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POgameQuery collision detection
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6566054
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2011-07-03T22:57:01.323
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2011-07-05T07:08:26.240
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it is the first time for me to explore jQuery and gameQuery for building games using JavaScript, so am asking about sth that might look very naive, but really i cant get it. i am developing a game like Space Invader, the detection for collision between player missile and enemies not working. This is my code: the definition for my Enemy class <pre><code>function Enemy(node){ this.node = $(node); this.pts_value = 0; return true; } </code></pre> this is the code i use to add ten enemy sprite next to each other. the enemies move together to the left and the right <pre><code>$.each(new Array(10), function(index, value) { $("#enemy_group").addSprite("enemy2_"+index,{animation: enemies[2], posx: index * 55, posy: 0, width: 48, height: 48}) $("#enemy2_"+index).addClass("enemy"); $("#enemy2_"+index)[0].enemy = new Enemy($("#enemy2_"+index)); $("#enemy2_"+index)[0].pts_value = 150; }); </code></pre> so when i need to move the enemies, i move the enemies together, i move the group that includes all the sprites "#enemy_group" <pre><code> if(ENEMY_TO_RIGHT){ var enemiesNewPos = (parseInt($("#enemy_group").css("left"))) + ENEMY_SPEED; if(enemiesNewPos < PLAYGROUND_WIDTH - 550){ $("#enemy_group").css("left", ""+enemiesNewPos+"px"); } else { ENEMY_TO_RIGHT = false; } } else { var enemiesNewPos = (parseInt($("#enemy_group").css("left"))) - ENEMY_SPEED; if(enemiesNewPos > 0){ $("#enemy_group").css("left", ""+enemiesNewPos+"px"); } else { ENEMY_TO_RIGHT = true; } } </code></pre> finally for collision detection, i want to remove the enemy sprite that the players missile has hit, each missile sprite has an added class names ".playerMissiles" <pre><code> $(".playerMissiles").each(function(){ var posy = parseInt($(this).css("top")); if(posy < 0){ $(this).remove(); return; } $(this).css("top", ""+(posy - MISSILE_SPEED)+"px"); //Test for collisions var collided = $(this).collision(".enemy, .group"); if(collided.length > 0){ //An enemy has been hit! collided.each(function(){ $(this).setAnimation(enemies[0], function(node){$(node).remove();}); }) } }); </code></pre> i was following the documentation tutorial on the gameQuery website. any help appreciated, thanks,
Tags
<javascript><collision-detection><gamequery>
Title
gameQuery collision detection
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1. USSamer Makary
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