Create Matrix function headers in C

src/Client/D3D9Api.c

@@ -2,6 +2,7 @@
 #include "GraphicsAPI.h"
 #include "D3D9Api.h"
 #include "ErrorHandler.h"
+#include "GraphicsEnums.h"
 
 #define USE_DX true
 #ifdef USE_DX
@@ -166,18 +167,44 @@ void Gfx_SetDepthWrite(bool enabled) {
 }
 
 
-*Sets the matrix type that load / push / pop operations should be applied to. * /
-void Gfx_SetMatrixMode(Int32 matrixType);
+void Gfx_SetMatrixMode(Int32 matrixType) {
+	if (matrixType == MatrixType_Projection) {
+		curStack = &projStack;
+	} else if (matrixType == MatrixType_Modelview) {
+		curStack = &viewStack;
+	} else if (matrixType == MatrixType_Texture) {
+		curStack = &texStack;
+	}
+}
 
-/* Sets the current matrix to the given matrix.*/
-void Gfx_LoadMatrix(Matrix* matrix);
+void Gfx_LoadMatrix(Matrix* matrix) {
+	if (curStack == &texStack) {
+		matrix->Row2.X = matrix->Row3.X; // NOTE: this hack fixes the texture movements.
+		IDirect3DDevice9_SetTextureStageState(device, 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);
+	}
 
-/* Sets the current matrix to the identity matrix. */
-void Gfx_LoadIdentityMatrix();
+	Int32 idx = curStack->Index;
+	curStack->Stack[idx] = *matrix;
+	
+	ReturnCode hresult = IDirect3DDevice9_SetTransform(device, curStack->Type, &curStack->Stack[idx]);
+	ErrorHandler_CheckOrFail(hresult, "D3D9_LoadMatrix");
+}
 
-/* Multiplies the current matrix by the given matrix, then
-sets the current matrix to the result of the multiplication. */
-void Gfx_MultiplyMatrix(Matrix* matrix);
+void Gfx_LoadIdentityMatrix() {
+	if (curStack == &texStack) {
+		IDirect3DDevice9_SetTextureStageState(device, 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
+	}
+
+	Int32 idx = curStack->Index;
+	curStack->Stack[idx] = *matrix;
+
+	ReturnCode hresult = IDirect3DDevice9_SetTransform(device, curStack->Type, &curStack->Stack[idx]);
+	ErrorHandler_CheckOrFail(hresult, "D3D9_LoadIdentityMatrix");
+}
+
+void Gfx_MultiplyMatrix(Matrix* matrix) {
+	curStack.MultiplyTop(ref matrix);
+}
 
 void Gfx_PushMatrix() {
 	Int32 idx = curStack->Index;
@@ -195,6 +222,7 @@ void Gfx_PopMatrix() {
 		ErrorHandler_Fail("Unable to pop matrix, at 0 already");
 	}
 
+	D3DMATRIX m;
 	curStack->Index--; idx--;
 	ReturnCode hresult = IDirect3DDevice9_SetTransform(device, curStack->Type, &curStack->Stack[idx]);
 	ErrorHandler_CheckOrFail(hresult, "D3D9_PopMatrix");

src/Client/EventHandler.c

@@ -7,7 +7,7 @@ void EventHandler_Register(void** handlers, Int32* count, void* handler) {
 	}
 
 	if (*count == EventHandler_Size) {
-		ErrorHandler_Fail("Unable to add another event handler"));
+		ErrorHandler_Fail("Unable to add another event handler");
 	}
 	handlers[*count] = handler;
 	*count++;

src/Client/GraphicsCommon.c

@@ -19,7 +19,7 @@ void GfxCommon_LoseContext(String reason) {
 	Platform_Log(String_FromConstant("Lost graphics context:"));
 	Platform_Log(reason);
 
-	EventHandler_Call_Void(Gfx_ContextLost, Gfx_ContextLostCount);
+	EventHandler_Raise_Void(Gfx_ContextLost, Gfx_ContextLostCount);
 	GfxCommon_Free();
 }
 
@@ -27,7 +27,7 @@ void GfxCommon_RecreateContext() {
 	Gfx_LostContext = false;
 	Platform_Log(String_FromConstant("Recreating graphics context"));
 
-	EventHandler_Call_Void(Gfx_ContextRecreated, Gfx_ContextRecreatedCount);
+	EventHandler_Raise_Void(Gfx_ContextRecreated, Gfx_ContextRecreatedCount);
 	GfxCommon_Init();
 }
 

src/Client/Matrix.c

@@ -2,4 +2,4 @@
 
 Vector4 Vector4_Create4(Real32 x, Real32 y, Real32 z, Real32 w) {
 	Vector4 v; v.X = x; v.Y = y; v.Z = z; v.W = w; return v;
-}
+}

src/Client/Matrix.h

@@ -1,6 +1,7 @@
 #ifndef CS_MATRIX_H
 #define CS_MATRIX_H
 #include "Typedefs.h"
+#include "Vectors.h"
 /* Represents a 4 by 4 matrix.
    Copyright 2017 ClassicalSharp | Licensed under BSD-3
 */
@@ -30,4 +31,47 @@ typedef struct Matrix {
 	/* Bottom row of the matrix */
 	Vector4 Row3;
 } Matrix;
+
+/* Identity matrix. */
+Matrix Matrix_Identity = {
+	1.0f, 0.0f, 0.0f, 0.0f,
+	0.0f, 1.0f, 0.0f, 0.0f,
+	0.0f, 0.0f, 1.0f, 0.0f,
+	0.0f, 0.0f, 0.0f, 1.0f
+};
+
+
+/* Transformation matrix representing rotation angle radians around X axis. */
+void Matrix_RotateX(Real32 angle, Matrix* result);
+
+/* Transformation matrix representing rotation angle radians around Y axis. */
+void Matrix_RotateY(Real32 angle, Matrix* result);
+
+/* Transformation matrix representing rotation angle radians around Z axis. */
+void Matrix_RotateZ(Real32 angle, Matrix* result);
+
+/* Transformation matrix representing translation of given coordinates. */
+void Matrix_Translate(Real32 x, Real32 y, Real32 z, Matrix* result);
+
+/* Transformation matrix representing scaling of given axes. */
+void Matrix_Scale(Real32 x, Real32 y, Real32 z, Matrix* result);
+
+/* Multiplies two matrices.*/
+void Matrix_Mul(Matrix* left, Matrix* right, Matrix* result);
+
+
+/* Transformation matrix representing orthographic projection. */
+void Matrix_Orthographic(Real32 width, Real32 height, Real32 zNear, Real32 zFar, Matrix* result);
+
+/* Transformation matrix representing orthographic projection. */
+void Matrix_OrthographicOffCenter(Real32 left, Real32 right, Real32 bottom, Real32 top, Real32 zNear, Real32 zFar, Matrix* result);
+
+/* Transformation matrix representing perspective projection. */
+void Matrix_PerspectiveFieldOfView(Real32 fovy, Real32 aspect, Real32 zNear, Real32 zFar, Matrix* result);
+
+/* Transformation matrix representing perspective projection. */
+void Matrix_PerspectiveOffCenter(Real32 left, Real32 right, Real32 bottom, Real32 top, Real32 zNear, Real32 zFar, Matrix* result);
+
+/* Transformation matrix representing camera look at. */
+void Matrix_LookAt(Vector3 eye, Vector3 target, Vector3 up, Matrix* result);
 #endif

src/Client/World.c

@@ -17,7 +17,7 @@ void World_SetNewMap(BlockID* blocks, Int32 blocksSize, Int32 width, Int32 heigh
 	if (World_BlocksSize == 0) World_Blocks = NULL;
 
 	if (blocksSize != (width * height * length)) {
-		ErrorHandler_Fail(String_FromConstant("Blocks array size does not match volume of map."));
+		ErrorHandler_Fail("Blocks array size does not match volume of map");
 	}
 
 	if (WorldEnv_EdgeHeight == -1) {