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x-scrolling: naming convention and formatting fix

This commit is contained in:
Wei-ju Wu 2016-06-20 20:53:04 -07:00
parent ab8c02cc7b
commit 1fe3e13cfd
2 changed files with 93 additions and 123 deletions
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105
scrolling_tricks/xlimited.c
View File

@ -42,8 +42,8 @@
#define DIRECTION_LEFT 1 #define DIRECTION_LEFT 1
struct Screen *scr; struct Screen *scr;
struct RastPort *ScreenRastPort; struct RastPort *screen_rastport;
struct BitMap *BlocksBitmap, *ScreenBitmap; struct BitMap *blocks_bitmap, *screen_bitmap;
struct LevelMap level_map; struct LevelMap level_map;
struct PrgOptions options; struct PrgOptions options;
@ -96,14 +96,14 @@ static void cleanup (char *msg)
if (scr) CloseScreen(scr); if (scr) CloseScreen(scr);
if (ScreenBitmap) { if (screen_bitmap) {
WaitBlit(); WaitBlit();
FreeBitMap(ScreenBitmap); FreeBitMap(screen_bitmap);
} }
if (BlocksBitmap) { if (blocks_bitmap) {
WaitBlit(); WaitBlit();
FreeBitMap(BlocksBitmap); FreeBitMap(blocks_bitmap);
} }
if (level_map.raw_map) FreeVec(level_map.raw_map); if (level_map.raw_map) FreeVec(level_map.raw_map);
@ -112,32 +112,30 @@ static void cleanup (char *msg)
static void open_display(void) static void open_display(void)
{ {
ULONG modeid;
bitmapheight = BITMAPHEIGHT + (level_map.width / BITMAPBLOCKSPERROW / BLOCKSDEPTH) + 1 + 3; bitmapheight = BITMAPHEIGHT + (level_map.width / BITMAPBLOCKSPERROW / BLOCKSDEPTH) + 1 + 3;
if (!(ScreenBitmap = AllocBitMap(BITMAPWIDTH, bitmapheight, BLOCKSDEPTH, if (!(screen_bitmap = AllocBitMap(BITMAPWIDTH, bitmapheight, BLOCKSDEPTH,
BMF_STANDARD | BMF_INTERLEAVED | BMF_CLEAR, 0))) { BMF_STANDARD | BMF_INTERLEAVED | BMF_CLEAR, 0))) {
cleanup("Can't alloc screen bitmap!"); cleanup("Can't alloc screen bitmap!");
} }
frontbuffer = ScreenBitmap->Planes[0]; frontbuffer = screen_bitmap->Planes[0];
frontbuffer += (fetchinfo[options.fetchmode].bitmapoffset / 8); frontbuffer += (fetchinfo[options.fetchmode].bitmapoffset / 8);
if (!(TypeOfMem(ScreenBitmap->Planes[0]) & MEMF_CHIP)) { if (!(TypeOfMem(screen_bitmap->Planes[0]) & MEMF_CHIP)) {
cleanup("Screen bitmap is not in CHIP RAM!?? If you have a gfx card try disabling \"planes to fast\" or similiar options in your RTG system!"); cleanup("Screen bitmap is not in CHIP RAM!?? If you have a gfx card try disabling \"planes to fast\" or similiar options in your RTG system!");
} }
if (!IS_BITMAP_INTERLEAVED(ScreenBitmap)) { if (!IS_BITMAP_INTERLEAVED(screen_bitmap)) {
cleanup("Screen bitmap is not in interleaved format!??"); cleanup("Screen bitmap is not in interleaved format!??");
} }
modeid = get_mode_id(options.how, options.ntsc); ULONG modeid = get_mode_id(options.how, options.ntsc);
if (!(scr = OpenScreenTags(0, SA_Width, BITMAPWIDTH, if (!(scr = OpenScreenTags(0, SA_Width, BITMAPWIDTH,
SA_Height, bitmapheight, SA_Height, bitmapheight,
SA_Depth, BLOCKSDEPTH, SA_Depth, BLOCKSDEPTH,
SA_DisplayID, modeid, SA_DisplayID, modeid,
SA_BitMap, ScreenBitmap, SA_BitMap, screen_bitmap,
options.how ? SA_Overscan : TAG_IGNORE, OSCAN_TEXT, options.how ? SA_Overscan : TAG_IGNORE, OSCAN_TEXT,
options.how ? SA_AutoScroll : TAG_IGNORE, TRUE, options.how ? SA_AutoScroll : TAG_IGNORE, TRUE,
SA_Quiet, TRUE, SA_Quiet, TRUE,
@ -145,18 +143,15 @@ static void open_display(void)
cleanup("Can't open screen!"); cleanup("Can't open screen!");
} }
if (scr->RastPort.BitMap->Planes[0] != ScreenBitmap->Planes[0]) { if (scr->RastPort.BitMap->Planes[0] != screen_bitmap->Planes[0]) {
cleanup("Screen was not created with the custom bitmap I supplied!??"); cleanup("Screen was not created with the custom bitmap I supplied!??");
} }
ScreenRastPort = &scr->RastPort; screen_rastport = &scr->RastPort;
LoadRGB4(&scr->ViewPort, colors, BLOCKSCOLORS); LoadRGB4(&scr->ViewPort, colors, BLOCKSCOLORS);
} }
static void init_copper_list(void) static void init_copper_list(void)
{ {
WORD *wp;
LONG l;
wait_vbl(); wait_vbl();
custom->dmacon = 0x7FFF; custom->dmacon = 0x7FFF;
custom->beamcon0 = options.ntsc ? 0 : DISPLAYPAL; custom->beamcon0 = options.ntsc ? 0 : DISPLAYPAL;
@ -171,7 +166,8 @@ static void init_copper_list(void)
CopBPLCON3[1] = BPLCON3_BRDNBLNK; CopBPLCON3[1] = BPLCON3_BRDNBLNK;
// bitplane modulos // bitplane modulos
l = BITMAPBYTESPERROW * BLOCKSDEPTH - SCREENBYTESPERROW - fetchinfo[options.fetchmode].modulooffset; LONG l = BITMAPBYTESPERROW * BLOCKSDEPTH - SCREENBYTESPERROW -
fetchinfo[options.fetchmode].modulooffset;
CopBPLMODA[1] = l; CopBPLMODA[1] = l;
CopBPLMODB[1] = l; CopBPLMODB[1] = l;
@ -185,11 +181,11 @@ static void init_copper_list(void)
CopDDFSTOP[1] = fetchinfo[options.fetchmode].ddfstop; CopDDFSTOP[1] = fetchinfo[options.fetchmode].ddfstop;
// plane pointers // plane pointers
wp = CopPLANE1H; WORD *wp = CopPLANE1H;
for (l = 0; l < BLOCKSDEPTH; l++) { for (l = 0; l < BLOCKSDEPTH; l++) {
wp[1] = (WORD) (((ULONG)ScreenBitmap->Planes[l]) >> 16); wp[1] = (WORD) (((ULONG) screen_bitmap->Planes[l]) >> 16);
wp[3] = (WORD) (((ULONG)ScreenBitmap->Planes[l]) & 0xFFFF); wp[3] = (WORD) (((ULONG) screen_bitmap->Planes[l]) & 0xFFFF);
wp += 4; wp += 4;
} }
@ -204,14 +200,12 @@ static void init_copper_list(void)
static void draw_block(LONG x, LONG y, LONG mapx, LONG mapy) static void draw_block(LONG x, LONG y, LONG mapx, LONG mapy)
{ {
UBYTE block;
// x = in pixels // x = in pixels
// y = in "planelines" (1 realline = BLOCKSDEPTH planelines) // y = in "planelines" (1 realline = BLOCKSDEPTH planelines)
x = (x / 8) & 0xFFFE; x = (x / 8) & 0xFFFE;
y = y * BITMAPBYTESPERROW; y = y * BITMAPBYTESPERROW;
block = level_map.data[mapy * level_map.width + mapx]; UBYTE block = level_map.data[mapy * level_map.width + mapx];
mapx = (block % BLOCKSPERROW) * (BLOCKWIDTH / 8); mapx = (block % BLOCKSPERROW) * (BLOCKWIDTH / 8);
mapy = (block / BLOCKSPERROW) * (BLOCKPLANELINES * BLOCKSBYTESPERROW); mapy = (block / BLOCKSPERROW) * (BLOCKPLANELINES * BLOCKSBYTESPERROW);
@ -247,18 +241,16 @@ static void fill_screen(void)
static void scroll_left(void) static void scroll_left(void)
{ {
WORD mapx,mapy,x,y;
if (mapposx < 1) return; if (mapposx < 1) return;
mapposx--; mapposx--;
videoposx = mapposx; videoposx = mapposx;
mapx = mapposx / BLOCKWIDTH; WORD mapx = mapposx / BLOCKWIDTH;
mapy = mapposx & (NUMSTEPS - 1); WORD mapy = mapposx & (NUMSTEPS - 1);
x = ROUND2BLOCKWIDTH(videoposx); WORD x = ROUND2BLOCKWIDTH(videoposx);
y = mapy * BLOCKPLANELINES; WORD y = mapy * BLOCKPLANELINES;
if (previous_direction == DIRECTION_RIGHT) { if (previous_direction == DIRECTION_RIGHT) {
hard_wait_blit(); hard_wait_blit();
@ -273,15 +265,13 @@ static void scroll_left(void)
static void scroll_right(void) static void scroll_right(void)
{ {
WORD mapx,mapy,x,y;
if (mapposx >= (level_map.width * BLOCKWIDTH - SCREENWIDTH - BLOCKWIDTH)) return; if (mapposx >= (level_map.width * BLOCKWIDTH - SCREENWIDTH - BLOCKWIDTH)) return;
mapx = mapposx / BLOCKWIDTH + BITMAPBLOCKSPERROW; WORD mapx = mapposx / BLOCKWIDTH + BITMAPBLOCKSPERROW;
mapy = mapposx & (NUMSTEPS - 1); WORD mapy = mapposx & (NUMSTEPS - 1);
x = BITMAPWIDTH + ROUND2BLOCKWIDTH(videoposx); WORD x = BITMAPWIDTH + ROUND2BLOCKWIDTH(videoposx);
y = mapy * BLOCKPLANELINES; WORD y = mapy * BLOCKPLANELINES;
if (previous_direction == DIRECTION_LEFT) { if (previous_direction == DIRECTION_LEFT) {
hard_wait_blit(); hard_wait_blit();
@ -306,17 +296,13 @@ static void check_joy_scroll(void)
static void update_copper_list(void) static void update_copper_list(void)
{ {
ULONG pl;
WORD xpos, planeaddx, scroll, i;
WORD *wp;
i = fetchinfo[options.fetchmode].scrollpixels; WORD i = fetchinfo[options.fetchmode].scrollpixels;
WORD xpos = videoposx + i - 1;
WORD planeaddx = (xpos / i) * (i / 8);
xpos = videoposx + i - 1;
planeaddx = (xpos / i) * (i / 8);
i = (i - 1) - (xpos & (i - 1)); i = (i - 1) - (xpos & (i - 1));
scroll = (i & 15) * 0x11; WORD scroll = (i & 15) * 0x11;
if (i & 16) scroll |= (0x400 + 0x4000); if (i & 16) scroll |= (0x400 + 0x4000);
if (i & 32) scroll |= (0x800 + 0x8000); if (i & 32) scroll |= (0x800 + 0x8000);
@ -325,10 +311,11 @@ static void update_copper_list(void)
CopBPLCON1[1] = scroll; CopBPLCON1[1] = scroll;
// set plane pointers // set plane pointers
wp = CopPLANE1H; WORD *wp = CopPLANE1H;
ULONG pl;
for (i = 0; i < BLOCKSDEPTH; i++) { for (i = 0; i < BLOCKSDEPTH; i++) {
pl = ((ULONG)ScreenBitmap->Planes[i]) + planeaddx; pl = ((ULONG) screen_bitmap->Planes[i]) + planeaddx;
wp[1] = (WORD) (pl >> 16); wp[1] = (WORD) (pl >> 16);
wp[3] = (WORD) (pl & 0xFFFF); wp[3] = (WORD) (pl & 0xFFFF);
wp += 4; wp += 4;
@ -339,16 +326,16 @@ static void show_what_copper_would_do(void)
{ {
WORD x = (videoposx+16) % BITMAPWIDTH; WORD x = (videoposx+16) % BITMAPWIDTH;
SetWriteMask(ScreenRastPort, 1); SetWriteMask(screen_rastport, 1);
SetAPen(ScreenRastPort, 0); SetAPen(screen_rastport, 0);
RectFill(ScreenRastPort, 0, bitmapheight - 3, BITMAPWIDTH - 1, bitmapheight - 3); RectFill(screen_rastport, 0, bitmapheight - 3, BITMAPWIDTH - 1, bitmapheight - 3);
SetAPen(ScreenRastPort,1); SetAPen(screen_rastport,1);
if (x <= EXTRAWIDTH) { if (x <= EXTRAWIDTH) {
RectFill(ScreenRastPort, x, bitmapheight - 3, x + SCREENWIDTH - 1, bitmapheight - 3); RectFill(screen_rastport, x, bitmapheight - 3, x + SCREENWIDTH - 1, bitmapheight - 3);
} else { } else {
RectFill(ScreenRastPort, x, bitmapheight - 3, BITMAPWIDTH - 1, bitmapheight - 3); RectFill(screen_rastport, x, bitmapheight - 3, BITMAPWIDTH - 1, bitmapheight - 3);
RectFill(ScreenRastPort, 0, bitmapheight - 3, x - EXTRAWIDTH, bitmapheight - 3); RectFill(screen_rastport, 0, bitmapheight - 3, x - EXTRAWIDTH, bitmapheight - 3);
} }
} }
@ -387,9 +374,9 @@ int main(int argc, char **argv)
res = read_level_map(LARGE_MAP_PATH, &level_map, s); res = read_level_map(LARGE_MAP_PATH, &level_map, s);
if (!res) cleanup(s); if (!res) cleanup(s);
BlocksBitmap = read_blocks(DEMO_BLOCKS_PATH, colors, s, BLOCKSWIDTH, BLOCKSHEIGHT); blocks_bitmap = read_blocks(DEMO_BLOCKS_PATH, colors, s, BLOCKSWIDTH, BLOCKSHEIGHT);
if (!BlocksBitmap) cleanup(s); if (!blocks_bitmap) cleanup(s);
blocksbuffer = BlocksBitmap->Planes[0]; blocksbuffer = blocks_bitmap->Planes[0];
open_display(); open_display();

111
scrolling_tricks/xunlimited.c
View File

@ -43,8 +43,8 @@
struct LevelMap level_map; struct LevelMap level_map;
struct PrgOptions options; struct PrgOptions options;
struct BitMap *BlocksBitmap, *ScreenBitmap; struct BitMap *blocks_bitmap, *screen_bitmap;
struct RastPort *ScreenRastPort; struct RastPort *screen_rastport;
struct Screen *scr; struct Screen *scr;
UBYTE *frontbuffer, *blocksbuffer; UBYTE *frontbuffer, *blocksbuffer;
@ -71,14 +71,14 @@ static void cleanup(char *msg)
if (scr) CloseScreen(scr); if (scr) CloseScreen(scr);
if (ScreenBitmap) { if (screen_bitmap) {
WaitBlit(); WaitBlit();
FreeBitMap(ScreenBitmap); FreeBitMap(screen_bitmap);
} }
if (BlocksBitmap) { if (blocks_bitmap) {
WaitBlit(); WaitBlit();
FreeBitMap(BlocksBitmap); FreeBitMap(blocks_bitmap);
} }
if (level_map.raw_map) free(level_map.raw_map); if (level_map.raw_map) free(level_map.raw_map);
exit(rc); exit(rc);
@ -86,30 +86,27 @@ static void cleanup(char *msg)
static void open_display(void) static void open_display(void)
{ {
ULONG modeid; if (!(screen_bitmap = AllocBitMap(BITMAPWIDTH, BITMAPHEIGHT + 3, BLOCKSDEPTH,
LONG bmflags; BMF_STANDARD | BMF_INTERLEAVED | BMF_CLEAR, 0))) {
if (!(ScreenBitmap = AllocBitMap(BITMAPWIDTH, BITMAPHEIGHT + 3, BLOCKSDEPTH,
BMF_STANDARD | BMF_INTERLEAVED | BMF_CLEAR, 0))) {
cleanup("Can't alloc screen bitmap!"); cleanup("Can't alloc screen bitmap!");
} }
frontbuffer = ScreenBitmap->Planes[0]; frontbuffer = screen_bitmap->Planes[0];
frontbuffer += (fetchinfo[options.fetchmode].bitmapoffset / 8); frontbuffer += (fetchinfo[options.fetchmode].bitmapoffset / 8);
if (!(TypeOfMem(ScreenBitmap->Planes[0]) & MEMF_CHIP)) { if (!(TypeOfMem(screen_bitmap->Planes[0]) & MEMF_CHIP)) {
cleanup("Screen bitmap is not in CHIP RAM!?? If you have a gfx card try disabling \"planes to fast\" or similiar options in your RTG system!"); cleanup("Screen bitmap is not in CHIP RAM!?? If you have a gfx card try disabling \"planes to fast\" or similiar options in your RTG system!");
} }
if (!IS_BITMAP_INTERLEAVED(ScreenBitmap)) { if (!IS_BITMAP_INTERLEAVED(screen_bitmap)) {
cleanup("Screen bitmap is not in interleaved format!??"); cleanup("Screen bitmap is not in interleaved format!??");
} }
modeid = get_mode_id(options.how, options.ntsc); ULONG modeid = get_mode_id(options.how, options.ntsc);
if (!(scr = OpenScreenTags(0, SA_Width, BITMAPWIDTH, if (!(scr = OpenScreenTags(0, SA_Width, BITMAPWIDTH,
SA_Height, BITMAPHEIGHT + 3, SA_Height, BITMAPHEIGHT + 3,
SA_Depth, BLOCKSDEPTH, SA_Depth, BLOCKSDEPTH,
SA_DisplayID, modeid, SA_DisplayID, modeid,
SA_BitMap, ScreenBitmap, SA_BitMap, screen_bitmap,
options.how ? SA_Overscan : TAG_IGNORE,OSCAN_TEXT, options.how ? SA_Overscan : TAG_IGNORE,OSCAN_TEXT,
options.how ? SA_AutoScroll : TAG_IGNORE,TRUE, options.how ? SA_AutoScroll : TAG_IGNORE,TRUE,
SA_Quiet,TRUE, SA_Quiet,TRUE,
@ -117,18 +114,15 @@ static void open_display(void)
cleanup("Can't open screen!"); cleanup("Can't open screen!");
} }
if (scr->RastPort.BitMap->Planes[0] != ScreenBitmap->Planes[0]) { if (scr->RastPort.BitMap->Planes[0] != screen_bitmap->Planes[0]) {
cleanup("Screen was not created with the custom bitmap I supplied!??"); cleanup("Screen was not created with the custom bitmap I supplied!??");
} }
ScreenRastPort = &scr->RastPort; screen_rastport = &scr->RastPort;
LoadRGB4(&scr->ViewPort, colors, BLOCKSCOLORS); LoadRGB4(&scr->ViewPort, colors, BLOCKSCOLORS);
} }
static void init_copper_list(void) static void init_copper_list(void)
{ {
WORD *wp;
LONG l;
wait_vbl(); wait_vbl();
custom->dmacon = 0x7FFF; custom->dmacon = 0x7FFF;
custom->beamcon0 = options.ntsc ? 0 : DISPLAYPAL; custom->beamcon0 = options.ntsc ? 0 : DISPLAYPAL;
@ -142,7 +136,8 @@ static void init_copper_list(void)
CopBPLCON3[1] = BPLCON3_BRDNBLNK; CopBPLCON3[1] = BPLCON3_BRDNBLNK;
// bitplane modulos // bitplane modulos
l = BITMAPBYTESPERROW * BLOCKSDEPTH - SCREENBYTESPERROW - fetchinfo[options.fetchmode].modulooffset; LONG l = BITMAPBYTESPERROW * BLOCKSDEPTH - SCREENBYTESPERROW -
fetchinfo[options.fetchmode].modulooffset;
CopBPLMODA[1] = l; CopBPLMODA[1] = l;
CopBPLMODB[1] = l; CopBPLMODB[1] = l;
@ -156,11 +151,11 @@ static void init_copper_list(void)
CopDDFSTOP[1] = fetchinfo[options.fetchmode].ddfstop; CopDDFSTOP[1] = fetchinfo[options.fetchmode].ddfstop;
// plane pointers // plane pointers
wp = CopPLANE1H; WORD *wp = CopPLANE1H;
for (l = 0; l < BLOCKSDEPTH; l++) { for (l = 0; l < BLOCKSDEPTH; l++) {
wp[1] = (WORD)(((ULONG) ScreenBitmap->Planes[l]) >> 16); wp[1] = (WORD)(((ULONG) screen_bitmap->Planes[l]) >> 16);
wp[3] = (WORD)(((ULONG) ScreenBitmap->Planes[l]) & 0xFFFF); wp[3] = (WORD)(((ULONG) screen_bitmap->Planes[l]) & 0xFFFF);
wp += 4; wp += 4;
} }
@ -172,18 +167,14 @@ static void init_copper_list(void)
custom->cop2lc = (ULONG) CopperList; custom->cop2lc = (ULONG) CopperList;
} }
/******************* SCROLLING **********************/
static void draw_block(LONG x, LONG y, LONG mapx, LONG mapy) static void draw_block(LONG x, LONG y, LONG mapx, LONG mapy)
{ {
UBYTE block;
// x = in pixels // x = in pixels
// y = in "planelines" (1 realline = BLOCKSDEPTH planelines) // y = in "planelines" (1 realline = BLOCKSDEPTH planelines)
x = x / 8; x = x / 8;
y = y * BITMAPBYTESPERROW; y = y * BITMAPBYTESPERROW;
block = level_map.data[mapy * level_map.width + mapx]; UBYTE block = level_map.data[mapy * level_map.width + mapx];
mapx = (block % BLOCKSPERROW) * (BLOCKWIDTH / 8); mapx = (block % BLOCKSPERROW) * (BLOCKWIDTH / 8);
mapy = (block / BLOCKSPERROW) * (BLOCKPLANELINES * BLOCKSBYTESPERROW); mapy = (block / BLOCKSPERROW) * (BLOCKPLANELINES * BLOCKSBYTESPERROW);
@ -221,18 +212,16 @@ static void fill_screen(void)
static void scroll_left(void) static void scroll_left(void)
{ {
WORD mapx,mapy,x,y;
if (mapposx < 1) return; if (mapposx < 1) return;
mapposx--; mapposx--;
videoposx = mapposx % HALFBITMAPWIDTH; videoposx = mapposx % HALFBITMAPWIDTH;
mapx = mapposx / BLOCKWIDTH; WORD mapx = mapposx / BLOCKWIDTH;
mapy = mapposx & (NUMSTEPS - 1); WORD mapy = mapposx & (NUMSTEPS - 1);
x = ROUND2BLOCKWIDTH(videoposx); WORD x = ROUND2BLOCKWIDTH(videoposx);
y = mapy * BLOCKPLANELINES; WORD y = mapy * BLOCKPLANELINES;
draw_block(x, y, mapx, mapy); draw_block(x, y, mapx, mapy);
draw_block(x + HALFBITMAPWIDTH, y, mapx, mapy); draw_block(x + HALFBITMAPWIDTH, y, mapx, mapy);
@ -240,15 +229,13 @@ static void scroll_left(void)
static void scroll_right(void) static void scroll_right(void)
{ {
WORD mapx, mapy, x, y;
if (mapposx >= (level_map.width * BLOCKWIDTH - SCREENWIDTH - BLOCKWIDTH)) return; if (mapposx >= (level_map.width * BLOCKWIDTH - SCREENWIDTH - BLOCKWIDTH)) return;
mapx = mapposx / BLOCKWIDTH + HALFBITMAPBLOCKSPERROW; WORD mapx = mapposx / BLOCKWIDTH + HALFBITMAPBLOCKSPERROW;
mapy = mapposx & (NUMSTEPS - 1); WORD mapy = mapposx & (NUMSTEPS - 1);
x = ROUND2BLOCKWIDTH(videoposx); WORD x = ROUND2BLOCKWIDTH(videoposx);
y = mapy * BLOCKPLANELINES; WORD y = mapy * BLOCKPLANELINES;
draw_block(x, y, mapx, mapy); draw_block(x, y, mapx, mapy);
draw_block(x + HALFBITMAPWIDTH, y, mapx, mapy); draw_block(x + HALFBITMAPWIDTH, y, mapx, mapy);
@ -266,18 +253,13 @@ static void check_joy_scroll(void)
static void update_copper_list(void) static void update_copper_list(void)
{ {
ULONG pl; WORD i = fetchinfo[options.fetchmode].scrollpixels;
WORD xpos, planeaddx, scroll, i; WORD xpos = videoposx + i - 1;
WORD *wp; WORD planeaddx = (xpos / i) * (i / 8);
i = fetchinfo[options.fetchmode].scrollpixels;
xpos = videoposx + i - 1;
planeaddx = (xpos / i) * (i / 8);
i = (i - 1) - (xpos & (i - 1)); i = (i - 1) - (xpos & (i - 1));
scroll = (i & 15) * 0x11; WORD scroll = (i & 15) * 0x11;
if (i & 16) scroll |= (0x400 + 0x4000); if (i & 16) scroll |= (0x400 + 0x4000);
if (i & 32) scroll |= (0x800 + 0x8000); if (i & 32) scroll |= (0x800 + 0x8000);
@ -285,10 +267,11 @@ static void update_copper_list(void)
CopBPLCON1[1] = scroll; CopBPLCON1[1] = scroll;
// set plane pointers // set plane pointers
wp = CopPLANE1H; WORD *wp = CopPLANE1H;
ULONG pl;
for (i = 0; i < BLOCKSDEPTH; i++) { for (i = 0; i < BLOCKSDEPTH; i++) {
pl = ((ULONG) ScreenBitmap->Planes[i]) + planeaddx; pl = ((ULONG) screen_bitmap->Planes[i]) + planeaddx;
wp[1] = (WORD) (pl >> 16); wp[1] = (WORD) (pl >> 16);
wp[3] = (WORD) (pl & 0xFFFF); wp[3] = (WORD) (pl & 0xFFFF);
wp += 4; wp += 4;
@ -297,11 +280,11 @@ static void update_copper_list(void)
static void show_what_copper_would_do(void) static void show_what_copper_would_do(void)
{ {
SetWriteMask(ScreenRastPort,1); SetWriteMask(screen_rastport,1);
SetAPen(ScreenRastPort, 0); SetAPen(screen_rastport, 0);
RectFill(ScreenRastPort, 0, BITMAPHEIGHT + 1, BITMAPWIDTH - 1, BITMAPHEIGHT + 1); RectFill(screen_rastport, 0, BITMAPHEIGHT + 1, BITMAPWIDTH - 1, BITMAPHEIGHT + 1);
SetAPen(ScreenRastPort, 1); SetAPen(screen_rastport, 1);
RectFill(ScreenRastPort, videoposx + BLOCKWIDTH, BITMAPHEIGHT + 1, RectFill(screen_rastport, videoposx + BLOCKWIDTH, BITMAPHEIGHT + 1,
videoposx + BLOCKWIDTH + SCREENWIDTH - 1, BITMAPHEIGHT + 1); videoposx + BLOCKWIDTH + SCREENWIDTH - 1, BITMAPHEIGHT + 1);
} }
@ -320,11 +303,11 @@ static void main_loop(void)
wait_vbeam(200); wait_vbeam(200);
} else Delay(1); } else Delay(1);
if (options.speed) *(WORD *) 0xdff180 = 0xFF0; if (options.speed) *(WORD *) 0xdff180 = 0xff0;
check_joy_scroll(); check_joy_scroll();
if (options.speed) *(WORD *) 0xdff180 = 0xF00; if (options.speed) *(WORD *) 0xdff180 = 0xf00;
if (!options.how) update_copper_list(); if (!options.how) update_copper_list();
else show_what_copper_would_do(); else show_what_copper_would_do();
} }
@ -337,14 +320,14 @@ int main(int argc, char **argv)
res = read_level_map(LARGE_MAP_PATH, &level_map, s); res = read_level_map(LARGE_MAP_PATH, &level_map, s);
if (!res) cleanup(s); if (!res) cleanup(s);
BlocksBitmap = read_blocks(DEMO_BLOCKS_PATH, colors, s, BLOCKSWIDTH, BLOCKSHEIGHT); blocks_bitmap = read_blocks(DEMO_BLOCKS_PATH, colors, s, BLOCKSWIDTH, BLOCKSHEIGHT);
if (!BlocksBitmap) cleanup(s); if (!blocks_bitmap) cleanup(s);
blocksbuffer = BlocksBitmap->Planes[0]; blocksbuffer = blocks_bitmap->Planes[0];
open_display(); open_display();
if (!options.how) { if (!options.how) {
Delay(2*50); Delay(2 * 50);
kill_system(); kill_system();
init_copper_list(); init_copper_list();
} }