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Vehicle.pde
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Vehicle.pde
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class Vehicle {
//physics
PVector pos;
float vel = 0, acc = 0;
//direction car is facing in radians
float dir;
float fullHealth = 100;
float health = fullHealth;
//collision
float carWidth = 2.5;
float carLength = 5.5;
float carScale = 15;
PShape carShape;
PShape collider;
//handling
float turningSpeed = 0.01;
float accelerationRate = 0.05;
Vehicle(float x, float y, PShape iCarShape) {
pos = new PVector(x, y);
carShape = iCarShape;
collider = createShape(
RECT,
-carLength*carScale/2,
-carWidth*carScale/2,
carLength*carScale,
carWidth*carScale
);
collider.setFill(false);
collider.setStroke(false);
}
PVector[] getPoints() {
shape(collider);
int a = collider.getVertexCount();
PVector[] pts = new PVector[a];
for (int i = 0; i < a; i++) {
PVector point = new PVector(collider.getVertex(i).x, collider.getVertex(i).y);
pts[i] = point.rotate(dir).add(this.pos);
}
return pts;
}
void update() {
//collisions:
for (int i = 0; i < collider.getVertexCount(); i++) {
PVector points = new PVector(collider.getVertex(i).x, collider.getVertex(i).y);
points.rotate(dir);
//points are invisible
strokeWeight(0);
stroke(255, 255, 0);
point(points.x, points.y, 1);
}
//acceleration linear decay
int carTileX = constrain(int((pos.x + (ts / 2)) / ts + 25), 0, 49);
int carTileY = constrain(int((pos.y + (ts / 2)) / ts + 25), 0, 49);
acc -= (ground[carTileX][carTileY].type == ROAD) ? 0.005 : 0.03;
//constraints on acceleration
float maxSpeed = ground[carTileX][carTileY].type == ROAD ? 1.4:0.9;
acc = constrain(acc, 0, maxSpeed);
//velocity exponetial decay
vel *= 0.9;
vel += acc;
if (vel < 0.01) vel = 0;
pos.add(PVector.fromAngle(dir).mult(vel));
//xSize & ySize are the values for the width and height of the ground array
float start = -ts * ground.length/2;
float end = -ts * ground.length/2 + ts * ground.length;
if (pos.x > end) pos.x = start;
if (pos.x < start) pos.x = end;
if (pos.y > end) pos.y = start;
if (pos.y < start) pos.y = end;
}
}
class StarterCar extends Vehicle {
StarterCar(float x, float y, PShape iCarShape) {
super(x, y, iCarShape);
}
void update() {
//left and right turns
if (keyA) {
dir -= turningSpeed * vel * 0.02 * delta;
collider.rotate(-turningSpeed * 0.02 * delta);
}
if (keyD) {
dir += turningSpeed * vel * 0.02 * delta;
collider.rotate(turningSpeed * 0.02 * delta);
}
//gas and break
if (keyW) acc += accelerationRate;
if (keyS) acc -= accelerationRate * 2;
super.update();
}
void display() {
if (health < 0)
{
state = 2;
}
pushMatrix();
scale(carScale);
rotate(HALF_PI + dir);
rotateX(HALF_PI);
rectMode(CENTER);
fill(225, 128, 0);
stroke(10);
strokeWeight(1);
shape(carShape, 0, 0);
popMatrix();
}
void drawHealth(float x, float y, float w, float h) {
pushMatrix();
{
translate(x + w/2, y + h/2);
scale(1);
rectMode(CENTER);
fill(0);
stroke(0);
strokeWeight(2);
rect(0, 0, w, h, h/2);
fill(/*#FFC400*/#FF0D0D);
rectMode(CORNER);
imageMode(CORNER);
rect(-w/2 + h/8, -h/2 + h/8, map(constrain(health, 0, fullHealth), fullHealth, 0, w - h/4, 0), h - h/4, h/2);
image(healthIcon, -250, -24, 50, 50);
}
popMatrix();
textSize(32);
textAlign(RIGHT, CENTER);
String text = "Time alive: " + frameCount/30 + " seconds";
fill(0);
text(text, width - 22, 22);
fill(255);
text(text, width - 20, 20);
text = "Score: " + score;
fill(0);
text(text, width - 22, 52);
fill(255);
text(text, width - 20, 50);
}
}