Store in GIT

2026-06-17 16:06:16 +02:00
parent 0c9e91dc95
commit 6144032b88
110 changed files with 15967 additions and 0 deletions
@@ -0,0 +1,192 @@
+#include "HeightMap.h"
+#include "stb_image.h"
+#include "Vector.h"
+
+#include "LevelObject.h"
+
+#include <GL/freeglut.h>
+#include <iostream>
+#include <string>
+#include "World.h"
+
+#define RED 0
+#define GREEN 1
+#define BLUE 2
+#define ALPHA 3
+
+HeightMap::HeightMap(const std::string &file, World* world)
+{
+	int bpp;
+	unsigned char* imgData = stbi_load(file.c_str(), &width, &height, &bpp, 4);
+
+	auto heightAt = [&](int x, int y)
+	{
+		return (imgData[(x + y * width) * 4 ] / 256.0f) * 10.0f;
+	};
+
+	auto valueAt = [&](int x, int y, int offset = 0)
+	{
+		return imgData[(x + y * width) * 4 + offset];
+	};
+
+	std::vector<std::vector<Vec3f>> faceNormals(width-1, std::vector<Vec3f>(height-1, Vec3f(0,1,0)));
+	for (int y = 0; y < height - 1; y++)
+	{
+		for (int x = 0; x < width - 1; x++)
+		{
+			int offsets[4][2] = { { 0, 0 },{ 1, 0 },{ 1, 1 },{ 0, 1 } };
+			Vec3f ca(0, heightAt(x, y + 1) - heightAt(x, y), 1);
+			Vec3f ba(1, heightAt(x + 1, y) - heightAt(x, y), 0);
+			Vec3f normal = ca.cross(ba);
+			normal.Normalize();
+			faceNormals[x][y] = normal;
+		}
+	}
+
+	for (int y = 0; y < height-1; y++)
+	{
+		for (int x = 0; x < width-1; x++)
+		{
+			int offsets[4][2] = { { 0, 0 },{ 1, 0 },{ 1, 1 },{ 0, 1 } };
+
+			if (valueAt(x, y, GREEN) > 5)
+			{
+				ObjectTemplate obtp = world->getObjectFromValue(valueAt(x, y, GREEN));
+				LevelObject* p = new LevelObject(obtp.file, Vec3f(x, heightAt(x, y), y), obtp.rotation, obtp.scale, obtp.canCollide);
+
+				world->addLevelObject(p);
+			}
+			if (valueAt(x, y, BLUE) > 10)
+			{
+				world->addStar(new Star(Vec3f(x, heightAt(x, y), y)));
+			}
+
+			for (int i = 0; i < 4; i++)
+			{
+				int xx = x + offsets[i][0];
+				int yy = y + offsets[i][1];
+
+				Vec3f normal(0, 0, 0);
+				if(xx < width-1 && yy < height-1)
+					normal = normal + faceNormals[xx][yy];
+				if(xx > 0 && yy < height-1)
+					normal = normal + faceNormals[xx-1][yy];
+				if (xx > 0 && yy > 0)
+					normal = normal + faceNormals[xx-1][yy-1];
+				if (yy > 0 && xx < width-1)
+					normal = normal + faceNormals[xx][yy-1];
+				normal.Normalize();
+
+				float h = heightAt(xx, yy);
+				vertices.push_back(Vertex{ (float)(xx), h, (float)(yy),
+									normal.x, normal.y, normal.z,
+									(xx) / (float)height, (yy) / (float)width } );
+			}
+		}
+	}
+
+	glGenTextures(1, &imageIndex);
+	glBindTexture(GL_TEXTURE_2D, imageIndex);
+
+	glTexImage2D(GL_TEXTURE_2D,
+		0,					//level
+		GL_RGBA,			//internal format
+		width,				//width
+		height,				//height
+		0,					//border
+		GL_RGBA,			//data format
+		GL_UNSIGNED_BYTE,	//data type
+		imgData);			//data
+	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	stbi_image_free(imgData);
+}
+
+HeightMap::~HeightMap()
+{
+	glDeleteTextures(1, &imageIndex);
+}
+
+void HeightMap::Draw()
+{
+	glEnable(GL_LIGHTING);
+	float color[] = { 0.7f, 0.7f, 0.7f, 1 };
+	glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
+	glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
+
+	glEnable(GL_TEXTURE_2D);
+	glBindTexture(GL_TEXTURE_2D, imageIndex);
+
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	//glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_NORMAL_ARRAY);
+
+	glVertexPointer(3, GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 0);
+	glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 6);
+	glNormalPointer(GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 3);
+	glDrawArrays(GL_QUADS, 0, vertices.size());
+
+	glDisableClientState(GL_VERTEX_ARRAY);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	//glDisableClientState(GL_COLOR_ARRAY);
+	glDisableClientState(GL_NORMAL_ARRAY);
+}
+
+float HeightMap::GetHeight(float x, float y)
+{
+	int ix = x;
+	int iy = y;
+
+	int index = (ix + (width - 1) * iy) * 4;
+
+	if (index + 3 >= vertices.size())
+		index = vertices.size() - 4;
+
+	if (index < 0)
+		index = 0;
+
+	Vertex& a = vertices[index];
+	Vertex& b = vertices[index+1];
+	Vertex& c = vertices[index+3];
+
+	float lowervalue = ((b.z - c.z)*(a.x - c.x) + (c.x - b.x)*(a.z - c.z));
+	float labda1 = ((b.z - c.z)*(x - c.x) + (c.x - b.x)*(y - c.z)) / lowervalue;
+	float labda2 = ((c.y - a.y)*(x - c.x) + (a.x - c.x)*(y - c.y)) / lowervalue;
+	float labda3 = 1 - labda1 - labda2;
+
+	Vertex z = a * labda1 + b * labda2 + c * labda3;
+//	Vertex z = (a * labda1) + (b * labda2) ;
+
+	return z.y;
+}
+
+
+int HeightMap::GetSize()
+{
+	return height >= width ? height : width;
+}
+
+void HeightMap::SetTexture(const std::string &file)
+{
+	int bpp, width2, height2;
+	stbi_set_flip_vertically_on_load(true);
+	unsigned char* imgData = stbi_load(file.c_str(), &width2, &height2, &bpp, 4);
+
+	glBindTexture(GL_TEXTURE_2D, imageIndex);
+
+	glTexImage2D(GL_TEXTURE_2D,
+		0,		//level
+		GL_RGBA,		//internal format
+		width2,		//width
+		height2,		//height
+		0,		//border
+		GL_RGBA,		//data format
+		GL_UNSIGNED_BYTE,	//data type
+		imgData);		//data
+	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	stbi_image_free(imgData);
+}