mirror of
https://github.com/curioustorvald/Terrarum.git
synced 2026-06-11 02:54:04 +09:00
78 lines
2.6 KiB
Kotlin
78 lines
2.6 KiB
Kotlin
package net.torvald.terrarum.worlddrawer
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import com.badlogic.gdx.graphics.g2d.SpriteBatch
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import net.torvald.terrarum.blockproperties.Block
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import net.torvald.terrarum.blockstats.BlockStats
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import com.jme3.math.FastMath
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import net.torvald.colourutil.ColourTemp
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import net.torvald.terrarum.Terrarum
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import net.torvald.terrarum.blendMul
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import net.torvald.terrarum.fillRect
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import net.torvald.terrarum.gameworld.GameWorld
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/**
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* Created by minjaesong on 2015-12-31.
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*/
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object FeaturesDrawer {
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lateinit var world: GameWorld
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const val TILE_SIZE = 16
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private val ENV_COLTEMP_LOWEST = 5500
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private val ENV_COLTEMP_HIGHEST = 7500
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val ENV_COLTEMP_NOON = 6500 // 6500 == sRGB White; do not touch!
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var colTemp: Int = 0
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private set
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private val TILES_COLD = intArrayOf(
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Block.ICE_MAGICAL
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, Block.ICE_FRAGILE
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, Block.ICE_NATURAL
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, Block.SNOW)
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private val TILES_WARM = intArrayOf(
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Block.SAND_DESERT
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, Block.SAND_RED)
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fun update(delta: Float) {
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}
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/**
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* A colour filter used to provide effect that makes whole screen look warmer/cooler,
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* usually targeted for the environmental temperature (desert/winterland), hence the name.
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*/
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fun drawEnvOverlay(batch: SpriteBatch) {
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val onscreen_tiles_max = FastMath.ceil(Terrarum.HEIGHT * Terrarum.WIDTH / FastMath.sqr (TILE_SIZE.toFloat())) * 2
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val onscreen_tiles_cap = onscreen_tiles_max / 4f
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val onscreen_cold_tiles = BlockStats.getCount(*TILES_COLD).toFloat()
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val onscreen_warm_tiles = BlockStats.getCount(*TILES_WARM).toFloat()
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val colTemp_cold = colTempLinearFunc(onscreen_cold_tiles / onscreen_tiles_cap)
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val colTemp_warm = colTempLinearFunc(-(onscreen_warm_tiles / onscreen_tiles_cap))
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colTemp = colTemp_warm + colTemp_cold - ENV_COLTEMP_NOON
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val zoom = Terrarum.ingame?.screenZoom ?: 1f
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blendMul()
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batch.color = ColourTemp(colTemp)
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batch.fillRect(WorldCamera.x * zoom,
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WorldCamera.y * zoom,
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Terrarum.WIDTH * if (zoom < 1) 1f / zoom else zoom,
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Terrarum.HEIGHT * if (zoom < 1) 1f / zoom else zoom
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)
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}
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/**
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* @param x [-1 , 1], 0 for 6500K (median of ENV_COLTEMP_HIGHEST and ENV_COLTEMP_LOWEST)
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* *
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* @return
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*/
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private fun colTempLinearFunc(x: Float): Int {
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val colTempMedian = (ENV_COLTEMP_HIGHEST + ENV_COLTEMP_LOWEST) / 2
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return Math.round((ENV_COLTEMP_HIGHEST - ENV_COLTEMP_LOWEST) / 2 * FastMath.clamp(x, -1f, 1f) + colTempMedian)
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}
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} |