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55 lines
1.6 KiB
55 lines
1.6 KiB
4 years ago
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package org.jetbrains.compose.demo.falling
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import androidx.compose.foundation.background
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import androidx.compose.foundation.clickable
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.offset
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import androidx.compose.foundation.layout.size
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import androidx.compose.foundation.shape.CircleShape
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.mutableStateOf
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import androidx.compose.runtime.setValue
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.draw.clip
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import androidx.compose.ui.draw.shadow
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import androidx.compose.ui.graphics.Color
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import androidx.compose.ui.unit.dp
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@Composable
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fun Piece(index: Int, piece: PieceData) {
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val boxSize = 40.dp
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Box(
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Modifier
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.offset(boxSize * index * 5 / 3, piece.position.dp)
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.shadow(30.dp)
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.clip(CircleShape)
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) {
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Box(
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Modifier
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.size(boxSize, boxSize)
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.background(if (piece.clicked) Color.Gray else piece.color)
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.clickable(onClick = { piece.click() })
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)
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}
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}
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data class PieceData(val game: Game, val velocity: Float, val color: Color) {
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var clicked by mutableStateOf(false)
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var position by mutableStateOf(0f)
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fun update(dt: Long) {
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if (clicked) return
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val delta = (dt / 1E8 * velocity).toFloat()
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position = if (position < game.size.height) position + delta else 0f
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}
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fun click() {
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if (!clicked && !game.paused) {
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clicked = true
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game.clicked(this)
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}
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}
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}
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