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engines/ags/shared/util/wgt2_allg.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ags/shared/util/wgt2_allg.h"
+#include "ags/shared/gfx/bitmap.h"
+#include "ags/globals.h"
+
+namespace AGS3 {
+
+using namespace AGS::Shared;
+
+void wsetrgb(int coll, int r, int g, int b, RGB *pall) {
+	pall[coll].r = r;
+	pall[coll].g = g;
+	pall[coll].b = b;
+}
+
+void wcolrotate(unsigned char start, unsigned char finish, int dir, RGB *pall) {
+	int jj;
+	if (dir == 0) {
+		// rotate left
+		RGB tempp = pall[start];
+
+		for (jj = start; jj < finish; jj++)
+			pall[jj] = pall[jj + 1];
+
+		pall[finish] = tempp;
+	} else {
+		// rotate right
+		RGB tempp = pall[finish];
+
+		for (jj = finish - 1; jj >= start; jj--)
+			pall[jj + 1] = pall[jj];
+
+		pall[start] = tempp;
+	}
+}
+
+Bitmap *wnewblock(Bitmap *src, int x1, int y1, int x2, int y2) {
+	Bitmap *tempbitm;
+	int twid = (x2 - x1) + 1, thit = (y2 - y1) + 1;
+
+	if (twid < 1)
+		twid = 1;
+
+	if (thit < 1)
+		thit = 1;
+
+	tempbitm = BitmapHelper::CreateBitmap(twid, thit);
+
+	if (tempbitm == nullptr)
+		return nullptr;
+
+	tempbitm->Blit(src, x1, y1, 0, 0, tempbitm->GetWidth(), tempbitm->GetHeight());
+	return tempbitm;
+}
+
+void wputblock(Bitmap *ds, int xx, int yy, Bitmap *bll, int xray) {
+	if (xray)
+		ds->Blit(bll, xx, yy, kBitmap_Transparency);
+	else
+		ds->Blit(bll, 0, 0, xx, yy, bll->GetWidth(), bll->GetHeight());
+}
+
+void wputblock_raw(Bitmap *ds, int xx, int yy, BITMAP *bll, int xray) {
+	_G(wputblock_wrapper).WrapAllegroBitmap(bll, true);
+	if (xray)
+		ds->Blit(&_G(wputblock_wrapper), xx, yy, kBitmap_Transparency);
+	else
+		ds->Blit(&_G(wputblock_wrapper), 0, 0, xx, yy, _G(wputblock_wrapper).GetWidth(), _G(wputblock_wrapper).GetHeight());
+}
+
+const int col_lookups[32] = {
+	0x000000, 0x0000A0, 0x00A000, 0x00A0A0, 0xA00000,   // 4
+	0xA000A0, 0xA05000, 0xA0A0A0, 0x505050, 0x5050FF, 0x50FF50, 0x50FFFF,       // 11
+	0xFF5050, 0xFF50FF, 0xFFFF50, 0xFFFFFF, 0x000000, 0x101010, 0x202020,       // 18
+	0x303030, 0x404040, 0x505050, 0x606060, 0x707070, 0x808080, 0x909090,       // 25
+	0xA0A0A0, 0xB0B0B0, 0xC0C0C0, 0xD0D0D0, 0xE0E0E0, 0xF0F0F0
+};
+
+int __wremap_keep_transparent = 1;
+
+void wremap(RGB *pal1, Bitmap *picc, RGB *pal2) {
+	int jj;
+	unsigned char color_mapped_table[256];
+
+	for (jj = 0; jj < 256; jj++) {
+		if ((pal1[jj].r == 0) && (pal1[jj].g == 0) && (pal1[jj].b == 0)) {
+			color_mapped_table[jj] = 0;
+		} else {
+			color_mapped_table[jj] = bestfit_color(pal2, pal1[jj].r, pal1[jj].g, pal1[jj].b);
+		}
+	}
+
+	if (__wremap_keep_transparent > 0) {
+		// keep transparency
+		color_mapped_table[0] = 0;
+		// any other pixels which are being mapped to 0, map to 16 instead
+		for (jj = 1; jj < 256; jj++) {
+			if (color_mapped_table[jj] == 0)
+				color_mapped_table[jj] = 16;
+		}
+	}
+
+	int pic_size = picc->GetWidth() * picc->GetHeight();
+	for (jj = 0; jj < pic_size; jj++) {
+		int xxl = jj % (picc->GetWidth()), yyl = jj / (picc->GetWidth());
+		int rr = picc->GetPixel(xxl, yyl);
+		picc->PutPixel(xxl, yyl, color_mapped_table[rr]);
+	}
+}
+
+void wremapall(RGB *pal1, Bitmap *picc, RGB *pal2) {
+	__wremap_keep_transparent--;
+	wremap(pal1, picc, pal2);
+	__wremap_keep_transparent++;
+}
+
+} // namespace AGS3