Add starfield loadable

This commit is contained in:
Stefan `Sec` Zehl 2011-08-12 20:17:11 +02:00
parent d8d056e5ef
commit 39efe08dab
1 changed files with 73 additions and 0 deletions

View File

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#include <sysinit.h>
#include "basic/basic.h"
#include "basic/config.h"
#include "lcd/lcd.h"
#include "lcd/print.h"
#include "usetable.h"
#define NUM_STARS 150
typedef struct {
short x, y, z, speed;
} s_star;
static s_star stars[NUM_STARS];
void init_star(s_star *star, int z);
void ram(void)
{
short centerx = RESX >> 1;
short centery = RESY >> 1;
short i;
for (i = 0; i < NUM_STARS; i++) {
init_star(stars + i, i + 1);
}
while(getInputRaw()==BTN_NONE){
lcdClear();
for (i = 0; i < NUM_STARS; i++) {
stars[i].z -= stars[i].speed;
if (stars[i].z <= 0)
init_star(stars + i, i + 1);
short tempx = ((stars[i].x * 30) / stars[i].z) + centerx;
short tempy = ((stars[i].y * 30) / stars[i].z) + centery;
if (tempx < 0 || tempx > RESX - 1 || tempy < 0 || tempy > RESY - 1) {
init_star(stars + i, i + 1);
continue;
}
lcdSetPixel(tempx, tempy, 1);
if (stars[i].z < 50) {
lcdSetPixel(tempx + 1, tempy, 1);
}
if (stars[i].z < 20) {
lcdSetPixel(tempx, tempy + 1, 1);
lcdSetPixel(tempx + 1, tempy + 1, 1);
}
}
lcdRefresh();
delayms_queue_plus(50,0);
}
}
void init_star(s_star *star, int z)
{
star->x = (getRandom() % RESX) - (RESX >> 1);
star->y = (getRandom() % RESY) - (RESY >> 1);
star->z = z;
star->speed = (getRandom() % 4) + 1;
return;
}