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Fix fire effect in wren

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This commit is contained in:
Fabien Freling 2019-03-28 13:16:31 +01:00
parent 4b09e54b64
commit 45efb366f3
1 changed files with 21 additions and 12 deletions
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33
doom_fire.wren
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@ -9,9 +9,11 @@ class Game is TIC{
construct new(){ construct new(){
_t=0 _t=0
_width = 240
_height = 136
// Init to black // Init to black
_base = List.filled(240 * 136, 0) _base = List.filled(_width * _height, 0)
for (last_line in (240 * 135)...(240 * 136)) { for (last_line in (_width * (_height-1))...(_width * _height)) {
_base[last_line] = 15 _base[last_line] = 15
} }
_random = Random.new(12345) _random = Random.new(12345)
@ -19,26 +21,33 @@ class Game is TIC{
} }
dofire() { dofire() {
for (x in 0...240) { for (x in 0..._width) {
for (y in 135..1) { for (y in 0...(_height-1)) {
spreadfire(x, y) spreadfire(x, y)
} }
} }
} }
spreadfire(x, y) { spreadfire(x, y) {
var rand = _random.int(2) var rand = _random.int(4) // [0, 3]
var delta = rand var delta = rand & 1
var index = x + y * 240 var side = -rand+1 // [-2, 1]
_base[index - 240] = _base[index] - delta if (x+side < 0) {
if (_base[index - 240] < 0) { side=0
_base[index - 240] = 0 }
if (x+side >= _width) {
side = 0
}
var index = x + (y*240)
_base[index+side] = _base[index + _width] - delta
if (_base[index+side] < 0) {
_base[index+side] = 0
} }
} }
TIC(){ TIC(){
for (y in 0...136) { for (y in 0..._height) {
for (x in 0...240) { for (x in 0..._width) {
TIC.pix(x, y, _base[x + y * 240]) TIC.pix(x, y, _base[x + y * 240])
} }
} }