Esp little game engine

Details

https://github.com/corax89/esp8266_game_engine

The game engine has a virtual screen resolution of 128x128 pixels, 16 colors, one background layer, 32 soft sprites with collision tracking and rotation, 20kb of memory for the game and variables. The virtual machine performs approximately 900,000 operations per second at a drawing rate of 20 frames per second. Control of eight buttons.

The online compiler of the C subset to the assembler, and then to the virtual machine code.

User guide: https://corax89.github.io/esp8266Game/user_guide/index.html

VM description: https://github.com/corax89/esp8266_game_engine/blob/master/esp_little_game_engine_description.pdf

Files

gameconsole_bb.png

Fritzing

Portable Network Graphics (PNG) - 283.77 kB - 03/15/2019 at 14:05

Preview

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Components

1 × esp8266

1 × tft 240x320 ili9341

1 × PCF8574 Microprocessors, Microcontrollers, DSPs / Microprocessors (MPUs)

1 × gameboy case

Project Logs

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Download files using wi-fi
Igor • 3 days ago • 0 comments

When you turn on the console, hold down the B key and follow the on-screen instructions. In the web shell you can view files, delete files and upload files.
Zombie defence
Igor • 07/14/2019 at 07:38 • 0 comments

https://corax89.github.io/esp8266Game/index.html?src=0efd4445900ed81410c1cc03eb03ec1d
Game fish life
Igor • 07/03/2019 at 16:03 • 0 comments

https://corax89.github.io/esp8266Game/index.html?src=10229352aa5d8061251ef1ab9c4e6e2c
Added sound. Updated physics.
Igor • 06/25/2019 at 19:19 • 0 comments

Rtttl playback example https://corax89.github.io/esp8266Game/index.html?src=0ad3501609db2125132f7ccf2ed02325
The work of the old physics engine
The work of the new physics engine
Fourinarow (Connect Four)
Igor • 06/15/2019 at 15:19 • 0 comments

https://corax89.github.io/esp8266Game/index.html?src=2aa481d0b7511c7c22d8faa971475b6f
Ninja escape
Igor • 06/09/2019 at 17:25 • 0 comments

https://corax89.github.io/esp8266Game/index.html?src=d7ddb9590c429f3f5818cd99be6588aa
User guide
Igor • 06/02/2019 at 20:08 • 0 comments

User shando69 wrote user guide

https://corax89.github.io/esp8266Game/user_guide/index.html
Game 1916
Igor • 06/02/2019 at 16:03 • 0 comments

https://corax89.github.io/esp8266Game/index.html?src=ac92a491cb80cf65b7741877bfb21e2a
Wormblast
Igor • 05/26/2019 at 14:51 • 0 comments

Do not let your worm drown.
https://corax89.github.io/esp8266Game/index.html?src=e6615c103455495539efa5e0fc71bbd9
Performance test on different screens
Igor • 05/03/2019 at 19:17 • 0 comments

ESP little game engine can now work on all screens supported by the TFT_eSPI library

View all 17 project logs

Discussions

RomanS wrote 06/05/2019 at 14:18

Hello Igor. Could i port your engine for my ESPboy project?

Are you sure? yes | no

Igor wrote 06/05/2019 at 18:21

Yes. I will be happy.

Are you sure? yes | no

shando69 wrote 05/25/2019 at 23:57

Sorry, ignore the last bit of my previous comment. I've just found the examples in the online editor :)

Are you sure? yes | no

shando69 wrote 05/25/2019 at 23:52

Looks like an excellent project. I am about to buy an ODROID-GO and was wondering if there were any plans to expand the screen size from 128x128? The ODROID has a 320x240 screen. Also, is there any way to see the code behind some of the bin files?

Are you sure? yes | no

Igor wrote 05/26/2019 at 14:40

I ran this firmware on esp32. However, this requires a small alteration of the code.

Are you sure? yes | no

mystboy666 wrote 05/10/2019 at 09:54

Hi there!

Is there any plan supporting these small monochrome oled displays?

Thanks!

Are you sure? yes | no

Igor wrote 05/20/2019 at 14:38

I did not plan this, but it is possible.

Are you sure? yes | no

Hendra Kusumah wrote 04/23/2019 at 06:26

hi there, just try out your firmware and it work. But I use a different kind of ili9341 board and the screen got flipped upside down, is there anyway to change/flipped the screen orientation?

Are you sure? yes | no

Hendra Kusumah wrote 04/23/2019 at 06:29

I am using this board:

https://www.tindie.com/products/thirtytwoteeth/game-boy-zero-handheld-edition/

since it is basically an ili9341 breakout without the pi zero I manage to get it running but there is the problem I mention above

Are you sure? yes | no

Igor wrote 04/23/2019 at 18:13

In the setup () function, find tft.setRotation (1); and change to tft.setRotation (3); Or try to substitute other values from 0 to 3

Are you sure? yes | no

Hendra Kusumah wrote 04/24/2019 at 06:12

Ok, it works. Thanks for the follow up

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 07:34

Anyone is interested in Wii nunchuck support (I didn't have any pcf8574 laying around..)?

Are you sure? yes | no

Igor wrote 04/04/2019 at 16:59

Here I found the instructions for connecting. This is i2c so the scheme does not change. Need to rewrite the button processing code. https://www.instructables.com/id/ESP8266-and-Visuino-WiFi-Remote-Control-Smart-Car-/

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 18:40

Yup, already done it, code can be found in:

https://github.com/mali1741/esp8266_game_engine/tree/nunchuck

Are you sure? yes | no

l3pr3ch4un wrote 04/03/2019 at 15:18

Nice project! I've had some problems running some of the games (mars and breakout) on the esp, and found that setinterrupt in cpu.ino didn't use the stack as in cpu.js . When I changed it to behave like in cpu.js it works fine though.

Are you sure? yes | no

dan wrote 04/03/2019 at 22:52

Im have issues with running games on my ESP hardware also. Can you explain more in detail what you did to fix this problem.

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 07:17

I can get a github pull request out tomorrow, but until then:
in cpu.ino:setinterrupt

shadow_reg[0] = flagsToByte();
for(int8_t j = 1; j <= 15; j++){
shadow_reg[j] = reg[j];
}

should be changed to:

reg[0] -= 2;
writeInt(reg[0], flagsToByte());
for(int8_t j = 1; j <= 15; j++){
reg[0] -= 2;
writeInt(reg[0], reg[j]);
}

and the op return code 0x9A:

for(int8_t j = 15; j >= 1; j--){
reg[j] = shadow_reg[j];
}
byteToFlags(shadow_reg[0]);

should be changed accordingly:

for(int8_t j = 15; j >= 1; j--){
reg[j] = readInt(reg[0]);
reg[0] += 2;
}
byteToFlags(readInt(reg[0]));
reg[0] += 2;

Besides that there are a few cpu-instructions that handles sprites that need a limiter of the spite index ( & 31 as most of them already has).

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 18:39

The patch can now be found in:

https://github.com/mali1741/esp8266_game_engine/tree/fixvm

Are you sure? yes | no

Igor wrote 04/04/2019 at 17:02

Strange. This should not be a problem. Interrupt handling through additional registers faster.

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 17:44

Yes, I agree. Somehow I got a full interrupt queue with the shadow reg code.

Are you sure? yes | no

l3pr3ch4un wrote 04/04/2019 at 21:22

So I found the error, the reg and shadow_reg arrays are one element short!
int16_t reg[16];
int16_t shadow_reg[16];

should do the trick!

Are you sure? yes | no

Igor wrote 04/08/2019 at 06:09

Thanks!

Are you sure? yes | no

Mr Rockgovsky wrote 04/01/2019 at 09:07

I'm not sure how I'm supposed to run this thing - I uploaded the game.bin file to the esp8266,
but don't know what else should I do/how to proceed.
I've also struggled to hook everything up properly, and I'm not sure if I've done everything correctly. Could you provide a more detalied schematic? Thanks in advance, very nice work!

Are you sure? yes | no

Igor wrote 04/01/2019 at 15:24

I use this shields https://www.aliexpress.com/item/TFT-2-4-Touch-Shield-V1-0-0-for-LOLIN-WEMOS-D1-mini-2-4-inch/32919729730.html and https://www.aliexpress.com/item/PCF8574-PCF8574T-I-O-For-I2C-IIC-Port-Interface-Support-Cascading-Extended-Module-For-Arduino-Expansion/32872163401.html

Are you sure? yes | no

amera64 wrote 03/19/2019 at 06:04

I have everything hooked up and firmware loaded but can't figure out how to load the .bin file into the Esp8266. Can anyone point me in the right direction? Thanks

Are you sure? yes | no

Igor wrote 03/21/2019 at 19:42

https://github.com/esp8266/arduino-esp8266fs-plugin

All uploaded files must be in the data folder.

Are you sure? yes | no

tormozedison wrote 03/12/2019 at 20:17

Cool! A project with open source firmware, but top secret circuit diagram. Why?

Are you sure? yes | no

Igor wrote 03/15/2019 at 13:00

Nothing secret. Just a screen on spi and a keyboard on i2c

Are you sure? yes | no

tormozedison wrote 03/15/2019 at 21:04

Thanks. Take a look at this review:

https://habr.com/ru/post/443918

Are you sure? yes | no

Esp little game engine

Description

Details

Files

gameconsole_bb.png

Components

Project Logs

Collapse logs

Download files using wi-fi

Zombie defence

Game fish life

Added sound. Updated physics.

Fourinarow (Connect Four)

Ninja escape

User guide

Game 1916

Wormblast

Performance test on different screens

Discussions

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Esp little game engine

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