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Diffstat (limited to 'examples/physics_basic_rigidbody.c')
| -rw-r--r-- | examples/physics_basic_rigidbody.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/examples/physics_basic_rigidbody.c b/examples/physics_basic_rigidbody.c new file mode 100644 index 00000000..6c354eb7 --- /dev/null +++ b/examples/physics_basic_rigidbody.c @@ -0,0 +1,124 @@ +/******************************************************************************************* +* +* raylib [physac] physics example - Basic rigidbody +* +* This example has been created using raylib 1.4 (www.raylib.com) +* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) +* +* Copyright (c) 2016 Victor Fisac and Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#include "raylib.h" + +#define OBJECT_SIZE 50 +#define PLAYER_INDEX 0 + +int main() +{ + // Initialization + //-------------------------------------------------------------------------------------- + int screenWidth = 800; + int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [physics] example - basic rigidbody"); + + InitPhysics(3); // Initialize physics system with maximum physic objects + + // Object initialization + Transform player = (Transform){(Vector2){(screenWidth - OBJECT_SIZE) / 2, (screenHeight - OBJECT_SIZE) / 2}, 0.0f, (Vector2){OBJECT_SIZE, OBJECT_SIZE}}; + AddCollider(PLAYER_INDEX, (Collider){true, COLLIDER_RECTANGLE, (Rectangle){player.position.x, player.position.y, player.scale.x, player.scale.y}, 0}); + AddRigidbody(PLAYER_INDEX, (Rigidbody){true, 1.0f, (Vector2){0, 0}, (Vector2){0, 0}, false, false, true, 0.5f, 1.0f}); + + // Floor initialization + // NOTE: floor doesn't need a rigidbody because it's a static physic object, just a collider to collide with other dynamic colliders (with rigidbody) + Transform floor = (Transform){(Vector2){0, screenHeight * 0.8f}, 0.0f, (Vector2){screenWidth, screenHeight * 0.2f}}; + AddCollider(PLAYER_INDEX + 1, (Collider){true, COLLIDER_RECTANGLE, (Rectangle){floor.position.x, floor.position.y, floor.scale.x, floor.scale.y}, 0}); + + // Object properties initialization + float moveSpeed = 6.0f; + float jumpForce = 5.0f; + + bool physicsDebug = false; + + SetTargetFPS(60); + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + + // Update object physics + // NOTE: all physics detections and reactions are calculated in ApplyPhysics() function (You will live happier :D) + ApplyPhysics(PLAYER_INDEX, &player.position); + + // Check jump button input + if (IsKeyDown(KEY_SPACE) && GetRigidbody(PLAYER_INDEX).isGrounded) + { + // Reset object Y velocity to avoid double jumping cases but keep the same X velocity that it already has + SetRigidbodyVelocity(PLAYER_INDEX, (Vector2){GetRigidbody(PLAYER_INDEX).velocity.x, 0}); + + // Add jumping force in Y axis + AddRigidbodyForce(PLAYER_INDEX, (Vector2){0, jumpForce}); + } + + // Check movement buttons input + if (IsKeyDown(KEY_RIGHT) || IsKeyDown(KEY_D)) + { + // Set rigidbody velocity in X based on moveSpeed value and apply the same Y velocity that it already has + SetRigidbodyVelocity(PLAYER_INDEX, (Vector2){moveSpeed, GetRigidbody(PLAYER_INDEX).velocity.y}); + } + else if (IsKeyDown(KEY_LEFT) || IsKeyDown(KEY_A)) + { + // Set rigidbody velocity in X based on moveSpeed negative value and apply the same Y velocity that it already has + SetRigidbodyVelocity(PLAYER_INDEX, (Vector2){-moveSpeed, GetRigidbody(PLAYER_INDEX).velocity.y}); + } + + // Check debug mode toggle button input + if (IsKeyPressed(KEY_P)) physicsDebug = !physicsDebug; + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + // Draw information + DrawText("Use LEFT / RIGHT to MOVE and SPACE to JUMP", (screenWidth - MeasureText("Use LEFT / RIGHT to MOVE and SPACE to JUMP", 20)) / 2, screenHeight * 0.20f, 20, LIGHTGRAY); + DrawText("Use P to switch DEBUG MODE", (screenWidth - MeasureText("Use P to switch DEBUG MODE", 20)) / 2, screenHeight * 0.3f, 20, LIGHTGRAY); + + // Check if debug mode is enabled + if (physicsDebug) + { + // Draw every internal physics stored collider if it is active + for (int i = 0; i < 2; i++) + { + if (GetCollider(i).enabled) + { + DrawRectangleLines(GetCollider(i).bounds.x, GetCollider(i).bounds.y, GetCollider(i).bounds.width, GetCollider(i).bounds.height, GREEN); + } + } + } + else + { + // Draw player and floor + DrawRectangleRec((Rectangle){player.position.x, player.position.y, player.scale.x, player.scale.y}, GRAY); + DrawRectangleRec((Rectangle){floor.position.x, floor.position.y, floor.scale.x, floor.scale.y}, BLACK); + } + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadPhysics(); // Unload physic objects + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
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