diff --git a/rwengine/src/ai/AIGraph.cpp b/rwengine/src/ai/AIGraph.cpp
index 730b4e22..63f911d4 100644
--- a/rwengine/src/ai/AIGraph.cpp
+++ b/rwengine/src/ai/AIGraph.cpp
@@ -19,11 +19,11 @@ AIGraph::~AIGraph() {
 
 void AIGraph::createPathNodes(const glm::vec3& position,
                               const glm::quat& rotation, PathData& path) {
-    size_t startIndex = nodes.size();
+    auto startIndex = static_cast<std::uint32_t>(nodes.size());
     std::vector<AIGraphNode*> pathNodes;
     pathNodes.reserve(path.nodes.size());
 
-    for (size_t n = 0; n < path.nodes.size(); ++n) {
+    for (auto n = 0u; n < path.nodes.size(); ++n) {
         auto& node = path.nodes[n];
         AIGraphNode* ainode = nullptr;
         glm::vec3 nodePosition = position + (rotation * node.position);
@@ -71,7 +71,7 @@ void AIGraph::createPathNodes(const glm::vec3& position,
                     RW_MESSAGE("Warning: Node outside of grid at coord "
                             << gridcoord.x << " " << gridcoord.y);
                 }
-                auto index = (gridcoord.x * WORLD_GRID_WIDTH) + gridcoord.y;
+                auto index = static_cast<std::size_t>((gridcoord.x * WORLD_GRID_WIDTH) + gridcoord.y);
                 gridNodes[index].push_back(ainode);
             }
         }
diff --git a/rwengine/src/ai/CharacterController.cpp b/rwengine/src/ai/CharacterController.cpp
index 395f25f7..3875c2db 100644
--- a/rwengine/src/ai/CharacterController.cpp
+++ b/rwengine/src/ai/CharacterController.cpp
@@ -336,7 +336,7 @@ bool Activities::DriveTo::update(CharacterObject *character,
         // Choose the next node randomly
         if(nextTargetNode == nullptr) {
             auto& random = character->engine->randomEngine;
-            int i = std::uniform_int_distribution<>(0, potentialNodes.size() - 1)(random);
+            auto i = std::uniform_int_distribution<std::size_t>(0, potentialNodes.size() - 1)(random);
             nextTargetNode = potentialNodes.at(i);
         }
 
diff --git a/rwengine/src/ai/DefaultAIController.cpp b/rwengine/src/ai/DefaultAIController.cpp
index 33e55bb7..b4543093 100644
--- a/rwengine/src/ai/DefaultAIController.cpp
+++ b/rwengine/src/ai/DefaultAIController.cpp
@@ -67,7 +67,7 @@ void DefaultAIController::update(float dt) {
                     auto lastTarget = targetNode;
                     std::random_device rd;
                     std::default_random_engine re(rd());
-                    std::uniform_int_distribution<> d(
+                    std::uniform_int_distribution<size_t> d(
                         0, lastTarget->connections.size() - 1);
                     targetNode = lastTarget->connections.at(d(re));
                     setNextActivity(std::make_unique<Activities::GoTo>(
@@ -156,7 +156,7 @@ void DefaultAIController::update(float dt) {
                     // If we haven't found a node, choose one randomly
                     if (!targetNode) {
                         auto& random = getCharacter()->engine->randomEngine;
-                        int nodeIndex = std::uniform_int_distribution<>(0, lastTargetNode->connections.size() - 1)(random);
+                        size_t nodeIndex = std::uniform_int_distribution<size_t>(0, lastTargetNode->connections.size() - 1)(random);
                         targetNode = lastTargetNode->connections.at(nodeIndex);
                     }
 
diff --git a/rwengine/src/ai/TrafficDirector.cpp b/rwengine/src/ai/TrafficDirector.cpp
index 4cee0a92..636d3956 100644
--- a/rwengine/src/ai/TrafficDirector.cpp
+++ b/rwengine/src/ai/TrafficDirector.cpp
@@ -97,12 +97,6 @@ std::vector<GameObject*> TrafficDirector::populateNearby(
     auto& random = world->randomEngine;
     std::vector<GameObject*> created;
 
-    int availablePeds =
-        maximumPedestrians - world->pedestrianPool.objects.size();
-
-    int availableCars =
-        maximumCars - world->vehiclePool.objects.size();
-
     /// @todo Check how "in player view" should be determined.
 
     // Don't check the frustum for things more than 1/2 of the radius away
@@ -154,30 +148,30 @@ std::vector<GameObject*> TrafficDirector::populateNearby(
     auto availablePedsNodes = findAvailableNodes(AIGraphNode::Pedestrian, camera, radius);
 
     // We have not reached the limit of spawned pedestrians
-    if (availablePeds > 0) {
-        int counter = availablePeds;
+    if (maximumPedestrians > world->pedestrianPool.objects.size()) {
+        const auto availablePeds = maximumPedestrians - world->pedestrianPool.objects.size();
+        static const glm::vec3 kSpawnOffset{0.f, 0.f, 1.f};
+
+        size_t counter = availablePeds;
         // maxSpawn can be -1 for "as many as possible"
         if (maxSpawn > -1) {
-            counter = std::min(availablePeds, maxSpawn);
+            counter = std::min(availablePeds, static_cast<size_t>(maxSpawn));
         }
 
         for (AIGraphNode* spawn : availablePedsNodes) {
             if (spawn->type != AIGraphNode::Pedestrian) {
                 continue;
             }
-
-            if (counter > -1) {
-                if (counter <= 0) {
-                    break;
-                }
-                counter--;
+            if (counter == 0) {
+                break;
             }
+            counter--;
 
             // Spawn a pedestrian from the available pool
-            const uint16_t pedId = peds[std::uniform_int_distribution<>(
-                0, peds.size() - 1)(random)];
-            auto ped = world->createPedestrian(pedId, spawn->position);
-            ped->applyOffset();
+            const auto pedId = static_cast<std::uint16_t>(
+                peds[std::uniform_int_distribution<size_t>(0, peds.size() - 1)(random)]);
+            auto ped = world->createPedestrian(pedId,
+                                           spawn->position + kSpawnOffset);
             ped->setLifetime(GameObject::TrafficLifetime);
             ped->controller->setGoal(CharacterController::TrafficWander);
             created.push_back(ped);
@@ -187,25 +181,24 @@ std::vector<GameObject*> TrafficDirector::populateNearby(
     auto availableVehicleNodes = findAvailableNodes(AIGraphNode::Vehicle, camera, radius);
 
     // We have not reached the limit of spawned vehicles
-    if (availableCars > 0) {
-        int counter = availableCars;
+    if (maximumCars > world->vehiclePool.objects.size()) {
+        const auto availableCars = maximumCars - world->vehiclePool.objects.size();
+        static const glm::vec3 kSpawnOffset{0.f, 0.f, 1.f};
+
+        size_t counter = availableCars;
         // maxSpawn can be -1 for "as many as possible"
         if (maxSpawn > -1) {
-            counter = std::min(availableCars, maxSpawn);
+            counter = std::min(availableCars, static_cast<size_t>(maxSpawn));
         }
 
-
         for (AIGraphNode* spawn : availableVehicleNodes) {
             if (spawn->type != AIGraphNode::Vehicle) {
                 continue;
             }
-
-            if (counter > -1) {
-                if (counter <= 0) {
-                    break;
-                }
-                counter--;
+            if (counter == 0) {
+                break;
             }
+            counter--;
 
             // Get the next node, to spawn in between
             AIGraphNode* next = spawn->connections.at(0);
@@ -243,15 +236,15 @@ std::vector<GameObject*> TrafficDirector::populateNearby(
                 strafe * (2.5f + 5.f * static_cast<float>(lane - 1));
 
             // Spawn a vehicle from the available pool
-            const uint16_t carId = cars[std::uniform_int_distribution<>(
-                0, cars.size() - 1)(random)];
+            const auto carId = static_cast<std::uint16_t>(cars[std::uniform_int_distribution<std::size_t>(
+                0, cars.size() - 1)(random)]);
             auto vehicle = world->createVehicle(carId, next->position + diff + laneOffset, orientation);
             vehicle->applyOffset();
             vehicle->setLifetime(GameObject::TrafficLifetime);
             vehicle->setHandbraking(false);
 
             // Spawn a pedestrian and put it into the vehicle
-            int pedId = peds[std::uniform_int_distribution<>(0, peds.size() - 1)(random)];
+            const auto pedId = peds[std::uniform_int_distribution<std::size_t>(0, peds.size() - 1)(random)];
             CharacterObject* character = world->createPedestrian(pedId, vehicle->getPosition());
             character->setLifetime(GameObject::TrafficLifetime);
             character->setCurrentVehicle(vehicle, 0);
diff --git a/rwengine/src/ai/TrafficDirector.hpp b/rwengine/src/ai/TrafficDirector.hpp
index 76982289..db967ed8 100644
--- a/rwengine/src/ai/TrafficDirector.hpp
+++ b/rwengine/src/ai/TrafficDirector.hpp
@@ -39,8 +39,8 @@ private:
     GameWorld* world = nullptr;
     float pedDensity = 1.f;
     float carDensity = 1.f;
-    int maximumPedestrians = 20;
-    int maximumCars = 10;
+    size_t maximumPedestrians = 20;
+    size_t maximumCars = 10;
 };
 
 #endif
diff --git a/rwengine/src/audio/Sound.hpp b/rwengine/src/audio/Sound.hpp
index 6fc05ac4..c5669488 100644
--- a/rwengine/src/audio/Sound.hpp
+++ b/rwengine/src/audio/Sound.hpp
@@ -70,7 +70,7 @@ struct Sound {
         buffer->setMaxDistance(maxDist);
     }
 
-    int getScriptObjectID() const {
+    size_t getScriptObjectID() const {
         return id;
     }
 };
diff --git a/rwengine/src/audio/SoundBuffer.cpp b/rwengine/src/audio/SoundBuffer.cpp
index 2961d4d6..80f93843 100644
--- a/rwengine/src/audio/SoundBuffer.cpp
+++ b/rwengine/src/audio/SoundBuffer.cpp
@@ -24,7 +24,8 @@ bool SoundBuffer::bufferData(SoundSource& soundSource) {
     alCheck(alBufferData(
         buffer,
         soundSource.channels == 1 ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16,
-        &soundSource.data.front(), soundSource.data.size() * sizeof(int16_t),
+        &soundSource.data.front(),
+        static_cast<ALsizei>(soundSource.data.size() * sizeof(int16_t)),
         soundSource.sampleRate));
     alCheck(alSourcei(source, AL_BUFFER, buffer));
 
diff --git a/rwengine/src/audio/SoundManager.cpp b/rwengine/src/audio/SoundManager.cpp
index d0966093..4abf7b6c 100644
--- a/rwengine/src/audio/SoundManager.cpp
+++ b/rwengine/src/audio/SoundManager.cpp
@@ -226,7 +226,7 @@ void SoundManager::playSfx(size_t name, const glm::vec3& position, bool looping,
         buffer->second.setPitch(1.f);
         buffer->second.setGain(1.f);
         if (maxDist != -1) {
-            buffer->second.setMaxDistance(maxDist);
+            buffer->second.setMaxDistance(static_cast<float>(maxDist));
         }
         buffer->second.play();
     }
diff --git a/rwengine/src/audio/SoundSource.cpp b/rwengine/src/audio/SoundSource.cpp
index dedfec30..804287e3 100644
--- a/rwengine/src/audio/SoundSource.cpp
+++ b/rwengine/src/audio/SoundSource.cpp
@@ -248,7 +248,7 @@ struct InputData {
 /// to buffer.
 static int read_packet(void* opaque, uint8_t* buf, int buf_size) {
     auto* input = reinterpret_cast<InputData*>(opaque);
-    buf_size = FFMIN(buf_size, input->size);
+    buf_size = std::min(buf_size, static_cast<int>(input->size));
     /* copy internal data to buf */
     memcpy(buf, input->ptr, buf_size);
     input->ptr += buf_size;
diff --git a/rwengine/src/audio/SoundSource.hpp b/rwengine/src/audio/SoundSource.hpp
index c007a353..7f3334b5 100644
--- a/rwengine/src/audio/SoundSource.hpp
+++ b/rwengine/src/audio/SoundSource.hpp
@@ -1,8 +1,10 @@
 #ifndef _RWENGINE_SOUND_SOURCE_HPP_
 #define _RWENGINE_SOUND_SOURCE_HPP_
 
-#include <rw/filesystem.hpp>
 #include <loaders/LoaderSDT.hpp>
+#include <rw/filesystem.hpp>
+
+#include <cstdint>
 
 /// Opaque for raw sound,
 /// cooperate with ffmpeg
@@ -16,14 +18,14 @@ public:
     void loadFromFile(const rwfs::path& filePath);
 
     /// Load sound from sdt file
-    void loadSfx(LoaderSDT& sdt, size_t index, bool asWave = true);
+    void loadSfx(LoaderSDT& sdt, std::size_t index, bool asWave = true);
 
 private:
     /// Raw data
     std::vector<int16_t> data;
 
-    size_t channels;
-    size_t sampleRate;
+    std::uint32_t channels;
+    std::uint32_t sampleRate;
 };
 
 #endif
diff --git a/rwengine/src/data/Chase.cpp b/rwengine/src/data/Chase.cpp
index 8815966a..5d1dd9ee 100644
--- a/rwengine/src/data/Chase.cpp
+++ b/rwengine/src/data/Chase.cpp
@@ -96,7 +96,7 @@ void ChaseCoordinator::start() {
 
 void ChaseCoordinator::update(float dt) {
     chaseTime += dt;
-    size_t frameNum = chaseTime * KEYFRAMES_PER_SECOND;
+    auto frameNum = static_cast<size_t>(chaseTime * KEYFRAMES_PER_SECOND);
     for (auto &it : chaseVehicles) {
         RW_CHECK(frameNum < it.second.keyframes.size(),
                  "Vehicle out of chase keyframes");
diff --git a/rwengine/src/data/VehicleGenerator.hpp b/rwengine/src/data/VehicleGenerator.hpp
index 4f600e46..a969e743 100644
--- a/rwengine/src/data/VehicleGenerator.hpp
+++ b/rwengine/src/data/VehicleGenerator.hpp
@@ -53,7 +53,7 @@ struct VehicleGenerator {
         , remainingSpawns(remainingSpawns_) {
     }
 
-    int getScriptObjectID() const {
+    size_t getScriptObjectID() const {
         return generatorID;
     }
 };
diff --git a/rwengine/src/dynamics/CollisionInstance.cpp b/rwengine/src/dynamics/CollisionInstance.cpp
index 7edcb44c..3fcc22dc 100644
--- a/rwengine/src/dynamics/CollisionInstance.cpp
+++ b/rwengine/src/dynamics/CollisionInstance.cpp
@@ -95,9 +95,12 @@ bool CollisionInstance::createPhysicsBody(GameObject* object,
     auto& faces = collision->faces;
     if (!verts.empty() && !faces.empty()) {
         m_vertArray = std::make_unique<btTriangleIndexVertexArray>(
-            faces.size(), reinterpret_cast<int*>(faces.data()),
-            sizeof(CollisionModel::Triangle), verts.size(),
-            reinterpret_cast<float*>(verts.data()), sizeof(glm::vec3));
+            static_cast<int>(faces.size()),
+            reinterpret_cast<int*>(faces.data()),
+            static_cast<int>(sizeof(CollisionModel::Triangle)),
+            static_cast<int>(verts.size()),
+            reinterpret_cast<float*>(verts.data()),
+            static_cast<int>(sizeof(glm::vec3)));
         auto trishape =
             std::make_unique<btBvhTriangleMeshShape>(m_vertArray.get(), false);
         trishape->setMargin(0.05f);
diff --git a/rwengine/src/engine/GameWorld.cpp b/rwengine/src/engine/GameWorld.cpp
index 4c02c163..4abe33e2 100644
--- a/rwengine/src/engine/GameWorld.cpp
+++ b/rwengine/src/engine/GameWorld.cpp
@@ -224,8 +224,8 @@ VehicleObject* GameWorld::createVehicle(const uint16_t id, const glm::vec3& pos,
     auto palit = data->vehiclePalettes.find(
         vti->name);  // modelname is conveniently lowercase (usually)
     if (palit != data->vehiclePalettes.end() && !palit->second.empty()) {
-        std::uniform_int_distribution<int> uniform(0, palit->second.size() - 1);
-        int set = uniform(randomEngine);
+        std::uniform_int_distribution<size_t> uniform(0, palit->second.size() - 1);
+        size_t set = uniform(randomEngine);
         prim = data->vehicleColours[palit->second[set].first];
         sec = data->vehicleColours[palit->second[set].second];
     } else {
@@ -394,13 +394,13 @@ PickupObject* GameWorld::createPickup(const glm::vec3& pos, int id, int type) {
 
 Garage* GameWorld::createGarage(const glm::vec3 coord0, const glm::vec3 coord1,
                                 Garage::Type type) {
-    const int id = garages.size();
+    const size_t id = garages.size();
     garages.emplace_back(std::make_unique<Garage>(this, id, coord0, coord1, type));
     return garages.back().get();
 }
 
 Payphone* GameWorld::createPayphone(const glm::vec2 coord) {
-    int id = payphones.size();
+    const size_t id = payphones.size();
     payphones.emplace_back(std::make_unique<Payphone>(this, id, coord));
     return payphones.back().get();
 }
diff --git a/rwengine/src/engine/Garage.cpp b/rwengine/src/engine/Garage.cpp
index 097c3676..13088e89 100644
--- a/rwengine/src/engine/Garage.cpp
+++ b/rwengine/src/engine/Garage.cpp
@@ -14,8 +14,8 @@
 #include "objects/InstanceObject.hpp"
 #include "objects/VehicleObject.hpp"
 
-Garage::Garage(GameWorld* engine_, const int id_, const glm::vec3 coord0,
-               const glm::vec3 coord1, const Type type_)
+Garage::Garage(GameWorld* engine_, size_t id_, glm::vec3 coord0,
+               glm::vec3 coord1, Type type_)
     : engine(engine_), id(id_), type(type_) {
     min.x = std::min(coord0.x, coord1.x);
     min.y = std::min(coord0.y, coord1.y);
diff --git a/rwengine/src/engine/Garage.hpp b/rwengine/src/engine/Garage.hpp
index 1cfc263a..38b0b86c 100644
--- a/rwengine/src/engine/Garage.hpp
+++ b/rwengine/src/engine/Garage.hpp
@@ -72,9 +72,9 @@ public:
     enum class State { Closed, Closing, Opening, Opened };
 
     GameWorld* engine;
-    int id;
+    size_t id;
 
-    int getScriptObjectID() const {
+    size_t getScriptObjectID() const {
         return id;
     }
 
@@ -91,8 +91,8 @@ public:
 
     bool resprayDone = false;
 
-    Garage(GameWorld* engine_, const int id_, const glm::vec3 coord0,
-               const glm::vec3 coord1, const Type type_);
+    Garage(GameWorld* engine_, size_t id_, glm::vec3 coord0,
+               glm::vec3 coord1, Type type_);
     ~Garage() = default;
 
     void makeDoorSwing();
diff --git a/rwengine/src/engine/Payphone.cpp b/rwengine/src/engine/Payphone.cpp
index f78d194f..4215566b 100644
--- a/rwengine/src/engine/Payphone.cpp
+++ b/rwengine/src/engine/Payphone.cpp
@@ -11,7 +11,7 @@
 #include "objects/GameObject.hpp"
 #include "objects/InstanceObject.hpp"
 
-Payphone::Payphone(GameWorld* engine_, const int id_, const glm::vec2 coord)
+Payphone::Payphone(GameWorld* engine_, size_t id_, glm::vec2 coord)
     : engine(engine_), id(id_) {
     // Find payphone object, original game does this differently
     for (const auto& p : engine->instancePool.objects) {
diff --git a/rwengine/src/engine/Payphone.hpp b/rwengine/src/engine/Payphone.hpp
index bf243af8..7dc6d190 100644
--- a/rwengine/src/engine/Payphone.hpp
+++ b/rwengine/src/engine/Payphone.hpp
@@ -26,13 +26,13 @@ public:
 
     State state = State::Idle;
 
-    int id;
+    size_t id;
 
-    int getScriptObjectID() const {
+    size_t getScriptObjectID() const {
         return id;
     }
 
-    Payphone(GameWorld* engine_, const int id_, const glm::vec2 coord);
+    Payphone(GameWorld* engine_, size_t id_, glm::vec2 coord);
     ~Payphone() = default;
 
     // Makes a payphone ring
diff --git a/rwengine/src/engine/ScreenText.cpp b/rwengine/src/engine/ScreenText.cpp
index 84712892..be8cf122 100644
--- a/rwengine/src/engine/ScreenText.cpp
+++ b/rwengine/src/engine/ScreenText.cpp
@@ -5,7 +5,7 @@
 #include "fonts/FontMapGta3.hpp"
 
 void ScreenText::tick(float dt) {
-    int millis = dt * 1000;
+    int millis = static_cast<int>(dt * 1000);
 
     // Remove all the immedate text
     m_textQueues[static_cast<size_t>(ScreenTextType::Immediate)].clear();
diff --git a/rwengine/src/items/Weapon.cpp b/rwengine/src/items/Weapon.cpp
index bab82d53..4b9768fa 100644
--- a/rwengine/src/items/Weapon.cpp
+++ b/rwengine/src/items/Weapon.cpp
@@ -16,7 +16,7 @@ void Weapon::fireHitscan(WeaponData* weapon, CharacterObject* owner) {
     const auto& raydirection = owner->getLookDirection();
     const auto rayend = owner->getPosition() + raydirection * weapon->hitRange;
     auto fireOrigin = glm::vec3(handMatrix[3]);
-    float dmg = weapon->damage;
+    float dmg = static_cast<float>(weapon->damage);
 
     owner->engine->doWeaponScan({dmg, fireOrigin, rayend, weapon});
 }
diff --git a/rwengine/src/objects/PickupObject.cpp b/rwengine/src/objects/PickupObject.cpp
index 6b3229bc..babafa00 100644
--- a/rwengine/src/objects/PickupObject.cpp
+++ b/rwengine/src/objects/PickupObject.cpp
@@ -191,9 +191,9 @@ void PickupObject::tick(float dt) {
     float time = engine->getGameTime();
     float colourValue = 0.5f * (std::sin(time * 3.0664064f) * 0.3f + 0.3f);
     uint32_t* colour = &colours[m_colourId];
-    float red = (*colour >> 16) & 0xFF;
-    float green = (*colour >> 8) & 0xFF;
-    float blue = *colour & 0xFF;
+    float red = static_cast<float>((*colour >> 16) & 0xFF);
+    float green = static_cast<float>((*colour >> 8) & 0xFF);
+    float blue = static_cast<float>(*colour & 0xFF);
     m_corona.colour =
         glm::vec4(red / 255.f, green / 255.f, blue / 255.f, 1.f) * colourValue;
 
diff --git a/rwengine/src/objects/PickupObject.hpp b/rwengine/src/objects/PickupObject.hpp
index 38a7bbaf..dabc4368 100644
--- a/rwengine/src/objects/PickupObject.hpp
+++ b/rwengine/src/objects/PickupObject.hpp
@@ -17,7 +17,7 @@ class BaseModelInfo;
 class GameWorld;
 class CharacterObject;
 class VehicleObject;
-class VisualFX;
+struct VisualFX;
 
 /**
  * @brief The PickupObject class
diff --git a/rwengine/src/objects/ProjectileObject.cpp b/rwengine/src/objects/ProjectileObject.cpp
index b147e8ed..4b0d504c 100644
--- a/rwengine/src/objects/ProjectileObject.cpp
+++ b/rwengine/src/objects/ProjectileObject.cpp
@@ -55,7 +55,7 @@ void ProjectileObject::explode() {
 
         const float exp_size = 10.f;
         const float damageSize = 5.f;
-        const float damage = _info.weapon->damage;
+        const float damage = static_cast<float>(_info.weapon->damage);
 
         for (auto& o : engine->allObjects) {
             if (o == this) continue;
diff --git a/rwengine/src/objects/VehicleObject.cpp b/rwengine/src/objects/VehicleObject.cpp
index 6f363acc..74bdba8d 100644
--- a/rwengine/src/objects/VehicleObject.cpp
+++ b/rwengine/src/objects/VehicleObject.cpp
@@ -1042,7 +1042,7 @@ float VehicleObject::isInFront(const glm::vec3& point) {
     normal = glm::normalize(normal);
 
     const glm::vec3 vecTemp(testPoint.x - v1.x, 0, testPoint.y - v1.y);
-    double distance = glm::dot(vecTemp, normal);
+    float distance = glm::dot(vecTemp, normal);
 
     return distance;
 }
@@ -1073,7 +1073,7 @@ float VehicleObject::isOnSide(const glm::vec3& point) {
     normal = glm::normalize(normal);
 
     const glm::vec3 vecTemp(testPoint.x - v1.x, 0, testPoint.y - v1.y);
-    double distance = glm::dot(vecTemp, normal);
+    float distance = glm::dot(vecTemp, normal);
 
     return distance;
 }
diff --git a/rwengine/src/render/GameRenderer.cpp b/rwengine/src/render/GameRenderer.cpp
index cd0d8ce9..fe9ed972 100644
--- a/rwengine/src/render/GameRenderer.cpp
+++ b/rwengine/src/render/GameRenderer.cpp
@@ -144,12 +144,12 @@ GameRenderer::GameRenderer(Logger* log, GameData* _data)
     skydomeIndBuff.resize(rows * segments * 6);
     for (size_t r = 0, i = 0; r < (rows - 1); ++r) {
         for (size_t s = 0; s < (segments - 1); ++s) {
-            skydomeIndBuff[i++] = r * segments + s;
-            skydomeIndBuff[i++] = r * segments + (s + 1);
-            skydomeIndBuff[i++] = (r + 1) * segments + (s + 1);
-            skydomeIndBuff[i++] = r * segments + s;
-            skydomeIndBuff[i++] = (r + 1) * segments + (s + 1);
-            skydomeIndBuff[i++] = (r + 1) * segments + s;
+            skydomeIndBuff[i++] = static_cast<GLuint>(r * segments + s);
+            skydomeIndBuff[i++] = static_cast<GLuint>(r * segments + (s + 1));
+            skydomeIndBuff[i++] = static_cast<GLuint>((r + 1) * segments + (s + 1));
+            skydomeIndBuff[i++] = static_cast<GLuint>(r * segments + s);
+            skydomeIndBuff[i++] = static_cast<GLuint>((r + 1) * segments + (s + 1));
+            skydomeIndBuff[i++] = static_cast<GLuint>((r + 1) * segments + s);
         }
     }
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, skydomeIBO);
@@ -325,7 +325,7 @@ RenderList GameRenderer::createObjectRenderList(const GameWorld *world) {
     // run in parallel with a good threading system.
     RenderList renderList;
     // Naive optimisation, assume 50% hitrate
-    renderList.reserve(world->allObjects.size() * 0.5f);
+    renderList.reserve(static_cast<size_t>(world->allObjects.size() * 0.5f));
 
     ObjectRenderer objectRenderer(_renderWorld,
                                   (cullOverride ? cullingCamera : _camera),
diff --git a/rwengine/src/render/ObjectRenderer.cpp b/rwengine/src/render/ObjectRenderer.cpp
index 4abc2d69..3c804052 100644
--- a/rwengine/src/render/ObjectRenderer.cpp
+++ b/rwengine/src/render/ObjectRenderer.cpp
@@ -277,9 +277,9 @@ void ObjectRenderer::renderVehicle(VehicleObject* vehicle,
 
     auto wheelatomic = woi->getDistanceAtomic(mindist);
     for (size_t w = 0; w < vehicle->info->wheels.size(); ++w) {
-        auto& wi = vehicle->physVehicle->getWheelInfo(w);
+        auto& wi = vehicle->physVehicle->getWheelInfo(static_cast<int>(w));
         // Construct our own matrix so we can use the local transform
-        vehicle->physVehicle->updateWheelTransform(w, false);
+        vehicle->physVehicle->updateWheelTransform(static_cast<int>(w), false);
         bool isRhino = (vehicle->getVehicle()->vehiclename_ == "RHINO");
 
         auto up = -wi.m_wheelDirectionCS;
diff --git a/rwengine/src/render/OpenGLRenderer.cpp b/rwengine/src/render/OpenGLRenderer.cpp
index c4942508..550bdc42 100644
--- a/rwengine/src/render/OpenGLRenderer.cpp
+++ b/rwengine/src/render/OpenGLRenderer.cpp
@@ -299,7 +299,8 @@ void OpenGLRenderer::draw(const glm::mat4& model, DrawBuffer* draw,
                           const Renderer::DrawParameters& p) {
     setDrawState(model, draw, p);
 
-    glDrawElements(draw->getFaceType(), p.count, GL_UNSIGNED_INT,
+    glDrawElements(draw->getFaceType(), static_cast<GLsizei>(p.count),
+                   GL_UNSIGNED_INT,
                    reinterpret_cast<void*>(sizeof(RenderIndex) * p.start));
 }
 
@@ -307,7 +308,7 @@ void OpenGLRenderer::drawArrays(const glm::mat4& model, DrawBuffer* draw,
                                 const Renderer::DrawParameters& p) {
     setDrawState(model, draw, p);
 
-    glDrawArrays(draw->getFaceType(), p.start, p.count);
+    glDrawArrays(draw->getFaceType(), static_cast<GLint>(p.start), static_cast<GLsizei>(p.count));
 }
 
 void OpenGLRenderer::drawBatched(const RenderList& list) {
diff --git a/rwengine/src/render/OpenGLRenderer.hpp b/rwengine/src/render/OpenGLRenderer.hpp
index ce7a36b8..8b2faaff 100644
--- a/rwengine/src/render/OpenGLRenderer.hpp
+++ b/rwengine/src/render/OpenGLRenderer.hpp
@@ -85,7 +85,7 @@ public:
         /// Number of indices
         size_t count{};
         /// Start index.
-        unsigned int start{};
+        size_t start{};
         /// Textures to use
         Textures textures{};
         /// Blending mode
diff --git a/rwengine/src/render/TextRenderer.cpp b/rwengine/src/render/TextRenderer.cpp
index 49e911d4..6e8378bb 100644
--- a/rwengine/src/render/TextRenderer.cpp
+++ b/rwengine/src/render/TextRenderer.cpp
@@ -20,10 +20,10 @@ unsigned charToIndex(std::uint16_t g) {
     return g - 32;
 }
 
-glm::vec4 indexToTexCoord(int index, const glm::u32vec2 &textureSize, const glm::u8vec2 &glyphOffset) {
+static glm::vec4 indexToTexCoord(size_t index, const glm::u32vec2 &textureSize, const glm::u8vec2 &glyphOffset) {
     constexpr unsigned TEXTURE_COLUMNS = 16;
-    const float x = index % TEXTURE_COLUMNS;
-    const float y = index / TEXTURE_COLUMNS;
+    const float x = static_cast<float>(index % TEXTURE_COLUMNS);
+    const float y = static_cast<float>(index / TEXTURE_COLUMNS);
     // Add offset to avoid 'leakage' between adjacent glyphs
     float s = (x * glyphOffset.x + 0.5f) / textureSize.x;
     float t = (y * glyphOffset.y + 0.5f) / textureSize.y;
@@ -284,7 +284,7 @@ void TextRenderer::renderText(const TextRenderer::TextInfo& ti,
         // will need to be wrapped
         if (ti.wrapX > 0 && coord.x > 0.f && !std::isspace(c)) {
             auto wend = std::find_if(std::begin(text) + i, std::end(text),
-                                     [](char x) { return std::isspace(x); });
+                                     [](GameStringChar c) { return std::isspace(c); });
             if (wend != std::end(text)) {
                 auto word = std::distance(std::begin(text) + i, wend);
                 if (lineLength + word >= ti.wrapX) {
diff --git a/rwengine/src/render/ViewFrustum.hpp b/rwengine/src/render/ViewFrustum.hpp
index 0bb4aa41..f3345dfa 100644
--- a/rwengine/src/render/ViewFrustum.hpp
+++ b/rwengine/src/render/ViewFrustum.hpp
@@ -32,9 +32,9 @@ public:
     }
 
     void update(const glm::mat4& proj) {
-        for (size_t i = 0; i < 6; ++i) {
+        for (auto i = 0u; i < 6; ++i) {
             float sign = (i % 2 == 0) ? 1.f : -1.f;
-            int r = i / 2;
+            auto r = i / 2;
             planes[i].normal.x = proj[0][3] + proj[0][r] * sign;
             planes[i].normal.y = proj[1][3] + proj[1][r] * sign;
             planes[i].normal.z = proj[2][3] + proj[2][r] * sign;
diff --git a/rwengine/src/render/WaterRenderer.cpp b/rwengine/src/render/WaterRenderer.cpp
index 3072e345..0992f7b7 100644
--- a/rwengine/src/render/WaterRenderer.cpp
+++ b/rwengine/src/render/WaterRenderer.cpp
@@ -49,7 +49,7 @@ WaterRenderer::WaterRenderer(GameRenderer* renderer) {
         }
     }
 
-    gridGeom.uploadVertices(grid.size(), sizeof(glm::vec2) * grid.size(),
+    gridGeom.uploadVertices(static_cast<GLsizei>(grid.size()), sizeof(glm::vec2) * grid.size(),
                             grid.data());
     gridGeom.getDataAttributes().emplace_back(ATRS_Position, 2, 0, 0, GL_FLOAT);
     gridDraw.addGeometry(&gridGeom);
@@ -58,15 +58,15 @@ WaterRenderer::WaterRenderer(GameRenderer* renderer) {
 void WaterRenderer::setWaterTable(const float* waterHeights, const unsigned int nHeights,
                                   const uint8_t* tiles, const unsigned int nTiles) {
     // Determine the dimensions of the input tiles
-    int edgeNum = sqrt(nTiles);
+    auto edgeNum = static_cast<unsigned int>(sqrt(nTiles));
     float tileSize = WATER_WORLD_SIZE / edgeNum;
     glm::vec2 wO{-WATER_WORLD_SIZE / 2.f, -WATER_WORLD_SIZE / 2.f};
 
     std::vector<glm::vec3> vertexData;
 
-    for (int x = 0; x < edgeNum; x++) {
+    for (auto x = 0u; x < edgeNum; x++) {
         int xi = x * WATER_HQ_DATA_SIZE;
-        for (int y = 0; y < edgeNum; y++) {
+        for (auto y = 0u; y < edgeNum; y++) {
             if (tiles[xi + y] >= nHeights) continue;
 
             // Tiles with the magic value contain no water.
@@ -87,7 +87,7 @@ void WaterRenderer::setWaterTable(const float* waterHeights, const unsigned int
         }
     }
 
-    maskGeom.uploadVertices(vertexData.size(),
+    maskGeom.uploadVertices(static_cast<GLsizei>(vertexData.size()),
                             sizeof(glm::vec3) * vertexData.size(),
                             vertexData.data());
     maskGeom.getDataAttributes().emplace_back(ATRS_Position, 3, 0, 0, GL_FLOAT);
diff --git a/rwengine/src/script/SCMFile.cpp b/rwengine/src/script/SCMFile.cpp
index 7ffb025b..04fafd19 100644
--- a/rwengine/src/script/SCMFile.cpp
+++ b/rwengine/src/script/SCMFile.cpp
@@ -3,7 +3,7 @@
 #include <algorithm>
 #include <cstddef>
 
-void SCMFile::loadFile(char *data, unsigned int size) {
+void SCMFile::loadFile(char *data, size_t size) {
     _data = std::make_unique<SCMByte[]>(size);
     std::copy(data, data + size, _data.get());
 
diff --git a/rwengine/src/script/SCMFile.hpp b/rwengine/src/script/SCMFile.hpp
index 29d22cf8..dc711b3b 100644
--- a/rwengine/src/script/SCMFile.hpp
+++ b/rwengine/src/script/SCMFile.hpp
@@ -29,7 +29,7 @@ public:
         return _data.get();
     }
 
-    void loadFile(char* data, unsigned int size);
+    void loadFile(char* data, size_t size);
 
     SCMByte* data() const {
         return _data.get();
diff --git a/rwengine/src/script/ScriptMachine.cpp b/rwengine/src/script/ScriptMachine.cpp
index 10c029b8..3b4b9d9b 100644
--- a/rwengine/src/script/ScriptMachine.cpp
+++ b/rwengine/src/script/ScriptMachine.cpp
@@ -228,7 +228,7 @@ SCMByte* ScriptMachine::getGlobals() {
 
 void ScriptMachine::execute(float dt) {
     RW_PROFILE_SCOPEC(__func__, MP_ORANGERED);
-    int ms = dt * 1000.f;
+    int ms = static_cast<int>(dt * 1000.f);
     for (auto t = _activeThreads.begin(); t != _activeThreads.end(); ++t) {
         auto& thread = *t;
         executeThread(thread, ms);
diff --git a/rwengine/src/script/ScriptMachine.hpp b/rwengine/src/script/ScriptMachine.hpp
index 91027d10..cd1c4c08 100644
--- a/rwengine/src/script/ScriptMachine.hpp
+++ b/rwengine/src/script/ScriptMachine.hpp
@@ -167,15 +167,14 @@ public:
     template <typename T>
     typename std::enable_if<std::is_integral<T>::value, T>::type
     getRandomNumber(T min, T max) {
-        std::uniform_int_distribution<> dist(min, max);
+        std::uniform_int_distribution<T> dist(min, max);
         return dist(randomNumberGen);
     }
 
     template <typename T>
     typename std::enable_if<std::is_floating_point<T>::value, T>::type
     getRandomNumber(T min, T max) {
-        std::uniform_real_distribution<> dist(static_cast<double>(min),
-                                              static_cast<double>(max));
+        std::uniform_real_distribution<T> dist(min, max);
         return dist(randomNumberGen);
     }
 
diff --git a/rwengine/src/script/ScriptTypes.hpp b/rwengine/src/script/ScriptTypes.hpp
index c2d25a2f..0225d754 100644
--- a/rwengine/src/script/ScriptTypes.hpp
+++ b/rwengine/src/script/ScriptTypes.hpp
@@ -77,7 +77,7 @@ struct ScriptObjectType {
     T* operator=(T* object) {
         RW_CHECK(m_id != nullptr,
                  "ScriptObjectType has pointer to null memory location");
-        *m_id = object->getScriptObjectID();
+        *m_id = static_cast<ScriptInt>(object->getScriptObjectID());
         m_object = object;
         return object;
     }
diff --git a/rwengine/src/script/modules/GTA3ModuleImpl.inl b/rwengine/src/script/modules/GTA3ModuleImpl.inl
index 78136b2a..7bdd2a85 100644
--- a/rwengine/src/script/modules/GTA3ModuleImpl.inl
+++ b/rwengine/src/script/modules/GTA3ModuleImpl.inl
@@ -5456,7 +5456,7 @@ void opcode_01e8(const ScriptArguments& args, ScriptVec3 coord0, ScriptVec3 coor
 void opcode_01e9(const ScriptArguments& args, const ScriptVehicle vehicle,
                  ScriptInt& numOfPassengers) {
     RW_UNUSED(args);
-    numOfPassengers = vehicle->seatOccupants.size();
+    numOfPassengers = static_cast<int>(vehicle->seatOccupants.size());
 }
 
 /**
@@ -5469,7 +5469,7 @@ void opcode_01e9(const ScriptArguments& args, const ScriptVehicle vehicle,
 void opcode_01ea(const ScriptArguments& args, const ScriptVehicle vehicle,
                  ScriptInt& maxNumOfPassengers) {
     RW_UNUSED(args);
-    maxNumOfPassengers = vehicle->info->seats.size();
+    maxNumOfPassengers = static_cast<int>(vehicle->info->seats.size());
 }
 
 /**
@@ -7740,7 +7740,7 @@ void opcode_02dd(const ScriptArguments& args, const ScriptString areaName, Scrip
         }
 
         // Only return a result if we found a character
-        unsigned int candidateCount = candidates.size();
+        const auto candidateCount = candidates.size();
         if (candidateCount > 0) {
             // Return the handle for any random character in this zone and use lifetime for use by script
             // @todo verify if the lifetime is actually changed in the original game