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animated trajectory

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minjaesong
2024-03-17 17:20:49 +09:00
parent 09e5b175b8
commit aef1db49d6
1 changed files with 31 additions and 7 deletions
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38
src/net/torvald/terrarum/modulebasegame/IngameRenderer.kt
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@@ -9,6 +9,7 @@ import com.badlogic.gdx.graphics.glutils.Float16FrameBuffer
import com.badlogic.gdx.graphics.glutils.FrameBuffer import com.badlogic.gdx.graphics.glutils.FrameBuffer
import com.badlogic.gdx.graphics.glutils.ShaderProgram import com.badlogic.gdx.graphics.glutils.ShaderProgram
import com.badlogic.gdx.utils.Disposable import com.badlogic.gdx.utils.Disposable
import com.jme3.math.FastMath
import net.torvald.random.HQRNG import net.torvald.random.HQRNG
import net.torvald.terrarum.* import net.torvald.terrarum.*
import net.torvald.terrarum.App.* import net.torvald.terrarum.App.*
@@ -765,25 +766,24 @@ object IngameRenderer : Disposable {
private val cubeSize = 7.0 private val cubeSize = 7.0
private val externalV = Vector2() private val externalV = Vector2()
private val maxStep = 56 private val maxStep = 56
private val trajectoryFlow = 30
private fun drawTrajectoryForThrowable(frameBuffer: FrameBuffer, batch: SpriteBatch, frameDelta: Float, player: ActorWithBody, world: GameWorld, item: ItemThrowable) { private fun drawTrajectoryForThrowable(frameBuffer: FrameBuffer, batch: SpriteBatch, frameDelta: Float, player: ActorWithBody, world: GameWorld, item: ItemThrowable) {
val ww = world.width * TILE_SIZEF val ww = world.width * TILE_SIZEF
mouseInInteractableRange(player) { mx, my, mtx, mty -> mouseInInteractableRange(player) { mx, my, mtx, mty ->
val (throwPos, throwVector) = getThrowPosAndVector(player) val (throwPos, throwVector) = getThrowPosAndVector(player)
val grav = world.gravitation val grav = world.gravitation
val toff = (App.GLOBAL_RENDER_TIMER % trajectoryFlow) / trajectoryFlow.toFloat()
externalV.set(throwVector) externalV.set(throwVector)
val points = ArrayList<Pair<Float, Float>>()
var c = 0 var c = 0
while (c < maxStep) { while (c < maxStep) {
batch.color = Color(0.9f, 0.9f, 0.9f, 0.9f * (1f - (c.toFloat() / maxStep).sqr()))
// plot a dot // plot a dot
if (c > 0) { points.add(throwPos.x.toFloat() to throwPos.y.toFloat())
Toolkit.fillArea(batch, throwPos.x.toFloat(), throwPos.y.toFloat(), 2f, 2f)
Toolkit.fillArea(batch, throwPos.x.toFloat() + ww, throwPos.y.toFloat(), 2f, 2f)
Toolkit.fillArea(batch, throwPos.x.toFloat() - ww, throwPos.y.toFloat(), 2f, 2f)
}
// simulate physics // simulate physics
applyGravitation(grav, cubeSize) // TODO use actual value instead of `cubeSize` applyGravitation(grav, cubeSize) // TODO use actual value instead of `cubeSize`
@@ -807,16 +807,40 @@ object IngameRenderer : Disposable {
BlockCodex[tile].isSolid BlockCodex[tile].isSolid
} }
if (hitSolid) if (hitSolid) {
points.add(throwPos.x.toFloat() to throwPos.y.toFloat())
break break
}
c++ c++
} }
if (points.size > 4) {
var v0 = points[0]
var v1 = points[0]
var v2 = points[1]
var v3 = points[2]
for (i in 3 until points.size) {
// shift vars
v0 = v1; v1 = v2; v2 = v3; v3 = points[i]
val xp = FastMath.interpolateCatmullRom(toff, v0.first, v1.first, v2.first, v3.first)
val yp = FastMath.interpolateCatmullRom(toff, v0.second, v1.second, v2.second, v3.second)
batch.color = Color(0.9f, 0.9f, 0.9f, 0.9f * (1f - ((i-3+toff) / maxStep).sqr()))
Toolkit.fillArea(batch, xp, yp, 2f, 2f)
Toolkit.fillArea(batch, xp + ww, yp, 2f, 2f)
Toolkit.fillArea(batch, xp - ww, yp, 2f, 2f)
}
}
1L 1L
} }
} }
private val bodyFriction = BlockCodex[Block.AIR].friction.frictionToMult() private val bodyFriction = BlockCodex[Block.AIR].friction.frictionToMult()