(20111215) 12:00

GameLib.c

@@ -1,11 +1,23 @@
 #include <SDL/SDL.h>
 
+#include "Time.h"
+#include "Util.h"
 #include "Draw.h"
 #include "Input.h"
 #include "Audio.h"
+#include "Anim.h"
 #include "Entity.h"
+
 #include "GameLib.h"
 
+// Globals
+int _running;
+Entity **_entity=NULL;
+int _n_entities=0;
+int _n_entities_res=0;
+void (*_gameproc)()=NULL;
+void (*_gamepostproc)()=NULL;
+
 
 /////////////////////////////
 // GameLib_Init
@@ -23,4 +35,159 @@ int GameLib_Init(int w,int h,char *title,int fps){
 }
 
 
+/////////////////////////////
+// GameLib_AddEntity
+//
+// Adds an entity to the game.
+void GameLib_AddEntity(Entity *e){
+	if(_n_entities>=_n_entities_res){
+		Entity **entity_aux;
+		int i;
 
+		// Grow the array
+		if(_n_entities_res==0)
+			_n_entities_res=32;
+		else
+			_n_entities_res*=2;
+		entity_aux=malloc(sizeof(Entity *)*_n_entities_res);
+		for(i=0;i<_n_entities;i++)
+			entity_aux[i]=_entity[i];
+		if(_entity)
+			free(_entity);
+		_entity=entity_aux;
+	}
+
+	// Add the entity
+	_entity[_n_entities]=e;
+	_n_entities++;
+}
+
+
+/////////////////////////////
+// GameLib_UnrefEntity
+//
+// removes the reference to the entity.
+int GameLib_UnrefEntity(Entity *e){
+	int i;
+	for(i=0;i<_n_entities;i++){
+		if(e==_entity[i]){
+			_entity[i]=NULL;
+			return(1);
+		}
+	}
+	return(0);
+}
+
+
+/////////////////////////////
+// GameLib_DelEntity
+//
+// Adds an entity to the game.
+int GameLib_DelEntity(Entity *e){
+	if(!GameLib_UnrefEntity(e)){
+		return(0);
+	}
+	Entity_Destroy(e);
+	return(1);
+}
+
+
+/////////////////////////////
+// GameLib_ProcLoop
+//
+// Process the loop.
+int GameLib_ProcLoop(){
+	int i,j;
+	int repeat,count;
+
+	// Launch the method
+	if(_gameproc){
+		_gameproc();
+	}
+
+	// Process entities
+	for(i=0;i<_n_entities;i++){
+		if(!_entity[i])
+			continue;
+		Entity_Process(_entity[i]);
+	}
+
+	// Process colisions between entities
+	count=0;
+	do{
+		repeat=0;
+		for(i=0;i<_n_entities-1;i++){
+			for(j=i+1;j<_n_entities;j++){
+				if(!_entity[i] || !_entity[j])
+					continue;
+				if(Entity_Collide(_entity[i],_entity[j])){
+					repeat=1;
+				}
+			}
+		}
+		count++;
+	}while(repeat && count<10);
+
+	// Stop remaining collisions
+	for(i=0;i<_n_entities-1;i++){
+		for(j=i+1;j<_n_entities;j++){
+			if(!_entity[i] || !_entity[j])
+				continue;
+			if(Entity_Collide(_entity[i],_entity[j])){
+				vec2_set(_entity[i]->vel,0,0);
+				vec2_set(_entity[j]->vel,0,0);
+			}
+		}
+	}
+
+	// PostProcess and draw entities
+	for(i=0;i<_n_entities;i++){
+		if(!_entity[i])
+			continue;
+		Entity_PostProcess(_entity[i]);
+		Entity_Draw(_entity[i]);
+	}
+
+	// Compactate
+	j=0;
+	for(i=0;i<_n_entities;i++){
+		if(!_entity[i])
+			continue;
+		if(i>j)
+			_entity[j]=_entity[i];
+		j++;
+	}
+	_n_entities=j;
+
+	// Launch the method
+	if(_gamepostproc){
+		_gamepostproc();
+	}
+
+	return(_running);
+}
+
+
+/////////////////////////////
+// GameLib_Loop
+//
+// Loops the game.
+void GameLib_Loop(
+	void (*gameproc)(),
+	void (*gamepostproc)())
+{
+	_running=1;
+
+	_gameproc=gameproc;
+	_gamepostproc=gamepostproc;
+	Draw_Loop(GameLib_ProcLoop);
+}
+
+
+/////////////////////////////
+// GameLib_BreakLoop
+//
+// Breaks the game loop.
+void GameLib_BreakLoop(){
+	_running=0;
+}