Add jump mechanic

runvs · Sep 3, 2022 · ae6d233 · ae6d233
1 parent dfb3ec8
commit ae6d233
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Showing 3 changed files with 17 additions and 7 deletions.
diff --git a/impl/gamelib/player.cpp b/impl/gamelib/player.cpp
@@ -24,10 +24,17 @@ void Player::doUpdate(float const elapsed)
 {
 
     auto& input = getGame()->input();
-    if (input.keyboard()->pressed(jt::KeyCode::D)) {
+    if (input.keyboard()->justPressed(jt::KeyCode::D)) {
         getB2Body()->ApplyForceToCenter(b2Vec2 { 100.0f, 0.0f }, true);
-    } else if (input.keyboard()->pressed(jt::KeyCode::A)) {
-        getB2Body()->ApplyForceToCenter(b2Vec2 { -100.0f, 0.0f }, true);
+    }
+
+    m_jumpTimer -= elapsed;
+
+    if (m_jumpTimer <= 0) {
+        if (input.keyboard()->justPressed(jt::KeyCode::W)) {
+            setVelocity(jt::Vector2f { 0.0f, -300.0f });
+            m_jumpTimer = 3.5f;
+        }
     }
 
     m_shape->setPosition(getPosition());

diff --git a/impl/gamelib/player.hpp b/impl/gamelib/player.hpp
@@ -11,6 +11,7 @@ class Player : public jt::Box2DObject {
 private:
     std::shared_ptr<jt::Shape> m_shape;
 
+    float m_jumpTimer = 0.1f;
     void doCreate() override;
     void doUpdate(float const elapsed) override;
     void doDraw() const override;

diff --git a/impl/gamelib/state_game.cpp b/impl/gamelib/state_game.cpp
@@ -12,7 +12,7 @@
 
 void StateGame::doInternalCreate()
 {
-    m_world = std::make_shared<jt::Box2DWorldImpl>(jt::Vector2f { 0.0f, 100.0f });
+    m_world = std::make_shared<jt::Box2DWorldImpl>(jt::Vector2f { 0.0f, 200.0f });
 
     float const w = static_cast<float>(GP::GetWindowSize().x);
     float const h = static_cast<float>(GP::GetWindowSize().y);
@@ -30,9 +30,10 @@ void StateGame::doInternalCreate()
     add(m_platforms);
 
     b2BodyDef def;
-    def.type = b2BodyType::b2_staticBody;
-    auto p = std::make_shared<Platform>(
-        m_world, &def, jt::Vector2f { 300.0f, 200.0f }, jt::Vector2f { GP::GetScreenSize().x, 20 });
+    def.type = b2BodyType::b2_kinematicBody;
+    auto p = std::make_shared<Platform>(m_world, &def,
+        jt::Vector2f { 300.0f, GP::GetScreenSize().y - 50.0f },
+        jt::Vector2f { GP::GetScreenSize().x, 20 });
     add(p);
     m_platforms->push_back(p);
 
@@ -51,6 +52,7 @@ void StateGame::createPlayer()
 {
     b2BodyDef def;
     def.type = b2BodyType::b2_dynamicBody;
+    def.fixedRotation = true;
     m_player = std::make_shared<Player>(m_world, &def);
     add(m_player);
 }