Index of hit tank in HitFlag

For future use.
Easier to check whether the hit tank or ground.

grafproc.asm

@@ -262,8 +262,7 @@ CheckCollisionDraw
 	sbc #1
 	sta YHit
 	sty YHit+1
-    ;mwa ydraw YHit
-    mva #1 HitFlag
+    mva #$ff HitFlag
 StopHitChecking
     jmp ContinueDraw
 @
@@ -798,10 +797,10 @@ ShieldVisible
 ; this proc draws a little "horns" on shield.
 ; Symbol of defensive but aggressive :) weapon
 ;--------------------------------------------------
-	dew xdraw			; 1 pixel left
+.nowarn	dew xdraw			; 1 pixel left
 	sbw ydraw #$0a		; 10 pixels up
 	jsr plot
-	dew ydraw
+.nowarn	dew ydraw
 	inw xdraw
 	jsr plot
 	sbw xdraw #$0d		; 13 pixels left

variables.asm

@@ -118,7 +118,7 @@ MaxWind   .ds 1 ;
 WindOrientation  .DS 1 ;(0-right,1-left)
 ;----------------------------------------------------
 Counter  .DS 1  ;temporary Counter for outside loops
-HitFlag  .DS 1 ;1 when missile hit anything
+HitFlag  .DS 1 ;$ff when missile hit ground, $00 when no hit, $01-$06 tank index+1 when hit tank 
 ;----------------------------------------------------
 xtankstableL ;X positions of tanks (lower left point)
     .DS [MaxPlayers]

weapons.asm

@@ -765,7 +765,7 @@ UpNotYet
     sbc #1
     sta ydraw
     ;check tank collision prior to PLOT
-    sty HitFlag
+    sty HitFlag		; set to 0
 
     jsr CheckCollisionWithTank
 
@@ -1306,7 +1306,7 @@ AfterStrongShoot
 ShotUnderGround
 	mwa xtraj+1 xdraw	; but why not XHit and YHit !!!???
 	mwa ytraj+1 ydraw
-	mva #1 HitFlag
+	mva #$ff HitFlag
 	rts
 .endp
 
@@ -2200,7 +2200,7 @@ MIRValreadyAll
     mva tempor2 TankNr
     mva #0 Erase
     jsr SoilDown2
-    mva #1 HitFlag
+    mva #$ff HitFlag		; but why ??
     ;jsr drawtanks
     rts
 .endp
@@ -2211,7 +2211,7 @@ MIRValreadyAll
 ; Check collision with Tank :)
 ; xdraw , ydraw - coordinates of the checked point
 ; results:
-; HitFlag - 1 - hit, 0 - no hit
+; HitFlag - $ff - hit ground, 0 - no hit, 1-6 - hit tank (index+1)
 ; XHit , YHit - coordinates of hit
 ; X - index of the hit tank
 
@@ -2243,7 +2243,9 @@ Condition02
     sbc #4
     cmp ydraw
     bcs OverTheTank
-    mva #1 HitFlag
+	inx
+    stx HitFlag		; index of hit tank+1
+	dex
     mwa xdraw XHit
     mwa ydraw YHit
     rts ; in X there is an index of the hit tank