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apple2idiot
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apple2idiot/examples/chess/a2i_chess.cpp

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#include <stdio.h>
#include <string.h>
#include <Arduino.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <Apple2Idiot.h>
#include "chess_commands.h"
#include "a2i_chess.h"
void Chess::init(Apple2Idiot *a2ip, HTTPClient *httpp) {
a2i = a2ip;
http = httpp;
//strcpy(game_string, "a2a3e7e5e2e4");
}
byte Chess::handleCommand(byte command) {
switch(command) {
case CHESS_MAKE_MOVE: {
a2i->write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
Serial.println("CHESS() MAKE_MOVE");
String move_string;
move_string = a2i->read_string_from_ram(SHARED_RAM_START_ADDRESS);
Serial.println("Received move: ["+move_string+"]");
byte result = makeMove(move_string);
a2i->write_data(result, ESP_COMMAND_ADDRESS);
int address_counter = a2i->write_string_to_shared_ram(last_ai_move, SHARED_RAM_START_ADDRESS);
getBoard();
for (int i=0; i<9; i++) {
address_counter = a2i->write_string_to_shared_ram(game_board[i], address_counter + 1);
}
break;
}
//case COMMAND_SET_CITY:
//Serial.println("COMMAND_SET_CITY");
//a2i.write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
//city_name = a2i.read_string_from_ram(SHARED_RAM_START_ADDRESS);
//Serial.println("Received: ["+city_name+"]");
//break;
//case COMMAND_FETCH_WEATHER:
//Serial.println("COMMAND_FETCH_WEATHER");
//a2i.write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
//result = fetch_weather();
//break;
default: {
return COMMAND_NOT_FOUND;
}
}
}
byte Chess::makeMove(String move_string) {
/* Apple says MAKE_MOVE and sends "a2a3"
*
* The basic flow...
*
* validateMove() We check that it's valid.
* If it is we accept the move and add it to game_string
* getGameStatus() Then we check the status and return (did someone win or lose?)
* getAIMove() Then we get the AI move.
* Then we check the status and return (did someone win or lose?)
*/
if (validateMove(move_string) == CHESS_VALID_MOVE) {
strcat(game_string, move_string.c_str());
} else {
return CHESS_INVALID_MOVE;
}
char* game_status;
//b = getGameStatus(game_string);
game_status = getGameStatus(game_string);
Serial.print("after player move game_status:"); Serial.println(game_status);
if (strcmp(game_status, "in_progress") == 0) {
//char* ai_move;
//ai_move = getAIMove();
//strcat(game_string, ai_move);
//last_ai_move = getAIMove();
strcpy(last_ai_move, getAIMove());
strcat(game_string, last_ai_move);
game_status = getGameStatus(game_string);
Serial.print("after AI move game_status:"); Serial.println(game_status);
if (strcmp(game_status, "in_progress") == 0) { return STATUS_IN_PROGRESS; }
else if (strcmp(game_status, "black_won") == 0) { return STATUS_BLACK_WON; }
else if (strcmp(game_status, "white_won") == 0) { return STATUS_WHITE_WON; }
else if (strcmp(game_status, "white_won_resign") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "black_won_resign") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "stalemate") == 0) { return STATUS_STALEMATE; }
else if (strcmp(game_status, "insufficient_material") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "fifty_rule_move") == 0) { return STATUS_FIFTY_RULE_MOVE; }
else if (strcmp(game_status, "threefold_repitition") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "unknown") == 0) { return STATUS_UNKNOWN; } else { return STATUS_ERROR; }
}
else if (strcmp(game_status, "black_won") == 0) { return STATUS_BLACK_WON; }
else if (strcmp(game_status, "white_won") == 0) { return STATUS_WHITE_WON; }
else if (strcmp(game_status, "white_won_resign") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "black_won_resign") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "stalemate") == 0) { return STATUS_STALEMATE; }
else if (strcmp(game_status, "insufficient_material") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "fifty_rule_move") == 0) { return STATUS_FIFTY_RULE_MOVE; }
else if (strcmp(game_status, "threefold_repitition") == 0) { return STATUS_UNHANDLED; }
else if (strcmp(game_status, "unknown") == 0) { return STATUS_UNKNOWN; } else { return STATUS_ERROR; }
}
char* Chess::getGameStatus(char* game_string) {
Serial.print("getGameStatus() "); Serial.println(game_status);
char api_request[MAX_STR_LEN];
sprintf(api_request, "%s/status/%s", api_entry_point, game_string);
Serial.print(" "); Serial.println(api_request);
http->begin(api_request);
int httpCode = http->GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
Serial.println(" Success on HTTP request");
String payload = http->getString();
//Serial.println("++++++++++++++++++++++++");
//Serial.println(payload);
//Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F(" deserializeJson() failed: "));
Serial.println(error.f_str());
return "error";
} else {
Serial.println("----------------------");
serializeJsonPretty(doc, Serial);
Serial.println();
Serial.println("----------------------");
//return doc["gameStatus"];
return (char *)doc["gameStatus"].as<char *>();
}
} else {
Serial.println("Error on HTTP request");
return "error";
}
// Don't know how we could get here without it being an error.
return "error";
}
char* Chess::getAIMove() {
Serial.print("getAIMove() "); Serial.println(game_status);
char api_request[MAX_STR_LEN];
sprintf(api_request, "%s/next_best/%s", api_entry_point, game_string);
Serial.print(" "); Serial.println(api_request);
http->begin(api_request);
int httpCode = http->GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
Serial.println(" Success on HTTP request");
String payload = http->getString();
//Serial.println("++++++++++++++++++++++++");
//Serial.println(payload);
//Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F(" deserializeJson() failed: "));
Serial.println(error.f_str());
return "jsonerror";
} else {
Serial.println("----------------------");
serializeJsonPretty(doc, Serial);
Serial.println();
Serial.println("----------------------");
//return doc["gameStatus"];
return (char *)doc["bestNext"].as<char *>();
}
} else {
Serial.println("Error on HTTP request");
return "geterror";
}
// Don't know how we could get here without it being an error.
return "unknownerror";
}
byte Chess::validateMove(String move_string) {
Serial.print("validateMove() "); Serial.println(move_string);
char api_request[MAX_STR_LEN];
sprintf(api_request, "%s/valid_move/%s%s", api_entry_point, game_string, move_string);
Serial.print(" "); Serial.println(api_request);
http->begin(api_request);
int httpCode = http->GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
Serial.println(" Success on HTTP request");
String payload = http->getString();
//Serial.println("++++++++++++++++++++++++");
//Serial.println(payload);
//Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
return ERR;
} else {
Serial.println("----------------------");
serializeJsonPretty(doc, Serial);
Serial.println();
Serial.println("----------------------");
bool validMove = doc["validMove"];
if (validMove) {
// good move
Serial.println(" Valid move!");
return CHESS_VALID_MOVE;
} else {
Serial.println(" Invalid move!");
return CHESS_INVALID_MOVE;
}
}
} else {
Serial.println("Error on HTTP request");
return ERR;
}
// Don't know how we could get here without it being an error.
return ERR;
}
void Chess::removeSubstr (char *string, char *sub) {
char *match = string;
int len = strlen(sub);
while ((match = strstr(match, sub))) {
*match = '\0';
strcat(string, match+len);
match++;
}
}
void Chess::getBoard() {
Serial.println("getBoard() ");
char api_request[MAX_STR_LEN];
sprintf(api_request, "%s/board_string/%s", api_entry_point, game_string);
Serial.print(" "); Serial.println(api_request);
http->begin(api_request);
int httpCode = http->GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
Serial.println(" Success on HTTP request");
String payload = http->getString();
//Serial.println("++++++++++++++++++++++++");
//Serial.println(payload);
//Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
} else {
//Serial.println("----------------------");
//serializeJsonPretty(doc, Serial);
//Serial.println();
//Serial.println("----------------------");
//Serial.println(" Break up the board...");
//Serial.print(" BOARD:"); Serial.println((char *)doc["board"].as<char *>());
char* pch = NULL;
pch = strtok((char *)doc["board"].as<char *>(), "\n");
//Serial.print(" pch:");Serial.println(pch);
int row_count = 0;
while (pch != NULL) {
char board_line[30];
strcpy(board_line, pch);
removeSubstr(board_line, "[37m");
removeSubstr(board_line, "[0m");
removeSubstr(board_line, "\n");
Serial.print("(");Serial.print(row_count);Serial.print(")");
Serial.print(board_line); Serial.println("|");
strcpy(game_board[row_count], board_line); // valid
pch = strtok(NULL, "\n");
row_count++;
}
Serial.println();
for (int i=0; i<9; i++) {
Serial.print("[");Serial.print(game_board[i]);Serial.println("]");
}
}
} else {
Serial.println("Error on HTTP request");
}
// Don't know how we could get here without it being an error.
}
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