Hi
So I was working on my project, and I started collision testing for a tilemap. Now I ran into an issue… glitching through walls. When WASD movement is handled, if keys are clicked fast enough then collision testing doesn’t work.
Background:
Each tile has a rectangle for it’s region, and the player has it’s own region. For collision checking, I see if the regions intersect and the return that there was a collision.
Movement handling:
[icode] /**
* Handle movement for the player
*/
public void handleMovement(float speed){
if(System.nanoTime() - stamp < 600000)
return;
stamp = System.nanoTime();
// handle the coordinates
Keyboard.poll();
float x = 0.0f;
float y = 0.0f;
boolean left = false, top = false, right = false, bottom = false;
if (Keyboard.isKeyDown(Keyboard.KEY_W)) {
y = speed;
top = true;
}
if (Keyboard.isKeyDown(Keyboard.KEY_S)) {
y = -speed;
bottom = true;
}
if (Keyboard.isKeyDown(Keyboard.KEY_A)) {
x = speed;
left = true;
}
if (Keyboard.isKeyDown(Keyboard.KEY_D)) {
x = -speed;
right = true;
}
// change movement
int direction = convertDirection(left, right, top, bottom);
if(!Collisions.isCollision(direction)){
if(!Collisions.isCollision(direction)){
camera.addToPosition(x, y);
}
} else {
// back up
camera.addToPosition(-x, -y);
}
if(direction > 0){
if(Collisions.isCollision(direction)){
if(Collisions.isCollision(direction)){
camera.addToPosition(-x, -y);
}
} else {
if(Collisions.isCollision(direction)){
if(Collisions.isCollision(direction)){
camera.addToPosition(-x, -y);
}
} else {
// Nothing.
}
}
}
}
[/icode]
[icode] /**
* Convert the four booleans to an integer
*/
public int convertDirection(boolean left, boolean right,
boolean top, boolean bottom){
if(left){
if(right){
// Doubtully so
return -1;
} else {
if(top){
if(bottom){
// Doubtully so
return -1;
} else {
return 5;
}
} else {
if(bottom){
return 6;
} else {
return 1;
}
}
}
} else {
if(right){
if(top){
if(bottom){
// Doubtully so
return -1;
} else {
return 8;
}
} else {
if(bottom){
return 7;
} else {
return 2;
}
}
} else {
if(top){
if(bottom){
// Doubtully so
return -1;
} else {
return 4;
}
} else {
if(bottom){
return 3;
} else {
// Doubtully so
return -1;
}
}
}
}
}
[/icode]
Any thoughts or suggestions would help 