Check if Random is greater/equal to Chance

General random chance function. Randomly returns False r5/r4 of the time.

Args:

• r4 = MOD = number of sides on the die
• r5 = Chance = target to beat

Returns:

0..(r4-1) >= r5

Check if Random >= Chance
0005e0cc: 27bdffe0 addiu r29,r29,0xffe0		(if the RNG doesn't use r4/r5, r16/r17 aren't needed)
0005e0d0: afb00010 sw r16,0x0010(r29)
0005e0d4: 00808021 addu r16,r4,r0		r16 = Random MOD
0005e0d8: afb10014 sw r17,0x0014(r29)
0005e0dc: afbf0018 sw r31,0x0018(r29)
0005e0e0: 0c0088c3 jal 0x0002230c		Random Number Generator
0005e0e4: 00a08821 addu r17,r5,r0		r17 = Chance
0005e0e8: 00500018 mult r2,r16			Random * MOD
0005e0ec: 00001012 mflo r2
0005e0f0: 04410002 bgez r2,0x 0005e0fc		Check if result is >= 0 (pointless and wrong!)
0005e0f4: 00000000 nop
0005e0f8: 24427fff addiu r2,r2,0x7fff		If so, make value positive
0005e0fc: 000213c3 sra r2,r2,0x0f		Result / 0x8000
0005e100: 0051102a slt r2,r2,r17
0005e104: 38420001 xori r2,r2,0x0001		r2 = 1 if Result >= Chance
0005e108: 8fbf0018 lw r31,0x0018(r29)
0005e10c: 8fb10014 lw r17,0x0014(r29)
0005e110: 8fb00010 lw r16,0x0010(r29)
0005e114: 27bd0020 addiu r29,r29,0x0020
0005e118: 03e00008 jr r31
0005e11c: 00000000 nop

Return Locations

0005cfe0: Calculate Learned Abilities
00176c78:
00180268:
001807e0: Generate Crystal or Treasure
001843b8:
001848f8: Attack Evaded Calculations
001869c4:
00187584:
001876a8:
00187988: Katana Break Chance
001880e8: Apply status (to action)
0018c6ec:
0018d39c: Chance to React
0018e848: