Why does my goblin only choose a walk direction once?
- by Eogcloud
I'm working on a simpe 2d canvas game that has a small goblin sprite who I want to get pathing around the screen.
What I originally tried was a random roll that would choose a direction, the goblin would walk that direction. It didnt work effectively, he sort of wobbled in one spot.
Here's my current apporach but he only runs in a rundom direction and doesnt change. What am I doing wrong?
Here's all the relevant code to the goblin object and movement.
var goblin = {
speed: 100,
pos: [0, 0],
dir: 1,
changeDir: true,
stepCount: 0,
stepTotal: 0,
sprite: new Sprite(
goblinImage,
[0,0],
[30,45],
6,
[0,1,2,3,2,1],
true)
};
function getNewDir(){
goblin.dir = Math.floor(Math.random()*4)+1;
};
function checkGoblinMovement(){
if(goblin.changeDir){
goblin.changeDir = false;
goblin.stepCount = 0;
goblin.stepTotal = Math.floor(Math.random*650)+1;
getNewDir();
}
else
{
if(goblin.stepCount === goblin.stepTotal){
goblin.changeDir = true;
}
}
};
function update(delta){
healthCheck();
if(isGameOver){
gameOver();
}
if(!isGameOver){
updateCharLevel();
keyboardInput(delta);
moveGoblin(delta);
checkGoblinMovement();
goblin.sprite.update(delta);
//update sprites
if(mainChar.kills!=0 && bloodReady){
for(var i=0; i<bloodArray.length; i++){
bloodArray[i].sprite.update(delta);
}
}
//collision detection
if(collision(mainChar, goblin))
{
combatOutcome(combatEvent());
combatCleanup();
}
}
};
function main(){
var now = Date.now();
var delta = (now - then)/1000;
if(!isGameOver){
update(delta);
}
draw();
then = now;
};
function moveGoblin(delta){
goblin.stepCount++;
if(goblin.dir === 1){
goblin.pos[1] -= goblin.speed * delta* 2;
if(goblin.pos[1] <= 85){
goblin.pos[1] = 86;
}
}
if(goblin.dir === 2){
goblin.pos[1] += goblin.speed * delta;
if(goblin.pos[1] > 530){
goblin.pos[1] = 531;
}
}
if(goblin.dir === 3){
goblin.pos[0] -= goblin.speed * delta;
if(goblin.pos[0] < 0){
goblin.pos[0] = 1;
}
}
if(goblin.dir === 4){
goblin.pos[0] += goblin.speed * delta* 2;
if(goblin.pos[0] > 570){
goblin.pos[0] = 571;
}
}
};
