city coords calculation

2025-11-25 10:59:13 +05:00
parent 4d739ba8fb
commit 241d0a2f65
5 changed files with 118 additions and 1 deletions
--- a/2_EP/EP_city_calcs.asm
+++ b/2_EP/EP_city_calcs.asm
@@ -0,0 +1,60 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//      Persona 2 Eternal Punishment (PSX) JAP / Custom Characters/Data Patch
+//      Author: Sergey Shemet 21/11/2025
+//
+//       v 1.0 - Patch for city text coords calculations
+//
+
+.psx
+
+.open "2_EP/BIN/0721_CITYCODE.bin", 0x800AB000
+
+.org 0x800c4700
+    GetNewChar:
+            addiu v1,v1,1
+    StartReading:
+            lhu v0,0x0(a0)                  ;a0 - curTextAddr
+            nop
+            sltiu v0,v0,0x1000
+            bne v0,zero,GetNewChar         ;if currentChar<1000 - goto next addr+2b
+            addiu a0,a0,2
+            jr ra
+            move v0,v1                      ;return v0,v1 - charsNum
+
+
+    RetunCharsToCity:
+            lhu v0,0x0(a0)
+            nop
+            srl v0,v0,0xD ;;;;Check 13th bit (1byte system !!!)
+            bne v0,zero,IsMy1byteCity
+            clear v1 ;v1 = charCount
+
+            j StartReading
+            nop                      
+    IsMy1byteCity:
+            lhu v0,0x0(a0)
+            nop
+            andi v0,v0,0xff         ;Clear from cmd flag
+            jr ra
+            move v1,v0               ;return v0,v1 - charsNum
+
+
+
+;check lenght for hiuse names for overallcoords calc
+;.org 0x800ad30c
+;jal RetunCharsToCity
+
+
+;checklenghth for housename RECT
+.org 0x800ad688
+jal RetunCharsToCity
+
+
+;.org 0x800af1dc
+;jal RetunCharsToCityDiv2 ;OR ReturnCharsInString
+;jal 0x8001af1c
+
+.close
+
+//  compile with                    ./armips -sym 2_EP/BUILD_LOGS/0721_CITY.map -temp 2_EP/BUILD_LOGS/0721_CITY.txt 2_EP/EP_city_calcs.asm