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issue #16: jump height is "close enough", friction and walk/stop needs fix

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This commit is contained in:
minjaesong
2019-01-20 07:03:23 +09:00
parent 5738418f39
commit 613b69a20f
2 changed files with 13 additions and 10 deletions
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21
src/net/torvald/terrarum/gameactors/ActorWBMovable.kt
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@@ -358,7 +358,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
override fun update(delta: Float) {
if (isUpdate && !flagDespawn) {
val ddelta = delta.toFloat()
val ddelta = delta.toDouble()
if (!assertPrinted) assertInit()
@@ -388,7 +388,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
// Actors are subject to the gravity and the buoyancy if they are not levitating
if (!isNoSubjectToGrav) {
applyGravitation()
applyGravitation(ddelta)
}
//applyBuoyancy()
@@ -409,7 +409,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
* This body is NON-STATIC and the other body is STATIC
*/
if (!isNoCollideWorld) {
displaceHitbox()
displaceHitbox(ddelta)
}
else {
val vecSum = externalForce + (controllerMoveDelta ?: Vector2(0.0, 0.0))
@@ -495,7 +495,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
}
}*/
fun getDrag(externalForce: Vector2): Vector2 {
fun getDrag(delta: Double, externalForce: Vector2): Vector2 {
/**
* weight; gravitational force in action
* W = mass * G (9.8 [m/s^2])
@@ -513,7 +513,10 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
val V: Vector2 = (W - D) / Terrarum.PHYS_TIME_FRAME * SI_TO_GAME_ACC
return V
return V * (Terrarum.PHYS_REF_FPS * delta).sqrt()
// FIXME v * const, where const = 1.0 for FPS=60, sqrt(2.0) for FPS=30, etc.
// this is "close enough" solution and not perfect.
}
/**
@@ -531,11 +534,11 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
*
* Apply only if not grounded; normal force is precessed separately.
*/
private fun applyGravitation() {
private fun applyGravitation(delta: Double) {
if (!isNoSubjectToGrav && !(gravitation.y > 0 && walledBottom || gravitation.y < 0 && walledTop)) {
//if (!isWalled(hitbox, COLLIDING_BOTTOM)) {
applyForce(getDrag(externalForce))
applyForce(getDrag(delta, externalForce))
//}
}
}
@@ -567,7 +570,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
}
}*/
private fun displaceHitbox() {
private fun displaceHitbox(delta: Double) {
// // HOW IT SHOULD WORK // //
// ////////////////////////
// combineVeloToMoveDelta now
@@ -633,7 +636,7 @@ open class ActorWBMovable(renderOrder: RenderOrder, val immobileBody: Boolean =
fun Double.modTileDelta() = this - this.modTile()
val vectorSum = externalForce + controllerMoveDelta
val vectorSum = (externalForce + controllerMoveDelta) * (Terrarum.PHYS_REF_FPS * delta)
val ccdSteps = minOf(16, (vectorSum.magnitudeSquared / TILE_SIZE.sqr()).floorInt() + 1) // adaptive

2
src/net/torvald/terrarum/modulebasegame/gameactors/ActorHumanoid.kt
View File

@@ -519,7 +519,7 @@ open class ActorHumanoid(
val timedJumpCharge = jumpFunc(MAX_JUMP_LENGTH, jmpCtr)
forceVec.y -= getJumpAcc(jumpPower, timedJumpCharge)
forceVec.y += getDrag(forceVec).y
forceVec.y += getDrag(1.0 / Terrarum.PHYS_REF_FPS, forceVec).y
simYPos += forceVec.y // ignoring all the fluid drag OTHER THAN THE AIR