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better trajectory view

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minjaesong
2024-02-29 14:22:16 +09:00
parent 91bf11a3e0
commit 902a086a4f
1 changed files with 37 additions and 20 deletions
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57
src/net/torvald/terrarum/modulebasegame/IngameRenderer.kt
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@@ -22,6 +22,7 @@ import net.torvald.terrarum.gameactors.ActorWithBody.Companion.SI_TO_GAME_ACC
import net.torvald.terrarum.gamecontroller.KeyToggler
import net.torvald.terrarum.gameitems.GameItem
import net.torvald.terrarum.gameitems.ItemID
import net.torvald.terrarum.gameitems.mouseInInteractableRange
import net.torvald.terrarum.gameparticles.ParticleBase
import net.torvald.terrarum.gameworld.GameWorld
import net.torvald.terrarum.gameworld.fmod
@@ -769,33 +770,49 @@ object IngameRenderer : Disposable {
}
private val cubeSize = 7.0
private val externalV = Vector2()
private val maxStep = 56
private fun drawAimGuideForThrowable(frameBuffer: FrameBuffer, batch: SpriteBatch, frameDelta: Float, player: ActorWithBody, world: GameWorld, item: ItemThrowable) {
val (throwPos, throwVector) = getThrowPosAndVector(player)
val grav = world.gravitation
externalV.set(throwVector)
batch.color = Color.WHITE // TODO get better colour
mouseInInteractableRange(player) { mx, my, mtx, mty ->
val (throwPos, throwVector) = getThrowPosAndVector(player)
val grav = world.gravitation
externalV.set(throwVector)
var c = 0
while (c < 100) {
// plot a dot
Toolkit.fillArea(batch, throwPos.x.toFloat(), throwPos.y.toFloat() - cubeSize.toFloat() / 2f, 2f, 2f)
var c = 0
while (c < maxStep) {
batch.color = Color(0.9f, 0.9f, 0.9f, 0.9f * (1f - (c.toFloat() / maxStep).sqr()))
// simulate physics
applyGravitation(grav, cubeSize) // TODO use actual value instead of `cubeSize`
// move the point
throwPos += externalV
// more physics
setHorizontalFriction()
setVerticalFriction()
// plot a dot
if (c > 0) Toolkit.fillArea(
batch,
throwPos.x.toFloat(),
throwPos.y.toFloat() - cubeSize.toFloat() / 2f,
2f,
2f
)
// simulate physics
applyGravitation(grav, cubeSize) // TODO use actual value instead of `cubeSize`
// move the point
throwPos += externalV
// more physics
setHorizontalFriction()
setVerticalFriction()
// break if colliding with a tile
if (BlockCodex[world.getTileFromTerrain(throwPos.x.div(TILE_SIZED).toInt(), (throwPos.y - cubeSize/2).div(TILE_SIZED).toInt())].isSolid)
break
// break if colliding with a tile
if (BlockCodex[world.getTileFromTerrain(
throwPos.x.div(TILE_SIZED).toInt(),
(throwPos.y - cubeSize / 2).div(TILE_SIZED).toInt()
)].isSolid
)
break
c++
c++
}
1L
}
}