mirror of
https://github.com/maaslalani/confetty.git
synced 2024-11-14 11:46:43 +00:00
physics test simulation
This commit is contained in:
parent
b52c6ee718
commit
d4669cfdd0
@ -2,10 +2,20 @@ package physics_test
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
. "github.com/maaslalani/confetty/physics"
|
||||
)
|
||||
|
||||
const fps = 60
|
||||
|
||||
func simulate(p *Physics, d time.Duration) {
|
||||
frames := int(d.Seconds() * fps)
|
||||
for i := 0; i < frames; i++ {
|
||||
p.Update()
|
||||
}
|
||||
}
|
||||
|
||||
func TestNew(t *testing.T) {
|
||||
x := 8
|
||||
y := 20
|
||||
@ -21,7 +31,6 @@ func TestNew(t *testing.T) {
|
||||
}
|
||||
|
||||
func TestUpdate(t *testing.T) {
|
||||
fps := 60
|
||||
physics := New(Point{0, 0}, Vector{5, 5}, Vector(Gravity), float64(fps))
|
||||
|
||||
// coordinates is the location at which the object should be
|
||||
@ -37,10 +46,7 @@ func TestUpdate(t *testing.T) {
|
||||
}
|
||||
|
||||
for _, c := range coordinates {
|
||||
// 1 second of simulation
|
||||
for i := 0; i < fps; i++ {
|
||||
physics.Update()
|
||||
}
|
||||
simulate(physics, time.Second)
|
||||
|
||||
x := physics.PosX()
|
||||
y := physics.PosY()
|
||||
@ -67,15 +73,10 @@ func TestDisplacement(t *testing.T) {
|
||||
{x: 0, y: 0, vel: Vector{1, 1}, d: 1.414213562373097},
|
||||
}
|
||||
|
||||
fps := 60
|
||||
|
||||
for _, tc := range tt {
|
||||
physics := New(Point{float64(tc.x), float64(tc.y)}, tc.vel, Vector{}, float64(fps))
|
||||
|
||||
// 1 second of simulation
|
||||
for i := 0; i < fps; i++ {
|
||||
physics.Update()
|
||||
}
|
||||
simulate(physics, time.Second)
|
||||
|
||||
if physics.Displacement() != tc.d {
|
||||
t.Log(physics.Displacement())
|
||||
@ -88,14 +89,10 @@ func TestReset(t *testing.T) {
|
||||
x := 5
|
||||
y := 10
|
||||
vel := Vector{20, 20}
|
||||
fps := 60
|
||||
|
||||
physics := New(Point{float64(x), float64(y)}, vel, Vector(Gravity), float64(fps))
|
||||
|
||||
// 1 second of simulation
|
||||
for i := 0; i < fps; i++ {
|
||||
physics.Update()
|
||||
}
|
||||
simulate(physics, time.Second)
|
||||
|
||||
// store the current position after 1 second of simulation we will simulate 1
|
||||
// second again and ensure that the object reaches the same position, we
|
||||
@ -114,13 +111,10 @@ func TestReset(t *testing.T) {
|
||||
t.Fatal("expected y to be reset")
|
||||
}
|
||||
|
||||
// 1 second of simulation
|
||||
// here we are simply checking that the object reaches the same position
|
||||
// after being reset in the same amount of time. This ensures velocity and
|
||||
// acceleration were reset without checking them explicitly
|
||||
for i := 0; i < fps; i++ {
|
||||
physics.Update()
|
||||
}
|
||||
simulate(physics, time.Second)
|
||||
|
||||
if physics.PosX() != cx {
|
||||
t.Fatal("expected simulation to be repeatable")
|
||||
|
Loading…
Reference in New Issue
Block a user