botsArena/html/StupidIABattleship.php

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<?php
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function place_ship_on_map($x1,$y1,$x2,$y2,$map){
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if (($x1 <> $x2) && ($y1 <> $y2)){
return false;
}
if($x1 == $x2){
//horizontal ship
if($y1 <= $y2 ){
$start=$y1;
$end=$y2;
}else{
$start=$y2;
$end=$y1;
}
for($i = $start; $i <= $end; $i++){
$map[$i][$x1]=1;
}
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++){
$map[$y1][$i]=1;
}
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;
}
$$key=$_POST[$key];
}
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if(!preg_match('/^[0-9]+-(1|2)$/',$match_id)){
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echo "parametre incorrect"; die;
}
//construire une grille
for($i=0; $i < $width; $i++){
for($j=0; $j < $height; $j++){
$map[$i][$j]=0;
}
}
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$shipsCoords=array();
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//pour toutes les tailles de bateau
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for($shipWidth = 6; $shipWidth > 0; $shipWidth--){
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//nombre de bateau à placer de cette taille
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$dynVar='ship'.$shipWidth;
$shipCount=$$dynVar; // #trollface
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for( $sh = 0; $sh < $shipCount; $sh++){ //loop for all boats witch size is $shipWidth
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$directions=array();
while( count($directions) == 0){
do{
$xtest=rand(0,$width -1);
$ytest=rand(0,$height -1);
}while($map[$ytest][$xtest] == 1);
//Y a t'il la place pour le bateau vers le haut?
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if($ytest < $shipWidth -1){
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$top=false;
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}else{
$top=true;
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for($i = $ytest; $i > $ytest - $shipWidth + 1; $i--){
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if($map[$i][$xtest] == 1){
$top=false;
break;
}
}
}
//vers le bas
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if($ytest + $shipWidth -1 > $height){
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$bottom=false;
}else{
$bottom=true;
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for($y=$ytest; $i < $ytest + $shipWidth -1; $i++){
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if($map[$i][$xtest] == 1){
$bottom=false;
break;
}
}
}
//droite
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if($xtest + $shipWidth -1 > $width){
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$right=false;
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}else{
$right=true;
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for($i = $xtest; $i < $xtest + $shipWidth -1; $i++){
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if($map[$ytest][$i] == 1){
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$right= false;
break;
}
}
}
//gauche
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if($xtest < $shipWidth +1){
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$left=false;
}else{
$left=true;
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for($i = $xtest; $i > $xtest - $shipWidth + 1; $i--){
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if($map[$ytest][$i] == 1){
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$left= false;
break;
}
}
}
$directions=array();
if($top){
$directions[]='top';
}
if($bottom){
$directions[]='bottom';
}
if($left){
$directions[]='left';
}
if($right){
$directions[]='right';
}
}
shuffle($directions);
switch($directions[0]){
case 'top':
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$shipsCoords[]=$xtest.",".$ytest."-".$xtest.",".($ytest - $shipWidth + 1);
$map= place_ship_on_map($xtest,$ytest,$xtest,$ytest - $shipWidth + 1,$map);
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break;
case 'bottom':
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$shipsCoords[]=$xtest.",".$ytest."-".$xtest.",".($ytest + $shipWidth - 1);
$map= place_ship_on_map($xtest,$ytest,$xtest,$ytest + $shipWidth -1 ,$map);
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break;
case 'left':
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$shipsCoords[]=$xtest.",".$ytest."-".($xtest - $shipWidth + 1).",".$ytest;
$map= place_ship_on_map($xtest,$ytest,$xtest - $shipWidth + 1 ,$ytest,$map);
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break;
case 'right':
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$shipsCoords[]=$xtest.",".$ytest."-".($xtest + $shipWidth - 1 ).",".$ytest;
$map= place_ship_on_map($xtest,$ytest,$xtest + $shipWidth -1 ,$ytest,$map);
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break;
}
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}
}
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echo json_encode($shipsCoords);
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break;
default:
break;
}