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Wormlet: Fix food and argh possibly overlapping each other.

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Flyspray: FS#10589
Author: Asael Reiter

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22724 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2009-09-17 21:05:35 +00:00
parent d270452402
commit ee28c8d711
1 changed files with 23 additions and 23 deletions
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46
apps/plugins/wormlet.c
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@ -348,6 +348,8 @@ CONFIG_KEYPAD == MROBE500_PAD
#define COLOR_BG LCD_RGBPACK(181, 199, 231)
#endif
#define CHECK_SQUARE_COLLISION(x1,y1,s1,x2,y2,s2) (x1+s1>x2)&&(x2+s2>x1)&&(y1+s1>y2)&&(y2+s2>y1)
/**
* All the properties that a worm has.
*/
@ -830,21 +832,19 @@ static void make_food(int index)
the entire food lies within the FIELD */
x = rb->rand() % (FIELD_RECT_WIDTH - food_size);
y = rb->rand() % (FIELD_RECT_HEIGHT - food_size);
collisionDetected = false;
/* Ensure that the new food doesn't collide with any
existing foods or arghs.
If one or more corners of the new food hit any existing
If the new food hit any existing
argh or food a collision is detected.
*/
collisionDetected =
food_collision(x , y ) >= 0 ||
food_collision(x , y + food_size - 1) >= 0 ||
food_collision(x + food_size - 1, y ) >= 0 ||
food_collision(x + food_size - 1, y + food_size - 1) >= 0 ||
argh_collision(x , y ) >= 0 ||
argh_collision(x , y + food_size - 1) >= 0 ||
argh_collision(x + food_size - 1, y ) >= 0 ||
argh_collision(x + food_size - 1, y + food_size - 1) >= 0;
for (i=0; i<MAX_FOOD && !collisionDetected; i++) {
collisionDetected = CHECK_SQUARE_COLLISION(x,y,food_size,foodx[i],foody[i],food_size);
}
for (i=0; i<argh_count && !collisionDetected; i++) {
collisionDetected = CHECK_SQUARE_COLLISION(x,y,food_size,arghx[i],arghy[i],argh_size);
}
/* use coordinates for further testing */
foodx[index] = x;
@ -853,7 +853,9 @@ static void make_food(int index)
/* now test wether we accidently hit the worm with food ;) */
i = 0;
for (i = 0; i < worm_count && !collisionDetected; i++) {
collisionDetected |= worm_food_collision(&worms[i], index);
collisionDetected = worm_food_collision(&worms[i], index);
}
}
while (collisionDetected);
@ -919,21 +921,19 @@ static void make_argh(int index)
the entire food lies within the FIELD */
x = rb->rand() % (FIELD_RECT_WIDTH - argh_size);
y = rb->rand() % (FIELD_RECT_HEIGHT - argh_size);
collisionDetected = false;
/* Ensure that the new argh doesn't intersect with any
existing foods or arghs.
If one or more corners of the new argh hit any existing
If the new argh hit any existing
argh or food an intersection is detected.
*/
collisionDetected =
food_collision(x , y ) >= 0 ||
food_collision(x , y + argh_size - 1) >= 0 ||
food_collision(x + argh_size - 1, y ) >= 0 ||
food_collision(x + argh_size - 1, y + argh_size - 1) >= 0 ||
argh_collision(x , y ) >= 0 ||
argh_collision(x , y + argh_size - 1) >= 0 ||
argh_collision(x + argh_size - 1, y ) >= 0 ||
argh_collision(x + argh_size - 1, y + argh_size - 1) >= 0;
for (i=0; i<MAX_FOOD && !collisionDetected; i++) {
collisionDetected = CHECK_SQUARE_COLLISION(x,y,argh_size,foodx[i],foody[i],food_size);
}
for (i=0; i<argh_count && !collisionDetected; i++) {
collisionDetected = CHECK_SQUARE_COLLISION(x,y,argh_size,arghx[i],arghy[i],argh_size);
}
/* use the candidate coordinates to make a real argh */
arghx[index] = x;