1 files changed, 57 insertions, 2 deletions

diff --git a/src/model/Map.cpp b/src/model/Map.cpp
index faead6d..a5b5ee9 100644
--- a/src/model/Map.cpp
+++ b/src/model/Map.cpp
@@ -31,6 +31,62 @@ namespace RPGEdit {
 
 namespace Model {
 
+Position Map::getEntityPosition(const Entity *entity, uint64_t time) const {
+	const EntityState &state = entityStates.at(entity);
+
+	if (state.transitionEnd)
+		if (time <= state.transitionStart)
+			return state.position;
+		else if (time >= state.transitionEnd)
+			return state.position + state.direction;
+		else
+			return state.position.translate(state.direction,
+							float(time-state.transitionStart)/
+							float(state.transitionEnd-state.transitionStart));
+	else
+		return state.position;
+}
+
+bool Map::moveEntity(Entity *entity, Direction dir, uint64_t start, uint64_t end) {
+	EntityState &state = entityStates.at(entity);
+
+	if (state.transitionEnd)
+		return false;
+
+	entity->setDirection(dir);
+
+	Position pos = state.position + dir;
+
+	if (getCollisionAt(pos.x, pos.y) == BLOCKED)
+		return false;
+
+	setCollisionAt(pos.x, pos.y, BLOCKED);
+
+	state.transitionStart = start;
+	state.transitionEnd = end;
+	state.direction = dir;
+
+	return true;
+}
+
+void Map::moveEntityTo(Entity *entity, Position pos) {
+	EntityState &state = entityStates.at(entity);
+
+	setCollisionAt(state.position.x, state.position.y, EMPTY);
+	setCollisionAt(pos.x, pos.y, BLOCKED);
+
+	state.position = pos;
+	state.transitionStart = state.transitionEnd = 0;
+
+}
+
+void Map::finishEntityTransition(Entity *entity) {
+	EntityState &state = entityStates.at(entity);
+
+	if (state.transitionEnd)
+		moveEntityTo(entity, state.position + state.direction);
+}
+
 std::unique_ptr<Map> Map::load(__attribute__((unused)) const std::string &name) {
 	std::unique_ptr<Map> map(new Map(16, 16, 2));
 
@@ -54,8 +110,7 @@ std::unique_ptr<Map> Map::load(__attribute__((unused)) const std::string &name)
 		}
 	}
 
-	map->entities.emplace_back("square");
-	map->entities.back().moveTo(map.get(), Model::Position{6, 6});
+	map->addEntity("square", Model::Position{6, 6});
 
 	return map;
 }