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-rw-r--r--gfx.c1930
1 files changed, 1930 insertions, 0 deletions
diff --git a/gfx.c b/gfx.c
new file mode 100644
index 000000000..19e480a75
--- /dev/null
+++ b/gfx.c
@@ -0,0 +1,1930 @@
+#include "stdafx.h"
+#include "ttd.h"
+#include "gfx.h"
+#include "table/palettes.h"
+#include "hal.h"
+
+static void GfxMainBlitter(byte *sprite, int x, int y, int mode);
+void GfxInitPalettes();
+
+static int _stringwidth_out;
+static byte _cursor_backup[64*64];
+static Rect _invalid_rect;
+static byte *_color_remap_ptr;
+static byte _string_colorremap[3];
+
+#define DIRTY_BYTES_PER_LINE (MAX_SCREEN_WIDTH/64)
+static byte _dirty_blocks[DIRTY_BYTES_PER_LINE * MAX_SCREEN_HEIGHT / 8];
+
+
+static void memcpy_pitch(void *d, void *s, int w, int h, int spitch, int dpitch)
+{
+ byte *dp = (byte*)d;
+ byte *sp = (byte*)s;
+
+ assert(h >= 0);
+ if (h != 0) do {
+ memcpy(dp, sp, w);
+ dp += dpitch;
+ sp += spitch;
+ } while (--h);
+}
+
+
+void GfxScroll(int left, int top, int width, int height, int xo, int yo) {
+ byte *src, *dst;
+ int p;
+ int ht;
+
+ if (xo == 0 && yo == 0)
+ return;
+
+ if (_cursor.visible)
+ UndrawMouseCursor();
+
+ p = _screen.pitch;
+
+ if (yo > 0 || (yo == 0 && xo > 0)) {
+ // Calculate pointers
+ dst = _screen.dst_ptr + (top+height-1) * p + (left+width-1);
+ src = dst - yo * p;
+
+ // Decrease height and increase top
+ top += yo;
+ height -= yo;
+ assert(height > 0);
+
+ // Adjust left & width
+ if (xo >= 0) {
+ left += xo;
+ src -= xo;
+ width -= xo;
+ } else {
+ dst += xo;
+ width += xo;
+ }
+
+ // Offset pointers to fit into the memmove call
+ dst += -width + 1;
+ src += -width + 1;
+ ht = height;
+
+ do {
+ memmove(dst, src, width);
+ src -= p;
+ dst -= p;
+ } while (--ht);
+
+
+ // This part of the screen is now dirty.
+ _video_driver->make_dirty(left, top, width, height);
+
+ } else {
+ // Calculate pointers to mem.
+ dst = _screen.dst_ptr + top * p + left;
+ src = dst - yo * p;
+
+ // Decrese height. (yo is <=0).
+ height += yo;
+ assert(height > 0);
+
+ // Adjust left & width
+ if (xo >= 0) {
+ dst += xo;
+ left += xo;
+ width -= xo;
+ } else {
+ src -= xo;
+ width += xo;
+ }
+
+ ht = height;
+
+ do {
+ memcpy(dst, src, width);
+ src += p;
+ dst += p;
+ } while (--ht);
+
+ // This part of the screen is now dirty.
+ _video_driver->make_dirty(left, top, width, height);
+ }
+}
+
+
+void GfxFillRect(int left, int top, int right, int bottom, int color) {
+ DrawPixelInfo *dpi = _cur_dpi;
+ byte *dst,*ctab;
+
+ if (dpi->zoom != 0)
+ return;
+
+ if (left > right || top > bottom)
+ return;
+
+ if (right < dpi->left || left >= dpi->left + dpi->width)
+ return;
+
+ if (bottom < dpi->top || top >= dpi->top + dpi->height)
+ return;
+
+ if ( (left -= dpi->left) < 0) left = 0;
+ right = right - dpi->left + 1;
+ if (right > dpi->width) right=dpi->width;
+ right -= left;
+ assert(right > 0);
+
+ if ( (top -= dpi->top) < 0) top = 0;
+ bottom = bottom - dpi->top + 1;
+ if (bottom > dpi->height) bottom=dpi->height;
+ bottom -= top;
+ assert(bottom > 0);
+
+ dst = dpi->dst_ptr + top * dpi->pitch + left;
+
+ if (!(color & 0x8000)) {
+ if (!(color & 0x4000)) {
+ do {
+ memset(dst, color, right);
+ dst += dpi->pitch;
+ } while (--bottom);
+ } else {
+ /* use colortable mode */
+ ctab = GetSpritePtr(color & 0x3FFF) + 1;
+ do {
+ int i;
+ for(i=0; i!=right;i++)
+ dst[i] = ctab[dst[i]];
+ dst += dpi->pitch;
+ } while (--bottom);
+ }
+ } else {
+ byte bo = 0;
+ do {
+ int i;
+ byte b = (bo^=1);
+ for(i=0; i!=right;i++)
+ if ((b^=1) != 0)
+ dst[i] = (byte)color;
+ dst += dpi->pitch;
+ } while (--bottom);
+ }
+}
+
+void GfxSetPixel(int x, int y, int color)
+{
+ DrawPixelInfo *dpi = _cur_dpi;
+ if ((x-=dpi->left) < 0 || x>=dpi->width || (y-=dpi->top)<0 || y>=dpi->height)
+ return;
+ dpi->dst_ptr[y*dpi->pitch+x] = color;
+}
+
+void GfxDrawLine(int x, int y, int x2, int y2, int color)
+{
+ int dy;
+ int dx;
+ int stepx, stepy;
+ int frac;
+
+ // Check clipping first
+ {
+ DrawPixelInfo *dpi = _cur_dpi;
+ int t;
+
+ if (x < dpi->left && x2 < dpi->left)
+ return;
+
+ if (y < dpi->top && y2 < dpi->top)
+ return;
+
+ t = dpi->left + dpi->width;
+ if (x > t && x2 > t)
+ return;
+
+ t = dpi->top + dpi->height;
+ if (y > t && y2 > t)
+ return;
+ }
+
+ dy = (y2 - y) * 2;
+ if (dy < 0) { dy = -dy; stepy = -1; } else { stepy = 1; }
+
+ dx = (x2 - x) * 2;
+ if (dx < 0) { dx = -dx; stepx = -1; } else { stepx = 1; }
+
+ GfxSetPixel(x, y, color);
+ if (dx > dy) {
+ frac = dy - (dx >> 1);
+ while (x != x2) {
+ if (frac >= 0) {
+ y += stepy;
+ frac -= dx;
+ }
+ x += stepx;
+ frac += dy;
+ GfxSetPixel(x, y, color);
+ }
+ } else {
+ frac = dx - (dy >> 1);
+ while (y != y2) {
+ if (frac >= 0) {
+ x += stepx;
+ frac -= dy;
+ }
+ y += stepy;
+ frac += dx;
+ GfxSetPixel(x, y, color);
+ }
+ }
+}
+
+// ASSIGNMENT OF ASCII LETTERS < 32
+// 0 - end of string
+// 1 - SETX <BYTE>
+// 2 - SETXY <BYTE> <BYTE>
+// 3-7 -
+// 8 - TINYFONT
+// 9 - BIGFONT
+// 10 - newline
+// 11-14 -
+// 15-31 - 17 colors
+
+
+enum {
+ ASCII_LETTERSTART = 32,
+
+ ASCII_SETX = 1,
+ ASCII_SETXY = 2,
+
+ ASCII_TINYFONT = 8,
+ ASCII_BIGFONT = 9,
+ ASCII_NL = 10,
+
+ ASCII_COLORSTART = 15,
+};
+
+
+/* returns right coordinate */
+int DrawString(int x, int y, uint16 str, byte color)
+{
+ GetString(str_buffr, str);
+ assert(strlen(str_buffr) < sizeof(str_buffr) - 1);
+ return DoDrawString(str_buffr, x, y, color);
+}
+
+
+void DrawStringRightAligned(int x, int y, uint16 str, byte color)
+{
+ GetString(str_buffr, str);
+ assert(strlen(str_buffr) < sizeof(str_buffr) - 1);
+ DoDrawString(str_buffr, x - GetStringWidth(str_buffr), y, color);
+}
+
+
+int DrawStringCentered(int x, int y, uint16 str, byte color)
+{
+ int w;
+
+ GetString(str_buffr, str);
+ assert(strlen(str_buffr) < sizeof(str_buffr) - 1);
+
+ w = GetStringWidth(str_buffr);
+ DoDrawString(str_buffr, x - (w>>1), y, color);
+
+ return w;
+}
+
+void DrawStringCenterUnderline(int x, int y, uint16 str, byte color)
+{
+ int w = DrawStringCentered(x, y, str, color);
+ GfxFillRect(x-(w>>1), y+10, x-(w>>1)+w, y+10, _string_colorremap[1]);
+}
+
+uint32 FormatStringLinebreaks(byte *str, int maxw) {
+ int num = 0;
+ int base = _stringwidth_base;
+ int w;
+ byte *last_space;
+ byte c;
+
+ for(;;) {
+ w = 0;
+ last_space = NULL;
+
+ for(;;) {
+ c = *str++;
+ if (c == ' ') last_space = str;
+
+ if (c >= ASCII_LETTERSTART) {
+ w += _stringwidth_table[base + ((byte)c) - 0x20];
+ if (w > maxw) {
+ str = last_space;
+ if (str == NULL)
+ return num + (base << 16);
+ break;
+ }
+ } else {
+ if (c == 0) return num + (base << 16);
+ if (c == ASCII_NL) break;
+
+ if (c == ASCII_SETX) str++;
+ else if (c == ASCII_SETXY) str += 2;
+ else if (c == ASCII_TINYFONT) base = 224;
+ else if (c == ASCII_BIGFONT) base = 448;
+ }
+ }
+
+ num++;
+ str[-1] = 0;
+ }
+}
+
+
+void DrawStringMultiCenter(int x, int y, uint16 str, int maxw)
+{
+ uint32 tmp;
+ int num, w, mt, t;
+ byte *src;
+ byte c;
+
+ GetString(str_buffr, str);
+ assert(strlen(str_buffr) < sizeof(str_buffr) - 1);
+
+ tmp = FormatStringLinebreaks(str_buffr, maxw);
+ num = (uint16)tmp;
+ t = tmp >> 16;
+
+ mt = 10;
+ if (t != 0) {
+ mt = 6;
+ if (t != 244) mt = 18;
+ }
+
+ y -= (mt >> 1) * num;
+
+ src = str_buffr;
+
+ for(;;) {
+ w = GetStringWidth(src);
+ DoDrawString(src, x - (w>>1), y, 0xFE);
+ _stringwidth_base = _stringwidth_out;
+
+ for(;;) {
+ c = *src++;
+ if (c == 0) {
+ y += mt;
+ if (--num < 0) {
+ _stringwidth_base = 0;
+ return;
+ }
+ break;
+ } else if (c == ASCII_SETX) {
+ src++;
+ } else if (c == ASCII_SETXY) {
+ src+=2;
+ }
+ }
+ }
+}
+
+void DrawStringMultiLine(int x, int y, uint16 str, int maxw) {
+ uint32 tmp;
+ int num, w, mt, t;
+ byte *src;
+ byte c;
+
+ GetString(str_buffr, str);
+ assert(strlen(str_buffr) < sizeof(str_buffr) - 1);
+
+ tmp = FormatStringLinebreaks(str_buffr, maxw);
+ num = (uint16)tmp;
+ t = tmp >> 16;
+ mt = 10;
+ if (t != 0) {
+ mt = 6;
+ if (t != 244) mt = 18;
+ }
+
+ src = str_buffr;
+
+ for(;;) {
+ w = GetStringWidth(src);
+ DoDrawString(src, x, y, 0xFE);
+ _stringwidth_base = _stringwidth_out;
+
+ for(;;) {
+ c = *src++;
+ if (c == 0) {
+ y += mt;
+ if (--num < 0) {
+ _stringwidth_base = 0;
+ return;
+ }
+ break;
+ } else if (c == ASCII_SETX) {
+ src++;
+ } else if (c == ASCII_SETXY) {
+ src+=2;
+ }
+ }
+ }
+}
+
+int GetStringWidth(const byte *str) {
+ int w = -1;
+ byte c;
+ int base = _stringwidth_base;
+
+ for(;;) {
+ c = *str++;
+ if (c == 0)
+ return w;
+ if (c >= ASCII_LETTERSTART) {
+ w += _stringwidth_table[base + c - ASCII_LETTERSTART];
+ } else {
+ if (c == ASCII_SETX) str++;
+ else if (c == ASCII_SETXY) str += 2;
+ else if (c == ASCII_TINYFONT) base = 224;
+ else if (c == ASCII_BIGFONT) base = 448;
+ }
+ }
+}
+
+void DrawFrameRect(int left, int top, int right, int bottom, int ctab, int flags) {
+ byte color_2 = _color_list[ctab].window_color_1a;
+ byte color_interior = _color_list[ctab].window_color_bga;
+ byte color_3 = _color_list[ctab].window_color_bgb;
+ byte color = _color_list[ctab].window_color_2;
+
+ if (!(flags & 0x8)) {
+ if (!(flags & 0x20)) {
+ GfxFillRect(left, top, left, bottom-1, color);
+ GfxFillRect(left+1, top, right-1, top, color);
+ GfxFillRect(right, top, right, bottom-1, color_2);
+ GfxFillRect(left, bottom, right, bottom, color_2);
+ if (!(flags & 0x10)) {
+ GfxFillRect(left+1, top+1, right-1, bottom-1, color_interior);
+ }
+ } else {
+ GfxFillRect(left, top, left, bottom, color_2);
+ GfxFillRect(left+1, top, right, top, color_2);
+ GfxFillRect(right, top+1, right, bottom-1, color);
+ GfxFillRect(left+1, bottom, right, bottom, color);
+ if (!(flags & 0x10)) {
+ GfxFillRect(left+1, top+1, right-1, bottom-1,
+ flags&0x40 ? color_interior : color_3);
+ }
+ }
+ } else if (flags & 0x1) {
+ // transparency
+ GfxFillRect(left, top, right, bottom, 0x4322);
+ } else {
+ GfxFillRect(left, top, right, bottom, color_interior);
+ }
+}
+
+int DoDrawString(const byte *string, int x, int y, byte color) {
+ DrawPixelInfo *dpi = _cur_dpi;
+ int base = _stringwidth_base;
+ byte c, *b;
+ int xo = x, yo = y;
+
+ if (color != 0xFE) {
+ if (x >= dpi->left + dpi->width ||
+ x + _screen.width*2 <= dpi->left ||
+ y >= dpi->top + dpi->height ||
+ y + _screen.height <= dpi->top)
+ return x;
+
+ if (color != 0xFF) {
+switch_color:;
+ b = GetSpritePtr(674);
+ _string_colorremap[1] = b[color*2+8];
+ _string_colorremap[2] = b[color*2+9];
+ _color_remap_ptr = _string_colorremap;
+ }
+ }
+
+check_bounds:
+ if (y + 19 <= dpi->top || dpi->top + dpi->height <= y) {
+skip_char:;
+ for(;;) {
+ c = *string++;
+ if (c < ASCII_LETTERSTART) goto skip_cont;
+ }
+ }
+
+ for(;;) {
+ c = *string++;
+skip_cont:;
+ if (c == 0) {
+ _stringwidth_out = base;
+ return x;
+ }
+ if (c >= ASCII_LETTERSTART) {
+ if (x >= dpi->left + dpi->width) goto skip_char;
+ if (x + 26 >= dpi->left) {
+ GfxMainBlitter(GetSpritePtr(base + 2 + c - ASCII_LETTERSTART), x, y, 1);
+ }
+ x += _stringwidth_table[base + c - ' '];
+ } else if (c == ASCII_NL) { // newline = {}
+ x = xo;
+ y += 10;
+ if (base != 0) {
+ y -= 4;
+ if (base != 0xE0)
+ y += 12;
+ }
+ goto check_bounds;
+ } else if (c >= ASCII_COLORSTART) { // change color?
+ color = (byte)(c - ASCII_COLORSTART);
+ goto switch_color;
+ } else if (c == ASCII_SETX) { // {SETX}
+ x = xo + *string++;
+ } else if (c == ASCII_SETXY) {// {SETXY}
+ x = xo + *string++;
+ y = yo + *string++;
+ } else if (c == ASCII_TINYFONT) { // {TINYFONT}
+ base = 0xE0;
+ } else if (c == ASCII_BIGFONT) { // {BIGFONT}
+ base = 0x1C0;
+ } else {
+ printf("Unknown string command character %d\n", c);
+ }
+ }
+}
+
+void DrawSprite(uint32 img, int x, int y) {
+ if (img & 0x8000) {
+ _color_remap_ptr = GetSpritePtr(img >> 16) + 1;
+ GfxMainBlitter(GetSpritePtr(img & 0x3FFF), x, y, 1);
+ } else if (img & 0x4000) {
+ _color_remap_ptr = GetSpritePtr(img >> 16) + 1;
+ GfxMainBlitter(GetSpritePtr(img & 0x3FFF), x, y, 2);
+ } else {
+ GfxMainBlitter(GetSpritePtr(img & 0x3FFF), x, y, 0);
+ }
+}
+
+typedef struct BlitterParams {
+ int start_x, start_y;
+ byte *sprite, *sprite_org;
+ byte *dst;
+ int mode;
+ int width, height;
+ int width_org, height_org;
+ int pitch;
+ byte info;
+} BlitterParams;
+
+static void GfxBlitTileZoomIn(BlitterParams *bp)
+{
+ byte *src_o = bp->sprite, *src;
+ int num, skip;
+ byte done;
+ byte *dst, *ctab;
+
+ if (bp->mode & 1) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+
+ while (num >= 4) {
+ dst[3] = ctab[src[3]];
+ dst[2] = ctab[src[2]];
+ dst[1] = ctab[src[1]];
+ dst[0] = ctab[src[0]];
+ dst += 4;
+ src += 4;
+ num -= 4;
+ }
+ while (num) {
+ *dst++ = ctab[*src++];
+ num--;
+ }
+ } while (!(done & 0x80));
+
+ bp->dst += bp->pitch;
+ } while (--bp->height);
+ } else if (bp->mode & 2) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip;
+ } else {
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+ while (num) {
+ *dst = ctab[*dst];
+ dst++;
+ num--;
+ }
+ } while (!(done & 0x80));
+
+ bp->dst += bp->pitch;
+ } while (--bp->height);
+
+ } else {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+#if defined(_WIN32)
+ if (num & 1) *dst++ = *src++;
+ if (num & 2) { *(uint16*)dst = *(uint16*)src; dst += 2; src += 2; }
+ if (num >>= 2) {
+ do {
+ *(uint32*)dst = *(uint32*)src;
+ dst += 4;
+ src += 4;
+ } while (--num);
+ }
+#else
+ memcpy(dst, src, num);
+#endif
+ } while (!(done & 0x80));
+
+ bp->dst += bp->pitch;
+ } while (--bp->height);
+ }
+}
+
+static void GfxBlitZoomInUncomp(BlitterParams *bp)
+{
+ byte *src = bp->sprite;
+ byte *dst = bp->dst;
+ int height = bp->height;
+ int width = bp->width;
+ int i;
+
+ assert(height > 0);
+ assert(width > 0);
+
+ if (bp->mode & 1) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr;
+ byte b;
+
+ do {
+ for(i=0; i!=width; i++) {
+ if ((b=ctab[src[i]]) != 0)
+ dst[i] = b;
+ }
+ src += bp->width_org;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else if (bp->mode & 2) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr;
+ do {
+ for(i=0; i!=width; i++)
+ if (src[i])
+ dst[i] = ctab[dst[i]];
+ src += bp->width_org;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else {
+ if (!(bp->info & 1)) {
+ do {
+ memcpy(dst, src, width);
+ src += bp->width_org;
+ dst += bp->pitch;
+ } while (--height);
+ } else {
+ do {
+ int n = width;
+ while (n >= 4) {
+ if (src[0]) dst[0] = src[0];
+ if (src[1]) dst[1] = src[1];
+ if (src[2]) dst[2] = src[2];
+ if (src[3]) dst[3] = src[3];
+
+ dst += 4;
+ src += 4;
+ n -= 4;
+ }
+
+ while (n) {
+ if (src[0]) dst[0] = src[0];
+ src++;
+ dst++;
+ n--;
+ }
+
+ src += bp->width_org - width;
+ dst += bp->pitch - width;
+
+ } while (--height);
+ }
+ }
+}
+
+static void GfxBlitTileZoomMedium(BlitterParams *bp)
+{
+ byte *src_o = bp->sprite, *src;
+ int num, skip;
+ byte done;
+ byte *dst, *ctab;
+
+ if (bp->mode & 1) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ src++;
+ if (!--num)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 1;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+ num = (num + 1) >> 1;
+ if (num) {
+ do {
+ *dst = ctab[*src];
+ dst++;
+ src+=2;
+ } while (--num);
+ }
+ } while (!(done & 0x80));
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ } while (--bp->height);
+ } else if (bp->mode & 2) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ if (!--num)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 1;
+ } else {
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+ num = (num + 1) >> 1;
+ if (num) {
+ do {
+ *dst = ctab[*dst];
+ dst++;
+ } while (--num);
+ }
+
+ } while (!(done & 0x80));
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ } while (--bp->height);
+
+ } else {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ do {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ src++;
+ if (!--num)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 1;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ num = (num + 1) >> 1;
+
+ if (num) {
+ do {
+ *dst = *src;
+ dst++;
+ src+=2;
+ } while (--num);
+ }
+
+ } while (!(done & 0x80));
+
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+
+ } while (--bp->height);
+ }
+}
+
+static void GfxBlitZoomMediumUncomp(BlitterParams *bp)
+{
+ byte *src = bp->sprite;
+ byte *dst = bp->dst;
+ int height = bp->height;
+ int width = bp->width;
+ int i;
+
+ assert(height > 0);
+ assert(width > 0);
+
+ if (bp->mode & 1) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr,b;
+ height >>= 1;
+ if (height) do {
+ for(i=0; i!=width>>1; i++)
+ if ((b=ctab[src[i*2]]) != 0)
+ dst[i] = b;
+ src += bp->width_org * 2;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else if (bp->mode & 2) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr;
+ height >>= 1;
+ if (height) do {
+ for(i=0; i!=width>>1; i++)
+ if (src[i*2])
+ dst[i] = ctab[dst[i]];
+ src += bp->width_org * 2;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else {
+ if (bp->info & 1) {
+ height >>= 1;
+ if (height) do {
+ for(i=0; i!=width>>1; i++)
+ if (src[i*2])
+ dst[i] = src[i*2];
+ src += bp->width_org * 2;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ }
+}
+
+static void GfxBlitTileZoomOut(BlitterParams *bp)
+{
+ byte *src_o = bp->sprite, *src;
+ int num, skip;
+ byte done;
+ byte *dst, *ctab;
+
+ if (bp->mode & 1) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ for(;;) {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ src++;
+ if (!--num)
+ continue;
+ }
+
+ if (skip & 2) {
+ skip+=2;
+ src+=2;
+ if ((num-=2) <= 0)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 2;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+ num = (num + 3) >> 2;
+ if (num) {
+ do {
+ *dst = ctab[*src];
+ dst++;
+ src+=4;
+ } while (--num);
+ }
+ } while (!(done & 0x80));
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+ }
+ } else if (bp->mode & 2) {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ for(;;) {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ if (!--num)
+ continue;
+ }
+
+ if (skip & 2) {
+ skip+=2;
+ if ((num-=2) <= 0)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 2;
+ } else {
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ ctab = _color_remap_ptr;
+ num = (num + 3) >> 2;
+ if (num) {
+ do {
+ *dst = ctab[*dst];
+ dst++;
+ } while (--num);
+ }
+
+ } while (!(done & 0x80));
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+ }
+ } else {
+ src_o += READ_LE_UINT16(src_o + bp->start_y * 2);
+ for(;;) {
+ do {
+ done = src_o[0];
+ num = done & 0x7F;
+ skip = src_o[1];
+ src = src_o + 2;
+ src_o += num + 2;
+
+ dst = bp->dst;
+
+ if (skip & 1) {
+ skip++;
+ src++;
+ if (!--num)
+ continue;
+ }
+
+ if (skip & 2) {
+ skip+=2;
+ src+=2;
+ if ((num-=2) <= 0)
+ continue;
+ }
+
+ if ( (skip -= bp->start_x) > 0) {
+ dst += skip >> 2;
+ } else {
+ src -= skip;
+ num += skip;
+ if (num <= 0)
+ continue;
+ skip = 0;
+ }
+
+ skip = skip + num - bp->width;
+ if (skip > 0) {
+ num -= skip;
+ if (num <= 0)
+ continue;
+ }
+
+ num = (num + 3) >> 2;
+
+ if (num) {
+ do {
+ *dst = *src;
+ dst++;
+ src+=4;
+ } while (--num);
+ }
+
+ } while (!(done & 0x80));
+
+ bp->dst += bp->pitch;
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+
+ do {
+ done = src_o[0];
+ src_o += (done & 0x7F) + 2;
+ } while (!(done & 0x80));
+ if (!--bp->height)
+ return;
+ }
+ }
+}
+
+static void GfxBlitZoomOutUncomp(BlitterParams *bp)
+{
+ byte *src = bp->sprite;
+ byte *dst = bp->dst;
+ int height = bp->height;
+ int width = bp->width;
+ int i;
+
+ assert(height > 0);
+ assert(width > 0);
+
+ if (bp->mode & 1) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr,b;
+ height >>= 2;
+ if (height) do {
+ for(i=0; i!=width>>2; i++)
+ if ((b=ctab[src[i*4]]) != 0)
+ dst[i] = b;
+ src += bp->width_org * 4;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else if (bp->mode & 2) {
+ if (bp->info & 1) {
+ byte *ctab = _color_remap_ptr;
+ height >>= 2;
+ if (height) do {
+ for(i=0; i!=width>>2; i++)
+ if (src[i*4])
+ dst[i] = ctab[dst[i]];
+ src += bp->width_org * 4;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ } else {
+ if (bp->info & 1) {
+ height >>= 2;
+ if (height) do {
+ for(i=0; i!=width>>2; i++)
+ if (src[i*4])
+ dst[i] = src[i*4];
+ src += bp->width_org * 4;
+ dst += bp->pitch;
+ } while (--height);
+ }
+ }
+}
+
+typedef void (*BlitZoomFunc)(BlitterParams *bp);
+
+static void GfxMainBlitter(byte *sprite, int x, int y, int mode)
+{
+ DrawPixelInfo *dpi = _cur_dpi;
+ int start_x, start_y;
+ byte info;
+ BlitterParams bp;
+ int zoom_mask = ~((1 << (dpi->zoom))-1);
+
+ static const BlitZoomFunc zf_tile[3] =
+ {
+ GfxBlitTileZoomIn,
+ GfxBlitTileZoomMedium,
+ GfxBlitTileZoomOut
+ };
+ static const BlitZoomFunc zf_uncomp[3] =
+ {
+ GfxBlitZoomInUncomp,
+ GfxBlitZoomMediumUncomp,
+ GfxBlitZoomOutUncomp
+ };
+
+ /* decode sprite header */
+ x += (int16)READ_LE_UINT16(&((SpriteHdr*)sprite)->x_offs);
+ y += (int16)READ_LE_UINT16(&((SpriteHdr*)sprite)->y_offs);
+ bp.width_org = bp.width = READ_LE_UINT16(&((SpriteHdr*)sprite)->width);
+ bp.height_org = bp.height = ((SpriteHdr*)sprite)->height;
+ info = ((SpriteHdr*)sprite)->info;
+ bp.info = info;
+ bp.sprite_org = bp.sprite = sprite + sizeof(SpriteHdr);
+ bp.dst = dpi->dst_ptr;
+ bp.mode = mode;
+ bp.pitch = dpi->pitch;
+
+ assert(bp.height > 0);
+ assert(bp.width > 0);
+
+ if (info & 8) {
+ /* tile blit */
+ start_y = 0;
+
+ if (dpi->zoom > 0) {
+ start_y += bp.height &~ zoom_mask;
+ bp.height &= zoom_mask;
+ if (bp.height == 0) return;
+ y&=zoom_mask;
+ }
+
+ if ( (y -= dpi->top) < 0) {
+ if ((bp.height += y) <= 0)
+ return;
+ start_y -= y;
+ y = 0;
+ } else {
+ bp.dst += bp.pitch * (y>>(dpi->zoom));
+ }
+ bp.start_y = start_y;
+
+ if ( (y = y + bp.height - dpi->height) > 0) {
+ if ( (bp.height -= y) <= 0)
+ return;
+ }
+
+ start_x = 0;
+ x &= zoom_mask;
+ if ( (x -= dpi->left) < 0) {
+ if ((bp.width += x) <= 0)
+ return;
+ start_x -= x;
+ x = 0;
+ }
+ bp.start_x = start_x;
+ bp.dst += x>>(dpi->zoom);
+
+ if ( (x = x + bp.width - dpi->width) > 0) {
+ if ( (bp.width -= x) <= 0)
+ return;
+ }
+
+ zf_tile[dpi->zoom](&bp);
+ } else {
+
+ bp.sprite += bp.width * (bp.height & ~zoom_mask);
+ bp.height &= zoom_mask;
+ if (bp.height == 0)
+ return;
+
+ y &= zoom_mask;
+
+ if ( (y -= dpi->top) < 0) {
+ if ((bp.height += y) <= 0)
+ return;
+ bp.sprite -= bp.width * y;
+ y = 0;
+ } else {
+ bp.dst += bp.pitch * (y>>(dpi->zoom));
+ }
+
+ if ( (y = y + bp.height - dpi->height) > 0) {
+ if ( (bp.height -= y) <= 0)
+ return;
+ }
+
+ start_x = 0;
+
+ x &= zoom_mask;
+
+ if ( (x -= dpi->left) < 0) {
+ if ((bp.width += x) <= 0)
+ return;
+ start_x -= x;
+ bp.sprite -= x;
+ x = 0;
+ }
+ bp.dst += x>>(dpi->zoom);
+
+ if ( (x = x + bp.width - dpi->width) > 0) {
+ if ( (bp.width -= x) <= 0)
+ return;
+ start_x += x;
+ }
+ bp.start_x = start_x;
+
+ if (info&2) {
+ int totpix = bp.height_org * bp.width_org;
+ byte *dst = (byte*)alloca(totpix);
+ byte *src = bp.sprite_org;
+ signed char b;
+
+ bp.sprite += (dst - src);
+
+ while (totpix != 0) {
+ assert(totpix > 0);
+ b = *src++;
+ if (b >= 0) {
+ int i, count=b;
+ for(i=0; i!=count; i++)
+ dst[i] = src[i];
+ dst += count;
+ src += count;
+ totpix -= count;
+ } else {
+ byte *tmp = dst- (((b&7)<<8)|(*src++));
+ int i;
+ int count = -(b >> 3);
+
+ for(i=0; i!=count; i++)
+ dst[i] = tmp[i];
+ dst += count;
+ totpix -= count;
+ }
+ }
+ }
+ zf_uncomp[dpi->zoom](&bp);
+ }
+}
+
+
+void GfxScalePalette(int pal, byte scaling)
+{
+ byte *dst, *src;
+ size_t count;
+
+ GfxInitPalettes();
+
+ dst = _cur_palette;
+ src = GET_PALETTE(pal);
+ count = 256;
+ do {
+ dst[0] = (byte)(src[0] * scaling >> 8);
+ dst[1] = (byte)(src[1] * scaling >> 8);
+ dst[2] = (byte)(src[2] * scaling >> 8);
+ dst += 3;
+ src += 3;
+ } while (--count);
+}
+
+void GfxInitPalettes()
+{
+ memcpy(_cur_palette, _palettes[0], 256*3);
+ _pal_first_dirty = 0;
+ _pal_last_dirty = 255;
+}
+
+
+#define EXTR(p,q) (((uint16)(_timer_counter * (p)) * (q)) >> 16)
+#define EXTR2(p,q) (((uint16)(~_timer_counter * (p)) * (q)) >> 16)
+#define COPY_TRIPLET do {d[0]=s[0+j]; d[1]=s[1+j]; d[2]=s[2+j];d+=3;}while(0)
+
+void DoPaletteAnimations()
+{
+ const byte *s;
+ byte *d;
+ int j;
+ int i;
+ const ExtraPaletteValues *ev = &_extra_palette_values;
+ byte old_val[28*3];
+
+ d = _cur_palette + 217*3;
+ memcpy(old_val, d, 28*3);
+
+ // Dark blue water
+ s = ev->a;
+ if (_opt.landscape == LT_CANDY) s = ev->ac;
+ j = EXTR(320,5) * 3;
+ for(i=0; i!=5; i++) {
+ COPY_TRIPLET;
+ j+=3;
+ if (j == 15) j = 0;
+ }
+
+ // Glittery water
+ s = ev->b;
+ if (_opt.landscape == LT_CANDY) s = ev->bc;
+ j = EXTR(128, 15) * 3;
+ for(i=0; i!=5; i++) {
+ COPY_TRIPLET;
+ j += 9;
+ if (j >= 45) j -= 45;
+ }
+
+ s = ev->e;
+ j = EXTR2(512, 5) * 3;
+ for(i=0; i!=5; i++) {
+ COPY_TRIPLET;
+ j += 3;
+ if (j == 3*5) j = 0;
+ }
+
+ // Oil refinery fire animation
+ s = ev->oil_ref;
+ j = EXTR2(512, 7) * 3;
+ for(i=0; i!=7; i++) {
+ COPY_TRIPLET;
+ j += 3;
+ if (j == 3*7) j = 0;
+ }
+
+ // Radio tower blinking
+ {
+ byte i,v;
+ i = (_timer_counter >> 1) & 0x7F;
+ (v = 255, i < 0x3f) ||
+ (v = 128, i < 0x4A || i >= 0x75) ||
+ (v = 20);
+ d[0] = v;
+ d[1] = d[2] = 0;
+ d += 3;
+
+ i ^= 0x40;
+ (v = 255, i < 0x3f) ||
+ (v = 128, i < 0x4A || i >= 0x75) ||
+ (v = 20);
+ d[0] = v;
+
+ d[1] = d[2] = 0;
+ d += 3;
+ }
+
+ // Handle lighthouse and stadium animation
+ s = ev->lighthouse;
+ j = EXTR(256, 4) * 3;
+ for(i=0; i!=4; i++) {
+ COPY_TRIPLET;
+ j += 3;
+ if (j == 3*4) j = 0;
+ }
+
+ if (memcmp(old_val, _cur_palette + 217*3, 28*3)) {
+ if (_pal_first_dirty > 217) _pal_first_dirty = 217;
+ if (_pal_last_dirty < 217+29-1) _pal_last_dirty = 217+29-1;
+ }
+}
+
+
+void LoadStringWidthTable()
+{
+ int i;
+ byte *b;
+
+ b = _stringwidth_table;
+
+ // 2 equals space.
+ for(i=2; i != 0xE2; i++) {
+ *b++ = (byte)((i < 93 || i >= 129 || i == 98) ? GetSpritePtr(i)[2] : 0);
+ }
+
+ for(i=0xE2; i != 0x1C2; i++) {
+ *b++ = (byte)((i < 317 || i >= 353) ? GetSpritePtr(i)[2]+1 : 0);
+ }
+
+ for(i=0x1C2; i != 0x2A2; i++) {
+ *b++ = (byte)((i < 541 || i >= 577) ? GetSpritePtr(i)[2]+1 : 0);
+ }
+}
+
+void ScreenSizeChanged()
+{
+ // check the dirty rect
+ if (_invalid_rect.right >= _screen.width) _invalid_rect.right = _screen.width;
+ if (_invalid_rect.bottom >= _screen.height) _invalid_rect.bottom = _screen.height;
+
+ // screen size changed and the old bitmap is invalid now, so we don't want to undraw it
+ _cursor.visible = false;
+}
+
+void UndrawMouseCursor()
+{
+ if (_cursor.visible) {
+ _cursor.visible = false;
+ memcpy_pitch(
+ _screen.dst_ptr + _cursor.draw_pos.x + _cursor.draw_pos.y * _screen.pitch,
+ _cursor_backup,
+ _cursor.draw_size.x, _cursor.draw_size.y, _cursor.draw_size.x, _screen.pitch);
+
+ _video_driver->make_dirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
+ }
+}
+
+void DrawMouseCursor()
+{
+ int x,y,w,h;
+
+ // Don't draw the mouse cursor if it's already drawn
+ if (_cursor.visible) {
+ if (!_cursor.dirty)
+ return;
+ UndrawMouseCursor();
+ }
+
+ w = _cursor.size.x;
+ x = _cursor.pos.x + _cursor.offs.x;
+ if (x < 0) { w += x; x=0; }
+ if (w>_screen.width-x) { w = _screen.width-x; }
+ if (w <= 0) return;
+ _cursor.draw_pos.x = x;
+ _cursor.draw_size.x = w;
+
+ h = _cursor.size.y;
+ y = _cursor.pos.y + _cursor.offs.y;
+ if (y < 0) { h += y; y=0; }
+ if (h>_screen.height-y) { h = _screen.height-y; }
+ if (h <= 0) return;
+ _cursor.draw_pos.y = y;
+ _cursor.draw_size.y = h;
+
+ assert(w*h < sizeof(_cursor_backup));
+
+ // Make backup of stuff below cursor
+ memcpy_pitch(
+ _cursor_backup,
+ _screen.dst_ptr + _cursor.draw_pos.x + _cursor.draw_pos.y * _screen.pitch,
+ _cursor.draw_size.x, _cursor.draw_size.y, _screen.width, _cursor.draw_size.x);
+
+ // Draw cursor on screen
+ _cur_dpi = &_screen;
+ DrawSprite(_cursor.sprite, _cursor.pos.x, _cursor.pos.y);
+
+ _video_driver->make_dirty(_cursor.draw_pos.x, _cursor.draw_pos.y, _cursor.draw_size.x, _cursor.draw_size.y);
+
+ _cursor.visible = true;
+ _cursor.dirty = false;
+}
+
+void DbgScreenRect(int left, int top, int right, int bottom)
+{
+ DrawPixelInfo dp,*old;
+
+ old = _cur_dpi;
+ _cur_dpi = &dp;
+ dp = _screen;
+ GfxFillRect(left, top, right-1, bottom-1, rand() & 255);
+ _cur_dpi = old;
+}
+
+extern bool _dbg_screen_rect;
+
+void RedrawScreenRect(int left, int top, int right, int bottom)
+{
+ assert(right <= _screen.width && bottom <= _screen.height);
+ if (_cursor.visible) {
+ if (right > _cursor.draw_pos.x &&
+ left < _cursor.draw_pos.x + _cursor.draw_size.x &&
+ bottom > _cursor.draw_pos.y &&
+ top < _cursor.draw_pos.y + _cursor.draw_size.y) {
+ UndrawMouseCursor();
+ }
+ }
+
+#if defined(_DEBUG)
+ if (_dbg_screen_rect)
+ DbgScreenRect(left, top, right, bottom);
+ else
+#endif
+ DrawOverlappedWindowForAll(left, top, right, bottom);
+
+ _video_driver->make_dirty(left, top, right-left, bottom-top);
+}
+
+void DrawDirtyBlocks()
+{
+ byte *b = _dirty_blocks;
+ int x=0,y=0;
+ int w = (_screen.width + 63) & ~63;
+ int h = _screen.height;
+
+ do {
+ if (*b != 0) {
+ int left,top;
+ int right = x + 64;
+ int bottom = y;
+ byte *p = b;
+ int h2;
+ // First try coalescing downwards
+ do {
+ *p = 0;
+ p += DIRTY_BYTES_PER_LINE;
+ bottom += 8;
+ } while (bottom != h && *p);
+
+ // Try coalescing to the right too.
+ h2 = (bottom - y) >> 3;
+ assert(h2>0);
+ p = b;
+
+ while (right != w) {
+ byte *p2 = ++p;
+ int h = h2;
+ // Check if a full line of dirty flags is set.
+ do {
+ if (!*p2) goto no_more_coalesc;
+ p2 += DIRTY_BYTES_PER_LINE;
+ } while (--h);
+
+ // Wohoo, can combine it one step to the right!
+ // Do that, and clear the bits.
+ right += 64;
+
+ h = h2;
+ p2 = p;
+ do {
+ *p2 = 0;
+ p2 += DIRTY_BYTES_PER_LINE;
+ } while (--h);
+ }
+ no_more_coalesc:;
+
+ left = x;
+ top = y;
+
+ if (left < _invalid_rect.left)left = _invalid_rect.left;
+ if (top < _invalid_rect.top) top = _invalid_rect.top;
+ if (right > _invalid_rect.right)right = _invalid_rect.right;
+ if (bottom > _invalid_rect.bottom)bottom = _invalid_rect.bottom;
+
+ if (left < right && top < bottom) {
+ RedrawScreenRect(left, top, right, bottom);
+ }
+
+ }
+ } while (b++, (x+=64) != w || (x=0,b+=-(w>>6)+DIRTY_BYTES_PER_LINE,(y+=8) != h));
+
+ _invalid_rect.left = w;
+ _invalid_rect.top = h;
+ _invalid_rect.right = 0;
+ _invalid_rect.bottom = 0;
+}
+
+
+void SetDirtyBlocks(int left, int top, int right, int bottom)
+{
+ byte *b;
+ int width,height,i;
+
+ if (left < 0) left = 0;
+ if (top < 0) top = 0;
+ if (right > _screen.width) right = _screen.width;
+ if (bottom > _screen.height) bottom = _screen.height;
+
+ if (left >= right || top >= bottom)
+ return;
+
+ if (left < _invalid_rect.left) _invalid_rect.left = left;
+ if (top < _invalid_rect.top) _invalid_rect.top = top;
+ if (right > _invalid_rect.right)_invalid_rect.right = right;
+ if (bottom > _invalid_rect.bottom)_invalid_rect.bottom = bottom;
+
+ left >>= 6;
+ top >>= 3;
+
+ b = _dirty_blocks + top * DIRTY_BYTES_PER_LINE + left;
+
+ width = ((right-1) >> 6) - left + 1;
+ height = ((bottom-1) >> 3) - top + 1;
+
+ assert(width > 0 && height > 0);
+
+ do {
+ i=width;
+ do b[--i] = 0xFF; while (i);
+
+ b += DIRTY_BYTES_PER_LINE;
+ } while (--height);
+}
+
+void MarkWholeScreenDirty()
+{
+ SetDirtyBlocks(0, 0, _screen.width, _screen.height);
+}
+
+bool FillDrawPixelInfo(DrawPixelInfo *n, DrawPixelInfo *o, int left, int top, int width, int height)
+{
+ int t;
+
+ if (o == NULL)
+ o = _cur_dpi;
+
+ n->zoom = 0;
+
+ assert(width > 0);
+ assert(height > 0);
+
+ n->left = 0;
+ if ((left -= o->left) < 0) {
+ if ((width += left) < 0)
+ return false;
+ n->left = -left;
+ left = 0;
+ }
+
+ if ((t=width + left - o->width) > 0) {
+ if ((width -= t) < 0)
+ return false;
+ }
+ n->width = width;
+
+ n->top = 0;
+ if ((top -= o->top) < 0) {
+ if ((height += top) < 0)
+ return false;
+ n->top = -top;
+ top = 0;
+ }
+
+ n->dst_ptr = o->dst_ptr + left + top * (n->pitch = o->pitch);
+
+ if ((t=height + top - o->height) > 0) {
+ if ((height-=t) < 0)
+ return false;
+ }
+ n->height = height;
+
+
+ return true;
+}
+
+static void SetCursorSprite(uint cursor)
+{
+ CursorVars *cv = &_cursor;
+ byte *p;
+
+ if (cv->sprite == cursor)
+ return;
+
+ p = GetSpritePtr(cursor & 0x3FFF);
+ cv->sprite = cursor;
+ cv->size.y = *(byte*)(p+1);
+ cv->size.x = READ_LE_UINT16(p+2);
+ cv->offs.x = (int16)READ_LE_UINT16(p+4);
+ cv->offs.y = (int16)READ_LE_UINT16(p+6);
+
+ cv->dirty = true;
+}
+
+static void SwitchAnimatedCursor()
+{
+ CursorVars *cv = &_cursor;
+ const uint16 *cur;
+ uint sprite;
+
+ cur = cv->animate_cur;
+ if (cur == NULL || *cur == 0xFFFF)
+ cur = cv->animate_list;
+ sprite = cur[0];
+ cv->animate_timeout = cur[1];
+ cv->animate_cur = cur + 2;
+
+ SetCursorSprite(sprite);
+}
+
+void CursorTick() {
+ CursorVars *cv = &_cursor;
+ if (cv->animate_timeout && !--cv->animate_timeout)
+ SwitchAnimatedCursor();
+}
+
+void SetMouseCursor(uint cursor)
+{
+ // Turn off animation
+ _cursor.animate_timeout = 0;
+ // Set cursor
+ SetCursorSprite(cursor);
+}
+
+void SetAnimatedMouseCursor(const uint16 *table)
+{
+ _cursor.animate_list = table;
+ _cursor.animate_cur = NULL;
+ SwitchAnimatedCursor();
+}
+
+bool ChangeResInGame(int w, int h)
+{
+ if ((_screen.width != w || _screen.height != h) && !_video_driver->change_resolution(w, h))
+ return false;
+
+ _cur_resolution[0] = w;
+ _cur_resolution[1] = h;
+ return true;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-19 03:17:41 +0000