Difference between revisions of "Generate Treasure"

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ROUTINE : GENERATE TREASURE FOR TREASURE CHEST
 
  
−
   PARAMETERS:
+
# ROUTINE : GENERATE TREASURE FOR TREASURE CHEST
−
      r4   =  [Treasure unit]
+
#
−
     
+
#   PARAMETERS:
−
   RETURNS:
+
#        r4 =  [Treasure unit]
−
      r2   =  [Item]
+
#       
 +
#   RETURNS:
 +
#        r2 =  [Item]
 +
 
 +
# SECTION 1 : SET UP
  
−
SECTION 1 : SET UP
 
−
     
 
 
  00180a08: 3c028019 lui r2,0x8019
 
  00180a08: 3c028019 lui r2,0x8019
−
  00180a0c: 8c42f5fc lw r2,-0x0a04(r2)           #  r2 = MEM[0x18f5fc]
+
  00180a0c: 8c42f5fc lw r2,-0x0a04(r2)               #  r2 = MEM[0x18f5fc]
 
  00180a10: 27bdffe0 addiu r29,r29,0xffe0
 
  00180a10: 27bdffe0 addiu r29,r29,0xffe0
−
  00180a14: afbf001c sw r31,0x001c(r29)           #  IF (r2 != 0)
+
  00180a14: afbf001c sw r31,0x001c(r29)               #  IF (r2 != 0)
−
  00180a18: 14400033 bne r2,r0,0x 00180ae8            #     RETURN r2
+
  00180a18: 14400033 bne r2,r0,0x00180ae8            #       RETURN r2
−
  00180a1c: afb0 0018 sw r16,0x 0018(r29)
+
  00180a1c: afb00018 sw r16,0x0018(r29)
−
  00180a20: 00008021 addu r16,r0,r0               #  r16 = 0   [Count of valid items]
+
  00180a20: 00008021 addu r16,r0,r0                   #  r16 = 0 [Count of valid items]
−
  00180a24: 00003021 addu r6,r0,r0               #  r6 = 0   [Current equipment slot index]
+
  00180a24: 00003021 addu r6,r0,r0                   #  r6 = 0 [Current equipment slot index]
−
  00180a28: 27a50010 addiu r5,r29,0x0010           #  r5 =    [Valid item array pointer]
+
  00180a28: 27a50010 addiu r5,r29,0x0010             #  r5 =    [Valid item array pointer]
  
−
SECTION 2 : FIND VALID ITEMS ON TREASURE UNIT (EQUIPMENT)
+
# SECTION 2 : FIND VALID ITEMS ON TREASURE UNIT (EQUIPMENT)  
  
−
                                      #  DO {
+
                                                    #  DO {
−
  00180a2c: 00861021 addu r2,r4,r6               #    
+
  00180a2c: 00861021 addu r2,r4,r6                   #      
−
  00180a30: 9042001a lbu r2,0x001a(r2)           #     r2 = MEM[r4+r6+0x1a) [Equip] (Equipment in current slot of treasure unit)
+
  00180a30: 9042001a lbu r2,0x001a(r2)               #       r2 = MEM[r4+r6+0x1a) [Equip] (Equipment in current slot of treasure unit)
 
  00180a34: 00000000 nop
 
  00180a34: 00000000 nop
−
  00180a38: a0a20000 sb r2,0x0000(r5)               #     ValidItems[i-th] (MEM[r5]) = [Equip]
+
  00180a38: a0a20000 sb r2,0x0000(r5)                 #       ValidItems[i] (MEM[r5]) = [Equip]
 
  00180a3c: 90a30000 lbu r3,0x0000(r5)
 
  00180a3c: 90a30000 lbu r3,0x0000(r5)
−
  00180a40: 00000000 nop                       #     r6++ (LoopCount++)
+
  00180a40: 00000000 nop                             #       r6++ (LoopCount++)
−
  00180a44: 2c6200fe sltiu r2,r3,0x00fe           #     IF ([Equip] >= 0xFE) (empty)
+
  00180a44: 2c6200fe sltiu r2,r3,0x00fe               #       IF ([Equip] >= 0xFE) (empty)
−
  00180a48: 10400005 beq r2,r0,0x 00180a60            #         CONTINUE (skip this item)
+
  00180a48: 10400005 beq r2,r0,0x00180a60            #           CONTINUE (skip this item)
 
  00180a4c: 24c60001 addiu r6,r6,0x0001
 
  00180a4c: 24c60001 addiu r6,r6,0x0001
−
  00180a50: 10600004 beq r3,r0,0x 00180a64            #     IF ([Equip] == 0x00)
+
  00180a50: 10600004 beq r3,r0,0x00180a64            #       IF ([Equip] == 0x00)
−
  00180a54: 28c20007 slti r2,r6,0x0007           #         CONTINUE (skip this item)
+
  00180a54: 28c20007 slti r2,r6,0x0007               #           CONTINUE (skip this item)
−
  00180a58: 24a50001 addiu r5,r5,0x0001           #     r5++  
+
  00180a58: 24a50001 addiu r5,r5,0x0001               #       r5++  
−
  00180a5c: 26100001 addiu r16,r16,0x0001           #     r16++ (ValidItemCount++)
+
  00180a5c: 26100001 addiu r16,r16,0x0001             #       r16++ (ValidItemCount++)
 
  00180a60: 28c20007 slti r2,r6,0x0007
 
  00180a60: 28c20007 slti r2,r6,0x0007
−
  00180a64: 1440fff1 bne r2,r0,0x 00180a2c            #  } WHILE (r6 < 7)
+
  00180a64: 1440fff1 bne r2,r0,0x00180a2c            #  } WHILE (r6 < 7)
−
  00180a68: 00000000 nop
+
  00180a68: 00000000 nop  
  
−
SECTION 3 : NO VALID ITEMS : FIND USABLE ITEM? (POTION, ETC?)
+
# SECTION 3 : NO VALID ITEMS : FIND USABLE CHEMIST ITEM (EXCEPT ELIXIR)
  
−
  00180a6c: 16000014 bne r16,r0,0x 00180ac0        #  IF ([Valid item count] = 0)
+
  00180a6c: 16000014 bne r16,r0,0x00180ac0            #  IF ([Valid item count] = 0)
−
  00180a70: 00000000 nop                       #  {   
+
  00180a70: 00000000 nop                             #  {   
−
  00180a74: 0c0088c3 jal 0x0002230c               #      r2 = [Random number]
+
  00180a74: 0c0088c3 jal 0x0002230c                   #      r2 = [Random number]
 
  00180a78: 00000000 nop
 
  00180a78: 00000000 nop
−
  00180a7c: 00021840 sll r3,r2,0x01
+
  00180a7c: 00021840 sll r3,r2,0x01                   #      r2 = [Random number] * 13
 
  00180a80: 00621821 addu r3,r3,r2
 
  00180a80: 00621821 addu r3,r3,r2
 
  00180a84: 00031880 sll r3,r3,0x02
 
  00180a84: 00031880 sll r3,r3,0x02
−
  00180a88: 00621021 addu r2,r3,r2              
+
  00180a88: 00621021 addu r2,r3,r2                  
−
  00180a8c: 04410002 bgez r2,0x 00180a98           
+
  00180a8c: 04410002 bgez r2,0x00180a98              #      [Unnecessary negative check?]
−
  00180a90: 00000000 nop                      
+
  00180a90: 00000000 nop                            
−
  00180a94: 24427fff addiu r2,r2,0x7fff          
+
  00180a94: 24427fff addiu r2,r2,0x7fff              
−
  00180a98: 000213c3 sra r2,r2,0x0f              
+
  00180a98: 000213c3 sra r2,r2,0x0f                   #      r2 = roll(00,0D) #not including 0D
−
  00180a9c: 2442fff0 addiu r2,r2,0xfff0           #     r2 = [Random usable item]
+
  00180a9c: 2442fff0 addiu r2,r2,0xfff0               #       r2 = roll(F0,FD) #random Item except Phoenix Down.
−
  00180aa0: a3a20010 sb r2,0x0010(r29)           #     ValidItems[0] (STACK[0x10]) = r2
+
  00180aa0: a3a20010 sb r2,0x0010(r29)               #       ValidItems[0] (STACK[0x10]) = r2
−
  00180aa4: 93a30010 lbu r3,0x0010(r29)           #     r3 = r2
+
  00180aa4: 93a30010 lbu r3,0x0010(r29)               #       r3 = r2
−
  00180aa8: 00000000 nop                       #     IF (r3 >= 0xf5) (We found a usable item?)
+
  00180aa8: 00000000 nop                             #       ValidItemCount (r16) = 1
−
  00180aac: 2c6200f5 sltiu r2,r3,0x00f5           #     { 
+
  00180aac: 2c6200f5 sltiu r2,r3,0x00f5               #       IF (r3 >= 0xf5) #F5 is Elixir
−
  00180ab0: 14400003 bne r2,r0,0x 00180ac0            #         ValidItemCount (r16) = 1
+
  00180ab0: 14400003 bne r2,r0,0x00180ac0            #       {  # Shift up by 1 to skip Elixir.
−
  00180ab4: 34100001 ori r16,r0,0x0001           #         r2 = r3 + 1
+
  00180ab4: 34100001 ori r16,r0,0x0001               #           r2 = r3 + 1 #Elixir-Remedy -> Antidote-Phoenix
−
  00180ab8: 24620001 addiu r2,r3,0x0001           #         ValidItems[0] = r2
+
  00180ab8: 24620001 addiu r2,r3,0x0001               #           ValidItems[0] = r2
−
  00180abc: a3a20010 sb r2,0x0010(r29)           #     }
+
  00180abc: a3a20010 sb r2,0x0010(r29)               #       }
  
−
SECTION 4 : RETURN RANDOM ITEM FROM VALID ITEMS LIST
+
# SECTION 4 : RETURN RANDOM ITEM FROM VALID ITEMS LIST
  
−
  00180ac0: 0c0088c3 jal 0x0002230c               #   r2 = [Random number]
+
  00180ac0: 0c0088c3 jal 0x0002230c                   #   r2 = [Random number]
 
  00180ac4: 00000000 nop
 
  00180ac4: 00000000 nop
−
  00180ac8: 0050 0018 mult r2,r16
+
  00180ac8: 00500018 mult r2,r16
−
  00180acc: 00001012 mflo r2                     #  r2 = [Random index]
+
  00180acc: 00001012 mflo r2                         #  r2 = [Random index]
−
  00180ad0: 04410003 bgez r2,0x 00180ae0
+
  00180ad0: 04410003 bgez r2,0x00180ae0
 
  00180ad4: 000233c3 sra r6,r2,0x0f
 
  00180ad4: 000233c3 sra r6,r2,0x0f
 
  00180ad8: 24427fff addiu r2,r2,0x7fff
 
  00180ad8: 24427fff addiu r2,r2,0x7fff
 
  00180adc: 000233c3 sra r6,r2,0x0f
 
  00180adc: 000233c3 sra r6,r2,0x0f
−
  00180ae0: 03a61021 addu r2,r29,r6              
+
  00180ae0: 03a61021 addu r2,r29,r6                  
−
  00180ae4: 90420010 lbu r2,0x0010(r2)           #  r2 = ValidItems[RandomIndex]
+
  00180ae4: 90420010 lbu r2,0x0010(r2)               #  r2 = ValidItems[RandomIndex]
 
  00180ae8: 8fbf001c lw r31,0x001c(r29)
 
  00180ae8: 8fbf001c lw r31,0x001c(r29)
−
  00180aec: 8fb0 0018 lw r16,0x 0018(r29)
+
  00180aec: 8fb00018 lw r16,0x0018(r29)
 
  00180af0: 27bd0020 addiu r29,r29,0x0020
 
  00180af0: 27bd0020 addiu r29,r29,0x0020
−
  00180af4: 03e00008 jr r31                     #  RETURN r2
+
  00180af4: 03e00008 jr r31                           #  RETURN r2
 
  00180af8: 00000000 nop
 
  00180af8: 00000000 nop
−
 
  
  
 
== Return Locations ==
 
== Return Locations ==
−
 
+
−
001805d8: [[Generate Crystal or Treasure]]
+
001805d8: [[Generate Crystal or Treasure]]

Latest revision as of 16:40, 11 October 2019

# ROUTINE : GENERATE TREASURE FOR TREASURE CHEST
#
#    PARAMETERS:
#        r4  =   [Treasure unit]
#        
#    RETURNS:
#        r2  =   [Item]

# SECTION 1 : SET UP

00180a08: 3c028019 lui r2,0x8019
00180a0c: 8c42f5fc lw r2,-0x0a04(r2)                #   r2 = MEM[0x18f5fc]
00180a10: 27bdffe0 addiu r29,r29,0xffe0
00180a14: afbf001c sw r31,0x001c(r29)               #   IF (r2 != 0)
00180a18: 14400033 bne r2,r0,0x00180ae8             #       RETURN r2
00180a1c: afb00018 sw r16,0x0018(r29)
00180a20: 00008021 addu r16,r0,r0                   #   r16 = 0 [Count of valid items]
00180a24: 00003021 addu r6,r0,r0                    #   r6 = 0  [Current equipment slot index]
00180a28: 27a50010 addiu r5,r29,0x0010              #   r5 =    [Valid item array pointer]  

# SECTION 2 : FIND VALID ITEMS ON TREASURE UNIT (EQUIPMENT) 

                                                    #   DO {
00180a2c: 00861021 addu r2,r4,r6                    #       
00180a30: 9042001a lbu r2,0x001a(r2)                #       r2 = MEM[r4+r6+0x1a) [Equip] (Equipment in current slot of treasure unit)
00180a34: 00000000 nop
00180a38: a0a20000 sb r2,0x0000(r5)                 #       ValidItems[i] (MEM[r5]) = [Equip]
00180a3c: 90a30000 lbu r3,0x0000(r5)
00180a40: 00000000 nop                              #       r6++ (LoopCount++)
00180a44: 2c6200fe sltiu r2,r3,0x00fe               #       IF ([Equip] >= 0xFE) (empty)
00180a48: 10400005 beq r2,r0,0x00180a60             #           CONTINUE (skip this item)
00180a4c: 24c60001 addiu r6,r6,0x0001
00180a50: 10600004 beq r3,r0,0x00180a64             #       IF ([Equip] == 0x00)
00180a54: 28c20007 slti r2,r6,0x0007                #           CONTINUE (skip this item)
00180a58: 24a50001 addiu r5,r5,0x0001               #       r5++ 
00180a5c: 26100001 addiu r16,r16,0x0001             #       r16++ (ValidItemCount++)
00180a60: 28c20007 slti r2,r6,0x0007
00180a64: 1440fff1 bne r2,r0,0x00180a2c             #   } WHILE (r6 < 7)
00180a68: 00000000 nop 

# SECTION 3 : NO VALID ITEMS : FIND USABLE CHEMIST ITEM (EXCEPT ELIXIR)

00180a6c: 16000014 bne r16,r0,0x00180ac0            #   IF ([Valid item count] = 0)
00180a70: 00000000 nop                              #   {   
00180a74: 0c0088c3 jal 0x0002230c                   #       r2 = [Random number]
00180a78: 00000000 nop
00180a7c: 00021840 sll r3,r2,0x01                   #       r2 = [Random number] * 13
00180a80: 00621821 addu r3,r3,r2
00180a84: 00031880 sll r3,r3,0x02
00180a88: 00621021 addu r2,r3,r2                    
00180a8c: 04410002 bgez r2,0x00180a98               #       [Unnecessary negative check?]
00180a90: 00000000 nop                              
00180a94: 24427fff addiu r2,r2,0x7fff               
00180a98: 000213c3 sra r2,r2,0x0f                   #       r2 = roll(00,0D) #not including 0D
00180a9c: 2442fff0 addiu r2,r2,0xfff0               #       r2 = roll(F0,FD) #random Item except Phoenix Down.
00180aa0: a3a20010 sb r2,0x0010(r29)                #       ValidItems[0] (STACK[0x10]) = r2
00180aa4: 93a30010 lbu r3,0x0010(r29)               #       r3 = r2
00180aa8: 00000000 nop                              #       ValidItemCount (r16) = 1
00180aac: 2c6200f5 sltiu r2,r3,0x00f5               #       IF (r3 >= 0xf5) #F5 is Elixir
00180ab0: 14400003 bne r2,r0,0x00180ac0             #       {   # Shift up by 1 to skip Elixir.
00180ab4: 34100001 ori r16,r0,0x0001                #           r2 = r3 + 1 #Elixir-Remedy -> Antidote-Phoenix
00180ab8: 24620001 addiu r2,r3,0x0001               #           ValidItems[0] = r2
00180abc: a3a20010 sb r2,0x0010(r29)                #       }

# SECTION 4 : RETURN RANDOM ITEM FROM VALID ITEMS LIST

00180ac0: 0c0088c3 jal 0x0002230c                   #   r2 = [Random number]
00180ac4: 00000000 nop
00180ac8: 00500018 mult r2,r16
00180acc: 00001012 mflo r2                          #   r2 = [Random index]
00180ad0: 04410003 bgez r2,0x00180ae0
00180ad4: 000233c3 sra r6,r2,0x0f
00180ad8: 24427fff addiu r2,r2,0x7fff
00180adc: 000233c3 sra r6,r2,0x0f
00180ae0: 03a61021 addu r2,r29,r6                   
00180ae4: 90420010 lbu r2,0x0010(r2)                #   r2 = ValidItems[RandomIndex]
00180ae8: 8fbf001c lw r31,0x001c(r29)
00180aec: 8fb00018 lw r16,0x0018(r29)
00180af0: 27bd0020 addiu r29,r29,0x0020
00180af4: 03e00008 jr r31                           #   RETURN r2
00180af8: 00000000 nop


Return Locations

001805d8: Generate Crystal or Treasure

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