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water flow works

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turns out, var.coerceIn() returns value and does not modify the var
This commit is contained in:
Minjae Song
2018-12-18 01:48:38 +09:00
parent 62319ba4d2
commit 23d557b6b2
2 changed files with 24 additions and 72 deletions
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67
src/net/torvald/terrarum/modulebasegame/gameworld/WorldSimulator.kt
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@@ -1,13 +1,16 @@
package net.torvald.terrarum.modulebasegame.gameworld
import com.badlogic.gdx.Input
import com.badlogic.gdx.graphics.Color
import net.torvald.terrarum.AppLoader
import net.torvald.terrarum.AppLoader.printdbg
import net.torvald.terrarum.Terrarum
import net.torvald.terrarum.blockproperties.Block
import net.torvald.terrarum.roundInt
import net.torvald.terrarum.worlddrawer.FeaturesDrawer
import net.torvald.terrarum.blockproperties.BlockCodex
import net.torvald.terrarum.blockproperties.Fluid
import net.torvald.terrarum.gamecontroller.KeyToggler
import net.torvald.terrarum.gameworld.FluidType
import net.torvald.terrarum.modulebasegame.gameactors.ActorHumanoid
@@ -79,7 +82,6 @@ object WorldSimulator {
makeFluidMapFromWorld()
simCompression()
//myFluidSim()
if (AppLoader.IS_DEVELOPMENT_BUILD) {
monitorIllegalFluidSetup() // non-air non-zero fluid is kinda inevitable
@@ -96,51 +98,6 @@ object WorldSimulator {
return ((fluid.type sameAs type || fluid.type sameAs Fluid.NULL) && !BlockCodex[tile].isSolid)
}
fun isSolid(worldX: Int, worldY: Int): Boolean {
val tile = world.getTileFromTerrain(worldX, worldY)
val fluid = world.getFluid(worldX, worldY)
return (tile != Block.WATER && tile != Block.AIR && fluid.amount == 0f)
}
private fun myFluidSim() {
for (y in 1 until fluidMap.size - 1) {
for (x in 1 until fluidMap[0].size - 1) {
val worldX = x + updateXFrom
val worldY = y + updateYFrom
val remainingType = fluidTypeMap[y][x]
if (!isFlowable(remainingType, worldX, worldY)) continue
var remainingMass = fluidMap[y][x]
var flow = 0f
if (remainingMass != 0f && remainingType == Fluid.NULL) throw InternalError("wtf? (Type: $remainingType, fill: $remainingMass)")
if (remainingMass == 0f) continue
// move down
if (isFlowable(remainingType, worldX, worldY + 1)) {
//fluidNewMap[y][x] -= remainingMass
//fluidNewMap[y + 1][x] += remainingMass
//fluidNewTypeMap[y + 1][x] = remainingType
flow = getStableStateB(remainingMass + fluidMap[y + 1][x]) - fluidMap[y + 1][x]
if (flow > minFlow) {
flow *= 0.5f // leads to smoother flow
}
flow.coerceIn(0f, minOf(maxSpeed, remainingMass))
fluidNewMap[y][x] -= flow
fluidNewMap[y + 1][x] += flow
fluidNewTypeMap[y + 1][x] = remainingType
remainingMass -= flow
}
if (remainingMass <= 0) continue
}
}
}
/*
Explanation of get_stable_state_b (well, kind-of) :
@@ -210,12 +167,12 @@ object WorldSimulator {
if (remainingMass <= 0) continue
// The block below this one
if (isFlowable(remainingType, worldX, worldY + 1)) { // TODO use isFlowable
if (isFlowable(remainingType, worldX, worldY + 1)) {
flow = getStableStateB(remainingMass + fluidMap[y + 1][x]) - fluidMap[y + 1][x]
if (flow > minFlow) {
flow *= 0.5f // leads to smoother flow
}
flow.coerceIn(0f, minOf(maxSpeed, remainingMass))
flow = flow.coerceIn(0f, minOf(maxSpeed, remainingMass))
fluidNewMap[y][x] -= flow
fluidNewMap[y + 1][x] += flow
@@ -226,13 +183,13 @@ object WorldSimulator {
if (remainingMass <= 0) continue
// Left
if (isFlowable(remainingType, worldX - 1, worldY)) { // TODO use isFlowable
if (isFlowable(remainingType, worldX - 1, worldY)) {
// Equalise the amount fo water in this block and its neighbour
flow = (fluidMap[y][x] - fluidMap[y][x - 1]) / 4f
if (flow > minFlow) {
flow *= 0.5f
}
flow.coerceIn(0f, remainingMass)
flow = flow.coerceIn(0f, remainingMass)
fluidNewMap[y][x] -= flow
fluidNewMap[y][x - 1] += flow
@@ -243,13 +200,13 @@ object WorldSimulator {
if (remainingMass <= 0) continue
// Right
if (isFlowable(remainingType, worldX + 1, worldY)) { // TODO use isFlowable
if (isFlowable(remainingType, worldX + 1, worldY)) {
// Equalise the amount fo water in this block and its neighbour
flow = (fluidMap[y][x] - fluidMap[y][x + 1]) / 4f
if (flow > minFlow) {
flow *= 0.5f
}
flow.coerceIn(0f, remainingMass)
flow = flow.coerceIn(0f, remainingMass)
fluidNewMap[y][x] -= flow
fluidNewMap[y][x + 1] += flow
@@ -260,18 +217,18 @@ object WorldSimulator {
if (remainingMass <= 0) continue
// Up; only compressed water flows upwards
/*if (isFlowable(remainingType, worldX, worldY - 1)) { // TODO use isFlowable
if (isFlowable(remainingType, worldX, worldY - 1)) {
flow = remainingMass - getStableStateB(remainingMass + fluidMap[y - 1][x])
if (flow > minFlow) {
flow *= 0.5f
}
flow.coerceIn(0f, minOf(maxSpeed, remainingMass))
flow = flow.coerceIn(0f, minOf(maxSpeed, remainingMass))
fluidNewMap[y][x] -= flow
fluidNewMap[y - 1][x] += flow
fluidNewTypeMap[y - 1][x] = remainingType
remainingMass -= flow
}*/
}
}