UUpdate Tutorials

tanks_script/Sources/lnx/FireTrait.hx

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+package lnx;
+
+import leenkx.trait.physics.RigidBody;
+import iron.object.Object;
+
+class FireTrait extends iron.Trait {
+    public function new() {
+        super();
+    }
+
+    public function fire() {
+        iron.Scene.active.spawnObject("Bullet", null, function(o:Object) {
+            o.visible = true;
+            object.transform.buildMatrix();
+            o.transform.loc.setFrom(object.transform.world.getLoc());
+		    o.transform.buildMatrix();
+
+            var rigidBody = o.getTrait(RigidBody);
+            if (rigidBody != null) rigidBody.syncTransform();
+
+            var vec = object.transform.look();
+            vec.mult(7);
+            rigidBody.applyImpulse(vec);
+
+            iron.system.Tween.timer(2, o.remove);
+        });
+    }
+}

tanks_script/Sources/lnx/Player1Controls.hx

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+package lnx;
+
+class Player1Controls extends iron.Trait {
+
+    public function new() {
+        super();
+        
+        notifyOnUpdate(function() {
+            var keyboard = iron.system.Input.getKeyboard();
+            var gamepad = iron.system.Input.getGamepad(0);
+            var tank = object.getTrait(TankTrait);
+
+            if (keyboard.down("left") || gamepad.down("left") > 0.0) {
+                tank.turnLeft();
+            }
+
+            if (keyboard.down("right") || gamepad.down("right") > 0.0) {
+                tank.turnRight();
+            }
+
+            if (keyboard.down("up") || gamepad.down("up") > 0.0) {
+                tank.forward();
+            }
+
+            if (keyboard.down("down") || gamepad.down("down") > 0.0) {
+                tank.backward();
+            }
+        });
+    }
+}

tanks_script/Sources/lnx/Player1Fire.hx

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+package lnx;
+
+class Player1Fire extends iron.Trait {
+    public function new() {
+        super();
+        
+        notifyOnUpdate(function() {
+            var keyboard = iron.system.Input.getKeyboard();
+            var gamepad = iron.system.Input.getGamepad(0);
+
+            if (keyboard.started("space") || gamepad.started("cross")) {
+                object.getTrait(FireTrait).fire();
+            }
+        });
+    }
+}

tanks_script/Sources/lnx/Player2Controls.hx

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+package lnx;
+
+class Player2Controls extends iron.Trait {
+    public function new() {
+        super();
+        
+        notifyOnUpdate(function() {
+            var keyboard = iron.system.Input.getKeyboard();
+            var gamepad = iron.system.Input.getGamepad(1);
+            var tank = object.getTrait(TankTrait);
+
+            if (keyboard.down("a") || gamepad.down("left") > 0.0) {
+                tank.turnLeft();
+            }
+
+            if (keyboard.down("d") || gamepad.down("right") > 0.0) {
+                tank.turnRight();
+            }
+
+            if (keyboard.down("w") || gamepad.down("up") > 0.0) {
+                tank.forward();
+            }
+
+            if (keyboard.down("s") || gamepad.down("down") > 0.0) {
+                tank.backward();
+            }
+        });
+    }
+}

tanks_script/Sources/lnx/Player2Fire.hx

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+package lnx;
+
+class Player2Fire extends iron.Trait {
+    public function new() {
+        super();
+        
+        notifyOnUpdate(function() {
+            var keyboard = iron.system.Input.getKeyboard();
+            var gamepad = iron.system.Input.getGamepad(1);
+
+            if (keyboard.started("f") || gamepad.started("cross")) {
+                object.getTrait(FireTrait).fire();
+            }
+        });
+    }
+}

tanks_script/Sources/lnx/TankTrait.hx

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+package lnx;
+
+import leenkx.trait.physics.RigidBody;
+
+class TankTrait extends iron.Trait {
+
+    static var q = new iron.math.Quat();
+    var transform:iron.object.Transform;
+
+    public function new() {
+        super();
+
+        notifyOnInit(function() {
+            transform = object.transform;
+        });
+    }
+
+    public function turnLeft() {
+        q.fromEuler(0, 0, 0.03);
+		transform.rot.mult(q);
+		transform.buildMatrix();
+		syncRigidBody();
+    }
+
+    public function turnRight() {
+        q.fromEuler(0, 0, -0.03);
+		transform.rot.mult(q);
+		transform.buildMatrix();
+		syncRigidBody();
+    }
+
+    public function forward() {
+        var vec = transform.look();
+        vec.mult(0.05);
+        transform.loc.add(vec);
+		transform.buildMatrix();
+        syncRigidBody();
+    }
+
+    public function backward() {
+        var vec = transform.look();
+        vec.mult(-0.05);
+        transform.loc.add(vec);
+		transform.buildMatrix();
+        syncRigidBody();
+    }
+
+    function syncRigidBody() {
+		var rigidBody = object.getTrait(RigidBody);
+		if (rigidBody != null) rigidBody.syncTransform();
+    }
+}