Replace all explosion sparks with new element (EMBR)

Replaces: BOMB sparks and flash, electrons + glass sparks, sparks from
IGNC, sparks from TNT explosion, and sparks from FWRK and FIRW.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/elements/embr.c b/src/elements/embr.c
new file mode 100644
index 0000000..16c4e70
--- /dev/null
+++ b/src/elements/embr.c
@@ -0,0 +1,94 @@
+/*
+ * 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 <element.h>
+
+/* ctype - colour RRGGBB (optional)
+ * life - decremented each frame, disappears when life reaches zero
+ * tmp - mode
+ *   0 - BOMB sparks
+ *   1 - firework sparks (colour defaults to white)
+ *   2 - flash (colour defaults to white)
+ */
+int update_EMBR(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, nb;
+	for (rx=-1; rx<2; rx++)
+		for (ry=-1; ry<2; ry++)
+			if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+			{
+				r = pmap[y+ry][x+rx];
+				if (!r)
+					continue;
+				if ((ptypes[r&0xFF].properties & (TYPE_SOLID | TYPE_PART | TYPE_LIQUID)) && !(ptypes[r&0xFF].properties & PROP_SPARKSETTLE))
+				{
+					kill_part(i);
+					return 1;
+				}
+			}
+	return 0;
+}
+int graphics_EMBR(GRAPHICS_FUNC_ARGS)
+{
+	if (cpart->ctype&0xFFFFFF)
+	{
+		int maxComponent;
+		*colr = (cpart->ctype&0xFF0000)>>16;
+		*colg = (cpart->ctype&0x00FF00)>>8;
+		*colb = (cpart->ctype&0x0000FF);
+		maxComponent = *colr;
+		if (*colg>maxComponent) maxComponent = *colg;
+		if (*colb>maxComponent) maxComponent = *colb;
+		if (maxComponent<60)//make sure it isn't too dark to see
+		{
+			float multiplier = 60.0f/maxComponent;
+			*colr *= multiplier;
+			*colg *= multiplier;
+			*colb *= multiplier;
+		}
+	}
+	else if (cpart->tmp != 0)
+	{
+		*colr = *colg = *colb = 255;
+	}
+
+	if (decorations_enable && cpart->dcolour)
+	{
+		int a = (cpart->dcolour>>24)&0xFF;
+		*colr = (a*((cpart->dcolour>>16)&0xFF) + (255-a)**colr) >> 8;
+		*colg = (a*((cpart->dcolour>>8)&0xFF) + (255-a)**colg) >> 8;
+		*colb = (a*((cpart->dcolour)&0xFF) + (255-a)**colb) >> 8;
+	}
+	*firer = *colr;
+	*fireg = *colg;
+	*fireb = *colb;
+
+	if (cpart->tmp==1)
+	{
+		*pixel_mode = FIRE_ADD | PMODE_BLEND | PMODE_GLOW;
+		*firea = (cpart->life-15)*4;
+		*cola = (cpart->life+15)*4;
+	}
+	else if (cpart->tmp==2)
+	{
+		*pixel_mode = PMODE_FLAT | FIRE_ADD;
+		*firea = 255;
+	}
+	else
+	{
+		*pixel_mode = PMODE_SPARK | PMODE_ADD;
+		if (cpart->life<64) *cola = 4*cpart->life;
+	}
+	return 0;
+}