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obstacle.pde
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obstacle.pde
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class Obstacle {
float initX;
float topX;
float topY;
float w = 50;
Obstacle(float initialTopX, float initialTopY) {
initX = initialTopX;
topX = initialTopX;
topY = initialTopY;
}
void draw() {
pushStyle();
rectMode(CORNERS);
fill(#49D37A);
rect(topX, topY, topX+w, height-1);
rect(topX, 0, topX+w, topY - 100);
popStyle();
topX -= 1;
}
void reset() {
topX = initX;
topY = random(100, height-100);
}
void reposition() {
topX = width;
topY = random(100, height-100);
}
boolean detectCollision(Bird b) {
boolean result = false;
if (rectsCollide(b.x, b.y, b.size, b.size, topX, topY, topX+w, height-1) ||
rectsCollide(b.x, b.y, b.size, b.size, topX, 0, topX+w, topY - 100)) {
result = true;
}
return result;
}
boolean rectsCollide(float firstX, float firstY, float firstWidth, float firstHeight,
float secondULX, float secondULY, float secondBRX, float secondBRY) {
float hh = firstHeight/2;
float hw = firstWidth/2;
return isInside(firstX - hw, firstY - hh, secondULX, secondULY, secondBRX, secondBRY) ||
isInside(firstX + hw, firstY - hh, secondULX, secondULY, secondBRX, secondBRY) ||
isInside(firstX + hw, firstY + hh, secondULX, secondULY, secondBRX, secondBRY) ||
isInside(firstX - hw, firstY + hh, secondULX, secondULY, secondBRX, secondBRY);
}
boolean isInside(float x, float y, float ulX, float ulY, float brX, float brY) {
return (x >= ulX && x <= brX && y >= ulY && y <= brY);
}
}