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420
PhysSandbox/main.cpp
Normal file
420
PhysSandbox/main.cpp
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#include <GLUT/glut.h>
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#include <iostream>
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#include <vector>
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#define BlockSize 30
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struct Block{
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private:
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float sizeSCL = 1;
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float sidemoves = 0;
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bool isStationary = true, onBottom = false;
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public:
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// Variables
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enum Types {Sand, Water};
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float x,y;
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int id;
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Types blockType;
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// Constructors
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Block(){
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x=0;y=0;
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}
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Block(float x, float y, int id, Types blockType){
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this->x = x; this->y = y;
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this->id = id; this->blockType=blockType;
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}
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// Functions
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void Draw(){
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// just for use
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float sizeHALF = sizeSCL / 2;
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// GL Begin
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glBegin(GL_QUADS);
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// Making the CUBE
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// Left
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switch(blockType){
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case Sand:
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glColor3f(0.5f,0.5f,0);
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break;
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case Water:
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glColor3f(0,0,0.5f);
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}
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glVertex3f((x-sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, sizeHALF/BlockSize);
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glVertex3f((x-sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, -sizeHALF/BlockSize);
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glVertex3f((x-sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, -sizeHALF/BlockSize);
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glVertex3f((x-sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, sizeHALF/BlockSize);
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// Left
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glVertex3f((x+sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, -sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, -sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, sizeHALF/BlockSize);
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// Top
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glVertex3f((x-sizeHALF)/BlockSize,(y+sizeHALF)/BlockSize,-sizeHALF/BlockSize);
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glVertex3f((x-sizeHALF)/BlockSize,(y+sizeHALF)/BlockSize,sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize,(y+sizeHALF)/BlockSize,sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize,(y+sizeHALF)/BlockSize,-sizeHALF/BlockSize);
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// Front
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switch(blockType){
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case Sand:
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glColor3f(0.5f,0.5f,0);
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break;
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case Water:
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glColor4f(0,0,0.5f, 0.5f);
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}
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glVertex3f((x-sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, sizeHALF/BlockSize);
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glVertex3f((x+sizeHALF)/BlockSize, (y-sizeHALF)/BlockSize, sizeHALF/BlockSize);
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switch(blockType){
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case Sand:
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glColor3f(1.0f,1.0f,0);
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break;
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case Water:
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glColor4f(0,0,1.0f, 0.5f);
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}
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glVertex3f((x+sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, sizeHALF/BlockSize);
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glVertex3f((x-sizeHALF)/BlockSize, (y+sizeHALF)/BlockSize, sizeHALF/BlockSize);
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glEnd();
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}
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void Move(std::vector<Block> blocks){
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float sizeHALF = sizeSCL / 2;
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bool NotonBottom = (y - 1)/BlockSize > -1;
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onBottom = !NotonBottom;
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if(onBottom) {isStationary = true;}
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// If we're above the ground
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if(NotonBottom){
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// Getting all sands
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bool canMove = false;
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bool canMoveDLeft = false, canMoveDRight = false;
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bool canMoveLeft=false, canMoveRight=false;
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int bhits=0, dlhits=0, drhits=0;
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int rhits=0, lhits=0;
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for(int i = 0; i < blocks.size(); i++){
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// For the L&R movement
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// Down Moving Stops
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if(!(blockType == Sand && blocks[i].blockType == Water)){
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if(y - sizeHALF == blocks[i].y + sizeHALF && x == blocks[i].x){
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bhits++;
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}
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// Can't move down left
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if(x - sizeHALF == blocks[i].x + sizeHALF && y - sizeHALF == blocks[i].y + sizeHALF){
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dlhits++;
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}
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// Can't move down right
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if(x + sizeHALF == blocks[i].x - sizeHALF && y - sizeHALF == blocks[i].y + sizeHALF){
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drhits++;
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}
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// Can't move left
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if(x - sizeHALF == blocks[i].x + sizeHALF && y == blocks[i].y){
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lhits++;
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}
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// Can't move right
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if(x + sizeHALF == blocks[i].x - sizeHALF && y == blocks[i].y){
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rhits++;
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}
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// Sand in water
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if(blockType == Water && blocks[i].blockType == Sand){
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if(x == blocks[i].x && y == blocks[i].y){
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y += 2;
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sidemoves = 0;
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}
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}
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}
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// Move Up Because OVERLAPPING!
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if(x == blocks[i].x && y == blocks[i].y && id != blocks[i].id){
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//y+=1;
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}
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}
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canMove = bhits == 0;
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canMoveDLeft = dlhits == 0;
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canMoveDRight = drhits == 0;
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if(blockType == Water){
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canMoveLeft = lhits == 0;
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canMoveRight = rhits == 0;
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}
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isStationary = true;
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if(canMove){
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y -= 1.f;
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isStationary = false;
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sidemoves = 0;
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}
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else{
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if(canMoveDLeft){
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y -= 1.f;
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x -= 1.f;
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isStationary = false;
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sidemoves = 0;
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}
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else if(canMoveDRight){
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y -= 1.f;
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x += 1.f;
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isStationary = false;
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sidemoves = 0;
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}
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if(canMoveLeft && -sidemoves <= 0){
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x -= 1.f;
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isStationary = false;
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sidemoves++;
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}
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else if(canMoveRight && -sidemoves <= 0){
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x += 1.f;
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isStationary = false;
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sidemoves++;
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}
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}
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}
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}
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};
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std::vector<Block>blocks;
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int selectedItem = 0;
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float backgroundRot = 0;
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float looky = 0;
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float lookx = 0;
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void RecieveMouse(int button, int state, int x, int y){
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if(button == 0){
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int blockX, blockY;
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blockX = (x - 400) / (BlockSize>>1);
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blockY = (-y + 300) / (BlockSize>>1);
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Block::Types bType = Block::Sand;
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switch(selectedItem){
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case 0:
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bType = Block::Sand;
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blocks.push_back(Block(blockX, blockY + 2, blocks.size(), Block::Sand ));
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blocks.push_back(Block(blockX, blockY, blocks.size(), Block::Sand ));
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blocks.push_back(Block(blockX, blockY - 2, blocks.size(), Block::Sand ));
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break;
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case 1:
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bType = Block::Water;
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blocks.push_back(Block(blockX, blockY + 2, blocks.size(), Block::Water ));
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break;
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}
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std::cout << "Mouse Position = " << blockX << ", " << blockY << "\n";
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}
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}
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void KeyboardRecieved(unsigned char key, int x, int y){
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std::cout << "Key Pressed: " << key << "\n";
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if(key == '1'){
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selectedItem = 0;
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}
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else if(key == '2'){
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selectedItem = 1;
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}
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float turnspeed = 0.5f;
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if(key == 'w'){
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looky += turnspeed;
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}
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else if(key == 's'){
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looky -= turnspeed;
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}
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else{
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}
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if(key == 'd'){
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lookx += turnspeed;
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}
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else if(key == 'a'){
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lookx -= turnspeed;
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}
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else{
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}
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}
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void Display(){
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// Clearing
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glMatrixMode(GL_MODELVIEW);
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// new Object
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glLoadIdentity();
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glTranslatef(0, 0, -3.0f);
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// Looking
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gluLookAt(0, 0, 0, (GLdouble)lookx, 0, -3.0f, 0, 1, 0);
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// Drawing sand
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for(int i = 0; i < blocks.size(); i++){
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blocks[i].Draw();
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}
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// Drawing the used item text
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std::string itemText;
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switch(selectedItem){
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case 0:
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itemText = "Sand";
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break;
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case 1:
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itemText = "Water";
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}
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glColor3f(1,1,1);
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glRasterPos2f(-0.75f, 0.75f);
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for(int i = 0; i < itemText.size(); i++){
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glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, itemText[i]);
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}
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glLoadIdentity();
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// Looking
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gluLookAt(0, 0, 0, (GLdouble)lookx, 0, -6.0f, 0, 1, 0);
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glTranslatef(0.0f, -0.2f, -3.0f);
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glRotatef(backgroundRot, 0, 1, 0);
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glBegin(GL_TRIANGLES);
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float size = 0.05f;
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// Front
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glColor3f(1,1,0);
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glVertex3f(0,size,0);
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glColor3f(0,0,0);
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glVertex3f(size,-size,size);
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glColor3f(0,0,0);
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glVertex3f(-size,-size,size);
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// Left
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glColor3f(1,1,0);
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glVertex3f(0,size,0);
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glColor3f(0,0,0);
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glVertex3f(-size,-size,-size);
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glColor3f(0,0,0);
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glVertex3f(-size,-size,size);
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// Back
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glColor3f(1,1,0);
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glVertex3f(0,size,0);
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glColor3f(0,0,0);
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glVertex3f(size,-size,-size);
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glColor3f(0,0,0);
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glVertex3f(-size,-size,-size);
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// Right
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glColor3f(1,1,0);
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glVertex3f(0,size,0);
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glColor3f(0,0,0);
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glVertex3f(size,-size,-size);
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glColor3f(0,0,0);
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glVertex3f(size,-size,size);
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glEnd();
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// Passing
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glutSwapBuffers();
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}
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void ReShape(GLsizei width, GLsizei height){
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// Fixing thing
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if(height == 0) height = 1;
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// Making Aspect
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GLfloat aspect = (GLfloat)width / (GLfloat)height;
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// Setting the viewport
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glViewport(0, 0, width, height);
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// Matrixing
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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// Perception
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gluPerspective(45.0f, aspect, 0.1f, 100.0f);
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}
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void timer(int){
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glutPostRedisplay();
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glutTimerFunc(1000/60, timer, 0);
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// Code here
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for(int i = 0; i < blocks.size(); i++){
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blocks[i].Move(blocks);
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}
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// Background
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backgroundRot += 0.8f;
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if(backgroundRot > 360) backgroundRot -= 360;
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if(backgroundRot < 0 ) backgroundRot += 360;
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}
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void Start(){
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// GL Init
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glClearColor(0, 0, 0, 1);
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glClearDepth(1.0f);
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glEnable(GL_DEPTH_TEST);
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glDepthFunc(GL_LEQUAL);
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glShadeModel(GL_SMOOTH);
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glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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}
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// Application
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int main(int argc, char** argv){
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// Initilizing GLUT
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
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// Window
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glutInitWindowPosition(50, 50);
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glutInitWindowSize(800, 600);
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glutCreateWindow("Physics Sandbox");
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// Making extras
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glutDisplayFunc(Display);
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glutReshapeFunc(ReShape);
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glutMouseFunc(RecieveMouse);
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glutKeyboardFunc(KeyboardRecieved);
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glutTimerFunc(0, timer, 0);
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Start();
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// Game Loop
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glutMainLoop();
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// Exit
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return 0;
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}
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20
README.md
20
README.md
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@ -1,3 +1,21 @@
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# Physics-Sandbox
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A 2D physics simulator for MacOS
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This was made for Mac, With C++, Using GLUT ( OpenGL Utility Toolkit )
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It was Extreamly helpful using OpenGL to create 2d and 3d graphics.
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# Downloading the source
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### If you're not on a mac
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* Download Any IDE
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* Copy the main.cpp from the repo
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* Compile using any prefered librarries
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### If you're using a mac
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* Clone the repo:
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- *git clone https://github.com/Maddox-Werts/Physics-Sandbox.git*
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* Open the ***.xcodeproj*** file.
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I belive that's it if you're using a mac,
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Just open Main.cpp, click run and BAM!
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If it's not working, try going into the add frameworks
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page, add a framework for OpenGL and GLUT and you're done!
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