From b847f0d4a5753b5b39a9667adfafe1976489e392 Mon Sep 17 00:00:00 2001
From: sup39 <sms@sup39.dev>
Date: Sat, 22 Oct 2022 18:15:42 +0900
Subject: [PATCH] add RedCoinTimer

---
 NTSC-J 1.0/RedCoinTimer.txt | 29 +++++++++++++
 src/RedCoinTimer.ld         |  6 +++
 src/RedCoinTimer.s          | 81 +++++++++++++++++++++++++++++++++++++
 3 files changed, 116 insertions(+)
 create mode 100644 NTSC-J 1.0/RedCoinTimer.txt
 create mode 100644 src/RedCoinTimer.ld
 create mode 100644 src/RedCoinTimer.s

diff --git a/NTSC-J 1.0/RedCoinTimer.txt b/NTSC-J 1.0/RedCoinTimer.txt
new file mode 100644
index 0000000..af0921b
--- /dev/null
+++ b/NTSC-J 1.0/RedCoinTimer.txt	
@@ -0,0 +1,29 @@
+$ Red Coin Timer (v0.1.0, 2022/10/22) [sup39]
+041962F4 49661E0D
+04206758 495F19C8
+077F8100 000000C4
+812300F4 3D408180
+394A8000 818D97E8
+816C005C 5529103E
+7D6A492E 4A8EFC94
+38610E90 4A83D105
+3821FFE0 BF81000C
+3D80817F 3BEC7FFC
+818D97D0 83CC00F4
+3BA0009C 3B800000
+2C1E0000 41A10014
+BB81000C 38210020
+38610E90 4AA0E600
+859F0004 7C1C6050
+7D9C6378 1C0003E9
+39600078 7D405B96
+396003E8 7D2A5B96
+1D6903E8 7D4B5050
+3860020C 7FA4EB78
+38A0000F 38C0FFFF
+38E0FFFF 48000011
+2532642E 25303364
+00000000 7D0802A6
+4CC63182 4BFF8085
+3BDEFFFF 3BBD000F
+4BFFFF88 00000000
diff --git a/src/RedCoinTimer.ld b/src/RedCoinTimer.ld
new file mode 100644
index 0000000..ebe12f4
--- /dev/null
+++ b/src/RedCoinTimer.ld
@@ -0,0 +1,6 @@
+$$ = 0x817f8100;
+$RCST.times = 0x817f8000;
+
+$bl$.TCoinRed.taken.incFlag = 0x801962f4;
+$b$.draw2D = 0x80206758;
+drawText = 0x817f0238;
diff --git a/src/RedCoinTimer.s b/src/RedCoinTimer.s
new file mode 100644
index 0000000..679eaec
--- /dev/null
+++ b/src/RedCoinTimer.s
@@ -0,0 +1,81 @@
+.TCoinRed.taken.incFlag:
+### r3 = smInstance
+### r9 = red coin count
+### r10 = &times
+  lwz r9, 0xF4(r3)
+  lis r10, $RCST.times@ha
+  la r10, $RCST.times@l(r10)
+### r11 = global QF
+  lwz r12, gpMarDirector$r13(r13)
+  lwz r11, 0x5C(r12)
+## store time
+  rlwinm r9, r9, 2, 0, 31
+  stwx r11, r10, r9
+## DONE
+  b TFlagManager.incFlag
+
+.set rmw, 28
+.set rmwOff, 0xC
+.set rmwAdd, 0x20
+.set x, 524
+.set y, 156
+.set fontSize, 15
+.draw2D:
+## setup
+  addi r3, r1, 0xE90
+  bl J2DGrafContext.setup2D
+## pre draw
+  addi r1, r1, -rmwAdd
+  stmw rmw, rmwOff(r1)
+.set rTPtr, r31
+.set rCnt, r30
+.set rY, r29
+.set rT0, r28
+  lis r12, $RCST.times-4@ha
+  la rTPtr, $RCST.times-4@l(r12)
+  lwz r12, TFlagManager.smInstance$r13(r13)
+  lwz rCnt, 0xF4(r12)
+  li rY, y
+  li rT0, 0
+.draw2D.loop:
+  cmpwi rCnt, 0
+  bgt+ .draw2D.loop.body
+## post draw
+  lmw rmw, rmwOff(r1)
+  addi r1, r1, rmwAdd
+## orig
+  addi r3, r1, 0xE90
+  b 4+$b$.draw2D
+.draw2D.loop.body:
+### QF -> s
+  lwzu r12, 4(rTPtr)
+  sub r0, r12, rT0
+  mr rT0, r12
+#### r0 = dQF*1001
+  mulli r0, r0, 1001
+#### r10 = dQF*1001/120 = ms
+  li r11, 120
+  divwu r10, r0, r11
+#### r9 = ms/1000 = s
+  li r11, 1000
+  divwu r9, r10, r11
+#### r10 = ms-s*1000 = ms%1000
+  mulli r11, r9, 1000
+  sub r10, r10, r11
+### params
+  li r3, x
+  mr r4, rY
+  li r5, fontSize
+  li r6, -1
+  li r7, -1
+  bl .draw2D.fmt
+  .string "%2d.%03d"
+  .align 2
+.draw2D.fmt:
+  mflr r8
+  crclr 6
+  bl drawText
+## next
+  addi rCnt, rCnt, -1
+  addi rY, rY, fontSize
+  b .draw2D.loop