Improve compiler compatibility (#743)

* fix returns

* use standard C headers

* struct/class mismatch

* explicit this in template

* switch variable scope

* C standard compliance

* & l-value

3 files changed, 32 insertions, 32 deletions

diff --git a/include/JSystem/J3DGraphLoader/J3DAnmLoader.h b/include/JSystem/J3DGraphLoader/J3DAnmLoader.h
index a97bf995..5199d4d9 100644
--- a/include/JSystem/J3DGraphLoader/J3DAnmLoader.h
+++ b/include/JSystem/J3DGraphLoader/J3DAnmLoader.h
@@ -7,29 +7,29 @@ enum J3DAnmLoaderDataBaseFlag { J3DLOADER_UNK_FLAG0 };
 
 class J3DAnmBase;
 class J3DAnmClusterFull;
-class J3DAnmClusterFullData;
+struct J3DAnmClusterFullData;
 class J3DAnmClusterKey;
-class J3DAnmClusterKeyData;
+struct J3DAnmClusterKeyData;
 class J3DAnmColorFull;
-class J3DAnmColorFullData;
+struct J3DAnmColorFullData;
 class J3DAnmColorKey;
-class J3DAnmColorKeyData;
+struct J3DAnmColorKeyData;
 class J3DAnmTevRegKey;
-class J3DAnmTevRegKeyData;
+struct J3DAnmTevRegKeyData;
 class J3DAnmTexPattern;
-class J3DAnmTexPatternFullData;
+struct J3DAnmTexPatternFullData;
 class J3DAnmTextureSRTKey;
-class J3DAnmTextureSRTKeyData;
+struct J3DAnmTextureSRTKeyData;
 class J3DAnmTransformFull;
-class J3DAnmTransformFullData;
+struct J3DAnmTransformFullData;
 class J3DAnmTransformKey;
-class J3DAnmTransformKeyData;
+struct J3DAnmTransformKeyData;
 class J3DAnmVisibilityFull;
-class J3DAnmVisibilityFullData;
+struct J3DAnmVisibilityFullData;
 class J3DAnmVtxColorFull;
-class J3DAnmVtxColorFullData;
+struct J3DAnmVtxColorFullData;
 class J3DAnmVtxColorKey;
-class J3DAnmVtxColorKeyData;
+struct J3DAnmVtxColorKeyData;
 
 struct J3DAnmLoaderDataBase {
     static J3DAnmBase* load(const void*);
diff --git a/include/JSystem/J3DGraphLoader/J3DMaterialFactory.h b/include/JSystem/J3DGraphLoader/J3DMaterialFactory.h
index 8b6c52c6..d97cb003 100644
--- a/include/JSystem/J3DGraphLoader/J3DMaterialFactory.h
+++ b/include/JSystem/J3DGraphLoader/J3DMaterialFactory.h
@@ -11,7 +11,7 @@ struct J3DMaterialDLBlock;
 struct J3DMaterialInitData;
 struct J3DIndInitData;
 struct J3DColorChanInfo;
-struct J3DLightInfo;
+class J3DLightInfo;
 struct J3DTexCoordInfo;
 struct J3DTexCoord2Info;
 struct J3DTexMtxInfo;
@@ -24,13 +24,13 @@ struct J3DAlphaCompInfo;
 struct J3DBlendInfo;
 struct J3DZModeInfo;
 struct J3DNBTScaleInfo;
-struct J3DCurrentMtxInfo;
+class J3DCurrentMtxInfo;
 
 struct J3DColorChan;
 struct J3DGXColor;
 struct J3DGXColorS10;
 struct J3DTexCoord;
-struct J3DTexMtx;
+class J3DTexMtx;
 struct J3DTevOrder;
 struct J3DTevStage;
 struct J3DTevSwapMode;
diff --git a/include/JSystem/J3DGraphLoader/J3DMaterialFactory_v21.h b/include/JSystem/J3DGraphLoader/J3DMaterialFactory_v21.h
index e1113eca..d4154791 100644
--- a/include/JSystem/J3DGraphLoader/J3DMaterialFactory_v21.h
+++ b/include/JSystem/J3DGraphLoader/J3DMaterialFactory_v21.h
@@ -7,24 +7,24 @@
 
 class J3DMaterial;
 struct J3DMaterialBlock_v21;
-class J3DMaterialInitData_v21;
-class J3DIndInitData;
-class J3DColorChanInfo;
+struct J3DMaterialInitData_v21;
+struct J3DIndInitData;
+struct J3DColorChanInfo;
 class J3DLightInfo;
-class J3DTexCoordInfo;
-class J3DTexCoord2Info;
-class J3DTexMtxInfo;
-class J3DTevOrderInfo;
-class J3DTevStageInfo;
-class J3DTevSwapModeInfo;
-class J3DTevSwapModeTableInfo;
-class J3DFogInfo;
-class J3DAlphaCompInfo;
-class J3DBlendInfo;
-class J3DZModeInfo;
-class J3DNBTScaleInfo;
-class J3DDisplayListInit;
-class J3DPatchingInfo;
+struct J3DTexCoordInfo;
+struct J3DTexCoord2Info;
+struct J3DTexMtxInfo;
+struct J3DTevOrderInfo;
+struct J3DTevStageInfo;
+struct J3DTevSwapModeInfo;
+struct J3DTevSwapModeTableInfo;
+struct J3DFogInfo;
+struct J3DAlphaCompInfo;
+struct J3DBlendInfo;
+struct J3DZModeInfo;
+struct J3DNBTScaleInfo;
+struct J3DDisplayListInit;
+struct J3DPatchingInfo;
 class J3DCurrentMtxInfo;
 
 struct J3DMaterialInitData_v21 {