#include "stage.h"

#include "texturesdl.h"

#include <SDL/SDL_opengl.h>
#include <cmath>

Stage::Stage() {
	player = new Player();
	
	texture = new TextureSDL("textures/shot1.png");
	shader = new GLShaderProgram();
	
	enemy_list.push_back(new Enemy(Vector2(0.25, 0.75)));
	enemy_list.push_back(new Enemy(Vector2(0.75, 0.75)));
	
	patterns.push_back(new BulletPattern3(Vector2(0.5, 0.5)));
	patterns.push_back(new BulletPattern1(Vector2(0.5, 0.8)));
	//patterns.push_back(new BulletPattern2(Vector2(0.2, 0.5)));
	patterns.push_back(new BulletPattern2(Vector2(0.5, 0.5)));
	//patterns.push_back(new BulletPattern2(Vector2(0.8, 0.5)));
	patterns.push_back(new BulletPattern4(Vector2(0.5, 0.8)));
	
	GLFragmentShader shader1("shaders/bullet_fragment.glsl");
	GLVertexShader shader2("shaders/bullet_vertex.glsl");
	shader->attach(shader1);
	shader->attach(shader2);
	shader->link();
}

void Stage::update() {
	player->update();
	
	for(std::vector<BulletPattern*>::iterator it = patterns.begin(); it < patterns.end(); it++) {
		(*it)->update();
	}
}

void Stage::draw() {
	player->draw();
	
	for(std::vector<Enemy*>::iterator it = enemy_list.begin(); it < enemy_list.end(); it++) {
		Enemy* enemy = (*it);
		enemy->draw();
	}
	
	shader->use();
	glPointSize(32.0);
	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D, texture->tex());
	
	for(std::vector<BulletPattern*>::iterator it = patterns.begin(); it < patterns.end(); it++) {
		BulletPattern *bp = (*it);
		glColor3f(bp->color_r, bp->color_g, bp->color_b);
		bp->draw();
	}
	
	glUseProgram(0);
}