Difference between revisions of "0005e0cc"

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m (Raijinili moved page Checking if Attack Hits? to 0005e0cc: misnamer :3)
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General random chance function. Randomly returns False r5/r4 of the time.
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#REDIRECT [[Check if Random is greater/equal to Chance]]
 
 
Args:
 
 
 
* r4 = number of sides on the die
 
* r5 = target to beat
 
 
 
0005e0cc: 27bdffe0 addiu r29,r29,0xffe0
 
0005e0d0: afb00010 sw r16,0x0010(r29)
 
0005e0d4: 00808021 addu r16,r4,r0          r16 = Sides
 
0005e0d8: afb10014 sw r17,0x0014(r29)
 
0005e0dc: afbf0018 sw r31,0x0018(r29)
 
0005e0e0: 0c0088c3 jal 0x[[0002230c]]           r2 = 0..7fffh
 
0005e0e4: 00a08821 addu r17,r5,r0          r17 = Target
 
0005e0e8: 00500018 mult r2,r16              r2 = Sides * 0..7fffh
 
0005e0ec: 00001012 mflo r2                  ^
 
0005e0f0: 04410002 bgez r2,0x0005e0fc      if r2 < 0:
 
0005e0f4: 00000000 nop
 
0005e0f8: 24427fff addiu r2,r2,0x7fff          r2 += 7fffh    //make positive
 
0005e0fc: 000213c3 sra r2,r2,0x0f          r2 = r2 / 8000h      // = 0..(Sides - 1)
 
0005e100: 0051102a slt r2,r2,r17            rv = 0..(Sides - 1) <  Target
 
0005e104: 38420001 xori r2,r2,0x0001        rv = 0..(Sides - 1) >= Target
 
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                  return 0..(Sides - 1) >= Target
 
0005e11c: 00000000 nop
 

Latest revision as of 07:20, 13 April 2017