Checks map max X and Y
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BATTLE.BIN : - Checks_map_max_X_and_Y ------------------------------------------------------------------------------------------ Parameter : r4 = Pointer to some AI Tile's Table (1 bit per tile) Return : r2 = Nb of Tiles enabled in r4 Table ------------------------------------------------------------------------------------------ 00197c68: 27bdfff0 addiu r29,r29,-0x0010 | 00197c6c: 00004821 addu r9,r0,r0 | 00197c70: 3c0c801a lui r12,0x801a | 00197c74: 258cf3c4 addiu r12,r12,-0x0c3c |0x8019f3c4 00197c78: 00005821 addu r11,r0,r0 |Initialize elevation counter 00197c7c: 3c0d801a lui r13,0x801a | 00197c80: 91ad01ff lbu r13,0x01ff(r13) |Map Max Y @LOOP - both elevation 00197c84: 00000000 nop | 00197c88: 11a00018 beq r13,r0,0x00197cec #If Max Y is invalid : branch to next elevation 00197c8c: 00003021 addu r6,r0,r0 |Initialize Y counter 00197c90: 918a0e3b lbu r10,0x0e3b(r12) |Map Max Y 00197c94: 00803821 addu r7,r4,r0 |Prepare Dynamic pointer to AI Table of Tiles flags @LOOP - All Y row (halfwords of flags) 00197c98: 94e20000 lhu r2,0x0000(r7) |This Y row Flags 00197c9c: 00000000 nop | 00197ca0: 1040000e beq r2,r0,0x00197cdc #If All Tile's flags are off : branch to Next Y row 00197ca4: 00000000 nop | 00197ca8: 91850e3a lbu r5,0x0e3a(r12) |Load map max X 00197cac: 00000000 nop | 00197cb0: 18a0000a blez r5,0x00197cdc #If Max X is invalid : branch to Next Y row 00197cb4: 00001821 addu r3,r0,r0 |Initialize X counter 00197cb8: 00404021 addu r8,r2,r0 |Y row flags 00197cbc: 00681004 sllv r2,r8,r3 |Shift flags so tile of interest flag is in 0x8000 position @LOOP 00197cc0: 30428000 andi r2,r2,0x8000 | 00197cc4: 10400002 beq r2,r0,0x00197cd0 #If This Tile flag is ON 00197cc8: 24630001 addiu r3,r3,0x0001 |X counter + 1 00197ccc: 25290001 addiu r9,r9,0x0001 |Increase Tile ON counter 00197cd0: 0065102a slt r2,r3,r5 | 00197cd4: 1440fffa bne r2,r0,0x00197cc0 #Loop while X < Max X 00197cd8: 00681004 sllv r2,r8,r3 |Shift flags so tile of interest flag is in 0x8000 position 00197cdc: 24c60001 addiu r6,r6,0x0001 |Y counter +1 00197ce0: 00ca102a slt r2,r6,r10 | 00197ce4: 1440ffec bne r2,r0,0x00197c98 #Branch while Y < Max Y 00197ce8: 24e70002 addiu r7,r7,0x0002 |Halfword offset 00197cec: 256b0001 addiu r11,r11,0x0001 |Elevation counter + 1 00197cf0: 29620002 slti r2,r11,0x0002 |Set if 0x1 < 2 00197cf4: 1440ffe3 bne r2,r0,0x00197c84 #Branch if so 00197cf8: 24840024 addiu r4,r4,0x0024 |Elevation offset 00197cfc: 01201021 addu r2,r9,r0 |Returns Number of Tiles enabled in considered Table 00197d00: 27bd0010 addiu r29,r29,0x0010 00197d04: 03e00008 jr r31 00197d08: 00000000 nop
Return locations
BATTLE.BIN 0019771c: Store_ability/skillset_data,_set_AI_settings_for_ability? r4 = AI 0x0b4c 0019c8a8: Evaluate_Linear_Ability_Behaviors r4 = AI 0x0bdc 0019c8b4: Evaluate_Linear_Ability_Behaviors r4 = AI 0x0b94
