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/* GravityWars 1.1, (C) Sami Niemi -95 */
#include "memory.h"
/*--------------------------------------------------------------- centerShip */
/* Centers the scrolling picture in Y direction */
void centerShip(short nr) {
static short y;
y=(sy[nr] >> STEP)-240;
if (y<16)
y=16;
else
if (y>960)
y=960;
gl_setdisplaystart(0,y);
#ifdef ANIM
animate();
#endif
#ifdef SCORE
if ((y>16) || (y<960) || (ScoreChange)){
/* Don't draw the scoretable in the upper part of the screen */
y+=8; /* Why? - Because it's not moving....*/
/*fixscore();*/
killscore(nr,win_y,y);
win_y=y;
putscore(nr,win_y);
}
#endif
}
/*------------------------------------------------------------------ scrollY */
/* Scroll the screen from y1 -> y2 */
void scrollY(short nr, short y1, short y2) {
static int y,n;
if ((y1<950) || (y2<950)) { /* y2 -> changed ?????? */
if (y1<16)
y1=16;
else
if (y1>=968)
y1=968; /* 968 */
if (y2<24)
y2=24;
else
if (y2>968)
y2=968;
if (y1<y2) {
for(y=y1+8+4; y<=y2; y+=3) {
vga_waitretrace();
#ifdef ANIM
animate();
#endif
for(n=0; n<=delay_len; n++);
#ifdef SCORE
killscore(nr,win_y,y);
win_y=y;
putscore(nr,win_y);
gl_setdisplaystart(0,y-8);
#endif
/*
#ifdef SCORE
putscoreOnly(nr,win_y);
#endif
*/
}
vga_waitretrace();
delay_len=delay_len<<1;
for(n=0; n<=delay_len; n++);
delay_len=delay_len>>1;
#ifdef SCORE
killscore(nr,win_y,y2);
win_y=y2;
putscore(nr,win_y);
#endif
gl_setdisplaystart(0,y2-8);
}
else {
for(y=y1+8-4; y>=y2; y-=3) {
vga_waitretrace();
#ifdef ANIM
animate();
#endif
for(n=0; n<=delay_len; n++);
#ifdef SCORE
killscore(nr,win_y,y);
win_y=y;
putscore(nr,win_y);
#endif
gl_setdisplaystart(0,y-8);
/*
#ifdef SCORE
putscoreOnly(nr,win_y);
#endif
*/
}
vga_waitretrace();
gl_setdisplaystart(0,y2-8);
delay_len=delay_len<<1;
for(n=0; n<=delay_len; n++);
delay_len=delay_len>>1;
#ifdef SCORE
killscore(nr,win_y,y2);
win_y=y2;
putscore(nr,win_y);
#endif
}
}
}
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