1 files changed, 58 insertions, 0 deletions
diff --git a/engine/pinball_game/timer.asm b/engine/pinball_game/timer.asm
new file mode 100755
index 0000000..1200877
--- /dev/null
+++ b/engine/pinball_game/timer.asm
@@ -0,0 +1,58 @@
+StartTimer: ; 0x867d
+; Starts the timer that counts down with the specified starting time when things
+; like CatchEm Mode start.
+; input:  b = minutes
+;         c = seconds
+	ld a, c
+	ld [wTimerSeconds], a
+	ld a, b
+	ld [wTimerMinutes], a
+	xor a
+	ld [wTimerFrames], a
+	ld [wd57e], a
+	ld [wd57f], a
+	ld a, $1
+	ld [wd57d], a
+	ld a, $1
+	ld [wd580], a
+	callba Func_1404a
+	ret
+
+Func_86a4: ; 0x86a4
+	ld a, [wd57f]
+	and a
+	ret nz
+	ld a, [wTimerFrames]
+	inc a
+	cp $3c
+	jr c, .asm_86b2
+	xor a
+.asm_86b2
+	ld [wTimerFrames], a
+	ret c
+	ld hl, wTimerMinutes
+	ld a, [hld]
+	or [hl]
+	jr nz, .asm_86c3
+	ld a, $1
+	ld [wd57e], a
+	ret
+
+.asm_86c3
+	ld a, [hl]
+	sub $1
+	daa
+	jr nc, .asm_86cb
+	ld a, $59
+.asm_86cb
+	ld [hli], a
+	ld a, [hl]
+	sbc $0
+	daa
+	ld [hl], a
+	ret
+
+Func_86d2: ; 0x86d2
+	xor a
+	ld [wd57d], a
+	ret