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* xobox.c: - Speed it up (makes it play without lag on iPod Video).

Browse source 
- Fix wrong qix angle after hiting wall.
           - Fix area with qix being filled if qix was on the wall (during rebound).
           - Fix rendering of qixes when they overlap.
           - Change the player and qix bitmaps so that they're centered on the 8x8 block.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13543 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Antoine Cellerier 2007-06-03 17:34:23 +00:00
parent 673e323f8c
commit b5d5f7fb2a
1 changed files with 240 additions and 202 deletions
Download patch file Download diff file Expand all files Collapse all files

442
apps/plugins/xobox.c
View file

@ -8,6 +8,7 @@
* $Id$
*
* Copyright (C) 2006 Eli Sherer
* 2007 Antoine Cellerier
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
@ -107,18 +108,35 @@ PLUGIN_HEADER
#define MOVE_LT 3 /* 2 */
#define MOVE_RT 4
#define MOVE_UUR 0 /* ball movement (12 ways) */
#define MOVE_UR 1
#define MOVE_URR 2
#define MOVE_DRR 3 /* UUL110UUR */
#define MOVE_DR 4 /* UL10 1UR */
#define MOVE_DDR 5 /* ULL9 . 2URR */
#define MOVE_DDL 6 /* DLL8 3DRR */
#define MOVE_DL 7 /* DL7 4DR */
#define MOVE_DLL 8 /* DDL6 5DDR */
#define MOVE_ULL 9
#define MOVE_UL 10
#define MOVE_UUL 11
/* ball movement (12 ways) */
/* UUL UR */
/* UL UR */
/* ULL . URR */
/* DLL DRR */
/* DL DR */
/* DDL DDR */
#define DIR_UU (1<<7)
#define DIR_U (1<<6)
#define DIR_RR (1<<5)
#define DIR_R (1<<4)
#define DIR_DD (1<<3)
#define DIR_D (1<<2)
#define DIR_LL (1<<1)
#define DIR_L (1<<0)
#define MOVE_UUR ( DIR_UU | DIR_R )
#define MOVE_UR ( DIR_U | DIR_R )
#define MOVE_URR ( DIR_U | DIR_RR )
#define MOVE_DRR ( DIR_D | DIR_RR )
#define MOVE_DR ( DIR_D | DIR_R )
#define MOVE_DDR ( DIR_DD | DIR_R )
#define MOVE_DDL ( DIR_DD | DIR_L )
#define MOVE_DL ( DIR_D | DIR_L )
#define MOVE_DLL ( DIR_D | DIR_LL )
#define MOVE_ULL ( DIR_U | DIR_LL )
#define MOVE_UL ( DIR_U | DIR_L )
#define MOVE_UUL ( DIR_UU | DIR_L )
#define CUBE_SIZE 8 /* 8x22=176 */
#define STARTING_QIXES 2
@ -160,39 +178,41 @@ PLUGIN_HEADER
static struct plugin_api *rb;
static bool quit = false;
static unsigned short board[BOARD_H][BOARD_W],
static unsigned int board[BOARD_H][BOARD_W],
testboard[BOARD_H][BOARD_W], boardcopy[BOARD_H][BOARD_W];
/*
00001000 0x08 - 01110111 0x77
00011100 0x1c - 01110111 0x77
00111110 0x3e - 01100011 0x63
01111111 0x7f - 00000000 0x00
00111110 0x3e - 01100011 0x63
00011100 0x1c - 01110111 0x77
00001000 0x08 - 01110111 0x77
00000000 0x00 - 00000000 0x00
00011000 0x18 - 11100111 0xe7
00111100 0x3c - 11100111 0xe7
01111110 0x7e - 11000011 0xc3
11111111 0xff - 00000000 0x00
11111111 0xff - 00000000 0x00
01111110 0x7e - 11000011 0xc3
00111100 0x3c - 11100111 0xe7
00011000 0x18 - 11100111 0xe7
*/
const unsigned char pics[2][8] = {
{0x08, 0x1c, 0x3e, 0x7f, 0x3e, 0x1c, 0x08, 0x00}, /* Alien (QIX) */
{0x77, 0x77, 0x63, 0x00, 0x63, 0x77, 0x77, 0x00} /* Player (XONIX) */
{0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x3c, 0x18}, /* Alien (QIX) */
{0xe7, 0xe7, 0xc3, 0x00, 0x00, 0xc3, 0xe7, 0xe7} /* Player (XONIX) */
};
static struct qix
{
short velocity; /* velocity */
short x, y; /* position on screen */
short angle; /* angle */
int velocity; /* velocity */
int x, y; /* position on screen */
int angle; /* angle */
} qixes[MAX_QIXES]; /* black_qix */
static struct splayer
{
short i, j; /* position on board */
short move, score, level, lives;
int i, j; /* position on board */
int move, score, level, lives;
bool drawing;
bool gameover;
} player;
static int percentage_cache;
/*************************** STACK STUFF **********************/
/* the stack */
@ -204,8 +224,13 @@ static struct pos
static int stackPointer;
#define div(a,b) (((a)/(b)))
#if CUBE_SIZE == 8
# define pos(a) ((a)>>3)
#else
# define pos(a) div((a),CUBE_SIZE)
#endif
static bool pop (struct pos *p)
static inline bool pop (struct pos *p)
{
if (stackPointer > 0) {
p->x = stack[stackPointer].x;
@ -216,7 +241,7 @@ static bool pop (struct pos *p)
return false; /* SE */
}
static bool push (struct pos *p)
static inline bool push (struct pos *p)
{
if (stackPointer < STACK_SIZE - 1) {
stackPointer++;
@ -227,47 +252,38 @@ static bool push (struct pos *p)
return false; /* SOF */
}
static void emptyStack (void)
static inline void emptyStack (void)
{
stackPointer = 0;
/* int x, y;
while(pop(&x, &y)); */
}
/*********************** END OF STACK STUFF *********************/
/* calculate the new x coordinate of the ball according to angle and speed */
static int get_newx (int x, int len, int deg)
static inline int get_newx (int x, int len, int deg)
{
int dx;
if ((deg == MOVE_DRR) || (deg == MOVE_URR))
dx = 2;
else if ((deg == MOVE_DDR) || (deg == MOVE_UUR) || (deg == MOVE_DR)
|| (deg == MOVE_UR))
dx = 1;
else if ((deg == MOVE_DDL) || (deg == MOVE_UUL) || (deg == MOVE_DL)
|| (deg == MOVE_UL))
dx = -1;
else
dx = -2;
return x + dx * len;
if (deg & DIR_R)
return x + len;
else if (deg & DIR_L)
return x - len;
else if (deg & DIR_RR)
return x + len * 2;
else /* (def & DIR_LL) */
return x - len * 2;
}
/* calculate the new y coordinate of the ball according to angle and speed */
static int get_newy (int y, int len, int deg)
static inline int get_newy (int y, int len, int deg)
{
int dy;
if ((deg == MOVE_DRR) || (deg == MOVE_DLL) || (deg == MOVE_DR)
|| (deg == MOVE_DL))
dy = 1;
else if ((deg == MOVE_DDR) || (deg == MOVE_DDL))
dy = 2;
else if ((deg == MOVE_UUR) || (deg == MOVE_UUL))
dy = -2;
else
dy = -1;
return y + dy * len;
if (deg & DIR_D)
return y + len;
else if (deg & DIR_U)
return y - len;
else if (deg & DIR_DD)
return y + len * 2;
else /* (deg & DIR_UU) */
return y - len * 2;
}
/* make random function get it's value from the device ticker */
@ -285,10 +301,10 @@ static int t_rand (int range)
/* initializes the test help board */
static void init_testboard (void)
{
int i, j; /* testboard */
int j; /* testboard */
for (j = 0; j < BOARD_H; j++)
for (i = 0; i < BOARD_W; i++)
testboard[j][i] = UNCHECKED;
/* UNCHEKED == (int)0 */
rb->memset( testboard[j], 0, BOARD_W * sizeof( int ) );
}
/* initializes the game board on with the player,qix's and black qix */
@ -315,7 +331,25 @@ static void init_board (void)
BOARD_Y + t_rand (((BOARD_H - 6) * CUBE_SIZE) - 2 * CUBE_SIZE) +
3 * CUBE_SIZE;
qixes[j].angle = t_rand (12);
switch( t_rand (12) ) {
#define ANGLE_CASE(a,b) \
case a: \
qixes[j].angle = MOVE_ ## b; \
break;
ANGLE_CASE(0,UR);
ANGLE_CASE(1,URR);
ANGLE_CASE(2,DRR);
ANGLE_CASE(3,DR);
ANGLE_CASE(4,DDR);
ANGLE_CASE(5,DDL);
ANGLE_CASE(6,DL);
ANGLE_CASE(7,DLL);
ANGLE_CASE(8,ULL);
ANGLE_CASE(9,UL);
ANGLE_CASE(10,UUL);
ANGLE_CASE(11,UUR);
#undef ANGLE_CASE
}
}
/*black_qix.velocity=1;
black_qix.x=BOARD_X+(BOARD_W*CUBE_SIZE)/2-CUBE_SIZE/2;
@ -325,6 +359,8 @@ static void init_board (void)
player.drawing = false;
player.i = BOARD_W / 2;
player.j = 1;
percentage_cache = 0;
}
/* calculates the percentage of the screen filling */
@ -370,7 +406,7 @@ static void refresh_board (void)
rb->lcd_set_background (CLR_LTBLUE);
rb->snprintf (str, sizeof (str), "Level %d", player.level + 1);
rb->lcd_putsxy (BOARD_X, BOARD_Y, str);
rb->snprintf (str, sizeof (str), "%d%%", percentage ());
rb->snprintf (str, sizeof (str), "%d%%", percentage_cache);
rb->lcd_putsxy (BOARD_X + CUBE_SIZE * BOARD_W - 24, BOARD_Y, str);
rb->snprintf (str, sizeof (str), "Score: %d", player.score);
rb->lcd_putsxy (BOARD_X, BOARD_Y + CUBE_SIZE * BOARD_H - 8, str);
@ -383,10 +419,12 @@ static void refresh_board (void)
rb->lcd_mono_bitmap (pics[PIC_PLAYER], player.i * CUBE_SIZE + BOARD_X,
player.j * CUBE_SIZE + BOARD_Y, CUBE_SIZE, CUBE_SIZE);
rb->lcd_set_background (EMPTIED);
rb->lcd_set_drawmode (DRMODE_FG);
rb->lcd_set_foreground (LCD_WHITE);
for (j = 0; j < player.level + STARTING_QIXES; j++)
rb->lcd_mono_bitmap (pics[PIC_QIX], qixes[j].x + BOARD_X,
qixes[j].y + BOARD_Y, CUBE_SIZE, CUBE_SIZE);
rb->lcd_set_drawmode (DRMODE_SOLID);
rb->lcd_set_foreground (LCD_BLACK);
rb->lcd_update ();
@ -394,7 +432,7 @@ static void refresh_board (void)
static inline int infested_area (int i, int j)
{
struct pos p, p1, p2, p3, p4;
struct pos p;
bool hit = false;
p.x = i;
p.y = j;
@ -407,37 +445,41 @@ static inline int infested_area (int i, int j)
testboard[p.y][p.x] = CHECKED;
if (hit)
return true; /*save some time and space */
p1.x = p.x + 1;
p1.y = p.y;
p2.x = p.x - 1;
p2.y = p.y;
p3.x = p.x;
p3.y = p.y + 1;
p4.x = p.x;
p4.y = p.y - 1;
if ((p1.x < BOARD_W) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] != FILLED)
if (!push (&p1))
return -1;
if ((p2.x >= 0) && (testboard[p2.y][p2.x] == UNCHECKED))
if (board[p2.y][p2.x] != FILLED)
if (!push (&p2))
return -1;
if ((p3.y < BOARD_H) && (testboard[p3.y][p3.x] == UNCHECKED))
if (board[p3.y][p3.x] != FILLED)
if (!push (&p3))
return -1;
if ((p4.y >= 0) && (testboard[p4.y][p4.x] == UNCHECKED))
if (board[p4.y][p4.x] != FILLED)
if (!push (&p4))
return -1;
{
struct pos p1 = { p.x+1, p.y };
if ((p1.x < BOARD_W) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] != FILLED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x-1, p.y };
if ((p1.x >= 0) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] != FILLED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x, p.y+1 };
if ((p1.y < BOARD_H) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] != FILLED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x, p.y-1 };
if ((p1.y >= 0) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] != FILLED)
if (!push (&p1))
return -1;
}
}
return (hit ? 1 : 0);
}
static inline int fill_area (int i, int j)
{
struct pos p, p1, p2, p3, p4;
struct pos p;
p.x = i;
p.y = j;
emptyStack ();
@ -447,30 +489,34 @@ static inline int fill_area (int i, int j)
while (pop (&p)) {
board[p.y][p.x] = FILLED;
testboard[p.y][p.x] = CHECKED;
p1.x = p.x + 1;
p1.y = p.y;
p2.x = p.x - 1;
p2.y = p.y;
p3.x = p.x;
p3.y = p.y + 1;
p4.x = p.x;
p4.y = p.y - 1;
if ((p1.x < BOARD_W) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] == EMPTIED)
if (!push (&p1))
return -1;
if ((p2.x >= 0) && (testboard[p2.y][p2.x] == UNCHECKED))
if (board[p2.y][p2.x] == EMPTIED)
if (!push (&p2))
return -1;
if ((p3.y < BOARD_H) && (testboard[p3.y][p3.x] == UNCHECKED))
if (board[p3.y][p3.x] == EMPTIED)
if (!push (&p3))
return -1;
if ((p4.y >= 0) && (testboard[p4.y][p4.x] == UNCHECKED))
if (board[p4.y][p4.x] == EMPTIED)
if (!push (&p4))
return -1;
{
struct pos p1 = { p.x+1, p.y };
if ((p1.x < BOARD_W) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] == EMPTIED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x-1, p.y };
if ((p1.x >= 0) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] == EMPTIED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x, p.y+1 };
if ((p1.y < BOARD_H) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] == EMPTIED)
if (!push (&p1))
return -1;
}
{
struct pos p1 = { p.x, p.y-1 };
if ((p1.y >= 0) && (testboard[p1.y][p1.x] == UNCHECKED))
if (board[p1.y][p1.x] == EMPTIED)
if (!push (&p1))
return -1;
}
}
return 1;
}
@ -480,7 +526,7 @@ static inline int fill_area (int i, int j)
static void complete_trail (int fill)
{
int i, j, ret;
for (j = 0; j < BOARD_H; j++)
for (j = 0; j < BOARD_H; j++) {
for (i = 0; i < BOARD_W; i++) {
if (board[j][i] == TRAIL) {
if (fill)
@ -488,30 +534,34 @@ static void complete_trail (int fill)
else
board[j][i] = EMPTIED;
}
boardcopy[j][i] = board[j][i];
/*boardcopy[j][i] = board[j][i];*/
}
rb->memcpy( boardcopy[j], board[j], BOARD_W * sizeof( int ) );
}
if (fill) {
for (i = 0; i < player.level + STARTING_QIXES; i++) /* add qixes to board */
boardcopy[div(qixes[i].y - BOARD_Y, CUBE_SIZE)]
[div(qixes[i].x - BOARD_X, CUBE_SIZE)] = QIX;
boardcopy[pos(qixes[i].y - BOARD_Y)]
[pos(qixes[i].x - BOARD_X)] = QIX;
init_testboard();
for (j = 1; j < BOARD_H - 1; j++)
for (i = 0; i < BOARD_W - 0; i++)
if (board[j][i] != FILLED) {
if (board[j][i] != FILLED && testboard[j][i] != CHECKED /* testboard[i][j] == CHECKED means that this is part of an infested area tested on the previous run */ ) {
ret = infested_area (i, j);
if (ret < 0 || ( ret == 0 && fill_area (i, j) < 0 ) )
quit = true;
}
percentage_cache = percentage();
}
rb->button_clear_queue();
}
/* returns the color the real pixel(x,y) on the lcd is pointing at */
static unsigned short getpixel (int x, int y)
static inline unsigned int getpixel (int x, int y)
{
int a = div (x - BOARD_X, CUBE_SIZE), b = div (y - BOARD_Y, CUBE_SIZE);
const int a = pos (x - BOARD_X), b = pos (y - BOARD_Y);
if ((a > 0) && (a < BOARD_W) && (b > 0) && (b < BOARD_H)) /* if inside board */
return board[b][a];
else
@ -523,7 +573,7 @@ static unsigned short getpixel (int x, int y)
are a trail (cause it's a lose life situation) and 2nd | |
if it's filled so it needs to bounce. *____*
*/
static inline unsigned short next_hit (int newx, int newy)
static inline unsigned int next_hit (int newx, int newy)
{
if ((getpixel (newx, newy) == TRAIL)
|| (getpixel (newx, newy + CUBE_SIZE - 1) == TRAIL)
@ -540,33 +590,6 @@ static inline unsigned short next_hit (int newx, int newy)
return EMPTIED;
}
/* returns true if the (side) of the block -***-
starting from (newx,newy) has any filled pixels * *
-***-
*/
static bool line_check (int newx, int newy, int side)
{
int i = 0;
bool filled = false;
for (i = 3; ((i < CUBE_SIZE - 3) && (!filled)); i++) {
switch (side) {
case MOVE_LT:
filled = getpixel (newx, newy + i) == FILLED;
break;
case MOVE_RT:
filled = getpixel (newx + CUBE_SIZE - 1, newy + i) == FILLED;
break;
case MOVE_UP:
filled = getpixel (newx + i, newy) == FILLED;
break;
case MOVE_DN:
filled = getpixel (newx + i, newy + CUBE_SIZE - 1) == FILLED;
break;
}
}
return filled;
}
static void die (void)
{
player.lives--;
@ -583,10 +606,51 @@ static void die (void)
}
}
static void move_qix (struct qix *q)
/* returns true if the (side) of the block -***-
starting from (newx,newy) has any filled pixels * *
-***-
*/
static inline bool line_check_lt (int newx, int newy)
{
int newx, newy, dir;
unsigned short nexthit;
int i = 0;
for (i = 3; i < CUBE_SIZE - 3; i++) {
if (getpixel (newx, newy + i) != FILLED)
return false;
}
return true;
}
static inline bool line_check_rt (int newx, int newy)
{
int i = 0;
for (i = 3; i < CUBE_SIZE - 3; i++) {
if (getpixel (newx + CUBE_SIZE - 1, newy + i) != FILLED)
return false;
}
return true;
}
static inline bool line_check_up (int newx, int newy)
{
int i = 0;
for (i = 3; i < CUBE_SIZE - 3; i++) {
if (getpixel (newx + i, newy) != FILLED)
return false;
}
return true;
}
static inline bool line_check_dn (int newx, int newy)
{
int i = 0;
for (i = 3; i < CUBE_SIZE - 3; i++) {
if (getpixel (newx + i, newy + CUBE_SIZE - 1) != FILLED)
return false;
}
return true;
}
static inline void move_qix (struct qix *q)
{
int newx, newy;
unsigned int nexthit;
newx = get_newx (q->x, q->velocity, q->angle);
newy = get_newy (q->y, q->velocity, q->angle);
nexthit = next_hit (newx, newy);
@ -594,55 +658,29 @@ static void move_qix (struct qix *q)
q->x = newx;
q->y = newy;
} else if (nexthit == FILLED) {
dir = q->angle;
switch (dir) {
case MOVE_URR:
case MOVE_UUR:
case MOVE_UR: /* up-right (can hit ceiling or right wall) */
if (line_check (newx, newy, MOVE_UP)
&& line_check (newx, newy, MOVE_RT))
q->angle = q->angle + 6;
else if (line_check (newx, newy, MOVE_UP))
q->angle = 5 - q->angle; /* 5=180/(360/12)-1 */
else
q->angle = 11 - q->angle; /* 11=360/(360/12)-1 */
break;
case MOVE_ULL:
case MOVE_UUL:
case MOVE_UL: /* up-left (can hit ceiling or left wall) */
if (line_check (newx, newy, MOVE_UP)
&& line_check (newx, newy, MOVE_LT))
q->angle = q->angle - 6;
else if (line_check (newx, newy, MOVE_UP))
q->angle = 17 - q->angle; /* 17=540/(360/12)-1 */
else
q->angle = 11 - q->angle; /* 11=360/(360/12)-1 */
break;
case MOVE_DLL:
case MOVE_DDL:
case MOVE_DL: /* down-left (can hit floor or left wall) */
if (line_check (newx, newy, MOVE_DN)
&& line_check (newx, newy, MOVE_LT))
q->angle = q->angle - 6;
else if (line_check (newx, newy, MOVE_DN))
q->angle = 17 - q->angle; /* 17=540/(360/12)-1 */
else
q->angle = 11 - q->angle; /* 11=360/(360/12)-1 */
break;
case MOVE_DRR:
case MOVE_DDR:
case MOVE_DR: /* down-right (can hit floor or right wall) */
if (line_check (newx, newy, MOVE_DN)
&& line_check (newx, newy, MOVE_RT))
q->angle = q->angle + 6;
else if (line_check (newx, newy, MOVE_DN))
q->angle = 5 - q->angle; /* 5=180/(360/12)-1 */
else
q->angle = 11 - q->angle; /* 11=360/(360/12)-1 */
break;
}
q->x = newx;
q->y = newy;
const int a = q->angle;
q->angle =
((a&(DIR_UU|DIR_U))
? (line_check_up (newx, newy) ? ((a&(DIR_UU|DIR_U))>>4)
: (a&(DIR_UU|DIR_U)))
: 0)
|
((a&(DIR_RR|DIR_R))
? (line_check_rt (newx, newy) ? ((a&(DIR_RR|DIR_R))>>4)
: (a&(DIR_RR|DIR_R)))
: 0)
|
((a&(DIR_DD|DIR_D))
? (line_check_dn (newx, newy) ? ((a&(DIR_DD|DIR_D))<<4)
: (a&(DIR_DD|DIR_D)))
: 0)
|
((a&(DIR_LL|DIR_L))
? (line_check_lt (newx, newy) ? ((a&(DIR_LL|DIR_L))<<4)
: (a&(DIR_LL|DIR_L)))
: 0);
q->x = get_newx (q->x, q->velocity, q->angle);
q->y = get_newy (q->y, q->velocity, q->angle);
} else if (nexthit == TRAIL) {
die();
}
@ -699,7 +737,7 @@ static inline void move_board (void)
player.i = newi;
player.j = newj;
}
j = percentage ();
j = percentage_cache;
if (j > 75) { /* finished level */
rb->splash (HZ * 2, "Level %d finished", player.level+1);
player.score += j;
@ -836,7 +874,7 @@ enum plugin_status plugin_start (struct plugin_api *api, void *parameter)
/* Permanently enable the backlight (unless the user has turned it off) */
if (rb->global_settings->backlight_timeout > 0)
rb->backlight_set_timeout (1);
quit = false;
randomize ();