for debugging.
****************************************************************************/
#ifdef DEBUG_SHIFT_GAME
void print_board(void)
{
int row;
int col;
for (row = 0; row < ROW; row++)
{
printf("+---+---+---+---+---+---+---+---+\n");
for (col = 0; col < COL; col++)
{
if (row == 0 || col == 0 || row == ROW - 1 || col == COL - 1)
{
printf("|>%c<", board[row][col] + 48);
}
else
{
printf("| %c ", board[row][col] + 48);
}
}
printf("|\n");
}
printf("+---+---+---+---+---+---+---+---+\n\n\n");
}
#endif
/****************************************************************************
* Name: move_board
*
* Description:
* Move the blocks (represented by numbers) to 'dir' direction (L,R,U,D).
****************************************************************************/
void move_board(int dir)
{
int row;
int row_ini;
int col;
int col_ini;
int row_dir;
int row_pos;
int col_dir;
int col_pos;
int row_lim;
int col_lim;
if (dir == DIR_UP)
{
row_ini = 0;
row_dir = 1;
row_pos = 1;
row_lim = BOARDY_SIZE + 1;
col_ini = 0;
col_dir = 1;
col_pos = 0;
col_lim = BOARDX_SIZE + 1;
}
if (dir == DIR_DOWN)
{
row_ini = BOARDY_SIZE + 1;
row_dir = -1;
row_pos = -1;
row_lim = 0;
col_ini = 0;
col_dir = 1;
col_pos = 0;
col_lim = BOARDX_SIZE + 1;
}
if (dir == DIR_RIGHT)
{
row_ini = 0;
row_dir = 1;
row_pos = 0;
row_lim = BOARDY_SIZE + 1;
col_ini = BOARDX_SIZE + 1;
col_dir = -1;
col_pos = -1;
col_lim = 0;
}
if (dir == DIR_LEFT)
{
row_ini = 0;
row_dir = 1;
row_pos = 0;
row_lim = BOARDY_SIZE + 1;
col_ini = 0;
col_dir = 1;
col_pos = 1;
col_lim = BOARDX_SIZE + 1;
}
for (row = row_ini; row != row_lim; row += row_dir)
{
for (col = col_ini; col != col_lim; col += col_dir)
{
/* Never move item if we are in the cache border */
if ((row != 0 && col != 0) &&
(row != 0 && col != BOARDX_SIZE + 1) &&
(row != BOARDY_SIZE + 1 && col != 0) &&
(row != BOARDY_SIZE + 1 && col != BOARDX_SIZE + 1))
{
if (board[row][col] == 0)
{
board[row][col] = board[row + row_pos][col + col_pos];
board[row + row_pos][col + col_pos] = 0;
}
}
}
}
}
/****************************************************************************
* Name: fill_edge
*
* Description:
* Fill the invisible border with "colored" blocks
****************************************************************************/
void fill_edge(void)
{
int i;
for (i = 0; i <= BOARDX_SIZE + 1; i++)
{
board[0][i] = (random() % GAMEMODE) + 1;
board[BOARDY_SIZE + 1][i] = (random() % GAMEMODE) + 1;
}
for (i = 0; i <= BOARDY_SIZE + 1; i++)
{
board[i][0] = (random() % GAMEMODE) + 1;
board[i][BOARDY_SIZE + 1] = (random() % GAMEMODE) + 1;
}
}
/****************************************************************************
* Name: fill_border
*
* Description:
* Fill the visible border with "colored" blocks
****************************************************************************/
void fill_border(void)
{
int i;
for (i = 1; i < BOARDX_SIZE + 1; i++)
{
board[1][i] = (random() % GAMEMODE) + 1;
board[BOARDY_SIZE][i] = (random() % GAMEMODE) + 1;
}
for (i = 1; i < BOARDY_SIZE + 1; i++)
{
board[i][1] = (random() % GAMEMODE) + 1;
board[i][BOARDY_SIZE] = (random() % GAMEMODE) + 1;
}
}
/****************************************************************************
* Name: search_board_squares
*
* Description:
* Search for squares or triples of same colors.
****************************************************************************/
int search_board_squares(void)
{
int row;
int col;
int found = 0;
for (row = 1; row < BOARDY_SIZE; row++)
{
for (col = 1; col < BOARDX_SIZE; col++)
{
if (board[row][col] != 0)
{
if (fabs(board[row][col]) == fabs(board[row][col + 1]))
{
/* Square */
if (fabs(board[row][col]) == fabs(board[row + 1][col]) &&
fabs(board[row][col + 1]) ==
fabs(board[row + 1][col + 1]))
{
found = 1;
board[row][col] = board[row][col] > 0 ?
-board[row][col] : board[row][col];
board[row][col + 1] = board[row][col + 1] > 0 ?
-board[row][col + 1] :
board[row][col + 1];
board[row + 1][col] = board[row + 1][col] > 0 ?
-board[row + 1][col] :
board[row + 1][col];
board[row + 1][col + 1] = board[row + 1][col + 1] > 0 ?
-board[row + 1][col + 1] :
board[row + 1][col + 1];
}
/* |- */
if (fabs(board[row][col]) == fabs(board[row + 1][col]))
{
found = 1;
board[row][col] = board[row][col] > 0 ?
-board[row][col] :
board[row][col];
board[row][col + 1] = board[row][col + 1] > 0 ?
-board[row][col + 1] :
board[row][col + 1];
board[row + 1][col] = board[row + 1][col] > 0 ?
-board[row + 1][col] :
board[row + 1][col];
}
/* -| */
if (fabs(board[row][col + 1]) ==
fabs(board[row + 1][col + 1]))
{
found = 1;
board[row][col] = board[row][col] > 0 ?
-board[row][col] : board[row][col];
board[row][col + 1] = board[row][col + 1] > 0 ?
-board[row][col + 1] :
board[row][col + 1];
board[row + 1][col + 1] = board[row + 1][col + 1] > 0 ?
-board[row + 1][col + 1] :
board[row + 1][col + 1];
}
}
if (fabs(board[row][col]) == fabs(board[row + 1][col]))
{
/* |_ */
if (fabs(board[row + 1][col]) ==
fabs(board[row + 1][col + 1]))
{
found = 1;
board[row][col] = board[row][col] > 0 ?
-board[row][col] : board[row][col];
board[row + 1][col] = board[row + 1][col] > 0 ?
-board[row + 1][col] :
board[row + 1][col];
board[row + 1][col + 1] = board[row + 1][col + 1] > 0 ?
-board[row + 1][col + 1] :
board[row + 1][col + 1];
}
}
}
if (board[row + 1][col] != 0)
{
/* _| */
if (fabs(board[row + 1][col]) == fabs(board[row + 1][col + 1]))
{
if (fabs(board[row + 1][col + 1]) ==
fabs(board[row][col + 1]))
{
found = 1;
board[row][col + 1] = board[row][col + 1] > 0 ?
-board[row][col + 1] :
board[row][col + 1];
board[row + 1][col] = board[row + 1][col] > 0 ?
-board[row + 1][col] :
board[row + 1][col];
board[row + 1][col + 1] = board[row + 1][col + 1] > 0 ?
-board[row + 1][col + 1] :
board[row + 1][col + 1];
}
}
}
}
}
return found;
}
/****************************************************************************
* Name: search_board_squares
*
* Description:
* Search for vertical/horizontal lines of same colours.
****************************************************************************/
int search_board_lines(void)
{
int row;
int col;
int h = 0;
int hpos = 0;
int hfound = 0;
int v = 0;
int vpos = 0;
int vfound = 0;
int found = 0;
int prev_sym = 0;
/* Search horizontal lines */
for (row = 1; row < BOARDY_SIZE + 1; row++)
{
prev_sym = board[row][1];
for (col = 1; col < BOARDX_SIZE; col++)
{
if (board[row][col] != 0)
{
if (fabs(board[row][col]) == fabs(board[row][col + 1]))
{
if (!hfound)
{
hpos = col;
hfound = 1;
prev_sym = board[row][col];
}
if (fabs(board[row][col]) == fabs(prev_sym))
{
h++;
}
}
else if (h < 2)
{
h = 0;
hpos = 1;
hfound = 0;
}
}
}
if (h >= 2)
{
for (int i = hpos; i <= hpos + h; i++)
{
board[row][i] = board[row][i] > 0 ?
-board[row][i] : board[row][i];
found = 1;
}
}
h = 0;
hpos = 1;
hfound = 0;
}
/* Search vertical lines */
for (col = 1; col < BOARDX_SIZE + 1; col++)
{
prev_sym = board[1][col];
for (row = 1; row < BOARDY_SIZE; row++)
{
if (board[row][col] != 0)
{
if (fabs(board[row][col]) == fabs(board[row + 1][col]))
{
if (!vfound)
{
vpos = row;
vfound = 1;
prev_sym = board[row][col];
}
if (fabs(board[row][col]) == fabs(prev_sym))
{
v++;
}
}
else if (v < 2)
{
v = 0;
vpos = 1;
vfound = 0;
}
}
}
if (v >= 2)
{
for (int i = vpos; i <= vpos + v; i++)
{
board[i][col] = board[i][col] > 0 ?
-board[i][col] : board[i][col];
found = 1;
}
}
v = 0;
vpos = 1;
vfound = 0;
}
return found;
}
/****************************************************************************
* Name: check_board
*
* Description:
* Verify if there are match lines/squares and remove them
****************************************************************************/
int check_board(void)
{
int found = 0;
int row;
int col;
found = search_board_lines();
found |= search_board_squares();
/* Remove all negative values */
for (row = 0; row < ROW; row++)
{
for (col = 0; col < COL; col++)
{
if (board[row][col] < 0)
{
board[row][col] = 0;
}
}
}
return found;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* shift_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
FAR const char *fbdev = g_default_fbdev;
struct game_screen_s screen;
struct input_state_s input;
struct screen_state_s state;
struct fb_area_s area;
int ret;
/* Open the framebuffer driver */
state.fd_fb = open(fbdev, O_RDWR);
if (state.fd_fb < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: Failed to open %s: %d\n", fbdev, errcode);
return EXIT_FAILURE;
}
/* Get the characteristics of the framebuffer */
ret = ioctl(state.fd_fb, FBIOGET_VIDEOINFO,
(unsigned long)((uintptr_t)&state.vinfo));
if (ret < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: ioctl(FBIOGET_VIDEOINFO) failed: %d\n",
errcode);
close(state.fd_fb);
return EXIT_FAILURE;
}
printf("VideoInfo:\n");
printf(" fmt: %u\n", state.vinfo.fmt);
printf(" xres: %u\n", state.vinfo.xres);
printf(" yres: %u\n", state.vinfo.yres);
printf(" nplanes: %u\n", state.vinfo.nplanes);
/* Setup the screen information */
screen.xres = state.vinfo.xres > state.vinfo.yres ?
state.vinfo.yres : state.vinfo.xres;
screen.yres = state.vinfo.yres > state.vinfo.xres ?
state.vinfo.xres : state.vinfo.yres;
screen.xoff = (screen.xres % NCOLORS) / 2;
screen.yoff = (screen.yres % NCOLORS) / 2;
screen.steps = 2;
screen.stepinc = 1;
screen.blklen = (screen.xres / NCOLORS);
screen.ncolors = NCOLORS;
/* Get the display planeinfo */
ret = ioctl(state.fd_fb, FBIOGET_PLANEINFO,
(unsigned long)((uintptr_t)&state.pinfo));
if (ret < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: ioctl(FBIOGET_PLANEINFO) failed: %d\n",
errcode);
close(state.fd_fb);
return EXIT_FAILURE;
}
printf("PlaneInfo (plane 0):\n");
printf(" fbmem: %p\n", state.pinfo.fbmem);
printf(" fblen: %lu\n", (unsigned long)state.pinfo.fblen);
printf(" stride: %u\n", state.pinfo.stride);
printf(" display: %u\n", state.pinfo.display);
printf(" bpp: %u\n", state.pinfo.bpp);
state.fbmem = mmap(NULL, state.pinfo.fblen, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_FILE, state.fd_fb, 0);
if (state.fbmem == MAP_FAILED)
{
int errcode = errno;
fprintf(stderr, "ERROR: ioctl(FBIOGET_PLANEINFO) failed: %d\n",
errcode);
close(state.fd_fb);
return EXIT_FAILURE;
}
printf("Mapped FB: %p\n", state.fbmem);
/* Fill the edge with random values */
fill_edge();
fill_border();
/* Draw the empty board to user */
draw_board(&state, &area, &screen);
dev_input_init(&input);
while (1)
{
ret = dev_read_input(&input);
screen.dir = input.dir;
#ifdef DEBUG_SHIFT_GAME
printf("Before moving:\n");
print_board();
usleep(2000000);
#endif
/* Save a copy of the board before moving to new position */
memcpy(prev_board, board, (sizeof(int) * ROW * COL));
move_board(screen.dir);
draw_board(&state, &area, &screen);
#ifdef DEBUG_SHIFT_GAME
printf("After moving:\n");
print_board();
usleep(1000000);
#endif
/* Save a copy of the board after moving the pieces */
memcpy(prev_board, board, (sizeof(int) * ROW * COL));
screen.dir = DIR_NONE;
/* If we found bricks with same colors */
if (check_board() == 1)
{
int i;
/* Lets do a blinking effect */
for (i = 0; i < 3; i++)
{
/* Draw the board with the pieces */
memcpy(board, prev_board, (sizeof(int) * ROW * COL));
draw_board(&state, &area, &screen);
usleep(100000);
/* Draw the board without the pieces */
check_board();
draw_board(&state, &area, &screen);
usleep(100000);
}
usleep(500000);
}
#ifdef DEBUG_SHIFT_GAME
printf("After checking:\n");
print_board();
usleep(1000000);
#endif
usleep(1000000);
/* Add random pieces in the not visible border */
fill_edge();
}
return 0;
}
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