From a7ede2659ab354d36d9cf21bba040da884cc0357 Mon Sep 17 00:00:00 2001
From: jacksonmj <mj-pt@jacksonmj.co.uk>
Date: Tue, 30 Aug 2011 17:59:47 +0800
Subject: [PATCH] Allow decoration layer to affect firework explosion colour

---
 src/elements/firw.c | 22 ++++++++++------------
 src/elements/fwrk.c |  2 ++
 src/graphics.c      | 27 ++++++++++++++++++++++-----
 3 files changed, 34 insertions(+), 17 deletions(-)

diff --git a/src/elements/firw.c b/src/elements/firw.c
index 9c8f54691..7415dcdfa 100644
--- a/src/elements/firw.c
+++ b/src/elements/firw.c
@@ -1,7 +1,7 @@
 #include <element.h>
 
 int update_FIRW(UPDATE_FUNC_ARGS) {
-	int r, rx, ry, rt;
+	int r, rx, ry, rt, np;
 	if (parts[i].tmp==0) {
 		for (rx=-1; rx<2; rx++)
 			for (ry=-1; ry<2; ry++)
@@ -40,18 +40,16 @@ int update_FIRW(UPDATE_FUNC_ARGS) {
 			for (ry=-2; ry<3; ry++)
 				if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
 				{
-					r = pmap[y+ry][x+rx];
 					tmul = rand()%7;
-					create_part(-1, x+rx, y+ry, PT_FIRW);
-					r = pmap[y+ry][x+rx];
-					if (!r)
-						continue;
-					if ((r&0xFF)==PT_FIRW) {
-						parts[r>>8].vx = (rand()%3-1)*tmul;
-						parts[r>>8].vy = (rand()%3-1)*tmul;
-						parts[r>>8].tmp = col;
-						parts[r>>8].life = rand()%100+100;
-						parts[r>>8].temp = 6000.0f;
+					np = create_part(-1, x+rx, y+ry, PT_FIRW);
+					if (np>-1)
+					{
+						parts[np].vx = (rand()%3-1)*tmul;
+						parts[np].vy = (rand()%3-1)*tmul;
+						parts[np].tmp = col;
+						parts[np].life = rand()%100+100;
+						parts[np].temp = 6000.0f;
+						parts[np].dcolour = parts[i].dcolour;
 					}
 				}
 		pv[y/CELL][x/CELL] += 20;
diff --git a/src/elements/fwrk.c b/src/elements/fwrk.c
index 5095cde5e..0fa744ff7 100644
--- a/src/elements/fwrk.c
+++ b/src/elements/fwrk.c
@@ -10,6 +10,7 @@ int update_FWRK(UPDATE_FUNC_ARGS) {
 			parts[np].vy = rand()%8-22;
 			parts[np].vx = rand()%20-rand()%20;
 			parts[np].life=rand()%15+25;
+			parts[np].dcolour = parts[i].dcolour;
 			kill_part(i);
 			return 1;
 		}
@@ -40,6 +41,7 @@ int update_FWRK(UPDATE_FUNC_ARGS) {
 								parts[np].flags=w;
 								parts[np].ctype=e;
 								parts[np].temp= rand()%20+6000;
+								parts[np].dcolour = parts[i].dcolour;
 							}
 						}
 					}
diff --git a/src/graphics.c b/src/graphics.c
index 538c888ef..d8798c185 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -2264,12 +2264,22 @@ void draw_parts(pixel *vid)
 				{
 					x = nx;
 					y = ny;
+					cr = parts[i].flags;
+					cg = parts[i].tmp;
+					cb = parts[i].ctype;
+					if (decorations_enable && parts[i].dcolour)
+					{
+						int a = (parts[i].dcolour>>24)&0xFF;
+						cr = (a*((parts[i].dcolour>>16)&0xFF) + (255-a)*cr) >> 8;
+						cg = (a*((parts[i].dcolour>>8)&0xFF) + (255-a)*cg) >> 8;
+						cb = (a*((parts[i].dcolour)&0xFF) + (255-a)*cb) >> 8;
+					}
 					if (cmode == CM_FIRE||cmode==CM_BLOB || cmode==CM_FANCY)
 					{
-						vid[ny*(XRES+BARSIZE)+nx] = PIXRGB(parts[i].tmp,parts[i].ctype,parts[i].flags);//yes i know this pixel is different color than the glow... i don't know why
-						cg = parts[i].tmp/4;
-						cb = parts[i].ctype/4;
-						cr = parts[i].flags/4;
+						vid[ny*(XRES+BARSIZE)+nx] = PIXRGB(cg,cb,cr);//yes i know this pixel is different color than the glow... i don't know why
+						cg = cg/4;
+						cb = cb/4;
+						cr = cr/4;
 						x = nx/CELL;
 						y = ny/CELL;
 						cg += fire_g[y][x];
@@ -2283,7 +2293,7 @@ void draw_parts(pixel *vid)
 						fire_r[y][x] = cr;
 					}
 					else
-						blendpixel(vid,x,y,parts[i].tmp,parts[i].ctype,parts[i].flags,255);
+						blendpixel(vid,x,y,cg,cb,cr,255);
 				}
 				else if (t==PT_GRAV)
 				{
@@ -3174,6 +3184,13 @@ void draw_parts(pixel *vid)
 					uint8 R = firw_data[caddress];
 					uint8 G = firw_data[caddress+1];
 					uint8 B = firw_data[caddress+2];
+					if (decorations_enable && parts[i].dcolour)
+					{
+						int a = (parts[i].dcolour>>24)&0xFF;
+						R = (a*((parts[i].dcolour>>16)&0xFF) + (255-a)*R) >> 8;
+						G = (a*((parts[i].dcolour>>8)&0xFF) + (255-a)*G) >> 8;
+						B = (a*((parts[i].dcolour)&0xFF) + (255-a)*B) >> 8;
+					}
 					if (cmode == CM_FIRE||cmode==CM_BLOB || cmode==CM_FANCY)
 					{
 						cr = R/2;