Adding basic basic basic AI

assets/games/rose/prefabs/Crab.xml

@@ -5,6 +5,7 @@
   <CharacterController2D />
   <BoxCollider />
   <EntityHealth />
+  <EntityMove walkSpeed="30" />
   <EntityRandomWalk />
 
   <child position="0, 0, -0.6">

assets/games/rose/prefabs/Player.xml

@@ -5,6 +5,7 @@
   <CharacterController2D />
   <BoxCollider />
   <EntityHealth />
+  <EntityMove moveSpeed="60" />
   <PlayerController ref="player" />
 
   <child position="0, 0, -0.7">

assets/games/rose/prefabs/Urchin.xml

@@ -6,4 +6,6 @@
   <BoxCollider />
   <EntityHealth />
   <HurtHazard />
+  <EntityMove moveSpeed="20" />
+  <EntityChargePlayer />
 </prefab>

src/dawn/util/random.hpp

@@ -4,7 +4,8 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "mathutils.hpp"
+#include "dawnlibs.hpp"
+#include "util/mathutils.hpp"
 
 namespace Dawn {
   /**

src/dawnrose/scene/components/CMakeLists.txt

@@ -8,7 +8,8 @@ target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     GameCamera.cpp
     PlayerController.cpp
-    EntityHealth.cpp
     HurtHazard.cpp
-    EntityRandomWalk.cpp
-)
+)
+
+# Subdirs
+add_subdirectory(entity)

src/dawnrose/scene/components/PlayerController.cpp

@@ -15,32 +15,22 @@ PlayerController::PlayerController(SceneItem *item) : SceneItemComponent(item) {
 std::vector<SceneItemComponent*> PlayerController::getDependencies() {
   return {
     (this->characterController = item->getComponent<CharacterController2D>()),
-    (this->entityHealth = item->getComponent<EntityHealth>())
+    (this->entityHealth = item->getComponent<EntityHealth>()),
+    (this->entityMove = item->getComponent<EntityMove>())
   };
 }
 
 void PlayerController::onStart() {
   assertNotNull(this->characterController);
+  assertNotNull(this->entityMove);
   assertNotNull(this->entityHealth);
 
   useEvent([&](float_t delta){
-    // Don't move if stunned.
-    if(entityHealth->isStunned()) return;
-
     // Movement
-    auto inputMove = getGame()->inputManager.getAxis2D(
+    this->entityMove->direction = getGame()->inputManager.getAxis2D(
       INPUT_BIND_NEGATIVE_X, INPUT_BIND_POSITIVE_X,
       INPUT_BIND_NEGATIVE_Y, INPUT_BIND_POSITIVE_Y
     );
-    
-    if(inputMove.x != 0 || inputMove.y != 0) {
-      float_t angle = atan2(inputMove.y, inputMove.x);
-      glm::vec2 movement(cos(angle), sin(angle));
-
-      transform->setLocalRotation(glm::quat(glm::vec3(0, -angle + 1.5708f, 0)));
-
-      characterController->velocity += movement * delta * moveSpeed;
-    }
   }, getScene()->eventSceneUpdate);
 
   // Hurt Hazard Processing

src/dawnrose/scene/components/PlayerController.hpp

@@ -6,17 +6,17 @@
 #pragma once
 #include "scene/components/physics/2d/CharacterController2D.hpp"
 #include "scene/components/HurtHazard.hpp" 
-#include "scene/components/EntityHealth.hpp"
+#include "scene/components/entity/EntityHealth.hpp"
+#include "scene/components/entity/EntityMove.hpp"
 
 namespace Dawn {
   class PlayerController : public SceneItemComponent {
     protected:
       CharacterController2D *characterController;
       EntityHealth *entityHealth;
+      EntityMove *entityMove;
 
     public:
-      // @optional
-      float_t moveSpeed = 60.0f;
       // @optional
       float_t hitKnockback = 20.0f;
 

src/dawnrose/scene/components/entity/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    EntityChargePlayer.cpp
+    EntityHealth.cpp
+    EntityRandomWalk.cpp
+    EntityMove.cpp
+)

src/dawnrose/scene/components/entity/EntityChargePlayer.cpp

@@ -0,0 +1,47 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "EntityChargePlayer.hpp"
+
+using namespace Dawn;
+
+EntityChargePlayer::EntityChargePlayer(SceneItem* item) : SceneItemComponent(item) {
+  
+}
+
+std::vector<SceneItemComponent*> EntityChargePlayer::getDependencies() {
+  return {
+    (characterController = item->getComponent<CharacterController2D>())
+  };
+}
+
+void EntityChargePlayer::onStart() {
+  assertNotNull(characterController);
+
+  useEvent([&](float_t delta) {
+    // Get the direction to move in
+    PlayerController * player = getScene()->findComponent<PlayerController>();
+    if(player == nullptr) return;
+    
+    // Get the direction to move in
+    glm::vec2 pos = glm::vec2(
+      player->transform->getLocalPosition().x,
+      player->transform->getLocalPosition().z
+    ) - glm::vec2(
+      transform->getLocalPosition().x,
+      transform->getLocalPosition().z
+    );
+
+    // Conver to an angle and then convert back into a 2D vector. This mimics a
+    // user essentially "moving the analogue stick in this direction"
+    
+    if(mathAbs(pos.x) > 1.0f || mathAbs(pos.y) > 1.0f) {
+      float_t angle = atan2(pos.y, pos.x);
+      glm::vec2 movement(cos(angle), sin(angle));
+      transform->setLocalRotation(glm::quat(glm::vec3(0, -angle + 1.5708f, 0)));
+      characterController->velocity += movement * delta * moveSpeed;
+    }
+  }, getScene()->eventSceneUpdate);
+}

src/dawnrose/scene/components/entity/EntityChargePlayer.hpp

@@ -0,0 +1,24 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/SceneItemComponent.hpp"
+#include "scene/components/physics/2d/CharacterController2D.hpp"
+#include "scene/components/PlayerController.hpp"
+
+namespace Dawn {
+  class EntityChargePlayer : public SceneItemComponent {
+    protected:
+      CharacterController2D *characterController = nullptr;
+
+    public:
+      // @optional
+      float_t moveSpeed = 30.0f;
+
+      EntityChargePlayer(SceneItem* item);
+      std::vector<SceneItemComponent*> getDependencies() override;
+      void onStart() override;
+  };
+}

src/dawnrose/scene/components/entity/EntityMove.cpp

@@ -0,0 +1,38 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "EntityMove.hpp"
+
+using namespace Dawn;
+
+EntityMove::EntityMove(SceneItem* item) : SceneItemComponent(item) {
+  
+}
+
+std::vector<SceneItemComponent*> EntityMove::getDependencies() {
+  return {
+    (characterController = item->getComponent<CharacterController2D>()),
+    (this->entityHealth = item->getComponent<EntityHealth>())
+  };
+}
+
+void EntityMove::onStart() {
+  assertNotNull(this->characterController);
+  assertNotNull(this->entityHealth);
+
+  useEvent([&](float_t delta) {
+    // Don't move if stunned.
+    if(entityHealth->isStunned()) return;
+
+    // Don't move if no move.
+    if(direction.x == 0 && direction.y == 0) return;
+    
+    // Move
+    float_t angle = atan2(direction.y, direction.x);
+    glm::vec2 movement(cos(angle), sin(angle));
+    transform->setLocalRotation(glm::quat(glm::vec3(0, -angle + 1.5708f, 0)));
+    characterController->velocity += movement * delta * moveSpeed;
+  }, getScene()->eventSceneUpdate);
+}

src/dawnrose/scene/components/entity/EntityMove.hpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/SceneItemComponent.hpp"
+#include "scene/components/physics/2d/CharacterController2D.hpp"
+#include "scene/components/entity/EntityHealth.hpp"
+
+namespace Dawn {
+  class EntityMove : public SceneItemComponent {
+    protected:
+      CharacterController2D *characterController = nullptr;
+      EntityHealth *entityHealth = nullptr;
+      
+    public:
+      // @optional
+      float_t moveSpeed = 30.0f;
+      // @optional
+      glm::vec2 direction = glm::vec2(0, 0);
+
+      EntityMove(SceneItem* item);
+      std::vector<SceneItemComponent*> getDependencies() override;
+      void onStart() override;
+  };
+}

src/dawnrose/scene/components/entity/EntityRandomWalk.cpp

@@ -13,7 +13,8 @@ EntityRandomWalk::EntityRandomWalk(SceneItem* item) : SceneItemComponent(item) {
 
 std::vector<SceneItemComponent*> EntityRandomWalk::getDependencies() {
   return {
-    (characterController = item->getComponent<CharacterController2D>())
+    (characterController = item->getComponent<CharacterController2D>()),
+    (this->entityMove = item->getComponent<EntityMove>())
   };
 }
 
@@ -34,20 +35,14 @@ void EntityRandomWalk::onStart() {
     }
 
     // Get the direction to move in
-    glm::vec2 pos = destination - glm::vec2(
+    glm::vec2 diff = destination - glm::vec2(
       transform->getLocalPosition().x,
       transform->getLocalPosition().z
     );
-
-    // Conver to an angle and then convert back into a 2D vector. This mimics a
-    // user essentially "moving the analogue stick in this direction"
-    
-    if(mathAbs(pos.x) > 1.0f || mathAbs(pos.y) > 1.0f) {
-      float_t angle = atan2(pos.y, pos.x);
-      glm::vec2 movement(cos(angle), sin(angle));
-      transform->setLocalRotation(glm::quat(glm::vec3(0, -angle + 1.5708f, 0)));
-      characterController->velocity += movement * delta * moveSpeed;
+    if(glm::distance(glm::vec2(), diff) <= 1.0f) {
+      this->entityMove->direction = glm::vec2(0, 0);
+    } else {
+      this->entityMove->direction = diff;
     }
-    
   }, getScene()->eventSceneUpdate);
 }

src/dawnrose/scene/components/entity/EntityRandomWalk.hpp

@@ -4,21 +4,20 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "scene/SceneItemComponent.hpp"
 #include "util/random.hpp"
 #include "scene/components/physics/2d/CharacterController2D.hpp"
+#include "scene/components/entity/EntityMove.hpp"
 
 namespace Dawn {
   class EntityRandomWalk : public SceneItemComponent {
     protected:
       CharacterController2D *characterController = nullptr;
+      EntityMove *entityMove = nullptr;
 
     public:
       // @optional
       float_t timeLeftUntilNextDecision = 0.0f;
       // @optional
-      float_t moveSpeed = 30.0f;
-      // @optional
       glm::vec2 destination = glm::vec2(0, 0);
       // @optional
       glm::vec2 walkRange = glm::vec2(12.0f, 12.0f);