diff options
Diffstat (limited to 'crawl-ref/source/stuff.cc')
| -rw-r--r-- | crawl-ref/source/stuff.cc | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/crawl-ref/source/stuff.cc b/crawl-ref/source/stuff.cc index 7826d6b269..01b5b8a030 100644 --- a/crawl-ref/source/stuff.cc +++ b/crawl-ref/source/stuff.cc @@ -357,6 +357,31 @@ void pop_rng_state() #endif // USE_SYSTEM_RAND +// Attempts to make missile weapons nicer to the player by +// reducing the extreme variance in damage done. +void scale_dice( dice_def &dice, int threshold ) +{ + while (dice.size > threshold) + { + dice.num *= 2; + // If it's an odd number, lose one; this is more than + // compensated by the increase in number of dice. + dice.size = dice.size / 2; + } +} + +int bestroll(int max, int rolls) +{ + int best = 0; + for (int i = 0; i < rolls; i++) + { + int curr = random2(max); + if (curr > best) + best = curr; + } + return (best); +} + // random2avg() returns same mean value as random2() but with a lower variance // never use with rolls < 2 as that would be silly - use random2() instead {dlb} int random2avg(int max, int rolls) @@ -734,6 +759,199 @@ unsigned char random_colour(void) return (1 + random2(15)); } // end random_colour() +// returns if a colour is one of the special element colours (ie not regular) +bool is_element_colour( int col ) +{ + // striping any COLFLAGS (just in case) + return ((col & 0x007f) >= EC_FIRE); +} + +int element_colour( int element, bool no_random ) +{ + // Doing this so that we don't have to do recursion here at all + // (these were the only cases which had possible double evaluation): + if (element == EC_FLOOR) + element = env.floor_colour; + else if (element == EC_ROCK) + element = env.rock_colour; + + // pass regular colours through for safety. + if (!is_element_colour( element )) + return (element); + + int ret = BLACK; + + // Setting no_random to true will get the first colour in the cases + // below. This is potentially useful for calls to this function + // which might want a consistant result. + int tmp_rand = (no_random ? 0 : random2(120)); + + switch (element & 0x007f) // strip COLFLAGs just in case + { + case EC_FIRE: + ret = (tmp_rand < 40) ? RED : + (tmp_rand < 80) ? YELLOW + : LIGHTRED; + break; + + case EC_ICE: + ret = (tmp_rand < 40) ? LIGHTBLUE : + (tmp_rand < 80) ? BLUE + : WHITE; + break; + + case EC_EARTH: + ret = (tmp_rand < 60) ? BROWN : LIGHTRED; + break; + + case EC_AIR: + ret = (tmp_rand < 60) ? LIGHTGREY : WHITE; + break; + + case EC_ELECTRICITY: + ret = (tmp_rand < 40) ? LIGHTCYAN : + (tmp_rand < 80) ? LIGHTBLUE + : CYAN; + break; + + case EC_POISON: + ret = (tmp_rand < 60) ? LIGHTGREEN : GREEN; + break; + + case EC_WATER: + ret = (tmp_rand < 60) ? BLUE : CYAN; + break; + + case EC_MAGIC: + ret = (tmp_rand < 30) ? LIGHTMAGENTA : + (tmp_rand < 60) ? LIGHTBLUE : + (tmp_rand < 90) ? MAGENTA + : BLUE; + break; + + case EC_MUTAGENIC: + case EC_WARP: + ret = (tmp_rand < 60) ? LIGHTMAGENTA : MAGENTA; + break; + + case EC_ENCHANT: + ret = (tmp_rand < 60) ? LIGHTBLUE : BLUE; + break; + + case EC_HEAL: + ret = (tmp_rand < 60) ? LIGHTBLUE : YELLOW; + break; + + case EC_BLOOD: + ret = (tmp_rand < 60) ? RED : DARKGREY; + break; + + case EC_DEATH: // assassin + case EC_NECRO: // necromancer + ret = (tmp_rand < 80) ? DARKGREY : MAGENTA; + break; + + case EC_UNHOLY: // ie demonology + ret = (tmp_rand < 80) ? DARKGREY : RED; + break; + + case EC_DARK: + ret = DARKGREY; + break; + + case EC_HOLY: + ret = (tmp_rand < 60) ? YELLOW : WHITE; + break; + + case EC_VEHUMET: + ret = (tmp_rand < 40) ? LIGHTRED : + (tmp_rand < 80) ? LIGHTMAGENTA + : LIGHTBLUE; + break; + + case EC_CRYSTAL: + ret = (tmp_rand < 40) ? LIGHTGREY : + (tmp_rand < 80) ? GREEN + : LIGHTRED; + break; + + case EC_SLIME: + ret = (tmp_rand < 40) ? GREEN : + (tmp_rand < 80) ? BROWN + : LIGHTGREEN; + break; + + case EC_SMOKE: + ret = (tmp_rand < 30) ? LIGHTGREY : + (tmp_rand < 60) ? DARKGREY : + (tmp_rand < 90) ? LIGHTBLUE + : MAGENTA; + break; + + case EC_JEWEL: + ret = (tmp_rand < 12) ? WHITE : + (tmp_rand < 24) ? YELLOW : + (tmp_rand < 36) ? LIGHTMAGENTA : + (tmp_rand < 48) ? LIGHTRED : + (tmp_rand < 60) ? LIGHTGREEN : + (tmp_rand < 72) ? LIGHTBLUE : + (tmp_rand < 84) ? MAGENTA : + (tmp_rand < 96) ? RED : + (tmp_rand < 108) ? GREEN + : BLUE; + break; + + case EC_ELVEN: + ret = (tmp_rand < 40) ? LIGHTGREEN : + (tmp_rand < 80) ? GREEN : + (tmp_rand < 100) ? LIGHTBLUE + : BLUE; + break; + + case EC_DWARVEN: + ret = (tmp_rand < 40) ? BROWN : + (tmp_rand < 80) ? LIGHTRED : + (tmp_rand < 100) ? LIGHTGREY + : CYAN; + break; + + case EC_ORCISH: + ret = (tmp_rand < 40) ? DARKGREY : + (tmp_rand < 80) ? RED : + (tmp_rand < 100) ? BROWN + : MAGENTA; + break; + + case EC_GILA: + ret = (tmp_rand < 30) ? LIGHTMAGENTA : + (tmp_rand < 60) ? MAGENTA : + (tmp_rand < 90) ? YELLOW : + (tmp_rand < 105) ? LIGHTRED + : RED; + break; + + case EC_STONE: + if (player_in_branch( BRANCH_HALL_OF_ZOT )) + ret = env.rock_colour; + else + ret = LIGHTGREY; + break; + + case EC_RANDOM: + ret = 1 + random2(15); // always random + break; + + case EC_FLOOR: // should alredy be handled + case EC_ROCK: // should alredy be handled + default: + break; + } + + ASSERT( !is_element_colour( ret ) ); + + return ((ret == BLACK) ? GREEN : ret); +} + char index_to_letter(int the_index) { return (the_index + ((the_index < 26) ? 'a' : ('A' - 26))); |