4cade/src/prelaunch/h.e.r.o.a

;license:MIT
;(c) 2019 by 4am/Frank M.

!cpu 6502
!to "build/PRELAUNCH/H.E.R.O",plain
*=$106

         !source "src/prelaunch/common.a"

         +ENABLE_ACCEL
         lda   #$60
         sta   $4028
         jsr   $4000      ; decompress
         +GET_MACHINE_STATUS
         and   #CHEATS_ENABLED
         beq   +
                          ; lives in $28 (capped at 6)
                          ; bombs in $29
         lda   #$A5
         sta   $6387      ; patch - don't decrease lives after dying
         lda   #$2C
         sta   $717E      ; patch - don't call routine that decreases bombs after planting one
                          ; (routine needs to decrease bombs because it's called at the end of each level
                          ; to give you a bonus for each bomb left, so instead we patch one caller but
                          ; not the other so you can plant a bomb without using up a bomb then get the
                          ; maximum 'unused bombs' bonus and advance to the next level)
+
         lda   #3
         sta   $6040
         lda   #$A6
         sta   $6041      ; reset vector cloned from $603F
                          ; $100 gets trashed so put it at $300
         +NEW_RESET_VECTOR $300

         +DISABLE_ACCEL
         jmp   $6000

!if * > $1C0 {
  !error "code is too large, ends at ", *
}