First blood

include/SimpleLand/SimpleLand.h

@@ -0,0 +1,142 @@
+#ifndef SIMPLE_LAND_H_INCLUDED
+#define SIMPLE_LAND_H_INCLUDED
+
+#include "include/Utils/Utils.h"
+
+namespace SE
+{
+
+const int CONST_DEFAULT_LAND_WIDTH = 16;
+const int CONST_DEFAULT_LAND_HEIGHT = 16;
+const float CONST_DEFAULT_LAND_CELL_INVERVAL = 2.0f;
+
+const float CONST_LAND_MOVE_STEP = 0.3f;
+
+
+//Struct for one land vertex
+struct TSimpleLandVertex 
+{
+	vec3 pos;		//Vertex position (x,y,z)
+	vec3 norm;		//Vertex normal vector
+	vec3 tangent;	//Vertex tangent vector
+	vec3 binorm;	//Vertex binormal vector
+	int landtype;	//Vertex type - not in use right now
+};
+
+struct TVBOLandVertex
+{
+	std::vector<vec3> pos;		//Vertex position (x,y,z)
+	std::vector<vec3> norm;		//Vertex normal vector
+	std::vector<vec3> tangent;	//Vertex tangent vector
+	std::vector<vec3> binorm;	//Vertex binormal vector
+	std::vector<vec2> texCoord;  //Vertex texture coords
+};
+
+//Land triangle
+struct TLandSimpleTriangle
+{
+	vec3 PointList[3];	//3 vertices
+	vec3 NormVec;		//Normal vector (not for draw, but for physics/collision)
+};
+
+//Land class
+class TSimpleLandClass
+{
+private:
+	
+	int Width; //Number of vertices along X
+	int Height; //Number of vertices along -Z
+	float CellInterval; //Distance between vertices
+
+	std::vector<TSimpleLandVertex> VertexMatrix;
+	std::vector<TLandSimpleTriangle> TriangleMatrix;
+	
+	//Textures:
+	cardinal TexID;
+	cardinal NormTexID;
+
+	//For VBO:
+	std::vector<word> IndexArr;
+	TVBOLandVertex VBOLandVertexArr;
+
+	cardinal IndexBuffer;
+	cardinal VertexBuffer;
+	cardinal NormBuffer;
+	cardinal TangentBuffer;
+	cardinal BinormBuffer;
+	cardinal TexcoordBuffer;
+
+	void CreateVBO();
+	void FreeVBO();
+
+	void UpdateVBO();
+	void UpdateTriangleMatrix();
+
+
+	vec3 CalcCrossingForPoint(const vec3& lineFrom, const vec3& lineTo, int i, int j);
+	vec3 CalcCrossingForPoint(const vec3& pos, int i, int j);
+public:
+	
+	TSimpleLandClass(); 
+
+	~TSimpleLandClass(); 
+
+	bool LoadFromFile(const std::string& filename);
+	//Load land struct from ls1 file
+
+	void SaveToFile(char* filename); //Xperimental. Not in use right now
+
+	void SetTexture(const std::string& texFilename);
+	//Set land texture name
+
+	void SetNormTexture(const std::string& normTexFilename);
+	//Set land texture name
+
+	void DrawImmediate(); //Very sloooow. Need to speed up!
+	//Draw land immediate
+
+	void DrawVBO();
+
+	vec3 CalcCrossing(vec3 LineFrom, vec3 LineTo);
+	//Calculate intersection (segment LiteFrom -> LineTo and the land)
+
+	vec3 CalcVerticalCrossing(const vec3& pos);
+	//Calculate land height on (pos.x, pos.y)
+
+	float CalcVerticalCrossingFast(const vec3& pos);
+	//Calculate approximate land height on (pos.x, pos.y)
+
+	bool IsOnTheLand(const vec3& pos);
+
+	void RecalcNormalVectors();
+	//Recalc normal vectors - must be called after land is modified
+
+	void MoveLandUp(vec3 CursorPos, float R);//NIU
+	//Move land up under cursor
+
+	void MoveLandDown(vec3 CursorPos, float R);//NIU
+	//Move land down under cursor
+
+	void SmoothLand(vec3 CursorPos, float R);//NIU
+	//Smooth land up under cursor
+
+	void TextureLand(vec3 CursorPos, float R, int ltype);//NIU
+	//Set land type under cursor
+
+	void Scale(float s);
+
+	void Scale(vec3 s);
+
+	void Move(const vec3& v);
+
+	int GetWidth();
+
+	int GetHeight();
+	
+	float* GetTriangleMatrix();
+	//Use it for physics only!
+};
+
+} //namespace SE
+
+#endif