Merge pull request #5 from CrystalPointA4/heightmap

Heightmap implemented

CrystalJohan.cpp

@@ -29,7 +29,7 @@ void CrystalJohan::draw()
 
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
-	gluPerspective(70, width / (float)height, 0.1f, 100);
+	gluPerspective(70, width / (float)height, 0.1f, 15000);
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 
@@ -52,11 +52,7 @@ void CrystalJohan::draw()
 
 	glEnd();
 
-
-
 	glutSwapBuffers();
-
-
 }
 
 
@@ -78,14 +74,15 @@ void CrystalJohan::update()
 	if (world->player.rotation.x < -90)
 		world->player.rotation.x = -90;
 
+	float speed = 20;
 
 	Vec3f oldPosition = world->player.position;
-	if (keyboardState.keys['a']) world->player.setPosition(0, deltaTime, false);
-	if (keyboardState.keys['d']) world->player.setPosition(180, deltaTime, false);
-	if (keyboardState.keys['w']) world->player.setPosition(90, deltaTime, false);
-	if (keyboardState.keys['s']) world->player.setPosition(270, deltaTime, false);
-	if (keyboardState.keys['q']) world->player.setPosition(1, deltaTime, true);
-	if (keyboardState.keys['e']) world->player.setPosition(-1, deltaTime, true);
+	if (keyboardState.keys['a']) world->player.setPosition(0, deltaTime*speed, false);
+	if (keyboardState.keys['d']) world->player.setPosition(180, deltaTime*speed, false);
+	if (keyboardState.keys['w']) world->player.setPosition(90, deltaTime*speed, false);
+	if (keyboardState.keys['s']) world->player.setPosition(270, deltaTime*speed, false);
+	if (keyboardState.keys['q']) world->player.setPosition(1, deltaTime*speed, true);
+	if (keyboardState.keys['e']) world->player.setPosition(-1, deltaTime*speed, true);
 	if (!world->isPlayerPositionValid())
 		world->player.position = oldPosition;
 

CrystalJohan.vcxproj

@@ -156,6 +156,7 @@
     <ClCompile Include="CrystalJohan.cpp" />
     <ClCompile Include="Enemy.cpp" />
     <ClCompile Include="Entity.cpp" />
+    <ClCompile Include="HeightMap.cpp" />
     <ClCompile Include="json.cpp" />
     <ClCompile Include="LevelObject.cpp" />
     <ClCompile Include="Main.cpp" />
@@ -168,6 +169,7 @@
     <ClInclude Include="CrystalJohan.h" />
     <ClInclude Include="Enemy.h" />
     <ClInclude Include="Entity.h" />
+    <ClInclude Include="HeightMap.h" />
     <ClInclude Include="json.h" />
     <ClInclude Include="LevelObject.h" />
     <ClInclude Include="Main.h" />

CrystalJohan.vcxproj.filters

@@ -48,6 +48,9 @@
     <ClCompile Include="json.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="HeightMap.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CrystalJohan.h">
@@ -86,5 +89,8 @@
     <ClInclude Include="json.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="HeightMap.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

HeightMap.cpp

@@ -0,0 +1,99 @@
+#include "HeightMap.h"
+#include "stb_image.h"
+
+#include <GL/freeglut.h>
+#include <iostream>
+#include <string>
+
+
+HeightMap::HeightMap(const std::string &file)
+{
+	int bpp;
+	unsigned char* imgData = stbi_load(file.c_str(), &width, &height, &bpp, 4);
+
+	for (int h = 0; h < height; h++)
+	{
+		for (int w = 0; w < width; w++)
+		{
+			int offsets[4][2] = { { 0, 0 },{ 1, 0 },{ 1, 1 },{ 0, 1 } };
+			for (int i = 0; i < 4; i++)
+			{
+				float y = ((float)imgData[((h + offsets[i][0]) + (w + offsets[i][1]) * width) * 4]);
+				y = (y / 256.0f) * 100.0f;
+
+				vertices.push_back(Vertex{ (float)(h + offsets[i][0])*scale, y*scale, (float)(w + offsets[i][1])*scale,
+									0, 1, 0,
+									(h + offsets[i][0]) / (float)height, (w + offsets[i][1]) / (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()
+{
+}
+
+void HeightMap::Draw()
+{
+	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*)cubeVertices.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);
+}
+
+void HeightMap::GetHeigth(float x, float z)
+{
+
+}
+
+void HeightMap::SetTexture(const std::string &file)
+{
+	int bpp, width2, height2;
+	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);
+}

HeightMap.h

@@ -0,0 +1,37 @@
+#pragma once
+#include <string>
+#include <vector>
+#include <GL/freeglut.h>
+
+class HeightMap
+{
+private:
+	int height;
+	int width;
+
+	GLuint imageIndex;
+	int scale = 1;
+public:
+	HeightMap(const std::string &file);
+	~HeightMap();
+
+	void Draw();
+	void GetHeigth(float x, float z);
+	void SetTexture(const std::string &file);
+
+	struct Vertex {
+		float x;
+		float y;
+		float z;
+
+		float normalX;
+		float normalY;
+		float normalZ;
+
+		float texX;
+		float texY;
+	};
+
+	std::vector<Vertex> vertices;
+};
+

World.cpp

@@ -11,9 +11,13 @@ World::World() : player(Player::getInstance())
 	std::ifstream file("worlds/world1.json");
 	if(!file.is_open())
 		std::cout<<"Uhoh, can't open file\n";
+
 	json::Value v = json::readJson(file);
-	std::cout<<v;
 	file.close();
+
+	heightmap = new HeightMap(v["world"]["heightmap"].asString());
+	heightmap->SetTexture(v["world"]["texture"].asString());
+
 	player.position.x = v["player"]["startposition"][0];
 	player.position.y = v["player"]["startposition"][1];
 	player.position.z = v["player"]["startposition"][2];
@@ -51,14 +55,8 @@ void World::draw()
 	float lightAmbient[4] = { 0.5, 0.5, 0.5, 1 };
 	glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient);
 
-	glColor3f(0.5f, 0.9f, 0.5f);
-	glNormal3f(0, 1, 0);
-	glBegin(GL_QUADS);
-	glVertex3f(-50, 0, -50);
-	glVertex3f(-50, 0, 50);
-	glVertex3f(50, 0, 50);
-	glVertex3f(50, 0, -50);
-	glEnd();
+	glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+	heightmap->Draw();
 
 	for (auto e : entities)
 		e->draw();

World.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <vector>
+#include "HeightMap.h"
 #include "Player.h"
 
 class Entity;
@@ -14,6 +15,7 @@ public:
 
 	Player& player;
 	std::vector<Entity*> entities;
+	HeightMap* heightmap;
 
 	void draw();
 	void update(float elapsedTime);

worlds/world1.json

@@ -1,12 +1,15 @@
 {
+   "world": {
+      "heightmap": "worlds/hmcs.png",
+	  "texture": "worlds/hmcstexture.png"
+   },
   "player": {
-    "startposition": [ 0, 1.7, 0 ]
+    "startposition": [ -100, 1.7, -100 ]
   },
   "objects": [
     {
       "file": "models/boom/Boom.obj",
-      "pos": [ 0, 0, -4 ],
-      "rot": [ 0, 20, 0 ]
+      "pos": [ 0, 0, -4 ]
     },
     {
       "file": "models/boom/Boom.obj",