crashtest-r0ket/firmware/l0dable/nick_w0rpcore.c

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2012-01-19 00:32:05 +00:00
/*
* This l0dable by Benedikt Roth and Stefan Tomanek serves as your main
* viewscreen, displaying your nickname the way you want it, and lets the
* stars zoom by. You can accelerate your vessel by pushing the joystick
* upwards or bring it to a halt by pressing it down - leaving your ship
* drifting in the endless space. Attach two LEDs to the modulbus
* connectors (SS2->GND, SS5->GND), so your r0ket can light up its nacelles
* when breaking the warp barrier.
*
* commit 33fe346942176a0e988818980d04d1a8f746f894 1 parent 0eaf74fa87
* wertarbyte authored August 13, 2011
*/
#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 100
#define SPEED_MAX 10
#define SPEED_DEFAULT 4
#define SPEED_STOP 0
#define SPEED_WARP 6
// Two RGB LEDs on the Modulbus
#define LEDA_R RB_SPI_SS0
#define LEDA_G RB_SPI_SS1
#define LEDA_B RB_SPI_SS2
#define LEDB_R RB_SPI_SS3
#define LEDB_G RB_SPI_SS4
#define LEDB_B RB_SPI_SS5
typedef struct {
short x, y, z;
} s_star;
typedef struct {
short speed;
} s_ship;
static s_ship ship = {SPEED_DEFAULT};
static s_star stars[NUM_STARS];
void init_star(s_star *star, int z);
void set_warp_lights(uint8_t enabled);
void drift_ship(void);
void ram(void)
{
short centerx = RESX >> 1;
short centery = RESY >> 1;
short i;
uint8_t key = 0;
for (i = 0; i < NUM_STARS; i++) {
init_star(stars + i, i + 1);
}
static uint8_t count = 0;
while(1) {
count++;
count%=256;
key = getInputRaw();
if (key == BTN_ENTER) {
break;
} else if ( count%4 == 0 ) {
if (key == BTN_UP && ship.speed < SPEED_MAX) {
ship.speed++;
} else if (key == BTN_DOWN && ship.speed > SPEED_STOP) {
ship.speed--;
} else if (key ==BTN_NONE) {
/* converge towards default speed */
if (ship.speed < SPEED_DEFAULT) {
ship.speed++;
} else if (ship.speed > SPEED_DEFAULT) {
ship.speed--;
}
}
}
if (ship.speed > SPEED_WARP) {
set_warp_lights(1);
} else {
set_warp_lights(0);
}
if (ship.speed == 0 && count%6==0) drift_ship();
int dx=0;
int dy=0;
setExtFont(GLOBAL(nickfont));
dx=DoString(0,0,GLOBAL(nickname));
dx=(RESX-dx)/2;
if(dx<0) dx=0;
dy=(RESY-getFontHeight())/2;
lcdClear();
DoString(dx,dy,GLOBAL(nickname));
for (i = 0; i < NUM_STARS; i++) {
stars[i].z -= ship.speed;
if (ship.speed > 0 && 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) {
if (ship.speed > 0) { /* if we are flying, generate new stars in front */
init_star(stars + i, i + 1);
} else { /* if we are drifting, simply move those stars to the other end */
stars[i].x = (((tempx%RESX)-centerx)*stars[i].z)/30;
stars[i].y = (((tempy%RESY)-centery)*stars[i].z)/30;
}
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);
}
set_warp_lights(0);
}
void set_warp_lights(uint8_t enabled) {
gpioSetValue(LEDA_R, 0);
gpioSetValue(LEDA_G, 0);
gpioSetValue(LEDA_B, enabled);
gpioSetValue(LEDB_R, 0);
gpioSetValue(LEDB_G, 0);
gpioSetValue(LEDB_B, enabled);
}
void drift_ship(void) {
uint8_t d_x = 1;
uint8_t d_y = 1;
for (uint8_t i = 0; i < NUM_STARS; i++) {
stars[i].x += d_x;
stars[i].y += d_y;
}
}
void init_star(s_star *star, int z)
{
star->x = (getRandom() % RESX) - (RESX >> 1);
star->y = (getRandom() % RESY) - (RESY >> 1);
star->z = z;
return;
}