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// Mines is free software: you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
// Mines is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along with
// Mines. If not, see <https://www.gnu.org/licenses/>.
package space.jakob.mines
import android.support.v7.app.AppCompatActivity
import android.support.v4.view.GestureDetectorCompat
import android.os.Bundle
import android.view.GestureDetector
import android.view.ScaleGestureDetector
import android.view.MotionEvent
import android.util.Log
class GameActivity : AppCompatActivity() {
lateinit var gameView: GameView
lateinit var gestureDetector: GestureDetectorCompat
lateinit var scaleGestureDetector: ScaleGestureDetector
// Implements the callbacks for gestureDetector.
val gestureListener = object : GestureDetector.SimpleOnGestureListener() {
override fun onDown(e: MotionEvent): Boolean {
with (gameView) {
grid?.let {
val (x, y) = toGridCoordinates(e.x.toInt(), e.y.toInt())
it.reveal(x, y)
invalidate()
}
}
return false
}
override fun onScroll(e1: MotionEvent, e2: MotionEvent, dx: Float, dy: Float): Boolean {
with (gameView) {
cameraX = (cameraX + dx / 100.0).coerceIn(0.0, gameView.maxCameraX)
cameraY = (cameraY + dy / 100.0).coerceIn(0.0, gameView.maxCameraY)
invalidate()
}
return false
}
}
// Implements the callbacks for scaleGestureDetector.
val scaleListener = object : ScaleGestureDetector.SimpleOnScaleGestureListener() {
override fun onScale(scaleGestureDetector: ScaleGestureDetector) : Boolean {
with (gameView) {
grid?.let {
val factor = scaleGestureDetector.getScaleFactor()
var currentDistance = sightX - cameraX
var desiredDistance = currentDistance / factor
var deltaDistance = Math.abs(desiredDistance - currentDistance) / 2
if (factor < 1.0) {
cameraX = (cameraX - deltaDistance).coerceAtLeast(0.0)
sightX = (sightX + deltaDistance).coerceAtMost(it.width.toDouble() - cameraX)
} else {
cameraX = cameraX + deltaDistance
sightX = sightX - deltaDistance
}
currentDistance = sightY - cameraY
desiredDistance = currentDistance / factor
deltaDistance = Math.abs(desiredDistance - currentDistance) / 2
if (factor < 1.0) {
cameraY = (cameraY - deltaDistance).coerceAtLeast(0.0)
sightY = (sightY + deltaDistance).coerceAtMost(it.height.toDouble() - cameraY)
} else {
cameraY = cameraY + deltaDistance
sightY = sightY - deltaDistance
}
}
}
return false
}
}
override fun onTouchEvent(event: MotionEvent): Boolean {
return gestureDetector.onTouchEvent(event)
|| scaleGestureDetector.onTouchEvent(event)
|| super.onTouchEvent(event)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_game)
var width = 8
var height = 8
var mines = 10
getIntent()?.let {
width = it.getIntExtra("WIDTH", width)
height = it.getIntExtra("HEIGHT", height)
mines = it.getIntExtra("MINES", mines)
}
gameView = findViewById(R.id.view) as GameView
gameView.grid = Grid(width, height, mines)
gestureDetector = GestureDetectorCompat(this, gestureListener)
scaleGestureDetector = ScaleGestureDetector(this, scaleListener)
}
}
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