#13 add trigger & dartgun controller

src/trigger.h

@@ -0,0 +1,83 @@
+#ifndef H_TRIGGER
+#define H_TRIGGER
+
+#include "controller.h"
+
+struct Trigger : Controller {
+
+    bool  immediate;
+    float timer;
+    int   baseState;
+
+    Trigger(TR::Level *level, int entity, bool immediate) : Controller(level, entity), immediate(immediate), timer(0.0f) {
+        baseState = state;
+    }
+
+    bool inState() {
+        return (state != baseState) == (getEntity().flags & ENTITY_FLAG_ACTIVE) > 0;
+    }
+
+    virtual bool activate(float timer) {
+        if (this->timer != 0.0f || !inState()) return false;
+        this->timer = timer;
+
+        getEntity().flags ^= ENTITY_FLAG_ACTIVE;
+        
+        if (immediate)
+            activateNext();
+
+        return true;
+    }
+
+    virtual void update() {
+        TR::Entity &entity = getEntity();
+
+        if (timer > 0.0f) {
+            timer -= Core::deltaTime;
+            if (timer <= 0.0f) {
+                timer = 0.0f;
+                entity.flags &= ~ENTITY_FLAG_ACTIVE;
+            }
+        }
+
+        if (timer < 0.0f) {
+            timer += Core::deltaTime;
+            if (timer >= 0.0f) {
+                timer = 0.0f;
+                entity.flags |= ENTITY_FLAG_ACTIVE;
+            }
+        }
+
+        if (!inState())
+            setState(state != baseState ? baseState : (entity.id == ENTITY_TRAP_BLADE ? 2 : (baseState ^ 1)));
+
+        updateAnimation(true);
+        updateEntity();
+    }
+};
+
+struct Dart : Trigger {
+    vec3 origin;
+
+    Dart(TR::Level *level, int entity) : Trigger(level, entity, true), origin(pos) {}
+
+    virtual bool activate(float timer) {
+        bool res = Trigger::activate(timer);
+        if (res)
+            playSound(151);
+        return res;
+    }
+
+    virtual void update() {
+        Trigger::update();
+        if (state != baseState) {
+            pos = origin + vec3(angle.x, angle.y) * (animTime * 4096.0f);
+            updateEntity();
+        } else {
+            pos = origin;
+            updateEntity();
+        }
+    }
+};
+
+#endif