Add player health

[cavedroid.git] / core / src / ru / deadsoftware / cavedroid / game / GamePhysics.java

diff --git a/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java b/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java
index 6b69faada2470f556265259c5df8f5aa6cda74b7..4127b6dba4ee9fbb6af1b90d3c47390591467d9f 100644 (file)
--- a/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java
+++ b/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java
@@ -12,6 +12,7 @@ import ru.deadsoftware.cavedroid.game.objects.Drop;
 import ru.deadsoftware.cavedroid.game.objects.DropController;
 import ru.deadsoftware.cavedroid.game.world.GameWorld;
 
+import javax.annotation.CheckForNull;
 import javax.inject.Inject;
 import java.util.Iterator;
 
@@ -19,7 +20,6 @@ import java.util.Iterator;
 @GameScope
 public class GamePhysics {
 
-    public static final float PL_SPEED = 69.072f;
     public static final float PL_JUMP_VELOCITY = -133.332f;
     public static final float PL_TERMINAL_VELOCITY = 1254.4f;
 
@@ -94,31 +94,72 @@ public class GamePhysics {
                 (int) (rect.y + rect.height / 8 * 7) / 16);
     }
 
+    private Rectangle getShiftedPlayerRect(float shift) {
+        final Player player = mMobsController.getPlayer();
+        return new Rectangle(player.x + shift, player.y, player.width, player.height);
+    }
+
+    /**
+     * @return Rectangle representing magneting target for this drop
+     */
+    @CheckForNull
+    private Rectangle getShiftedMagnetingPlayerRect(Drop drop) {
+        final Player player = mMobsController.getPlayer();
+
+        if (drop.canMagnetTo(player)) {
+            return getShiftedPlayerRect(0);
+        }
+
+        final Rectangle shiftedLeft = getShiftedPlayerRect(-mGameWorld.getWidthPx());
+        if (drop.canMagnetTo(shiftedLeft)) {
+            return shiftedLeft;
+        }
+
+        final Rectangle shiftedRight = getShiftedPlayerRect(mGameWorld.getWidthPx());
+        if (drop.canMagnetTo(shiftedRight)) {
+            return shiftedRight;
+        }
+
+        return null;
+    }
+
+    private void pickUpDropIfPossible(Rectangle shiftedPlayerTarget, Drop drop) {
+        final Player player = mMobsController.getPlayer();
+
+        if (Intersector.overlaps(shiftedPlayerTarget, drop)) {
+            player.pickUpDrop(drop);
+        }
+    }
+
     private void dropPhy(Drop drop, float delta) {
-        int dropToPlayer = drop.closeToPlayer(mGameWorld, mMobsController.getPlayer());
-        if (dropToPlayer > 0) {
-            drop.moveToPlayer(mGameWorld, mMobsController.getPlayer(), dropToPlayer);
+        final Rectangle playerMagnetTarget = getShiftedMagnetingPlayerRect(drop);
+        final Vector2 dropVelocity = drop.getVelocity();
+
+
+        if (playerMagnetTarget != null) {
+            final Vector2 magnetVector = new Vector2(playerMagnetTarget.x - drop.x,
+                    playerMagnetTarget.y - drop.y);
+            magnetVector.nor().scl(Drop.MAGNET_VELOCITY * delta);
+            dropVelocity.add(magnetVector);
         } else {
-            if (drop.getVelocity().x >= .5f) {
-                drop.getVelocity().x -= .5f;
-            } else if (drop.getVelocity().x <= -.5f) {
-                drop.getVelocity().x += .5f;
-            } else {
-                drop.getVelocity().x = 0;
-            }
-            if (drop.getVelocity().y < 9) {
-                drop.getVelocity().y += gravity.y / 4;
-            }
+            dropVelocity.y += gravity.y * delta;
         }
-        drop.move(delta);
 
+        dropVelocity.x = MathUtils.clamp(dropVelocity.x, -Drop.MAGNET_VELOCITY, Drop.MAGNET_VELOCITY);
+        dropVelocity.y = MathUtils.clamp(dropVelocity.y, -Drop.MAGNET_VELOCITY, Drop.MAGNET_VELOCITY);
+
+        drop.x += dropVelocity.x * delta;
+        drop.y += dropVelocity.y * delta;
 
         if (checkColl(drop)) {
-            drop.getVelocity().set(0, -1);
+            dropVelocity.setZero();
             do {
-                drop.move(delta);
+                drop.y--;
             } while (checkColl(drop));
-            drop.getVelocity().setZero();
+        }
+
+        if (playerMagnetTarget != null) {
+            pickUpDropIfPossible(playerMagnetTarget, drop);
         }
     }
 
@@ -167,6 +208,11 @@ public class GamePhysics {
             if (d == -1) {
                 mob.setCanJump(true);
                 mob.setFlyMode(false);
+
+                int dmg = ((int)Math.max(0f, (((mob.getVelocity().y * mob.getVelocity().y) / (2 * gravity.y)) - 48f) / 16f));
+                if (dmg > 0) {
+                    mob.damage(dmg);
+                }
             }
 
             mob.y = MathUtils.round(mob.getY());
@@ -177,14 +223,6 @@ public class GamePhysics {
 
             mob.getVelocity().y = 0;
 
-
-
-            //todo fall damage
-            // h = (v^2) / 2g
-            // dmg = max(0, (h - 48) / 32) - half of blocks fallen starting from 3 blocks height
-            //                int dmg = ((int)Math.max(0f, (((mob.getVelocity().y * mob.getVelocity().y) / (2 * gravity.y)) - 48f) / 16f));
-            //                if (dmg > 0) System.out.println("Damage: " + dmg);
-
         } else {
             mob.y += 1;
             mob.setCanJump(checkColl(mob));
@@ -214,8 +252,8 @@ public class GamePhysics {
                 }
             } else {
                 player.getVelocity().y += PL_JUMP_VELOCITY * delta;
-                if (player.getVelocity().y < -PL_SPEED) {
-                    player.getVelocity().y = -PL_SPEED;
+                if (player.getVelocity().y < -player.getSpeed()) {
+                    player.getVelocity().y = -player.getSpeed();
                 }
             }
         } else {
@@ -233,7 +271,7 @@ public class GamePhysics {
         mobXColl(player);
 
         if (mMainConfig.isTouch() && !player.isFlyMode() && player.canJump() && player.getVelocity().x != 0 && checkJump(player)) {
-            player.getVelocity().y = PL_JUMP_VELOCITY;
+            player.jump();
             player.setCanJump(false);
         }
     }
@@ -246,8 +284,8 @@ public class GamePhysics {
 
             mob.getVelocity().y += PL_JUMP_VELOCITY * delta;
 
-            if (mob.getVelocity().y < -PL_SPEED) {
-                mob.getVelocity().y = -PL_SPEED;
+            if (mob.getVelocity().y < -mob.getSpeed()) {
+                mob.getVelocity().y = -mob.getSpeed();
             }
         } else if (!mob.isFlyMode() && mob.getVelocity().y < PL_TERMINAL_VELOCITY) {
             mob.getVelocity().y += gravity.y * delta;
@@ -264,7 +302,7 @@ public class GamePhysics {
         mobXColl(mob);
 
         if (mob.canJump() && mob.getVelocity().x != 0 && checkJump(mob)) {
-            mob.getVelocity().y = PL_JUMP_VELOCITY;
+            mob.jump();
             mob.setCanJump(false);
         }
     }
@@ -275,10 +313,7 @@ public class GamePhysics {
         for (Iterator<Drop> it = mDropController.getIterator(); it.hasNext(); ) {
             Drop drop = it.next();
             dropPhy(drop, delta);
-            if (Intersector.overlaps(drop, player)) {
-                drop.pickUpDrop(player);
-            }
-            if (drop.isPickedUp()) {
+            if (drop.getPickedUp()) {
                 it.remove();
             }
         }