You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
5.3 KiB
128 lines
5.3 KiB
/*******************************************************************************************
|
|
*
|
|
* raylib [physac] example - physics demo
|
|
*
|
|
* This example has been created using raylib 1.5 (www.raylib.com)
|
|
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
|
|
*
|
|
* This example uses physac 1.1 (https://github.com/raysan5/raylib/blob/master/src/physac.h)
|
|
*
|
|
* Copyright (c) 2016-2021 Victor Fisac (@victorfisac) and Ramon Santamaria (@raysan5)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#include "raylib.h"
|
|
|
|
#define PHYSAC_IMPLEMENTATION
|
|
#include "extras/physac.h"
|
|
|
|
int main(void)
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
const int screenWidth = 800;
|
|
const int screenHeight = 450;
|
|
|
|
SetConfigFlags(FLAG_MSAA_4X_HINT);
|
|
InitWindow(screenWidth, screenHeight, "raylib [physac] example - physics demo");
|
|
|
|
// Physac logo drawing position
|
|
int logoX = screenWidth - MeasureText("Physac", 30) - 10;
|
|
int logoY = 15;
|
|
|
|
// Initialize physics and default physics bodies
|
|
InitPhysics();
|
|
|
|
// Create floor rectangle physics body
|
|
PhysicsBody floor = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2.0f, (float)screenHeight }, 500, 100, 10);
|
|
floor->enabled = false; // Disable body state to convert it to static (no dynamics, but collisions)
|
|
|
|
// Create obstacle circle physics body
|
|
PhysicsBody circle = CreatePhysicsBodyCircle((Vector2){ screenWidth/2.0f, screenHeight/2.0f }, 45, 10);
|
|
circle->enabled = false; // Disable body state to convert it to static (no dynamics, but collisions)
|
|
|
|
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
// Main game loop
|
|
while (!WindowShouldClose()) // Detect window close button or ESC key
|
|
{
|
|
// Update
|
|
//----------------------------------------------------------------------------------
|
|
UpdatePhysics(); // Update physics system
|
|
|
|
if (IsKeyPressed(KEY_R)) // Reset physics system
|
|
{
|
|
ResetPhysics();
|
|
|
|
floor = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2.0f, (float)screenHeight }, 500, 100, 10);
|
|
floor->enabled = false;
|
|
|
|
circle = CreatePhysicsBodyCircle((Vector2){ screenWidth/2.0f, screenHeight/2.0f }, 45, 10);
|
|
circle->enabled = false;
|
|
}
|
|
|
|
// Physics body creation inputs
|
|
if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) CreatePhysicsBodyPolygon(GetMousePosition(), (float)GetRandomValue(20, 80), GetRandomValue(3, 8), 10);
|
|
else if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) CreatePhysicsBodyCircle(GetMousePosition(), (float)GetRandomValue(10, 45), 10);
|
|
|
|
// Destroy falling physics bodies
|
|
int bodiesCount = GetPhysicsBodiesCount();
|
|
for (int i = bodiesCount - 1; i >= 0; i--)
|
|
{
|
|
PhysicsBody body = GetPhysicsBody(i);
|
|
if (body != NULL && (body->position.y > screenHeight*2)) DestroyPhysicsBody(body);
|
|
}
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Draw
|
|
//----------------------------------------------------------------------------------
|
|
BeginDrawing();
|
|
|
|
ClearBackground(BLACK);
|
|
|
|
DrawFPS(screenWidth - 90, screenHeight - 30);
|
|
|
|
// Draw created physics bodies
|
|
bodiesCount = GetPhysicsBodiesCount();
|
|
for (int i = 0; i < bodiesCount; i++)
|
|
{
|
|
PhysicsBody body = GetPhysicsBody(i);
|
|
|
|
if (body != NULL)
|
|
{
|
|
int vertexCount = GetPhysicsShapeVerticesCount(i);
|
|
for (int j = 0; j < vertexCount; j++)
|
|
{
|
|
// Get physics bodies shape vertices to draw lines
|
|
// Note: GetPhysicsShapeVertex() already calculates rotation transformations
|
|
Vector2 vertexA = GetPhysicsShapeVertex(body, j);
|
|
|
|
int jj = (((j + 1) < vertexCount) ? (j + 1) : 0); // Get next vertex or first to close the shape
|
|
Vector2 vertexB = GetPhysicsShapeVertex(body, jj);
|
|
|
|
DrawLineV(vertexA, vertexB, GREEN); // Draw a line between two vertex positions
|
|
}
|
|
}
|
|
}
|
|
|
|
DrawText("Left mouse button to create a polygon", 10, 10, 10, WHITE);
|
|
DrawText("Right mouse button to create a circle", 10, 25, 10, WHITE);
|
|
DrawText("Press 'R' to reset example", 10, 40, 10, WHITE);
|
|
|
|
DrawText("Physac", logoX, logoY, 30, WHITE);
|
|
DrawText("Powered by", logoX + 50, logoY - 7, 10, WHITE);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
ClosePhysics(); // Unitialize physics
|
|
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
}
|