From eb72ec39d84b6dea1231dec70f83d2ff97375098 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robin=20H=C3=BCbner?= <profan@prfn.se>
Date: Sun, 30 Sep 2018 22:35:23 +0200
Subject: [PATCH] helpy stuff

---
 source/app.d | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/source/app.d b/source/app.d
index 26643ba..d64fa55 100644
--- a/source/app.d
+++ b/source/app.d
@@ -397,7 +397,7 @@ struct Chip8Status {
 
 		import std.file : read;
 
-		auto buf = read("programs/sqrt.ch8");
+		auto buf = read("programs/chip8_picture.ch8");
 		emu_.load(0x200, buf); // do ze load yes, will copy all the data in
 
 	} // loadShortcut
@@ -602,6 +602,7 @@ struct Chip8 {
 
 	bool run_flag;
 	bool draw_flag;
+	bool reset_flag;
 
 	void load(size_t offset, in void[] data) {
 
@@ -612,6 +613,8 @@ struct Chip8 {
 	} // load
 
 	void reset() {
+			
+		reset_flag = true;
 
 		cpu = cpu.init;
 		stack = stack.init;
@@ -629,6 +632,12 @@ struct Chip8 {
 
 	void step() {
 
+		// reset if we go OOB
+		if (cpu.pc >= 0xFFF) {
+			reset();
+			return;
+		}
+
 		cpu.opcode = ram[cpu.pc] << 8 | ram[cpu.pc + 1];
 		ushort pc_target = cast(ProgramCounter)(cpu.pc + 2u);
 
@@ -1084,7 +1093,8 @@ struct Emulator {
 
 		int w, h;
 		window.windowSize(w, h);
-		if (emu.draw_flag) {
+		if (emu.draw_flag || emu.reset_flag) {
+			if (emu.reset_flag) emu.reset_flag = false;
 			buf.update(emu.screen_buf);
 			emu.draw_flag = false;
 		}