medfall

commit 37872d577449889243687b6575fcb4559bc17b10
parent 4d87603346f676c033740386718a713143a97726
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Sun Dec 11 14:28:05 +0200

Fireballs!

Diffstat:
hm.cc
 | 
67
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+), 0 deletions(-)
diff --git a/hm.cc b/hm.cc
@@ -10,6 +10,7 @@
 #include "skybox.h"
 #include "work_queue.h"
 #include "text_renderer.h"
+#include "pool.h"
 
 static const char * vert_src = GLSL(
 	in vec3 position;
@@ -140,6 +141,19 @@ static m4 camera_to_view( v3 position, v3 angles ) {
 	return m4_translation( -position ) * m4_rotz( -angles.y ) * m4_rotx( -angles.x );
 }
 
+struct Fireball {
+	v3 pos;
+	v3 velocity;
+};
+
+struct Explosion {
+	v3 pos;
+	double created_at;
+};
+
+static Pool< Fireball, 1024 > fireballs;
+static Pool< Explosion, 1024 > explosions;
+
 extern "C" GAME_FRAME( game_frame ) {
 	renderer_begin_frame( CLEARCOLOUR_DONT );
 
@@ -201,6 +215,59 @@ extern "C" GAME_FRAME( game_frame ) {
 		immediate_render( &imm, impact_render_state );
 	}
 
+	if( input->keys[ KEY_F ] ) {
+		Fireball * fireball = fireballs.acquire();
+		fireball->pos = game->pos;
+		fireball->velocity = 128.0f * angles_to_vector( game->angles );
+	}
+
+	{
+		ImmediateContext imm;
+		static ImmediateTriangle asdf[ megabytes( 1 ) ];
+		immediate_init( &imm, asdf, ARRAY_COUNT( asdf ) );
+
+		for( Fireball * fireball : fireballs ) {
+			v3 new_pos = fireball->pos + fireball->velocity * dt;
+
+			float t;
+			if( segment_vs_terrain( &game->tm, fireball->pos, new_pos, &t ) ) {
+				Explosion * explosion = explosions.acquire();
+				explosion->pos = fireball->pos + t * ( new_pos - fireball->pos );
+				explosion->created_at = current_time;
+
+				fireballs.release( fireball );
+			}
+			else {
+				const float gravity = 9.81f;
+				fireball->pos = new_pos;
+				fireball->velocity.z -= dt * gravity;
+				immediate_sphere( &imm, fireball->pos, 4, v4( 1, 0, 0, 1 ) );
+			}
+		}
+
+		RenderState fireball_render_state = { };
+		fireball_render_state.shader = game->test_outline_shader;
+		fireball_render_state.ubs[ UB_VS_HOT ] = ub_sphere;
+		immediate_render( &imm, fireball_render_state );
+
+		immediate_init( &imm, asdf, ARRAY_COUNT( asdf ) );
+
+		for( Explosion * explosion : explosions ) {
+			float t = current_time - explosion->created_at;
+			if( t < 0.5f ) {
+				immediate_sphere( &imm, explosion->pos, t * 32.0f, v4( 1, 0.5, 0, 1 ) );
+			}
+			else {
+				explosions.release( explosion );
+			}
+		}
+
+		RenderState explosion_render_state = { };
+		explosion_render_state.shader = game->test_outline_shader;
+		explosion_render_state.ubs[ UB_VS_HOT ] = ub_sphere;
+		immediate_render( &imm, explosion_render_state );
+	}
+
 	{
 		char buf[ 128 ];
 		snprintf( buf, sizeof( buf ), "Frame time: %.1fms FPS: %.1f", dt * 1000.0f, 1.0f / dt );