Changeset 363d5ff in opengl-game for pong.cpp

Timestamp:

Aug 8, 2017, 2:38:57 AM (7 years ago)

Author:

Dmitry Portnoy <dmp1488@…>

Branches:

feature/imgui-sdl, master, points-test

Children:

4046b51

Parents:

eeece4e

Message:

Implement moving the paddle up and down the screen

File:

• pong.cpp (modified) (5 diffs)

pong.cpp

@@ -96 +96 @@
 
    GLfloat points_paddle[] = {
-      -1.0f,  1.0f,  0.0f,
-      -1.0f,  0.7f,  0.0f,
-      -0.9f,  0.7f,  0.0f,
-      -1.0f,  1.0f,  0.0f,
-      -0.9f,  0.7f,  0.0f,
-      -0.9f,  1.0f,  0.0f,
+      -1.0f,  0.15f,  0.0f,
+      -1.0f, -0.15f,  0.0f,
+      -0.9f, -0.15f,  0.0f,
+      -1.0f,  0.15f,  0.0f,
+      -0.9f, -0.15f,  0.0f,
+      -0.9f,  0.15f,  0.0f,
    };
 
@@ -142 +142 @@
    float speed = 1.0f;
    float last_position = 0.0f;
+   float last_paddle_pos = 0.0f;
 
    double previous_seconds = glfwGetTime();
@@ -156 +157 @@
 
       model[12] = 0.0f;
+      model[13] = last_paddle_pos;
       glUniformMatrix4fv(location, 1, GL_FALSE, model);
 
@@ -166 +168 @@
       model[12] = last_position + speed*elapsed_seconds;
       last_position = model[12];
+      model[13] = 0.0f;
       glUniformMatrix4fv(location, 1, GL_FALSE, model);
 
@@ -179 +182 @@
       if (GLFW_PRESS == glfwGetKey(window, GLFW_KEY_ESCAPE)) {
          glfwSetWindowShouldClose(window, 1);
+      }
+      if (GLFW_PRESS == glfwGetKey(window, GLFW_KEY_UP)) {
+         last_paddle_pos += 1.0f * elapsed_seconds;
+         if (last_paddle_pos > 0.85f) {
+            last_paddle_pos = 0.85f;
+         }
+      }
+      if (GLFW_PRESS == glfwGetKey(window, GLFW_KEY_DOWN)) {
+         last_paddle_pos -= 1.0f * elapsed_seconds;
+         if (last_paddle_pos < -0.85f) {
+            last_paddle_pos = -0.85f;
+         }
       }
    }