Fire: Difference between revisions

! Address !! Length !! [[Data types|Type]] !! Name !! Description

| $00 || 2 || int16 || x || X position

| $02 || 2 || int16 || y || Y position

| $04 || 2 || uint16 || extra || Extra data (unused)

| $06 || 2 || uint16 || index || Victim/one-shot monster index

! Address !! Length !! [[Data types|Type]] !! Name !! Description

| $08 || 2 || pointer16 || sprite || Pointer to sprite

| $0A || 2 || uint16 || animationFrame || Current animation frame

| $0C || 2 || int16 0-based || cyclesUntilAnimUpdate || Number of 2 frame cycles until next animation frame

| $0E || 2 || unused || || Unused

| $10 || 2 || int16 0-based || health || Health

| $12 || 2 || int16 || x || X position

| $14 || 2 || int16 || y || Y position

| $16 || 2 || sprite type || collidedSpriteType || Type of sprite collided with

== Psuedocode ==

main() {

{{RAM name|$7E:00DE}} += 8

this.init()

this.health = 5

{{ROM name|$80:8475}}(this.collisionHandler)

while (this.collidedSpriteType == 0 or (this.collidedSpriteType != OFF_SCREEN and this.health >= 0)) {

this.collidedSpriteType = 0

{{ROM name|$80:8353}}(2)

this.cyclesUntilAnimUpdate -= 1

if (this.cyclesUntilAnimUpdate < 0) {

this.cyclesUntilAnimUpdate = 2

this.animationFrame = (animationFrame + 1) % 4

this.sprite.tileData.lowBytes = this.animation[this.animationFrame]

this.sprite.tileData.bank = 0x8F

this.sprite.type = spriteTypes[this.animationFrame & 3]

}

}

if (this.collidedSpriteType != OFF_SCREEN && args.index != 0) {

{{ROM name|$81:8191}}(args.index)

}

{{RAM name|$7E:00DE}} -= 8

while ({{RAM name|$7E:00DE}} < 0) { }

{{ROM name|$80:BE41}}(this.sprite)

}

animation = { 0xD526, 0xD537, 0xD548, 0xD559 }

spriteTypes = { 2, 3, 3, 3 }

init() {

this.sprite = {{ROM name|$80:BE0C}}()

this.sprite.x = args.x

this.x = args.x

this.sprite.z = 0

this.sprite.y = args.y

this.y = args.y

this.sprite.tileData = $8F:D526

this.sprite.entity = {{RAM name|$7E:0008}}

this.sprite.type = 3

this.sprite.visible = true

this.animationFrame = 0

this.collidedSpriteType = 0

this.cyclesUntilAnimUpdate = 2

}

collisionHandler(spriteType) {

this.collidedSpriteType = spriteType

weaponType = spriteType & 0x7FFF

if (weaponType == FIRE_EXTINGUISHER or

weaponType == SODA_POP_CANS or

weaponType == SQUIRT_GUN or

weaponType == 0x65) {

this.health -= 1

return true

}

if (weaponType == OFF_SCREEN) {

return true

}

return false

}