feat: decal player

1 files changed, 71 insertions, 0 deletions

diff --git a/core/src/com/ilotterytea/maxoning/player/DecalPlayer.java b/core/src/com/ilotterytea/maxoning/player/DecalPlayer.java
new file mode 100644
index 0000000..30ee447
--- /dev/null
+++ b/core/src/com/ilotterytea/maxoning/player/DecalPlayer.java
@@ -0,0 +1,71 @@
+package com.ilotterytea.maxoning.player;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.graphics.Camera;
+import com.badlogic.gdx.graphics.g2d.TextureRegion;
+import com.badlogic.gdx.graphics.g3d.decals.Decal;
+import com.badlogic.gdx.math.Intersector;
+import com.badlogic.gdx.math.Vector3;
+import com.badlogic.gdx.math.collision.BoundingBox;
+import com.badlogic.gdx.math.collision.Ray;
+
+public class DecalPlayer {
+    private final TextureRegion[] regions;
+    private int regionIndex;
+    private final Decal decal;
+    private final BoundingBox box;
+
+    public DecalPlayer(TextureRegion[] regions) {
+        this.regions = regions;
+        this.regionIndex = 0;
+
+        this.decal = Decal.newDecal(this.regions[this.regionIndex]);
+        this.decal.setScale(0.025f);
+        this.decal.setPosition(-4.0f, 1.75f, -4.0f);
+
+        float width = this.decal.getWidth() / (this.decal.getScaleX() * 1000f);
+        float height = this.decal.getHeight() / (this.decal.getScaleY() * 1000f);
+
+        Vector3 position = this.decal.getPosition();
+        Vector3 minBox = new Vector3(position.x - width / 3, position.y - height / 3, position.z - width / 3);
+        Vector3 maxBox = new Vector3(position.x + width / 3, position.y + height / 3, position.z + width / 3);
+
+        this.box = new BoundingBox(minBox, maxBox);
+    }
+
+    public void render(Camera camera) {
+        checkCollisions(camera);
+    }
+
+    private void checkCollisions(Camera camera) {
+        Ray ray = null;
+
+        if (Gdx.input.justTouched()) {
+            ray = camera.getPickRay(Gdx.input.getX(), Gdx.input.getY());
+        }
+
+        if (ray == null) {
+            return;
+        }
+
+        Vector3 intersection = new Vector3();
+
+        if (Intersector.intersectRayBounds(ray, box, intersection)) {
+            updateTextureRegion();
+        }
+    }
+
+    private void updateTextureRegion() {
+        this.regionIndex++;
+
+        if (this.regions[this.regionIndex] == null) {
+            this.regionIndex = 0;
+        }
+
+        this.decal.setTextureRegion(this.regions[this.regionIndex]);
+    }
+
+    public Decal getDecal() {
+        return this.decal;
+    }
+}