botsArena/html/StupidIABattleship.php

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<?php
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function is_it_possible_to_place_ships_on_grid($gridWidth,$gridHeight,$nbShipsSize1,$nbShipsSize2,$nbShipsSize3,$nbShipsSize4,$nbShipsSize5,$nbShipsSize6){
//return false or true
//not a perfect solution
$shipsArea=$nbShipsSize1 + 2 * $nbShipsSize2 + 3 * $nbShipsSize3 + 4 * $nbShipsSize4 + 5 * $nbShipsSize5 + 6 * $nbShipsSize6;
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if( $shipsArea > $gridHeight * $gridWidth / 2){
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return false;
}
//longest ship
for($i=6; $i > 0; $i--){
$var='nbShipsSize'.$i;
if($$var > 0){
$longestShip=$$var;
break;
}
}
if( (!isset($longestShip))
OR(($longestShip > $gridWidth) && ($longestShip > $gridHeight))
){
return false;
}
return true;
}
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function place_ship_on_map($x1,$y1,$x2,$y2,$map){
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if ((($x1 <> $x2) && ($y1 <> $y2))
OR (!isset($map[$y1][$x1]))
OR (!isset($map[$y2][$x2]))){
return false;
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}
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if($x1 == $x2){
//horizontal ship
if($y1 <= $y2 ){
$start=$y1;
$end=$y2;
}else{
$start=$y2;
$end=$y1;
}
for($i = $start; $i <= $end; $i++){
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if($map[$i][$x1]==0){
$map[$i][$x1]=1;
}else{
return false;
}
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}
return $map;
}
if($y1 == $y2){
//vertical ship
if( $x1 <= $x2){
$start=$x1;
$end=$x2;
}else{
$start=$x2;
$end=$x1;
}
for( $i = $start; $i <= $end; $i++){
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if( $map[$y1][$i] == 0){
$map[$y1][$i]=1;
}else{
return false;
}
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}
return $map;
}
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}
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switch($_POST['act']){
case "init":
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$wantedVars=array(
'match_id' => false, //false-> string ; true -> integer
'opponent' => false,
'width' => true,
'height' => true,
'ship1' => true,
'ship2' => true,
'ship3' => true,
'ship4' => true,
'ship5' => true,
'ship6' => true
);
foreach($wantedVars as $key => $shouldBeInteger){
if(($shouldBeInteger) && (!is_numeric($_POST[$key]))){
echo "var is not numeric"; die;
}
$$key=$_POST[$key];
}
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if(!preg_match('/^[0-9]+-(1|2)$/',$match_id)){
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echo "parametre incorrect"; die;
}
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if(!is_it_possible_to_place_ships_on_grid($width,$height,$ship1,$ship2,$ship3,$ship4,$ship5,$ship6)){
echo "I don't want play this game";
die;
}
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a:
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$map=array();
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//construire une grille
for($i=0; $i < $width; $i++){
for($j=0; $j < $height; $j++){
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$map[$j][$i]=0;
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}
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}
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$shipsCoords=array();
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//pour toutes les tailles de bateau
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for($shipWidth = 6; $shipWidth > 0; $shipWidth--){
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//nombre de bateau à placer de cette taille
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$dynVar='ship'.$shipWidth;
$shipCount=$$dynVar; // #trollface
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for( $sh = 0; $sh < $shipCount; $sh++){ //loop for all boats witch size is $shipWidth
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//find free cases
$freeCases=array();
for($y=0; $y < $height; $y++){
for($x=0; $x < $width; $x++){
if($map[$y][$x] == 0){
$directions=array();
//test top
$top=true;
for($i = $y; $i > $y - $shipWidth; $i--){
if((!isset($map[$i][$x])) OR ($map[$i][$x]==1)){
$top=false;
$break;
}
}
if($top){
$directions[]='top';
}
//test Bottom
$bottom=true;
for($i = $y; $i < $y + $shipWidth; $i++){
if(((!isset($map[$i][$x])) OR $map[$i][$x]==1)){
$bottom=false;
$break;
}
}
if($bottom){
$directions[]='bottom';
}
//test left
$left=true;
for($i = $x; $i > $x - $shipWidth; $i--){
if((!isset($map[$y][$i])) OR ($map[$y][$i]==1)){
$left=false;
$break;
}
}
if($left){
$directions[]='left';
}
//test right
$right=true;
for($i = $x; $i < $x + $shipWidth; $i++){
if((!isset($map[$y][$i])) OR ($map[$y][$i]==1)){
$right=false;
$break;
}
}
if($right){
$directions[]='right';
}
if(count($directions)>0){
$freeCases[]=array($x,$y,$directions);
}
}
}
}
if(count($freeCases) == 0){
//can't place the ship
goto a; //#facepalm
}
shuffle($freeCases); //choose start case for this ship
shuffle($freeCases[0][2]); //choose random direction
$x=$freeCases[0][0];
$y=$freeCases[0][1];
switch($freeCases[0][2][0]){
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case 'top':
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$shipsCoords[]=$x.",".$y."-".$x.",".($y - $shipWidth + 1);
$map= place_ship_on_map($x,$y,$x,$y - $shipWidth + 1,$map);
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break;
case 'bottom':
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$shipsCoords[]=$x.",".$y."-".$x.",".($y + $shipWidth - 1);
$map= place_ship_on_map($x,$y,$x,$y + $shipWidth -1 ,$map);
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break;
case 'left':
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$shipsCoords[]=$x.",".$y."-".($x - $shipWidth + 1).",".$y;
$map= place_ship_on_map($x,$y,$x - $shipWidth + 1 ,$y,$map);
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break;
case 'right':
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$shipsCoords[]=$x.",".$y."-".($x + $shipWidth - 1 ).",".$y;
$map= place_ship_on_map($x,$y,$x + $shipWidth -1 ,$y,$map);
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break;
}
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}
}
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//print_r($map);
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echo json_encode($shipsCoords);
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break;
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case "fight":
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//for debog arena
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file_put_contents(__DIR__."/log.txt",print_r($_POST,true),FILE_APPEND);
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// if((is_int(settype($_POST['width'],"integer"))) && (is_int(settype($_POST['height'],"integer")))){
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echo rand(0,$_POST['width'] -1).",".rand(0,$_POST['height'] -1);
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// }else{
// echo "boaf".$_POST['width']."-".$_POST['height'];
// }
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die;
break;
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default:
break;
}