From 2cc92d9014d433bdf12e09ccca64aefbbca93331 Mon Sep 17 00:00:00 2001
From: Jonathan Hager <jonathan.hager@protonmail.com>
Date: Fri, 25 Sep 2020 21:14:29 +0200
Subject: [PATCH] lots and lots of changes lol

---
 core/src/com/trs/game/StaticMath.java       | 36 ++++++++++++++++++
 core/src/com/trs/game/model/Monster.java    | 41 +++++++++++++++++++++
 core/src/com/trs/game/model/Projectile.java | 29 +++++++++++++++
 3 files changed, 106 insertions(+)

diff --git a/core/src/com/trs/game/StaticMath.java b/core/src/com/trs/game/StaticMath.java
index 7f595f0..fd86503 100644
--- a/core/src/com/trs/game/StaticMath.java
+++ b/core/src/com/trs/game/StaticMath.java
@@ -1,4 +1,40 @@
 package com.trs.game;
 
 public class StaticMath {
+    public static double calculateAngle(int xPos1, int yPos1, int xPos2, int yPos2){
+        float deltaX = xPos2 - xPos1;
+        float deltaY = yPos2 - yPos1;
+
+        double angle;
+        if(deltaY == 0){
+            if(deltaX < 0){
+                angle = Math.PI;
+            }
+            else{
+                angle = 0;
+            }
+        }
+        else if(deltaX == 0 && deltaY >= 0){
+            angle = Math.PI / 2;
+        }
+        else if(deltaX == 0 && deltaY < 0){
+            angle = Math.PI / -2;
+        }
+        else{
+            angle = Math.abs(Math.atan(deltaY / deltaX));
+
+            if(deltaX < 0 && deltaY < 0){
+                angle = Math.PI + angle;
+            }
+            else if(deltaX < 0 && deltaY > 0){
+                angle = Math.PI - angle;
+            }
+            else if(deltaX > 0 && deltaY < 0){
+                angle = 2*Math.PI - angle;
+            }
+        }
+
+        return angle;
+    }
+
 }
diff --git a/core/src/com/trs/game/model/Monster.java b/core/src/com/trs/game/model/Monster.java
index 3fa806c..af9a2db 100644
--- a/core/src/com/trs/game/model/Monster.java
+++ b/core/src/com/trs/game/model/Monster.java
@@ -1,4 +1,45 @@
 package com.trs.game.model;
 
+import com.trs.game.StaticMath;
+
 public class Monster {
+
+    private final int SPEED = 3;
+
+    private int xPos;
+    private int yPos;
+    private double movementX;
+    private double movementY;
+    private int xPosTarget;
+    private int yPosTarget;
+
+    public Monster(int xPos, int yPos){
+        this.xPos = xPos;
+        this.yPos = yPos;
+    }
+
+    public void move(){
+        this.xPos += this.movementX;
+        this.yPos += this.movementY;
+    }
+
+    private void checkTarget(){
+        if(this.xPos == this.xPosTarget && this.yPos == this.yPosTarget){
+            this.generateNewTarget();
+        }
+    }
+
+    private void generateNewTarget(){
+        // TODO: generate new target coordinates
+
+        calculateMovement();
+    }
+
+    private void calculateMovement(){
+        double angle = StaticMath.calculateAngle(this.xPos, this.yPos, this.xPosTarget, this.yPosTarget);
+
+        movementX = Math.cos(angle) * SPEED;
+        movementY = Math.sin(angle) * SPEED;
+    }
+
 }
diff --git a/core/src/com/trs/game/model/Projectile.java b/core/src/com/trs/game/model/Projectile.java
index 477d359..89f2ebe 100644
--- a/core/src/com/trs/game/model/Projectile.java
+++ b/core/src/com/trs/game/model/Projectile.java
@@ -1,4 +1,33 @@
 package com.trs.game.model;
 
+import com.trs.game.StaticMath;
+
 public class Projectile {
+
+    private final int SPEED = 3;
+
+    private int xPos;
+    private int yPos;
+    private double movementX;
+    private double movementY;
+
+    public Projectile(int xPos, int yPos, int xPosMonster, int yPosMonster){
+        this.xPos = xPos;
+        this.yPos = yPos;
+
+        // calculating values for movementX and movementY
+        double angle = StaticMath.calculateAngle(this.xPos, this.yPos, xPosMonster, yPosMonster);
+
+        movementX = Math.cos(angle) * SPEED;
+        movementY = Math.sin(angle) * SPEED;
+    }
+
+    public void collision(){
+
+    }
+
+    public void move(){
+        this.xPos += this.movementX;
+        this.yPos += this.movementY;
+    }
 }