core/src/ru/deadsoftware/cavedroid/game/model/block/Block.kt

   1 package ru.deadsoftware.cavedroid.game.model.block
   2
   3 import com.badlogic.gdx.graphics.g2d.Sprite
   4 import com.badlogic.gdx.graphics.g2d.SpriteBatch
   5 import com.badlogic.gdx.math.Rectangle
   6 import com.badlogic.gdx.utils.TimeUtils
   7 import ru.deadsoftware.cavedroid.game.model.item.Item
   8 import ru.deadsoftware.cavedroid.misc.utils.colorFromHexString
   9 import kotlin.contracts.ExperimentalContracts
  10 import kotlin.contracts.contract
  11
  12 @OptIn(ExperimentalContracts::class)
  13 sealed class Block {
  14
  15     abstract val params: CommonBlockParams
  16
  17     val width: Float get() = 16f - params.collisionMargins.left - params.collisionMargins.right
  18     val height: Float get() = 16f - params.collisionMargins.top - params.collisionMargins.bottom
  19
  20     val spriteWidth: Float get() = 16f - params.spriteMargins.left - params.spriteMargins.right
  21     val spriteHeight: Float get() = 16f - params.spriteMargins.top - params.spriteMargins.bottom
  22
  23     private var animation: Array<Sprite>? = null
  24
  25     private var _sprite: Sprite? = null
  26         get() {
  27             return animation?.get(currentAnimationFrame) ?: field
  28         }
  29
  30     val sprite: Sprite
  31         get() = requireNotNull(_sprite) { "null sprite for block '${params.key}'" }
  32
  33     private val currentAnimationFrame: Int
  34         get() {
  35             return params.animationInfo?.let { animInfo ->
  36                 ((TimeUtils.millis() / ANIMATION_FRAME_DURATION_MS) % animInfo.framesCount).toInt()
  37             } ?: 0
  38         }
  39
  40     override fun hashCode(): Int {
  41         return params.key.hashCode()
  42     }
  43
  44     override fun equals(other: Any?): Boolean {
  45         return params.key == (other as Item).params.key
  46     }
  47
  48     fun initialize() {
  49         initAnimation()
  50         initSprite()
  51     }
  52
  53     private fun initAnimation() {
  54         animation = params.animationInfo?.let { animInfo ->
  55             requireNotNull(params.texture) { "Cannot derive animation frames from null sprite" }
  56             Array(animInfo.framesCount) { y ->
  57                 val width = 16 - params.spriteMargins.left - params.spriteMargins.right
  58                 val height = 16 - params.spriteMargins.top - params.spriteMargins.bottom
  59                 Sprite(params.texture, params.spriteMargins.left, 16 * y + params.spriteMargins.top, width, height)
  60                     .apply {
  61                         flip(false, true)
  62                         params.tint?.let { tint -> color = colorFromHexString(tint) }
  63                     }
  64             }
  65         }
  66     }
  67
  68     private fun initSprite() {
  69         _sprite = animation?.get(0) ?: params.texture?.let { tex ->
  70             val width = 16 - params.spriteMargins.left - params.spriteMargins.right
  71             val height = 16 - params.spriteMargins.top - params.spriteMargins.bottom
  72             Sprite(tex, params.spriteMargins.left, params.spriteMargins.top, width, height)
  73                 .apply {
  74                     flip(false, true)
  75                     params.tint?.let { tint -> color = colorFromHexString(tint) }
  76                 }
  77         }
  78     }
  79
  80     fun requireSprite() = requireNotNull(sprite)
  81
  82     fun draw(spriter: SpriteBatch, x: Float, y: Float) {
  83         sprite.apply {
  84             setBounds(
  85                 /* x = */ x + params.spriteMargins.left,
  86                 /* y = */ y + params.spriteMargins.top,
  87                 /* width = */ spriteWidth,
  88                 /* height = */ spriteHeight
  89             )
  90             draw(spriter)
  91         }
  92     }
  93
  94     fun isFluid(): Boolean {
  95         contract { returns(true) implies (this@Block is Fluid) }
  96         return this is Fluid
  97     }
  98
  99     fun isWater(): Boolean {
 100         contract { returns(true) implies (this@Block is Water) }
 101         return this is Water
 102     }
 103
 104     fun isLava(): Boolean {
 105         contract { returns(true) implies (this@Block is Lava) }
 106         return this is Lava
 107     }
 108
 109     fun isSlab(): Boolean {
 110         contract { returns(true) implies (this@Block is Slab) }
 111         return this is Slab
 112     }
 113
 114     fun isNone(): Boolean {
 115         contract { returns(true) implies (this@Block is None) }
 116         return this is None
 117     }
 118
 119     fun getRectangle(x: Int, y: Int): Rectangle {
 120         return Rectangle(
 121             /* x = */ x * 16f + params.collisionMargins.left,
 122             /* y = */ y * 16f + params.collisionMargins.top,
 123             /* width = */ width,
 124             /* height = */ height
 125         )
 126     }
 127
 128     data class None(
 129         override val params: CommonBlockParams
 130     ) : Block()
 131
 132     data class Normal(
 133         override val params: CommonBlockParams,
 134     ) : Block()
 135
 136     data class Slab(
 137         override val params: CommonBlockParams,
 138         val fullBlockKey: String,
 139         val otherPartBlockKey: String,
 140     ): Block()
 141
 142     sealed class Fluid: Block() {
 143         abstract val state: Int
 144     }
 145
 146     data class Water(
 147         override val params: CommonBlockParams,
 148         override val state: Int,
 149     ) : Fluid()
 150
 151     data class Lava(
 152         override val params: CommonBlockParams,
 153         override val state: Int,
 154     ) : Fluid()
 155
 156     /* Legacy accessors below */
 157
 158     // collision margins
 159     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val left: Int get() = params.collisionMargins.left
 160     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val right: Int get() = params.collisionMargins.left
 161     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val top: Int get() = params.collisionMargins.left
 162     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val bottom: Int get() = params.collisionMargins.left
 163
 164     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val hp: Int get() = params.hitPoints
 165     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val collision: Boolean get() = params.hasCollision
 166     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val animated: Boolean get() = params.animationInfo != null
 167     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val frames: Int get() = params.animationInfo?.framesCount ?: 0
 168     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) val drop: String get() = params.dropInfo?.itemKey ?: "none"
 169     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun hasDrop() = params.dropInfo != null
 170     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun toJump() = params.hasCollision && params.collisionMargins.top < 8
 171     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun hasCollision() = params.hasCollision
 172     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun isBackground() = params.isBackground
 173     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun isTransparent() = params.isTransparent
 174     @Deprecated(LEGACY_ACCESSOR_DEPRECATION) fun getTexture() = sprite
 175
 176     companion object {
 177         private const val LEGACY_ACCESSOR_DEPRECATION = "legacy accessors will be removed"
 178         private const val ANIMATION_FRAME_DURATION_MS = 100L
 179     }
 180 }