< GSDP:GAM100 | CProcessing
vec2_add()
Description
Returns the sum of two Vec2s as a new Vec2.
Parameters
vec2_add(Vec2 a, Vec2 b)
Example
Vec2 position;
Vec2 speed;
void init()
{
position = vec2_set(canvasWidth / 2, canvasHeight / 2);
speed = vec2_set(50.0f, 0.0f);
ellipseMode(CENTER);
fill(color(255, 0, 0, 255));
}
bool forward = true;
void update()
{
background(color(255, 255, 255, 255));
// Check if direction should be inverted
if (position.x > canvasWidth)
{
forward = false;
position.x = canvasWidth;
}
else if (position.x < 0)
{
forward = true;
position.x = 0;
}
// Update position
if (forward)
position = vec2_add(position, vec2_scale(speed, dt()));
else if(!forward)
position = vec2_sub(position, vec2_scale(speed, dt()));
// Draw the circle
circle(position.x, position.y, 40);
}