104 lines
2.0 KiB
ArmAsm
104 lines
2.0 KiB
ArmAsm
;
|
|
; fan
|
|
; Code and data structures related to the special fan weapon
|
|
;
|
|
; Created by Quinn Dunki on 8/15/18
|
|
;
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
; deployFan
|
|
;
|
|
; Y: Index to projectile structure
|
|
;
|
|
deployFan:
|
|
SAVE_AY
|
|
|
|
lda #200 ; Drop in from the top of the view
|
|
sta projectileData+GO_POSY,y
|
|
|
|
lda #$c80
|
|
sta projectileData+JD_PRECISEY,y
|
|
|
|
lda #0
|
|
sta projectileData+JD_VX,y
|
|
sta projectileData+JD_VY,y
|
|
|
|
RESTORE_AY
|
|
rts
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
; updateFan
|
|
;
|
|
; Y = Offset to projectile structure
|
|
;
|
|
updateFan:
|
|
SAVE_AXY
|
|
|
|
lda projectileData+JD_STATIC,y
|
|
bne updateFanDone ; We're already static, so no work to do
|
|
|
|
; Wait for fan to collide with us as it falls from the sky
|
|
lda projectileData+GO_POSX,y
|
|
sta rectParams
|
|
lda projectileData+GO_POSY,y
|
|
sta rectParams+2
|
|
lda #GAMEOBJECTWIDTH
|
|
sta rectParams+4
|
|
lda #GAMEOBJECTHEIGHT
|
|
sta rectParams+6
|
|
|
|
ldx currentPlayer
|
|
jsr playerIntersectRect
|
|
cmp #0
|
|
beq updateFanDone
|
|
|
|
; Once fan is in place, make it static
|
|
lda #1
|
|
sta projectileData+JD_STATIC,y
|
|
jsr endProjectile
|
|
|
|
; Now set up the stand
|
|
lda projectileData+GO_POSX,y
|
|
sta standGameObjectData+GO_POSX
|
|
lda projectileData+GO_POSY,y
|
|
sec
|
|
sbc #GAMEOBJECTHEIGHT
|
|
sta standGameObjectData+GO_POSY,y
|
|
|
|
updateFanDone:
|
|
RESTORE_AXY
|
|
rts
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
; renderFan
|
|
;
|
|
; Y = Offset to projectile structure
|
|
;
|
|
renderFan:
|
|
SAVE_AXY
|
|
|
|
lda projectileData+JD_STATIC,y
|
|
beq renderFanDone ; Don't render the stand until we're static
|
|
|
|
; Render the stand under the fan
|
|
lda #standGameObjectData
|
|
sta PARAML0
|
|
lda #14
|
|
jsr renderGameObject
|
|
|
|
renderFanDone:
|
|
RESTORE_AXY
|
|
rts
|
|
|
|
|
|
; Fake game object for rendering the stand
|
|
standGameObjectData:
|
|
.word 40 ; X pos in pixels (from right terrain edge)
|
|
.word 38 ; Y pos in pixels (from bottom terrain edge)
|
|
.word 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ; Saved background 64 bytes
|
|
.word 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
|
.word 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
|
.word 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|