- // Move all the rocks
- for(i = 0; i < MAXROCKS; i++) {
- if(rock[i].active) {
- // move
- rock[i].x += rock[i].dx*gamerate;
- rock[i].y += rock[i].dy*gamerate + yscroll;
- // clip
- if(rock[i].y < -rock[i].image->h || rock[i].y > YSIZE) {
- // rock[i].active = 0;
- rock[i].y = (YSIZE - rock[i].image->h) - rock[i].y;
- rock[i].y += (rock[i].dy*gamerate + yscroll) * 1.01;
- }
- if(rock[i].x < -rock[i].image->w || rock[i].x > XSIZE) rock[i].active = 0;
+ for(i=0; i<4; i++) ti[i] = 0;
+ for(i=0; i<4; i++) speed_min[i] = 0;
+ for(i=0; i<4; i++) speed_max[i] = 0;
+ hfactor = (float)nrocks/KH; vfactor = (float)nrocks/KV;
+
+ dx0 = -RDX - screendx; dx1 = RDX - screendx;
+ dy0 = -RDY - screendy; dy1 = RDY - screendy;
+
+ if(dx0 < 0) {
+ speed_max[RIGHT] = -dx0;
+ if(dx1 < 0) {
+ // Rocks moving left only. So the RIGHT side of the screen
+ speed_min[RIGHT] = -dx1;
+ ti[RIGHT] = -(dx0+dx1)/2;
+ } else {
+ // Rocks moving left and right
+ speed_max[LEFT] = dx1;
+ ti[RIGHT] = -dx0/2;
+ ti[LEFT] = dx1/2;
+ }
+ } else {
+ // Rocks moving right only. So the LEFT side of the screen
+ speed_min[LEFT] = dx0;
+ speed_max[LEFT] = dx1;
+ ti[LEFT] = (dx0+dx1)/2;
+ }
+ ti[LEFT] *= hfactor;
+ ti[RIGHT] *= hfactor;
+
+ if(dy0 < 0) {
+ speed_max[BOTTOM] = -dy0;
+ if(dy1 < 0) {
+ // Rocks moving up only. So the BOTTOM of the screen
+ speed_min[BOTTOM] = -dy1;
+ ti[BOTTOM] = -(dy0+dy1)/2;
+ } else {
+ // Rocks moving up and down
+ speed_max[TOP] = dy1;
+ ti[BOTTOM] = -dy0/2;
+ ti[TOP] = dy1/2;