From bd34492244c2d177fd8f080e1db78816a828441e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Zurcher?= <jeremy@asynk.ch>
Date: Sat, 13 Sep 2014 23:51:31 +0200
Subject: add actors/HexMap
---
core/src/ch/asynk/tankontank/actors/HexMap.java | 79 +++++++++++++++++++++++++
1 file changed, 79 insertions(+)
create mode 100644 core/src/ch/asynk/tankontank/actors/HexMap.java
diff --git a/core/src/ch/asynk/tankontank/actors/HexMap.java b/core/src/ch/asynk/tankontank/actors/HexMap.java
new file mode 100644
index 0000000..559aeef
--- /dev/null
+++ b/core/src/ch/asynk/tankontank/actors/HexMap.java
@@ -0,0 +1,79 @@
+package ch.asynk.tankontank.actors;
+
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.scenes.scene2d.ui.Image;
+
+import com.badlogic.gdx.math.Vector2;
+
+public class HexMap extends Image
+{
+ static final int x0 = 83; // map offset
+ static final int y0 = 182; // map offset
+ static final int h = 110; // hex side
+ static final float dh = 53.6f; // hex top should be h/2
+ static final int w = 189; // hex width
+ static final int dw = 94; // half hex should be w/2
+ static final float H = h + dh; // total height
+ static final float slope = (dh / (float) dw);
+
+ private int cols;
+ private int rows;
+ public Vector2 cell = new Vector2();
+
+ public HexMap(int cols, int rows, Texture texture)
+ {
+ super(texture);
+ this.cols = cols;
+ this.rows = rows;
+ }
+
+ public void selectCell(float cx, float cy)
+ {
+ // compute row
+ int row;
+ boolean oddRow = true;
+ float y = (cy - y0);
+ if (y < 0.f) {
+ row = -1;
+ } else {
+ row = (int) (y / H);
+ oddRow = ((row % 2) == 1);
+ }
+
+ // compute col
+ int col;
+ float x = (cx - x0);
+ if (oddRow) x -= dw;
+ if (x < 0.f) {
+ col = -1;
+ } else {
+ col = (int) (x / w);
+ }
+
+ // check upper boundaries
+ float dy = (y - (row * H));
+ if (dy > h) {
+ dy -= h;
+ float dx = (x - (col * w));
+ if (dx < dw) {
+ if ((dx * slope) < dy) {
+ row += 1;
+ if (!oddRow) col -= 1;
+ oddRow = !oddRow;
+ }
+ } else {
+ if (((w - dx) * slope) < dy) {
+ row += 1;
+ if (oddRow) col += 1;
+ oddRow = !oddRow;
+ }
+ }
+ }
+
+ // validate cell
+ if ((col < 0) || (row < 0) || (row > rows) || (col > cols) || (oddRow && ((col +1)> cols)))
+ cell.set(-1, -1);
+ else
+ cell.set(col, row);
+ }
+}
--
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