graphics: traffic on turns- now using layers

this fixes a couple defects in the original graphics pack-
- dashed lines on curves (tile 71) would shift or flicker during animation
- one of the road pixels (tile 70) would flash during heavy-trf animation

git-svn-id: https://micropolis.googlecode.com/svn/trunk/micropolis-java@712 d9718cc8-9f43-0410-858b-315f434eb58c

graphics/tiles.dat

@@ -82,10 +82,10 @@
 81    roads@0,16,16,16 |traffic@16,16,16,16
 82    roads@0,32,16,16 |traffic@16,0,16,16
 83    roads@0,48,16,16 |traffic@16,16,16,16
-84    roads@16,64,16,16
+84    roads@0,64,16,16 |traffic@16,64,16,16
-85    roads@16,80,16,16
+85    roads@0,80,16,16 |traffic@16,80,16,16
-86    roads@16,96,16,16
+86    roads@0,96,16,16 |traffic@16,96,16,16
-87    roads@16,112,16,16
+87    roads@0,112,16,16|traffic@16,112,16,16
 88    roads@0,128,16,16|traffic@16,0,16,16
 89    roads@0,144,16,16|traffic@16,16,16,16
 90    roads@0,160,16,16|traffic@16,0,16,16
@@ -98,10 +98,10 @@
 97    roads@0,16,16,16 |traffic@32,16,16,16
 98    roads@0,32,16,16 |traffic@32,0,16,16
 99    roads@0,48,16,16 |traffic@32,16,16,16
-100   roads@32,64,16,16
+100   roads@0,64,16,16 |traffic@32,64,16,16
-101   roads@32,80,16,16
+101   roads@0,80,16,16 |traffic@32,80,16,16
-102   roads@32,96,16,16
+102   roads@0,96,16,16 |traffic@32,96,16,16
-103   roads@32,112,16,16
+103   roads@0,112,16,16|traffic@32,112,16,16
 104   roads@0,128,16,16|traffic@32,0,16,16
 105   roads@0,144,16,16|traffic@32,16,16,16
 106   roads@0,160,16,16|traffic@32,0,16,16
@@ -114,10 +114,10 @@
 113   roads@0,16,16,16 |traffic@48,16,16,16
 114   roads@0,32,16,16 |traffic@48,0,16,16
 115   roads@0,48,16,16 |traffic@48,16,16,16
-116   roads@48,64,16,16
+116   roads@0,64,16,16 |traffic@48,64,16,16
-117   roads@48,80,16,16
+117   roads@0,80,16,16 |traffic@48,80,16,16
-118   roads@48,96,16,16
+118   roads@0,96,16,16 |traffic@48,96,16,16
-119   roads@48,112,16,16
+119   roads@0,112,16,16|traffic@48,112,16,16
 120   roads@0,128,16,16|traffic@48,0,16,16
 121   roads@0,144,16,16|traffic@48,16,16,16
 122   roads@0,160,16,16|traffic@48,0,16,16
@@ -130,10 +130,10 @@
 129   roads@0,16,16,16 |traffic@64,16,16,16
 130   roads@0,32,16,16 |traffic@64,0,16,16
 131   roads@0,48,16,16 |traffic@64,16,16,16
-132   roads@64,64,16,16
+132   roads@0,64,16,16 |traffic@64,64,16,16
-133   roads@64,80,16,16
+133   roads@0,80,16,16 |traffic@64,80,16,16
-134   roads@64,96,16,16
+134   roads@0,96,16,16 |traffic@64,96,16,16
-135   roads@64,112,16,16
+135   roads@0,112,16,16|traffic@64,112,16,16
 136   roads@0,128,16,16|traffic@64,0,16,16
 137   roads@0,144,16,16|traffic@64,16,16,16
 138   roads@0,160,16,16|traffic@64,0,16,16
@@ -146,10 +146,10 @@
 145   roads@0,16,16,16 |traffic@80,16,16,16
 146   roads@0,32,16,16 |traffic@80,0,16,16
 147   roads@0,48,16,16 |traffic@80,16,16,16
-148   roads@80,64,16,16
+148   roads@0,64,16,16 |traffic@80,64,16,16
-149   roads@80,80,16,16
+149   roads@0,80,16,16 |traffic@80,80,16,16
-150   roads@80,96,16,16
+150   roads@0,96,16,16 |traffic@80,96,16,16
-151   roads@80,112,16,16
+151   roads@0,112,16,16|traffic@80,112,16,16
 152   roads@0,128,16,16|traffic@80,0,16,16
 153   roads@0,144,16,16|traffic@80,16,16,16
 154   roads@0,160,16,16|traffic@80,0,16,16
@@ -162,10 +162,10 @@
 161   roads@0,16,16,16 |traffic@96,16,16,16
 162   roads@0,32,16,16 |traffic@96,0,16,16
 163   roads@0,48,16,16 |traffic@96,16,16,16
-164   roads@96,64,16,16
+164   roads@0,64,16,16 |traffic@96,64,16,16
-165   roads@96,80,16,16
+165   roads@0,80,16,16 |traffic@96,80,16,16
-166   roads@96,96,16,16
+166   roads@0,96,16,16 |traffic@96,96,16,16
-167   roads@96,112,16,16
+167   roads@0,112,16,16|traffic@96,112,16,16
 168   roads@0,128,16,16|traffic@96,0,16,16
 169   roads@0,144,16,16|traffic@96,16,16,16
 170   roads@0,160,16,16|traffic@96,0,16,16
@@ -178,10 +178,10 @@
 177   roads@0,16,16,16 |traffic@112,16,16,16
 178   roads@0,32,16,16 |traffic@112,0,16,16
 179   roads@0,48,16,16 |traffic@112,16,16,16
-180   roads@112,64,16,16
+180   roads@0,64,16,16 |traffic@112,64,16,16
-181   roads@112,80,16,16
+181   roads@0,80,16,16 |traffic@112,80,16,16
-182   roads@112,96,16,16
+182   roads@0,96,16,16 |traffic@112,96,16,16
-183   roads@112,112,16,16
+183   roads@0,112,16,16|traffic@112,112,16,16
 184   roads@0,128,16,16|traffic@112,0,16,16
 185   roads@0,144,16,16|traffic@112,16,16,16
 186   roads@0,160,16,16|traffic@112,0,16,16
@@ -194,10 +194,10 @@
 193   roads@0,16,16,16 |traffic@128,16,16,16
 194   roads@0,32,16,16 |traffic@128,0,16,16
 195   roads@0,48,16,16 |traffic@128,16,16,16
-196   roads@128,64,16,16
+196   roads@0,64,16,16 |traffic@128,64,16,16
-197   roads@128,80,16,16
+197   roads@0,80,16,16 |traffic@128,80,16,16
-198   roads@128,96,16,16
+198   roads@0,96,16,16 |traffic@128,96,16,16
-199   roads@128,112,16,16
+199   roads@0,112,16,16|traffic@128,112,16,16
 200   roads@0,128,16,16|traffic@128,0,16,16
 201   roads@0,144,16,16|traffic@128,16,16,16
 202   roads@0,160,16,16|traffic@128,0,16,16