86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
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#include <kos.h>
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#include <stdio.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include <GL/glkos.h>
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#include <sys/time.h>
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float angle = 0;
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float deltaTime = 1.0/60.0;
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const float microSecond = 0.000001f;
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float speed = 5.0f;
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void initScreen() {
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
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}
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void displayStuff() {
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glClear(GL_COLOR_BUFFER_BIT);
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glPushMatrix();
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glRotatef(angle, 0, 0, 1);
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glColor3f(1.0f, 1.0f, 1.0f);
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glBegin(GL_POLYGON);
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glVertex3f(0.25f, 0.25f, 0.0f);
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glVertex3f(0.75f, 0.25f, 0.0f);
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glVertex3f(0.75f, 0.75f, 0.0f);
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glVertex3f(0.25f, 0.75f, 0.0f);
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glEnd();
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glPopMatrix();
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// glFlush();
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glKosSwapBuffers();
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}
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void process_input() {
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maple_device_t *controller;
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cont_state_t *controller_state;
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controller = maple_enum_type(0, MAPLE_FUNC_CONTROLLER);
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if (controller) {
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controller_state = (cont_state_t *)maple_dev_status(controller);
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if (!controller_state) {
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printf("An error has occured while trying to read the controller.\n");
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}
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if (controller_state->buttons & CONT_DPAD_RIGHT) {
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speed += 1.0f;
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} else if (controller_state->buttons & CONT_DPAD_LEFT) {
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speed -= 1.0f;
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}
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if (speed < 1.0f) {
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speed = 1.0f;
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}
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angle += (controller_state->joyx / 127.0f) * deltaTime * speed;
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}
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}
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int main() {
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glKosInit();
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initScreen();
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printf("GL_VENDOR: %s\n", glGetString(GL_VENDOR));
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printf("GL_RENDERER: %s\n", glGetString(GL_RENDERER));
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printf("GL_VERSION: %s\n", glGetString(GL_VERSION));
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printf("GL_EXTENSIONS: %s\n", glGetString(GL_EXTENSIONS));
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struct timeval beginningOfFrame, endOfFrame;
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while (1) {
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gettimeofday(&beginningOfFrame, 0);
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process_input();
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displayStuff();
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gettimeofday(&endOfFrame, 0);
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float time = ((float)(endOfFrame.tv_usec) * microSecond) - ((float)(beginningOfFrame.tv_usec) * microSecond);
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if (time > 0.0f) {
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deltaTime = time;
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}
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}
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}
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