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Only draw bullets on screen.

This commit is contained in:
Steve 2015-11-13 22:51:22 +00:00
parent ec72a5dd40
commit 7df9ad09e2
2 changed files with 20 additions and 2 deletions
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21
src/battle/bullets.c
View File

@ -24,6 +24,7 @@ static void huntTarget(Bullet *b);
static void checkCollisions(Bullet *b);
static Bullet bulletDef[BT_MAX];
static Bullet *bulletsToDraw[MAX_BULLETS_TO_DRAW];
void initBulletDefs(void)
{
@ -58,9 +59,12 @@ void initBulletDefs(void)
void doBullets(void)
{
int i = 0;
Bullet *b;
Bullet *prev = &battle.bulletHead;
memset(bulletsToDraw, 0, sizeof(Bullet*) * MAX_BULLETS_TO_DRAW);
for (b = battle.bulletHead.next ; b != NULL ; b = b->next)
{
b->x += b->dx;
@ -86,6 +90,18 @@ void doBullets(void)
free(b);
b = prev;
}
else
{
if (collision(b->x - b->w - battle.camera.x, b->y - b->h - battle.camera.y, b->w * 2, b->h * 2, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT))
{
bulletsToDraw[i++] = b;
if (i >= MAX_BULLETS_TO_DRAW)
{
printf("Too many bullets to draw\n");
exit(1);
}
}
}
prev = b;
}
@ -98,7 +114,7 @@ static void checkCollisions(Bullet *b)
candidates = getAllEntsWithin(b->x, b->y, b->w, b->h, NULL);
for (i = 0, e = candidates[i] ; e != NULL ; i++, e = candidates[i])
for (i = 0, e = candidates[i] ; e != NULL ; e = candidates[++i])
{
if (e->type == ET_FIGHTER)
{
@ -141,9 +157,10 @@ static void checkCollisions(Bullet *b)
void drawBullets(void)
{
int i;
Bullet *b;
for (b = battle.bulletHead.next ; b != NULL ; b = b->next)
for (i = 0, b = bulletsToDraw[i] ; b != NULL ; b = bulletsToDraw[++i])
{
blitRotated(b->texture, b->x - battle.camera.x, b->y - battle.camera.y, b->angle);
}

1
src/battle/bullets.h
View File

@ -26,6 +26,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#define TURN_SPEED 2
#define TURN_THRESHOLD 3
#define MAX_BULLETS_TO_DRAW 512
extern SDL_Texture *getTexture(char *filename);
extern void blitRotated(SDL_Texture *texture, int x, int y, int angle);