// soon as it isn't we BLOW UP
float x,y,xvel,yvel;
int active;
+ int dead; // has been blown out of the way
+ // to make room for a new ship appearing.
SDL_Surface *image;
int type_number;
float heat;
float rockrate,rockspeed;
float movementrate;
float yscroll;
+float scrollvel;
int nships,score,initticks,ticks_since_last, last_ticks;
int gameover;
// Create a new ship and start all over again
state = GAMEPLAY;
play_tune(1);
- xship = 10;
- yship = YSIZE/2;
- xvel = 3;
- yvel = 0;
- for(i = 0; i<MAXROCKS; i++ ) {
- if(dist_sq(xship, yship, rock[i].x, rock[i].y) < START_RAD_SQ) {
- rock[i].active = 0;
- }
- }
+ xship -= 50;
break;
case GAME_OVER:
state = HIGH_SCORE_ENTRY;
state_timeout = 200.0;
break;
}
+ } else {
+ if(state == DEAD_PAUSE) {
+ float blast_radius = START_RAD * state_timeout / 20.0;
+ if(xship < 60) xship = 60;
+ for(i = 0; i<MAXROCKS; i++ ) {
+ float dx, dy, n;
+ if(rock[i].x <= 0) continue;
+ dx = rock[i].x - xship;
+ dy = rock[i].y - yship;
+ n = sqrt(dx*dx + dy*dy);
+ if(n < blast_radius) {
+ n *= 20;
+ rock[i].xvel += rockrate*(dx+30)/n;
+ rock[i].yvel += rockrate*dy/n;
+ rock[i].dead = 1;
+ }
+ }
+ }
}
if(--countdown <= 0 && (rnd()*100.0<(rockrate += 0.025))) {
// SCROLLING
yscroll = yship - (YSIZE / 2);
- yscroll /= -15;
+ yscroll += yvel * 25;
+ yscroll /= -25;
+ yscroll = ((scrollvel * (12 - movementrate)) + (yscroll * movementrate)) / 12;
+ scrollvel = yscroll;
yscroll = yscroll*movementrate;
yship += yscroll;
for(i = 0; i<MAXROCKS; i++) if(rock[i].active) {
rock[i].x += rock[i].xvel*movementrate;
rock[i].y += rock[i].yvel*movementrate + yscroll;
- if(rock[i].y > YSIZE) {
- rock[i].y -= YSIZE;
- rock[i].y -= rock[i].image->w;
- } else if(rock[i].y < -rock[i].image->w) {
- rock[i].y += YSIZE;
- rock[i].y += rock[i].image->w;
- }
- if(rock[i].x<-32.0)
- rock[i].active = 0;
+ if(rock[i].dead && (rock[i].y < 0 || rock[i].y > YSIZE)) rock[i].active = 0;
+ if(rock[i].y > YSIZE) {
+ rock[i].y -= YSIZE;
+ rock[i].y -= rock[i].image->w;
+ } else if(rock[i].y < -rock[i].image->w) {
+ rock[i].y += YSIZE;
+ rock[i].y += rock[i].image->w;
+ }
+ if(rock[i].x < -32.0) rock[i].active = 0;
}
}
else {
state = DEAD_PAUSE;
- state_timeout = 50.0;
-
+ state_timeout = 20.0;
+ xvel = 0;
+ yvel = 0;
}
}
for(i = 0; i<MAXROCKS; i++ ) {
rock[i].active = 0;
+ rock[i].dead = 0;
}
rockrate = 54.0;
while(1) {
for(i = 0; i<MAXROCKS; i++) {
rock[i].active = 0;
+ rock[i].dead = 0;
}
rockrate = 54.0;
rockspeed = 5.0;