Fix mob physics

[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 7d13744d9260f7cfb86774641ff70e57c0d67930..6b69faada2470f556265259c5df8f5aa6cda74b7 100644 (file)
--- a/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java
+++ b/core/src/ru/deadsoftware/cavedroid/game/GamePhysics.java
@@ -21,6 +21,7 @@ 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;
 
     private final Vector2 gravity = new Vector2(0, 444.44f);
 
@@ -176,6 +177,14 @@ 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));
@@ -197,20 +206,20 @@ public class GamePhysics {
                 player.swim = true;
             }
             if (!player.swim) {
-                if (!player.isFlyMode() && player.getVelocity().y < 270f) {
-                    player.getVelocity().x += gravity.y / 4;
+                if (!player.isFlyMode() && player.getVelocity().y < 32f) {
+                    player.getVelocity().y += gravity.y * delta;
                 }
-                if (!player.isFlyMode() && player.getVelocity().y > 270f) {
-                    player.getVelocity().add(0, -60f);
+                if (!player.isFlyMode() && player.getVelocity().y > 32f) {
+                    player.getVelocity().y -= player.getVelocity().y * 32f * delta;
                 }
             } else {
-                player.getVelocity().add(0, -30f);
-                if (player.getVelocity().y < -180) {
-                    player.getVelocity().y = -180;
+                player.getVelocity().y += PL_JUMP_VELOCITY * delta;
+                if (player.getVelocity().y < -PL_SPEED) {
+                    player.getVelocity().y = -PL_SPEED;
                 }
             }
         } else {
-            if (!player.isFlyMode() && player.getVelocity().y < 1080) {
+            if (!player.isFlyMode() && player.getVelocity().y < PL_TERMINAL_VELOCITY) {
                 player.getVelocity().y += gravity.y * delta;
             }
         }
@@ -231,17 +240,17 @@ public class GamePhysics {
 
     private void mobPhy(Mob mob, float delta) {
         if (mob.getType() == Mob.Type.MOB && GameItems.isFluid(getBlock(mob))) {
-            if (mob.getVelocity().y > 540) {
-                mob.getVelocity().add(0, -5.4f);
+            if (mob.getVelocity().y > 32f) {
+                mob.getVelocity().y -= mob.getVelocity().y * 32f * delta;
             }
 
-            mob.getVelocity().add(0, -30f);
+            mob.getVelocity().y += PL_JUMP_VELOCITY * delta;
 
-            if (mob.getVelocity().y < -180) {
-                mob.getVelocity().y = -180;
+            if (mob.getVelocity().y < -PL_SPEED) {
+                mob.getVelocity().y = -PL_SPEED;
             }
-        } else if (!mob.isFlyMode() && mob.getVelocity().y < 1080) {
-            mob.getVelocity().add(gravity);
+        } else if (!mob.isFlyMode() && mob.getVelocity().y < PL_TERMINAL_VELOCITY) {
+            mob.getVelocity().y += gravity.y * delta;
         }
 
         mob.y += mob.getVelocity().y * delta;
@@ -255,7 +264,7 @@ public class GamePhysics {
         mobXColl(mob);
 
         if (mob.canJump() && mob.getVelocity().x != 0 && checkJump(mob)) {
-            mob.getVelocity().add(0, -480);
+            mob.getVelocity().y = PL_JUMP_VELOCITY;
             mob.setCanJump(false);
         }
     }