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rand: simplify rand.PRNG, move to optional types for error handling (#13570)

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This commit is contained in:
Subhomoy Haldar
2022-02-23 16:06:14 +05:30
committed by GitHub
parent 5c0b7b0d05
commit 114a341f5f
49 changed files with 609 additions and 1586 deletions
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7
examples/2048/2048.v
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@@ -390,10 +390,11 @@ fn (mut b Board) place_random_tile() (Pos, int) {
}
}
if empty_tiles_max > 0 {
new_random_tile_index := rand.intn(empty_tiles_max)
new_random_tile_index := rand.intn(empty_tiles_max) or { 0 }
empty_pos := etiles[new_random_tile_index]
// 10% chance of getting a `4` tile
random_value := if rand.f64n(1.0) < 0.9 { 1 } else { 2 }
value := rand.f64n(1.0) or { 0.0 }
random_value := if value < 0.9 { 1 } else { 2 }
b.field[empty_pos.y][empty_pos.x] = random_value
return empty_pos, random_value
}
@@ -465,7 +466,7 @@ fn (mut app App) ai_move() {
cboard.place_random_tile()
mut cmoves := 0
for !cboard.is_game_over() {
nmove := possible_moves[rand.intn(possible_moves.len)]
nmove := possible_moves[rand.intn(possible_moves.len) or { 0 }]
cboard, is_valid = cboard.move(nmove)
if !is_valid {
continue