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Fix overflow calcolo probabilita' caduta (int 8-bit su GB)

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Il calcolo (60 - stamina) * 255 overflow su 8-bit (int del Game Boy).
Cast a uint16_t per il calcolo corretto. Ora il rischio di caduta
funziona: 30 stamina = 50% caduta, 0 stamina = 100% caduta.
This commit is contained in:
Matteo Benedetto
2026-06-26 13:04:28 +02:00
parent 30111d6316
commit 14eb7893f7
1 changed files with 3 additions and 1 deletions
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src/player_logic.c
+3 -1
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@@ -164,7 +164,9 @@ void update_player_movement(uint8_t keys, uint8_t prev_keys) {
// (es: 30 stamina -> 50% caduta; 0 stamina -> 100% caduta) // (es: 30 stamina -> 50% caduta; 0 stamina -> 100% caduta)
uint8_t fall_chance = 0; uint8_t fall_chance = 0;
if (stamina < 60) { if (stamina < 60) {
fall_chance = (uint8_t)(((60 - stamina) * 255) / 60); // Probabilita' di caduta proporzionale allo stamina mancante.
// Cast a uint16_t per evitare overflow (int e' 8-bit su GB).
fall_chance = (uint8_t)(((uint16_t)(60 - stamina) * 255) / 60);
} }
uint8_t roll = (uint8_t)rand(); uint8_t roll = (uint8_t)rand();
uint8_t will_fall = (roll < fall_chance); uint8_t will_fall = (roll < fall_chance);