static void dla_plot(int x, int y, uint8_t r,uint8_t g , uint8_t b, float br)
{
uint8_t o_red = 0;
uint8_t o_green = 0;
uint8_t o_blue = 0;
getLedXY(x,y,&o_red,&o_green,&o_blue);
r=br*r+((1-br)*o_red);
g=br*g+((1-br)*o_green);
b=br*b+((1-br)*o_blue);
setLedXY(x, y, r,g,b);
}
static int try_go(struct racer *r, int dir) {
int dx = 0, dy = 0;
switch(dir) {
case DIR_UP:
dy = -1;
break;
case DIR_LEFT:
dx = 1;
break;
case DIR_DOWN:
dy = 1;
break;
case DIR_RIGHT:
dx = -1;
break;
}
int nx = r->x + dx, ny = r->y + dy;
if (nx < 0 || nx >= LED_WIDTH || ny < 0 || ny >= LED_HEIGHT)
return 0;
uint8_t rgb[3];
getLedXY(nx, ny, rgb, rgb + 1, rgb + 2);
int success = 0;
switch(r->mode) {
case MODE_ALIVE:
success = rgb[0] < 128;
break;
case MODE_ZOMBIE:
success = rgb[0] > 127;
break;
}
if (success) {
r->x = nx;
r->y = ny;
r->dir = dir;
}
return success;
}
