+#include <cstdio> // fopen
+#include <chrono> // see millis()
+
#include <common.h>
#include <world.h>
#include <ui.h>
#include <entities.h>
-#include <cstdio>
-#include <chrono>
-#define TICKS_PER_SEC 20
-#define MSEC_PER_TICK (1000/TICKS_PER_SEC)
+#define TICKS_PER_SEC 20 // The amount of game ticks that should occur in one second
+#define MSEC_PER_TICK (1000/TICKS_PER_SEC) // The amount of milliseconds there should be between ticks
-SDL_Window *window = NULL;
-SDL_Surface *renderSurface = NULL;
+SDL_Window *window = NULL; // The game's window
SDL_GLContext mainGLContext = NULL;
static GLuint bgImage;
-bool gameRunning = true;
+bool gameRunning = true; // The game will exit if this is false
+
+World *currentWorld=NULL; // A pointer to the world that the player is currently in
+Player *player; // The player
+
+std::vector<Entity*>entity; // An array of all entities in existance
+std::vector<NPC>npc; // An array of all NPCs in existance (entries in `entity` point to these)
+std::vector<Structures *>build; // An array of all Structures in existance (entries in `entity` point to these)
+std::vector<Mob>mob; // An array of all Mobs in existance (entries in `entity` point to these)
-World *currentWorld=NULL;
-Player *player;
+unsigned int tickCount = 0, // The amount of generated ticks since the game entered the main loop
+ deltaTime = 0; // Used for frame regulation / smooth animation n' stuff
-std::vector<Entity*>entity;
-std::vector<NPC>npc;
-std::vector<Structures *>build;
-std::vector<Mob>mob;
+int mx, my; // The mouse's coordinates in the window
-int mx, my;
-FILE* names;
+FILE *names; // A pointer to the file containing possible NPC names
Mix_Music *music;
Mix_Chunk *horn;
-unsigned int loops = 0;
+unsigned int loops = 0; // Used for texture animation
-extern void initEverything(void);
+extern void initEverything(void); // Sets up the worlds and NPCs, see gameplay.cpp
-void logic();
-void render();
-void mainLoop(void);
+void logic(); // Handles entity logic and input events
+void render(); // Draws everything to the screen
+void mainLoop(void); // Runs render() and logic()
+// Used for millisecond timing
unsigned int millis(void){
std::chrono::system_clock::time_point now=std::chrono::system_clock::now();
return std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count();
atexit(IMG_Quit);
//Initialize SDL_mixer
- if( Mix_OpenAudio( 44100, MIX_DEFAULT_FORMAT, 2, 2048 ) < 0 ){
+ if(Mix_OpenAudio( 44100, MIX_DEFAULT_FORMAT, 2, 2048) < 0){
std::cout << "SDL_mixer could not initialize! SDL_mixer Error: " << Mix_GetError() << std::endl;
}
atexit(Mix_Quit);
- // Turn on double buffering
+ // Enable double buffering
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// Create the window
window = SDL_CreateWindow("Independent Study v.0.2 alpha", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL
- #ifdef FULLSCREEN
- | SDL_WINDOW_FULLSCREEN
- #endif // FULLSCREEN
+#ifdef FULLSCREEN
+ | SDL_WINDOW_FULLSCREEN
+#endif // FULLSCREEN
);
if(window==NULL){
std::cout << "The window failed to generate! Error: " << SDL_GetError() << std::endl;
std::cout << "Window address: "<<window<<std::endl;
return -1;
}
- //set OpenGL context
- mainGLContext = SDL_GL_CreateContext(window);
- if(mainGLContext == NULL){
+ // Set OpenGL context
+ if((mainGLContext = SDL_GL_CreateContext(window)) == NULL){
std::cout << "The OpenGL context failed to initialize! Error: " << SDL_GetError() << std::endl;
return -1;
}
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
SDL_ShowCursor(SDL_DISABLE); // Hide mouse cursor so we can draw our own
- //************************************************************************//
- // WORLD GENERATION STUFF //
- //************************************************************************//
-
names = fopen("assets/names_en-us", "r+"); // Open the names file
initEverything(); // Run world maker thing in src/gameplay.cpp
- /**************************
- **** GAMELOOP ****
- **************************/
-
//Load music
music = Mix_LoadMUS("assets/BennyHillTheme.wav");
horn = Mix_LoadWAV("assets/air-horn-club-sample_1.wav");
Mix_VolumeMusic(15);
Mix_PlayMusic( music, -1 );
- bgImage=loadTexture("assets/bg.png");
+ bgImage=loadTexture("assets/bg.png"); // Load a background image
- initInventorySprites();
+ initInventorySprites(); // Load sprites used for items and the inventory
+
+ /**************************
+ **** GAMELOOP ****
+ **************************/
while(gameRunning){
mainLoop();
}
/**************************
- **** CLOSE PROGRAM ****
+ **** CLOSE PROGRAM ****
**************************/
- //closes the window and frees resources
+ // Close the window and free resources
fclose(names);
SDL_GL_DeleteContext(mainGLContext);
SDL_DestroyWindow(window);
static unsigned int fps=0;
static float debugY=0;
-unsigned int deltaTime=0;
-
void mainLoop(void){
static unsigned int debugDiv=0;
- static unsigned int tickCount = 0,
- prevTime = 0,
- currentTime = 0,
- deltatime = 0;
- unsigned int i;
+ unsigned int i,
+ prevTime = 0,
+ currentTime = 0;
if(!currentTime)currentTime=millis();
prevTime = currentTime;
currentTime = millis();
- deltatime = currentTime - prevTime;
- deltaTime = deltatime;
-
+ deltaTime = currentTime - prevTime;
+
if(prevTime + MSEC_PER_TICK >= millis()){
logic();
prevTime = millis();
}
- player->loc.y+=player->vel.y*deltatime;
- player->loc.x+=(player->vel.x*player->speed)*deltatime;
+ player->loc.y+=player->vel.y*deltaTime;
+ player->loc.x+=(player->vel.x*player->speed)*deltaTime;
for(int i=0;i<=entity.size();i++){
- entity[i]->loc.x += entity[i]->vel.x * deltatime;
- entity[i]->loc.y += entity[i]->vel.y * deltatime;
+ entity[i]->loc.x += entity[i]->vel.x * deltaTime;
+ entity[i]->loc.y += entity[i]->vel.y * deltaTime;
if(entity[i]->vel.x<0)entity[i]->left=true;
if(entity[i]->vel.x>0)entity[i]->left=false;
}
if(++debugDiv==20){
- fps=1000/deltatime;
+ fps=1000/deltaTime;
debugDiv=0;
}else if(!(debugDiv%10)){
debugY = player->loc.y;
}
+ mx = (ui::mouse.x+player->loc.x) - (SCREEN_WIDTH/2);
+ my = SCREEN_HEIGHT - ui::mouse.y;
+
render();
}
**** RENDER STUFF HERE ****
**************************/
- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D,bgImage);
- glBegin(GL_QUADS);
- glTexCoord2i(0,1);glVertex2i(-SCREEN_WIDTH*2,0);
- glTexCoord2i(1,1);glVertex2i( SCREEN_WIDTH*2,0);
- glTexCoord2i(1,0);glVertex2i( SCREEN_WIDTH*2,SCREEN_HEIGHT);
- glTexCoord2i(0,0);glVertex2i(-SCREEN_WIDTH*2,SCREEN_HEIGHT);
- glEnd();
- glDisable(GL_TEXTURE_2D);
+ glEnable(GL_TEXTURE_2D); // Draw the background image
+ glBindTexture(GL_TEXTURE_2D,bgImage); //
+ glBegin(GL_QUADS); //
+ glTexCoord2i(0,1);glVertex2i(-SCREEN_WIDTH*2,0); //
+ glTexCoord2i(1,1);glVertex2i( SCREEN_WIDTH*2,0); //
+ glTexCoord2i(1,0);glVertex2i( SCREEN_WIDTH*2,SCREEN_HEIGHT); //
+ glTexCoord2i(0,0);glVertex2i(-SCREEN_WIDTH*2,SCREEN_HEIGHT); //
+ glEnd(); //
+ glDisable(GL_TEXTURE_2D); //
- player->near=true;
+ player->near=true; // Ensure the player's name is always drawn
currentWorld->draw(player); // Draw the world & the player
- glColor3ub(255,255,255);
- player->inv->draw();
+ glColor3ub(255,255,255); // Draw the player's inventory
+ player->inv->draw(); //
- ui::draw(); // Draw any UI elements if they need to be
+ ui::draw(); // Draw any UI elements if they need to be
- if(ui::debug){
+ if(ui::debug){ // Draw the debug screen if it has been enabled
ui::setFontSize(16);
ui::putText(player->loc.x-SCREEN_WIDTH/2,SCREEN_HEIGHT-ui::fontSize,"FPS: %d\nG:%d\nRes: %ux%u\nE: %d\nPOS: (x)%+.2f\n (y)%+.2f\nQc: %u",
fps,player->ground,SCREEN_WIDTH,SCREEN_HEIGHT,entity.size(),player->loc.x,debugY,player->qh.current.size());
}
+
+ glColor3ub(255,255,255); // Draw the mouse
+ glBegin(GL_TRIANGLES); //
+ glVertex2i(mx,my); //
+ glVertex2i(mx+HLINE*3.5,my); //
+ glVertex2i(mx,my-HLINE*3.5); //
+ glEnd(); //
/**************************
- **** CLOSE THE LOOP ****
+ **** END RENDERING ****
**************************/
- mx = ui::mouse.x + player->loc.x;
- my = ui::mouse.y;
- my = SCREEN_HEIGHT - my;
- mx -= (SCREEN_WIDTH/2);
- glColor3ub(255,255,255);
- glBegin(GL_TRIANGLES);
- glVertex2i(mx,my);
- glVertex2i(mx+HLINE*3.5,my);
- glVertex2i(mx,my-HLINE*3.5);
- glEnd();
glPopMatrix(); //take the matrix(s) off the stack to pass them to the renderer
SDL_GL_SwapWindow(window); //give the stack to SDL to render it
}
void logic(){
- ui::handleEvents();
- currentWorld->detect(player);
- //loops through whole entity stack
- for(int i=0;i<=entity.size();i++){
- //only loops through entities that are alive
- if(entity[i]->alive){
- //only loops through entities with type NPCT
- if(entity[i]->type == NPCT){
- entity[i]->wander((rand()%120 + 30), &entity[i]->vel); //makes the villager wander
- //makes sure the entity is close to the player, and the mouse cursor is over the NPC
- if( pow((entity[i]->loc.x - player->loc.x),2) + pow((entity[i]->loc.y - player->loc.y),2) <= pow(40*HLINE,2)){
- if(mx >= entity[i]->loc.x && mx <= entity[i]->loc.x + entity[i]->width && my >= entity[i]->loc.y && my <= entity[i]->loc.y + entity[i]->width){
- entity[i]->near=true; //sets near to true so we can toggle names later
+ ui::handleEvents(); // Handle keyboard / mouse input
+ currentWorld->detect(player); // Handle gravity and world bounds
+
+ for(int i=0;i<=entity.size();i++){ // Loop through the whole entity stack
+ if(entity[i]->alive){ // If the entity is alive
+ switch(entity[i]->type){
+ case NPCT: // Handle NPCs
+
+ entity[i]->wander((rand()%120 + 30), &entity[i]->vel); // Make the NPC wander
+
+ // Check if the NPC is near the player and handle potential interaction
+ if(pow((entity[i]->loc.x - player->loc.x),2) + pow((entity[i]->loc.y - player->loc.y),2) <= pow(40*HLINE,2)){
+ if(mx >= entity[i]->loc.x && mx <= entity[i]->loc.x + entity[i]->width &&
+ my >= entity[i]->loc.y && my <= entity[i]->loc.y + entity[i]->width){
+ entity[i]->near=true; // Allows the NPC's name to be drawn
if(SDL_GetMouseState(NULL, NULL)&SDL_BUTTON(SDL_BUTTON_RIGHT)){
- entity[i]->interact(); //interacts with the NPCS
- //std::cout <<"["<<i<<"] -> "<< entity[i]->name << ", " << (std::string)(entity[i]->gender == MALE ? "Male" : "Female") << std::endl;
+ entity[i]->interact(); // Interact with the player
//Mix_PlayChannel( -1, horn, 0);
}
}else entity[i]->near=false;
}
- }if(entity[i]->type == MOBT){
- entity[i]->wander((rand()%240 + 15),&entity[i]->vel);
+ break;
+ case MOBT: // Handle mobs
+ entity[i]->wander((rand()%240 + 15),&entity[i]->vel); // Make the mob wander
+ break;
+ default:
+ break;
}
}
}
loops++;
-}
\ No newline at end of file
+}
projects / clyne / gamedev.git / commitdiff