A C64 Game - Step 93

An addon to make the other bosses a bit stronger against Sam. Now you need to re-grab the boss after every hit you place.
Previously Sam only had to stand there and keep fire pressed. Hardly a challenge :)



First of all, a new enemy type is added. Normal enemies stay type 1, bosses are now type 3.

Most changes are in the FireSam routine. Add in the PLAYER_FIRE_RELEASED check:

.FireSam
          ldy PLAYER_JOYSTICK_PORT,x
          lda JOYSTICK_PORT_II,y
          and #$10
          beq +

          ;not fire pressed
          lda #1
          sta PLAYER_FIRE_RELEASED,x
          jmp .SamNotFirePushed

+
          lda #1
          sta PLAYER_FIRE_PRESSED_TIME,x
          stx PARAM6
          lda SPRITE_HELD
          bne .NoFireReleasedCheck

          jsr SamUseForce
          beq .NoEnemyHeld

          ldx CURRENT_INDEX
          lda PLAYER_FIRE_RELEASED,x
          bne +

          jmp .SamNotFirePushed

+
          lda #0
          sta PLAYER_FIRE_RELEASED,x

.NoFireReleasedCheck

In the enemy hurt routine we check if a boss was hurt (by checking the type). If it is, release the enemy from the force grip:

          ;enemy was hurt
          ldy SPRITE_HELD
          dey
          lda SPRITE_ACTIVE,y
          tay
          lda IS_TYPE_ENEMY,y
          cmp #3

          ;if boss, auto-release
          bne +

          lda #0
          sta PLAYER_FIRE_RELEASED,x
          jmp .SamNotFirePushed

+

Have fun!


step93.zip