RenderedPlatform GenerateVariableHightPlatform(Rect cameraRect)
{
//determine width of platform from platform budget
GameObject prefab = floatingPlatforms[(int)Mathf.Floor(Random.Range(0, floatingPlatforms.Count - 1))];
//pick random height difference over interval (-inf, 0.5*v0^2/g)
float yOffsetBound = 0.5f * Mathf.Pow(jumpVelocity, 2) / gravity;
float yOffset = Random.Range(0, yOffsetBound);
float xOffsetBound = (
Mathf.Sqrt(jumpVelocity * jumpVelocity * xVelocity * xVelocity - (2 * gravity * xVelocity * xVelocity * yOffset))
+ jumpVelocity * xVelocity) / gravity;
float budgetWeight = this.budgetWeight(MIN_SPACING, xOffsetBound);
float xOffset = Random.Range(MIN_SPACING + budgetWeight, xOffsetBound);
if (platforms.Count > 0)
{
RenderedPlatform previous = platforms[platforms.Count - 1];
float yPosition = Mathf.Clamp(previous.upperRight.y + yOffset,
cameraRect.yMin + xBufferDistance, cameraRect.yMax - yBufferDistance);
return(RenderedPlatform.FromUpperLeft(prefab,
new Vector3(previous.upperRight.x + xOffset, yPosition, 0)));
}
else
{
return(RenderedPlatform.FromUpperLeft(prefab,
new Vector3(cameraRect.center.x + xOffset, cameraRect.center.y + yOffset, 0)));
}
}
RenderedPlatform GenerateStaticHeightPlatform(Rect cameraRect)
{
//determine width of platform from platform budget
GameObject prefab = groundedPlatforms[(int)Mathf.Floor(Random.Range(0, groundedPlatforms.Count - 1))];
//determine spacing
float xOffsetBound = 2 * jumpVelocity * xVelocity / gravity;
float budgetWeight = this.budgetWeight(MIN_SPACING, xOffsetBound);
float xOffset = Random.Range(MIN_SPACING + budgetWeight, xOffsetBound);
//Debug.Log("Interval: " + (MIN_SPACING + budgetWeight) + " " + xOffsetBound);
if (platforms.Count > 0)
{
RenderedPlatform previous = platforms[platforms.Count - 1];
return(new RenderedPlatform(prefab, new Vector3(previous.upperRight.x + xOffset, waterHeight)));
}
else
{
return(new RenderedPlatform(prefab, new Vector3(cameraRect.center.x + xOffset, waterHeight)));
}
}
// Update is called once per frame
void Update()
{
//get camera pose
Rect cameraView = CameraMovement.CameraRect();
//create batch of platforms whenever camera is within given distance of the end of the last run
if (cameraView.xMax + LOOKAHEAD_DISTANCE > distanceGenerated)
{
//generate run of new platforms
float targetDistance = distanceGenerated + RUN_LENGTH;
while (distanceGenerated < targetDistance)
{
RenderedPlatform platform = (Random.value > 0.65) ? GenerateStaticHeightPlatform(cameraView) :
(ClimateEvents.GetInstance().waterLevel ? GenerateStaticHeightPlatform(cameraView) : GenerateVariableHightPlatform(cameraView));
distanceGenerated = platform.upperRight.x;
platforms.Add(platform);
}
}
//discard old platforms
for (int i = 0; i < platforms.Count; i++)
{
if (platforms[i].obj == null)
{
platforms.RemoveAt(i);
i--;
continue;
}
if (platforms[i].obj.transform.position.x + (platforms[i].width / 2) < cameraView.xMin)
{
Destroy(platforms[i].obj);
platforms.RemoveAt(i);
i--;
}
}
}