/**
* This method detects whether the first sprite is overtop of the second sprite.
*
* @param one The first sprite
* @param two The second sprite
* @return Returns true if the two sprites are overtop of each other and false if they are not
*/
public static boolean detectCollision(Sprite one, Sprite two) {
// To prevent errors concerning concurrent modification
if (one != null && two != null) {
// X coordinate detection
int oneLeft = one.getX();
int oneRight = one.getX() + one.getWidth();
int twoLeft = two.getX();
int twoRight = two.getX() + two.getWidth();
boolean overLeftSide = (oneRight >= twoLeft) && (oneRight <= twoRight);
boolean overRightSide = (oneLeft <= twoRight) && (oneLeft >= twoLeft);
boolean overHoriz = (oneLeft <= twoLeft && oneRight >= twoRight);
// Y coordinate detection
int oneTop = one.getY();
int oneBottom = one.getY() + one.getHeight();
int twoTop = two.getY();
int twoBottom = two.getY() + two.getHeight();
boolean overTopSide = (oneBottom >= twoTop) && (oneBottom <= twoBottom);
boolean overBottomSide = (oneTop <= twoBottom) && (oneTop >= twoTop);
boolean overVert = (oneTop <= twoTop && oneBottom >= twoBottom);
if ((overLeftSide || overRightSide || overHoriz)
&& (overTopSide || overBottomSide || overVert)) {
return true;
}
}
return false;
}
public boolean collidesWith(Entity other) {
me.setBounds((int) x, (int) y, sprite.getWidth(), sprite.getHeight());
him.setBounds((int) other.x, (int) other.y, other.sprite.getWidth(), other.sprite.getHeight());
return me.intersects(him);
}
public void renderSprite(int xp, int yp, Sprite sprite, boolean fixed) {
if (fixed) {
xp -= xOffset;
yp -= yOffset;
}
for (int y = 0; y < sprite.getHeight(); y++) {
int ya = y + yp;
for (int x = 0; x < sprite.getWidth(); x++) {
int xa = x + xp;
if (xa < 0 || xa >= width || ya < 0 || ya >= height) continue;
if (sprite.transparent
&& sprite.pixels[x + y * sprite.getWidth()] == sprite.transparentColor) continue;
pixels[xa + ya * width] = sprite.pixels[x + y * sprite.getWidth()];
}
}
}
@Override
public void run() {
while (running) {
if (lastTime != 0) {
elapsedTime();
switch (game_state) {
case SPLASH_SCREEN:
break;
case MAIN_MENU:
break;
case PLAYING:
// game logic goes here
// example:
// move sprite
xPos += xVel * percent;
yPos += yVel * percent;
// check x edge collision
if (xPos < 0) {
xPos = 0;
xVel *= -1;
} else if (xPos > win_width * scale) {
xPos = win_width * scale;
xVel *= -1;
}
// check y edge collision
if (yPos < 0) {
yPos = 0;
yVel *= -1;
} else if (yPos > win_height * scale) {
yPos = win_height * scale;
yVel *= -1;
}
// touch star
if (touching
&& touchX >= xPos
&& touchX <= xPos + sprite.getWidth() * scale
&& touchY >= yPos
&& touchY <= yPos + sprite.getHeight() * scale) {
xVel *= -1;
yVel *= -1;
xPos = (float) Math.random() * win_width * scale;
yPos = (float) Math.random() * win_height * scale;
mVibrator.vibrate(22);
}
break;
}
elapsedTime();
}
try {
Thread.sleep(10);
} catch (InterruptedException ex) {
// do nothing
}
}
}
