[CSM] Add camera API (#5609)
authorbigfoot547 <bigfoot547@users.noreply.github.com>
Fri, 5 May 2017 20:07:36 +0000 (15:07 -0500)
committerLoïc Blot <nerzhul@users.noreply.github.com>
Fri, 5 May 2017 20:07:36 +0000 (22:07 +0200)
* [CSM] Add camera API
roper rebase & squash

* Address nerzhul's review

build/android/jni/Android.mk
doc/client_lua_api.md
src/camera.cpp
src/camera.h
src/script/lua_api/CMakeLists.txt
src/script/lua_api/l_camera.cpp [new file with mode: 0644]
src/script/lua_api/l_camera.h [new file with mode: 0644]
src/script/lua_api/l_localplayer.cpp
src/script/lua_api/l_localplayer.h
src/script/scripting_client.cpp
src/script/scripting_client.h

index 6525942bd963f220581c9f6e4547948813c5aeb4..d4a8d988f8e8f8364744932b99c164537973106b 100644 (file)
@@ -305,6 +305,7 @@ LOCAL_SRC_FILES += \
                jni/src/script/cpp_api/s_server.cpp       \
                jni/src/script/lua_api/l_areastore.cpp    \
                jni/src/script/lua_api/l_base.cpp         \
+               jni/src/script/lua_api/l_camera.cpp       \
                jni/src/script/lua_api/l_client.cpp       \
                jni/src/script/lua_api/l_craft.cpp        \
                jni/src/script/lua_api/l_env.cpp          \
index b76a406eaf594568c32bb74581dca072f5ce3330..a4293500f79664dba276fbd4b6680d567bdf9a4b 100644 (file)
@@ -694,7 +694,7 @@ Call these functions only at load time!
 * `minetest.get_wielded_item()`
     * Returns the itemstack the local player is holding
 * `minetest.localplayer`
-    * Reference to the LocalPlayer object. See `LocalPlayer` class reference for methods.
+    * Reference to the LocalPlayer object. See [`LocalPlayer`](#localplayer) class reference for methods.
 
 ### Client Environment
 * `minetest.get_player_names()`
@@ -750,7 +750,7 @@ Call these functions only at load time!
     * Encodes a string in base64.
 * `minetest.decode_base64(string)`: returns string
     * Decodes a string encoded in base64.
-* `minetest.gettext(string) : returns string
+* `minetest.gettext(string)` : returns string
     * look up the translation of a string in the gettext message catalog
 * `fgettext_ne(string, ...)`
     * call minetest.gettext(string), replace "$1"..."$9" with the given
@@ -762,7 +762,9 @@ Call these functions only at load time!
 
 ### UI
 * `minetest.ui.minimap`
-    * Reference to the minimap object. See `Minimap` class reference for methods.
+    * Reference to the minimap object. See [`Minimap`](#minimap) class reference for methods.
+* `minetest.camera`
+    * Reference to the camera object. See [`Camera`](#camera) class reference for methods.
 * `minetest.show_formspec(formname, formspec)` : returns true on success
        * Shows a formspec to the player
 * `minetest.display_chat_message(message)` returns true on success
@@ -785,6 +787,40 @@ An interface to manipulate minimap on client UI
 * `set_shape(shape)`: Sets the minimap shape. (0 = square, 1 = round)
 * `get_shape()`: Gets the minimap shape. (0 = square, 1 = round)
 
+### Camera
+An interface to get or set information about the camera and cameranode.
+Please do not try to access the reference until the camera is initialized, otherwise the reference will be nil.
+
+#### Methods
+* `set_camera_mode(mode)`
+    * Pass `0` for first-person, `1` for third person, and `2` for third person front
+* `get_camera_mode()`
+    * Returns with same syntax as above
+* `get_fov()`
+    * Returns:
+    
+```lua
+     {
+         x = number,
+         y = number,
+         max = number,
+         actual = number
+     }
+```
+    
+* `get_pos()`
+    * Returns position of camera with view bobbing
+* `get_offset()`
+    * Returns eye offset vector
+* `get_look_dir()`
+    * Returns eye direction unit vector
+* `get_look_vertical()`
+    * Returns pitch in radians
+* `get_look_horizontal()`
+    * Returns yaw in radians
+* `get_aspect_ratio()`
+    * Returns aspect ratio of screen
+
 ### LocalPlayer
 An interface to retrieve information about the player. The player is
 not accessible until the client is fully done loading and therefore
@@ -844,16 +880,6 @@ Methods:
     * returns last player speed
 * `get_breath()`
     * returns the player's breath
-* `get_look_dir()`
-    * returns look direction vector
-* `get_look_horizontal()`
-    * returns look horizontal angle
-* `get_look_vertical()`
-    * returns look vertical angle
-* `get_eye_pos()`
-    * returns the player's eye position
-* `get_eye_offset()`
-    * returns the player's eye shift vector
 * `get_movement_acceleration()`
     * returns acceleration of the player in different environments:
 
index b119bbfbbeda6a70247a0e8fa5a0d7996a55a30e..949494b002c5722c04d0d5718e5fc29edf4d9792 100644 (file)
@@ -33,6 +33,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/numeric.h"
 #include "constants.h"
 #include "fontengine.h"
+#include "script/scripting_client.h"
 
 #define CAMERA_OFFSET_STEP 200
 
@@ -125,6 +126,10 @@ bool Camera::successfullyCreated(std::string &error_message)
        } else {
                error_message.clear();
        }
+       
+       if (g_settings->getBool("enable_client_modding")) {
+               m_client->getScript()->on_camera_ready(this);
+       }
        return error_message.empty();
 }
 
index e4c1d0b25e64def18bc6cd57485e81c063e4aa62..ca2e4ddcc924a04c1e0adf25e1ca9010ff487c2f 100644 (file)
@@ -160,7 +160,13 @@ public:
                else
                        m_camera_mode = CAMERA_MODE_FIRST;
        }
-
+       
+       // Set the current camera mode
+       inline void setCameraMode(CameraMode mode)
+       {
+               m_camera_mode = mode;
+       }
+       
        //read the current camera mode
        inline CameraMode getCameraMode()
        {
index b03e94a0946fc585c6321ab29b0e9e8cb990b85b..1a78580e60077e14c8bf80d5306921732fe1b4cf 100644 (file)
@@ -29,4 +29,5 @@ set(client_SCRIPT_LUA_API_SRCS
        ${CMAKE_CURRENT_SOURCE_DIR}/l_storage.cpp
        ${CMAKE_CURRENT_SOURCE_DIR}/l_sound.cpp
        ${CMAKE_CURRENT_SOURCE_DIR}/l_localplayer.cpp
+       ${CMAKE_CURRENT_SOURCE_DIR}/l_camera.cpp
        PARENT_SCOPE)
diff --git a/src/script/lua_api/l_camera.cpp b/src/script/lua_api/l_camera.cpp
new file mode 100644 (file)
index 0000000..e6229ff
--- /dev/null
@@ -0,0 +1,206 @@
+#include "script/common/c_converter.h"
+#include "l_camera.h"
+#include "l_internal.h"
+#include "content_cao.h"
+#include "camera.h"
+
+LuaCamera::LuaCamera(Camera *m)
+{
+       m_camera = m;
+}
+
+void LuaCamera::create(lua_State *L, Camera *m)
+{
+       LuaCamera *o = new LuaCamera(m);
+       *(void **) (lua_newuserdata(L, sizeof(void *))) = o;
+       luaL_getmetatable(L, className);
+       lua_setmetatable(L, -2);
+       
+       int camera_object = lua_gettop(L);
+       
+       lua_getglobal(L, "core");
+       luaL_checktype(L, -1, LUA_TTABLE);
+       int coretable = lua_gettop(L);
+       
+       lua_pushvalue(L, camera_object);
+       lua_setfield(L, coretable, "camera");
+}
+
+int LuaCamera::l_set_camera_mode(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       GenericCAO *playercao = getClient(L)->getEnv().getLocalPlayer()->getCAO();
+       if (!camera)
+               return 0;
+       sanity_check(playercao);
+       if (!lua_isnumber(L, 2))
+               return 0;
+       
+       camera->setCameraMode((CameraMode)((int)lua_tonumber(L, 2)));
+       playercao->setVisible(camera->getCameraMode() > CAMERA_MODE_FIRST);
+       playercao->setChildrenVisible(camera->getCameraMode() > CAMERA_MODE_FIRST);
+       return 0;
+}
+
+int LuaCamera::l_get_camera_mode(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       if (!camera)
+               return 0;
+       
+       lua_pushnumber(L, (int)camera->getCameraMode());
+       
+       return 1;
+}
+
+int LuaCamera::l_get_fov(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       if (!camera)
+               return 0;
+       
+       lua_newtable(L);
+       lua_pushnumber(L, camera->getFovX() * core::DEGTORAD);
+       lua_setfield(L, -2, "x");
+       lua_pushnumber(L, camera->getFovY() * core::DEGTORAD);
+       lua_setfield(L, -2, "y");
+       lua_pushnumber(L, camera->getCameraNode()->getFOV() * core::RADTODEG);
+       lua_setfield(L, -2, "actual");
+       lua_pushnumber(L, camera->getFovMax() * core::RADTODEG);
+       lua_setfield(L, -2, "max");
+       return 1;
+}
+
+int LuaCamera::l_get_pos(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       if (!camera)
+               return 0;
+       
+       push_v3f(L, camera->getPosition());
+       return 1;
+}
+
+int LuaCamera::l_get_offset(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       if (!camera)
+               return 0;
+       
+       push_v3s16(L, camera->getOffset());
+       return 1;
+}
+
+int LuaCamera::l_get_look_dir(lua_State *L)
+{
+       LocalPlayer *player = getClient(L)->getEnv().getLocalPlayer();
+       sanity_check(player);
+
+       float pitch = -1.0 * player->getPitch() * core::DEGTORAD;
+       float yaw = (player->getYaw() + 90.) * core::DEGTORAD;
+       v3f v(cos(pitch) * cos(yaw), sin(pitch), cos(pitch) * sin(yaw));
+
+       push_v3f(L, v);
+       return 1;
+}
+
+int LuaCamera::l_get_look_horizontal(lua_State *L)
+{
+       LocalPlayer *player = getClient(L)->getEnv().getLocalPlayer();
+       sanity_check(player);
+
+       lua_pushnumber(L, (player->getYaw() + 90.) * core::DEGTORAD);
+       return 1;
+}
+
+int LuaCamera::l_get_look_vertical(lua_State *L)
+{
+       LocalPlayer *player = getClient(L)->getEnv().getLocalPlayer();
+       sanity_check(player);
+
+       lua_pushnumber(L, -1.0 * player->getPitch() * core::DEGTORAD);
+       return 1;
+}
+
+int LuaCamera::l_get_aspect_ratio(lua_State *L)
+{
+       Camera *camera = getobject(L, 1);
+       if (!camera)
+               return 0;
+       
+       lua_pushnumber(L, camera->getCameraNode()->getAspectRatio());
+       return 1;
+}
+
+LuaCamera *LuaCamera::checkobject(lua_State *L, int narg)
+{
+       luaL_checktype(L, narg, LUA_TUSERDATA);
+       
+       void *ud = luaL_checkudata(L, narg, className);
+       if (!ud)
+               luaL_typerror(L, narg, className);
+       
+       return *(LuaCamera **) ud;
+}
+
+Camera *LuaCamera::getobject(LuaCamera *ref)
+{
+       return ref->m_camera;
+}
+
+Camera *LuaCamera::getobject(lua_State *L, int narg)
+{
+       LuaCamera *ref = checkobject(L, narg);
+       assert(ref);
+       Camera *camera = getobject(ref);
+       if (!camera)
+               return NULL;
+       return camera;
+}
+
+int LuaCamera::gc_object(lua_State *L)
+{
+       LuaCamera *o = *(LuaCamera **) (lua_touserdata(L, 1));
+       delete o;
+       return 0;
+}
+
+void LuaCamera::Register(lua_State *L)
+{
+       lua_newtable(L);
+       int methodtable = lua_gettop(L);
+       luaL_newmetatable(L, className);
+       int metatable = lua_gettop(L);
+       
+       lua_pushliteral(L, "__metatable");
+       lua_pushvalue(L, methodtable);
+       lua_settable(L, metatable);
+       
+       lua_pushliteral(L, "__index");
+       lua_pushvalue(L, methodtable);
+       lua_settable(L, metatable);
+       
+       lua_pushliteral(L, "__gc");
+       lua_pushcfunction(L, gc_object);
+       lua_settable(L, metatable);
+       
+       lua_pop(L, 1);
+       
+       luaL_openlib(L, 0, methods, 0);
+       lua_pop(L, 1);
+}
+
+const char LuaCamera::className[] = "Camera";
+const luaL_reg LuaCamera::methods[] = {
+       luamethod(LuaCamera, set_camera_mode),
+       luamethod(LuaCamera, get_camera_mode),
+       luamethod(LuaCamera, get_fov),
+       luamethod(LuaCamera, get_pos),
+       luamethod(LuaCamera, get_offset),
+       luamethod(LuaCamera, get_look_dir),
+       luamethod(LuaCamera, get_look_vertical),
+       luamethod(LuaCamera, get_look_horizontal),
+       luamethod(LuaCamera, get_aspect_ratio),
+       
+       {0, 0}
+};
diff --git a/src/script/lua_api/l_camera.h b/src/script/lua_api/l_camera.h
new file mode 100644 (file)
index 0000000..82ab6a4
--- /dev/null
@@ -0,0 +1,46 @@
+#ifndef L_CAMERA_H
+#define L_CAMERA_H
+
+#include "l_base.h"
+
+class Camera;
+
+class LuaCamera : public ModApiBase {
+private: 
+
+       static const char className[];
+       static const luaL_Reg methods[];
+       
+       // garbage collector
+       static int gc_object(lua_State *L);
+       
+       static int l_set_camera_mode(lua_State *L);
+       static int l_get_camera_mode(lua_State *L);
+       
+       static int l_get_fov(lua_State *L);
+       
+       static int l_get_pos(lua_State *L);
+       static int l_get_offset(lua_State *L);
+       static int l_get_look_dir(lua_State *L);
+       static int l_get_look_vertical(lua_State *L);
+       static int l_get_look_horizontal(lua_State *L);
+       static int l_get_aspect_ratio(lua_State *L);
+       
+       Camera *m_camera;
+       
+public:
+
+       LuaCamera(Camera *m);
+       ~LuaCamera() {}
+       
+       static void create(lua_State *L, Camera *m);
+       
+       static LuaCamera *checkobject(lua_State *L, int narg);
+       static Camera *getobject(LuaCamera *ref);
+       static Camera *getobject(lua_State *L, int narg);
+       
+       static void Register(lua_State *L);
+       
+};
+
+#endif // L_CAMERA_H
index 177df55f30f5751eb5da4caab070a9ae9931c67c..7ec4eaa62c060c84e87bf15f95eff70ee1d6900e 100644 (file)
@@ -203,34 +203,6 @@ int LuaLocalPlayer::l_get_breath(lua_State *L)
        return 1;
 }
 
-int LuaLocalPlayer::l_get_look_dir(lua_State *L)
-{
-       LocalPlayer *player = getobject(L, 1);
-
-       float pitch = -1.0 * player->getPitch() * core::DEGTORAD;
-       float yaw = (player->getYaw() + 90.) * core::DEGTORAD;
-       v3f v(cos(pitch) * cos(yaw), sin(pitch), cos(pitch) * sin(yaw));
-
-       push_v3f(L, v);
-       return 1;
-}
-
-int LuaLocalPlayer::l_get_look_horizontal(lua_State *L)
-{
-       LocalPlayer *player = getobject(L, 1);
-
-       lua_pushnumber(L, (player->getYaw() + 90.) * core::DEGTORAD);
-       return 1;
-}
-
-int LuaLocalPlayer::l_get_look_vertical(lua_State *L)
-{
-       LocalPlayer *player = getobject(L, 1);
-
-       lua_pushnumber(L, -1.0 * player->getPitch() * core::DEGTORAD);
-       return 1;
-}
-
 int LuaLocalPlayer::l_get_pos(lua_State *L)
 {
        LocalPlayer *player = getobject(L, 1);
@@ -239,22 +211,6 @@ int LuaLocalPlayer::l_get_pos(lua_State *L)
        return 1;
 }
 
-int LuaLocalPlayer::l_get_eye_pos(lua_State *L)
-{
-       LocalPlayer *player = getobject(L, 1);
-
-       push_v3f(L, player->getEyePosition());
-       return 1;
-}
-
-int LuaLocalPlayer::l_get_eye_offset(lua_State *L)
-{
-       LocalPlayer *player = getobject(L, 1);
-
-       push_v3f(L, player->getEyeOffset());
-       return 1;
-}
-
 int LuaLocalPlayer::l_get_movement_acceleration(lua_State *L)
 {
        LocalPlayer *player = getobject(L, 1);
@@ -393,12 +349,7 @@ const luaL_Reg LuaLocalPlayer::methods[] = {
                luamethod(LuaLocalPlayer, get_last_look_vertical),
                luamethod(LuaLocalPlayer, get_key_pressed),
                luamethod(LuaLocalPlayer, get_breath),
-               luamethod(LuaLocalPlayer, get_look_dir),
-               luamethod(LuaLocalPlayer, get_look_horizontal),
-               luamethod(LuaLocalPlayer, get_look_vertical),
                luamethod(LuaLocalPlayer, get_pos),
-               luamethod(LuaLocalPlayer, get_eye_pos),
-               luamethod(LuaLocalPlayer, get_eye_offset),
                luamethod(LuaLocalPlayer, get_movement_acceleration),
                luamethod(LuaLocalPlayer, get_movement_speed),
                luamethod(LuaLocalPlayer, get_movement),
index 6ec3f4c09009f2a1b2723a62d8b5d9629f0cb44b..e56ec808fd6ca0b269dcdc83a43c3ba349c2e608 100644 (file)
@@ -59,15 +59,8 @@ private:
 
        static int l_get_breath(lua_State *L);
 
-       static int l_get_look_dir(lua_State *L);
-       static int l_get_look_horizontal(lua_State *L);
-       static int l_get_look_vertical(lua_State *L);
-
        static int l_get_pos(lua_State *L);
 
-       static int l_get_eye_pos(lua_State *L);
-       static int l_get_eye_offset(lua_State *L);
-
        static int l_get_movement_acceleration(lua_State *L);
 
        static int l_get_movement_speed(lua_State *L);
index 8ff5abcc4b300b628692ed85db9305e259a7634c..b5a5085be8fe3a5211253ac7c1820876d4f3d482 100644 (file)
@@ -30,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "lua_api/l_item.h"
 #include "lua_api/l_nodemeta.h"
 #include "lua_api/l_localplayer.h"
+#include "lua_api/l_camera.h"
 
 ClientScripting::ClientScripting(Client *client):
        ScriptApiBase()
@@ -71,6 +72,7 @@ void ClientScripting::InitializeModApi(lua_State *L, int top)
        LuaMinimap::Register(L);
        NodeMetaRef::RegisterClient(L);
        LuaLocalPlayer::Register(L);
+       LuaCamera::Register(L);
 }
 
 void ClientScripting::on_client_ready(LocalPlayer *localplayer)
@@ -78,3 +80,8 @@ void ClientScripting::on_client_ready(LocalPlayer *localplayer)
        lua_State *L = getStack();
        LuaLocalPlayer::create(L, localplayer);
 }
+
+void ClientScripting::on_camera_ready(Camera *camera)
+{
+       LuaCamera::create(getStack(), camera);
+}
index b3451e4097f108768e3704245c052873415c1b67..c13fde6071698ddcf0685d2434a817cd4bd2e29a 100644 (file)
@@ -28,6 +28,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 class Client;
 class LocalPlayer;
+class Camera;
 class ClientScripting:
        virtual public ScriptApiBase,
        public ScriptApiSecurity,
@@ -36,6 +37,7 @@ class ClientScripting:
 public:
        ClientScripting(Client *client);
        void on_client_ready(LocalPlayer *localplayer);
+       void on_camera_ready(Camera *camera);
 
 private:
        virtual void InitializeModApi(lua_State *L, int top);