Aircraft defence balance changes

CHANGELOG

@@ -37,6 +37,9 @@ NEW:
 		Tanya can now plant C4 on vehicles.
 		Parachute bomb air strike will reveal the whole target area.
 		Adjusted AA Guns to fire their guns alternately at a high fire rate, and added contrails to their bullets.
+		Decreased AA Gun ZSU-23 damage from 25 to 12.
+		Increased SAM Site power cost from -20 to -40.
+		Decreased SAM Site Nike damage from 100 to 50.
 	Tiberian Dawn:
 		Commando can now plant C4 on bridges.
 		Added the Asset Browser to the Extras menu.

mods/ra/rules/structures.yaml

@@ -769,7 +769,7 @@ SAM:
 		Name: SAM Site
 		Description: Anti-Air base defense.\n  Strong vs Aircraft\n  Weak vs Infantry, Tanks
 	Building:
-		Power: -20
+		Power: -40
 		Footprint: xx
 		Dimensions: 2,1
 	-GivesBuildableArea:

mods/ra/weapons.yaml

@@ -37,7 +37,7 @@ ZSU-23:
 			Light: 75%
 			Concrete: 50%
 		Explosion: small_explosion_air
-		Damage: 25
+		Damage: 12
 
 Vulcan:
 	ROF: 30
@@ -704,7 +704,7 @@ Nike:
 		ImpactSound: kaboom25.aud
 		InfDeath: 3
 		SmudgeType: Crater
-		Damage: 100
+		Damage: 50
 
 RedEye:
 	ROF: 50