Added Stage-class.

1 files changed, 116 insertions, 0 deletions

diff --git a/engine/stage.cpp b/engine/stage.cpp
new file mode 100644
index 0000000..59377da
--- /dev/null
+++ b/engine/stage.cpp
@@ -0,0 +1,116 @@
+#include "stage.h"
+
+#include "texturesdl.h"
+
+#include <SDL/SDL_opengl.h>
+#include <cmath>
+
+class BulletPattern1 : public BulletPattern {
+	unsigned int base;
+	public:
+		BulletPattern1(bool reverse, unsigned int base) {
+			num_bullets = 0;
+			color_r = 1;
+			color_g = 0;
+			color_b = 1;
+			bullets = new float[128];
+			this->base = base;
+
+				int j = 0;
+				for(float i = 0; i < M_PI; i += 0.1, j++) {
+					bullets[j*4] = 0.5 + sinf(!reverse ? M_PI_2 + i : M_PI - i + M_PI_2) * 0.09;
+					bullets[j*4 + 1] = 0.8 + cosf(M_PI_2 + i) * 0.1;
+					bullets[j*4 + 2] = sinf(!reverse ? M_PI_2 + i : M_PI - i + M_PI_2) / 15000.0;
+					bullets[j*4 + 3] = -0.0001;
+				}
+		};
+		void update(unsigned int time, unsigned int step) {
+			if(num_bullets < 32 && base + num_bullets * 10 < time) {
+				num_bullets += time / 10 - num_bullets - base / 10;
+				if(num_bullets > 32) num_bullets = 32;
+			}
+			for(int i = 0; i < num_bullets; i++) {
+				bullets[i*4] += bullets[i*4 + 2] * step;
+				bullets[i*4 + 1] += bullets[i*4 + 3] * step;
+			}
+		}
+};
+
+class BulletPattern2 : public BulletPattern {
+	public:
+		BulletPattern2(unsigned int base) {
+			num_bullets = 0;
+			color_r = 0;
+			color_g = 1;
+			color_b = 0;
+			stride = sizeof(float);
+			bullets = new float[8*32*5];
+
+				int k = 0;
+				for(int j = 0; j < 8; j++) {
+					for(float i = 0; i < M_PI; i += 0.1, k++) {
+						bullets[k*5] = 0.5 + sinf(j % 2 ? M_PI_2 + i : M_PI - i + M_PI_2) * 0.09;
+						bullets[k*5 + 1] = 0.8 + cosf(M_PI_2 + i) * 0.1;
+						bullets[k*5 + 2] = sinf(j % 2 ? M_PI_2 + i : M_PI - i + M_PI_2) / 15000;
+						bullets[k*5 + 3] = -0.0001;
+						bullets[k*5 + 4] = base + j * 400 + i * 100;
+					}
+				}
+
+		};
+		void update(unsigned int time, unsigned int step) {
+			while(num_bullets < 256 && (unsigned int)(bullets[num_bullets*5 + 4]) < time) {
+				num_bullets++;
+			}
+			for(int i = 0; i < num_bullets; i++) {
+				bullets[i*5] += bullets[i*5 + 2] * step;
+				bullets[i*5 + 1] += bullets[i*5 + 3] * step;
+			}
+		}
+};
+
+Stage::Stage() {
+	player = new Player();
+	
+	texture = new TextureSDL("textures/shot1.png");
+	shader = new GLShaderProgram();
+	
+	patterns.push_back(new BulletPattern());
+	for(int i = 0; i < 8; i++) {
+		patterns.push_back(new BulletPattern1(i % 2 == 1, 5000 + i * 400));
+	}
+	patterns.push_back(new BulletPattern2(9000));
+	
+	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();
+	
+	static int i;
+	
+	for(std::vector<BulletPattern*>::iterator it = patterns.begin(); it < patterns.end(); it++) {
+		(*it)->update(i++, 1);
+	}
+}
+
+void Stage::draw() {
+	player->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);
+}
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